Datron World Communications G25RMV110 VHF Mobile Radio User Manual G25AMK005a

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Technical Manual

G25AMK005

GUARDIAN 110W MOBILE RADIO

TECHNICAL MANUAL

Datron World Communications Inc. 3030 Enterprise Court

Manual Part No. G25AMK005 Vista, CA 92083, USA

Release Date: May 2002 Phone: (760)597-1500 Fax: (760)597-1510

Revision: A E-mail: sales@dtwc.com

www.dtwc.com

GUARDIAN VHF 110W MOBILE i

GuardianTM Technical Manual for use with the Guardian 110W mobile radio.

This manual, as well as the software described in it, are furnished under license and may only be

used in accordance with the terms of such license. This manual is furnished for informational

use only, is subject to change without notice, and should not be construed as a commitment by

Datron World Communications Inc. Datron assumes no responsibility or liability for any errors

or inaccuracies that may appear in this manual.

Except as permitted by such license, no part of this publication may be reproduced, stored in a

retrieval system, or transmitted, in any form or by any means—electronic, mechanical,

recording, or otherwise—without the prior written permission of Datron World Communications

Inc.

GuardianTM is a trademark of Datron World Communications Inc.

Written and designed at Datron World Communications Inc., 3030 Enterprise Court, Vista,

California 92083 USA.

For defense agencies: Restricted Rights Legend. Use, reproduction, or disclosure is subject to

restrictions set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer

Software clause at 252.227-7013.

For civilian agencies: Restricted Rights Legend. Use, reproduction, or disclosure is subject to

restrictions set forth in subparagraphs (a) through (d) of the commercial Computer Software

Restricted Rights clause at 52.227-19 and the limitations set forth in Datron’s standard

commercial agreement for this software. Unpublished rights reserved under the copyright laws

of the United States.

The warranty is void if an unauthorized dealer opens or attempt maintenance on the radio.

Manual part number: G25AMK005. Specifications are subject to change without notice or

obligation.

This device made under license of one or more of the following US Patents: 5,164,986;

5,146,497; 5,185,795; 4,636,791; 4,590,473; 5,185,796; 5,148,482; 5,271,017; 5377229;

4,833,701; 4,972,460.

The IMBETM voice coding technology embodied in this product is protected by intellectual

property rights including patent rights, copyrights, and trade secrets of Digital Voice Systems,

Inc. The voice coding technology can only be used as part of the North American land mobile

radio communications system for the APCO Project 25. The user of this technology is explicitly

prohibited from attempting to decompile, reverse engineer, or disassemble the Object Code, or in

any other way convert the Object Code into human-readable form.

Made in the USA

ii GUARDIAN VHF 110W MOBILE

NOTICE TO USER

WARNING! Maintain a distance of at least 3 feet (1 meter) between the antenna

and people.

To satisfy RF exposure compliance, you, as a qualified user of this radio device

must control the exposure conditions of bystanders to ensure the minimum

distance is maintained between the antenna and nearby persons. The operation

of this transmitter must satisfy the requirements of the Occupational/Controlled

Exposure Environment for work-related use. Transmit only when people are at

least the minimum distance from the properly installed, externally mounted

antenna.

This radio is designed for initial setup by authorized technicians using a

computer and the GuardianTM programming software. Programming can enable

or disable many of the radio’s features from user access per user agency

security policy and legal restrictions. All, some, or none of the features and

functions described in this manual may be available to the user. To successfully

operate the radio, it is important to understand how the radio is programmed

prior to issuance by the user agency. Consult authorized agency personnel for

features and functions made available or restricted to the user. FCC licensees

are prohibited by federal law from enabling the radio to directly enter transmit

frequencies using the radio's controls.

NOTICE TO INSTALLATION TECHNICIANS

Use only a manufacturer- or dealer-supplied antenna.

Antenna minimum safe distance: 3 feet (1 meter).

The Federal Communications Commission (FCC) has adopted a safety

standard for human exposure to Radio Frequency (RF) energy that is below

the Occupational Safety and Health Act (OSHA) limits.

Antenna mounting: The antenna supplied by the manufacturer or radio

dealer must be mounted at a location so that during radio transmission

people cannot come closer than the minimum safe distance to the antenna,

i.e., 3 feet (1 meter).

To comply with current FCC RF exposure limits, the antenna must be

installed at or exceeding the minimum safe distance, and in accordance

with the requirements of the antenna manufacturer or supplier.

Base station installation: The antenna should be fixed-mounted on an

outdoor permanent structure. Address RF exposure compliance at the time

of installation.

Antenna substitution: Do not substitute any antenna for the one supplied or

recommended by the manufacturer or radio dealer. You may be exposing

people to harmful RF radiation. Contact your radio dealer or manufacturer

for further instructions.

GUARDIAN VHF 110W MOBILE iii

CONTENTS

CHAPTER 1: GENERAL INFORMATION ................................................................................................. 1-1

1.1 SCOPE ......................................................................................................................................................... 1-1

1.2 GENERAL DESCRIPTION .............................................................................................................................. 1-1

1.3 PERFORMANCE SPECIFICATIONS ................................................................................................................. 1-1

CHAPTER 2: HARDWARE THEORY OF OPERATION.......................................................................... 2-1

2.1 INTRODUCTION ........................................................................................................................................... 2-1

2.2 SYSTEM SPECIFICATIONS ............................................................................................................................ 2-1

2.3 SYSTEM BLOCK DIAGRAM .......................................................................................................................... 2-2

2.4 RECM CONTROL HARDWARE THEORY OF OPERATION.............................................................................. 2-4

2.4.1 Control Logic ..................................................................................................................................... 2-4

2.4.2 DSP .................................................................................................................................................... 2-7

2.4.3 Flash ROM ......................................................................................................................................... 2-7

2.4.4 RAM .................................................................................................................................................. 2-7

2.4.5 TCXO................................................................................................................................................. 2-7

2.4.6 FPGA ................................................................................................................................................. 2-8

2.4.7 IF ADC............................................................................................................................................... 2-8

2.4.8 Clock Generation ............................................................................................................................... 2-8

2.4.9 Logic Audio CODEC......................................................................................................................... 2-8

2.4.10 Accessory Connector Interface and Filtering .....................................................................................2-8

2.4.11 Transceiver Interface and Filtering .................................................................................................... 2-8

2.4.12 Keypad Interface ................................................................................................................................ 2-8

2.4.13 Audio Interface................................................................................................................................... 2-8

2.4.14 Test Interface...................................................................................................................................... 2-9

2.4.15 LED.................................................................................................................................................... 2-9

2.4.16 RECM Power Consumption............................................................................................................... 2-9

2.5 RECM TRANSCEIVER SECTION .................................................................................................................. 2-9

2.5.1 Interface Section................................................................................................................................. 2-9

2.5.2 Receiver Section............................................................................................................................... 2-10

2.5.3 Digital/Analog Control..................................................................................................................... 2-13

2.5.4 Keypad Microcontroller ................................................................................................................... 2-14

2.6 AUDIO AMPLIFIER BOARD ........................................................................................................................ 2-14

2.6.1 Description ....................................................................................................................................... 2-14

2.6.2 Power Conditioning ......................................................................................................................... 2-14

2.6.3 Communication with Transceiver .................................................................................................... 2-15

2.6.4 Audio Amplifiers ............................................................................................................................. 2-15

2.6.5 Power Levels Detector, Converter, and RF/DC Combiner .............................................................. 2-15

2.6.6 PA ON/OFF Control (Bypass Mode)............................................................................................... 2-16

2.6.7 RF Power Indication ........................................................................................................................ 2-16

2.6.8 Audio Board Block Diagram............................................................................................................ 2-16

2.7 DISPLAY BOARD ....................................................................................................................................... 2-17

Figure 2-4: Guardian Keypad Board............................................................................................................... 2-17

2.7.1 Control Logic Interface .................................................................................................................... 2-18

2.7.2 Keypad ............................................................................................................................................. 2-18

2.7.3 Switch Interface ............................................................................................................................... 2-18

2.8 FRONT PANEL INTERFACE BOARD ............................................................................................................ 2-18

CHAPTER 3: SOFTWARE THEORY OF OPERATION ........................................................................... 3-1

3.1 FUNCTIONAL SYSTEM OPERATION.............................................................................................................. 3-1

3.1.1 General ............................................................................................................................................... 3-1

3.1.2 Guardian Block Diagram ................................................................................................................... 3-1

3.1.3 Architecture........................................................................................................................................ 3-2

3.1.4 Board Identification ........................................................................................................................... 3-2

iv GUARDIAN VHF 110W MOBILE

3.1.5 Self-Test on Power-Up....................................................................................................................... 3-2

3.1.6 Flash Software Upgrades ................................................................................................................... 3-2

3.1.7 Voice Coder/Decoder (VOCODER).................................................................................................. 3-2

3.2 RADIO CONTROL SOFTWARE ...................................................................................................................... 3-2

3.2.1 Audio Control .................................................................................................................................... 3-2

3.2.2 DSP Control Software........................................................................................................................ 3-2

3.2.3 Transceiver Board .............................................................................................................................. 3-3

3.2.4 DC Power Control.............................................................................................................................. 3-5

3.2.5 Monitoring ......................................................................................................................................... 3-5

3.2.6 Radio Control Drivers ........................................................................................................................ 3-5

3.3 DIGITAL SIGNAL PROCESSING..................................................................................................................... 3-6

3.3.1 DSP Transmit Chain .......................................................................................................................... 3-6

3.3.2 DSP Receive Chain ............................................................................................................................ 3-8

3.3.3 DSP Software................................................................................................................................... 3-11

3.4 KEYPAD MPU SOFTWARE ........................................................................................................................ 3-11

3.4.1 Overview.......................................................................................................................................... 3-11

3.4.2 General ............................................................................................................................................. 3-11

3.4.3 Keypad Scanning ............................................................................................................................. 3-11

3.4.4 Push-to-Talk (PTT) Input................................................................................................................. 3-11

3.4.5 Switch Input ..................................................................................................................................... 3-11

3.4.6 LED Output...................................................................................................................................... 3-11

3.4.7 Backlight Control ............................................................................................................................. 3-11

3.4.8 Serial Interface ................................................................................................................................. 3-11

3.5 DATA INTERFACE...................................................................................................................................... 3-12

3.5.1 CAI Data Interface ........................................................................................................................... 3-12

3.5.2 Synchronous Serial Data Interface................................................................................................... 3-12

3.5.3 CAI Data Link Layer ....................................................................................................................... 3-12

3.5.4 Transmit Physical Link Layer .......................................................................................................... 3-13

3.5.5 Receive Physical Link Layer............................................................................................................ 3-14

3.5.6 DES Encryption ............................................................................................................................... 3-14

3.5.7 Host Interface................................................................................................................................... 3-15

3.5.8 Flash Interface.................................................................................................................................. 3-15

3.5.9 Paging............................................................................................................................................... 3-15

3.5.10 Hardware Control............................................................................................................................. 3-16

3.6 CONTROLLER SOFTWARE.......................................................................................................................... 3-16

3.6.1 Overview.......................................................................................................................................... 3-16

3.6.2 Environment..................................................................................................................................... 3-16

3.6.3 Radio Store....................................................................................................................................... 3-18

3.6.4 Program/Fill/Control Interface......................................................................................................... 3-19

3.7 USER INTERFACE ...................................................................................................................................... 3-20

3.7.1 Display ............................................................................................................................................. 3-20

3.7.2 Optional DTMF Microphone ........................................................................................................... 3-20

CHAPTER 4: INSTALLATION, ADJUSTMENT, AND OPERATION .................................................... 4-1

4.1 RADIO CONFIGURATION ............................................................................................................................. 4-1

4.1.1 Channels............................................................................................................................................. 4-1

4.1.2 Zones.................................................................................................................................................. 4-1

4.1.3 Banks.................................................................................................................................................. 4-1

4.2 INSTALLATION AND ADJUSTMENT .............................................................................................................. 4-1

4.2.1 Hardware............................................................................................................................................ 4-1

4.2.2 Software ............................................................................................................................................. 4-1

4.3 OPERATING PROCEDURES ........................................................................................................................... 4-1

4.3.1 Connect the Power Source ................................................................................................................. 4-1

4.3.2 Connect the Antenna .......................................................................................................................... 4-1

4.3.3 Optional External Speaker ................................................................................................................. 4-1

4.3.4 Radio Programming ........................................................................................................................... 4-1

GUARDIAN VHF 110W MOBILE v

4.3.5 Radio Power Up ................................................................................................................................. 4-2

4.3.6 Choose a Channel............................................................................................................................... 4-2

4.3.7 Transmit a Voice Message ................................................................................................................. 4-2

4.3.8 Receive a Voice Message................................................................................................................... 4-2

4.3.9 Programming and Bypass Mode ........................................................................................................ 4-2

CHAPTER 5: RADIO SET AND ACCESSORIES ....................................................................................... 5-1

5.1 SYSTEM DESCRIPTION ................................................................................................................................5-1

5.1.1 Mobile Radio...................................................................................................................................... 5-1

5.1.2 Antenna .............................................................................................................................................. 5-1

5.1.3 Guardian PC Programmer .................................................................................................................. 5-1

5.1.4 Cloning Cable..................................................................................................................................... 5-2

5.2 CONTROLS, INDICATORS, AND CONNECTORS ............................................................................................. 5-2

5.2.1 Controls.............................................................................................................................................. 5-2

5.2.2 Indicators............................................................................................................................................ 5-3

5.2.3 Connectors ......................................................................................................................................... 5-4

5.3 TRANSCEIVER CHARACTERISTICS ............................................................................................................... 5-4

5.3.1 Transmitter Characteristics ................................................................................................................ 5-4

5.3.2 Receiver Characteristics..................................................................................................................... 5-5

5.4 COMMUNICATION SECURITY ...................................................................................................................... 5-5

5.4.1 Algorithms ......................................................................................................................................... 5-5

5.4.2 Keyfill ................................................................................................................................................ 5-5

5.4.3 Zeroize ............................................................................................................................................... 5-6

CHAPTER 6: SERVICING THE RADIO...................................................................................................... 6-1

6.1 GENERAL .................................................................................................................................................... 6-1

6.2 SELF-TEST AT POWER UP........................................................................................................................... 6-1

6.3 CAUTION..................................................................................................................................................... 6-1

CHAPTER 7: TROUBLESHOOTING........................................................................................................... 7-1

7.1 INTRODUCTION ........................................................................................................................................... 7-1

7.2 RADIO FUNCTIONAL TESTS......................................................................................................................... 7-1

7.2.1 Power-On Test ................................................................................................................................... 7-1

7.2.2 Buttons and Switches Test ................................................................................................................. 7-1

7.2.3 Transmit Test ..................................................................................................................................... 7-1

7.2.4 Receive Test....................................................................................................................................... 7-1

7.2.5 Audio Test.......................................................................................................................................... 7-1

CHAPTER 8: DEFINITIONS ......................................................................................................................... 8-1

CHAPTER 9: SIGNAL TONES...................................................................................................................... 9-1

CHAPTER 10: INTERFACE ...............................................................ERROR! BOOKMARK NOT DEFINED.

10.1 ACCESSORY CONNECTOR PINS AND FUNCTIONS....................................................................................... 10-1

CHAPTER 11: SCHEMATICS ....................................................................................................................... 11-1

FIGURES

Figure 2-1: Guardian Interconnect Diagram ............................................................................................................. 2-3

Figure 2-2: Guardian Control Logic ......................................................................................................................... 2-4

Figure 2-3: RECM Power Supply ............................................................................................................................. 2-5

Figure 2-4: Guardian Keypad Board.......................................................................................................................2-17

Figure 3-1: Guardian Block Diagram........................................................................................................................3-1

Figure 3-2: Transmit DSP Chain...............................................................................................................................3-7

Figure 3-3: Receive DSP Chain ................................................................................................................................3-8

Figure 3-4: Controller Software..............................................................................................................................3-16

GUARDIAN VHF 110W MOBILE 1-1

CHAPTER 1: GENERAL INFORMATION

1.1 Scope

This manual provides technical information for the Guardian 110 Watt mobile radio system.. This chapter gives a

general description and provides a system block diagram. Chapters 2 and 3 provided detailed theory of operation for

hardware and software portions of the radio. Chapter 4 provides general operation of the radio. Chapter 5 is the

physical description of the radio components and the available accessories. Chapters 6 and 7 describe servicing,

testing, and troubleshooting the radio system. The remaining chapters provide additional technical information and

schematics.

1.2 General Description

The Guardian 110W mobile radio system is compliant with the APCO project 25 FDMA common air interface, and

is also compatible with conventional wideband FM systems and newer narrowband FM systems. It provides fully

digital encrypted communication suitable for use by modern public safety and commercial users. The radio system is

built from a remote power amplifier and a control head. The 110W RF power amplifier mounts in a remote location

such as a vehicle trunk, while the control unit is mounted in the cabin. The two are connected by a single coaxial

cable. The cable carries both the RF signal and control signals (PTT, and power level setting).

1.3 Performance Specifications

Model Designation Guardian VHF Mobile Radio

General Model G25RMV110

Frequency Range 136.000 to 174.000 MHz

Banks, Zones, Channels, Shadow 4 banks, 16 zones, 256 channels, 7 shadow

Voice Digital Mode Voice Coding

Frame Re-sync Interval

Error Correction Method

IMBE™ 4.4 kb

180 msec

RS, golay, hamming

Input Voltage 13.6 Vdc, negative chassis ground

Current Drain @ 13.8V: Standby

Receive @ Rated Audio

Transmit @ Rated Power

0.5A

3.0A

28.0A

Mounting Dashboard mounted, including bracket

Dimensions 2.75” x 7.1” x 5.5” (H x W x D)

Weight

Control Head

Remote Unit

2.5 lb

12 lb

Case Metal and plastic

Temperature Range -30° to +60°C

Channel Spacing 12.5 and 25 kHz, selectable in 2.5 or

3.125 kHz steps

FCC Type Acceptance Number Pending

Industry Canada Pending

1-2 GUARDIAN VHF 110W MOBILE

Model Designation Guardian VHF Mobile Radio

Receiver (Measurements per TIA/EIA 603 Standards)

Sensitivity Digital Mode: 5% BER

Analog Mode: 12 dB SINAD

-116 dBm or greater

Spurious -70 dB

Intermodulation -70 dB

Audio Output Power 10W, 4Ω external, 5W, 8Ω internal speaker

Audio Distortion (at 1000 Hz) 3%

Frequency Stability (-30° to 60°C) ± 1 ppm

Maximum Frequency Separation Full-band split

Transmitter (Measurements per TIA/EIA 603 Standards)

RF Power Output 25W to 110W, adjustable

Spurious and Harmonic Emissions -70 dB

FM Hum and Noise (wideband) -46 dB @ 25 kHz/-40 dB @ 12.5 kHz

FCC Modulation Designators 16K0F3E, 11K0F3E, 20K0F1E

Audio Distortion (at 1000 Hz) 2%

Audio Response (1000 Hz Ref.) ± 3 dB, 300 to 3000 (EIA/TIA 603)

Frequency Stability (-30°C to 60°C) ± 2.5 ppm

Maximum Frequency Separation Full bandwidth

Environment Specifications (MIL-SPEC)

Environment 810C 810D 810E

Method Procedure Method Procedure Method Procedure

Low Pressure 500.1 I 500.2 I 500.3 II

High Temp. 501.1 I, II 501.2 I, II 501.3 I, II

Low Temp. 502.1 I 502.2 I 502.3 I

Temp. Shock 503.1 I 503.2 I 503.3 I

Solar Radiation 505.1 I 505.2 I 505.3 I

Humidity 507.1 II 507.2 II (5) 507.3 II (5)

Salt Fog 509.1 I 509.2 I 509.3 I

Dust and Sand 510.1 I 510.2 I 510.3 I, II

Vibration 514.2 VII(W) 514.3 I (1) 514.4 I (1)

Shock 516.2 I, II, V 516.3 I 516.4 I

GUARDIAN VHF 110W MOBILE 2-1

CHAPTER 2: HARDWARE THEORY OF OPERATION

2.1 Introduction

The Control Module contains the Receiver Exciter Control Module (RECM), Audio amplifier

board, Interface board, and display and keypad assemblies. The RECM is a shielded assembly

containing the transceiver and all control and signal processing hardware and firmware, except

the RF and audio power amplifiers. The trunk-mounted RF power amplifier contains a single PC

assembly.

Schematics for all the boards are located in the back of the manual.

2.2 System Specifications

Table 2-1: Guardian G25RMV110 Technical Specifications

Specification Description

General

Frequency Range 136.000 to 174.0000 MHz

Banks, Zones, Channels, Shadow 4 banks, 16 zones, 256 channels, 7 shadow

Voice Digital

Mode Voice Coding IMBE 4.4 kb

Frame Re-sync Interval 180 msec

Error Correction Method RS, golay, hamming

Mounting Under dashboard using bracket

Dimensions 2.94”x7.13”x7.06” (H x W x D)

Weight 5 lbs. Approximately

Case Metal and plastic

Temperature Range -30° to +60°C

Channel Spacing 12.5 and 25 kHz, selectable in 2.5 or 3.125 kHz steps

FCC Type Acceptance Number Pending

Industry Canada Pending

Receiver (Measurements per TIA/EIA 603 Standards)

Sensitivity

Digital Mode: 5% BER

Analog Mode: 12 dB SINAD

-116 dBm maximum

Spurious -70 dB

Intermodulation -70 dB

Audio Output Power 5W internal, 10W external speaker

Audio Distortion (at 1000 Hz) 5%

Frequency Stability (-30° to +60°C) ±2.5 ppm

Maximum Frequency Separation Full-band split

Transmitter (Measurements per TIA/EIA 603 Standards)

Duty Cycle 3%, 3 min continuous

RF Power Output 25W, 50W, 110W; also bypass mode

Spurious and Harmonic Emissions -70 dB

FM Hum and Noise (wide/narrowband) -48/-47 dB typical

FCC Modulation Designators 11K0F3E, 16K0F3E, 22K0F3E, 14K6F1E

Audio Distortion (at 1000 Hz) 5%

Audio Response (1000 Hz Ref.) ±3 dB 300 to 3000 (EIA/TIA 603)

Frequency Stability (-30° to +60°C) ±2.5 ppm

2-2 GUARDIAN VHF 110W MOBILE

Specification Description

Maximum Frequency Separation Full bandwidth

DES Encryption

Encryption Keys 16

Code Key Generator External

SBCF Analog DES Encryption Standard feature

Environmental Specifications MIL-STD-810F

Test Method/Procedure

Low Pressure (Altitude) 500.4/II

High Temperature 501.4/I, II

Low Temperature 502.4/I

Temperature Shock 503.4/I

Solar Radiation (Sunshine) 505.4/I

Humidity 507.4/I

Salt Fog 509.4/I

Sand and Dust 510.4/I, II

Vibration 514.5/I

Shock 516.5/I

Standard Accessories Optional Accessories

5W Internal Speaker 10W External Speaker

Palm Microphone DTMF Microphone

Mounting Bracket Key Variable Loader

14 ft Power Cable 25 ft Power Cable

2.3 System Block Diagram

GUARDIAN VHF 110W MOBILE 2-3

Control Head

Mounted Power Amplifier

Coax

Control

Cable

Antenna ConnectionIn/Out

Fused DC Cable

Power ON/OFF and R/T

switches

Control

Power

spliter

output power

control monitor

Filter&

combiner

AMP

power sensor

Fused DC Power

DB9

Speaker out

Ignition and Emergency Switch

DB25

System Control and

Programming

RECM

control

Front panel interface

(LCD,Keypad and switches)

MIC

connector

DTMF

control

connector

Figure 2-1: Interconnect Block Diagram

2-4 GUARDIAN VHF 110W MOBILE

2.4 RECM Control Hardware Theory of Operation

2.4.1 Control Logic

The control logic interfaces to the keypad logic, transceiver, internal audio, and Motherboard. The control logic

implements the main radio control function and all the baseband signal processing.

TCVR Module

DB25 Accessory Connector

Power Supply

Keypad Board and Front Panel Interface

Grey areas connect

through the 80-pin

connector on the

Motherboard.

Figure 2-2: Guardian Control Logic

2.4.1.1 Power Supply Unit

This block of circuitry takes the 7.8V regulated voltage together with a number of control signals to generate a

number of power supply outputs.

GUARDIAN VHF 110W MOBILE 2-5

2.4.1.2 On/Off Switching

The main continuous supply 10V control is passed through a front panel on/off switch to generate 10V SW from the

main radio supply. In normal operation the on/off switching is controlled by the radio on/off rotary switch by the

control /RADON. Once switched on the main controller can hold the radio on by setting PWRHOLD. In addition

to the radio rotary on/off switch, the on/off switching can be controlled by the external line /RADOFF via the

accessory connector. This line overrides the /RADON line and can be used to force the radio off regardless of the

rotary switch setting. However, the H8 controller uses the PWRHOLD and PWROFF lines to implement a clean

controlled switch off.

Figure 2-3: RECM Power Supply

2.4.1.3 Transmit Power Switching

A single FET switch controlled by CTX is used to provide a switched 10VTX high-current supply (1.5A) for the

transmitter.

2.4.1.4 4.5V Switch Mode Power Supply

This circuit uses a switch mode power supply device to generate a 4.5V supply at 450 mA maximum for the radio

logic. The switch mode device is synchronous and uses an externally provided power supply clock at 384 kHz. The

power supply circuit includes input and output filters to limit the conduction of the fundamental switching

components and their harmonics in the VHF band, both onwards into the logic and back into the power supply.

2-6 GUARDIAN VHF 110W MOBILE

2.4.1.5 3.3V Linear Logic Supply

The output from the 4.5V switch mode power supply is passed through 3.3V linear power supplies to remove any

remaining power supply switching noise on the main logic supply. One 3.3V supply is used for control logic, the

other 3.3V, 50 mA supply is used for control logic analog circuitry.

2.4.1.6 Reset Generator

This circuit uses a MPU supervisory device (MAX825) to generate a reset pulse of at least 140 ms whenever the

3.3V logic supply drops below 3.08V. The circuit also generates a reset signal when the watchdog input is asserted

by H8 or DSP.

2.4.1.7 5V Linear Logic Supply

This circuit generates a 5V logic supply at 50 mA maximum for use on the control logic.

2.4.1.8 Audio Supplies

Two linear regulators providing clean filtered supplies for the audio at 5V are provided. The audio power amplifiers

use the 5V, 800 mA audio supply. The audio supply is used for the low-current microphone amplifier. A linear 5V

bias supply to the internal microphone is also provided.

2.4.1.9 H8 Microcontroller

H8 is the main controller for the radio and is a HD6433044 ROM-less microcontroller. H8 is configured with an

expanded bus connected to the Flash, RAM, and DSP. The H8 integral bus arbitration logic allows H8 and DSP to

both have access to the Flash and RAM. H8 is clocked by the external TCXO.

H8 is powered from the 3.3V logic supply, and reset by the hardware /RES line. A watchdog output to the hardware-

reset circuitry is provided. H8 generates chip select outputs to allow the Flash, RAM, FPGA, and DSP host port to

be separately addressed.

One serial port of H8 is used to implement a bidirectional synchronous serial interface to the keypad board. This

interface is used to communicate with the keypad MPU and directly load the LCD controller. The clock on this

interface runs at 100 kHz. An associated interrupt input to H8 is used to initiate transfers from the keypad to H8.

This serial interface is also used to load the output expander in the FPGA, and also to configure the FPGA.

One serial port of H8 is used to implement a bidirectional asynchronous serial interface to an external PC used for

programming, filling, and controlling the radio. This interface uses programmable standard baud rates (default 9600

baud) and standard data formats. There are no handshaking parallel lines associated with this interface. Two parallel

I/O lines on H8 are used to generate an I2C interface to allow the EEPROM on the transceiver to be accessed. Four

parallel output lines on H8 are used to generate a synchronous serial output bus with clock and data and separate

strobe lines for the DAC, control shift register, and synthesizer on the transceiver.

One H8 DAC output is used to generate simple audio tones of varying volume for use as audio alerts. The second

H8 DAC output is available for VCTCXOP control. The six-channel ADC is used to measure: the raw supply

voltage, WRU radio input, reference crystal temperature, PA temperature, PA current, and RSSI. Two I/O lines are

used to implement software UART, used for debug outputs in the development environment.

2.4.1.10 H8 Input Requirements

The total requirements for parallel input signals to H8, which need to be polled on a regular basis are:

 OOL: Out-of-lock (OOL) signal from the transceiver synthesizer

 EXT PTT: External PTT

 PWROFF: On/off switch position

 CONFDONE: Configuration status of FPGA

2.4.1.11 H8 Output Requirements

The total requirements for parallel output signals from H8, which need to be controlled are as below. A serial load

output latch in the FPGA expands the output capabilities of H8.

GUARDIAN VHF 110W MOBILE 2-7

 LCDA0: LCD controller A0 command/ data select

 LCDCS: LCD chip select

 SCL: I2C and synthesizer clock

 DACSDA: Transceiver serial data, synthesizer, DAC, S-R

 SYNTHENA: Synthesizer framing pulse

 DACENA: DAC framing pulse

 SRENA: S-R framing pulse

 /DINT: Interrupt to DSP from H8

 /RESO: Watchdog output from H8

2.4.1.12 H8 Input/Output Requirements

The total requirements for parallel input/output signals on H8, which need to be read and controlled are:

 BATBUS: Not used in the mobile configurations

 SDA: I2C data

2.4.1.13 H8 Input Interrupt Requirements

The total requirements for parallel input interrupt signals on H8 are:

 LBOUT: Not used in the mobile configuration

 DSPINT DSP: Interrupt

2.4.2 DSP

The DSP56309 (or DSP56302) processor implements all baseband signal-processing functions in the radio. It

interfaces with the transceiver through one ESSI port, to the user for voice through the second ESSI port. The DSP

function is controlled by H8 through the DSP host port. The DSP has direct access to the main Flash memory

through the bus arbitration logic in H8, this allows it to download program images. The initial power-on code

download is through the host port. The hardware-reset line resets the DSP. The TCXO clock output line clocks the

DSP at 12.288 MHz. The DSP ESSI 1 port is used to provide a synchronous interface to the IF ADC and the

transceiver 12-bit DAC. In receive modes that interface is capable of writing to the DAC at 48 ksps while still

reading the ADC at 96 ksps. The DSP ESSI “0” port is used to provide a full-duplex synchronous interface to the

audio CODEC using 8 kHz sampling rate and 13 bit samples. The data transfer is at 2.048 MHz using a DSP

sourced clock and framing pulse.

2.4.3 Flash ROM

A 512k x16 Flash ROM is used as the main program store for the H8 controller and DSP. The Flash ROM uses a

protected boot sector that is factory programmed via the DSP JTAG port. Normal reprogramming is implemented

by running H8 from the boot sector and using 3V, programming the bulk of the device. The Flash is used to provide

a parameter storage area for nonvolatile data storage of frequencies and keys, etc. This storage area is capable of in

excess of 100k write cycles.

2.4.4 RAM

A 128k x 8 static RAM is used for temporary storage of data by the H8 controller. This RAM is powered by a

continuous supply that maintains its contents as long as a power source is present. Additionally the RAM has a

backup capacitor to retain its contents over power interruptions.

2.4.5 TCXO

This oscillator serves as the reference for all logic and power supply clocks within the control logic and keypad. It

provides the data rate clocks for radio operation, and is the source of the ADC/DAC/CODEC conversion clocks. The

TCXO is at 12.288 MHz, with a temperature tolerance of +2.5 ppm. Additional calibration is performed to provide

a typical temperature tolerance of ± 1.0 ppm, a trimmer to set the initial frequency is provided. A Schmitt trigger

buffer squares up the TCXO sine wave output before being output to H8 and DSP.

2-8 GUARDIAN VHF 110W MOBILE

2.4.6 FPGA

The control logic uses an Altera 8282 FPGA device to provide a flexible serial data routing function, I/O expansion

for H8 and DSP, clock generation, data multiplexing, and to absorb discrete logic functions.

The synchronous serial bus routing function involves routing the synchronous serial port of H8 either to the keypad

and LCD, or to the I/O expansion in the FPGA. High-order address pins from H8 control this routing and a FPGA

dummy write with dedicated FPGA chip select from H8. The FPGA includes a serial load parallel output shift

The discrete logic functions of the FPGA, includes logic to control an inverter for one of the LCD control outputs.

The data multiplexing function involves rerouting serial pins between the accessory connector and the DSP SCI port

to allow data transmission and keyfill operations.

2.4.6.1 FPGA Configuration

The FPGA is configured at start-up from the main Flash memory using a serial load from H8. During configuration

outputs are tri-stated and pulled to a safe level by committing resistors to prevent audio and RF bursts at power up.

2.4.7 IF ADC

The IF sampling ADC is a 12-bit ADC capable of sub-sampling a 455 kHz, IF signal at 96 kHz sampling rate. It is

connected by a serial interface to the DSP ESSI port 1. The serial data interface is clocked at 1536 kHz.

2.4.8 Clock Generation

The clock generation logic is used to generate clocks for the synchronous power supplies, the ADC serial interface,

and the keypad microcontroller. The clock generator logic is implemented in the FPGA.

2.4.9 Logic Audio CODEC

The audio CODEC is an integrated ADC/DAC and audio filter device capable of full-duplex operation on voice

bandwidth signals at 8 ksps. The samples have a resolution of 13-bits linear. The CODEC is connected to the DSP

ESSI port “0” with serial data transfer rate of 2.048 MHz. The CODEC is continuously powered from the 3V logic

and 3V audio supplies. DSP parallel control lines are used to mute the input and output sections as required.

2.4.10 Accessory Connector Interface and Filtering

All outputs are filtered to limit their bandwidth to the minimum and current limited to protect them from output

short circuits to ground or up to 16V. All inputs are filtered and protected from continuous application of ground or

+16V. There is no protection against negative applied voltages. Inputs and outputs are protected from static

discharge of at least 10 kV air discharge. All inputs and outputs incorporate RF bypass filter capacitors adjacent to

the connector, except for ground.

2.4.11 Transceiver Interface and Filtering

Most of the signals crossing the interface are filtered to limit their bandwidth to the minimum consistent with correct

operation. Outputs from the control are filtered with series resistors on the RECM and grounded capacitors on the

transceiver adjacent to the connector. Outputs from the transceiver to the control use the reverse configuration.

2.4.12 Keypad Interface

Some filtering is provided on this interface, but all outputs are protected from short circuits by series resistors.

Where possible, inputs are also protected from damage by series resistors.

2.4.13 Audio Interface

The audio interface is implemented with four-way wire connectors directly via the 80-pin interface through the

Motherboard to the integral speaker and microphone.

GUARDIAN VHF 110W MOBILE 2-9

2.4.14 Test Interface

The test interface provides the following functions:

 Joint test action group (JTAG) connector access for board test and Flash boot sector programming

 Board reset and control access

 Board power supply and on-off switching access

 H8 serial debug port access

2.4.15 LED

The control logic incorporates a 3-color LED used for status information. It is controlled by the FPGA to show red,

green, or off. It is optically coupled to the top face of the radio by a light pipe. The hardware is configured so

during hardware reset, before the keypad MPU software is running, the LEDs are off.

2.4.16 RECM Power Consumption

The control logic operates at input voltage 7.7V. The average current consumption of the control logic is:

 Standby mode: 60 mA

 Receive mode @ 500 mW: 330 mA

 Transmit mode @ 2W: 1,000 mA

 Transmit mode @ 5W: 1,500 mA

2.5 RECM Transceiver

RF shields covers the board.

2.5.1 Interface

J2 is the transceiver antenna connector. RF signals are transmitted and received through this surface mount RF

connector. Transmitted and received RF signals are routed from this connector through a short RF cable to the

RX/TX relay on the Motherboard.

2.5.1.1 Transmit Chain

The pre-driver amplifier (Q7, etc.) amplifies the TXLO signal from the synthesizer section. The Q7 output power is

typically 13 dBm measured at C77/R44/R49 node.

R44, R49, and R52 are part of a 3 dB pie attenuator network. The gain control is made up of CR5, CR6, and

associated components. This circuit yields more than 50 dB of useful attenuation range. The circuit is part of a

DAC controlled closed loop system, in conjunction with the detector/power control circuit (U12, U13, and

associated components), which controls the transmitter output power level. The power amplifier (PA) is a

Mitsubishi M68776, 7.2V, 6W gained controlled power amplifier.

The harmonic filter (C209, L30, C81, C82, L31, C83, and C84) attenuates harmonics created by the power

amplifier. The harmonic filter insertion loss is 0.4 dB typically at 174 MHz. The output of the harmonic filter

connects to the 20 dB coupler (U12). This coupler is part of a DAC-controlled closed loop system designed to set

the transmitter output power level. The insertion loss through the coupler (U12-1 to U12-3) is 0.2 dB typically.

2.5.1.2 Power Amplifier Control

Transmit output power level is controlled by the detector/power control circuit and the gain control amplifier input

via VCONTROL. This closed loop system is designed to keep the transmitter output power constant over variations

in temperature, transmitter supply voltage (7.5VT), and RF power levels into the transmit chain. The detector/power

control circuit is made up of the 20 dB coupler (U12), an RF rectifier circuit (CR11, CR12, etc.), and an integrator

(U13). The DAC line labeled PWRSET at the non-inverting input of U13 sets the transmitter to the desired power

level. U12-2 samples the transmit signal. The sampled RF signal is rectified by the temperature stable circuitry of

CR11, CR12, etc, and is routed to the inverting input of the integrator at U13-4. The output of the integrator at U13-

1, labeled VCONTROL, controls the gain of the power amplifier. Any change in transmitter output power level is

automatically corrected by the loop.

2-10 GUARDIAN VHF 110W MOBILE

2.5.1.3 PIN Diode Switch

The antenna PIN diode switch is made up of CR7, CR8, CR9, CR10, and other associated components. This switch

is a four-port design. The four ports are antenna 1 (TOP RF), antenna 2 (SIDE RF), receive, and transmit. Receive

and transmit ports can be switched to only one of the two antenna ports. Transmit signals are routed from the

transmit/receive PIN diode switch (to be discussed in the following paragraph) to the antenna port. The receive

signal is routed from the selected antenna port to the transmit/receive PIN diode switch. The antenna PIN diode

switch and receiver circuits share current in the receive mode of operation via the signal labeled RXSINK at Q11,

pin 3. The insertion loss through the antenna pin switch is 0.2 dB typically.

The transmit/receive PIN diode switch is made up of C6, L60, L38, L40, L39, D9, D7, D10, C97, C98, C104, C105,

C106, C107, and other associated components. C127, C114, L42, and C115 are the 1/4 wave simulator circuit. The

1/4 wave simulator is critical to the design of the switch. In the transmit mode of operation CR13 and CR14 are

forward biased. C116 resonates with the internal series inductance of CR14 at 155 MHz and the receive port (RX

INPUT) is RF shorted to ground. With the receive port RF shorted to ground; the parallel combination of C127,

C114, and L42 forms a tank circuit resonating at 155 MHz. Consequently, the receive port appears as an open

circuit to the transmit signal and is routed to the antenna PIN diode switch. In the receive mode of operation, CR13

and CR14 are biased off so C114/L42/C115 appears as a low-pass filter (LPF) to signals at the antenna port of the

switch. The insertion loss through the transmit/receive PIN diode switch is 0.4 dB in the transmit mode and 0.2 dB

in the receive mode typically.

Q10 to Q19 and associated components are switching transistors used to control the antenna and transmit/ receive

PIN diode switches. The current flowing through the entire PIN diode circuit is approximately 45 mA in the

transmit mode of operation. In the receive mode of operation the transmit/receive PIN diode switch is disabled, and

nominal 85 mA flows through the antenna PIN diode switch.

2.5.2 Receiver

The VHF signal enters into the RX INPUT via the PIN diode switch (discussed previously). D1 and D2 are

Schottky protection diodes to protect the front-end circuitry from RF overloads that could occur if the PIN diode

switch failed to work properly or if a transmitter is very close to a receiver. Typical insertion loss is 0.1 dB for the

protection diodes. L25/C61 form a band-stop filter (BSF) at the first IF frequency of 45 MHz. Typical insertion

loss for the BSF is 15 dB at 45 MHz but less than 0.1 dB in the VHF band.

L14, L6, CR3, CR4, L7, CR27, CR28, L8, and L15 make up the very high frequency (VHF) preselector band-pass

filter (BPF). The BPF is inductively coupled for improved high-side attenuation. This filter provides attenuation to

spurious signals such as the first image and the half-IF. The BPF is varactor diode tuned by DAC line RXVTF.

Typical insertion loss (138 to 174 MHz) is 1 dB for the VHF BPF.

The RF amplifier (Q1, T1, etc.) utilizes loss-less feedback to deliver reasonable gain, low-noise figure, and a high

third order intercept point simultaneously. Typical gain (136 to 174 MHz) is 11.5 dB for the RF amplifier.

C14, L1, C9, C15, L2, C10, C16, L3, C11, C17, and L9 form a VHF LPF. This filter provides additional RX

spurious attenuation as well as image noise attenuation. L4, C12, L16, C25, L5, and C13 form a BSF at the first IF

frequency of 45 MHz. The insertion loss is 1.0 to 2.0 dB (136 to 174 MHz) typically for the cascade. The IF BSF

insertion loss is typically 40 dB at 45 MHz, but less than 0.3 dB in the VHF band.

U1 is a double-balanced mixer (DBM). U1 converts the desired RF signal down to the first IF of 45 MHz. High-

side local oscillator (LO) injection is used. Therefore, the LO is 45 MHz higher than the receiver tuned frequency.

The LO drive level is +10 dBm nominal at U1, pin 1. The conversion loss of the mixer (RF to IF) is 5.5 dB

typically.

The LO signal is generated in the synthesizer section (to be discussed later). The LO signal is designated RXLO on

the schematic diagram. The LO signal is routed to a LPF consisting of C31, L21, C87, C30, L20, C75, and C28.

L19 and C28 are also used to impedance match the LO port of the mixer. The insertion loss of the VHF LO LPF is

0.3 dB typically at 174 MHz.

R4, L17, C6, L10, R5, and C23 make up the diplexer network. This network properly terminates the DBM both in

and out of band. The diplexer also provides some additional half-IF spurious rejection. The diplexer insertion loss

is 0.8 dB typically at 45 MHz.

GUARDIAN VHF 110W MOBILE 2-11

There are two 45 MHz IF amplifier circuits. The first (Q2, T2, etc.) utilizes loss-less feedback to deliver reasonable

gain, low-noise figure, and a high third order intercept point simultaneously. Typical gain is 10.5 dB for the first IF

amplifier.

There are two crystal BPFs and a second 45 MHz IF amplifier. The BPFs provide attenuation for the adjacent and

alternate channels, and also for the second image response. FL1 is a four-pole crystal filter with a 20 kHz

bandwidth centered at 45 MHz. FL4 is a two-pole crystal filter with a 30 kHz bandwidth centered at 45 MHz. The

second 45 MHz IF amplifier provides high gain to prevent further degradation of receive sensitivity. C57, L12,

C18, C19, and L13 are impedance matching elements for the input of FL1. The output of FL1 is impedance

matched to the second 45-MHz IF amplifier (Q36, etc.) by C285, L64, and C242.

The output of the second 45-MHz IF amplifier is impedance matched to FL4 by C287, L61, C286, C237, L60, and

C235. The entire cascade provides 21 dB of gain and has a 3 dB bandwidth of 20 kHz typically. Typical insertion

loss is 1.5 dB for each crystal BPF.

The IF IC (U28) contains the second mixer and an IF amplifier chain. The 45 MHz IF signal enters U28 at pin 6

from the crystal BPF (FL4). FL4 is impedance matched to the IF IC input by C294, L62, and C288. The incoming

45 MHz IF signal is mixed with the second LO (to be discussed later). The second mixer IF output is at U28, pin 8

and the second IF frequency is 455 kHz.

The signal from U28-8 is routed to FL3. FL3 is a ceramic BPF operating at 455 kHz. The insertion loss of the

ceramic BPF is 6 dB typically in a 1500-ohm system.

The 455 kHz IF signal enters U28-10, is amplified by a cascade of IF amplifiers, and exits at U28-14. The signal

from U28-14 then enters a second ceramic BPF, FL2. FL2 is the final ceramic BPF with a typical insertion loss of 8

dB in a 1000-ohm system. The 455 kHz IF signal enters its final stage of amplification at U29-3. U29 is configured

as a non-inverting operational amplifier and is capable of driving a 50-ohm load. The amplifier is set for a voltage

gain of 2.5. With the receiver set to full gain the signal level at J4 (455 kHz IF OUT MONITOR) is -20 dBm "3 dB

into 50 ohm with a -119 dBm unmodulated 136 MHz signal injected at J2 (TOP RF) or J3 (SIDE RF). The second

LO consists of CR26, R33, Y1, L24, C59, C226, C227, and Q35. The oscillator is a Colpitts type with the crystal

operating in the series mode. CR24 is a varactor diode used to set the oscillator on frequency using the DAC output

labeled 2nd LO. The second LO operating frequency is 44.545 MHz (low-side injection). L65 and C223 impedance

match the output of Q35 to the LPF (C289, C293, L63, and C284). The signal is attenuated by R282, R283, and

R284 and sent on to the second mixer. The signal level at U28-4 is -16 dBm nominal.

U4 is a voltage regulator used to power the receiver circuits. The dc voltage appearing at U4, pin 1, labeled

RXSINK on the schematic diagram, is routed from the antenna PIN diode switch. As previously discussed, the PIN

diode switch and the receiver circuits share current to reduce receive power consumption. The control line +3.3V

RXEN is used to enable the regulator while the transceiver is in the receive mode of operation. The regulator is

disabled during the transmit mode of operation.

2.5.2.1 Synthesizer and Reference Oscillator

U19 is a fractional-N synthesizer IC programmed for a specific frequency by loading appropriate serial data into the

IC. It controls the receive VCO when the transceiver is in the receive mode of operation, and the transmit VCO

when in the transmit mode. The programming lines are labeled 3VSCL, 3VSDA and 3VSYNTHENA on the

schematic diagram. These are all CMOS logic level inputs. R118 (RF) and R123 (RN) are the fractional

compensation and phase detector current setting resistors, respectively. These resistors are critical to the operation

of the synthesizer system and must be checked when troubleshooting around U19. The phase detector output pins

(U19-13 and U19-14) are fed to the passive loop filter (R140, C177, C172, R134, and C173) and on to the VCO

control varactor diodes (CR17/CR19) for frequency control. The buffered, filtered output from the VCO is fed into

U19-5 (RF IN) to close the phase-locked-loop. The level is typically -10 dBm into U19-5. The reference oscillator

is made up of CR22, Y2, Q28, C197, and C198 and associated components. The reference oscillator operates at

12.8 MHz. The reference oscillator operating frequency is adjusted by varying the dc voltage at the DAC controlled

line that is labeled REFOSCMOD. This line is also used to modulate the reference oscillator during the

transceiver’s transmit mode of operation. The 12.8 MHz signal is fed into the synthesizer chip at U19-8 (REF IN)

using a coupling capacitor, C194. The AC signal level at U19-8 is 1V p-p typically.

2-12 GUARDIAN VHF 110W MOBILE

U22 is the reference oscillator temperature sensor used to monitor the temperature near Y2. Its output is labeled

XTALTEMP on the schematic diagram. This line is normally monitored by the microprocessor so the reference

oscillator can be adjusted for drift due to changes in temperature.

2.5.2.2 Receive/Transmit VCOs and Buffer Amplifiers

The receive VCO operates from 181 to 219 MHz since high side LO injection is used and the first IF is

45 MHz. The transmit VCO operates from 136 to 174 MHz. Each VCO is a Colpitts type design utilizing a low

noise, bipolar transistor as the active device. The receive VCO uses Q24 and the transmit VCO uses Q21, each in

the common collector configuration. The Colpitts capacitors are C169/C180 (receive VCO), and C137/C142

(transmit VCO). These capacitors enable Q24 to oscillate in the 181 to 219 MHz frequency range and Q21 to

oscillate in the 136 to 174 MHz frequency range. L53 is the resonating inductor for the receive VCO and L45/L46

are the resonating inductors for the transmit VCO. CR20/CR21, and CR16/CR18 are the coarse tuning varactor

diodes for the receive and transmit VCO respectively. These diodes are used to coarse tune the VCO such that the

LPF, phase detector output voltage (from U19) at TP10 equals 1.65 Vdc. The receive and transmit VCOs share the

coarse tuning DAC controlled line labeled CTUNE. Coarse tune dc voltage swings from nominal 1.8 to 22 Vdc.

CR19 (receive VCO) and CR17 (transmit VCO) are the fine-tuning varactor diodes controlled by U19 as was

explained previously. CR15 is the modulation varactor diode for the transmit VCO. The output from the receive

VCO is coupled off Q24-E using C174. The output from the transmit VCO is coupled off Q21-E using C139. The

signal is measured at the C174/R146 node (receive) and the C139/R107 node (transmit), and measures -15 dBm

typically.

Q26 and Q22, and associated components, form the first VCO receive and transmit buffer amplifiers respectively.

These amplifiers buffer the VCO output from changing-output voltage standing wave ratios (VSWR) that could pull

the VCO off frequency. The output from each measures -5 dBm typically. The buffer is measured at the

C170/R141 node (receive) and the C138/R131 node (transmit). Q25 is the second buffer amplifier. This amplifier is

common to both the receive and the transmit VCOs. R131, R141, and R142 are the combining elements used to

make this possible. This buffer outputs a signal large enough, after subsequent attenuation and filtering, to properly

drive the RF IN pin of the synthesizer (U19-5). The output from this buffer is measured at the C167/C53/L52/C175

node and measures 0 dBm typically.

The output from the Q25 buffer is filtered by C175, C53, L52, and C176. This LPF prevents the synthesizer IC

(U19) from locking on to harmonics of the desired frequency. The insertion loss of the LPF is 0.4 dB typically.

The signal is then split by R138, R139, and R144, and sent on to the appropriate receive or transmit final buffer

amplifier. The signal measured at R139/C150/ C186 node is -6 dBm, and the signal measured at R144/R143/C168

node is -6 dBm.

Q23 (receive) and Q27 (transmit) is the final buffer amplifier. Q23 amplifies the signal up to the level needed to

properly drive the LO port of the DBM (discussed previously). Q27 amplifies the signal up to the level needed to

properly drive the PA pre-driver (previously discussed). The signal measured at RXLO is +7 dBm typically. The

signal measured at TXLO is +7 dBm typically.

U17, Q20, etc. form the voltage regulator for the receive and transmit VCO/buffer amplifiers. R67, C124, and Q20

form a super filter, which attenuates voltage regulator noise that may otherwise degrade the synthesizer phase noise

performance.

U20, U21, Q29, Q30, CR23, CR24, CR35, C199, C202, C203, etc. create a voltage multiplier. The circuit is

configured as a voltage quadrupler. Circuit losses and output loading lowers the voltage down from 24 Vdc to about

22 Vdc. The driver circuit (U21) switches at about 192 kHz. This frequency was selected so harmonics would not

land at or near the second IF frequency of 455 kHz. The 22 Vdc supply is used to power the DAC supporting quad

op-amp U18.

The shift register (U24) is used to control transceiver modes of operation and functions. The line labeled STD/SIDE

selects the desired antenna port of the transceiver. The line labeled TX/RX selects either the transmit or receive

mode of operation. +3.3V RXEN turns the receiver on and off (previously discussed). Q34/Q32 and Q33/Q31

enable and disable the receive and transmit VCOs and buffers respectively (discussed previously). U16 is the

voltage regulator that supplies all 5V digital circuitry on the transceiver.

GUARDIAN VHF 110W MOBILE 2-13

2.5.3 Digital/Analog Control

Digital/analog control is shown on page 1 of the RECM schematic. The transceiver is fitted with an EEPROM

(U15). The IC is used to store calibration and curve fit data, which is needed when the transceiver is configured

with the Guardian radio. Each transceiver has its calibration and curve fit data stored within the EEPROM. The

calibration and curve fit data is written to the EEPROM at the successful conclusion of level 2 testing. Two quad 8-

bit serial DACs, a quad 12-bit serial DAC, and supporting operational-amplifiers (U2, U6, U13, U18, and U30)

control much of the transceiver, as has been discussed previously. U32 is a 2.5 Vdc reference used by the Quad 12-

bit DAC and the variable IF attenuator (discussed previously).

U18D and associated components amplifies the dc signal supplied by U31-3.

As was discussed previously, REFOSCMOD is the dc signal, which varies the operating frequency of the reference

oscillator. Normally under DSP and microprocessor control, this line is used to FM modulate the reference

oscillator, which in turn FM modulates the RF carrier in transmit mode. This line is used to temperature compensate

the reference oscillator as well.

The DAC controlled line TXVCOMOD at U31-4 is transmit data normally controlled by DSP and a microprocessor.

This signal is routed to U18C and associated components. U18C and associated components form an active

LPF/attenuator to shape the transmit data before modulating the RF carrier in the transmit mode. The cutoff

frequency of the LPF occurs at 20 kHz. The 1 kHz peak-to-peak signal level at the active LPF output (U18-8) is

one-fourth TXVCOMOD at 2.5 Vdc.

The synthesizer reference oscillator and the transmit VCO are simultaneously modulated to balance the FM

modulation. We refer to this technique as two-point modulation. The DAC values required to balance the

modulation are dependent on RF frequency.

The dc signal at U31-17 is routed to U30 and associated components. This op-amp is configured for a voltage gain

of 2. The dc signal VATT controls the variable IF attenuator (discussed previously) in the receiver chain. Under

DSP and microprocessor control, the attenuator is normally set for a desired amount of attenuation by this DAC

controlled signal.

Q37, Q38, Q39, Q40, Q41, and associated components are used to enable and disable the 14 dB step attenuator in

the receiver chain (discussed previously). Normally under DSP and microprocessor control, the attenuator is set to

the desired state of operation via U31-13. A logic level “1” at this pin enables the attenuator. Conversely, a logic

level “0” at this pin disables the attenuator (bypass mode).

U18B and associated components amplifies the dc signal supplied by U33-2. As discussed previously, CTUNE is

the dc signal which coarse tunes the receive and transmit VCOs. Under microprocessor control, the appropriate

VCO is normally coarse tuned to a desired frequency based on curve fit data stored in the EEPROM (U15). Curve

fit data is obtained and stored in the EEPROM during coarse tune calibration procedures performed at level 2

testing.

The DAC controlled DC signal 2nd LO sets the 2nd LO (discussed previously) on frequency at 44.545 MHz.

Normally under microprocessor control, the 2nd LO is set on frequency based on a DAC value stored in the

EEPROM (U15). The correct DAC value is obtained and stored in the EEPROM during the 2nd LO calibration

procedure at level “2” testing.

The DAC controlled dc signal RXVTF appropriately sets the varactor tuned BPF (discussed previously) based on

the receiver tuned frequency. Normally under microprocessor control, the varactor tuned BPF is set based on curve

fit data stored in the EEPROM (U15). The curve fit is based on statistical data obtained during the testing of

hundreds of units.

The DAC controlled dc signal PWRSET sets the power amplifier (discussed previously) to a desired power level.

Normally under microprocessor control, the power amplifier is set to the desired level based on curve fit data stored

in the EEPROM (U15). The curve fit data is obtained and stored in the EEPROM during transmit power calibration

procedures at level 2 testing. The power calibration procedure obtains curve fit data for five power level settings

(0.1W, 0.5W, 1.0W, 2.0W, and 5.W) over the entire transmitter operating frequency range (136 to 174 MHz).

The DAC controlled dc signals PA1 and PA2 set the gate bias for each power transistor (Q6 and Q9 respectively) in

the power amplifier circuit (discussed previously). These two signals are routed to op-amps U2 and U6, which are

2-14 GUARDIAN VHF 110W MOBILE

configured for a voltage gain of 2. The outputs at U2-1 and U6-1, labeled PABIAS1 and PABIAS2 respectively, are

then routed to the gates of the power transistors. The correct DAC values for the bias current are stored in the

EEPROM (U15). The correct DAC value is obtained and stored in the EEPROM during the power amplifier bias

calibration procedure at level 2 testing. Each gate is biased such that 100 mA of current flows through each power

transistor with PWRSET set to a DAC value of zero in the transmit mode. Level 2 software monitors the U10

output line labeled IMONITOR when calibrating PA bias.

2.5.4 Keypad Microcontroller

The keypad board is controlled by an Atmel AVR4414 microcontroller. This is a Flash programmable device. The

microcontroller implements these functions:

 Keypad scanning

 PTT switch input

 Auxiliary keys input

 Volume switch input

 Channel switch input

 Emergency switch input

 Synchronous bidirectional serial interface to main controller at 100 kHz

 Keypad and LCD backlight control

A clock derived from the main reference clock, clocks the keypad microcontroller at 1.5 MHz. The keypad

microcontroller is powered by the 3.3V supply as the LCD driver device.

2.6 Audio Amplifier Board

2.6.1 Description

The Audio amplifier board contains the internal and external audio and control circuitry. It also houses the DB25

accessory connector, the DB9 power connector, and the RF control connector that protrudes through the rear panel.

The board is located in the Control Module. The board contains the following functions:

 RFI and transient protection and system on/off switch

 Voltage regulator and 7.8V on/off switch

 Communication with transceiver

 Audio power amplifiers

 Power levels detector and converter and the RF and DC combiner

 PA on off control

 RFI and transient protection

2.6.2 Power Conditioning

Power for the Guardian 110W control head enters this board on J5 the DB9 connector. Dual low RDS(on) P-channel

FET Q10 serves as reverse polarity protection and on-off switching. Transistor Q7 pulls down the gates of Q10

when the ON/OFF signal is high, allowing Q10 to conduct. With ON/OFF control low, Q10 is cut off, and will not

pass forward or reverse polarity. An over-voltage condition is detected by D2 and Q6, which cause Q7 to cut off and

turn off power.

Back-to-back transorbers D1 and D4 are used to eliminate voltage spikes before the on/off switch. The input power

is routed to the clamp circuit via an LC filter. The filter eliminates unwanted signals from being conducted to the

vehicle power line.

GUARDIAN VHF 110W MOBILE 2-15

2.6.2.1 Voltage Regulator and 7.8V On/Off Switch

Linear regulator U5 provides +7.8V to the RF power control circuitry and to the other two PC assemblies in the

control head. The regulator is powered via Q10 body diode at all time. When the unit is turned off all the circuits

are disconnected from power except the transceiver in the control head. The transceiver in this case is in the off

state. The power consumption in this case is less than 2 mA powering the boat backup memory circuits.

2.6.3 Communication with Transceiver

Twenty pin IDC headers J2 and J3 carry control and status signals from the transceiver and front panel via the

Control PCA.

2.6.4 Audio Amplifiers

The board contains two identical audio amplifiers. Each audio amplifier has 20 dB gain and is capable of delivering

more than 10W to a 4-ohm load in a bridge-tied-load configuration. They are fed from the transceiver audio output.

A front panel switch selects either or both amplifiers; an unselected amplifier is placed in a mute condition by the

appropriate disable signal. When there is no received signal, both amplifiers are placed in a low-current standby

mode by squelch comparator.

2.6.5 Power Levels Detector, Converter, and RF/DC Combiner

ON /OFF, PTT and RF output power control signals to the 110W power amplifier are generated on this board.

These are present as DC signals on the center conductor of the coaxial cable connecting the control head to the

remote RF PA. A low-pass filter prevents RF from reaching the control circuitry. The voltage levels are as follows:

DC Control Voltage Range PA State

0 to 0.4V DC on/off switch – OFF

>0.7V DC on/off switch – ON

0.7 to 1.2V PA is in bypass – RECEIVE mode

2.1V Power output set 25W

3.6V Power output set 50W

6.5V Power output set to 110W

The transceiver power levels are detected via the connection to TP21. The voltages are as follows:

TP 21 Control Voltage Boat Power Output

2.85 5W

1.87 2W

1.28 1W

The control circuits converts an input above 2.2V (5W setting) to a control signal to 6.5V, which results in 110W

generated in the remote RF power module. Accordingly it converts the 2W and 1W control levels to the indicated

PA control. Input control of less than 1V is converted to 2.6V. The PA puts out 25W also for the 0.5W input power

setting but will fail to do so at the 0.1W setting. In this case power output is not specified, and the red LED will not

light.

2-16 GUARDIAN VHF 110W MOBILE

2.6.6 PA ON/OFF Control (Bypass Mode)

It is possible to operate the system not utilizing the PA (PA in by pass mode.) This is done by turning on control

head on with the PTT depressed. An orange TX light indicates to the user that he is operating in by pass mode. In

this mode, output power is about 1dB lower that the nominal levels delivered from the transceiver, as indicated in

the table above. In normal mode, Q16 conducts at start-up, causing Q14 to conduct, which keeps Q15 off. When

using this mode, Q16 conducts in the reverse direction, Q14 remains off and Q15 conducts, which prevents bias

voltage from being sent to the RF power amplifier.

2.6.7 RF Power Indication

Operational amplifier U3A forces the output control voltage at Q8-E to be equal to that at U3-3. After high power

transmit is detected at the PA output. The RF PA test circuit forces additional current back into this line. The op-

amp loop holds the voltage at the input level, so the additional current is forced out Q8-C and through R44. This

forces Q9 to conduct and sink additional current from the LED_TX. The LED_TX turns off the green light. When

the unit is in bypass (low power) mode the Tx lamplights orange because the red and the green LED’s are on.

2.6.8 Audio Board Block Diagram

Audio Block diagram

RFI filter&

transient

protection

on off switch

voltage

ragulator

7.8volts 7.8volts

switched internal

audio amplifier

external

audio amplifier

audio in

power level

voltage

converter

RF&DC

combiner

RF IN

RF &control out/in

J2 - IDC 20 pin J3 - IDC 20 pin

PA on off

control

Switch PTT

7.8volts

switched

input voltage

audio out p

audio out n

audio out p

audio out n

power level input

Figure 2-4: Audio Board Block Diagram

GUARDIAN VHF 110W MOBILE 2-17

2.7 Display Board

The Display board consists of a seven-switch keypad and an LCD module with integrated LED blue backlight. The

board is heatstaked onto the plastic front panel, forming a permanent assembly. Electrical connections are made to

the Interface board via a 20-pin connector (J13).

The radio display module is a full graphics 80x32 pixels LCD, requiring a temperature compensated differential

driving voltage of about 12V and a 1/6 bias, 1/32 duty cycle driving scheme. The LCD driver device (Seiko Epson

SED 1530) drives the display. This LCD driver has an internal display RAM that copes with all the display

refreshing autonomously. Display data transfers from the main controller are only required when the display is

changed, selective display RAM updates are also available to minimize serial traffic. The LCD driver display RAM

is accessed through a one way synchronous serial interface and connected in parallel with the AVR serial port. The

LCD CS input is used to differentiate between serial data for the LCD driver and the keypad board hardware reset

line resets the display drive. The hardware is configured such that during hardware reset, before serial LCD data is

presented, the LCD is blank. The radio keypad consists of 16 keys, which contact onto switch contacts on the rear of

the keypad board.

Keypad

Figure 2-5: Keypad Board

2-18 GUARDIAN VHF 110W MOBILE

2.7.1 Control Logic Interface

The signals on this interface need not be filtered, but are protected from short circuits to ground. All logic signals

are at 0 to 3V Complimentary Metal-Oxide Semiconductor (CMOS) levels at the interface. The interface carries the

following functions:

• 10V Control

• Ground

• /RADON

• Switched 10V Supply

• Reset

• AVR Clock

• Serial Data Clock

• Serial Data Input

• Serial Data Output

• Key Interrupt

• LCD Chip Select

• LCD A0 (data\command select)

• Keypad Chip Select

2.7.2 Keypad

2.7.3 Switch Interface

Interface to switches is provided to the RECM via 80-pin connector to the Interface board.

2.8 Interface Board

This board is located in the Control Head Assembly in the vehicle cab. The transceiver (RECM) is mounted to this

board and interfaces through 80-pin connector J1. The front panel display PCA mounts to this assembly and

interfaces through 20-pin connector J4. The microphone interface is J5, an 8-pin modular connector.

Communication with the audio amplifier board and the remote RF Power Amplifier is through two 20-pin

connectors J2 and J3. The DC power for this board, the transceiver and front panel functions enters via J3. The 3.3V

powering the display and logic is generated by a linear regulator U1 powered from the 7.8V via an on/off switch

q12. All front panel switches and LED lamps are mounted to this board. Connection to the internal 5W speaker is

via J6.

ON/OFF control: Transistors Q11-14 are connected to the outputs of the binary volume switch SW3. The

transceiver uses these signals to detect the off position of the volume switch. At the off position all lines are open. If

any of the lines is switched and ignition power is high Q17 is on providing low (0V) to one of the transistor witch

will result in a positive ON/OFF voltage. This signal witch is routed also to the audio board to control power

function there and in the remote RF Power Amplifier.

SW4: Used to change channels. The transceiver uses the binary outputs to detect the position of the channel switch.

Toggle Switches: Program switch SW1 for a variety of functions. Switch SW2 is used to select between internal

and external audio speakers.

Front panel buttons: Keypad depressions on the front panel are detected by the scanning outputs from the

transceiver. Keypad depressions on the optional DTMF microphone are detected by the DTMF decoder on this

board and are processed as ordinary scan-in signals by the transceiver.

DTMF keypad processing: The optional DTMF can be used to program the radio. Keypad depressions generate a

DTMF tone in the audio output. This signal is routed to DTMF detector U6, and digital outputs are sent to1-of-16

de-multiplexer U2. The outputs from U2 are used to control analog switches U3-5. In this way the transceiver scan-

out lines can be connected to the appropriate scan-in lines to simulate a physical switch closure.

GUARDIAN VHF 110W MOBILE 2-19

PTT processing: In normal operation, a PTT switch closure causes Q2 to conduct, which in turn causes Q7 to

conduct. This signal is distributed to the rest of the radio as the PTT signal. When a DTMF button is depressed, the

transceiver automatically transmits this tone.

PTT lockout: To prevent transmission of DTMF tone during programming, a latch circuit is provided to lockout

PTT. When the ENTER button is pressed the PTT signals is disabled by a latches circuit. When the ESCAPE button

is pressed the lockout latch is reset. It is recommended to utilize the PTT condition lockout during programming the

PTT (light will stay off). This is done by pressing ENTER key and after that hold the PTT key depressed until

programming is done. To re-key the radio release PTT and key the radio once the radio is out of the programming

mode use the ESC key quit programming.

J1, 80-pin boat connection

J2, IDC, 20-pin audio

connection

J3, IDC, 20-pin audio

connection

J4, 20-pin display

connection

J5, RJ11, 8-pin MIC

and KLV connection

DTMF to keypad

interface

Programming PTT

disable

Volume selector

and on/off control

On/off controlled

3.3V regulator

LED

drivers/control

Channel, speaker

out, ABC switch

selectors

J6, 2-pin

speaker

connection

Figure 2-5: Interface Board

GUARDIAN VHF 110W MOBILE 3-1

CHAPTER 3: SOFTWARE THEORY OF OPERATION

3.1 Functional System Operation

3.1.1 General

All control and channel software is resident in the RECM.

3.1.2 Guardian Block Diagram

Figure 3-1: Software Theory of Operation Block Diagram

Switches

LCD

Keypad

Keypad MPU

H8 Controller

DSP

Audio

DB25 Accessory Connector

Transceiver

PSU

Power Supply

External Power

Receiver/Exciter/Control

Module (RECM)

Battery

Data

Power

Modulation

Control

IF Output

Control/Fill/Code

Keyfill

User Data

3-2 GUARDIAN VHF 110W MOBILE

3.1.3 Architecture

A single digital signal processor (DSP) handles all signal-processing functions. An H8 microcontroller is used to

control the user interface and implement other radio control functions. All references to signal names relate to the

Receiver/Exciter/Control Module (RECM). Functionality partitioning is shown in Figure 1-1.

3.1.4 Board Identification

The control logic stores an electronic serial number and modification status within nonvolatile storage on the board.

3.1.5 Self-Test on Power-Up

The software automatically executes a self-test when the radio is switched on. This test is capable of detecting and

identifying faults that prevent the radio from properly operating.

3.1.6 Flash Software Upgrades

The radio software is updated if required using a PC and the Guardian G25AXG004 PC Programming/Cloning

cable.

3.1.7 Voice Coder/Decoder (VOCODER)

The VOCODER uses an improved multi-band excitation (IMBE) voice-coding algorithm as specified in the

telecommunications industry association and electronic industries alliance (TIA/EIA)-102.BABA. The IMBE

VOCODER compresses a high-bit-rate waveform into a low-bit-rate data stream suitable for transmission over the

channel. The VOCODER operates at a net bit rate of 4.4 kbps for voice information and a gross bit rate of 7.2 kbps

after error control coding.

3.2 Radio Control Software

This software controls the transceiver and baseband signal processing functions.

3.2.1 Audio Control

H8 controls the analog audio signal processing. Audio for transmission comes via an external microphone attached

to the front panel. It is wired into the microphone amplifier, which is permanently powered.

Audio output is required when a voice message is received or a tone is generated by the user interface. To allow

audio output, H8 sets either SPKRON or EXTSPKRON to the internal speaker or the accessory connector. If an

external audio accessory is detected by who are you (WRU) <0.5 Vdc, the audio is routed to the accessory

connector. Otherwise audio is routed to the internal speaker. The 16-position volume control knob is decoded and

sent to the DSP through the controller software to control the output audio volume.

3.2.2 DSP Control Software

The DSP implements most of the baseband signal processing in the radio. Its function is controlled through its host

port by the H8 controller. The DSP operates in a number of basic modes controlled by H8 through the host port.

They are as follows:

Mode Description

Idle Current shutdown mode released through the host port

Searching Actively looking for a signal on the IF input signal

Searching paused Search algorithm paused for an economize cycle or frequency change

Active receive Actively receiving a message, initiated by detecting a signal or H8 command

Transmit Actively transmitting voice or data

Keyfill Keyfill operations and key

Management Management tasks

GUARDIAN VHF 110W MOBILE 3-3

The DSP pages-in different program images from the Flash for different modes of operation. Typically one image is

used for receive and standby modes, but a new image is needed for transmit and key management operations. The

DSP can interrupt the H8 controller, and then pass data over the host port back to H8. Interrupts from the DSP

include the following events:

• Signal detected with type data

• Signal lost

• DSP BIT errors

• Paging request

In all active modes the H8 software must be able to write a number of parameters to the DSP and also read back a

number of parameters from the DSP. This is implemented through the host port. The parameters used include:

Mode Description

Search Reference oscillator temperature used by DSP to correct frequency offsets. AGC

reset control is used at start of search period

Analog setting BW, squelch tones, squelch code, and squelch level

Digital setting Data rate, key, and algorithm

Project 25 setting NAC and TGID

CVSD setting Continuously variable slope delta (CVSD). Data rate

Receive Reference oscillator temperature used by DSP to correct frequency offsets. Audio

volume

Analog setting Squelch controls, de-emphasis, and companding

Digital setting Data rate and key algorithm

Project 25 setting NAC, TGID, BER, and test mode

CVSD setting Data rate and key

Project 25 setting Read by H8: SS bits, low-rate data (for future use), and sender ID

Transmit Reference oscillator temperature used by DSP to correct frequency offsets. Audio

volume, sidetone on/off

Analog setting Squelch controls and de-emphasis

CVSD setting Data rate and key

Project 25 setting NAC, TGID, key and low-rate data (for future use)

3.2.3 Transceiver Board

The Transceiver board is controlled through a synchronous serial bus from H8 to the transceiver allowing H8 to

control the synthesizer, two 4-channel 8-bit digital to analog converters (DAC), and a control shift register in the

transceiver board. Some of the DAC channels are set according to data in the transceiver’s electronically erasable

read-only memory (EEPROM) calibration tables.

3.2.3.1 Mode Control

The transceiver shift register and the CTX output of the field-programmable gate array (FPGA) control the modes of

operation (transmit, receive, or standby). The outputs are controlled as below:

Mode Description

Spare (SR bit 1) Spare

3.3VRXSynth (SR bit 2) Set in active receive mode, RXVCO enable

3.3VTXSynth (SR bit 3) Set in active transmit mode, TXVCO enable

3.3VRXEnable (SR bit 4) Set in active receive mode, receiver enable

Spare (SR bit 5) Spare

Spare (SR bit 6) Spare

3-4 GUARDIAN VHF 110W MOBILE

Mode Description

TX/RX (SR bit 7) Set in active transmit mode, front end TX/RX control

STD/SIDE (SR bit 8) Set to use radio antenna, reset to use accessory connector RF port

CTX (FPGA output) Set in active transmit mode to enable the RF power amplifier

3.2.3.2 Frequency Control

The frequency of operation in both transmit and receive is controlled by the H8 setting in the synthesizer through the

serial bus. To set the desired frequency, the appropriate TX or RX synthesizer enable S-R bit must be set, the serial

data loaded into the synthesizer chip, and the DAC2 output A synthesizer coarse tune set to the appropriate value for

the frequency according to the EEPROM calibration table. Synthesizer lock is monitored by the out-of-lock (OOL)

input. Once the synthesizer lock is achieved, the transmitter or receiver is enabled with the appropriate control bits

3.3VRX enable, CTX, and TX/RX. Economizing the synthesizer function is implemented by controlling the

3.3VTXS/RXS bits and by controlling the EM main divider enable bit in the synthesizer control word. If the

frequency is unchanged, the synthesizer serial data need not be reloaded when coming out of economize.

3.2.3.3 12-Bit DAC

DACLDA, DACADCCLK, and DACDOUT control the 12-bit DAC for IFAGC, TXVCOMOD, REFOSCMOD,

and VATT.

3.2.3.4 Reference Oscillator Temperature Compensation

The H8 software constantly monitors the reference oscillator crystal temperature using the XTALMON line. The

temperature data is used to lookup the compensation factor in the transceiver’s EEPROM calibration table. This

compensation factor is written into the DSP, added as a dc offset reference oscillator modulation signal, and used as

a dc offset in receive mode.

3.2.3.5 Receiver Control

Setting 3.3VRXE enables the linear receiver chain. The DSP implements software AGC system to control the gain

of the linear receiver chain. The H8 controller monitors the actual received signal level by reading RSSI. At all

times during receive the RXVTF DAC2 output C must be set to the value in the EEPROM calibration table

corresponding to the receive frequency used. This makes the receiver’s front-end tunable filter centered on the

desired frequency. At all times in receive modes the second LO DAC2 line output B must be controlled using data

from the EEPROM calibration table and indexed with oscillator temperature data XTALMON. The temperature

compensates the second LO in the receiver chain.

3.2.3.6 Transmitter Control

The radio uses a complex H8 software-based algorithm to dynamically control the transmit power of the radio. The

inputs to the power control algorithm are: requested power level (0.1W, 0.5W, 1W, 2W, or 5W), PA calibration

data in the EEPROM, supply voltage BATMON (used for monitoring), transmit frequency, PA current, (used for

monitoring), and PA temperature (used for monitoring).

The power control algorithm takes these inputs and uses them to control the following outputs to provide a steady

RF power output with a clean rise and fall at switch on/off.

Output Description

PWRSET (DAC1 output A) Sets the power level in the power amplifier ALC loop

PABIAS1 (DAC1 output B) Adjusts the bias in the final driver stage

PABIAS2 (DAC1 output C) Adjusts the bias in the final driver stage

3.2.3.7 TX/RX Switching

The procedure needed to quickly switch the transceiver from receive to transmit and back again is to shut down the

current mode, lock the synthesizer in the new mode on the new frequency, and enable the transmitter or receiver, as

required.

GUARDIAN VHF 110W MOBILE 3-5

3.2.3.8 Receiver Scanning

In some scanning modes it is necessary for the radio to scan a number of channels looking for traffic, as controlled

by the H8 software. The basic requirement is to change the synthesizer frequency, RXVTF, synthesizer tune DAC,

and to resume searching on the new frequency. The DSP may have to be informed of new traffic settings on which

to search, for each new frequency. Scanning is interrupted when the DSP detects a signal of interest.

3.2.4 DC Power Control

The H8 controller software controls the power supply switching in the radio. The control software algorithm uses

the following inputs:

Input Description

/PWROFF Indicates the current position of the radio on/off switch and the accessory connector off line

WRU Indicates if the radio is fitted into a harness providing external power

/LBOUT Indicates the supply voltage is at the minimum required for correct operation

BATBUS Not used in the mobile configuration

BATMON Indicates the voltage on the main radio supply from external power source

These inputs are used to control the following FPGA outputs:

Output Description

PWRHOLD Set during normal operation, the radio stays on regardless of the on/off switch. When

PWROFF indicates that a switch off is required, software shut down is executed followed

by a release of this output

BATOFF Not used in the mobile configuration

Additionally the /LBOUT interrupt is used to execute a fast shutdown of the software when the supply voltage drops

below that needed for normal operation, or when the power source is removed without switching the radio off.

3.2.4.1 Power Supply Frequency Control

The power supply software controls the switch mode power supply frequency output according to the RF frequency

used. The frequency is checked and changed if necessary at every synthesizer frequency change.

3.2.5 Monitoring

The H8 software monitors the following signals:

Signal Description

Out-of-lock In all active modes, every 100 ms

EPTT/RTS In all modes, every 20 ms

RSSI In receive modes, every 100 ms

WRU In all modes, every second

DC voltage In all modes, every 5 seconds

PA temp In transmit modes, every second

REF temp In all modes, every 5 seconds

PA current In transmit modes, every second

3.2.6 Radio Control Drivers

A number of low-level software drivers are used by H8, which interface to the transceiver hardware.

3-6 GUARDIAN VHF 110W MOBILE

3.2.6.1 Audio and Power Supply Unit (PSU) Driver

A serial interface driver controls the output bits of a serial-to-parallel output shift register in the FPGA. Clock and

data source for this shift register is the same serial port used for the user interface serial bus, but data is directed to

the shift register using high-order H8 address lines.

3.2.6.2 Transceiver Serial Bus Driver

A serial interface driver controls the transceiver shift register, DAC, and synthesizer. It uses a common clock and

data line, and three separate strobe lines for each device.

3.2.6.3 DSP Host Driver

The H8 software includes a DSP host driver for controlling the DSP mode of operation, and initial start-up code

download.

3.2.6.4 IIC Bus Driver

The H8 software includes a driver that allows the controller software to read and write to the transceiver EEPROM

using IIC protocols. The two lines are general-purpose I/O lines controlled on a bit-by-bit basis by the software.

3.3 Digital Signal Processing

The DSP software implements all baseband signals processing in the radio. It processes signals between the user

audio and data interface, and the transceiver modulation and intermediate frequency (IF) interfaces. The signal

processing provides compatible analog FM modes, common air interface (CAI) compatible modes, and 12 kbps

secure CVSD modes.

3.3.1 DSP Transmit Chain

Signal processing while the radio is transmitting depends on the radio's operational mode. The possible modes are

clear analog voice FM, CVSD DES voice, Project 25 clear digital voice, and Project 25 DES digital voice. The

Transmit DSP Chain block diagram is shown in Figure 3-2. The major signal processing functions of the DSP

transmit chain are described in the following paragraphs.

3.3.1.1 Audio Coder/Decoder (CODEC)

The Guardian uses a Texas Instruments® TLV320-AC36 audio CODEC. Data is transferred to and from the

CODEC using the DSP enhanced synchronous serial interface (ESSI) 0 port. The data word is 16 bits long. The

first thirteen bits are the two’s compliment audio sample, and the last 3 are the volume control word in the receive

direction (DIN), and zero padded in the transmit direction (DOUT). The DSP currently sets volume control bits for

no attenuation. Scaling the signal prior to sending it to the CODEC controls the volume. The sample rate from the

CODEC is 8 ksps.

3.3.1.2 Audio Processing Board

The Audio Processing board receives audio input from the audio CODEC, applies filtering and automatic gain

control (AGC), and transmits it to the mode-specific formatting module. The audio filter has a passband from

300 Hz to 3 kHz. This board also transmits DTMF tones to the audio CODEC. DTMF over-dial is supported to

allow redirection through the phone network via a base station. Data is transferred to and from the CODEC under

interrupt service routine (ISR) control.

3.3.1.3 Project 25 Voice Module

The Project 25 Voice module performs framing and conversion tasks. The framing function uses its own task table

to build a CAI time-division multiple access (TDMA) frame. This includes compression of the voice signal using

the IMBE VOCODER, forward error correction, and encryption. The physical layer task converts a 4.8 ksps dibit

data stream into a 48 ksps real sampled waveform, which is then fed to the Modulation module. The physical layer

scales each dibit symbol so that the proper frequency deviation is attained. It applies raised cosine filtering for

control of inter-symbol interference.

GUARDIAN VHF 110W MOBILE 3-7

Figure 3-2: Transmit DSP Chain

3.3.1.4 CVSD DES Module

Audio data from the Audio Processing module is sent to the audio circular buffer. The sample rate is increased from

8 ksps to 12 ksps. The CVSD encodes the data and sends it to the transmit CVSD audio circular buffer. The data is

DES-encrypted and differentially encoded before sent to the physical interface buffer. The CVSD physical layer

converts the CVSD encoded, DES encrypted 12 ksps data stream into a 48 ksps waveform suitable for processing by

the Modulation module. The module contains a finite impulse response (FIR) raised cosine filter that acts as an

interpolation filter. Transmitting an end of message (EOM) indicator, consisting of 160 ms of alternating ones and

zeros, signals the end of a transmission. This allows the receiving radio to squelch the audio output before the radio

stops transmitting.

3.3.1.5 Analog FM Module

Audio data entering the Analog FM module is sent through a linear-phase, FIR, audio-shaping filter. Interpolation

from 8 ksps to 48 ksps is accomplished using a linear-phase, FIR filter. A single-quadrant sine look-up table (LUT),

using fractional addressing and quadrant folding, generates continuous tone controlled squelch system (CTCSS)

tones. If the DCS audio turn-off code is transmitted, the tone is fixed at 134.4 Hz and the codes transmitted at a rate

of 134.4 bps, derived using the CTCSS tone generator. The DCS data stream passes through a raised cosine filter

before added to the speech. The 8 ksps audio stream, with CTCSS/DCS controls, is interpolated to 48 ksps before

sent to the Modulation module.

3.3.1.6 Modulation Module

The Modulation module prepares the signal for transmission. The signal is split into a reference oscillator signal and

a voltage controlled oscillator (VCO) signal. This allows independent scale and offset values for each signal. A

modulation-balance variable scales the reference oscillator voltage, so that the maximum frequency deviation is

constant for all RF channels. A transmit modulation variable does the same for the VCO signal.

CVSD DES

Module

Audio

CODEC

Transceive

Audio

Processing

Module

Modulation

Module

Project 25 Voice

Module

Analog FM

Module

VOICE

DTMF

Tones

3-8 GUARDIAN VHF 110W MOBILE

3.3.1.7 Transceiver Interface

The transceiver DAC has four output ports, two of which modulate the carrier. One of the two channels maintains

carrier frequency accuracy. On transmit channel changes, the controller provides the DSP with two fractional values

used to scale the two signals output from the DAC. The controller provides the DSP with an additional integer value

at one second intervals, and is added to one of the DAC output signals to control carrier frequency accuracy. The

modulation interface receives modulation data samples at 48 ksps, independent of the transmit mode. When the

radio is operating as a transmitter, the transceiver interface controls the operation of the DAC via ESSI 1 on the

DSP. Data is written to the DAC at 96 ksps.

3.3.2 DSP Receive Chain

The radio receive chain hardware consists of an RF transceiver board, analog to digital converter (ADC), a

Motorola® DSP 56302 or DSP 56309, and an audio CODEC. The Receive DSP Chain block diagram is shown in

Figure 1-3. The major signal receive functions of the DSP receive chain are described in the following paragraphs.

Figure 3-3: Receive DSP Chain

3.3.2.1 Transceiver

The RF transceiver board performs mixing and filtering of the received signal to produce a 455 kHz, 25 kHz

bandwidth (BW), IF signal. The output signal from the transceiver is digitized by the ADC and fed to the DSP. The

bulk of signal processing is performed by the DSP. An ISR that implements the transceiver/ADC/DAC interface is

called at a rate of 96 kHz in receive modes. The ISR reads ADC output data, stores the values in a circular buffer,

and controls data transmission to the DAC.

3.3.2.2 FM Demodulator

The FM demodulator converts the FM output of the transceiver to a real-valued, baseband signal. FM demodulation

is implemented by a discriminator task. Sub-sampling the 455 kHz IF at 96 kHz folds down the signal to 25 kHz. A

mixing function mixes the sampled IF data in the input buffer before filtering. For 12.5 kHz channels, a second

CVSD DES

Module

Audio

CODEC

Transceiver

Audio

Processing

Module

Demodulator

Project 25

Voice Module

Analog FM

Module

Signal

Detectors

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filter is applied to the IQ data stream. Calculating the angular difference between consecutive IQ pairs demodulates

the received signal.

3.3.2.2.1 Analog to Digital Converter

Because the signal BW is much less than the 455 kHz carrier frequency, the ADC sub-samples the 455 kHz IF

producing a frequency translation as part of the sampling process. The ADC sampling rate is 96 ksps.

3.3.2.2.2 25 kHz Frequency Translation

The 25 kHz frequency translation converts the signal image into a baseband signal, centered at 0 Hz. The DSP

implements the digital equivalent of a mixer to perform frequency translation.

3.3.2.2.3 IF Filtering

The complex baseband signal is sent through two linear phase FIR filters. The first IF filter is used as a decimate by

two, polyphase, FIR filters and applied to the 96 ksps, complex, baseband output of the 25 kHz mixer. This filter

removes some of the out-of-band noise produced by the nonlinear analog components of the transceiver. CVSD

DES and analog wide modes have a 25 kHz BW and the first IF filter is the only filtering performed for these

modes. Project 25 and analog narrow modes have a 12.5 kHz BW. The second IF filter provides the filtering

required for these modes and is applied to the 48 ksps output of the first IF filter.

3.3.2.3 Signal Detectors

The radio uses three signal detectors to detect the presence or absence of a modulated signal in the tuned channel.

These signal detectors search for Project 25, analog FM (including noise, CTCSS, and DCS), and CVSD DES

signals.

3.3.2.3.1 Project 25 Detector

The Project 25 frame detector detects a Project 25 signal by searching for the frame synchronization (FS) signal and

network identifier (NID) embedded in the preamble of every Project 25 data unit. The detector uses this information

to perform bit recovery and packet identification. It processes and buffers the binary data for use by the Project 25

Voice Module. Once a target signal is detected, the radio disables squelch using an enable transmit function, so the

user can monitor the signal. If the detected signal is lost, squelch is enabled by the shutdown active receive

function.

3.3.2.3.2 Analog FM Detector

The analog FM detector uses a function to decimate the incoming data stream by six, to run the noise detector,

CTCSS single-tone detector, CTCSS multi-tone detector, and the DCS multi-code detector. A noise squelch detect

function detects the appearance of a carrier by searching for a drop in power in a frequency band just above the

audio band. In the analog noise detector, the input data is scaled and high-pass filtered, then rectified and scaled

again. Then the data is low-pass filtered. The output of the low-pass filter is used to determine whether or not a

signal is present.

The detector has two states, searching and locked. If the detector state is searching and the detected power drops

below the lower squelch threshold, the detector state transitions to locked. Conversely, if the detector state is locked

and the detected power rises above the upper squelch threshold, the detector state transitions to searching. Upper

and lower threshold values are BW dependent and can be adjusted at run time.

The multiple-value DCS detector searches for a 134.4 bps bit stream in the sub-audible frequency band used for

DCS codes. If found, the code is extracted and appropriate state variables updated. Code extraction is performed in

two steps: input data is converted to a binary bit stream, and then data extraction and code comparisons are

performed.

The conversion of the input data to a binary bit stream starts with the 8 ksps input data sent through a decimate by

six, FIR filter to produce a 1.33 ksps, real valued data stream. This filter removes any signal energy outside of the

sub-audible frequency band. The data is then split into two paths. The lower path estimates the dc content of the

signal with a narrow low-pass infinite impulse response (IIR) filter. Subtracting the lower path signal from the

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upper path signal removes the dc component from the upper path signal. Following this, the resulting signal passes

through a single-bit quantizer and the output buffered for use by the code removal step. Data extraction and DCS

code comparisons are then accomplished.

3.3.2.3.3 CVSD DES Detection

Detection of CVSD DES waveform is performed by a secure detection function. This function also recovers the

12 kbps bit stream from the 48 ksps input signal. The detector looks for a 12 kbps data stream to determine if a

CVSD signal is received.

3.3.2.4 Project 25 Voice Module

The physical layer task extracts FS, NID, SS symbols, and data. All other dibits are passed to the receive framing

task. The module performs recovery and symbol extraction based on frame synchronization using a correlation

detector. Symbol extraction and error-correction decoding follow carrier frequency offset compensation.

VOCODER data and Project 25 framing data is removed and secure mode decryption performed. The VOCODER

converts the compressed voice data stream to a 8 ksps audio data stream that is sent to the Modulation module.

3.3.2.5 Analog FM Module

The analog FM module performs two tasks. The detection task uses an FIR filter to down-sample the FM

demodulated bit stream from 48 ksps to 8 ksps. It then uses four detectors (noise, single-tone CTCSS, multi-tone

CTCSS, and multi-code DCS) to determine signal squelch. The post-detection audio-shaping task applies de-

emphasis on/off filtering to a received clear analog signal.

3.3.2.6 CVSD DES Module

The CVSD DES module consists of a 12 kbps clock detection/recovery task, a 12 kbps symbol resolver, a

differential decoder, a DES decoder, a 12 kbps CVSD decoder, and a 12 ksps to 8 ksps sample rate converter. The

input to the clock detection algorithm is a 48 ksps data stream, representing the sampled FM demodulated carrier.

To allow for variation in carrier frequency, the dc component of the demodulated carrier is removed before zero-

crossing detection. From a zero-crossing phase profile, a decision can be made whether a 12 ksps data stream is

present on the demodulated carrier, or a 12 kHz clock recovered for usage within the 12 kbps symbol resolver.

Differential encoding of the binary FSK modulation ensures compatibility between manufacturers, so that either a

positive or negative frequency shift can be used to represent a 1 symbol. In the CVSD receive chain, differential

decoding precedes one-bit cipher feedback DES decoding. To conserve memory and aid processing efficiency, all

symbols (encoded and decoded) are packed in memory. The 12 kbps CVSD decoder is modeled after FED-STD-

1023.

The decoder consists of a modulation level analyzer (MLA), a syllabic filter, a pulse modulator, a principal

integrator and a comparator. The output of the CVSD decoder is at 12 kbps and must be changed to 8 ksps for

output by the CODEC.

3.3.2.7 Audio Processing Module

An audio receive task function and an audio filter is used to output Project 25, clear analog, or secure analog speech

samples to the CODEC. When in active receive modes, the ISR is enabled and the task outputs data to the CODEC

circular buffer as data is written to it’s audio input circular buffer.

3.3.2.8 Audio CODEC

The audio CODEC and the DSP interface uses the DSP ESSI 0 port. The serial clock to the CODEC operates at

2.048 MHz, and is derived from the DSP internal clock. ESSI 0 is configured to operate using a frame rate divider

of 16 and a word length of 16 bits, transmitting packets of encoded audio to the CODEC at 8 kHz. The CODEC is

used in a linear decode mode, where 13 bits are used to represent the full audio range. The post-processed DSP

signal is fed to the audio CODEC, which converts the signal to an analog waveform, applies gain, and routes it to

the appropriate output device.

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3.3.3 DSP Software

The program data for the DSP is stored in 64K Flash program blocks. The data is stored as unpacked bytes. The

blocks used for the DSP software are dedicated so that selective upgrades of this code only are possible.

3.4 Keypad MPU Software

3.4.1 Overview

The keypad microprocessor unit (MPU) provides an indirect interface via the Motherboard to the DTMF keypad and

front panel switches. It communicates with the main controller via a synchronous bi-directional serial link.

3.4.2 General

The software is designed so that processor activity and current consumption is minimized. The only continuous

operation required is keypad scanning and switch reading. An external clock at 1.5 MHz clocks the keypad. The

hardware reset is supplied from the main controller.

3.4.3 Keypad Scanning

The keypad scanning software continuously scans the keypad at a rate of a row every 10 ms. A debounce period of

40 ms is used on key presses and key releases. The software deals with simultaneous key presses and key rollovers,

making only single key presses valid. Debounced and validated key presses are passed to the serial data output

buffer.

3.4.4 Push-to-Talk (PTT) Input

Inputs from the momentary input switches, and the PTT and auxiliary keys, are read every 10 ms and are debounced

for 40 ms. The validation software filters out simultaneous presses of the auxiliary keys and the key rollover

between them. Simultaneous presses of the PTT switch and one auxiliary key are allowed. Debounced and

validated auxiliary key presses and PTT press and releases are passed to the serial data output buffer.

3.4.5 Switch Input

Inputs from the rotary switches and toggle switch are read at least every 40 ms. Changes in state are debounced for

100 ms. Debounced new switch positions are passed to the serial output buffer.

3.4.6 LED Output

The outputs to the LED are controlled under instruction from the serial port. It is possible to set both outputs off, set

the red LED on, set the green LED on, set both LEDs on (orange), and to flash either or both on a 50% duty cycle at

a controlled rate of approximately 1 Hz.

3.4.7 Backlight Control

The two LCD backlight controls for setting bright and dim operations are controlled under instruction from the serial

port. The keypad uses a fixed level backlight operation. A timeout facility switches off the backlight after

30 seconds if not requested by the main controller.

3.4.8 Serial Interface

The keypad controller implements a synchronous bi-directional serial interface using its serial port allowing it to

interface to the main controller. The main controller always sources the serial data clock. To allow autonomous

transfers from the keypad controller, a separate keypad interrupt line is provided with the interface. The interrupt

line is used to request 8 clocks from the main controller to transfer data from the keypad. The LCD chip select (CS)

input line is used to distinguish between serial data for the keypad controller and LCD driver. The serial interface

supports the following transfers:

• Keypad to controller including:

3-12 GUARDIAN VHF 110W MOBILE

Keypad power up okay

Keypad error 1-n

Key press 1-16

Key release 1-16

PTT press

PTT release

Volume switch 1-16

Channel switch 1-16

Toggle switch 1-3

Auxiliary key press 1-3

Emergency key press

• Controller to keypad

• Request current switch status

• Reset and execute BIT test

• Backlight off/bright/dim

• LED off/red/green/yellow/flash/flash rate

• Key press request and interrupt acknowledge

LCD data transfers are in blocks of 80 bytes maximum, allowing a pause on the serial interface at least every 100 ms

for the keypad MPU to assert the interrupt and transfer key press or switch change data. During the LCD data

transfers, the key data are buffered into the keypad MPU.

3.5 Data Interface

The DSP incorporates a user data interface through its SCI port.

3.5.1 CAI Data Interface

The DSP supports an asynchronous data interface for CAI modes using its SCI port. This interface conforms to the

CAI data peripheral interface. It uses standard V24, and RS232 baud rates up to 9600 baud. The software also

controls the associated flow control signal data of the terminal ready (DTR) input to the DSP, and the clear to send

(CTS) output from the DSP. The request to send (RTS) input to the radio for this interface is processed by H8.

3.5.2 Synchronous Serial Data Interface

The DSP supports a 12 kbps synchronous serial port using its SCI port. The interface is half duplex, uses a DSP

generated clock, and includes minimum data buffering within the DSP and RTS/CTS flow control on the transmit

function.

3.5.2.1 Receiver Synchronous Serial Data Buffering

In receive synchronous serial data modes the DSP software uses a variable length first-in first-out (FIFO) buffer to

cope with differences in clock rates between the transmitter and receiver.

3.5.3 CAI Data Link Layer

This software provides the link between the raw voice and data bit streams, in addition to the data formats required

to implement a 9.6 kbps CAI compatible interface.

3.5.3.1 CAI Transmit Voice Mode

The DSP software takes the 144 bit voice code words (encrypted or not) and a number of link control fields set by

the host H8 or from the DES system, and formats CAI-compatible logic link data units.

3.5.3.2 CAI Transmit Voice Test Modes

The DSP software is capable of transmitting the CAI voice silence test pattern, the CAI 1 kHz test pattern and a

9 x 144-bit (1296) PRBS test pattern used for error rate tests. The H8 controller controls these test modes.

GUARDIAN VHF 110W MOBILE 3-13

3.5.3.3 CAI Receive Voice Mode

The DSP takes the 9.6 kbps CAI-compatible data stream and framing, and splits out the voice data for passing to the

VOCODER. The DSP decodes the link control words so that the host H8 can read the link control fields, and the

encryption synchronization information is available to the encryption process. CAI receive processing is initiated by

the frame synchronization correlator trigger. When this is asserted the next 64 bits of network identifier (NID) data

are decoded and checked. If the NAC code matches the one selected for the channel, voice or data processing

proceeds, otherwise the physical layer is forced into search mode.

3.5.3.4 CAI Receive Voice Test Mode

The DSP software is capable of testing the 9 voice code words received in a CAI frame against a known 9 x 144

PRBS segment. The total number of errors in that frame is then output to the H8 controller. The H8 controller

controls this test mode.

3.5.3.5 CAI Transmit Data Mode

The DSP selects the user data (encrypted or clear) and a number of link control fields set by the host H8 or from the

DES system, and formats logic link data units compatible with the CAI at 9600 bps.

3.5.3.6 CAI Receive Data Mode

The DSP selects the 9.6 kbps CAI-compatible data stream and framing, and splits out and decodes the data for

passing to the user data port. The DSP decodes the link control words so that the host H8 can read the link control

fields, and the encryption synchronization information is available to the encryption process.

3.5.4 Transmit Physical Link Layer

This software uses common modulator interface software and a number of mode-dependent, physical link layer

software modules.

3.5.4.1 Transmit Modulation Interface

The software provides a common interface to the dual modulation, DAC in the transceiver through its SSI serial port

1 for all transmit modes. In transmit modes, the SSI uses an externally sourced clock at 3072 kHz. This interface

takes frequency deviation samples at 48 kHz, and writes each value scaled by a fixed number set by the host to both

the reference oscillator DAC and the VCO DAC. Additionally a host-controlled dc offset is added to the reference

oscillator DAC value.

3.5.4.2 Transmit CAI Physical Link Layer

This software takes the 9.6 kbps CAI-compatible data stream and converts it to 48k samples of frequency deviation

data. To achieve this the software implements the dibit for symbol mapping, Nyquist, and shaping filters as

described in the CAI.

3.5.4.3 Transmit Analog FM Physical Link Layer

This software takes the 8 ksps filtered audio and converts it to 48 ksps of frequency deviation data compatible with

TIA/EIA-603 in 12.5 kHz and 25 kHz modes. The signal processing uses additional high-pass filtering to reduce the

energy in the DCS tone band, audio band pre-emphasis if required, DCS tone addition, and deviation limiting and

smoothing. The software is capable of operation in 12.5 kHz, and 25 kHz channel spacing with appropriate

deviation scaling. It is capable of appending a phase reversed tone burst of 180 ms as defined in EIA-603,

generating DCS and audio turn-off codes, and companding the voice signal in 12.5 kHz mode.

3.5.4.4 Transmit CVSD Physical Link Layer

The transmit CVSD physical link layer converts the 12/16 kbps CVSD data stream and converts it to 48 ksps of

frequency deviation data. The software implements a pre-modulation filter with raised cosine time response and

100% eye height.

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3.5.5 Receive Physical Link Layer

This software uses common FM demodulation software, and mode-dependent receiver physical layer software

modules.

3.5.5.1 Receive ADC and DAC Interface

In receive modes SSI port 1 is used in a duplex manner to allow the ADC to be read continuously at 96 kHz and the

DAC written up to 48 ksps for AGC and reference oscillator adjustment. In receive modes, the SSI port is clocked

at 1536 kHz from an external clock source, using a 16-bit cycle. At every cycle a value is read out of the ADC. At

every other cycle a value may be written to one of the DAC channels to control the AGC and reference oscillator.

3.5.5.2 FM Demodulator

This software provides a common interface to the 96 ksps IF signal at SSI port 1 and produces 48 ksps of frequency

deviation data for use in all modes. The SSI port uses an external clock at 1536 kHz. The software implements an

FM demodulator function using a quadrature mix with a 24 kHz (Fs/4) local oscillator, dual I and Q channel filters,

and a frequency estimator. The channel filtering function is programmable-dependent on the channel spacing used.

The channel filtering provides the adjacent channel filtering in addition to that provided by the hardware to achieve

the radio adjacent channel rejection performance.

3.5.5.3 Receive CAI Physical Link Layer

This software takes the 48 ksps of frequency deviation data and outputs a 9.6 kbps data stream. The software

implements an integrate and dump filter and data slicer as described in the CAI. The integrate and dump filter is

controlled by a clock recovery function that selects one of ten possible phases for output to the slicer. The slicer

incorporates an averager with a time constant of at least 100 bits, to correct for dc offsets in the received signal.

In parallel with the above, a FIR correlator searching for the CAI fixed framing sequence of 24 symbols operates on

the filtered 48 ksps of frequency deviation data. The correlator operates at 10 samples per symbol. The correlator

phase with the highest correlation peak selects the clock phase for use in the integrate and dump filter and slicer.

This correlator operates continuously when searching for CAI traffic and occasionally when tracking an CAI signal

when subsequent frame syncs are expected. The correlator trigger is used to provide a framing signal for the

subsequent CAI link layer processing.

3.5.5.4 Receive Analog FM Physical Link Layer

This software takes the 48 ksps frequency deviation data and outputs 8 ksps of audio to the receive audio processing.

Software signal processing implements a high-pass filter to remove CTCSS tones and de-emphasis if required. The

gain of the signal path is adjusted to cope with the different deviations used on different channel bandwidths. The

signal processing signal path is controlled by squelch signals. The software includes audio expanding to reverse the

transmit companding.

3.5.5.5 Receive CVSD Physical Link Layer

This software takes the 48 ksps frequency deviation data and outputs 12/16 kbps serial data. The software uses a

data filter, a slicer, and a clock recovery function.

3.5.6 DES Encryption

The DSP software implements DES encryption of traffic in the CAI and CVSD modes.

3.5.6.1 DES Kernel

The DSP software implements the DES encryption kernel as described in FIPS 46-2, encrypting 64 data bits using a

56-bit key. It uses output feedback operation or a single bit cipher feedback operation.

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3.5.6.2 CAI Encryption

The DSP software uses DES kernel software to implement the CAI encryption of voice traffic as described in

TIA/EIA/IS-102.AAAA. The key manager supplies the encryption key. In transmit, the message indicator (MI)

vector is passed to data link processing for encoding and transmission. In receive, the data link layer decodes the MI

vector, and fly wheeled if decoding fails for up to n frames.

3.5.6.3 DES Data Link Layer

This software encrypts and decrypts the 12 kb of CVSD data using the DES kernel. During transmit, framing

synchronization data and the MI vector are inserted into the data stream. In receive, the software searches for and

extracts the framing and MI data. Bit definitions and formats are defined in the DES protocol.

3.5.6.4 Key Interface

This software provides an interface for inputting DES encryption keys from the DSP SCI port using synchronous

data transfers with an external clock, and for conforming to the Motorola KVL data transfer mechanism and the CAI

DES keyfill protocol.

3.5.6.5 Key Bank

The radio maintains a bank of up to 16 encryption keys stored in Flash memory. Associated with each key are a key

ID, key data, and an 8-character alphanumeric tag. Each encrypted channel is assigned one of the 16 keys for both

secure transmit and secure receive modes. Channel key assignment is accomplished by selecting the corresponding

key tag. Upon entering the secure transmit or secure receive mode, H8 transfers the appropriate encryption key to

the DSP through the SCI port.

3.5.7 Host Interface

The DSP is controlled through its host interface by H8. It initially boots up through this interface. The host

interface is used for DSP mode control, encryption key transfer, link control data transfer, low-rate data transfer,

frequency variable data transfer, CTCSS mode control, and initial software download.

3.5.8 Flash Interface

The DSP has direct access to the main radio Flash memory through the H8 bus arbitration logic. This interface is

used for software downloads using byte-wide direct memory access (DMA) transfers under host control for mode

changes. The DSP software does not write to Flash memory.

3.5.9 Paging

The DSP software is designed so that normal operation does not involve off-chip bus accesses. This means the code

size must be limited to 24K words and the data memory to 10K words. A number of program images that

correspond to different modes are allowed, with paging of images out of Flash by the DMA at mode changes. The

minimum subdivision of images corresponds to the following modes, and a continuously resident core host interface

function.

• Initialization/POST

• Receive 12.5 kHz

• Receive 25 kHz

• Transmit 12.5 kHz

• Transmit 25 kHz

• Keyfill

The paging DMA mechanism is controlled by the host H8 and allows the transfer of a program image within 50 ms.

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3.5.10 Hardware Control

The DSP software controls the DSP clock rate through the phased locked loop (PLL) output divider. The DSP clock

rate is dynamically matched to the mode of operation, in coarse steps for example, between searching and tracking

receive modes. The DSP software uses low-current wait modes in pauses between processing to minimize current

consumption. The host is also able to request a very low-current idle mode in the DSP. The host releases this mode.

3.6 Controller Software

3.6.1 Overview

The controller software has overall control of the radio; including user interface operations, and the DSP and

transceiver. Figure 1-4 is the controller software block diagram.

Figure 3-4: Controller Software

3.6.2 Environment

3.6.2.1 General

The H8 controller system is designed for minimum external bus activity and minimum current consumption. These

features are provided by the maximum use of low-current standby modes in H8, and an interrupt-driven architecture,

with a minimum of input polling. In radio standby and receive modes the only H8 tasks are the control of the

transceiver frequency and DSP mode as the radio scans and economizes. The most H8-intensive activities are

associated with user interactions, and operations on the fill/program/control port.

3.6.2.2 Scheduler

H8 operates with a simple scheduler that launches tasks after interrupt events. A time base interrupt of 10 ms is

used to keep track of time and poll inputs at regular intervals.

Radio Store

MMI Software

MMI Drivers (AVR)

Alarms Switches

and Keys LCD

Fill Data

Radio Control Software

Audio BIT

Monitor

EEPROM DSP

PSU

Control Battery

Power/Mode

Control

Frequency

Control

Transceiver

Driver

Audio/PSU

Driver

DSP

Host

IIC Bus

Driver

BATBUS

Driver

Fill/Program/

Control

Software

Serial

Port

Drive

Environment

Software

Main

Controller/

Schedule

Debug

Serial

Driver

FPGA

Configure

Driver

Software Update

Drive

Radio

State

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3.6.2.2.1 Interrupt Sources

The following interrupt sources are used in H8.

Interrupt Source Description

User interface External interrupt from the keypad

DSP External interrupt from the DSP, signal detected, etc.

Low dc voltage External NMI from power supply indicates power supply fail

Timer Internal time base tick interrupt every 10 ms

PC serial port Internal interrupt from PC interrupt serial port

UI serial port Internal interrupt from user interface serial port, key press, and LCD data

Debug serial port Internal interrupt from DMA/timer

Alarm generator Internal interrupt from DMA/timer

3.6.2.2.2 Polled Inputs

The H8 software polls the following inputs at regular intervals.

Input Description

EXTPTT/RTS External PTT and data RTS

OOL Synthesizer out of lock

PWROFF On/off switch position

SENSE External keyfill device detect

The following analog inputs are measured as appropriate to the radio mode of operation.

Input Description

RSSI Receiver signal strength

WRU External device detect

BATT Main radio 10V supply monitor

PA TEMP Transmitter temperature

XTAL TEMP Reference crystal temperature

PA CURRENT Transmitter current

3.6.2.2.3 Watchdog

A regular watchdog service task is scheduled to prevent the H8 watchdog controller from overrunning, and a

hardware reset from occurring. The target watchdog timeout is 100/200 ms.

3.6.2.3 Start-Up Software

3.6.2.3.1 Boot Block Start-Up Software

The minimum simplest start-up software is provided in the boot block of the Flash. This software holds the keypad,

DSP, user interface, and FPGA in reset, and then establishes whether a valid H8 program image exists in the

program blocks of the Flash. If no valid program exists, a simple alarm sounds. The boot block software includes a

minimum basic BIT facility to check the code itself, and the internal and external random access memory (RAM).

The boot block code includes the software to allow programming of the program blocks through the PC serial port.

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3.6.2.3.2 Full Start-Up Software

If a valid H8 program image exists, the full start-up code executes. This involves initializing RAM, DSP, keypad,

user interface, FPGA, transceiver, etc., executing the start-up BIT, and transferring control to the main scheduler.

3.6.2.3.3 FPGA Configure Software

At start-up H8 configures the FPGA using data from the main Flash memory and transferring it via a synchronous

serial bus to the FPGA.

3.6.2.4 Shut Down Software

At normal shut down when the front panel on/off switch is off, the H8 software executes a clean shut down to the

transceiver, DSP, and user interface (UI), saves any usage data to the Flash, and releases the main power supply. In

cases where the power is removed, the low-power interrupt executes a minimum fast shut down, saving RAM data

as required, with no Flash update.

3.6.2.5 Debug Driver Software

The H8 controller includes software to implement an asynchronous serial port on two input/output (I/O) pins of H8.

Facilities provided include the ability to monitor particular radio variables, and to control specific variables. This

port allows PC serial access to the board during board-level factory testing, through the test connector.

3.6.3 Radio Store

All functional areas of the controller software, including the user interface, access the radio data store, fill control,

and radio software.

3.6.3.1 Physical Data Storage

The radio data is physically stored in 4 devices, all devices are accessible by the controller software.

3.6.3.1.1 H8 Internal RAM

The H8 controller has 2K x 8 of internal RAM. This data is not retained when the radio is switched off or the power

is removed. It is used for short-term storage of frequently accessed variables, stack workspace, etc. to minimize bus

activity when the H8 controller is running. The internal RAM is used as program space from which to execute

during some Flash update operations.

3.6.3.1.2 External RAM

H8 is provided with an external 128k x 8 bit RAM that is backed up for at least 30 seconds when the radio power is

removed, and at all times when a external power is applied with the radio switched off. This device is used as a

variable data expansion area, and stores specific user-entered data that must be retained over power interruptions

(unlock password, etc.).

3.6.3.1.3 Flash ROM

H8 has a 512k x 16-bit Flash read-only memory (ROM) used primarily for program storage. Data in the Flash is

retained permanently. Different areas of the Flash have different characteristics. The boot sector is a 16k block

used for the reprogramming software and the radio serial number. The data in this sector is programmed or block-

erased only in the factory.

The Flash has 15-64k and 6-8k program blocks that can be block-erased and programmed by the boot block code

during normal reprogramming operations, without special equipment and without opening the radio. These blocks

are used for H8 and DSP operating software, radio fill data, and FPGA programming data. The Flash has two small

8k parameter blocks used for changing data that must be stored indefinitely, such as user specific settings and usage

data.

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3.6.3.1.4 Transceiver EEPROM

The radio transceiver has an 8k x 8 serial EEPROM for storing transceiver calibration data. This data is set during

production testing for the specific transceiver. The data in this device is essentially constant and is never written to

by the main controller. At switch on, contents of the EEPROM are copied into the external RAM; EEPROM is not

accessed during normal operation.

3.6.3.2 Data Types

The controller software uses a number of different data types.

3.6.3.2.1 Volatile Variables

Variable data used by the H8 controller that is not retained when the radio is switched off, is stored in the H8

internal RAM and the external RAM.

3.6.3.2.2 Short Term Stored Variables

Variable data retained while the radio is switched off or the power is interrupted, is stored in the external RAM.

3.6.3.2.3 Permanent Stored Variables

Variable data retained indefinitely is stored in the parameter blocks of the Flash. Every time this data changes, a

parameter block must be erased, and the new data written into the now blank parameter block.

3.6.3.2.4 Radio Fill Data

The frequencies, modes, and power levels are associated with different channels programmed into the radio. This

data is programmed into the radio through the fill port.

3.6.4 Program/Fill/Control Interface

The controller provides a serial port for PC access to allow the following functions:

Function Description

Programming To update radio software

Filling For modifying the radio data store of modes and frequencies, etc.

Control For controlling the radio operating mode

3.6.4.1 Radio Programming

The controller software allows reprogramming of the Flash memory program blocks, on a block-by-block basis.

During these operations, the controller executes from the boot sector of the Flash and no radio or user interface

operations are possible. After a programming operation, cycle the power on the radio. Programming operations are

initiated on receipt of a specific serial message on the PC serial port.

3.6.4.2 Radio Fill

The controller provides the facilities to modify the system, group, bank, and radio global data through the PC serial

port. This interface provides the following facilities:

Facility Description

Radio erase Delete all fill data in the radio

Selective erase Delete (mark as deleted) specific systems, groups, and banks (for

future use)

Radio fill Add specific systems, groups, banks, and global data to the radio store

Radio read Export the fill data contents of the radio store to the PC

3-20 GUARDIAN VHF 110W MOBILE

All transfers and operations on the fill port are cyclic redundancy checked (CRC) and acknowledged.

3.6.4.2.1 Cloning

The radio can export channel data to other radios. Data export is initiated by a user interface operation at the

exporting radio. The exporting radio emulates a PC programmer during the data transfer. Cloning of keyfill data

is not allowed.

3.6.4.2.2 Radio Keyfill

The DSP software manages the radio keyfill protocols.

3.6.4.3 Radio Control Port

It is possible for an external PC to control the functioning of the radio. This provides the following facilities:

• Radio status read to export the radio serial number, revision status, history, usage, etc.

• Set external control mode

• Set radio transmit frequency, power level, and mode

• Set radio receive frequency and mode

The transceiver mode control also allows transmission of 1 kHz test tones in analog modes, and BER test patterns in

digital modes. The receiver mode control allows the continuous (every 0.5 second) output of the bit error count per

frame in digital modes.

3.6.4.4 PC Serial Port Driver

The controller software controls the H8 serial port to implement the asynchronous data formats and baud rates

(9,600, 19,200, and 38,400) for the PC serial port. The serial port driver software also controls the 232OFF signal to

maintain the RS232 in its low-current standby state, except when data is driven out and while RTS is asserted.

3.7 User Interface

The radio interface is described in the following paragraphs.

3.7.1 Display

The radio has an 80 x 32 dot matrix LCD display. Some of the features of the display are:

Feature Description

Phone Indicated by an icon in the top, right of the display (for future use)

Scan Indicated by SCAN****, SRCH****, or ZONE**** flashing in the top row of the display

Encryption Indicated by a key icon

Power level Indicated by HI/LO/2W in the bottom row of the display

Priority scan Indicated by SCANP1 (P2), SRCHP1 (P2), or ZONEP1 (P2) flashing in the top row of the

display

Receive only channel Indicated by an RX in the bottom, left corner of the display

Talkaround Indicated by a TA in the bottom, left corner of the display

Repeater mode Indicated by a receiver icon in the bottom, left corner of the display

Emergency message EMG displays in the bottom, left corner when the radio is transmitting an emergency

message

3.7.2 Optional DTMF Microphone

The radio is programmed using DTMF microphone. For detailed instructions on programming the radio a DTMF

microphone, see the Guardian operator manual (G25AMK004).

GUARDIAN VHF 110W MOBILE 4-1

CHAPTER 4: INSTALLATION, ADJUSTMENT, AND OPERATION

4.1 Radio Configuration

4.1.1 Channels

A channel consists of a receive and transmit frequency pair. The radio has a total of 256 selectable channels. Each

channel can be programmed for different receive and transmit frequencies, squelch, modulation, encryption, and

power. Each channel can have one of possible 16 keys assigned on a channel-by-channel basis. An 8-character

alphanumeric label identifies each channel or by its channel number if no text label. Up to 7 shadow channels can

be added to each channel. They enable the radio to be used in several squelch/encryption modes on each physical

channel.

4.1.2 Zones

A zone is a group of channels. Each zone can be assigned up to 16 channels. The radio can store up to 16 zones, or

groups of channels. The zones can be assigned names of up to 8 alphanumeric characters and assigned to banks

during programming. Three zones can be selected by the toggle switch, 16 zones by the front panel keyboard.

Channels are mapped to the channel select switch positions using the Guardian PC programmer. When a zone is

active (selected), channels within the zone are selected using the 16-position channel select switch on the front panel

of the radio.

4.1.3 Banks

A bank is a group of zones. Zones are assigned to banks during programming. The radio can store up to 4 banks of

16 zones each. Banks are assigned names of up to 8 characters.

4.2 Installation and Adjustment

4.2.1 Hardware

Install using the Datron approved bracket.

4.2.2 Software

The manufacturer offers software updates when required. Software updates can be performed via an external port.

No radio disassembly is required.

4.3 Operating Procedures

4.3.1 Connect the Power Source

Use only the Datron approved power cable set, negative ground only.

4.3.2 Connect the Antenna

The antenna connects to the radio through a UHF antenna connector. For best VSWR, make sure to match the

antenna before operation.

4.3.3 Optional External Speaker

Use the accessory connector on the rear panel of the radio to connect the external speaker.

4.3.4 Radio Programming

Prior to the first time of operation, the radio must be programmed using the Guardian programming kit. For

information about programming a radio using the PC programmer, refer to the Guardian programming manual. For

PTT lockout during a programming sequence, refer to the Interface board description in Chapter 2.

4-2 GUARDIAN VHF MOBILE

4.3.5 Radio Power Up

Turn on the radio using the on/off/volume knob. The radio performs a self-test and sounds a short medium-pitched

tone to indicate PASS. Use the switch to set the volume to a comfortable level. Select the desired channel using the

channel select switch. The process takes 3 to 5 seconds before the radio is ready for operation.

4.3.6 Choose a Channel

The default display shows the current zone and channel. Use the channel select switch to select a different channel

in the zone. To change zones, program one of the side keys, program the three-position toggle switch to zone select,

or program through the display using the select menu.

4.3.7 Transmit a Voice Message

Press the PTT switch on the palm microphone, hold the radio 2 to 6 inches from your mouth, and speak in a clear

voice.

4.3.8 Receive a Voice Message

To receive a voice message, release the PTT. Use the PC programmer or the radio program menu to set or adjust the

squelch level, CTCSS tones, DCS variables, NACs, and/or talk-group identifiers (TGIDs) as required.

4.3.9 Programming and Bypass Mode

For description of these features, refer to the Interface board section in Chapter 2.

GUARDIAN VHF 110W MOBILE 5-1

CHAPTER 5: RADIO SET AND ACCESSORIES

5.1 System Description

The Guardian consists of the following components:

• Receiver/Exciter/Control Module (RECM)

• Front Panel Interface

• Motherboard

• Heatsink Assembly

For available accessories, contact a Datron Guardian representative.

5.1.1 Mobile Radio

The Guardian is a vehicular-mounted transceiver capable of providing secure and non-secure communications over

the 136 to 174 MHz RF range. The radio includes an LCD, emergency push button, speaker, microphone, multi-

function accessory connector, three programmable function keys, 16-position channel select rotary knob,

on/off/volume rotary knob, 3-position programmable toggle switch, antenna connector, dc power connector, and two

LED status indicators. The Guardian features adjustable power output ranging from 25W to 110W. Operational

modes include:

• Clear analog voice FM, 12.5 and 25 kHz

• DES CVSD modulation voice, 25 kHz, 12 kbps

• Project 25 clear digital voice, 12.5 kHz

• DTMF overdial

5.1.2 Antenna

The antenna is a SO239 (UHF) jack mounted to the rear panel.

5.1.3 Guardian PC Programmer

Note: For some programming features, refer to the Interface board section in Chapter 2.

The Guardian programming kit is compatible with Windows 95/98/NT, capable of loading or modifying

programming information into the radio from a PC. It includes software, a detailed operator manual, and an RS232

compatible programming/cloning cable. The cable connects the PC serial port to the accessory connector on the rear

panel of the radio. See the Guardian programming manual for a complete description of PC programming. The PC

programmer is capable of programming the following settings:

Bank tag

Special channels: Priority channels 1 and 2, emergency channel, and home channel

BANK

Zones/available zones

Zone tag

Scan list

ZONE

Channels/available channels

Channel tag

Channel type

Bandwidth

Receive only option

Options: Scan list, talkaround, and locked

Encryption: Enable, and key

CHANNEL

Transmit Power: High and low RF power levels

5-2 GUARDIAN VHF MOBILE

Receive and Transmit Parameters: Operating frequencies, P25 NAC (digital),

talkgroup (digital), squelch mode/value (analog), and shadow channels

User (configuration name)

User ID P25

Keys and Switches: Auxiliary switch (1-3) function, toggle switch function, and

emergency button function

Programming Access: Programming enable, and programming password

Scan: Revert mode, scan delay, scan reply, and monitor time

Transmit: Transmit inhibit/override, and transmit time-out

GLOBAL

Emergency: Alert mode, duration timer, and repeat timer

Key tag

Key ID

KEY

Key data

5.1.4 Cloning Cable

The Guardian G25AXG004 programming/cloning cable is used to transfer programming information (excluding

crypto keys and global parameters) from one radio to another radio. The cable connects to the radio accessory

connector on both the sending (source) and receiving (target) radios. Each cable end is labeled accordingly (source

and target) for ease of use.

5.2 Controls, Indicators, and Connectors

Consult the Guardian operator manual for detailed operating instructions.

5.2.1 Controls

The radio controls consist of a 16-position channel rotary knob, an on/off/volume rotary knob, a 3-position toggle

switch, 3 programmable function keys, an emergency push button, a PTT switch, and a 16-button keypad.

5.2.1.1 On/Off/Volume Rotary Knob

The on/off/volume knob located on the front panel of the radio is a 16-position rotary switch. The first position is

off, the second position is on with the speaker off (mute), and the remaining positions are used for increasing

volume levels.

5.2.1.2 16-Channel Rotary Knob

The channel select knob, located on the front panel of the radio, is used to rapidly switch between the programmable

16 channels.

5.2.1.3 3-Position Toggle Switch

The 3-position toggle switch located on the front panel of the radio is programmed using the PC programmer for

zone select, transmit encryption enabled/disabled, scan on/priority/off, high/low power, talkaround on/off, monitor

(squelch adjust) on/off, and disabled.

5.2.1.4 External Speaker Switch

The external speaker provides 10W of clear communications audio from the radio. Comes with data and speaker

cable. Set the speaker switch to I for internal speaker operation, E for external, or B for both speakers

simultaneously.

5.2.1.5 PTT Switch

The PTT switch is located on the microphone.

GUARDIAN VHF 110W MOBILE 5-3

5.2.1.6 Programmable Keys

Three programmable keys are located on the front panel of the radio. These keys are programmed using the PC

programmer for the following functions:

• Backlight dim/bright/off (for future use)

• Encryption on/off

• Scan list add/delete

• Keypad disable (for future use)

• Monitor on/off

• Scan on/priority/off

• Signal strength meter on/off

• Talkaround

• On/off

• Home channel

• Audible tones on/off (for future use)

• Next zone (future use)

• Open microphone (for future use)

• Previous channel (for future use)

• Disabled

5.2.1.7 Optional Emergency Button

Program the emergency button for emergency operation or for zeroize operation. If programmed for emergency

operation, pressing the button activates the emergency calling. The emergency condition remains active until

cleared by turning off the radio. When the emergency mode is activated, an emergency message is broadcast over

the emergency channel. There are two programmable modes: audio (full alert and silent), and display (alert and

silent). In full-alert mode, EMERGENCY flashes on the display and an audio tone is sounded. In silent mode, there

is no audio tone and no LED indication. If the emergency button is programmed for zeroize operation, all

encryption keys contained in the radio are erased.

5.2.1.8 Optional DTMF Microphone

The optional DTMF microphone includes a 12-button keypad with positive feedback on the front panel. The keypad

provides adjustable backlighting for nighttime viewing.

5.2.2 Indicators

5.2.2.1 LCD

The radio contains a full graphics 80 x 32 pixel LCD that uses characters and graphics to provide the operator with

radio operating information. The display provides backlighting for nighttime operation.

5.2.2.2 LED

The 3-color LED provides the operating status of the radio. The LED is viewable from front panel of the radio and

provides radio status as follows:

LED Indication

Red Transmitting

Green Receiving/busy channel indicator

Flashing green Receiving encrypted transmission

Orange Emergency/low dc power voltage

5-4 GUARDIAN VHF MOBILE

5.2.2.3 Audible Tones

The radio has several audible tones that are activated by states of operation or by radio faults. These tones are

described in Chapter 9.

5.2.3 Connectors

5.2.3.1 Accessory Connector

The accessory connector is a DB25 connector located on the rear panel of the radio. This connector is used for

multiple functions, including PC programming, keyfill, cloning, external speaker, and audio accessory attachment.

The pin names and functions are defined in Chapter 10.

5.2.3.2 Antenna Connector

The antenna connector is a SO239 jack.

5.2.3.3 DC Power Connector

The dc power connector is a 9-pin D connector in the rear panel of the radio.

5.3 Transceiver Characteristics

The radio frequency range is 136 to 174 MHz with channel spacing of 12.5 or 25 kHz, tunable in 5 kHz steps.

5.3.1 Transmitter Characteristics

5.3.1.1 Transmitter Output

The transmitter output consists of a single channel FM carrier using either conventional 12.5 or 25 kHz FM

modulation, or 12.5 kHz compatible 4-level FM (C4FM). The signal source is analog or digitized voice signals.

5.3.1.2 Transmit Squelch

Transmit squelch parameters are required to enable selective squelch communications options. These parameters

are described below.

5.3.1.2.1 Analog Transmit Squelch

There are 3 types of analog transmit squelch:

Type Description

None No squelch is included with the analog transmit signal

CTCSS Sub-audible CTCSS squelch tones are included with the analog transmit signal

DCS DCS variables are superimposed on the analog transmit signal

5.3.1.2.2 Digital Transmit Squelch

There are 4 types of digital transmit squelch:

Type Description

None No squelch is included with the digital transmit signal

Network Access

Code (NAC)

A digital NAC is transmitted with the Project 25 digital transmit signal. The

primary purpose of this code is to allow the user access to a repeater network

TGID A digital TGID is transmitted with the Project 25 digital transmit signal. The

primary purpose of this selective digital calling identification is to group users into

functional teams

GUARDIAN VHF 110W MOBILE 5-5

Type Description

Individual Call TGID is automatically set to 0000 (hex) and the user ID of the targeted radio is

activated within the Project 25 digital transmit signal

5.3.2 Receiver Characteristics

5.3.2.1 Receiver Performance

The receiver is capable of demodulating a single-channel FM carrier using either conventional 12.5 kHz FM, 25 kHz

FM, C4FM, or compatible quadrature phase shift keying (CQPSK) modulation. The receiver demodulates analog or

digital voice and data signals. The radio circuitry receives clear messages while operating in secure mode, and

secure messages while in the clear mode, if encryption is enabled.

5.3.2.2 Receive Squelch

5.3.2.2.1 Analog Receive Squelch

There are 3 types of analog receive squelch:

Type Description

Carrier (noise) Squelch is opened on any intelligible analog signal

CTCSS Squelch is opened on any analog signal having the correct CTCSS tone

DCS Squelch is opened on any analog signal having the correct DCS variable

5.3.2.2.2 Digital Receive Squelch

There are 4 types of digital receive squelch:

Type Description

Monitor Squelch is opened on any intelligible digital signal. The NAC and talkgroup ID do not

have to match

Normal Squelch is opened on any digital signal having the correct NAC

Selective Squelch is opened on any digital signal having the correct NAC and TGID

Individual call Squelch is opened on a digital signal having a TGID of 0000 (hex) and a user ID matching

that of the receiving radio

5.4 Communication Security

The radio is capable of secure communication by means of type-3, software-based encryption, and is fully

compatible with any radio using Project 25 DES encryption. When the radio is operating in the secure mode, the

transmission of all tone squelch signals is disabled.

5.4.1 Algorithms

The radio is capable of single-bit cipher feedback (SBCF) DES (compatible with other manufacturers) 25 kHz

channels.

5.4.2 Keyfill

Keyfill is accomplished through the radio accessory connector using the PC programmer. The PC programming

cable is used to load the keys. The radio can store up to 16 encryption keys. The radio retains encryption keys until

they are rewritten or zeroized.

5-6 GUARDIAN VHF MOBILE

5.4.3 Zeroize

The radio can be programmed using an optional, external emergency key to zeroize all encryption keys. Using the

programming menu, the radio can also zeroize all encryption keys, or selectively zeroize individual encryption keys.

The emergency key is programmed using the PC programmer.

GUARDIAN VHF 110W MOBILE 6-1

CHAPTER 6: SERVICING THE RADIO

6.1 General

There are no user serviceable parts in the Guardian radio. Return it for servicing to the manufacturer after

requesting an RMA number. Attempts to service the Guardian radio by non-authorized personnel voids the

warranty.

6.2 Self-Test at Power Up

At radio switch-on, the H8 controller executes a number of tests to confirm correct operation. Any errors are

reported to the user through displayed error messages and logged in the Flash. The tests implemented include:

• Flash checksum CRC

• RAM read and write

• FPGA configuration

• DSP host interface

• Keypad interface to AVR

• DC bus interface

• Transceiver EEPROM interface

• Synthesizer lock tests top and bottom frequencies, lock time, etc.

6.3 Caution

Repair of some parts of this unit require special tools and soldering techniques not normally available in a field

service environment. DWC highly recommends the module subassemblies be returned to the factory for service.

Damage can easily occur from repair attempts by non-trained personnel.

GUARDIAN VHF 110W MOBILE 7-1

CHAPTER 7: TROUBLESHOOTING

7.1 Introduction

This chapter is included to help qualified service personnel troubleshoot and repair the Guardian radio. If questions

or problems arise, contact Datron Technical Support Services Group, Datron World Communications Inc., 3030

Enterprise Court, Vista, CA 92083, or phone (760) 597-3755, or email to: guardianservice@dtwc.com. For

additional troubleshooting information, refer to the following sections of this manual:

• Chapter 2: Hardware Theory of Operation

• Chapter 3: Software Theory of Operation

• Chapter 4: Installation, Adjustment and Operation

• Chapter 11: Schematics

This chapter contains basic functional tests. Once the problem is corrected, restart the tests.

7.2 Radio Functional Tests

The tests in this chapter require the radio to be tested as programmed. It is best to program all 3 auxiliary buttons to

Hi/Lo power, the emergency button to emergency, and the toggle switch to zone select. Program the radio with

eighteen channels, 3 zones, and 1 bank. Put 16 channels in zone 1, 1 channel in zone 2, and 1 channel in zone 3. For

all of the channels, use assigned transmit and receive frequencies, turn transmit squelch off, and set receive squelch

to carrier, level 8. When more than one remove and receive tasks are shown in a block, they are listed in order from

most to least probable for fixing the problem. It is recommended that the remove and repair tasks are tried one at a

time, and the radio re-tested until the problem is fixed.

The tests outlined below provide an overall check of the radio to ensure it is working properly.

7.2.1 Power-On Test

This test ensures that the radio turns on, the latest software version number briefly appears, a beep is heard, and an

operational screen appears on the LCD.

7.2.2 Buttons and Switches Test

This test ensures that the PTT, auxiliary buttons, toggle switch, emergency key, keypad, on/off/volume switch, and

channel switch work.

7.2.3 Transmit Test

This test ensures the radio has the required transmit power, frequency accuracy, and deviation.

7.2.4 Receive Test

This test ensures the radio LED works, a 1 kHz tone is heard, and that SINAD is within specified limits.

7.2.5 Audio Test

This test ensures that the radio’s internal speaker and microphone are working. If the radio fails this test, please

contact Datron for radio servicing.

7-2 GUARDIAN VHF MOBILE

GUARDIAN VHF 110W MOBILE 8-1

CHAPTER 8: DEFINITIONS

Alert Mode: Display and audio properties are used when the emergency key is pressed. In normal mode, the display

flashes EMERGENCY and an audio tone is heard. In silent mode, the display is blank and no audio tone is heard.

Analog-to-Digital Converter (ADC): An electronic device for converting data from analog to digital form for use

in electronic equipment.

Backlight: The light behind the keypad and LCD enables the keys and LCD to be visible in dark conditions.

Backlight Delay: The time the backlight remains on after the last keypad activity.

Bandwidth (BW): A small range of frequencies around a transmit or receive frequency in which a message can be

received or transmitted.

Bank: A group of zones. There are up to 4 banks per radio. Up to 16 zones can be distributed through these

4 banks.

Channel: A memory location with defined receive, transmit, squelch, modulation, and power settings. There are

256 channels per radio.

Channel Locked: An indicator informing that channel settings cannot be programmed using the LCD and keypad.

The settings can only be changed using the PC programmer.

Channel Scan: Scans all channels on the scan list in a given 16-channel zone. The scan starts on the home channel,

checks each channel in the scan plan, returns to the home channel, and then scans each channel in the scan plan.

Common Air Interface (CAI): The CAI standard allows interoperability within any Project 25 system provided

they are all in the same frequency band.

Continuous Tone-Controlled Squelch System (CTCSS) Tone: A sub-audible tone superimposed on an analog

signal to reduce interference from traffic and background noise.

Digital Coded Squelch (DCS): A digital variable superimposed on a digital signal to reduce interference from

traffic and background noise.

Digital Signal Processor (DSP): Handles all signal-processing functions.

Digital to Analog Converter (DAC): A device that takes a digital value and outputs a voltage that is proportional to

the input value.

Dual-Tone Multiple-Frequency (DTMF): A signaling scheme used by the telephone system in which two-voice

band tones are generated for each keypad key press.

Global Search: Scans all frequencies programmed into the radio, regardless of scan list designation.

Initial Synchronization: The length of time required for the radio to perform encryption synchronization.

Microprocessor Unit (MPU): A computer’s entire CPU is contained on one (or a small number of) integrated

circuit.

Monitor Receive Squelch: The radio receives any intelligible analog transmission.

Monitor Timer: The amount of time the radio stays on a channel picked up during the scan and before the radio

reverts back to scan mode.

Network Access Code (NAC): Selective squelch for digital mode. The primary purpose is to allow the user access

to a repeater network. In radio-to-radio communications, these codes are used to eliminate interference from other

traffic and background noise.

Normal Receive Squelch: The radio receives any transmission having the correct NAC.

Priority 1 Scan: Priority 1 channel is sampled during scanning, receive of an active channel, or standby. Activity

on the priority1 channel overrides all other modes except emergency.

8-2 GUARDIAN VHF MOBILE

Priority 2 Scan: Priority-2 channel is sampled in a similar fashion to the priority-1 channel. Activity on the

priority-2 channel overrides all other modes except emergency and priority 1.

Receive Only Channel: A feature that does not allow outgoing transmissions on the channel. It is used for channels

in which transmission is prohibited (i.e., weather channels). If PTT is pressed on a receive-only channel, RX ONLY

appears on the display.

Receiver/Exciter/Control Module (RECM): Transceiver module containing all radio functions except RF/audio

amplifiers and display/keypad circuitry.

Repeater Delay: A delay timer used to prevent a radio from receiving its own transmission from a tactical repeater.

Scan Delay: The amount of time the scanner dwells on an active receive channel after the carrier is dropped. This

prevents another message from being received before a response can be made.

Scan Reply: If a PTT press interrupts the scan delay timer, this is the amount of time allowed to ensure a reply to a

received message.

Scan List: A group of channels in a zone that are designated as active scan list channels. Channels are added or

deleted from the scan list using the PC programmer or the radio keypad.

Scan Revert Channel: The transmit channel that the radio reverts to when PTT is pressed during or following a

scanned message.

Search Mode: The radio scans for and opens on carrier only regardless of CTCSS, DCS, or the digital ID.

Selective Receive Squelch: The radio receives any transmission having the correct NAC and TGID.

Shadow Channel: The radio of primary channels, each of which can have up to 7 shadow channels. A shadow

channel has the same transmit and receive frequencies, options, and transmit power levels as its primary channel.

Individual shadow channels can be configured for different channel types (analog or digital), BW (12.5 or

25 kHz for analog channels), squelch modes, P25 NACs (digital channel only), and encryption key (only one primary

or shadow channel can have CVSD DES enabled). When properly configured, shadow channels can be created to

allow a user to hear all transmissions on a receive/transmit frequency regardless of channel type, BW, squelch mode,

or encryption. Shadow channels are created and their settings edited using the PC programmer.

Talk Group Identifier (TGID): Selective squelch for the digital mode, used to group users into functional teams.

Transmit Inhibit and Override: A feature that stops users from talking over other radio conversations. There are

three options: CARRIER prevents transmission if any activity is detected on the channel, TONE prevents

transmission on an active channel with a squelch code other than your own, and NAC prevents transmission on an

active channel with the same NAC. There is a quick-key override feature available that allows a user to override the

transmit inhibit state by quick-keying the radio (i.e., 2 PTT presses within a short time frame).

Transmit Timeout: Prevents inadvertent or prolonged transmit operations.

User Interface: The same as a man-machine interface.

Zone: A group of channels. There is a maximum of 16 zones per radio and each zone can contain up to 16 channels.

Three zones can be selected using the toggle switch or 16 zones selected by the radio keypad.

Zone Scan List: A group of zones in a bank designated as active scan list zones. Zones are added or deleted from

the scan list using the PC programmer or the radio’s keypad.

GUARDIAN VHF 110W MOBILE 9-1

CHAPTER 9: SIGNAL TONES

Tone Signal Cause

Key press error Invalid key pressed

Failed power on self-test (POST) Radio fails POST

Transmit time-out warning Time-out about to interrupt PTT

Brief low-pitched

Empty channel warning No RX/TX frequencies programmed for the

channel

Transmit time-out timed out Transmit time is exceeded and PTT still pressed

Transmit inhibit PTT switch is pressed and there is activity on the

transmit channel

Invalid mode No programmed data on the selected channel

Steady low-pitched

Radio locked Radio locks after 3 consecutive wrong password

attempts

Key press Valid key press is accepted by the radio

Radio passed POST Radio passed POST

Brief medium-pitched

Clear voice received Radio is receiving a clear signal

Emergency call state Emergency button is pressed Repeated medium-pitched

Key error Encryption is selected but no key is present

Brief high-pitched Low dc supply voltage DC supply voltage falls below a preset value

Repeated high-pitched Individual call An individual call is received

9-2 GUARDIAN VHF MOBILE

GUARDIAN VHF 110W MOBILE 10-1

CHAPTER 10: CONNECTOR PINOUTS

10.1 Accessory Connector Pins and Functions

Pin Signal Name Description

1 RS232_RXD Receive data line output (DCE), RS232 level

(>+3V=ZERO, <-3V=ONE)

2 RS232_RTS Data port control input (DCE), RS232 level (>+3V=ON, <-3V=OFF)

3 SERIAL_CLOCK Synchronous clock output to PC terminal (DCE), RS232 level

(>+3V=ZERO, <-3V=ONE)

4 RS232_CTS Data port control output (DCE), RS232 level (>+3V=ON, <-3V=OFF)

5 PC_232RXD Programming receive data line output (DCE), RS232 level

(>+3V=ZERO, <-3V=ONE)

6 SQUELCH_INF Squelch, low on valid receive signal, 7.8V squelched

7 GND Ground

8 EXTERNAL_SPEAKER_N Balanced audio output from RECM, 500 mW into 8 ohms

9 EXTERNAL_PTT/KID PTT input asserted by voltage closure to ground or pseudo-random key

insert data, LVTTL level input

10 7.7V Test point for internal regulated voltage supply

11 EXTERNAL_MIC/WE Microphone input or key transfer indicator input, asserted by voltage

0.8 Vdc

12 GND Ground

13 INTERNAL_SPEAKER_P Balanced audio input from external device; can override RECM audio

output signal

14 PTT_SWITCH PTT input asserted by voltage closure to ground

15 RS232_DTR Data port control input (DCE), RS232 level (>+3V=ON, <-3V=OFF)

16 PC_232TXD Programming transmit data line input (DCE), RS232 level

(>+3V=ZERO, <-3V=ONE)

17 RS232_TXD Transmit data line input (DCE), RS232 level

(>+3V=ZERO, <-3V=ONE)

18 WRU_MONITOR Voltage input identifies external device

19 EXT_10W_SPEAKER_N Balanced audio output for external 10W 4-ohm speaker

20 EXT_10W_SPEAKER_P Balanced audio output for external 10W 4-ohm speaker

21 EXTERNAL_MIC_BIAS/KEY Microphone bias or bi-directional key data, LVTTL levels

22 EXTERNAL_SPEAKER_P/KLD Balanced audio output from RECM, 500 mW into 8 ohms or LVTTL

low-output level when keyloader is connected

23 EMERGENCY_SWITCH Active low control to transmit emergency signal

24 IGN_SW Power switch override input. Ground forces off, open enables switch

25 INTERNAL_SPEAKER_N Balanced audio input from external device; can override RECM audio

output signal

10-2 GUARDIAN VHF MOBILE

10.2 Power Connector Pins and Functions

Pin Signal Name Description

1 BATTERY Battery power

2 GROUND Ground

3 IGN_SW Ignition switch

4 EXTERNAL_10W_SPEAKER_N External speaker

5 EXTERNAL+10W_SPEAKER_P External speaker

6 BATTERY Battery power

7 GROUND Ground

8 GROUND Ground

9 EMERGENCY_SWITCH Emergency switch

10.3 Microphone Jack Connector Pins and Functions

Pin Signal Name Description

1 EXTERNAL_MIC_BIAS/KEY Keyload line

2 GROUND Ground

3 INTERNAL_MIC Microphone audio

4 EXTERNAL_MIC/WE Keyload line

5 PTT_SWITCH Push-to-talk line

6 BIAS(+) Microphone power

7 EXTERNAL_SPEAKER_P/KLD Keyload line

8 EXTERNAL_PTT/K1D Keyload line

GUARDIAN VHF 110W MOBILE 11-1

CHAPTER 11: SCHEMATICS

994466 A

14-May-2002 11:06:32994466A.Sch

Title:

Size: Drawing Number:

Date:File:

Rev:

Sheet of

Time:

SCHEMATIC, KEYPAD/DISPLAY

Schematic

Date:

Appr:

Drawn:

REV ECN DESCRIPTION DATE APPR

3030 Enterprise Ct.

Vista, CA 92083

(760)597-3777

LCD_CLOCK

LCD_TX

LCD_CS_N

LCD_RESET_N

LCD_DATA_MODE

V3.3_LCD

AUXILLARY_SWITCH_1

AUXILLARY_SWITCH_2

AUXILLARY_SWITCH_3

ENTER

MENU KEY 3

MENU KEY 2

MENU KEY 1

KEYPAD_SCAN_OUT_1

KEYPAD_SCAN_OUT_2

KEYPAD_SCAN_OUT_3

KEYPAD_SCAN_IN_1

KEYPAD_SCAN_IN_2

MENU KEY 1

LCD_CLOCK

LCD_TX

LCD_CS_N

LCD_RESET_N

LCD_DATA_MODE

V3.3_LCD

AUXILLARY_SWITCH_1

AUXILLARY_SWITCH_2

AUXILLARY_SWITCH_3

KEYPAD_SCAN_OUT_1

KEYPAD_SCAN_OUT_2

KEYPAD_SCAN_OUT_3

KEYPAD_SCAN_IN_1

KEYPAD_SCAN_IN_2

ABE SABET 04-12-01

A 02-0128 RELEASE 02-19-02

+7.7V

+7.7V C1

.01

PART OF LCD MODULE 320803

LCD_BACKLIGHT

P13

620171

080010002

.01

994478 A

14-May-2002 10:55:16994478A.Sch

Title:

Size: Drawing Number:

Date:File:

Rev:

Sheet of

Time:

AUDIO AMP BD, GUARDIAN 100W MOBILE

Schematic

Date:

Appr:

Drawn:

REV ECN DESCRIPTION DATE APPR

3030 Enterprise Ct.

Vista, CA 92083

(760)597-3777

INT_5W_SPEAKER_P

INT_5W_SPEAKER_N

INTERNAL_SPEAKER_P

AUDIO_INTERNAL_DISABLE

R10

10K

EXTERNAL_10W_SPEAKER_N

EXTERNAL_10W_SPEAKER_P

INTERNAL_SPEAKER_N

AUDIO_EXT_DISABLE

+IN1

--IN1

GND1

Vref

OUT1 5

BS1 6

GND2

BS2 8

OUT2 9

Vp 10

M/SS 11

+IN2

TDA1516BQ

1uF/25V

R16

10k

R15

10k R33

10k

R13

10k

R14

10k

R19

10k SWBAT

0ohm

+IN1

--IN1

GND1

Vref

OUT1 5

BS1 6

GND2

BS2 8

OUT2 9

Vp 10

M/SS 11

+IN2

TDA1516BQ

1uF/25V

10k

10k R21

10k

R12

10k

SWBAT

0ohm

C14

0.1uF

C15

0.1uF

C22

47uF,20V

C21

47uF,20V

C19

47uF,20V

C20

47uF,20V

INTERNAL AUDIO AMPLIFIEREXTERNAL AUDIO AMPLIFIER

1uF/25V C6

1uF/25V

R17

10K

1nF

R18

10k

R11

10k

2N7002

R43

0ohm

C55

1uF/25V

OSMT

1nF C10

1nF

2.7uH

R46

100k

R23

R24

R44

100K

R34

10k

R26

10k

R22

10k

R35

10k

R27

300

R38

2.67K-1%

R30

10k

R32

10k

R28

10k

PA_PTT

U4A

LM2903

4 8

VCC

GND U3C

LM2904

U3A

LM2904

2N7002

7.8Vsw

LED_TX

7.8Vsw

C16

0.1uF

C53

10uF

EMERGENCY_SWITCH

EXTERNAL_10W_SPEAKER_P

EXTERNAL_10W_SPEAKER_N

10uH C13

1nF

SWBAT

RS232_RTS

SQ_INF

RS232_CTS

EXTERNAL_10W_SPEAKER_N

RS232_DTR

EXTERNAL_10W_SPEAKER_P

RS232_TXD

RS232_RXD

INTERNAL_SPEAKER_P

PC_232TXD

SERIAL_CLOCK

PC_232RXD

EXTERNAL_MIC/WE

EXTERNAL_PTT/KID

EXTERNAL_SPEAKER_N

PTT_SWITCH

WRU_MONITOR

EXTERNAL_MIC_BIAS/KEY

EMERGENCY_SWITCH

EXTERNAL_SPEAKER_P/KLD 7.8Vsw

INTERNAL_SPEAKER_N

610458

FB23

FB22

FB21

FB20

FB19

FB17

FB16

FB15

FB14

FB13

FB12

FB11

FB10

FB9

FB8

FB7

FB6

FB5

FB4

C52

100pF

FB18

C26

100pF

C27

100pF

C28

100pF

C29

100pF

C30

100pF

C31

100pF

C32

100pF

C35

100pF

C36

100pF

C38

100pF

C39

100pF

C41

100pF

C42

100pF

C43

100pF

C44

100pF

C45

100pF

C46

100pF

C47

100pF

C48

100pF

C50

100pF

C51

100pF

C40

100pF

C49

100pF

R36

10k

ON/OFF

R39

1.27k-1%

MMBT2222

R45

0OHM

FB1 FB2

SWBAT

C17

0.1uF

C33

100pF

C34

100pF

C25

.01uF

C37

100pF

FB3

PAD

C12

1nF

U4B

LM2903

U4C

LM2903

SWBAT

C18

0.1uF

U3B

LM2904

R37

0ohm

R53

10k

R55

560

R54

1.82K-1%

610457

7,8 5,6

Q10

IRF7328

FB24

4148

R60

10k

C58

1nF

R56

1.05K,1%

R52

10k

7.8Vsw

IGN_SW

PF1

550044

PANEL MNT

VBAT

7.8Vsw

C56

1uF/25V

R41

51.1K-1%

10K/10K

U6A

LM2903

U6C

LM2903

U6B

LM2903

R20

100k

200k

7.8Vsw

2N7002

R29

100

R40

10k

7.8Vsw

R50

2.67K

C82

1uF/25V

C57

DNP

Vout 2

+Vin

ADJ

LM350T

C11

10uF

R51

12.7K

R47

100K

MMBT2907

MMBT2222

R49

1.05K,1%

SWBAT

C23

0.1uF

R48

10k

613507

3.3V VBAT SWBAT 7.8V

FB25

Q12

IRLML6302

Q11

2N7002

ON/OFF

R62

10K

7.8V

1N6278

Q15

2N7002

Q14

2N7002

Q13

2N7002

Q16

MMBT2222

R63

100k R64

100k

7.8Vsw7.8Vsw

7.8Vsw

R65

100k

C24

1uF/25V

PTT_SWITCH

TP21

3.3V SWBATVBAT 7.8V

R66

DNP

R67

0OHM

R69

10k

R68

270

ON/OFF

PA_PTT

LED_TX

INT_5W_SPEAKER_N

INT_5W_SPEAKER_P

AUDIO_INTERNAL_DISABLE

AUDIO_EXT_DISABLE

INTERNAL_SPEAKER_P

INTERNAL_SPEAKER_N

EXTERNAL_SPEAKER_P/KLD

EXTERNAL_MIC_BIAS/KEY

WRU_MONITOR

RS232_TXD

PC_232TXD

RS232_DTR

EXTERNAL_MIC/WE

EXTERNAL_PTT/KID

PC_232RXD

RS232_CTS

SERIAL_CLOCK

RS232_RTS

RS232_RXD

EXTERNAL_SPEAKER_N

7.8V

PTT_SWITCH

SQUELCH_INDICATOR

IGN_SW

EMERGENCY_SWITCH

3.3V

TP21

BIAS

VBAT_TP

C54

1nF

R25

6.2K

FD1FD2FD3

BOM:125-50220

PCB:738534

C38

DNP

R31

0OHM

R42

0OHM

R57

0OHM

994483 A

14-May-2002 10:56:49994483A.sch

Title:

Size: Drawing Number:

Date:File:

Rev:

Sheet of

Time:

GUARDIAN MOBILE, 110WPA

Schematic

Date:

Appr:

Drawn:

REV ECN DESCRIPTION DATE APPR

3030 Enterprise Ct.

Vista, CA 92083

(760)597-3777

C26

.01uF

C37

1nF

68nH

C62

47uF,20V C63

47uF,20V

C35

1uF/25V

SWBAT2

R36

1k C32

.01uF

C28

.01uF

BATT+

BATT-

C14

0.1uF

C16

1uF/25V

R40

DNP

C10

DNP

4 8

VCC

GND

U6C

LM2904

MMBD4148

R28

0ohm

3U3A

LM2904

100pF

C11

DNP

R12

10k

U4A

LM2904

C20

1uF/25V

0.01ohm-1%

SWBAT1

100pF

74nH

C72

DNP

R25

10K

LM35

U12

LM35

TEMP SENSOR

IRF4905

C39

1nF

C17

1uF/25V

C27

.01uF

FB2

C23

1uF/25V C8

100pF

C94

2.2pF

C105

1nF

R75

8.25k

C33

DNP

R15

10k

R87

402k

R85

6.19k

R86

5.62k

100k

C67

.001uF

C66

.001uF

R26

C53

1nF

C54

18pF

D10

1N6278

OUT 1

Vin+ 3

V+

GND

Vin- 4

DNP

C55

6.8pF C81

DNP

R39

1k C29

.01uF

C40

1nF

C64

47uF,20V C65

47uF,20V

C30

.01uF

C19

0.1uF

C21

1uF/25V

R42

DNP

C12

DNP

U6B

LM2904

MMBD4148

R30

0ohm

100pF

C13

DNP

R19

10k

4 8

VCC

GND

U3C

LM2904

100pF

Q10

IRF4905

C22

1uF/25V

C31

.01uF

C34

DNP

R22

10k

R57

20.5k

100k

C58

18pF

OUT 1

Vin+ 3

V+

GND

Vin- 4

DNP

M68702H

RF_IN

DC1 2

DC2 3

RF_OUT 4

GND

701363

M68702H

RF_IN

DC1 2

DC2 3

RF_OUT 4

GND

U10

701363

Vdet

R18

10k

R11

10k

Vdet

Vtemp

Vdet

MMBD4148

Vtemp

MMBD4148

Vtemp

Vref

R33

R32

4 8

VCC

GND

U4C

LM2904

C15

1uF/25V

U4B

LM2904

C106

DNP

112

TX2SA-5V-X

112

TX2SA-5V-X

D14

6.8V

SWBAT1

C51

1nF

C49

1nF

FB5

115uH

ANTENNA

RADIO

FB4

FB3

C47

1nF C48

1nF

L12

2.7uH

U3B

LM2904

4 8

VCC

GND

U7C

LM2904

3U6A

LM2904

C25

1uF/25V

SWBAT1

R55

0.01ohm-1%

R63

100k

SWBAT1

6U7B

LM2904

Q12

2N7002

R37

20.5K R27

10k

R59

20.5K

R58

20.5K

SWBAT2

Vref

68k

100k

Vref

C98

0.1uF C100

10uF

C18

1uF/25V

10k

U7A

LM2904

MMBD4148

R20

5.62K 1%

R34

R48

100k

Vdet

R66

0ohm

D13

6.8V

R88

1.8K

R72

100-1/2W

R71

100-1/2W

SWBAT1

Q11

2N7002

R62

100k

C99

0.1uF

D12

6.8V

C50

1nF

C52

1nF

C46

1nF

R50

10ohm

R51

10ohm

C41

1nF

C38

1nF

C70

10pF C73

DNP

C95

2.2pF

C57

DNP

C69

.001uF

C68

.001uF

C103

6.8pF

1uF/25V 7

U8B

LM2904

SWBAT2

U8A

LM2904

4 8

VCC

GND

U8C

LM2904

080002001

610551

R92

0ohm

R31

1k R41

D15

6.8V

R89

68K

R21

7.5K

MMBT2222

R46

2.7K

R14

330 C80

150pF C82

150pF C83

DNP

C84

4.7pf

C43

10pF C71

12pF

68nH

74nH

C60

DNP

C75

2.2pF

C42

6.8pF C77

DNP

C56

10pF C61

DNP

C76

2.2pF

C78

DNP

C59

10pF C74

12pF

R13

51.1K

R61

100k

E7 E6

CHASSIS

GND

R17

150-1/2W R23

150-1/2W R24

150-1/2W R29

150-1/2W R35

150-1/2W R38

150-1/2W

CURRENTXFMR

R44

100

R47

100

VR1

10K/11T

100K

DTA114EKA

2N7002

DTA114EKA

2N7002

COAX BYPASS-WHEN INSTALLED

R49

DNP

R67

150

R65

150

R64

150

R60

150

MMBD4148

Q13

MMBT2222 Q14

MMBT2222

Q15

MMBT2907

R53

10k

R69

10k

R68

10k

MMBD4148

R45

100k

R52

68K

R54

30.1K

C79

1uF/25V

TPC8106-H Q17

TPC8106-H

TPC8106-H Q18

TPC8106-H

10k

TPC8106-H Q19

TPC8106-H

Q16

TPC8106-H Q20

TPC8106-H

1N6278

1uF/25V

U5A

LM2904M 7

6U5B

LM2904M

4 8

VCC

GND

U5C

LM2904

C24

1uF/25V

SWBAT1

U11A

LM2904M 7

6U11B

LM2904M

4 8

VCC

GND

U11C

LM2904

1uF/25V

SWBAT2

Q22

2N7002

R81

DNP

R80

DNP

R82

DNP

R76

15K

R74

15K

R43

4.99K

R56

4.99K

Q21

2N7002

R79

DNP

R78

DNP

R77

DNP

R70

15K

R73

15K

R10

4.99K

R16

4.99K

FD1

FDU

FD2

FDU

FD3

FDU

PCB:738536

BOM:125-50110

SWBAT2

R84

R83

DNP

D11

MMBD4148

C36

100pF

C44

DNP

C45

DNP

994484 A

14-May-2002 10:57:49994484A.sch

Title:

Size: Drawing Number:

Date:File:

Rev:

Sheet of

Time:

GUARDIAN 100W MOBILE, CONTROL BD

Schematic

Date:

Appr:

Drawn:

REV ECN DESCRIPTION DATE APPR

3030 Enterprise Ct.

Vista, CA 92083

(760)597-3777

10 10

11 11

12 12

13 13

14 14

15 15

16 16

17 17

18 18

19 19

20 20

21 21

22 22

23 23

24 24

25 25

26 26

27 27

28 28

29 29

30 30

31 31

32 32

33 33

34 34

35 35

36 36

37 37

38 38

39 39

40 40

41 41

42 42

43 43

44 44

45 45

46 46

47 47

48 48

49 49

50 50

51 51

52 52

53 53

54 54

55 55

56 56

57 57

58 58

59 59

60 60

61 61

62 62

63 63

64 64

65 65

66 66

67 67

68 68

69 69

70 70

71 71

72 72

73 73

74 74

75 75

76 76

77 77

78 78

79 79

80 80

610354

LCD_CLOCK

LCD_TX

LCD_CS_N

LCD_RESET_N

LCD_DATA_MODE

KEYPAD_SCAN_OUT_1

KEYPAD_SCAN_OUT_2

KEYPAD_SCAN_OUT_3

KEYPAD_SCAN_IN_3

KEYPAD_SCAN_IN_4

KEYPAD_SCAN_IN_5

KEYPAD_SCAN_IN_6

INTERNAL_SPEAKER_P

INTERNAL_SPEAKER_N

INTERNAL_MIC

INTERNAL_PTT

AUXILLARY_SWITCH_3

AUXILLARY_SWITCH_2

AUXILLARY_SWITCH_1

VOLUME_SWITCH_1

VOLUME_SWITCH_2

VOLUME_SWITCH_3

VOLUME_SWITCH_4

TOGGLE_SWITCH_1

TOGGLE_SWITCH_2

CHANNEL_SWITCH_1

CHANNEL_SWITCH_2

CHANNEL_SWITCH_4

CHANNEL_SWITCH_3

EMERGENCY_SWITCH

LED_RED_N_SYS

LED_GREEN_N

EXTERNAL_MIC_BIAS/KEY

EXTERNAL_MIC/WE

WRU_MONITOR

EXTERNAL_PTT/KID

EXTERNAL_SPEAKER_N

EXTERNAL_SPEAKER_P/KLD

PC_232TXD

PC_232RXD

RS232_RTS

RS232_CTS

RS232_DTR

RS232_TXD

RS232_RXD

SERIAL_CLOCK

RADIO_OFF_SC_N

SQUELCH_INDICATOR

4148

Q1 11

Q2 12

Q3 13

Q4 14

TOE

StD

ESt

INH

VDD 18

VREF 4

VSS

IN+

IN-

St/GT

17 OSC1 7

OSC2 8

CM88L70

R47

DNP

3.3DTMF

R13

100k

R14

100k

C54

.01uF

C53

.01uF

C26

0.1uF

C40

47uF,20V

C22

0.1uF

ESt

3.579545 MHZ

C21

0.1uF

3.3V

C28

0.1uF C29

0.1uF

FB13

FB R45

DNP

PTT_SWITCH

KEYPAD_SCAN_IN_1

KEYPAD_SCAN_IN_2

R43

560

FB11

R25 0ohm

R24 DNP

3V3_LOGIC

FB9

VOLUME_SWITCH_1

VOLUME_SWITCH_2

VOLUME_SWITCH_3

VOLUME_SWITCH_4

ON/OFF

FB8

AUDIO

INTERNAL_PTT

FB7

FB INTERNAL_PTT

1Y 1

1Z 2

2Y 4

2Z 3

3Y 8

3Z 9

4Y 11

4Z 10

VEE

7VCC 14

74HC4016

Y5 6

Y0 11

Y2 10

Y1 9

GND

Y13 13

/LE

Y6 5

Y15 15

Y12 14

Y7 4

Y4 7

Y14 16

Y3 8

Y8 18

Y9 17

Y11 19

Y10 20

Vcc

74HC4514

1Y 1

1Z 2

2Y 4

2Z 3

3Y 8

3Z 9

4Y 11

4Z 10

VEE

7VCC 14

74HC4016

KEYPAD_SCAN_IN_5

KEYPAD_SCAN_IN_6

KEYPAD_SCAN_IN_3

KEYPAD_SCAN_IN_4

KEYPAD_SCAN_OUT_1

KEYPAD_SCAN_OUT_2

KEYPAD_SCAN_OUT_3

3.3DTMF

C23

0.1uF

C25

0.1uF

3.3DTMF

47K

DTA144EK

47K

Q10

DTA144EK

47K

DTA144EK

2N7002

KEYPAD_SCAN_IN_2

R35

100

R36

100

R37

100

R38

100

R46

270k

C27

0.1uF

R50

DNP ESt

47K

DTA144EK

R29

0ohm

R15

100k

KEYPAD_SCAN_IN_1

47K

DTA144EK

3.3V

R28

0ohm

R26

0ohm

R27

0ohm

C24

0.1uF

C30

0.1uF

1Y 1

1Z 2

2Y 4

2Z 3

3Y 8

3Z 9

4Y 11

4Z 10

VEE

7VCC 14

74HC4016

FB10

FB 3.3DTMF

3.3DTMF

C39

DNP

ON/OFF

R22

PAD

E10

PAD

R2 1k

R1 1k

R21 10k

C42

DNP

C43

DNP

C44

DNP

C33

1uF/16V

R49

220K

R48

220K

10K

Q11

DTA114EKA

10K

Q12

DTA114EKA

10K

Q13

DTA114EKA

10K

Q14

DTA114EKA

C41

DNP

R20

10k

C32

1uF/16V

R51

47.5k

2N7002

3.3V 3.3V

C31

1uF/16V

(ESCAPE)

(ENTER)

R16

10k

R17

10k

R19

10k

R18

10k

R12

100k

FB6

FB5

FB4

FB3

FB2

FB1

DNP

C10

DNP

C11

DNP

C12

DNP

C13

DNP

PAD E2

PAD

12V

C14

100p C15

100p C16

100p C17

100p C18

100p C19

100p

PAD

+3.3V_LCD

PCB: 738535

BOM: 125-50210

610669

BIAS(+)

PTT_SWITCH

EXTERNAL_MIC/WE

INTERNAL_MIC

EXTERNAL_SPEAKER_P/KLD

EXTERNAL_PTT/KID

C52

100p

C45

100p

C51

100p

C50

100p

C49

100p

C48

100p

C47

100p

C46

100p

621112

LCD_CLOCK

LCD_TX

LCD_RESET_N

LCD_DATA_MODE

AUXILLARY_SWITCH_1

AUXILLARY_SWITCH_2

AUXILLARY_SWITCH_3

KEYPAD_SCAN_OUT_1

KEYPAD_SCAN_OUT_2

KEYPAD_SCAN_OUT_3

KEYPAD_SCAN_IN_1

KEYPAD_SCAN_IN_2

LCD_CS_N

+3.3V_LCD

R40

0ohm

7.8Vsw

LED_TX

LED_GREEN_N

VOLUME_SWITCH_3

VOLUME_SWITCH_4

SW3

510038

VOLUME_SWITCH_1

VOLUME_SWITCH_2

R33

100

R30

DNP R31

DNP R32

DNP

C38

DNP

INT_5W_SPEAKER_P

INT_5W_SPEAKER_N

RED

GRN

035500004

VOLUME

SW4

510038

AUDIO_EXT_DISABLE

CHANNEL_SWITCH_1

CHANNEL_SWITCH_2

CHANNEL_SWITCH_4

CHANNEL_SWITCH_3

R39 100

R34

330

CHANNEL

2N7002

FB12

OUT3

3OUT2

ADJ

NC 8

OUT6 6

OUT7 7

NC 5

U1 LM317

R53

270

R54

150

R52

249

TOGGLE_SWITCH_1

TOGGLE_SWITCH_2 SW1

TOGGLE

SW2

TOGGLE

AUDIO_EXT_DISABLE

AUDIO_INTERNAL_DISABLE

EXTERNAL_MIC_BIAS/KEY

L10

DNP

L11

DNP PC_232TXD

PC_232RXD

R60 0OHM

LED_RED_N_SYS

DNP

0ohm

LCD_BACKLIGHT_N

KEYPAD_BACKLIGHT_N

ON/OFF

10K

R56

330

R57

330

RED

ON/OFF

PA_PTT

LED_TX

INT_5W_SPEAKER_N

INT_5W_SPEAKER_P

AUDIO_INTERNAL_DISABLE

AUDIO_EXT_DISABLE

INTERNAL_SPEAKER_P

INTERNAL_SPEAKER_N

EXTERNAL_SPEAKER_P/KLD

EXTERNAL_MIC_BIAS/KEY

WRU_MONITOR

RS232_TXD

PC_232TXD

RS232_DTR

EXTERNAL_MIC/WE

EXTERNAL_PTT/KID

PC_232RXD

RS232_CTS

SERIAL_CLOCK

RS232_RTS

RS232_RXD1

613507

EXTERNAL_SPEAKER_N VBAT

7.8V

PTT_SWITCH

SQUELCH_INDICATOR

3.3V

7.8Vsw

7.8V

Q16

2N7002

PA_PTT

Q15

2N7002

C20

1uF/16V

7.8Vsw

Q17

2N7002

R55

R23

IGN_SW

7.8Vsw

7.8V

3.3V

IGN_SW

EMERGENCY_SWITCH

VBAT

7.8V

3.3V

7.8V

Q21

IRLML6302

Q20

2N7002

ON/OFF

R62

10K

R58 0OHM

R59 DNP

47K

Q19

DTA144EK

Q18

2N7002

7.8Vsw

R10

100K

R11

100K

R61

10k

TP21

BIAS

SPEAKER

610217

R44

100k

7.8V

FD1FD2FD3

A A

B B

C C

D D

EXTPWR

4.5VSW

BATTSW

3V3LOGIC

7.5VT

3V3LOGIC

7.5VT

3V3LOGIC

BATTSW 3V3LOGIC

3V3LOGIC

EXTMICB/KEY 5

EXTSPKR+/KLD 4,5

EXTSPKR- 4

232CLK_SC 5

232RXD_SC 5

PCRXD_SC 5

EXTPWR_SC 6

EXTMIC/WE 5

WRUMON 2

EXTPTT/KID 5

232TXD_SC 5

232DTR_SC 5

232RTS_SC 5

PCTXD_SC 5

PROGDATA 2,9,11

SYNTHENA 2,11

SRENA 2,11

12DACENA 3,9

8DACENA 2,9

DACADCCLK 3,5

MULTCLOCK 5

PATMON 2

RSSIMON 2,3

IFOUT 3,10

SYNTHOOL 2

/BATTOFF 5

CTX 5

DTXD 2

TDO 5

/WR 2,3,5

/RESET_JTAG 2,3,7

/WP 2

/STBY 2,3,5

DRXD 2

TCK 3,5

TDI 3

TMSDSP 3,5

/TRST 3

/DE 3

TMSFPGA 5

/RADON 6,7

SPKR+ 4

SPKR- 4

LEDGREENN 5

BL_KNOB_N 7

AUX2 7

AUX1 7

PTTSW 7

AUX3 7

VOL1 7

VOL3 7

VOL4 7

EMERGSW 7

TOG1 7

SECSW 7

TOG2 7

CHN1 7

CHN2 7

CHN3 7

CHN4 7

LEDREDN 5

BATTSENSE8

7.5VA8

7.5VT6,8

EEPWP9

PATEMP12

RSSI10

SYNTHLOCK11

IFOUT3,10

BATTCTRL8TXCTRL820VCLK11

PROGCLK2,9,11PROGDATA2,9,11 SYNTHENA2,11

SRENA2,11

8DACENA2,9

4.5VSW6,8

12DACENA3,9

12DACCLK912DACDATA3,9

232CTS_SC 5

/RADOFF_SC 6

SQL_SC 5

VOL2 7

INTMIC 4

GND_SIGNAL2,3,4,5,6,7,8,9,10,11,12

PROGCLK 2,9,11

BATTBUS 2

KOUT3 7

KOUT2 7

KOUT1 7

KIN1 7

KIN6 7

KIN3 7

KIN4 7

BL_KP_N 7

KIN5 7

KIN2 7

MTXD 5,7

/LCD_CS 5

/XRST 2,3,7

LCDA0 5

MCLK 5,7

BL_LCD_N 7

12DACDATA 3,9

RADONSW6

APPROVED

REVISIONS

ZONE REV DESCRIPTION DATE

PREPRODUCTION RELEASE

FILENAME

SOFTWARE VERSION

REV STATUS

OF SHEETS

REVISION

SHEETS

123456

Orcad Capture 7.00

07160101.DSN

NOTES: UNLESS OTHERWISE SPECIFIED.

1. INTERPRET DRAWING PER MIL-STD-100.

2. ALL RESISTANCE VALUES ARE IN OHMS,

3. CAPACITANCE VALUES ARE IN MICROFARADS,

4. LAST REF DES USED:

5. REF DES NOT USED:

SCALE

REV

SHEET

SIZE CAGE CODE DWG NO

NONE

DATE

23386

TITLE

CONTRACT NO.

UNLESS OTHERWISE SPECIFIED

DIMENSIONS ARE IN INCHES

TOLERANCES ARE:

FRACTIONS DECIMALS ANGLES

DO NOT SCALE DRAWING

TREATMENT

FINISH

SIMILAR TO

PART

DASH

NO.

NEXT ASSY USED ON

APPLICATION

CHECKED

MFG/TEST ENG

TECH DIR

QA APPROVALS

DSGNR

ADDITIONAL APPROVALS DATE

MECH ENG.

ELEC ENG.

DRAWN

THALES COMMUNICATIONS, INC.

Thursday, November 15, 2001 1 12

ROCKVILLE, MARYLAND

4200716

CCA CONTROL/TRANSCEIVER

SCHEMATIC DIAGRAM,

07/20/00E. HOOKER

.XX +/-

.XXX +/-

+/- +/-

DATRON4101421

THALES COMMUNICATIONS, INC.

This information represents intellectual property which

shall not be disclosed or released, except to comply with

contractural requirements. This information is provided

on a limited basis and does not include any rights to

manufacture, or have manufactured, any equipment

depicted therein.

JTAG/DEBUG

INTERFACE

CONTROL SIDEXCVR SIDE

B1,C550,D69,FL6,J5,L80,P2,Q71,R580,RT1,

T2,TP24,U77,Y1

C20,C24,C32,C33,C35-C37,C39-C42,C44-C52,

C54,C55,C58,C60,C62-C73,C76,C79,C80,C85,

C89-C91,C93,C99,C119,C122,C147,C153,C189,C194,C197,

C198,C204,C205,C207,C208,C210-C213,C217-C221,

C232,C234,C238,C239,C243,C250-C255,C258-C266,

C272-C274,C277,C278,C280-C283,C291,C296-C300,

C313-C317,C320-C327,C329,C330,C333,C391,C394-C398,

C402-C404,C530,C533,C548,D5,D6,D22,D29-D34,D51,

J1,J4,L23,L26,L27,L29,L32-L34,L36,L54,L57-L59,L67,P1,

Q3-Q6,Q8,Q9,Q20,Q28-Q30,Q37-Q45,Q56,R13-R30,R32,

U5-U10,U18,U22,U23,U25,U26,U30,U34,U38-U41,

R90,R93,R108,R158,R161,R163-R168,R170,R174,

R34-R43,R45,R46,R50,R53,R54,R56,R58-R63,R88,

R399,R402-R405,R407,R425,R438,R441-R443,R508,

R176,R184,R188-R190,R192,R194,R195,R197-R202,

R267-R271,R274,R275,R277,R278,R285,R286,R289,

R205,R207,R209-R211,R216,R221,R223,R226,R228,

U61,U66,U67,U72

R509,R519,R520,R532,TP4,TP15,TP16,TP22,TP23,U2,

R301-R305,R307-R314,R317,R318,R379,R383,R397,

R231-R235,R239,R242-R249,R260,R261,R265,

02 BOARD SPIN 2 UPDATED 10/10/01 B.MAAT

R368

10K

C372

100 pF

R354

100 1% R396

2.21K 1%

C405

100 pF

R356

100 1%

R384

10 1%

C408

0.01 uF

10%

20 POS

R358

100 1%

R367

10K

C401

100 pF

R360

100 1%

R388

10 1%

R361

100 1%

R401

100K

R362

100 1%

R398

10 1%

R363

100 1%

R366

10K

R359

100 1%

R365

10K

C407

0.01 uF

10%

R351

10K 1%

R364

10K

C399

0.01 uF

10%

R350

10K 1%

R390

10 1%

C374

47 pF

R352

10K 1%

R386

10 1%

C356

47 pF

C406

100 pF

R369

10K

C351

100 pF

R375

2.21K 1%

R406

47.5 1%

C352

100 pF

R380

1K 1%

R395

2.21K

R357

1K 1%

C353

100 pF

C350

100 pF

R327

1K 1%

R381

100 1%

R329

1K 1% R331

1K 1%

R333

1K 1%

R387

10K 1%

FL5

BEAD

R335

1K 1%

D36

BAR43S

1 2

R337

1K 1%

R393

100 1%

R339

1K 1%

C393

0.01 uF

10%

R385

100 1%

FL6

BEAD

R341

1K 1%

C400

0.01 uF

10%

R353

1K 1%

R343

1K 1%

C409

0.01 uF

10%

R355

1K 1%

R344

1K 1%

C392

0.01 uF

10%

R349

100

D37

BAR43S

1 2

C346

100 pF

R324

1K 1%

80 POS

61619-80

10 10

62 62

63 63

64 64

65 65

66 66

67 67

68 68

69 69

70 70

71 71

72 72

73 73

74 74

75 75

76 76

77 77

78 78

79 79

80 80

11 11

12 12

13 13

14 14

15 15

16 16

17 17

18 18

19 19

20 20

21 21

22 22

23 23

24 24

25 25

26 26

27 27

28 28

29 29

30 30

31 31

32 32

33 33

34 34

35 35

36 36

37 37

38 38

39 39

40 40

41 41

42 42

43 43

44 44

45 45

46 46

47 47

48 48

49 49

50 50

51 51

52 52

53 53

54 54

55 55

56 56

57 57

58 58

59 59

60 60

61 61

R389

100 1%

C347

100 pF

R325

1K 1%

R391

100 1%

C345

100 pF

R345

1K 1%

R347

1K 1%

C390

100 pF

D38

CMDSH2-3

2 1

R346

1K 1%

C342

0.01 uF

10%

R348

1K 1%

C343

0.01 uF

10%

R326

1K 1%

D39

BAR43S

1 2

R374

100K

C381

0.01 uF

10%

R328

1K 1%

Q49

BSS123

3 2

R376

100 1%

C364

0.01 uF

10%

R330

1K 1%

C348

0.01 uF

10%

C363

0.01 uF

10%

C349

0.01 uF

10%

R332

1K 1%

C380

0.01 uF

10%

R334

1K 1%

C344

0.01 uF

10%

C369

47 pF

R336

1K 1%

C376

100 pF

C383

0.01 uF

10%

R338

1K 1%

C358

100 pF

C366

0.01 uF

10%

R340

1K 1%

C377

100 pF

C382

0.01 uF

10%

R342

1K 1%

C359

100 pF

C365

0.01 uF

10%

R394

10 1%

C378

100 pF

C385

0.01 uF

10%

R378

10 1%

C360

100 pF

C368

0.01 uF

10%

R377

1K 1%

C379

100 pF

C384

0.01 uF

10%

R400

56.2

C361

100 pF

C367

0.01 uF

10%

R382

1K 1%

C389

0.01 uF

10%

C388

0.01 uF

10%

R372

10 1%

C373

0.01 uF

10%

C371

0.01 uF

10%

R371

10K 1%

C355

100 pF

C387

0.01 uF

10%

R373

100 1%

C354

100 pF

C370

0.01 uF

10%

R392

10 1%

C375

100 pF

C386

47 pF

R370

C357

0.01 uF

10%

C362

0.01 uF

10%

A A

B B

C C

D D

XTALVCC

XTALCLK DVRINCLK

CLKDVRVCC

RSTVCC

FLASHVCC

FLASHVPP

DVROUTCLK

TCXOCTRL

RAMVCC

DB10

DB7

DB0

DB3

DB10

AB1

DB13

AB8

AB7 DB3

AB20

DB4

AB0

/RES

DB15

AB15

AB6 DB2

AB18

DB1

DB0

/RESO

BATTMON

AB14

AB18

DB4

AB2

DB1

AB19

DB8

AB16

AB17

DB15

AB5

DB7

AB2

AB1

AB10

AB3

AB9

AB1

AB9

DB15

AB14

AB15

DB14

AB10

DB8

AB11

AB16

AB12

AB0

DB6

AB17

DB12

AB13

AB2

AB12

AB13

AB5

AB19

AB11

DB11

AB12

AB3

DB8

DB14

DB9

AB14

AB11

AB8

AB20

DB13

AB4

/RES DB2

AB15

AB7

AB6

DB12

AB9

AB6

DB5 DB10

AB8

/RESO

AB16

DB13

AB10

AB4

DB11

DB9

DB14

AB7

AB3

DB5

AB5

DB12

DB11

DB9

AB4

DB6

AB13

MPUCLK

3V3LOGIC

3V3CONT

H8VCC

3V3LOGIC

H8VCC

3V3LOGIC

/STBY1,3,5

SYNTHOOL1

DRXD1

/WP1

DTXD1

/DSPO_CS3

SYNTHENA11

PROGDATA9,11

/BREQ 3

/BACK 3

DSPWD3

/RES 5

DB[0..15] 3

/RD 3

/WR 1,3,5

/RAM_CS 3

/FLASH_CS 3

LBI 6

RSSIMON 1,3

8DACENA9

WRUMON 1

KEYLOAD5

AB[0..20] 3,5

DATIN_H8 5

/MINT 7

CONFDONE5

ALM 4

/LBOUT3,6

SOCLK 5

TXDO 5

232RTS_H8 5

/EXTPTT 5,6

/HINT 3

/XRST 1,3,7

/FPGA_CS 5

DATOUT_H8 5

PATMON 1

RXDO 5

GND_SIGNAL1,3,4,5,6,7,8,9,10,11,12

SRENA11

VPPCTRL3

BATTBUS1

/DINT3

PROGCLK9,11

/PWROFF6

FPGACLK 5

DSPCLK 3

Scale

Rev

Sheet of

Size

CAGE Code Dwg No.

None

23386

Drawn

Thales Communications, Inc.

Rockville, Maryland

Thursday, November 15, 2001 2 12

024200716

E. HOOKER

ALARM INPUT?

Control MPU

U64

IS62LV12816LL-70BI

365766

A10

A11

A12

A13

A14

A15

A16

IO0 B6

IO1 C5

IO2 C6

IO3 D5

IO4 E5

IO5 F5

IO6 F6

IO7 G6

GND

UB#

CE#

OE#

WE#

VCC D6

LB#

NC A6

IO8 B1

IO9 C1

IO10 C2

IO11 D2

IO12 E2

IO13 F2

IO14 F1

IO15 G1

NC D3

VCC E1

NC E3

GND

NC G2

NC H1

NC H6

R514

150K

R505

R506

10K

C482

0.1 uF

10%

C485

0.01 uF

10%

PORT A

PORT B

PORT 9

PORT 8

PORT 7

U63

HD6433044SS00XI

365582

VCC 68

MD2

MD1

MD0

EXTAL

XTAL

STBY

RES

VPP* /RESO

NMI

100

AVSS

VSS

018

119

220

321

423

524

625

726

053

154

255

356

058

159

260

369

470

571

672

VCC 35

VCC 1

AVCC 76

VREF 77

734

633

532

431

330

128

229

027

752

651

550

449

348

247

146

045

743

642

541

440

339

238

137

036

U68

12.288 MHz

O.P 3

VCC

VCONT

GND

Q66

2N7002

U60

MAX825TEUK

RESET 3

RESET 1

GND

VCC

R537

100

C507

100 pF

R511

150K

U62

RC28F160C3BA90

365764

A10

A11

A12

A13

A14

A15

A16

A17

A18

DQ0 F2

DQ1 E2

DQ2 G3

DQ3 E4

DQ4 G4

DQ5 F5

DQ6 E6

DQ7 H6

DQ8 E1

DQ9 E3

DQ10 F3

DQ11 F4

DQ12 E5

DQ13 G5

DQ14 F6

DQ15 G6

GND

OE#

H2 CE#

F1 WP#

C3 RP#

B4 WE#

VPP A4

VCCQ H3

A19

VCCQ H7

VSSQ

H5 VSSQ

VCC H4

VCC A5

R536

4.75K

R517

150K

R518

C487

0.01 uF

10%

C484

0.1 uF

10%

C490

100 pF

C497

0.1 uF

10%

Q67

2N7002

C486

1000 pF

L77

BEAD

C483

0.01 uF

10%

C496

2.2 uF

10%

10V

R513

221K

R516

182K

R507

R567

82.5

R515

82.5

R568

82.5

R512

10K

C488

12 pF

R563

10K

R579

10K

R564

10K

R534

100

C489

2.2 uF

10%

10V

R580

10K

R530

100

C502

0.01 uF

10%

R321

10K

R535

100

R323

10K

C504

100 pF

L76

1.2 uH

R533

4.75K

C503

0.01 uF

10%

R572

10K

C506

0.01 uF

10%

R529

100

R528

100 1%

R531

100K

C505

0.01 uF

10%

C538

0.1 uF

10%

R522

100K

R523

10K

1% R525

100K

C491

0.1 uF

10%

U71

NC7SZ14

365647

SOT23/5P

GND

VCC 5

C500

0.1 uF

10%

C492

0.1 uF

10%

R521

100 1%

C493

0.1 uF

10%

L78

BEAD

U69

NC7SZ126

SC70-5

365773

C499

2.2 uF

10%

10V

C498

0.01 uF

10%

C494

0.1 uF

10%

Q65

BSS84TA

C537

0.1 uF

10%

R524

100K

R510

C501

0.01 uF

10%

L75

BEAD

U70

NC7SZ126

SC70-5

365773

R526

100

R527

100K

C495

A A

B B

C C

D D

455IFCOUT

ADCDIN

ADCDOUT

AB10

AB3

DB13

AB18

DB15

AB2

AB0 DB9

DB6

AB17

AB16

DB13

AB11

AB9

AB6

AB2

DB12

DB0

DB15

DB14

AB1

AB19

DB8

DB14

DB11

DB5

AB8

DB9

AB7

AB5

AB4

DB10

DB8

AB0

DB12

DB10

DB3

AB12

AB1

DB11

DB7

DB4

DB2

AB15

AB13

DB1

AB14

ADCVCC

ADCREFVCC

ADCDOUT

ADCDIN

DSPVCC

3V3LOGIC

3V3ANALOG

3V3LOGIC

DACADCCLK1,5

IFOUT10

/RD2

/WR1,2,5

/BREQ2

/BACK2

/STBY1,2,5

DSPCLK2

/LBOUT2,6

DB[0..15]2

AB[0..20]2,5

/FLASH_CS2

/RAM_CS2

RSSIMON1,2

12DACDATA 9

/DSPO_CS 2

CODECFSK 4

232RXD_DSP 5

/RESET_JTAG1,2,7

/IRQD 5

TDI 1

/HINT 2

232TXD_DSP 5

CODECDOUT 4

CODECCLK 4

DACADCCLK 1,5

232CTS/DIGSQ_DSP 5

/DINT 2

VPPCTRL 2

TCK 1,5

/DE 1

CODECDIN 4

DSPWD 2

/CODECEARMUTE 4

232RTS/EORS_DSP 5

232DTR/SYNC_DSP 5

/TRST 1

12DACENA 9

/WR 1,2,5

TDODSP 5

/CODECMICMUTE 4

/XRST1,2,7

/RD 2

232CLK_DSP 5

TMSDSP 1,5

GND_SIGNAL1,2,4,5,6,7,8,9,10,11,12

Scale

Rev

Sheet of

Size

CAGE Code Dwg No.

None

23386

Drawn

Thales Communications, Inc.

Rockville, Maryland

Thursday, November 15, 2001 3 12

024200716

E. HOOKER

DECOUPLING CAPS MUST BE CLOSE TO DSP VCC PINS

1.536 MHz

2.048 MHz

Control DSP

TEST PAD

R541

100

C523

.033 uF

R542

47.5

C543

0.047 uF

10%

R544

100

C534

0.01 uF

10%

R539

10K

R545

100

R549

100K

R555

100K

R548

100

C529

0.1 uF

10%

R551

100

R553

100

R556

100

C521

0.01 uF

10%

C520

0.1 uF

10%

C519

0.01 uF

10%

C517

0.01 uF

10%

C518

0.1 uF

10%

U74

MAX1246

365695

QSOP16/025/210

CH0

CH1

CH2

CH3

COM

SHDN

7VREF 8

REFADJ

DIN

SCLK

Vdd 1

AGND

DGND

DOUT 12

SSTRB 13

CS 15

C516

0.1 uF

10%

C515

0.01 uF

10%

C541

12 pF

R547

C514

0.1 uF

10%

C528

4.7 uF

10%

10V

C513

0.01 uF

10%

C512

0.1 uF

10%

C511

0.01 uF

10%

C510

0.1 uF

10%

C509

0.01 uF

10%

C522

2.2 uF

10%

10V

C508

0.1 uF

10%

PAD2

L79

BEAD

R540

10K

R546

100

R552

10K

R569

NU R550

C525

100 pF

C532

C526

100 pF

C527

100 pF

C531

100 pF

C535

100 pF

CLOCK

PLL

PORT A

TIMER

PORT E

PORT D

PORT C

PORT B

U65

XC56309GC100A

365770

GND

D10

GND

D11

EXTAL

XTAL

CLKOUT

PCAP

GND

E10

GND

E11

GND

VCCQL N9

VCCQH M7

VCCP M6

VCCH M4

VCCA L12

VCCA K12

VCCS K1

VCCA H12

VCCQL H2

VCCQH H1

VCCQL G13

VCCQH F12

VCCS E2

VCCD D14

VCCD C11

VCCD C9

VCCQL C7

VCCD A7

PINIT/NMI

N14

M13

M14

L13

L14

K13

K14

J13

J12

J14

A10

H13

A11

H14

A12

G14

A13

G12

A14

F13

A15

F14

A16

E13

A17

E12

E14

D12

D13

C13

C14

B13

C12

A13

B12

A12

D10

B11

D11

A11

D12

C10

D13

B10

D14

A10

D15

D16

D17

D18

D19

D20

D21

D22

D23

AAO

N13

AA1

P12

AA2

AA3

M12

M11

P10

N11

P13

P11

CAS

BCLK

N10

BCLK

M10

GND

MODAIRQA C4

MODBIRQB A5

MODCIRQC C5

MODDIRQD B5

RESET N5

H0 M5

H1 P4

H2 N4

H3 P3

H4 N3

H5 P2

H6 N1

H7 N2

HA0 M3

HA1 M1

HA2 M2

HCS/HCS L1

HRW J2

HDS/HDS J3

HREQ/HREQ K2

HACK/HACK J1

SC00 F3

SC01 D2

SC02 C1

SCK0 H3

SRD0 E3

STD0 E1

SC10 F2

SC11 A2

SC12 B2

SCK1 G1

SRD1 B1

STD1 C2

RXD F1

TXD G3

SCLK G2

TI00 L3

TI01 L2

TI02 K3

TCK C3

TDI B3

TDO A4

TMS A3

TRST B4

DE D3

NC A1

NC A14

GND

NC B14

GND

F10

GND

F11

GND

G10

GND

G11

GND

H10

GND

H11

GND

J10

GND

J11

GND K4

GND K5

GND K6

GND K7

GND K8

GND K9

GND K10

GND K11

GND L4

GND L5

GND L6

GND L7

GND L8

GND L9

GND L10

GND L11

GNDP N6

VCCC N12

NC P1

GNDP1 P6

VCCC P9

NC P14

U73

SOT23/3P

R543

10K

R570

R538

33.2K

R554

10K

C524

100 pF

A A

B B

C C

D D

ACODVCC CODECVCC

5VMICBIAS

3V3ANALOG

3V3LOGIC

5VAUDIO 5VAUDIO

5VLOGIC

SPKRON5

ALM2

/CODECMICMUTE3

EXTMIC5

INTMIC1

EXTSPKRON5

CODECCLK 3

CODECDOUT 3

CODECDIN 3

SPKR+ 1

SPKR- 1

EXTSPKR- 1

EXTSPKR+/KLD 1,5

CODECFSK 3

GND_SIGNAL1,2,3,5,6,7,8,9,10,11,12

/CODECEARMUTE3

Scale

Rev

Sheet of

Size

CAGE Code Dwg No.

None

23386

Drawn

Thales Communications, Inc.

Rockville, Maryland

Thursday, November 15, 2001 4 12

024200716

E. HOOKER

Control Audio

U59

LM4872

+IN

7-IN

SDOWN

BYPASS

GND

V01 8

V02 4

VDD 6

R502

150K

Q64

2N7002

R488

100K

R503

100K

R491

221K

C475

0.033 uF

10%

R501

15K

C469

0.047 uF

10%

R498

100K

R500

100K

R496

15K

C471

2.2 uF

10V

C480

0.033 uF

10%

C470

0.1 uF

10%

C478

470 pF

10%

C467

0.1 uF

10%

C479

0.1 uF

10%

L74

BEAD

R485

R560

475

R562

475

R561

33.2K

R559

33.2K

R492

150K

R495

100K

D68

BAR43C

R489

562

D67

BAR43C

R493

150K

R487

4.75K

C476

0.1 uF

10%

R499

10K

R494

150K

D69

BAR43S

1 2

R486

5.62K

Q63

2N7002

R497

150K

C468

1.0 uF

20%

C463

3900 pF

R484

100

1% C465

0.1 uF

10%

C466

15 uF

10%

10V

C473

470 pF

10%

C474

0.1 uF

10%

C477

1 uF

10%

C549

470 pF

10%

U57

LMC7101A

365438

5 2

C481

1 uF

10%

R483

R490

15K

C464

0.1 uF

10%

U56

TLV320

MICGS

MICIN

MICBIAS

MICMUTE

EARB

EARGS

EARA

EARMUTE

PDN

VMID

AGND

DGND

DCLKR 14

CLK 19

DOUT 21

FSX 20

FSR 16

DIN 15

TSX/DCLKX 22

LINSEL 26

AVCC 4

DVCC 9

R504

150K

C472

1.0 uF

20%

U58

LM4872

+IN

7-IN

SDOWN

BYPASS

GND

V01 8

V02 4

VDD 6

A A

B B

C C

D D

FPGAVCC

KVLSEL

AVR_CLK

232DTRIN

232TXDIN

232RTSIN

KEYOUT

KEYIN

KEYID

DAC_ADC_CLK

232CTSOUT

232RXDOUT

232CLKOUT

232DTRIN

232RTSIN

232CLKOUT

232CTSOUT

232VCC

KEYID

KVLSEL

KEYIN

KEYOUT

AB16

AB17

AB18

AB19

/WE

/WE AVR_CLK

DAC_ADC_CLK

LEDGREEN

PSU_CLK

/232SHDN

LEDRED

232RXDOUT

232TXDIN

AB20

3V3LOGIC

5VLOGIC

5VLOGIC 5VLOGIC 5VLOGIC

3V3LOGIC 3V3LOGIC

5VLOGIC

5VLOGIC 3V3LOGIC

5VLOGIC

RXDO 2

232RTS/EORS_DSP 3

/IRQD 3

SPKRON 4

232RTS_H8 2

232DTR/SYNC_DSP 3

DACADCCLK 1,3

232DTR_SC 1

232TXD_SC 1

232RTS_SC 1

PCTXD_SC 1

232CTS_SC 1

232CLK_SC 1

232RXD_SC 1

PCRXD_SC 1DATOUT_H82

DATIN_H82

232CLK_DSP 3

LEDREDN 1

LEDGREENN 1

EXTMIC/WE1

EXTPTT/KID1

EXTSPKR+/KLD1,4

EXTMIC 4

/EXTPTT 2,6

KEYLOAD 2

EXTMICB/KEY1

MULTCLOCK 1

MRXD 7

AVRCLK 7

232CTS/DIGSQ_DSP 3

GND_SIGNAL1,2,3,4,6,7,8,9,10,11,12

/RES2

SOCLK2TXDO2

CONFDONE2

FPGACLK2

232RXD_DSP 3

EXTSPKRON4

AB[0..20]2,3

/WR1,2,3

/FPGA_CS2

/LCD_CS1

MCLK1,7

MTXD1,7

SQL_SC1

/KPD_CS7

PWRHOLD6

CTX1

/BATTOFF1

LCDA01

TCK1,3

TDODSP3

TMSFPGA1

TMSDSP1,3

TDO1

PSUCLK6

/STBY1,2,3

232TXD_DSP3

Scale

Rev

Sheet of

Size

CAGE Code Dwg No.

None

23386

Drawn

Thales Communications, Inc.

Rockville, Maryland

Thursday, November 15, 2001 5 12

024200716

E. HOOKER

Control FPGA

R449

C462

0.1 uF

10%

R447

U54

MAX213EEAI

V+ 13

GND

T4I

T2I

R4O

R1O

R2O

T1I

R3O

C1+

T3I

R5O

C2-

16 C2+

15 C1-

V- 17

T10 2

T20 3

T30 1

T40 28

R1I 9

R2I 4

R3I 27

R4I 23

R5I 18

SHDN 25

VCC 11

R466

D52

CMPSH-3A

R451

100K

R469

C454

100 pF

Q60

2N7002

R471

D53

CMDSH2-3

2 1

R468

R464

10K

L73

BEAD

C457

0.1 uF

10%

Q62

2N7002 1

R480

4.75K

D54

CMDSH2-3

2 1

C461

100 pF

R565

10K

D55

CMDSH2-3

2 1

D60

CMDSH2-3

R475

10K

D56

CMDSH2-3

2 1

R477

100K

D57

CMDSH2-3

2 1

R476

10K

R478

10K

R481

10K

R482

150K

D65

CMDSH2-3

R463

10K

R462

10K

C456

100 pF

R461

10K

D66

BAR43S

1 2

R460

100K

D62

BAR43S

1 2

3D63

BAR43S

1 2

3D64

BAR43S

1 2

D59

CMDSH2-3

C542

12 pF

R448

10K

R467

100K

U55

MAX4053

NCC 12

NOC 13

NCB 2

NOB 1

NCA 5

NOA 3

INH

ADDC

ADDB

ADDA

COMC

COMB

COMA

V+ 16

GND

V-

R446

R472

C455

15 uF

10%

10V

C448

0.1 uF

10%

Q61

2N7002

R459

22.1K

D61

CMDSH2-3

R452

47.5

C449

0.1 uF

10%

C447

2.2 uF

10%

10V

C450

0.1 uF

10%

R470

10K

C451

0.1 uF

10%

C460

0.1 uF

10%

R473

100K

R465

10K

C452

0.1 uF

10%

R455

150K

R457

R479

100K

U53

EPF6016AFI100-3

365765

nCE

INIT_DONE

E10

MSEL

nSTATUS

nCONFIG

DCLK

CONFIG_DONE

nCEO

nWS

nRS

nCS

RDYnBUSY

D10

CLKUSR

C10

DATA

TDI

TCK

G3 TMS

G2 TDO

K10

F10

DEV_CLRn

DEV_OE

GND D4

VCC D7

VCC E4

VCC E5

VCC F6

VCC F7

VCC G4

GND E6

GND E7

GND F4

GND G7

GND F5

I/O

A10

I/O

B10

I/O

I/O E3

I/O E8

I/O E9

I/O F1

I/O F2

I/O F3

I/O F8

I/O G1

I/O G6

I/O G8

I/O G9

I/O G10

I/O H1

I/O H3

I/O H4

I/O H5

I/O H6

I/O H7

I/O H8

I/O H9

I/O H10

I/O J1

I/O J2

I/O J3

I/O J4

I/O J5

I/O J6

I/O J7

I/O J8

I/O J9

I/O J10

I/O K1

I/O K2

I/O K3

I/O K4

I/O K6

I/O K7

I/O K8

C453

0.1 uF

10%

R456

150K

C458

0.1 uF

10%

R474

100

D58

CMDSH2-3

Q59

2N7002

C459

0.1 uF

10%

R453

56.2

R458

100

R454

56.2

R450

A A

B B

C C

D D

P64

P61

P62

P58

P59

P63

P56 P57

P60

3V3LOGIC

5VLOGIC

5VMICBIAS

BATTSW

3V3LOGIC

4.5VSW

7.5VT

3V3CONT

5VAUDIO

3V3ANALOG

BATTSW

7.5VT

4.5VSW

7.5VT

3V3CONT

EXTPWR_SC1

/LBOUT 2,3

/EXTPTT2,5

LBI 2

PSUCLK5

7.5VT1,8

GND_SIGNAL1,2,3,4,5,7,8,9,10,11,12

4.5VSW8

/PWROFF2

/RADON1,7

PWRHOLD5

RADONSW1

/RADOFF_SC1

Scale

Rev

Sheet of

Size

CAGE Code Dwg No.

None

23386

Drawn

Thales Communications, Inc.

Rockville, Maryland

Thursday, November 15, 2001 6 12

024200716

E. HOOKER

Control Power

D50

BZX84C8V2

33606

1 3

Si4953DY

U47B

R428

562K

R435

182K

R436

10K

R578

150K

C436

0.01 uF

10%

U52

LP2980A-5.0

VIN

GND

VOUT 5

NC 4

C437

47 pF

R424

2.00

C435

6800 pF

10%

C433

680 pF

U46

MIC5205

VIN

GND

VOUT 5

BYP 4

R573

150K

R437

5.11K

C425

1.0 uF

20%

35V

C423

0.1 uF

10%

C424

0.01 uF

10%

C432

100 pF

C422

0.1 uF

10%

D49

ZHCS1000

3 1

R445

475

C421

4.7 uF

10%

10V

R434

100K

C446

0.1 uF

10%

R431

274K

C445

4.7 uF

10%

10V

U51

LT1118

GND

VOUT 1

TAB-GND

VIN

Q57

2N7002

R440

Q58

2N7002

U49A

Si4953DY

U48

LTC1434IGN

365421

PWRVIN

SVIN

LBI

PLLIN

PLL LPF

COSC

ITH

VPROG

RUN/SS

PGND

SGND

BSW 4

SSW 2

VOSENSE 12

NC 1

NC 3

POR 14

NC 6

NC 8

LBO 9

R444

150K

C444

0.1 uF

10%

U50

LP2980A-5.0

VIN

GND

VOUT 5

NC 4

C442

0.1 uF

10%

Q68

2N7002

C428

0.1 uF

10%

C443

4.7 uF

10%

10V

C440

0.1 uF

10%

C434

0.1 uF

10%

C441

15 uF

10%

10V

C439

4.7 uF

10%

10V

R427

150K

C429

0.1 uF

10%

R574

150K

R426

562K

C430

100 uF

20%

R575

150K

R577

150K

C414

0.1 uF

10%

C431

4.7 uF

10%

10V

R576

150K

R439

150K

L70

10 uH

C416

0.1 uF

10%

D48

CMSH2-40

2 1

Q71

2N7002

R429

10K

C415

4.7 uF

10%

10V

U44

LP2980A-3.3

VIN

GND

VOUT 5

NC 4

R421

100

R432

10K

C417

0.1 uF

10%

Q69

2N7002

C438

0.1 uF

10%

R433

8.25K

C420

0.1 uF

10%

C418

4.7 uF

10%

10V

Q55

MMBT3906

C419

100 uF

20%

U47A

Si4953DY

D47

ZHCS1000

R422

47.5

Si4953DY

U49B

L71

33 uH

20%

Q70

2N7002

R423

L72

1.2 uH

RT1

miniSMD050-2 R430

150K

D46

CMDSH2-3

2 1

U45

LP2980A-3.6

VIN

GND

VOUT 5

NC 4

C426

0.1 uF

10%

C427

4.7 uF

10%

10V

A A

B B

C C

D D

ATFVCC

/BK_DIM

ATMELVCC

/BK_ON

3V3LOGIC

3V3LED

3V3LOGIC

VOL21

VOL31

VOL41

/RADON1,6

BL_LCD_N 1

BL_KP_N 1

BL_KNOB_N 1

/MINT 2

KIN51

KIN21

CHN41

AUX11

KOUT3 1

TOG11

CHN21

KIN31

AVRCLK5

/XRST1,2,3

KOUT2 1

TOG21

KIN41

MTXD1,5

MCLK1,5

/KPD_CS5

EMERGSW1

KIN61

CHN11

KIN11

SECSW1

AUX21

GND_SIGNAL1,2,3,4,5,6,8,9,10,11,12

MRXD 5

PTTSW1

KOUT1 1

CHN31

VOL11

AUX31

Scale

Rev

Sheet of

Size

CAGE Code Dwg No.

None

23386

Drawn

Thales Communications, Inc.

Rockville, Maryland

Thursday, November 15, 2001 7 12

024200716

E. HOOKER

Added GND to ICP.

Control Keypad

R414

100

C410

0.01 uF

10%

R410

D40

CMDSH2-3

L69

BEAD

R411

R419

D42

CMDSH2-3

C411

0.01 uF

10%

D45

CMDSH2-3

Q54

2N7002

R417

100

R413

100K

1% Q52

MMBT3904

2 3

C412

0.01 uF

10%

R416

100K

D44

CMPSH-3A

Q53

MMBT3904

2 3

AT90S8515

U43

AT90S8515-4AC

PB0 40

PB1 41

PB2 42

PB3 43

PB4 44

PA0 37

PA1 36

PA2 35

PA3 34

PA4 33

PA5 32

PA6 31

PA7 30

PC0

PC1

PC2

PC3

PC4

PC5 23

PC6 24

PC7 25

PD1

PD2

PD3

PD4

PD5

PD6

PD7

PB5

PB6

PB7

NC 39

NC 28

RESET

PD0

XTAL1

XTAL2

GND

ALE 27

OC1B 26

ICP 29

VCC 38

Q50

BSS84TA

D41

CMDSH2-3

R420

47.5K

R415

100K

Q51

MMBT3904

2 3

R418

100

C413

0.1 uF

10%

R408

47.5K

D43

CMPSH-3A

R412

1.5K

R409

A A

B B

C C

D D

P54 P55

GND_SIGNAL 1,2,3,4,5,6,7,9,10,11,12

7.5VA_XCVR 11

PATEMP1,12

RSSI1,10

SYNTHLOCK1,11

TOPRF 12

SYNTHENA 2,11

SRENA 2,11

4.5VSW_XCVR 11,12

12DACENA 3,9

12DACCLK 1,9

12DACDATA 3,9

PROGCLK 2,9,11

PROGDATA 2,9,11

SIDERF 12

7.5VT1,6

GND_SIGNAL1,2,3,4,5,6,7,9,10,11,12

BATTSENSE1

PATEMP1,12

RSSI1,10

SYNTHLOCK1,11

BATTCTRL1

TXCTRL1

20VCLK1,11

PROGCLK2,9,11

PROGDATA2,9,11

SYNTHENA2,11

SRENA2,11

4.5VSW6

12DACENA3,9

12DACCLK1,9

12DACDATA3,9

8DACENA2,9

7.5VT_XCVR 12

20VCLK 1,11

EEPWP 1,9

8DACENA 2,9

EEPWP1,9

7.5VA1

Scale

Rev

Sheet of

Size

CAGE Code Dwg No.

None

23386

Drawn

Thales Communications, Inc.

Rockville, Maryland

Thursday, November 15, 2001 8 12

024200716

E. HOOKER

BATTCTRL TXCTRL

BATTERY+

BATTERY-

BATTSENSE

Transceiver Interface

PAD1

U36-2

Si4925DY

32675

3D5

PAD1

C311

0.1 uF

10%

R299

150K

R297

150K

R298

150K

R300

150K

C312

15 uF

20%

20V

OSMT

60165

Q47

2N7002LT1

SS-32550

OSMT

60165

Q48

2N7002LT1

SS-32550

C318

0.1 uF

10%

R306

C319

0.1 uF

10%

U36-1

Si4925DY

32675

C304

.22 uF

L66

1.2 uH

C305

.22 uF

A A

B B

C C

D D

PROGCLK

PROGDATA

PROGCLK

PROGDATA

+5VDIG

+2.5VREF

+5VDIG

7.5VA_XCVR

+3.3VRX

+5VDIG

+2.5VREF

3V3LOGIC

20V

+5VDIG11

GND_SIGNAL1,2,3,4,5,6,7,8,10,11,12

REFOSCMOD 11

IFAGC 10

7.5VA_XCVR8,11

+3.3VRX10,11

2ND_LO_TUNE 10

RXVTF 10

PWRSET 12

CTUNE 11

TXVCOMOD 11

12DACDATA3

12DACENA3

12DACCLK1

8DACENA2

PROGCLK2,11

PROGDATA2,11

EEPWP1

Scale

Rev

Sheet of

Size

CAGE Code Dwg No.

None

23386

Drawn

Thales Communications, Inc.

Rockville, Maryland

Thursday, November 15, 2001 9 12

024200716

E. HOOKER

8 BIT DAC

EEPROM

2.5 VDC

12 BIT DAC

Transceiver DACs

R175

130K

R180

100K

C275

0.1 uF

10%

R177

43.2K

R272

100K

R182

100K

U33

MAX534B

365590

OUTB 1

OUTA 2

OUTC 16

OUTD 15

VDD

AGND

DGND

REF

DOUT 8

DIN

UPO

PDE

CLR*

LDAC

CS*

SCLK

R291

100

R172

90.9K

R290

100

R252

100K

C545

.033 uF

C257

0.1 uF

10%

R254

100K

U76

LM7301

365661

OP 1

V-

-IP

+IP

V+ 5

R255

100K

C269

0.1 uF

10%

C271

0.1 uF

10%

C544

.033 uF

U31

MAX525B

365588

OUTA 3

FBA 2

OUTB

FBB

OUTC 17

FBC 16

OUTD 18

FBD 19

AGND 1

DGND 11

DOUT 12

UPO

REFAB

REFCD

CS*

DIN

SCLK

VDD

CL*

PDL*

R258

100K

C303

0.1 uF

10%

R259

100K

C117

0.1 uF

10%

R86

100K

C267

0.1 uF

10%

U15

24C64

365440

GND 4

SDA

SCL

VCC 8

R253

100K

C206

1.0 uF

20%

35V

C276

0.1 uF

10%

R186

47.5K

R273

100

R169

274K

U35

74HCT125

365078-125

4OE*

1OE* 1

1Y 3

2Y 6

4Y 11

3OE* 10

VCC

2OE* 4

GND

3Y 8

R287

R256

100K

C279

1000 pF

U32

AD1582C

SOT23/3P

365795

R257

100K

R262

100K

TP17

R263

100K

TP18

TP19

TP20

TP21

TP24

C268

2.2 uF

10%

10V

SS-25131

D25

BAR43S

SS-35620

C270

0.1 uF

10%

R266

100K

R264

100K

R179

23.7K

R181

R196

10K

R193

10K

U75

LM7301

365661

OP 1

V-

-IP

+IP

V+ 5

A A

B B

C C

D D

R3 R5 R8 R9

P11

R10 R11

R12

P10

R13

P12

+3.3VRX

RXVTF9

GND_SIGNAL1,2,3,4,5,6,7,8,9,11,12

RX_INPUT12

RSSI 1

IFOUT 3

2ND_LO_TUNE9

RXSINK12

IFAGC9

+3.3VRX 11

RXLO11

+3.3VRXEN11

Scale

Rev

Sheet of

Size

CAGE Code Dwg No.

None

23386

Drawn

Thales Communications, Inc.

Rockville, Maryland

Thursday, November 15, 2001 10 12

024200716

E. HOOKER

1T 4T

11T

136-174 MHZ

2 POLE BANDPASS FILTER

LOWPASS FILTER & IF NOTCH

MIXER

IF AMPLIFIER

1T 4T

11T

7T-AW

IF IC

2nd LO

181-219MHz

AMPLIFIER

2nd IF AMPLIFIER

1st

2 dB PAD

Transceiver Receiver

PLACE NEAR FL3-3

PLACE C230 NEAR PIN 16, C536 NEAR PIN 20

PLACE NEAR U28-9

(VMID)

L62

0.82 uH

R219

12.1K

C28

27 pF

C290

0.1 uF

10%

R229

2.21K

L19

15 nH

R225

681

L20

33 nH

0.1 uF

10%

L63

150 nH

10%

R217

12.1K

C30

18 pF

0.01 uF

10%

C289

91 pF

R238

1.5K

L21

39 nH

0.1 uF

10%

C293

12 pF

R218

2.67K

C31

10 pF

0.25pF

0.39 uH

L65

680 nH

10%

L64

1.0 uH

C75

5.6 pF

0.25pF

1000 pF

R282

68.1

R220

3.01K

L15

5T-AW

3400439-3

C87

1.8 pF

0.25pF

1.0 pF

0.1pF

R284

68.1

C57

1.8 pF

0.25pF

C27

0.1 uF

10%

0.1 uF

10%

R283

150

L12

680 nH

10%

L18

6.8 uH

1000 pF

C294

C241

0.01 uF

10%

C29

56 nH

C536

0.1 uF

10%

C227

56 pF

MMBR901

32099

2 3

2.7 pF

0.1pF

C222

0.1 uF

10%

2.67K

56 nH

C34

0.1 uF

10%

C223

18 pF

R10

3.01K

C11

5.6 pF

0.1pF

C292

4.7 uF

10%

10V

R212

18.2K

R11

332

56 nH

LP2980A-3.3

365460

VOUT 5

ON/OFF

VIN

GND 2

R213

1.3K

51.1

100 nH

47 nH

R204

51.1

C12

120 pF

C10

9.1 pF

0.1pF

L24

1.2 uH

10%

L17

82 nH

100 nH

C302

0.1 uF

10%

R31

200K

C23

150 pF

C13

120 pF

C19

2-10 pF

SS-28058

39 pF

R208

L10

330 nH

C14

18 pF

R251

51.1

C15

22 pF

C215

0.1 uF

10%

L11

1.2 uH

C56

10 pF

0.25pF

L22

150 nH

R276

51.1

C21

R571

49.9

R33

1.82K

L13

470 nH

10%

C547

FL1

45 MHz 4-POLE

1600471-1

1 4

C224

0.1 uF

10%

332

C230

0.1 uF

10%

C242

39 pF

R203

100

C237

8.2 pF

.1pF

44.545 MHz

1600407-1

4 1

C244

0.1 uF

10%

C229

4.7 uF

10%

10V

C26

0.01 uF

10%

EMRS-1A

84586

GND

IF 5

GND

C550

0.1 uF

10%

D26

SMV1236-011

29037

2 1

C214

0.1 uF

10%

U28

AD607ARS

365513

RFHI

RFLO

MXOP

VMID

IFOP 14

RSSI 12

LOIP 4

IFHI

IFLO

VPS1 20

VPS2 16

PRUP 3

COM1

COM2

GREF 7

DMIP 15

IOUT 18

FDIN 1

FLTR 19

QOUT 17

C248

0.1 uF

10%

MMBR941

32098

2 3

R250

1.5K

C246

0.1 uF

10%

C231

0.1 uF

10%

3400439-5

MMBD701

SS-36034

1 3

C256

0.1 uF

10%

C240

0.1 uF

10%

C284

91 pF

136-174MHz

1600462-1

2 5

1 3

C247

3.3 pF

0.25pF

MMBD701

SS-36034

FL3

455 kHz

37121

C285

2.2 pF

.25pF

45MHz

1600463-1

2 5

1 3

FL2

455 kHz

37107

1C236

R280

20K

7T-AW

3400439-5

U29

OPA343

365701

V+

V-

C228

0.01 uF

10%

R281

20K

R187

100K

R222

49.9

C225

0.1 uF

10%

C287

120 pF

100K

SMV1204-136

29050

R240

475

L61

390 nH

10%

L25

100 nH

R241

475

L60

1.5 uH

C61

120 pF

R316

C235

SMV1204-136

D27

2 1

C286

3.3 pF

0.25pF

SMV1204-136

D28

2 1

C338

0.1 uF

10%

R230

332

SMV1204-136

C337

0.1 uF

10%

R12

51.1

R215

C18

8.2 pF

0.1pF

R206

10K

2.67K

Q36

MMBR901

32099

2 3

R237

174

C59

100 pF

C22

0.1 uF

10%

C245

0.1 uF

10%

R236

1.3K

Q35

MMBR901

32099

2 3

3.01K

C233

0.1 uF

10%

U27

LMC7101A

365438

V+

V-

C249

0.1 uF

10%

C226

56 pF

C16

22 pF

L14

5T-AW

3400439-3

R279

100

R227

1.21K

TP1

C17

22 pF

FL4

45 MHz 2-POLE

1600479-1

1 4

R224

TP2

L16

1.8 uH

C288

15 pF

R214

TP3

C25

6.2 pF

0.25pF

A A

B B

C C

D D

P20

R14

P18

R17

R18

R16

P26

P24

P25

P14

P13

P22

P15

P35

P34

P32

P33

P30

P31

P28

P29

R15

R19

P16

P36

R20

P17

P21

P27

P23

+3.3VDIG

+3.3VRXS

+3.3VTXS

+3.3VA

+3.3VTXS

+3.3VA

+3.3VRXS

+3.3VTXS

4.5VSW_XCVR

+5VDIG

+3.3VDIG

7.5VA_XCVR

+5VDIG

+3.3VDIG

4.5VSW_XCVR

+3.3VRX

+5VDIG

7.5VA_XCVR

+3.3VA

+3.3VRX

+3.3VTXS

20V

+3.3VRXS

STD/SIDE 12

TX/RX 12

CTUNE9

REFOSCMOD9

SRENA2

+5VDIG 9

4.5VSW_XCVR8,12

+3.3VRX10

20VCLK1

PROGCLK2,9

SYNTHLOCK 1

+3.3VDIG12

RXLO 10

TXLO 12

GND_SIGNAL

1,2,3,4,5,6,7,8,

9,10,12

PROGDATA2,9

SYNTHENA2

TXVCOMOD9

7.5VA_XCVR8

+3.3VRXEN 10

Scale

Rev

Sheet of

Size

CAGE Code Dwg No.

None

23386

Drawn

Thales Communications, Inc.

Rockville, Maryland

Thursday, November 15, 2001 11 12

024200716

E. HOOKER

TX VCO

RX VCO

SYNTHESIZER

REF OSC

VOLTAGE

MULTIPLIER

BUFFER

AMPLIFIER

+3.5V

6.00VDC

Note: Use single

point ground here

RX BUFFER

AMPLIFIER

TX BUFFER

AMPLIFIER

Transceiver Synthesizer

KEEP VERY SHORT

C301

1000 pF

C159

1000 pF

D18

BBY40

SS-29029

1 3

R288

R102

D15

BBY31

SS-29031

1 3

C167

15 pF

R292

100

R135

C175

15 pF

R145

4.75K

L52

27 nH

2 1

C176

15 pF

U20

MIC5205

365499

VOUT 5

ON/OFF

VIN

BYP 4

GND

R130

2.21K

C154

1000 pF

L51

1.5 uH

10%

1 2

R295

86.6K

R149

332

C150

1000 pF

L50

68 nH

C121

1.0 uF

20%

35V

R296

332K

R124

47.5

C141

0.1 uF

10%

R322

10K

L47

1.5 uH

10%

C310

470 pF

10%

R146

C124

4.7 uF

10%

10V

C145

1000 pF

L43

82 nH

C200

0.1 uF

10% D35

BAR43S

R150

5.62K

C149

12 pF

L44

1.5 uH

10%

1 2

C151

0.1 uF

10%

C308

.033 uF

10%

R137

4.32K

L49

68 nH

C546

.033 uF

C188

1000 pF

C156

0.1 uF

10%

C309

.033 uF

10%

R136

182

C178

0.1 uF

10%

L56

68 nH

R159

121

R152

511

C168

1000 pF

C182

1000 pF

L48

56 nH

C341

100 pF

C184

1000 pF

R128

47.5

C185

15 pF

L55

1.5 uH

10%

1 2

C183

1000 pF

R141

16.2

C195

1000 pF

L53

3400439-1

1 2

R92

7.5K

C172

6800 pF

10%

22562-682

C307

.033 uF

10%

R142

16.2

C53

10 pF

C126

0.015 uF

10%

C177

0.068 uF

C173

2200 pF

10%

R131

16.2

R97

3.92K

U77

LM7301

365661

OP 1

V-

-IP

+IP

V+ 5

C161

0.022 uF

10%

R105

4.75K

R95

15K

C146

0.022 uF

10%

R293

100

R101

2.21K

R153

22.1

R109

332

C143

4.7 uF

10V

10%

U24

74HC595

365459-595

SER

SRCLK

SRCLR

RCLK

QA 15

QB 1

QC 2

QD 3

QE 4

QF 5

QG 6

QH 7

QH' 9

VCC 16

GND 8

R106

22.1

C140

1000 pF

R107

C123

4.7 uF

10%

10V

SS-25122-475-10

C160

1000 pF

R99

47.5

R183

C131

3300 pF

R104

4.32K

R116

10K

R110

5.62K

R143

51.1

C135

8.2 pF

.1pF

R129

R103

182

C165

10 pF

R96

4.32K

C539

R114

R100

47.5

C166

9.1 pF

.1pF

U19

SA7025DK

365423

CLK

DATA

STROBE

VSS 4

AUXIN 10

VSSA 12

RFIN

RFIN* 6

REFIN

VCCP

VDD 20

TEST 19

LOCK 18

RF 17

RN 16

VDDA 15

PHP 14

PHI 13

PHA 11

C136

6.8 pF

.1pF

C162

4.7 uF

10V

10%

R566

R94

182K

C169

27 pF

L46

100 nH

Q34

BSS123

R112

511

C120

4.7 uF

10%

10V

SS-25122-475-10

C180

18 pF

D16

BBY40

Q33

BSS123

SS-32564

C152

2.2 uF

10%

10V

C187

1000 pF

R147

3.01K

L45

100 nH

C155

0.1 uF

10%

R148

267

R133

2.21K

D19

SMV1493-011

29054

2 1

U21

MIC4416BM4

365621

CTL

4GND 1

C163

1000 pF

R132

182

Q32

Si2301DS

3 2

Q24

MMBR901

2 3

R185

47.5K

R125

47.5

C340

0.01 uF

C174

4.7 pF

.25pF

Q31

Si2301DS

32631

3 2

Q26

MMBR901

2 3

R98

23.7K

R138

16.2

C181

1000 pF

U17

MIC5205

365499

VOUT 5

ON/OFF

VIN

BYP 4

GND

Q21

MMBR901

32099

2 3

C158

0.1 uF

10%

C132

220 pF

R139

16.2

C295

0.01 uF

10%

Q22

MMBR901

2 3

C164

1000 pF

R144

16.2

C118

1.0 uF

20%

35V

25122-105-35-A

Q25

MMBR901

2 3

R120

1.3K

R121

C170

15 pF

U16

LP2980A-5.0

365413

VOUT 5

ON/OFF

VIN

GND 2

Q23

MMBR901

2 3

TP8

C148

1000 pF

R117

1.1K

Q27

MMBR901

2 3

C191

0.01 uF

10%

R115

475

TP9

C137

22 pF

C192

0.1 uF

10%

R89

110K

C142

22 pF

R111

TP10

R160

R87

R122

121

C339

0.1 uF

TP11

C139

4.7 pF

.25pF

R118

681

C193

1.0 uF

20%

35V

C133

1000 pF

R156

1.1K

TP13

R123

35.7K

C190

2.2 uF

20%

16V

C128

0.1 uF

10%

R155

825

TP12

TP 1

C202

.033 uF

10%

R113

100

C125

2.2 uF

10%

10V

R157

100

TP7

C203

.033 uF

10%

R119

100

TP14

C129

0.1 uF

10%

R154

475

D23

BAR43S

SS-35620

R126

100

C134

1000 pF

5% R151

22.1

D24

BAR43S

R140

22.1K

R91

200K

C138

22 pF

C199

.033 uF

10%

R134

47.5K

C130

1.0 pF

.1pF

R171

100K

C201

1.0 uF

20%

35V

R127

22.1

C144

1000 pF

R178

R162

U42

12.8 MHz

37132

GND

OUT 3

Vcc

C186

1000 pF

R173

100K

Q46

MMBT3904

SS-32089-3904

2 3

R320

22.1

D20

SMV1207-001

C171

1000 pF

C196

1.0 uF

20%

35V

D21

SMV1207-001

29036

1 3

C179

1000 pF

R294

100

C157

0.1 uF

10%

D17

SMV1213-001

29044

1 3

A A

B B

C C

D D

P38

R22R21 R23

P41P40

P43

P44

R29

P47 P49P45

R28

P46

P48

R30

R27

P42

P52

P53

P39

P50

R26R25

P51

R24

7.5VT_XCVR

+5VTX

VCONTROL

+5VTX

7.5VT_XCVR

TXSINK

4.5VSW_XCVR

TXSINK

4.5VSW_XCVR

+3.3VDIG

4.5VSW_XCVR

7.5VT_XCVR

VCONTROL

+3.3VDIG

7.5VT_XCVR

TXLO11

PATEMP 1

7.5VT_XCVR8

TX/RX11

RXSINK 10

SIDERF 8

RX_INPUT 10

4.5VSW_XCVR8,11

PWRSET9

GND_SIGNAL1,2,3,4,5,6,7,8,9,10,11

+3.3VDIG11

TOPRF 8

STD/SIDE11

Scale

Rev

Sheet of

Size

CAGE Code Dwg No.

None

23386

Drawn

Thales Communications, Inc.

Rockville, Maryland

Thursday, November 15, 2001 12 12

024200716

E. HOOKER

(FROM SYNTH)

PRE-DRIVER POWER MODULE

SENSOR LOCATED CLOSE

TO POWER MODULE

DETECTOR / POWER

CONTROL

TX/RX PIN

SWITCH

ANTENNA PIN

SWITCH

2 dB attenuator

Transceiver Transmitter

R74

100K

L35

180 nH

5% C114

10 pF

R69

L37

100 nH

L41

1.2 uH

C108

4.7 uF

10%

10V

SS-25122-475-10

C86

15 pF

R82

100K

D13

MA4P7001F

36047

2 1

R47

562

L40

1.2 uH

D14

MA4P7001F

36047

MMBR941

32098

2 3

Q14

BSS123

L80

MA4P7001F

2 1

C83

10 pF

Q16

BSS123

MA4P7001F

36047

L30

6T#24-AW

3400439-9

C94

1000 pF

D10

MA4P7001F

2 1

L31

5T#24-AW

3400439-10

C97

1000 pF

MA4P7001F

2 1

C84

6.8 pF

.25pF

C74

0.01 uF

10%

R73

1.82K

C92

0.01 uF

10%

C98

1000 pF

TP5

R57

150

R72

1.82K

R319

TP6

R55

1.3K

L38

1.2 uH

R52

475

Q15

BSS123

SS-32564

U14

LP2980A-5.0

365413

VOUT 5

ON/OFF

VIN

GND 2

C216

0.1 uF

10%

C540

1000 pF

Q18

BSS123

L28

120 nH

10%

R191

100

R79

100K

R49

R81

100K

R44

475

C78

1000 pF

Q17

BSS123

Q19

BSS123

D12

HSMS-2800

SS-35616

R80

100K

D11

HSMS-2800

SS-35616

1 3

C331

0.018 uF

10%

C104

390 pF

C328

3.3 uF

10%

16V

C306

0.1 uF

C335

0.018 uF

10%

C103

390 pF

L68

0.22 uH

10%

L39

1.2 uH

C334

0.1 uF

10%

C109

0.1 uF

10%

R315

562

C38

0.1 uF

10%

C82

22 pF

C107

1000 pF

C81

2.7 pF

.25pF

LP2980A-3.3

365460

VOUT 5

ON/OFF

VIN

GND 2

L42

6T-AW

3400439-11

U11

LM50B

365437

GND

3+V 1

OUT 2

C43

4.7 uF

10%

10V

SS-25122-475-10

R66

51.1

RF IN

VGG

VDD

RF OUT

U37

M68776-E01

84604

R68

100K

C332

0.018 uF

10%

R67

51.1

50@100

45270

Q10

Si2301DS

32631

3 2

C95

3300 pF

C100

1000 pF

Q12

Si2301DS

32631

3 2

R71

20K

U12

20 dB Coupler

1600458-1

3 1

Q13

Si2301DS

32631

3 2

U13

LMC7101A

365438

5 2

R78

47.5

Q11

Si2301DS

32631

3 2

R85

47.5

1/10W

C110

0.01 uF

10%

C127

1.5 pF

.1pF

R75

2.21K

R84

43.2

R64

R77

43.2

R70

R83

43.2

C106

1000 pF

R76

43.2

C105

1000 pF

C111

1000 pF

C96

1000 pF

C209

6.8 pF

.25pF

R65

C88

0.01 uF

10%

C115

10 pF

R558

562

C102

1000 pF

C77

10 pF

C113

1000 pF

R557

562

C101

1000 pF

R48

C112

1000 pF

C336

0.01 uF

10%

R51

51.1

C116

1000 pF

Datron World Communications G25RMV110 VHF Mobile Radio User Manual G25AMK005a

Datron World Communications Inc VHF Mobile Radio G25AMK005a

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