Codan Radio Communications UT-3H930-SW UT-3H930-SW User Manual IM26 UT3900S 5
Codan Radio Communications UT-3H930-SW IM26 UT3900S 5
Contents
- 1. Users guide
- 2. Revised users guide
Revised users guide
DANIELS
ELECTRONICS LTD.
TM
MT-3 RADIO SYSTEMS
PAGING MODULATOR
INSTRUCTION
MANUAL
CI-PM-3
Covers models: CI-PM-3-00
Copyright © 2002 Daniels Electronics Ltd. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or
transmitted in any form or by any means, electronic, mechanical, photocopying, recording or other wise, without the prior written consent of
Daniels Electronics Ltd.
DE™ is a registered trademark of Daniels Electronic Ltd. registered in the United States Patent and Trademark Office.
Printing Date: Dec 2002 Daniels Electronics Ltd.
Issue Date: February 2002 Previous Issue Date: Nov 99 Victoria, BC
Issue: 4 Rev A Previous Issue: 3
Part No.: IM55-CIPM3 PRINTED IN CANADA
DANIELS
ELECTRONICS LTD
TM
ii CI-PM-3 Paging Modulator Instruction Manual
Reviewed By:
NOTE:
The user's authority to operate this equipment could be revoked through any
changes or modifications not expressly approved by Daniels Electronics Ltd.
The design of this equipment is subject to change due to continuous
development. This equipment may incorporate minor changes in detail from the
information contained in this manual.
DANIELS
ELECTRONICS LTD
TM
CI-PM-3 Paging Modulator Instruction Manual iii
TABLE OF CONTENTS Page
1 GENERAL............................................................................................................................ 1-1
1.1 Introduction .......................................................................................................... 1-1
1.2 Construction ......................................................................................................... 1-2
1.3 Printed Circuit Board Numbering Convention...................................................... 1-2
1.4 Specifications........................................................................................................ 1-2
1.4.1 General Specifications .................................................................................... 1-2
1.4.2 CTCSS Decoder/Encoder (Option) ................................................................ 1-4
1.4.3 Physical Specifications ................................................................................... 1-5
2 THEORY OF OPERATION................................................................................................. 2-1
2.1 Paging Signal Path................................................................................................ 2-1
2.1.1 2-Level Digital Paging .................................................................................... 2-1
2.1.1.1 Self Test Circuitry..................................................................................... 2-2
2.1.2 4-Level Digital Paging .................................................................................... 2-2
2.1.3 Analog Paging ................................................................................................ 2-3
2.1.4 Front Panel Indicator Circuitry ....................................................................... 2-4
2.1.4.1 Data Indicator Circuitry ............................................................................ 2-4
2.1.4.2 Analog / Digital Indicator Circuitry........................................................... 2-4
2.1.4.3 LED Power............................................................................................... 2-4
2.2 OCXO/PLL .......................................................................................................... 2-5
2.2.1 Standard Frequency Reference ....................................................................... 2-5
2.2.2 High Stability Frequency Reference ............................................................... 2-5
2.3 Configuration Options.......................................................................................... 2-6
2.3.1 Simultaneous Broadcasting (2 Level Paging Only)......................................... 2-6
3 ALIGNMENT PROCEDURE AND INSTALLATION ...................................................... 3-1
3.1 General ................................................................................................................. 3-1
3.2 Repair Notes......................................................................................................... 3-1
3.3 Recommended Equipment List ............................................................................. 3-1
3.4 Installation ............................................................................................................ 3-2
3.5 Alignment ............................................................................................................. 3-2
3.6 Frequency (Digital Paging) Adjustment................................................................ 3-2
3.7 Reference (Analog Paging) Adjustment................................................................ 3-3
3.8 Test Data Symmetry Adjustment .......................................................................... 3-3
3.9 2 And 4 Level Deviation Adjustment..................................................................... 3-3
3.10 PLL Setup............................................................................................................. 3-4
3.11 Data Delay Setup.................................................................................................. 3-5
3.12 Simulcast Delay Setup.......................................................................................... 3-6
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iv CI-PM-3 Paging Modulator Instruction Manual
ALIGNMENT PROCEDURE AND INSTALLATION CONTINUED
3.13 Repeater Configuration......................................................................................... 3-8
3.13.1 Base Transmitter Site CI-PM-3 Configuration ............................................... 3-8
3.13.1.1 Digital-Only Paging.................................................................................. 3-8
3.13.1.2 Analog/Digital Paging............................................................................... 3-8
3.13.2 Repeater Site CI-PM-3 Configuration ............................................................ 3-8
3.13.2.1 Digital-Only Repeater............................................................................... 3-9
3.13.2.2 Analog/Digital Repeater............................................................................ 3-9
3.13.3 TS-64 Configuration....................................................................................... 3-9
4 CONNECTOR PIN FUNCTIONS AND JUMPER FUNCTIONS.................................... 4-1
4.1 Data / Control Port (Connector J1) Pin Functions................................................ 4-1
4.2 Motherboard Interface (Connector P1) Pin Functions.......................................... 4-1
4.3 CI-PM-3 Data Delay Jumper Settings.................................................................. 4-3
4.4 CI-PM-3 Circuit Board Jumpers .......................................................................... 4-4
4.5 TS-64 MOD1 Jumper Settings - (If installed)...................................................... 4-5
4.6 4-Level Modulation Bit Pattern............................................................................. 4-5
4.7 Receiver IF / Audio PCB Jumper Settings............................................................ 4-5
4.8 Transmitter Audio Processor Jumper Settings...................................................... 4-6
4.9 Transmitter Synthesizer Jumper Settings.............................................................. 4-9
4.10 CI-PM-3 Test Points .......................................................................................... 4-10
5 ILLUSTRATIONS AND SCHEMATIC DIAGRAMS ....................................................... 5-1
5.1 CI-PM-3 Front Panel Controls............................................................................. 5-1
5.2 Simulcast Paging Example.................................................................................... 5-2
5.3 CI-PM-3 Component Layout (Through-Hole Side) ............................................. 5-3
5.4 CI-PM-3 Component Layout (Surface-Mount Side)............................................ 5-4
5.5 CI-PM-3 Schematic Diagram ............................................................................... 5-5
5.6 CI-PM-3 Schematic Diagram ............................................................................... 5-6
5.7 CI-PM-3 Schematic Diagram Component Location Table.................................... 5-7
6 PARTS LISTS ...................................................................................................................... 6-1
6.1 CI-PM-3 Electrical Parts List................................................................................ 6-1
6.2 CI-PM-3 Mechanical Parts List............................................................................ 6-5
7 REVISION HISTORY.......................................................................................................... 7-1
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CI-PM-3 Paging Modulator Instruction Manual v
LIST OF TABLES Page
Table 4-1 Data / Control Port (Connector J1) Pin Functions................................................ 4-1
Table 4-2 Motherboard Interface Connector P1 Pin Functions............................................. 4-1
Table 4-3 Delay Settings....................................................................................................... 4-3
Table 4-4 CI-PM-3 Default Jumper Settings........................................................................ 4-4
Table 4-5 CTCSS Jumper Settings....................................................................................... 4-5
Table 4-6 4-Level Modulation Bit Pattern............................................................................. 4-5
Table 4-9 Receiver IF / Audio PCB Jumper Settings............................................................ 4-5
Table 4-7 Transmitter Audio Processor V1.6 Jumper Settings ............................................. 4-6
Table 4-8 Transmitter Audio Processor V1.8 Jumper Settings ............................................. 4-6
Table 4-9 Transmitter Audio Processor V2.3 Jumper Settings ............................................. 4-8
Table 4-10 CI-PM-3 Test Points .......................................................................................... 4-10
Table 4-11 Component Location Table Schematic.................................................................. 5-7
LIST OF ILLUSTRATIONS Page
Figure 4-1 Transmitter Audio Processor V1.6 Jumper Settings ............................................. 4-6
Figure 4-2 Transmitter Audio Processor V1.8 Jumper Settings ............................................. 4-6
Figure 4-3 Transmitter Audio Processor V2.3 Jumper Settings ............................................. 4-8
Figure 4-4 VHF and (400 MHz) UHF Synthesizer Analog PCB Jumper Settings................ 4-9
Figure 4-5 VHF and (400 MHz) UHF Synthesizer Digital PCB Jumper Settings ................ 4-9
Figure 4-5 800MHz and 900MHz Transmitter Synthesizer Jumper Settings ........................ 4-9
Figure 5-1 CI-PM-3 Front Panel Controls............................................................................. 5-1
Figure 5-2 Simulcast Paging Example.................................................................................... 5-2
Figure 5-3 CI-PM-3 Circuit Board (Through-Hole Side) ...................................................... 5-3
Figure 5-4 CI-PM-3 Circuit Board (Surface-Mount Side)..................................................... 5-4
Figure 5-5 CI-PM-3 Circuit Board Schematic Diagram......................................................... 5-5
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This Page Intentionally Left Blank.
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CI-PM-3 Paging Modulator Instruction Manual 1-1
1 GENERAL
1.1 Introduction
The CI-PM-3 Paging Modulator module is an optional plug-in component of the MT-3 Radio
Repeater System. This module provides digital and/or analog paging capability for Daniels MT-3
transmitters in all supported frequency bands.
The CI-PM-3 is designed for low power consumption, typically drawing less than 250 mA in
steady state. In its standard configuration, the CI-PM-3 uses an on-board frequency reference
source consisting of a 10 MHz OCXO with a standard stability of 0.03 PPM. For high stability
applications (such as Simulcast), the CI-PM-3 Paging Modulator may be configured to use an
external high stability reference source (i.e. rubidium, GPS or WWV) with a standard stability
greater than or equal to 0.002 PPM, to discipline the on-board phase-locked loop OCXO oscillator.
To ensure that paging signals are the same relative to each transmitter, the CI-PM-3 also
incorporates a limited delay compensation for the different link propagation paths between
transmitters.
The CI-PM-3 Paging Modulator supports both analog and digital paging formats, and can transmit
POCSAG and other 2-level modulation schemes at data transfer rates of 512, 1200, and 2400
Baud. It can also be configured for use as a data repeater, whereby 2-level paging data is recovered,
re-shaped and then re-transmitted to an additional repeater/paging transmitter. The CI-PM-3
supports 4-level modulation formats in non-repeater mode (i.e. in a base station paging transmitter
application only) at data transfer rates up to 1600 BPS. Each of the four modulation deviation
levels can be independently set, making the CI-PM-3 suitable for use in such pager signaling
schemes as Motorola’s FLEX™ Paging Protocol.
Setup conditions are established via front panel switch settings, while internal jumper settings and
setup adjustments are easily accessible using the EC-96, 96 Pin Extender Card.
The CI-PM-3 Paging Modulator includes the following standard features:
- low power analog and CMOS control circuitry.
- extended operating temperature range;
- jumper selectable Repeater/paging transmitter configuration;
- on-board +/-0.03 PPM 10 MHz OCXO;
- front panel selection of PLL OCXO using external high stability frequency reference;
- jumper and line selectable analog / digital paging configuration;
- connection for optional CTCSS encoder / decoder;
- balanced 600 Ω / single-ended microphone input;
- selectable digital delay for Simulcast operation
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1-2 CI-PM-3 Paging Modulator Instruction Manual
1.2 Construction
The CI-PM-3 Paging Modulator is packaged in a compact Eurostandard shell module housing of
nickel/steel with an anodized aluminum front panel. Corrosion resistant fasteners are used
throughout the assembly.
1.3 Printed Circuit Board Numbering Convention
To ease troubleshooting and maintenance procedures, Daniels Electronics Limited has adopted a
printed circuit board (PCB) numbering convention in which the last two digits of the Circuit Board
number represent the Circuit Board version. For example:
• PCB number 50002-02 indicates Circuit Board version 2.0.
• PCB number 43-912010 indicates Circuit Board version 1.0;
All PCB's manufactured by Daniels Electronics are identified by one of the above conventions.
1.4 Specifications
1.4.1 General Specifications
Model Number: CI-PM-3
Type: MT-3 Series Paging Modulator
Compatibility: MT-3 Series Radio Systems
Modulation: 16K0F3E (FM Analog), and
14K7F1D (FM Data Transmission)
Audio Input: Balanced 600 Ω(tone or voice)
Digital Input: Bipolar: RS-232 compatible
Reference Input: 10 MHz, 0.5 to 2.5 V rms, 50 Ω Front Panel SMA
Reference Output: 10 MHz (Modulated), 2.5 V rms, 50 Ω Front Panel
SMA
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CI-PM-3 Paging Modulator Instruction Manual 1-3
Frequency Stability: Standard: ±0.03ppm from -40°C to +60°C
Optional: External High Stability ±0.002ppm
from -40°C to +60°C (requires
WWV or GPS reference source).
Duty Cycle: Continuous, 100% from -40°C to +60°C
Audio Response: 0 Hz to 3.4 kHz
Maximum Deviation: +/- 50 PPM
Analog / Digital PTT Activation: Front panel connector and rear motherboard
connection
Current Consumption: +13.8 VDC supply: 600 mA power
200 mA steady state
+9.5 VDC supply: 200mA (all options enabled)
80mA (all options disabled)
70mA (LED indicators off).
Operating Temperature Range: -40°C to +60°C
Paging Formats: 4-Level Base Station paging only ( Flex )
2-Level Multiple Transmitter paging (POCSAG)
Simulcast Operation: Supported with the addition of WWV/GPS receiver.
IC Type Approval: Approved for use with MT-3 VHF Tx additional
frequency band approvals to be sought.
FCC Type Acceptance: Approved for use with MT-3 VHF Tx additional
frequency band approvals to be sought.
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1-4 CI-PM-3 Paging Modulator Instruction Manual
1.4.2 CTCSS Decoder/Encoder (Option)
Manufacturer: Communications Specialists Inc.
Model Number: TS-64
Number of Tones: 64
Frequency Range of Tones: 33.0 to 254.1 Hz
Signal to Noise: Better than 4 dB SINAD
Decode Time: 150 ms nominal
Fade Time: 350 ms nominal
Squelch Tail Elimination:: 160 ms reverse phase burst
Current Consumption: 9 mA
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CI-PM-3 Paging Modulator Instruction Manual 1-5
1.4.3 Physical Specifications
Physical Dimensions: Width: Height: Depth:
3.5 cm (1.38") 12.8 cm (5.05") 19 cm (7.5")
Module Weight: 0.4 kg (1 lb.)
Corrosion Prevention: Anodized aluminum construction with stainless steel
hardware. Selectively applied Conformal coated
glass epoxy 4 layer printed circuit boards. Gold
plated module connectors.
Module Design: Compact Eurostandard modular design. Plug-in
module mates with Daniels standard 19" M3 repeater
subrack. Interchangeable for test and repair.
External Connections: REF Input and Output SMA connectors located on
the module’s front panel. Motherboard Connections
(Audio, Modulation, Power, and Control) are made
through a 96 pin, gold plated type C connector on the
rear of the module. User connections (Audio,
Modulation, and Control) are made through a front
panel DB-15 connector as well as through the 96 pin
connector on the rear of the module.
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CI-PM-3 Paging Modulator Instruction Manual 2-1
2 THEORY OF OPERATION
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CI-PM-3 Paging Modulator Instruction Manual 3-1
3 ALIGNMENT PROCEDURE AND INSTALLATION
3.1 General
The CI-PM-3 Paging Modulator is by default configured for stand-alone base station paging, using
2-Level paging data with a binary polarity of 1, and using the on-board +/-0.03 PPM 10 MHz
OCXO. Table 4-4 contains a complete list of CI-PM-3 default jumper settings. The CI-PM-3 can
also be configured for 4-level signal (base transmitter only) paging, remote paging, link repeater or
higher stability operation. Each of these configurations is covered separately in the following
sections.
3.2 Repair Notes
Removal and replacement of surface mount components should be performed only in specifically
designed surface mount rework and repair stations complete with electrostatic discharge (ESD)
protection.
To help prevent damage to the circuit board pads when removing Surface Mount Solder Jumpers, it
is recommended that solder braid be used in place of manual vacuum de-soldering tools.
3.3 Recommended Equipment List
Alignment of the CI-PM-3 requires the following test and radio equipment, or its equivalent:
• Power Supply: Regulated +13.8 VDC at 2 A
• Oscilloscope / Multi-meter: Fluke 97 Scopemeter
• Current Meter: Fluke 75 Multi-meter
• Radio Communications Test Set: Marconi Instruments 2955R (W/External Reference)
• Sub-rack: Daniels SR-3 Series 19” Sub-rack
• System Monitor: Daniels SM-3 Series System Monitor
• Transmitter Module: Daniels Enhanced Performance VT-3 / UT-3 Series
• Extender Card and Cable: Daniels EC-96K, 96 Pin Extender Card and Cable
• Alignment Tool: Johanson 8766
Note: It is highly recommended that the Radio Communications Test Set be frequency locked to
an external 10 MHz reference (WWV or GPS), especially if the factory-adjusted frequency
settings are to be altered in any way.
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3-2 CI-PM-3 Paging Modulator Instruction Manual
3.4 Installation
1. Install the Daniels EC-96 Extender Card in either the far left-hand or the far right-hand slot of
the subrack (as viewed from the front). Remove the side covers of the CI-PM-3 Paging
Modulator and attach the 96-Pin Extender Cable between it and the Extender Card.
2. Apply +13.8 VDC power to the Subrack. Allow approximately 15 minutes for warm-up.
3.5 Alignment
Refer to Figure 5-1 for the location of the CI-PM-3 module front panel controls.
1. Ensure the CI-PM-3 circuit board jumpers are initialized to their default settings (refer to
Table 4-4). Note any differences so that the jumpers can be returned to their former positions.
2. For alignment procedures in this section, set the front panel switches to the following settings,
unless otherwise noted:
a) SW1 (FREQ REF) set to INT
b) SW2 (MODE) set to SETUP
c) SW3 (SET MOD) set to 2 LEVEL
d) SW4 (SET DEV) set to Data “1” (Top Position)
3. Ensure the Transmitter Audio Processor circuit board jumpers are initialized to their default
settings (refer to Tables 4-7 or 4-8).
4. Connect the CI-PM-3 REF OUT connector to the transmitter REFERENCE INPUT connector
via a SMA to SMA RF cable.
5. Remove external connections to the DB-15 connector on the CI-PM-3 or the Alarm lines on the
back of the subrack.
Do not connect any other input signal/control lines to the CI-PM-3 at this time.
3.6 Frequency (Digital Paging) Adjustment
CI-PM-3 frequency adjustments are factory set. It is strongly recommended that they not be
altered. The following procedure applies only if field adjustment is required:
1. Set front panel SW1 (FREQ REF) INT and remove shunt jumper JU6-A.
2. Set shunt jumpers JU23-A and JU41-B.
3. Set the transmitter front panel NORM/KEY TX switch to KEY TX.
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CI-PM-3 Paging Modulator Instruction Manual 3-3
4. Monitor the Communications Test Set and adjust FREQ ADJ potentiometer R82 for the
transmitter operating frequency +/-1 Hz.
5. Set the transmitter front panel NORM/KEY TX switch to NORM and replace JU6-A.
3.7 Reference (Analog Paging) Adjustment
CI-PM-3 Reference frequency adjustment is factory set. It is strongly recommended that they not
be altered. The following procedure applies only if field adjustment is required.
1. Ensure shunt jumper JU6-A is installed.
2. Set shunt jumpers JU23-A and JU41-A (or not installed).
3. Set the transmitter front panel NORM/KEY TX switch to KEY TX.
4. Monitor the Communications Test Set and adjust REF ADJ potentiometer R24 for the
transmitter operating frequency +/-1 Hz.
5. Set the transmitter front panel NORM/KEY TX switch to NORM.
3.8 Test Data Symmetry Adjustment
1. Set the oscilloscope for 1.0 V/Div (vertical) and 0.5 ms/Div (horizontal). Monitor TP10.
2. Set shunt jumpers JU23-A and JU41-B, and set JU36 to bypass.
3. Set SW3 (SET MOD) to 2 LEVEL and SW4 (SET DEV) to the center or “Continuous Bit
Stream” position.
4. Adjust R70 (Test Data Symmetry Adjust) for symmetrical positive and negative pulses (i.e. of
equal width) as measured at TP10.
3.9 2 And 4 Level Deviation Adjustment
1. Set shunt jumpers JU23-A and JU41-A (or not installed).
2. Monitor TP11 with a voltmeter and adjust R110 for approximately 4 volts at TP11.
3. Monitor the transmitter frequency and deviation on the Communications Test Set and set the
transmitter front panel NORM/KEY TX switch to KEY TX.
4. Set shunt jumpers JU23-A and JU41-B.
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3-4 CI-PM-3 Paging Modulator Instruction Manual
5. Set SW3 (SET MOD) to 2 LEVEL, and SW4 (SET DEV) to the Data “1” (top) position. For
a VHF system adjust R5 (2-LVL +Dev) for +4.8 kHz deviation (4.8 kHz above center
frequency). For a UHF system adjust R5 for +4.2 kHz deviation.
6. Change SW4 (SET DEV) to the Data “0” (bottom) position. For a VHF system adjust R6
(2-LVL -Dev) for -4.8 kHz deviation (4.8 kHz below center frequency). For a UHF system
adjust R6 for –4.2 kHz deviation.
7. Set shunt jumper JU23-B.
8. Change SW3 (SET MOD) to 4 LEVEL. Adjust R4 (4-LVL -Dev) for -1.6 kHz deviation.
9. Change SW4 (SET DEV) to the Data “1” (top) position. Adjust R3 (4-LVL +Dev) for +1.6
kHz deviation.
10. Set SW3 (SET MOD) to 2 LEVEL. Set SW4 (SET DEV) to the center position. Adjust R23
(BP DEV ADJ) for maximum deviation of +/-4.8 kHz.
3.10 PLL Setup
CI-PM-3 PLL adjustments are factory set. It is strongly recommended that they not be altered.
The following procedure applies only if field adjustment is required:
1. Install Power Enable surface mount jumpers JU37, JU39, JU56 and JU59.
2. Ensure front panel SW1 (FREQ REF) is set to EXT, and shunt jumper JU6-A is removed.
3. Set shunt jumpers JU23-A and JU41-A (or not installed).
4. Connect the 50 Ohm output of a high stability, 10 MHz reference to front panel REF IN SMA
connector J3. Ensure the output level of the external reference is between 0.5 to 2.5 V rms.
Steps 5 through 7 apply to Daniels VR-3/150 transmitters.
5. Measure and record the voltage at TP13 with the DMM.
6. Measure the voltage at TP12 with the DMM.
7. Adjust PLL CAL potentiometer R101 until the voltage measured at TP12 matches the voltage
measured in step (5) above within ± 0.2 Vdc. Note that when the PLL locks in, the voltage at
TP12 will also lock in to within ±0.2 Vdc of the voltage at TP13. At this point further
adjustment of R101 will not change the value unless it is brought out of lock.
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CI-PM-3 Paging Modulator Instruction Manual 3-5
Steps 8 and 9 apply to Daniels UHF transmitters.
8. Monitor TP12 with an oscilloscope.
9. Adjust the PLL CAL potentiometer R101 until the voltage measured at TP12 is over 2.7 volts.
You should observe a clean DC voltage when the PLL locks in. Any voltage below 2.7 volts
results in a badly distorted 10 MHz square wave.
10. Replace shunt jumper JU6-A.
3.11 Data Delay Setup
1. Enable the DATA DELAY option by installing Power Enable surface-mount jumpers JU38
And moving the two DATA DELAY shunt jumpers of JU36 to the DELAY (vertical) position.
2. Set front panel switches SW2 (MODE) to SETUP, SW3 (SET MOD) to 2 LEVEL, and SW4
(SET DEV) to “Continuous Bit Stream” (refer to SW4 DETAIL in Figure 6-1).
To calibrate the positive and negative edge delay:
3. Set the oscilloscope for 1.0 V/Div (vertical) and 0.5 µs/Div (horizontal). Select channel 1 as
trigger input and set Trigger Slope to positive.
4. Monitor the data signal at TP9 on channel 1 of the oscilloscope.
5. Monitor and record the period of the data delay pulse at TP7 on channel 2 of the oscilloscope.
6. Set Trigger Slope to negative.
7. Continue monitoring the data signal at TP9 on channel 1 of the oscilloscope while monitoring
the period of the data delay pulse at TP7 on channel 2.
8. Adjust R95, DELAY SYNC, until the period of the data delay pulse measured at TP7 is
identical to that measured in step (5) above.
To set the delay resolution (output frequency of Programmable Counter U22):
9. With surface mount jumpers JU31A, JU32A and JU33A installed, monitor the frequency of the
signal at TP8.
10. Adjust tuning capacitor C55 for a frequency of 1.0 MHz (+/- 10 Hz) at TP8.
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3-6 CI-PM-3 Paging Modulator Instruction Manual
3.12 Simulcast Delay Setup
A typical Simulcast system is depicted in Figure 5-2. To correctly determine the differing
propagation path delays to each transmitter in a Simulcast system and compensate for them, signal
delays in both the transmission medium and the equipment must be known. For the purposes of
this manual, it is assumed that only Daniels MT-3 radio equipment will be utilized at each paging
site, and that each radio subrack will be identically configured with CI-PM-3 Paging Modulator
modules.
Signal delays from the base transmitter to any paging transmitter are calculated as follows:
Delay = t(Link) + t(Eqpt)
Where: t(Link) = Propagation delay from Base TX to Paging TX
t(Eqpt) =t
(RX) + t(PM) + t(TX)
t(RX) = Delay through Receiver
t(PM) = Delay through Paging Modulator
t(TX) = Delay through Transmitter
d = Distance
The delay through the equipment at each paging transmitter site, t(Eqpt),will be identical for each link,
and can therefore be eliminated from our calculations. As such, the only delay variable(s) of
interest will be the distance from the base transmitter to each paging transmitter. Since radio waves
propagate at or near the speed of light (3x108 m/sec), the delay calculation becomes:
Delay = t(Link)
= d (km)
×
3.33
µ
sec
or
= d (mi)
×
5.37
µ
sec
For the Simulcast system depicted in Figure 5-2, the signal transmitted by PAGING TX #1 will not
be delayed, as this is the furthest site from the BASE TX. However, to ensure identical signal
processing characteristics at each site, the DATA DELAY circuitry of the CI-PM-3 at PAGING
TX #1 will be enabled, but with zero delay selected. PAGING TX #2 will have its paging signal
delayed by a value proportional to the difference in distance between PAGING TX #1 and
PAGING TX #2 to the BASE TX. The delay for PAGING TX #2 is therefore calculated as:
Delay(Link B) =(d
(Link A) (km) - d(Link B) (km))
×
3.33
µ
sec
or
=(d
(Link A) (mi) - d(Link B) (mi))
×
5.37
µ
sec
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ELECTRONICS LTD
TM
CI-PM-3 Paging Modulator Instruction Manual 3-7
The delay calculations for any paging transmitter site in a multiple-transmitter system, with
distances measured from the site of interest back to the BASE TX, becomes:
Delay(Site of Interest) =(d
(Furthest Site) (km) - d(Site of Interest) (km))
×
3.33
µ
sec
or
=(d
(Furthest Site) (mi) - d(Site of Interest) (mi))
×
5.37
µ
sec
To set the delay value: Once the required delay has been calculated for a particular paging site, refer
to Table 4-3 delay settings:
a) Locate the DELAY (µsec) value which is closest to the calculated value.
b) Set surface mount jumpers JU31, JU32, JU33, and JU35 according Table 4-3 in section 4.3.
Data Delay Adjust: To set delay values other than those listed in Table 4-3:
1. Set the oscilloscope for 1.0 V/Div (vertical) and 0.5 µs/Div (horizontal). Select channel 1 as
trigger input and set Trigger Slope to positive.
2. Monitor the test data signal at TP9 on channel 1 of the oscilloscope and the output signal at
TP5 on channel 2.
3. Adjust the oscilloscope for maximum horizontal display of the distance between the signals’
leading edges. Adjust tuning capacitor C55 until the output signal’s leading edge on channel 2
is delayed from the input signal’s leading edge on channel 1 by the desired delay amount.
Example: To set a delay of 44 µsec:
i) Set oscilloscope horizontal resolution to 5 µsec/div.
ii) Install surface mount jumpers JU31B, JU32A, JU33A and JU35E (refer to Table 4-3).
iii) Monitor TP9 on channel 1 of the oscilloscope. Monitor TP5 on channel 2 of the oscilloscope.
Adjust C55 for 8.8 horizontal divisions between the signals’ leading edges
(8.8✕5 µsec = 44 µsec delay).
DANIELS
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3-8 CI-PM-3 Paging Modulator Instruction Manual
3.13 Repeater Configuration
The CI-PM-3 modules at both the base transmitter and paging/repeater must be configured
individually. Individual setup procedures must also be followed for analog/digital paging and for
digital-only paging.
Note: The CI-PM-3 modules must be set for 2-level signal operation only when configured for
use in a paging repeater system.
3.13.1 Base Transmitter Site CI-PM-3 Configuration
The setup instructions of sections 3.13.1 through 3.13.3 must be completed prior to commencing
setup of the remote paging/repeater site CI-PM-3. Jumper designators separated by a ‘/’ indicates
an ‘and/or’ selection (eg JU19/JU45 means JU19 and/or JU45).
3.13.1.1 Digital-Only Paging
1. Install shunt jumpers JU7-A, JU8-A, JU10-A, JU41-C and JU23-A, JU23-B or JU23-C.
2. Install surface mount jumpers JU22, JU55, and JU20/JU21.
3. Remove surface mount jumpers JU19, JU28, JU29, JU30, JU34, JU43, JU44, JU45, JU52,
JU53 and JU54.
3.13.1.2 Analog/Digital Paging
Ensure the TS-64 CTCSS Module, MOD1, is installed. Refer to section 3.13.3 for TS-64 CTCSS
Module Configuration and settings for jumpers JU52, JU53 and JU54.
1. Install shunt jumpers JU7-A, JU8-A, JU10-B, JU41-A and JU23-A, JU23-B or JU23-C.
2. Install surface mount jumper JU20/JU21, JU22 and JU55.
3. Remove surface mount jumpers JU19, JU28, JU29, JU30, JU34, JU43, JU44, JU45 and JU51.
3.13.2 Repeater Site CI-PM-3 Configuration
At the remote paging/repeater site, the digital paging signal is received and discriminated by the
receiver, regenerated (reshaped) by the CI-PM-3, and re-transmitted through the normal CI-PM-3
data signal path. Analog paging signals are routed from the receiver, through the CI-PM-3, then
directly to the transmitter.
DANIELS
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TM
CI-PM-3 Paging Modulator Instruction Manual 3-9
3.13.2.1 Digital-Only Repeater
1. Install shunt jumpers JU41-C and JU23-A, JU23-B or JU23-C.
2. Install surface mount jumpers JU7-B, JU8-B, JU10-A, JU19/JU45, JU20/JU21, JU22,
JU29/JU43, and JU55.
3. Remove surface mount jumpers JU34, JU51, JU52, JU53 and JU54.
3.13.2.2 Analog/Digital Repeater
Ensure the TS-64 CTCSS Module, MOD1, is installed. Refer to section 3.13.3 for TS-64 CTCSS
Module Configuration and settings for jumpers JU52, JU53 and JU54.
1. Install shunt jumpers JU7-B, JU8-B, JU10-B, JU41-A and JU23-A, JU23-B or JU23-C.
2. Install surface mount jumpers JU19/JU45, JU20/JU21, JU22, JU28, JU29/JU43, JU30/JU44
and JU55.
3. Remove surface mount jumpers JU34 and JU51.
3.13.3 TS-64 Configuration
1. Ensure POLARITY jumper JP7 is installed.
2. For normal operation (i.e. receiver audio is muted until a CTCSS coded transmission is
received):
a) Ensure TS-64 jumper JP11 is removed.
b) Ground the TS-64 Hang-up Input:
i) Install jumper JU52, or
ii) Remove jumper JU52, install jumper JU53 and ground CTCSS HU/BUSY input J1
Pin 11.
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3-10 CI-PM-3 Paging Modulator Instruction Manual
3. To place the TS-64 in monitor mode (i.e. over-ride the decoder and unmute the receiver audio
for channel monitoring):
a) Ensure TS-64 jumper JP11 is removed.
b) Ensure the TS-64 Hang-up Input is floating or above ground potential:
i) Remove jumpers JU52 and JU53, or
ii) Remove jumper JU52, install jumper JU53, and leave CTCSS HU/BUSY input J1
Pin 11 floating.
4. To disable paging transmission while the channel is busy:
a) Install TS-64 jumper JP11.
b) Remove jumper JU52, install jumpers JU53 and JU54.
DANIELS
ELECTRONICS LTD
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CI-PM-3 Paging Modulator Instruction Manual 4-1
4 CONNECTOR PIN FUNCTIONS AND JUMPER FUNCTIONS
4.1 Data / Control Port (Connector J1) Pin Functions
Table 4-1 Data / Control Port (Connector J1) Pin Functions
PIN NAME FUNCTION
1 2-Lvl Data 2 Level RS-232 Data input.
2 4-Lvl Data 4 Level RS-232 Data input.
3 Ext Clock External Clock for 4 Level signal synchronization.
4 2-Lvl/4-Lvl Select 2 Level / 4 Level select. Low = 2 Level, High = 4 Level.
5 A/D Mode Select Analog / Digital Mode select. Low = Digital, High = Analog.
6 Discr O/P Discriminator Output from Receiver.
7 PTT Push To Talk.
8 Ground Ground.
9 Balanced Audio I/P 1 Balanced Audio Input 1. Routed directly to Transmitter.
10 Balanced Audio I/P 2 Balanced Audio Input 2. Routed directly to Transmitter.
11 Data Out Regenerated digital data from receiver.
12 HU/Busy CTCSS Hang Up / Busy signal from optional CTCSS module.
13 No Connection -
14 No Connection -
15 No Connection -
4.2 Motherboard Interface (Connector P1) Pin Functions
Table 4-2 Motherboard Interface Connector P1 Pin Functions
Note: Bolded entries are utilized by CI-PM-3
PIN NAME FUNCTION
C1 IMC1 Inter-module Communications Line No. 1
B1 5W RX AUDIO 5W RX A/RX B Audio From System Monitor
A1 5W RX AUDIO 5W RX A/RX B Audio From System Monitor
C2 TX A AUDIO CNTL TX A Audio Control
B2 13.8V 13.8V from M3 Motherboard J8 (Unregulated)
A2 13.8V 13.8V from M3 Motherboard J8 (Unregulated)
C3 IMC2 Inter-module Communications Line No. 2
B3 RX A AMPD AUDIO RX A Amplified Audio Output
A3 RX B AMPD AUDIO RX B Amplified Audio Output
C4 TX B AUDIO CNTL TX B Audio Control
B4 9.5V Regulated +9.5V from System Monitor
A4 9.5V Regulated +9.5V from System Monitor
C5 IMC3 Inter-module Communications Line No. 3
B5 RX A 9.5V RX A Current Sense Output Line (Supply)
A5 RX B 9.5V RX B Current Sense Output Line (Supply)
C6 ALARM 1 Inter-module Alarm Line No. 1.
B6 TX A PTT Transmitter A Press To Talk input.
A6 TX B PTT Transmitter B Press To Talk input.
C7 ALARM 2 Inter-module Alarm Line No. 2.
B7 RX A 9.5V MON RX A Current Sense Output Line (Module)
A7 RX B 9.5V MON RX B Current Sense Output Line (Module)
C8 ALARM 3 Inter-module Alarm Line No. 3
B8 RX A COR RX A Carrier Operated Relay Output
A8 RX B COR RX B Carrier Operated Relay Output
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4-2 CI-PM-3 Paging Modulator Instruction Manual
PIN NAME FUNCTION
C9 ALARM 4 Inter-module Alarm Line No. 4
B9 TX A STANDBY TX A Audio Standby
A9 TX B STANDBY TX B Audio Standby
C10 RX A SQL OVERRIDE RX A Squelch Disable Input
B10 RX A DISC O/P RX A Discriminator Output
A10 TX A PTT OUT TX A Microphone Press To Talk Output
C11 ALARM 5 Inter-module Alarm Line No. 5
B11 SPARE 5 Inter-module Spare Line No. 5
A11 SPARE 6 Inter-module Spare Line No. 6
C12 RX A SQL FLAT RX A Squelched, Flat Audio Output
B12 RX A ISO COR A RX A Isolated Carrier Operated Relay, Side A O/P
A12 RX A ISO COR K RX A Isolated Carrier Operated Relay, Side K O/P
C13 ALARM 6 Inter-module Alarm Line No. 6
B13 RX A DISC L/P O/P RX A Discriminator Low-Pass Audio Output
A13 RX B DISC L/P O/P RX B Discriminator Low-Pass Audio Output
C14 RX B SQL DE-EMP RX B Squelched, De-Emphasized Audio Output
B14 SPARE 3 Inter-module Spare Line No. 3
A14 SPARE 4 Inter-module Spare Line No. 4
C15 ALARM 7 Inter-module Alarm Line No. 7
B15 RX A SIG STREN RX A Signal Strength Indicator Output
A15 RX B SIG STREN RX B Signal Strength Indicator Output
C16 TX B BAL I/P 1 TX B Balanced Audio Input, Side 1
B16 TX B SUBT I/P 1 TX B Subtone Audio Input No. 1
A16 TX B PTT OUT TX B Microphone Press To Talk Output
C17 ALARM 8 Inter-module Alarm Line No. 8
B17 TX A VSWR FWD TX A VSWR Forward Level Indicator Output
A17 TX B VSWR FWD TX B VSWR Forward Level Indicator Output
C18 TX A BAL I/P 1 TX B Balanced Audio Input, Side 1
B18 TX A BAL I/P 2 TX B Balanced Audio Input, Side 2
A18 TX B BAL I/P 2 TX B Balanced Audio Input, Side 2
C19 SPARE 1 Inter-module Spare Line No. 1
B19 TX A VSWR REV TX A VSWR Reverse Level Indicator Output
A19 TX B VSWR REV TX B VSWR Reverse Level Indicator Output
C20 SPARE 2 Inter-module Spare Line No. 2
B20 TX A DIR MOD TX A Direct Modulation Input
A20 TX B DIR MOD TX B Direct Modulation Input
C21 TX A CSEL D0 TX A Channel Select Line No. D0
B21 TX A CSEL D1 TX A Channel Select Line No. D1
A21 TX A CSEL D2 TX A Channel Select Line No. D2
C22 TX A SUBT I/P 1 TX A Subtone Audio Input No. 1
B22 RX A MUTE RX A Mute Input
A22 RX A SQL DE-EMP RX A Squelched, De-Emphasized Audio Output
C23 TX A CSEL D3 TX A Channel Select Line No. D3
B23 RX A CSEL D0 RX A Channel Select Line No. D0
A23 RX A CSEL D1 RX A Channel Select Line No. D1
C24 TX A SUBT I/P 2 TX A Subtone Audio Input No. 2
B24 RX A BAL O/P 1 RX A Balanced Audio Output, Side 1
A24 RX A BAL O/P 2 RX A Balanced Audio Output, Side 2
C25 RX A CSEL D2 RX A Channel Select Line No. D2
B25 RX A CSEL D3 RX A Channel Select Line No. D3
A25 TX B CSEL D0 TX B Channel Select Line No. D0
C26 TX B SUBT I/P 2 TX B Subtone Audio Input No. 2
B26 RX B SQL OVERRIDE RX B Squelch Disable Input
A26 RX B MUTE RX B Mute Input
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CI-PM-3 Paging Modulator Instruction Manual 4-3
PIN NAME FUNCTION
C27 TX B CSEL D1 TX B Channel Select Line No. D1
B27 TX B CSEL D2 TX B Channel Select Line No. D2
A27 TX B CSEL D3 TX B Channel Select Line No. D3
C28 RX B DISC O/P RX B Discriminator Audio Output
B28 RX B ISO COR K RX B Isolated Carrier Operated Relay, Side K O/P
A28 RX B ISO COR A RX B Isolated Carrier Operated Relay, Side A O/P
C29 RX B CSEL D0 RX B Channel Select Line No. D0
B29 RX B CSEL D1 RX B Channel Select Line No. D1
A29 RX B CSEL D2 RX B Channel Select Line No. D2
C30 RX B BAL O/P 1 RX B Balanced Audio Output, Side 1
B30 RX B BAL O/P 2 RX B Balanced Audio Output, Side 2
A30 RX B SQL FLAT RX B Squelched, Flat Audio Output
C31 RX B CSEL D3 RX B Channel Select Line No. D3
B31 RX A PRIORITY COR RX A Priority COR (not affected by Mute)
4.3 CI-PM-3 Data Delay Jumper Settings
Table 4-3 Delay Settings
JUMPER SETTINGS DELAY DISTANCE DISTANCE
JU33 JU32 JU31 JU35 (µSec) (km) (mi)
AAAA41.20 0.75
AABA82.40 1.49
AAAC12 3.60 2.24
ABAA16 4.80 2.98
AAAE20 6.00 3.73
ABBC24 7.20 4.47
ABBA32 9.60 5.97
AABE40 12.00 7.46
ABAC48 14.40 8.95
BAAA64 19.20 11.93
ABAE80 24.00 14.91
ABBC96 28.80 17.90
BABA128 38.40 23.86
ABBE160 48.00 29.83
BAAC192 57.60 35.79
BBAA256 76.80 47.72
BAAE320 96.00 59.65
BABC384 115.20 71.59
BBAB512 153.60 95.45
BABE640 192.00 119.31
BBAC768 230.40 143.17
BBAD1024 307.20 190.89
BBAE1280 384.00 238.62
BBAF1536 460.80 286.34
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4-4 CI-PM-3 Paging Modulator Instruction Manual
4.4 CI-PM-3 Circuit Board Jumpers
Table 4-4 CI-PM-3 Default Jumper Settings
REF.
DESIG. DESCRIPTION JUMPER
TYPE DEFAULT
POSITION
JU1 2-LVL Polarity Select (A = Inverted ; B = Normal) Shunt B
JU2 4-LVL Polarity Select (A = Normal; B = Inverted) Shunt A
JU3 RX A Balanced O/P 1 Enable SM Solder Not Installed
JU4 RX A Balanced O/P 2 Enable SM Solder Not Installed
JU5 XO Polarity Select (A = Normal; B = Inverted) Shunt B
JU6 XO Select (A=OCXO; B=VCXO) Shunt A
JU7 Data Regeneration (A = Disable; B = Enable) SM Solder A
JU8 Data Input (A = Data/Ctrl Port; B=RX A Regenerated Data) SM Solder A
JU9 Discriminator O/P To Front Panel J1 Enable SM Solder Not Installed
JU10 Repeater CTCSS Enable (A = Disable; B = Enable) SM Solder A
JU11 TX A Direct Modulation Enable SM Solder Installed
JU12 TX B Direct Modulation Enable SM Solder Not Installed
JU13 TX A Subtone I/P 2 Enable SM Solder Not Installed
JU14 TX B Subtone I/P 2 Enable SM Solder Not Installed
JU15 TX A Balanced I/P 1 Enable SM Solder Installed
JU16 TX B Balanced I/P 1 Enable SM Solder Not Installed
JU17 TX A Audio Control Enable SM Solder Installed
JU18 TX B Audio Control Enable SM Solder Not Installed
JU19 RX A COR Enable SM Solder Not Installed
JU20 TX A PTT Enable SM Solder Installed
JU21 TX B PTT Enable SM Solder Not Installed
JU22 Repeater PTT Enable SM Solder Not Installed
JU23 Level Select (A=2/4-LVL; B=4-LVL) Shunt A
JU24 TX A Balanced I/P 2 Enable SM Solder Installed
JU25 TX B Balanced I/P 2 Enable SM Solder Not Installed
JU26 Alarm 7 To TX A and B Balanced O/P 1 Enable SM Solder Installed
JU27 Alarm 5 To TX A and B Balanced O/P 2 Enable SM Solder Installed
JU28 CTCSS RX A Mute Bypass SM Solder Not Installed
JU29 RX A Discriminator Output Enable SM Solder Not Installed
JU30 RX A Mute Enable SM Solder Not Installed
JU31 Data Delay Selection (Refer to Table 4-3) SM Solder A
JU32 Data Delay Selection (Refer to Table 4-3) SM Solder A
JU33 Data Delay Selection (Refer to Table 4-3) SM Solder A
JU34 CTCSS PTT Bypass SM Solder Installed
JU35 Data Delay Selection (A - F, Refer to Table 4-3) SM Solder A
JU36 Data Delay/By-Pass Shunt Bypass
JU37 Switched 8.0 Volts For PLL I/O Circuitry SM Solder Not Installed
JU38 Switched 8.0 Volts For Data Delay Circuitry SM Solder Not Installed
JU39 Switched 5.0 Volts For PLL I/O Circuitry SM Solder Not Installed
JU40 Switched 5.0 Volts For Regenerated PTT and Data Delay Circuitry SM Solder Not Installed
JU41 Analog/Digital Mode Over-ride Shunt A
JU42 Low Frequency Deviation Enable SM Solder Not Installed
JU43 RX B Discriminator O/P Enable SM Solder Not Installed
JU44 RX B Mute Enable SM Solder Not Installed
JU45 RX B COR Enable SM Solder Not Installed
JU46 RX B Balanced O/P 1 Enable SM Solder Not Installed
JU47 RX B Balanced O/P 2 Enable SM Solder Not Installed
JU48 External Clock Enable (A = Disable; B = Enable) Shunt A
JU49 Switched 5.0 Volts For 2-LVL / 4-LVL Switching Circuitry SM Solder Installed
JU50 RS-232 Data Out Enable SM Solder Not Installed
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CI-PM-3 Paging Modulator Instruction Manual 4-5
REF.
DESIG. DESCRIPTION JUMPER
TYPE DEFAULT
POSITION
JU51 Repeater Digital-Only PTT Enable SM Solder Installed
JU52 TS-64 Hang-up RX Mute SM Solder Not Installed
JU53 TS-64 Busy Input Enable SM Solder Not Installed
JU54 TS-64 Busy Input Connect to COR SM Solder Not Installed
JU55 TS-64 Repeater PTT Enable (Analog/Digital only) SM Solder Not Installed
JU56 Switched 9.5 Volts For Reference Input Circuitry SM Solder Not Installed
JU57 U18 (14174 IC) enable SM Solder Not Installed
JU58 Data regeneration SM Solder Not Installed
JU59 PLL calibration reference SM Solder Not Installed
JU60 U4 or U4A select SM Solder Not Installed
4.5 TS-64 MOD1 Jumper Settings - (If installed)
Table 4-5 CTCSS Jumper Settings
REF.
DESIG. DESCRIPTION DEFAULT
POSITION
JP1-JP6 CTCSS Tone Frequency Select *
JP7 RX Audio Mute Polarity (Installed: Mute = Open, Not Installed: Mute = Ground) Installed
JP8-JP10 TX Time-Out-Timer Interval Select *
JP11 Hang-Up/Busy-Input Configure (Installed = Busy-Input, Not Installed = Hang-Up Input) Not Installed
Note: Refer to TS-64 Instruction Sheet for configuration details.
4.6 4-Level Modulation Bit Pattern
Table 4-6 4-Level Modulation Bit Pattern
J1-PIN1
(BIT 0) J1-PIN2
(BIT 1) DEVIATION
SETTING
0 0 - 4800 Hz
0 1 - 1600 Hz
1 1 + 1600 Hz
1 0 + 4800 Hz
4.7 Receiver IF / Audio PCB Jumper Settings
Table 4-9 Receiver IF / Audio PCB Jumper Settings
JUMPER POSITION
JU5 Short
JU25 Short
JU37 Open
Note: All other jumper settings as per the factory defaults.
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4-6 CI-PM-3 Paging Modulator Instruction Manual
4.8 Transmitter Audio Processor Jumper Settings
Figure 4-1 Transmitter Audio Processor V1.6 Jumper Settings
JU28
JU34
JU35 JU38 JU1
JU8 JU27
JU6
100nF
JU9
JU11
JU15
CIPM3M6A
Table 4-7 Transmitter Audio Processor V1.6 Jumper Settings
JUMPER POSITION JUMPER POSITION
JU1 Y JU15 Open
JU6 (VHF) Replaced with 100nF JU27 Y
JU6 (UHF) Short JU28 Y
JU8 Short JU34 Y
JU9 Open JU35 Y
JU11 Open JU38 Y
JU10 Short
Note: All other jumper settings as per the factory defaults.
Figure 4-2 Transmitter Audio Processor V1.8 Jumper Settings
JU34
JU38
JU35 JU37
JU5
JU28 JU15
JU9
JU11
JU8
JU1
JU27
JU6
100nF
CIPM3M7A
Table 4-8 Transmitter Audio Processor V1.8 Jumper Settings
Jumper Balanced
I/P Subtone I/P
1 / 2 Description
JU1 OUT OUT Direct Modulation Circuits Power Source Select
JU2 OUT OUT MT-2 Deviation Enable (MT-2 Transmitters)
JU3 OUT OUT Microphone Preamplifier Flat Response
JU4 OUT IN Subtone Input 2 Audio Path Select
JU5 OUT OUT / Y Auxiliary Input Enable (DC Or AC Coupled)
JU6 IN(UHF) IN(UHF) Processed Audio Path Enable (Limited And Filtered). Replace with a
100nF capacitor for VHF
JU7 OUT OUT Unprocessed Auxiliary Audio Path Enable (Unfiltered)
JU8 IN IN Audio Output DC Coupled
JU9 OUT OUT Balanced Input Pre-emphasis Response Enable
JU10 IN OUT Balanced Input Flat Audio Response Enable
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CI-PM-3 Paging Modulator Instruction Manual 4-7
JU11 Y OUT Balanced Input To Auxiliary Audio Circuit Enable
JU12 OUT OUT Tone/Digital Input To Auxiliary Audio Circuit Enable
JU13 OUT OUT / IN Direct Modulation Input To Auxiliary Audio Circuit Enable
JU14 OUT OUT Auxiliary Input Pre-emphasis Response Enable
JU15 OUT OUT / IN Auxiliary Input Flat Audio Response Enable
JU16 OUT IN / OUT Subtone Input 1 Audio Path Select
JU17 OUT OUT MT-2 Temperature Compensation Bypass
JU18 OUT OUT Continuous Data Mode Selection
JU19 X X Audio Switches Power Source Select (X=Continuous, Y=Switched)
JU20 Y Y Q2 Power Source Select (Y=Continuous, X=Switched)
JU21 Y Y Bilateral Switch Power Source Select (Y=Continuous, X=Switched)
JU22 X X Audio Output To Splatter Filter
JU23 OUT OUT / IN Direct Modulation Input To Subtone 2 Enable
JU24 OUT OUT Splatter Filter Response Select
JU25 OUT OUT Splatter Filter Response Select
JU26 OUT OUT Splatter Filter Response Select
JU27 Y Y Direct Modulation Input Audio Path Select
JU28 Y Y Amplified Direct Modulation Bypass
JU29 OUT OUT Amplified Direct Modulation Input DC Coupled Enable
JU30 OUT OUT Amplified Direct Modulation Audio Path Select
JU31 OUT OUT Audio Output AC-Coupled (MT-3 Synthesized Transmitters)
JU32 OUT OUT Audio Output AC-Coupled (MT-3 Crystal Transmitters)
JU33 OUT OUT Audio Output AC-Coupled
JU34 Y Y Audio Output From Direct Modulation Circuits Select
JU35 OUT OUT Direct Modulation Output Source Select
JU36 Y OUT AGC Preamplifier Power Source Select (Y=Continuous, X=Switched)
JU37 OUT OUT Direct Modulation Output Enable
JU38 OUT OUT / X Subtone 2, DC Coupled, To Direct Modulation Output Select
JU39 OUT OUT Direct Modulation Low Input Impedance Enable
JU40 OUT OUT Microphone Preamplifier Power Enable
JU41 Not Used
JU42 OUT OUT Processed Audio Path To Direct Modulation Output
JU43 OUT OUT Bilateral Switch U9 Bypass Enable
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4-8 CI-PM-3 Paging Modulator Instruction Manual
Figure 4-3 Transmitter Audio Processor V2.3 Jumper Settings
JU8 JU35
Y
X
JU8
JU25
X
JU43
JU34
Y
JU27
JU20
Y
X
JU42
X
CIPM3M8A
Table 4-9 Transmitter Audio Processor V2.3 Jumper Settings
JUMPER POSITION DESCRIPTION
JU8 Short Audio Output DC couple
JU20 X Direct modulation input buffer ( X enabled, Y bypass )
JU21 Y Transmit audio control
JU25 X Wide/Narrow Band Switched Select (X wide )
JU27 Y Direct Modulation Input Offset Output (Y enabled, X Bypass)
JU34 Y Audio Routing ( Y enabled , X dual port)
JU42 X Modulation input bias select ( X no offset, Y offset adjust)
JU43 Short Modulation input Direct (Short) / Cap Couple (Open)
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CI-PM-3 Paging Modulator Instruction Manual 4-9
4.9 Transmitter Synthesizer Jumper Settings
Figure 4-3 VHF and (400 MHz) UHF Synthesizer Analog PCB Jumper Settings
A B
JU1
CIPM3M8
Jumper JU1 must be installed in the ‘A’ position to enable the external reference option.
Figure 4-4 VHF and (400 MHz) UHF Synthesizer Digital PCB Jumper Settings
JU2
CIPM3M10
Jumper JU2 must be installed to enable the 10MHz reference option.
Figure 4-5 800MHz and 900MHz Transmitter Synthesizer Jumper Settings
JU1
A B
CIPM3M9
Jumper JU1 must be installed in the ‘A’ position to enable the external reference option.
Bottom
View of
PCB
Bottom
View of
PCB
Top View
Of PCB
Bottom
View of
PCB
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4-10 CI-PM-3 Paging Modulator Instruction Manual
4.10 CI-PM-3 Test Points
Table 4-10 CI-PM-3 Test Points
TEST POINT DESCRIPTION
TP1 +8 Vdc Supply
TP2 +4 Vdc Supply
TP3 +5 Vdc Supply
TP4 Analog / Digital Mode (High = Digital, Low = Analog)
TP5 2 Level Data (TTL)
TP6 OCXO 9.5 Vdc Supply
TP7 Positive and Negative Edge Integrator Output
TP8 Data Delay Programmable Counter Output.
TP9 Input to Data Delay Circuitry
TP10 2 Level Data
TP11 Level Adjusted Paging Signal
TP12 OCXO Reference Adjust (nominally 2.5 Vdc)
TP13 PLL Correction Voltage
TP14 Tx A/B Direct Modulation Output
TP15 13.8 Vdc Supply Input (from Subrack)
TP16 9.5 VDC Supply Input (from Subrack)
TP17 Low Pass Filter Output
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CI-PM-3 Paging Modulator Instruction Manual 5-1
5 ILLUSTRATIONS AND SCHEMATIC DIAGRAMS
5.1 CI-PM-3 Front Panel Controls
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CI-PM-3 Paging Modulator Instruction Manual 6-1
6 PARTS LISTS
6.1 CI-PM-3 Electrical Parts List
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6-6 CI-PM-3 Paging Modulator Instruction Manual
This Page Intentionally Left Blank
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CI-PM-3 Paging Modulator Instruction Manual 7-1
7 REVISION HISTORY
Issue Issued Revised Details
3 Nov 99 N/A All prototype updates incorporated in this issue.
All previous revision history in preliminary issue 3 (Pre3).
Jan 02 New CI-PM-3 version to accommodate multiple footprints for
U4
( AD9901 ) , and incorporate changes to the reference input
circuit
( MMIC removed ).
4 Jan 02 New Issue, incorporates all changes since release of Issue 3.
4 A Dec 02 Correct component layout (bottom CIPM3M4E)
- TP14 & TP15 locations corrected
- JU56 designation removed
DANIELS
ELECTRONICS LTD.
TM
MT-3 RADIO SYSTEMS
UHF TRANSMITTER
INSTRUCTION
MANUAL
UT-3 896 - 960 MHz
Covers models:
UT-3/900-SWB3, UT-3/935-SWB3, UT-3/950-SWB3,
UT-3/900-SNB3, UT-3/935-SNB3, UT-3/950-SNB3.
Copyright © 1998 Daniels Electronics Ltd. All rights reserved. No part of this publication may be
reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic,
mechanical, photocopying, recording or otherwise, without the prior written consent of Daniels
Electronics Ltd.
DE™ is a registered trademark of Daniels Electronics Ltd. registered in the United States Patent
and Trademark Office.
Issue: 5 Previous Issue: 4
Issue Date: December 98 Previous Issue Date: April 97 Daniels Electronics Ltd.
Printing Date: Month Year Victoria, BC
Part No.: IM26-UT3900S PRINTED IN CANADA
DE DANIELS
ELECTRONICS
ii UHF Transmitter Instruction Manual UT-3 896 - 960 MHz
Reviewed By:
Quality Assurance:
Larry Freeman
_________________
Name Signature Date
NOTE:
The user's authority to operate this equipment could be revoked through any
changes or modifications not expressly approved by Daniels Electronics Ltd.
The design of this equipment is subject to change due to continuous
development. This equipment may incorporate minor changes in detail from the
information contained in this manual.
DE DANIELS
ELECTRONICS
UHF Transmitter Instruction Manual UT-3 896 - 960 MHz iii
TABLE OF CONTENTS
Page
1 GENERAL..................................................................................................................1-1
1.1 Introduction.....................................................................................................1-1
1.2 Manual Organization.......................................................................................1-1
1.3 UT-3 896 - 960 MHz Transmitter Family Models..........................................1-2
1.4 Performance Specifications.............................................................................1-2
1.4.1 General................................................................................................1-2
1.4.2 Audio Specifications ...........................................................................1-4
1.4.3 Physical Specifications........................................................................1-5
2 SYSTEM OVERVIEW...............................................................................................2-1
2.1 Transmitter Operation.....................................................................................2-1
2.2 Frequency Selection........................................................................................2-2
2.3 Transmitter Assembly and Adjustment............................................................2-3
2.3.1 Complete Transmitter Alignment.........................................................2-4
2.3.2 Output Power Adjustment...................................................................2-4
2.3.3 Deviation Setting.................................................................................2-4
2.3.4 Setting RF Alarm Thresholds..............................................................2-4
2.4 Recommended Test Equipment List................................................................2-5
2.5 Repair Note.....................................................................................................2-5
2.6 Printed Circuitboard Numbering Convention..................................................2-5
3 ILLUSTRATIONS.....................................................................................................3-1
3.1 MT-3 Transmitter Front Panel ........................................................................3-1
3.2 MT-3 Transmitter Case - Exploded View........................................................3-2
4 PARTS LIST ..............................................................................................................4-1
5 REVISION HISTORY ...............................................................................................5-1
MODULE MANUALS
Transmitter Main Board Instruction Manual ........................................ IM20-MT3TXMN
UHF Amplifier Instruction Manual UT-3 806 - 960 MHz ...............IM25-UT38900AMP
Low Current Synthsizer Instruction Manual OS(R/T)-3 132-960 MHz ...........IM11-OS3
UHF Transmitter Channel Designation Table UT-3 896 - 960 MHz...IM16-URT3900CT
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iv UHF Transmitter Instruction Manual UT-3 896 - 960 MHz
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UHF Transmitter Instruction Manual UT-3 896 - 960 MHz 1-1
1 GENERAL
1.1 Introduction
The UT-3 896 - 960 MHz transmitter is a low power, synthesized, FM transmitter, capable of
operation in 6.25 KHz channels. The transmitter operates in three frequency bands:
896 - 902 MHz, 928 - 935 MHz, and 935 - 960 MHz and power output is adjustable from 0.5W to
3.0W. A modular design allows each of the transmitter's modules: OS-3 896 - 960 MHz
synthesizer, UT-3 800/900 amplifier, MT-3 audio processor, and MT-3 transmitter main board to
be individually assembled and tested. This facilitates construction, maintenance, as well as
troubleshooting procedures. The synthesizer module can be programmed to have up to 16 channels
exclusive to one frequency band (896 - 902 MHz, 928 - 935 MHz, or 935 - 960 MHz) making the
UT-3 an extremely versatile transmitter. In addition, the UT-3 896 - 960 MHz transmitter is
capable of standard modulation or low frequency modulation.
The UT-3 896 - 960 MHz transmitter is designed to interface with Daniels Electronics' MT-3
Repeater System while maintaining MT-2 System compatibility. Both repeater systems are
characterized by dependable, low maintenance performance under the most severe environmental
conditions.
1.2 Manual Organization
The organization of this manual reflects the modular makeup of the UT-3 product line. Each
module is fully described within its respective submanual, all of which are contained within this
document. In general, each submanual contains:
1. A functional description and specification summary,
2. A detailed technical description (Theory of Operation) and
3. Assembly, setup and alignment procedures relevent to that particular module.
The module manuals are as follows.
Note: material presented in a given "sub-manual" may include information related to other module
versions not directly appllicable to the 896 - 960 MHz Transmitter family (eg, the Low Current
Synthesizer Instruction Manual OS(R/T)-3 covers models from 132 MHz to 960 MHz).
UHF Transmitter Instruction Manual UT-3 896 - 960 MHz: This manual provides an overview of
the complete transmitter, manual organization and assembly in terms of the other modules.
MT-3 Transmitter Main Board Instruction Manual: This manual pertains to the audio processor
module, transmitter Main Board and Front Panel Board. Most of the user selectable options are
accessed within the Transmitter Main Board module, including channel selection. Since all external
connections (including power and signal lines) are made to the Transmitter Main Board, most of the
material pertaining to transmitter operation and installation is found here.
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ELECTRONICS
1-2 UHF Transmitter Instruction Manual UT-3 896 - 960 MHz
UHF Amplifier Instruction Manual UT-3 806 - 960 MHz : The amplifier module provides the
final stages of RF power amplification and harmonic filtering for the transmitter. This manual is
intended primarily as a reference since the amplifier module is adjusted at the factory.
Low Current Synthesizer Instruction Manual OS(R/T)-3 132 - 960 MHz: This manual pertains to
the enhanced synthesizer module.
UHF Rx/Tx Channel Designation Table UT-3 896 - 960 MHz: This document relates operating
frequency to the transmitter channel number (see section 2.2).
1.3 UT-3 896 - 960 MHz Transmitter Family Models
The UT-3 896 - 960 MHz line of transmitters has a single RF power output rating of 3.0 Watt, with
wide or narrow band FM (12.5 kHz or 25 kHz channels) and employs synthesizer based frequency
generation. The six basic (i.e. no options added) band specific models of the transmitter are as
follows:
• UT-3/900-SNB3 - synthesized, 896 - 902 MHz band, 12.5 kHz channels, 0.5 - 3.0 Watt
• UT-3/935-SNB3 - synthesized, 928 - 935 MHz band, 12.5 kHz channels, 0.5 - 3.0 Watt
• UT-3/950-SNB3 - synthesized, 935 - 960 MHz band, 12.5 kHz channels, 0.5 - 3.0 Watt
• UT-3/900-SWB3 - synthesized, 896 - 902 MHz band, 25 kHz channels, 0.5 - 3.0 Watt
• UT-3/935-SWB3 - synthesized, 928 - 935 MHz band, 25 kHz channels, 0.5 - 3.0 Watt
• UT-3/950-SWB3 - synthesized, 935 - 960 MHz band, 25 kHz channels, 0.5 - 3.0 Watt
The transmitter models are very similar and the transmitters' band of operation is determined by
select components in the synthesizer and amplifier.
1.4 Performance Specifications
1.4.1 General
Type: MT-3 Series Transmitter.
Compatibility: MT-2 Series and MT-3 Series Radio Systems.
Frequency Range: 896 - 960 MHz
R.F. Power Output: Adjustable: 0.5W to 3.0W.
Modulation: 11/16K0F3EJN (Frequency Modulation).
Channel Spacing: 12.5 kHz or 25 kHz.
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UHF Transmitter Instruction Manual UT-3 896 - 960 MHz 1-3
Frequency Generation: Synthesized (internal plug-in module: 2 bands).
Reference Frequency: 9.600000 MHz.
Channel Selection: In 6.25 kHz increments selected through four internal BCD
rotary switches. Preset capability for 16 channel memory
selectable through external control.
Frequency Stability: Standard: ±1ppm -30°C to +60°C.
Optional: ±1ppm -40°C to +60°C.
Optional: High stability external reference.
System Impedance: 50 Ω; Type N (Standard).
Duty Cycle: 100%; Continuous operation +60°C
Spurious Emissions: More than -80dB below carrier.
Hum and Noise Level: 45 dB (300 Hz to 3.4 kHz).
Front Panel Control: NORM (repeat mode), OFF, and KEY TX (Tx on).
PTT Activation: • Active to ground with or without time-out timer;
• Microphone activated with or without time-out timer;
• Front Panel switch:
KEY TX - without time-out timer
NORM - with or without time-out timer.
• Isolated (optional relay) with or without time-out timer.
PTT Time-Out-Timer: Selectable 1 second to 8 hours (factory set 5 minutes).
Transmitter Mismatch Protection: 20:1 VSWR at all phase angles. Protected by internal ferrite
Isolator
Transmitter Alarm: Forward power sense and reverse VSWR;
• open collector output (separate or 'OR'ed configuration);
• linear output (separate lines only).
Transmit Current: 1.8 Amps at 3 Watts RF Power Output.
Standby Current and Rise time: 95% RF power, 95% system deviation within;
50 ms: typically 7 mA (Mode 1),
25 ms: typically 50 mA (Mode 2),
10 ms: typically 75 mA (Mode 3).
Operating Temperature Range: -30˚C to +60˚C (Optional: -40˚C to +60˚C).
Operating Humidity: 95% R.H. (Non-condensing) at +25°C.
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1-4 UHF Transmitter Instruction Manual UT-3 896 - 960 MHz
DOC Type Approval: RSS119 142 194 305
RSS122 142 221 131
FCC Type Acceptance: H4JUT-3-900-SN03 (896-902 MHz, narrow band)
H4JUT-3-900-SW03 (896-902 MHz, wide band)
H4JUT-3-930-SN03 (928-935 MHz, narrow band)
H4JUT-3-930-SW03 (928-935 MHz, wide band)
H4JUT-3-950-SN03 (935-960 MHz, narrow band)
H4JUT-3-950-SW03 (935-960 MHz, wide band)
1.4.2 Audio Specifications
Audio Input: Balanced 600 ohm or unbalanced (optional).
Input level sensitivity, -25 dBm to 0 dBm.
Audio Response: Pre-emphasis (6 dB per octave); +0.5 to -2.0 dB from 300 Hz
to 3 kHz;
Flat Audio Response: +1 to -2 dB from 100 Hz to 3 kHz.
Audio Deviation: Preset to ±1.5 kHz or ±3.0 kHz with a 1 kHz tone;
(capable ±2.5 kHz or ±5.0 kHz).
Subtone Audio Input 1: 0.5 Vpp at 200 Hz for ±500 Hz deviation (internally
adjustable).
Subtone Audio Input 1 Freq range: 60 Hz to 300 Hz.
Subtone Audio Input 2: 0.5 Vpp at 100 Hz for ±500 Hz deviation (internally
adjustable).
Subtone Audio Input 2 Freq range: DC to 150 Hz.
Direct Modulation Input: 0.5 Vrms at 1 kHz or ±3 kHz deviation.
Direct Modulation Freq range: DC to 5 kHz.
Audio Distortion: Less than 2.5% THD; 1 kHz tone at 1.5 kHz or 3 kHz
deviation (-40°C to +60°C).
Hum and Noise: Better than 40 dB (test receiver band limited: 400 Hz to 30
kHz).
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UHF Transmitter Instruction Manual UT-3 896 - 960 MHz 1-5
1.4.3 Physical Specifications
Physical Dimensions: Width: Height: Depth:
7.1 cm (2.8 in) 12.8 cm (5.05 in) 19 cm (7.5 in)
Module Weight: 1.5 kg (3.3 lbs)
Corrosion Prevention: Anodized aluminum construction. Stainless steel hardware.
Selectively conformal coated glass epoxy 2 and 4 layer printed
circuitboards. Gold plated module connectors.
Module Design: Compact Eurostandard modular design. Plug-in modules mate
with Daniels standard M3 repeater subrack. Subracks /
modules comply with IEEE 1101, DIN 41494 and IEC 297-3
(mechanical size / modular arrangement).
External Connections: RF Connection: type N connector located on the transmitter
module front panel. Motherboard Connections (Audio, Power,
and Control) are made through a 48 pin, gold plated, type F
connector on the rear of the transmitter module. User
connection made through mated "mother board" assembly of
the repeater subrack. Type F standard connector complies with
DIN 41612 Level 2 (200 mating cycles, 4 day 10 ppm SO2 gas
test with no functional impairment and no change in contact
resistance).
Handle Text Colour: Green.
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UHF Transmitter Instruction Manual UT-3 896 - 960 MHz 2-1
2 SYSTEM OVERVIEW
2.1 Transmitter Operation
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UHF Transmitter Instruction Manual UT-3 896 - 960 MHz 3-1
3 ILLUSTRATIONS
3.1 MT-3 Transmitter Front Panel
UT3900M1
ON / OFF SWITCH
TYPE N RF
OUTPUT JACK
SMA REFERENCE
INPUT JACK
TRANSMIT INDICATOR LED
TRANSMITTER
MODEL IDENTIFIER
FACTORY SET
OPERATING
FREQUENCY
MICROPHONE
CONNECTOR
TRANSMITTER
TX
REFERENCE
INPUT
DANIELS
ELECTRONICS LTD.
OFF
NORM
KEY TX
MIC
RF OUT
FREQUENCY (MHz)
33.25000
MADE IN CANADA
UT-3/950-SWB3
MADE IN CANADA
MADE IN CANADA
GREEN TEXT
FREQUENCY (MHz)
951.0000
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3-2 UHF Transmitter Instruction Manual UT-3 896 - 960 MHz
3.2 MT-3 Transmitter Case - Exploded View
3 FINGER GASKET (2)
A
A
A
A
B
B
B
B
MT3TXM2B
Transmitter Case Removal:
1. Remove screws A (four M3x8mm).
2. Remove screws B (four M5x8mm).
3. Hold front panel and pull case.
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UHF Transmitter Instruction Manual UT-3 896 - 960 MHz 4-1
4 PARTS LIST
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UHF Transmitter Instruction Manual UT-3 896 - 960 MHz 5-1
5 REVISION HISTORY
ISSUE DATE DESCRIPTION AND (REASON)
5 May 98 •Manual formatted to modular style. All previous revision history in
issue 4.
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5-2 UHF Transmitter Instruction Manual UT-3 896 - 960 MHz
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DANIELS
ELECTRONICS LTD.
TM
MT-3 RADIO SYSTEMS
TRANSMITTER
MAIN BOARD
INSTRUCTION MANUAL
Covers: Version 1.7 of the Transmitter Main Board
Version 1.6 & 1.8 of the FM Audio Processor Board
Copyright © 1998 Daniels Electronics Ltd. All rights reserved. No part of this publication may be
reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic,
mechanical, photocopying, recording or otherwise, without the prior written consent of Daniels
Electronics Ltd.
DE™ is a registered trademark of Daniels Electronics Ltd. registered in the United States Patent
and Trademark Office.
Issue: 3 Previous Issue: 2
Issue Date: November 98 Previous Issue Date: May 98 Daniels Electronics Ltd.
Printing Date: NA Victoria, B.C.
Part No.: IM20-MT3TXMN PRINTED IN CANADA
DE DANIELS
ELECTRONICS
ii Transmitter Main Board Instruction Manual
Reviewed By:
Quality Assurance:
Larry Freeman
_________________
Name Signature Date
NOTE:
The user's authority to operate this equipment could be revoked through any
changes or modifications not expressly approved by Daniels Electronics Ltd.
The design of this equipment is subject to change due to continuous
development. This equipment may incorporate minor changes in detail from the
information contained in this manual.
DE DANIELS
ELECTRONICS
Transmitter Main Board Instruction Manual iii
TABLE OF CONTENTS
Page
1 GENERAL .................................................................................................................. 1-1
1.1 Introduction.................................................................................................... 1-1
1.2 Performance Specifications............................................................................ 1-1
1.2.1 General............................................................................................... 1-1
1.2.2 Audio Specifications .......................................................................... 1-2
2 THEORY OF OPERATION....................................................................................... 2-1
2.1 Transmitter Main Board................................................................................. 2-1
2.1.1 General............................................................................................... 2-1
2.1.2 Transmitter Push-To-Talk.................................................................. 2-1
2.1.2.1 Microphone PTT.................................................................... 2-1
2.1.2.2 PTT With Time-Out-Timer.................................................... 2-2
2.1.2.3 PTT No Time-Out-Timer....................................................... 2-2
2.1.2.4 Optional Relay ....................................................................... 2-2
2.1.2.5 PTT Output............................................................................ 2-3
2.1.2.6 PTT Voltage Switching .......................................................... 2-3
2.1.2.7 Transmitter Standby Modes................................................... 2-3
2.1.3 Audio Circuits.................................................................................... 2-4
2.1.3.1 Microphone Audio................................................................. 2-5
2.1.3.2 Received Audio ...................................................................... 2-5
2.1.4 Channel Selection............................................................................... 2-5
2.1.4.1 Synthesized Transmitter......................................................... 2-5
2.1.4.2 Crystal Controlled Transmitter............................................... 2-6
2.1.5 Amplifier Circuits............................................................................... 2-6
2.1.6 Time-Out-Timer Circuitry.................................................................. 2-6
2.2 MT-3 Front Panel Board................................................................................ 2-8
2.3 MT-3 Audio Processor (Version 1.6) ............................................................ 2-8
2.3.1 General............................................................................................... 2-8
2.3.2 Power Requirements .......................................................................... 2-8
2.3.3 Audio Processor Turn-on Time.......................................................... 2-9
2.3.4 Audio Processor Signals.................................................................... 2-9
2.3.4.1 Audio Processor Outputs....................................................... 2-9
2.3.4.2 Audio Processor Modulation Output ..................................... 2-10
2.3.4.3 Audio Processor Low Frequency / Direct Mod. Output......... 2-10
2.3.4.4 Audio Processor Inputs.......................................................... 2-10
2.3.4.5 Audio Processor Microphone Input....................................... 2-11
2.3.4.6 Audio Processor Balanced Input............................................ 2-11
2.3.4.7 Audio Processor Auxiliary Input............................................ 2-11
2.3.4.8 Audio Processor Subtone Inputs............................................ 2-11
2.3.4.9 Audio Processor Direct Modulation Input ............................. 2-12
2.4 MT-3 Audio Processor (Version 1.8) ............................................................ 2-12
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iv Transmitter Main Board Instruction Manual
2.4.1 General............................................................................................... 2-12
2.4.2 Power Requirements .......................................................................... 2-12
2.4.3 Audio Processor Turn-on Time.......................................................... 2-13
2.4.4 Audio Processor Signals.................................................................... 2-13
2.4.4.1 Audio Processor Outputs....................................................... 2-13
2.4.4.2 Audio Processor Modulation Output ..................................... 2-14
2.4.4.3 Audio Processor Low Frequency / Direct Mod. Output......... 2-14
2.4.4.4 Audio Processor Inputs.......................................................... 2-14
2.4.4.5 Audio Processor Microphone Input....................................... 2-15
2.4.4.6 Audio Processor Balanced Input............................................ 2-15
2.4.4.7 Audio Processor Auxiliary Input............................................ 2-15
2.4.4.8 Audio Processor Subtone Inputs............................................ 2-15
2.4.4.9 Audio Processor Direct Modulation Input ............................. 2-16
2.5 Low Frequency Modulation........................................................................... 2-16
3 TRANSMITTER ALIGNMENT ................................................................................ 3-1
3.1 General........................................................................................................... 3-1
3.2 Repair Note.................................................................................................... 3-1
3.3 Printed Circuitboard Numbering Convention................................................. 3-1
3.4 Recommended Test Equipment List............................................................... 3-1
3.5 Standard Factory Settings and Jumper Configuration.................................... 3-2
3.5.1 MT-3 Transmitter Board Factory Configuration................................ 3-2
3.5.2 MT-3 Audio Processor Factory Configuration .................................. 3-3
3.6 MT-3 Transmitter Board Alignment............................................................... 3-4
3.6.1 General............................................................................................... 3-4
3.6.2 MT-3 Transmitter Board Test Points ................................................. 3-5
3.7 Module Installation and Removal................................................................... 3-5
3.8 MT-3 Audio Processor Alignment................................................................. 3-6
3.8.1 General............................................................................................... 3-6
3.8.2 MT-3 Audio Processor Standard Deviation Adjustment .................... 3-6
3.9 Standard Factory Settings and Jumper Configuration.................................... 3-8
3.9.1 MT-3 Audio Processor Factory Configuration (Version 1.8) ............ 3-8
3.10 MT-3 Audio Processor Alignment (Version 1.8)........................................... 3-10
3.10.1 General............................................................................................... 3-10
3.10.2 MT-3 Audio Processor Standard Deviation Adjustment .................... 3-10
3.11 Low Frequency Modulation Configuration.................................................... 3-11
3.11.1 MT-3 Transmitters............................................................................. 3-11
3.11.2 MT-3 Transmitter Audio Processors.................................................. 3-12
3.11.3 Synthesizer and Crystal Controlled Oscillator.................................... 3-13
3.11.4 Tuning the Transmitter....................................................................... 3-14
4 TRANSMITTER INTERCONNECT PIN DEFINITIONS ....................................... 4-1
5 ILLUSTRATIONS AND SCHEMATIC DIAGRAMS.............................................. 5-1
5.1 Transmitter Block Diagram............................................................................ 5-1
5.2 Transmitter Main Board Electrical Assembly................................................. 5-3
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Transmitter Main Board Instruction Manual v
5.2.1 Transmitter Main Board Top Side Component Layout ...................... 5-3
5.2.2 Transmitter Main Board Bottom Side Component Layout................. 5-4
5.2.3 Transmitter Main Board Schematic Diagram ..................................... 5-5
5.3 Front Panel Board.......................................................................................... 5-6
5.3.1 Front Panel Board Component Layout............................................... 5-6
5.3.2 Front Panel Board Schematic............................................................. 5-7
5.4 Audio Processor Electrical Assembly (Version 1.6)....................................... 5-8
5.4.1 Audio Processor Component Layout ................................................. 5-8
5.4.2 Audio Processor Schematic Diagram................................................. 5-9
5.5 Audio Processor Electrical Assembly (Version 1.8)....................................... 5-10
5.5.1 Audio Processor Component Layout ................................................. 5-10
5.5.2 Audio Processor Schematic Diagram................................................. 5-11
5.5.3 TX Time-Out-Timer Electrical Assembly........................................... 5-12
5.5.3.1 TX Time-Out-Timer Component Layout................................ 5-12
5.5.3.2 TX Time-Out-Timer Schematic Diagram ............................... 5-12
6 PARTS LISTS............................................................................................................. 6-1
6.1 Transmitter Main Board Parts List................................................................. 6-1
6.1.1 Transmitter Main Board Electrical Parts List...................................... 6-1
6.1.2 Transmitter Main Board Mechanical Parts List.................................. 6-3
6.1.3 MT-3 Front Panel Board Electrical Parts List .................................... 6-4
6.2 MT-3 Audio Processor Parts List (Version 1.7) ............................................ 6-4
6.2.1 MT-3 Audio Processor Electrical Parts List (Version 1.6)................. 6-4
6.3 MT-3 Audio Processor Parts List (Version 1.8) ............................................ 6-6
6.3.1 MT-3 Audio Processor Electrical Parts List (Version 1.8)................. 6-6
7 REVISION HISTORY................................................................................................ 7-1
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vi Transmitter Main Board Instruction Manual
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Transmitter Main Board Instruction Manual 1-1
1 GENERAL
1.1 Introduction
The MT-3 Transmitter Main Board integrates the MT-3 Front Panel Board, MT-3 Audio
Processor, Synthesizer or Crystal Controlled Oscillator module, and Amplifier module together to
comprise a MT-3 series transmitter (see section 5.1: MT-3 Transmitter Block Diagram). The Front
Panel Board and the Audio Processor are soldered directly to the Transmitter Main Board while the
Amplifier and the Synthesizer or Crystal Controlled Oscillator module are frequency band sensitive,
plug-in modules. Circuitry and jumpers on the Transmitter Main Board control the operation of the
modules as well as the overall operation of the MT-3 transmitter. Power and signal connections are
made through the 48 pin type 'F' connector on the rear of the Transmitter Main Board where they
are then routed to the other MT-3 modules. The front and rear panels are attached to the
Transmitter Main Board and together with the extruded aluminum shell, form the transmitter
enclosure.
1.2 Performance Specifications
1.2.1 General
Type: MT-3 Series Transmitter
Compatibility: MT-3 Series Amplifier, OC-3 Crystal Controlled Oscillator
module, OS-3 and OS-3H Frequency Synthesizer modules.
Modulation: 11K0F3E or 16K0F3E (Frequency Modulation).
Operating Temperature Range: -30˚C to +60˚C, optional -40˚C to +60˚C temperature test.
Operating Humidity: 95% RH (non-condensing) at +25°C.
Operating Voltage: +9.5 Vdc Regulated. +13.8 Vdc Nominal (11 - 16 Vdc).
Front Panel Controls: NORM (repeat mode), OFF, and KEY TX (Tx on).
PTT Activation: • Active to ground with or without time-out-timer;
• Microphone activated with or without time-out-timer;
• Front Panel switch: KEY TX - without time-out-timer;
• NORM - with or without time-out-timer.
• Isolated (optional relay) with or without time-out-timer.
PTT Time-Out-Timer: Selectable from 1 sec. to 8 hrs. (Factory Default: 5 min.).
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1-2 Transmitter Main Board Instruction Manual
1.2.2 Audio Specifications
Audio Input: Balanced 600 ohm or unbalanced (optional).
Input level sensitivity, -25 dBm to 0 dBm.
Audio Response: Pre-emphasis (6 dB per octave); +0.5 to -2.0 dB
from 300 Hz to 3 kHz;
Flat Audio Response: +1 to -1 dB from 100 Hz to 3 kHz.
Audio Deviation: Preset to ±1.5 kHz (Narrow Band) or ±3.0 kHz (Wide Band)
with a 1 kHz tone (capable ±2.5 kHz or ±5.0 kHz).
Subtone Audio Input 1: 0.5 Vpp at 200 Hz for ±500 Hz deviation
(internally adjustable).
Subtone Audio Input 1 Frequency range: 60 Hz to 300 Hz.
Subtone Audio Input 2: 0.5 Vpp at 100 Hz for ±500 Hz deviation
(internally adjustable).
Subtone Audio Input 2 Frequency range: DC to 150 Hz.
Direct Modulation Input: 0.5 Vrms at 1 kHz or ±3 kHz deviation.
Direct Modulation Frequency range: DC to 5 kHz.
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ELECTRONICS
Transmitter Main Board Instruction Manual 2-1
2 THEORY OF OPERATION
2.1 Transmitter Main Board
2.1.1 General
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Transmitter Main Board Instruction Manual 3-1
3 TRANSMITTER ALIGNMENT
3.1 General
Transmitter alignment is simplified by using an M-3 Subrack, SM-3 System Monitor, and RF
extender cable to provide transmitter power and signal interconnection. Alternatively, +9.5 Vdc and
+13.8 Vdc may be applied directly to a transmitter module through positive connection for the
+9.5 Vdc to pins B6 and Z6, for the +13.8 Vdc to pins B2 and Z2, and negative connection to pins
B30, Z30, B32, and Z32. Transmitter balanced audio (600 Ω) is available at pins B18 and Z18.
3.2 Repair Note
MT-3 Transmitter modules are mainly made up of surface mount devices which should not be
removed or replaced using an ordinary soldering iron. Removal and replacement of surface mount
components should be performed only with specifically designed surface mount rework and repair
stations complete with ElectroStatic Dissipative (ESD) protection.
When removing Surface Mount Solder Jumpers, it is recommended to use solder braid in place of
manual vacuum type desoldering tools when removing jumpers. This will help prevent damage to
the circuitboards.
3.3 Printed Circuitboard Numbering Convention
To ease troubleshooting and maintenance procedures, Daniels Electronics Limited has adopted a
printed circuitboard (PCB) numbering convention in which the last two digits of the circuitboard
number represent the circuitboard version. For example:
• PCB number 43-912010 indicates circuitboard version 1.0;
• PCB number 50002-02 indicates circuitboard version 2.0.
All PCB's manufactured by Daniels Electronics are identified by one of the above conventions.
3.4 Recommended Test Equipment List
Alignment of the complete transmitter requires the following test equipment or its equivalent. It is
assumed that any adjustment of the Transmitter Main Board will also involve the other modules.
Dual Power Supply: Regulated +9.5 Vdc at 2 A.
Regulated +13.8 Vdc at 2 A - Topward TPS-4000
Oscilloscope / Multimeter: Fluke 97 Scopemeter
Current Meter: Fluke 75 multimeter
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3-2 Transmitter Main Board Instruction Manual
Radio communications test set : Marconi Instruments 2955R
VSWR 3:1 mismatch load: JFW 50T-035-3.0:1
Alignment Tool: Johanson 4192
It is recommended that the radio communications test set be frequency locked to an external
reference (WWVH, GPS, Loran C) so that the high stability oscillator may be accurately set to
within its ±1 ppm frequency tolerance.
3.5 Standard Factory Settings and Jumper Configuration
Standard factory settings and the associated jumper configuration for each module of the MT-3
series transmitter are given below.
3.5.1 MT-3 Transmitter Board Factory Configuration
The MT-3 Transmitter Main Board is factory configured as follows:
• Transmitter standby mode 1 (lowest standby current consumption).
• Receiver squelched, de-emphasized audio amplifier disabled.
• Optional relay not installed.
• Separate amplifier power sense outputs.
The corresponding jumper settings are:
• Jumper J2: 'x' position Optional relay configuration
• Jumper J3: no connection Optional relay configuration
• Jumper J4: 'y' position Optional relay configuration
• Jumper J6: not installed Transmitter standby mode select - Mode 1
• Jumper J7: 'y' position Audio processor standby mode select
• Jumper J9: not installed Receiver audio ac/dc input coupling
• Jumper J12: not installed Amplifier power sense output configuration
• Jumper J13: 'x' position Amplifier power sense output configuration
• Jumper J14: 'x' position Amplifier power sense output configuration
• Jumper J15: 'x' position Amplifier power sense output configuration
• Jumper J16: 'x' position Microphone configuration
• Jumper J17: installed Microphone output line
• Jumper J18: 'y' position Synthesizer or crystal module standby mode select
• Jumper J19: 'x' position 600Ω audio transformer enable. 'y' position disables
• Jumper J20: 'x' position 600Ω audio transformer enable. 'y' position disables
• Jumper J21: not installed +8 Vdc audio processor supply bypass
• Jumper J22: 'x' position 600Ω audio transformer enable. 'y' position disables
• Jumper J23: 'x' position 600Ω audio transformer enable. 'y' position disables
• Jumper J24: installed Subtone #2 output enable
• Jumper J25: 'x' position Audio output enable
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Transmitter Main Board Instruction Manual 3-3
• Jumper J26: installed Time-Out-Timer Timing resistor select.
• Jumper J27: not installed Time-Out-Timer Timing resistor select.
• Jumper J28: not installed Time-Out-Timer Timing period output select.
• Jumper J29: installed Time-Out-Timer Timing period output select.
• Jumper J31: installed Time-Out-Timer Timing period output select.
• Jumper J32: not installed Time-Out-Timer Timing period output select.
• Jumper J33: installed Time-Out-Timer input enable
• Jumper J34: installed Time-Out-Timer power enable
• Jumper J35: installed Time-Out-Timer output enable
Note: Jumpers J1, J5, J8, J10, J11 designations not used
3.5.2 MT-3 Audio Processor Factory Configuration (Version 1.6)
The MT-3 Audio Processor is factory configured as follows:
• Maximum Deviation: ±2.5 kHz (12.5 kHz or 15 kHz channel),
±5.0 kHz (25 kHz or 30 kHz channel).
• Microphone Input: 1 kHz signal at -10 dBm gives ±50% maximum deviation,
1 kHz signal compression set at ±60% maximum deviation.
• Audio Balanced Input: Enabled - pre-emphasis response,
1 kHz tone at -8 dBm gives ±60% maximum deviation.
1 kHz signal compression set at ±60% maximum deviation.
• Subtone Input 1: 100 Hz tone at -18 dBm gives ±500 Hz deviation.
• All other audio inputs:Disabled.
• Time-Out-Timer: 5 minutes ± 30 seconds.
The corresponding Audio Processor jumper settings are:
• Jumper JU1: not installed Power source select for Direct Modulation circuits.
• Jumper JU2: not installed MT-2 deviation enable (MT-2 transmitters).
• Jumper JU3: installed Microphone preamplifier power enable.
• Jumper JU4: installed Balanced audio preamplifier power enable.
• Jumper JU5: not installed Balanced audio ground enable.
• Jumper JU6: installed Processed audio path enable (limited and filtered).
• Jumper JU7: not installed Unprocessed auxiliary audio path enable (unfiltered).
• Jumper JU8: not installed Audio output DC coupled (MT-2 transmitters).
• Jumper JU9: installed Balanced input preemphasis response enable.
• Jumper JU10: not installed Balanced input flat audio response enable.
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3-4 Transmitter Main Board Instruction Manual
• Jumper JU11: not installed Balanced input to auxiliary audio circuit enable.
• Jumper JU12: not installed Tone/Digital input to auxiliary audio circuit enable.
• Jumper JU13: not installed Direct modulation input to auxiliary audio circuit enable.
• Jumper JU14: not installed Auxiliary input preemphasis response enable.
• Jumper JU15: not installed Auxiliary input flat audio response enable.
• Jumper JU16: not installed Subtone input 2 audio path select.
• Jumper JU17: installed MT-2 Temperature compensation bypass.
• Jumper JU18: not installed Continuous data mode selection.
• Jumper JU19: 'y'position Power source for audio switches.
• Jumper JU20 to JU22: not used
• Jumper JU23: not installed Direct modulation input to subtone 2 enable.
• Jumper JU24: installed Lowpass filter response select.
• Jumper JU25: installed Lowpass filter response select.
• Jumper JU26: installed Lowpass filter response select.
• Jumper JU27: not installed Direct Modulation input audio path select.
• Jumper JU28: not installed Amplified direct modulation bypass.
• Jumper JU29: not installed Amplified direct modulation input DC couple enable.
• Jumper JU30: not installed Amplified direct modulation audio path select.
• Jumper JU31: not installed Subtone 2, AC coupled,to direct modulation output enable.
• Jumper JU32: not installed Audio output AC coupled (MT-3 crystal transmitters).
• Jumper JU33: not installed Audio output AC coupled (MT-3 synthesized transmitters).
• Jumper JU34: not installed Audio output from Direct Modulation circuits select.
• Jumper JU35: not installed Direct Modulation output source select.
• Jumper JU36: 'x' position Subtone input 1 audio path select.
• Jumper JU37: not installed Summed Subtone audio to direct modulation output enable
• Jumper JU38: not installed Subtone 2, DC coupled, to direct modulation output select.
• Jumper JU39: not installed Direct Modulation low input impedance enable.
3.6 MT-3 Transmitter Board Alignment
3.6.1 General
Before proceeding with the transmitter alignment, check that the appropriate jumpers are installed.
The standard jumper configuration for the Transmitter Main Board, given in section 3.5.1, is
normally employed for transmitter alignment. In a standard configuration, the only alignment
required on the MT-3 Transmitter Main Board for a synthesized transmitter is to set the frequency
switches (FSW1, FSW2, FSW3, and FSW4) for the desired channel frequency. FSW1 is the
most significant digit of the frequency switches. The switch settings for the desired channel
frequency can be found in the channel designation tables. If the transmitter is using a crystal
control oscillator module, the switch settings are irrelevant.
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Transmitter Main Board Instruction Manual 3-5
3.6.2 MT-3 Transmitter Board Test Points
TP1: squelched, de-emphasized audio / +13.8 Vdc
TP2: microphone audio
TP3: microphone PTT WTO; inactive +9.5 Vdc, active 0 Vdc
TP4: microphone PTT NTO; inactive +9.5 Vdc, active 0 Vdc
TP5: +9.5 Vdc from backplane connector
TP6: +9.5 Vdc from front panel board
TP7: +9.5 Vdc Switched
TP8: Qualified PTT; inactive +9.5 Vdc, active 0 Vdc: activated by synthesizer
TP9: synthesizer enable; selected by J18
TP10: synthesizer bootstrap line; +5 Vdc
TP11: synthesizer PTT input; inactive +9.5 Vdc, active 0 Vdc
TP12: audio processor TOT input; inactive +9.5 Vdc, active 0 Vdc
TP13: audio processor TOT output; inactive +9.5 Vdc, active 0 Vdc
TP14: audio processor audio output
TP15: audio processor audio control line
TP16: audio processor subtone #2 output
TP17: audio processor direct modulation input
TP18: audio processor subtone #2 input
TP19: audio processor continuous +9.5 Vdc
TP20: audio processor subtone #1 input
TP21: audio processor supply +8 Vdc, selected by J7
TP22: audio processor tone/digital input
TP23: synthesizer receive data line; 0 Vdc
TP24: synthesizer transmit data line; +5 Vdc
TP25: Q1 collector; inactive 0 Vdc, active +9.5 Vdc
TP26: U2d output; inactive +9.5 Vdc, active 0 Vdc
TP27: U1a output (PTT WTO); inactive +9.5 Vdc, active 0 Vdc
TP28: U1b output (PTT NTO); inactive +9.5 Vdc, active 0 Vdc
TP29: Q6 collector / Q7 gate; inactive +9.5 Vdc, active 0 Vdc
TP30: +9.5 Vdc PTT Switched
TP31: U8 pin 1, Time-Out-Timer circuitry set input
TP32: U8 pin 2, Time-Out-Timer circuitry reset input
TP33: Audio processor balanced audio input
TP34: Audio processor balanced audio input
3.7 Module Installation and Removal
Installation of the Enhanced Synthesizer or Crystal Controlled Oscillator module is facilitated by
alignment pins on each corner of the module. When the four pins are aligned with their
corresponding hole in the Transmitter Main Board, push the module down, taking care to ensure the
connector pins on the bottom of the Synthesizer or Crystal Controlled Oscillator module are not
bent.
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3-6 Transmitter Main Board Instruction Manual
To remove the Enhanced Synthesizer or Crystal Controlled Oscillator module, simply remove the
center screw from the module lid and pull the module out. The module should be pulled straight
out so that the four alignment pins do not bend or damage the circuitboard.
The Low Power Synthesizer uses two tabs soldered to the Transmitter Main Board for mounting.
No alignment pins are used. As a result care must be taken to ensure the connector pins on the
bottom of the Synthesizer are not bent. To install the low Power Synthesizer module, remove the
two of the synthesizer side screws that correspond to the tabs on the Transmitter Main board and
install the synthesizer module taking care not to bend the pins. Replace the two side screws;
installing them through the tabs to hold the synthesizer module in place.
When removing the Low Power Synthesizer module, it is important to gently lift the synthesizer
module "straight out" in order to prevent damage to the connector pins. Remove the two side
screws holding the sinthesizer module to the tabs. Using a plastic coated lifting tool, such as a
small screwdriver with the tip covered in heat shrink material, gently lift the synthesizer module
from the Transmitter Main Board by applying pressure in a rotating fashion about four corners of
the synthesizer module. Replace the two side screws.
3.8 MT-3 Audio Processor Alignment (Version 1.6)
3.8.1 General
Verify the standard factory settings for the MT-3 Audio Processor as given in section 3.5.2 before
beginning the standard deviation adjustment procedure. If the transmitter's channel frequency
changes, the audio processor should be realigned to optimize the transmitter's performance. The
schematic diagram for the audio processor is shown in section 5.4.2 and the component layout is
shown in section 5.4.1.
3.8.2 MT-3 Audio Processor Standard Deviation Adjustment
Note: clockwise rotation of controls increases signal levels.
1 Connect the transmitter to the radio communications test set and monitor FM
deviation, distortion, and audio frequency. Before adjusting the audio deviation,
confirm that the transmitter RF output frequency is correct.
2 Connect the 600 ohm input to the incoming audio (pins B18, Z18). Set the audio
frequency to 1 kHz at the desired level of -8 dBm.
3 Increase the balance level control (R31) for maximum gain.
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Transmitter Main Board Instruction Manual 3-7
4 Turn the transmitter on.
5 Adjust the balance compression level (R38) for compression at ±60% maximum
deviation.
6 Set the audio frequency to 2.4 kHz, then adjust the deviation control (R29) for
maximum deviation.
7 Reset the modulating frequency to 1 kHz and re-adjust R38 for ±60% maximum
deviation.
8 Repeat steps 6 and 7 until both conditions are met.
9 Vary the audio signal from 1 kHz to 3 kHz and measure the positive deviation and
then the negative deviation. Adjust the symmetry control (R14) until the ± deviation is
symmetrical. The variation between ± deviation levels should not exceed 300 Hz over
the 1 kHz to 3 kHz range.
10 Repeat steps 6 and 7 and re-adjust if necessary.
11 Adjust the balanced input level control (R31) until the deviation produced by a 1 kHz
tone at -8 dBm falls below ±60% maximum deviation, then adjust R31 so that the
deviation increases until compression is observed. The deviation should be ±1.5 kHz
or ±3 kHz for narrowband and wideband channels respectively.
12 A 1 kHz tone at -8 dBm input level should produce ±60% maximum deviation. If not,
go back to step 4 and make sure the pot is set for maximum gain and repeat the
procedure. If so, increasing the input level by +20 dBm should not increase the
deviation. This confirms that the AGC action of preamplifier U2 is working.
13 A 2.4 kHz tone at the desired audio input level should produce the maximum
deviation. Increasing the input level by +20 dBm should not increase the deviation.
This confirms that the limiting action of U4a and U5a is working.
14 Set the audio frequency back to 1 kHz at -8 dBm output. Confirm and record audio
distortion with the appropriate filter on the communications test set.
15 Confirm the audio frequency response by referencing all output deviation
measurements to a 1 kHz input tone at ±20% maximum deviation (±500 Hz for
narrowband or ±1 kHz for wideband).
16 Remove the signal to the balanced input (pins B18, Z18).
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3-8 Transmitter Main Board Instruction Manual
17 Apply a 1 kHz tone at -8 dBm to the microphone audio input. Set the microphone
compression control (R8) to produce ±60% maximum deviation. Reduce the signal
to -10 dBm and adjust the microphone input level control (R2) for ±50% maximum
deviation. Remove the signal.
18. Apply a 100 Hz tone at -18 dBm to the subtone 1 input and adjust the subtone 1 level
control (R42) to produce ±500 Hz deviation. Remove the signal.
3.9 Standard Factory Settings and Jumper Configuration
Standard factory settings and the associated jumper configuration for the MT-3 Audio Processor
(Version 1.8) are given below.
3.9.1 MT-3 Audio Processor Factory Configuration (Version 1.8)
The MT-3 Audio Processor is factory configured as follows:
• Maximum Deviation: ±2.5 kHz (12.5 kHz or 15 kHz channel),
±5.0 kHz (25 kHz or 30 kHz channel).
• Microphone Input: 1 kHz signal at -10 dBm gives ±50% maximum deviation,
1 kHz signal compression set at ±60% maximum deviation.
• Audio Balanced Input: Enabled - pre-emphasis response,
1 kHz tone at -8 dBm gives ±60% maximum deviation.
1 kHz signal compression set at ±60% maximum deviation.
• Subtone Input 1: 100 Hz tone at -18 dBm gives ±500 Hz deviation.
• All other audio inputs:Disabled.
• Time-Out-Timer: 5 minutes ± 30 seconds.
The corresponding Audio Processor jumper settings are:
• Jumper JU1: not installed Power source select for Direct Modulation circuits.
• Jumper JU2: not installed MT-2 deviation enable (MT-2 transmitters).
• Jumper JU3: 'y' position Microphone preamplifier flat response.
• Jumper JU4: not installed Subtone input 2 audio path select.
• Jumper JU5: not installed Auxiliary input enable (DC or AC coupled).
• Jumper JU6: installed Processed audio path enable (limited and filtered).
• Jumper JU7: not installed Unprocessed auxiliary audio path enable (unfiltered).
• Jumper JU8: not installed Audio output DC coupled (MT-2 transmitters).
• Jumper JU9: installed Balanced input preemphasis response enable.
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Transmitter Main Board Instruction Manual 3-9
• Jumper JU10: not installed Balanced input flat audio response enable.
• Jumper JU11: 'y' position Balanced input to auxiliary audio circuit enable.
• Jumper JU12: not installed Tone/Digital input to auxiliary audio circuit enable.
• Jumper JU13: not installed Direct modulation input to auxiliary audio circuit enable.
• Jumper JU14: not installed Auxiliary input preemphasis response enable.
• Jumper JU15: not installed Auxiliary input flat audio response enable.
• Jumper JU16: installed Subtone input 1 audio path select.
• Jumper JU17: not installed MT-2 Temperature compensation bypass.
• Jumper JU18: not installed Continuous data mode selection.
• Jumper JU19: not installed Power source for audio switches.
• Jumper JU20: not installed Power source for Q2.
• Jumper JU21: not installed Power source for bilateral switch U9.
• Jumper JU22: 'x' position Audio output to lowpass filter
• Jumper JU23: not installed Direct modulation input to subtone 2 enable.
• Jumper JU24: installed Lowpass filter response select.
• Jumper JU25: installed Lowpass filter response select.
• Jumper JU26: installed Lowpass filter response select.
• Jumper JU27: not installed Direct modulation input audio path select.
• Jumper JU28: not installed Amplified direct modulation bypass.
• Jumper JU29: not installed Amplified direct modulation input DC coupled enable.
• Jumper JU30: not installed Amplified direct modulation audio path select.
• Jumper JU31: not installed Audio output AC coupled (MT-3 synthesized transmitters)
• Jumper JU32: not installed Audio output AC coupled (MT-3 crystal transmitters).
• Jumper JU33: installed Audio ouput AC coupled.
• Jumper JU34: not installed Audio output from direct modulation circuits select.
• Jumper JU35: not installed Direct Modulation output source select.
• Jumper JU36: 'y' position Power source select for AGC Preamplifier.
• Jumper JU37: not installed Direct modulation output enable.
• Jumper JU38: not installed Subtone 2, DC coupled, to direct modulation output select.
• Jumper JU39: not installed Direct modulation low input impedance enable.
• Jumper JU40: installed Power for Microphone preamplifier enable.
• Jumper JU41: not used.
• Jumper JU42: not installed Processed audio path to dircet modulation output.
• Jumper JU43: installed Bilateral switch U9 bypass enable.
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3-10 Transmitter Main Board Instruction Manual
3.10 MT-3 Audio Processor Alignment (Version 1.8)
3.10.1General
Verify the standard factory settings for the MT-3 Audio Processor as given in section 3.9.1 before
beginning the standard deviation adjustment procedure. If the transmitter's channel frequency
changes, the audio processor should be realigned to optimize the transmitter's performance. The
schematic diagram for the audio processor is shown in section 5.5.2 and the component layout is
shown in section 5.5.1.
3.10.2MT-3 Audio Processor Standard Deviation Adjustment
Note: clockwise rotation of controls increases signal levels.
1 Connect the transmitter to the radio communications test set and monitor FM
deviation, distortion, and audio frequency. Before adjusting the audio deviation,
confirm that the transmitter RF output frequency is correct.
2 Connect the 600 ohm input to the incoming audio (pins B18, Z18). Set the audio
frequency to 1 kHz at the desired level of -8 dBm.
3 Increase the balance level control (R31) so that the deviation increases until
compression is observed.
4 Adjust the compression control pot (R38) for compression at ±60% maximum
deviation.
5 Set the audio frequency to 2.4 kHz, then adjust the deviation control (R29) for
maximum deviation.
6 Reset the modulating frequency to 1 kHz and re-adjust R38 for ±60% maximum
deviation.
7 Repeat steps 4 and 6 until both conditions are met.
8 Vary the audio signal from 1 kHz to 3 kHz and measure the positive deviation and
then the negative deviation. Adjust the symmetry control (R14) until the ± deviation is
symmetrical. The variation between ± deviation levels should not exceed 300 Hz over
the 1 kHz to 3 kHz range.
9 Repeat steps 4 and 6 and re-adjust if necessary.
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Transmitter Main Board Instruction Manual 3-11
10 Adjust the balanced input level control (R31) so that the deviation increases until
compression is observed. The deviation should be ±1.5 kHz or ±3 kHz for
narrowband and wideband channels respectively.
11 Increase the input level (R31) by +20 dBm, it should not increase the deviation more
than maximum. This confirms that the AGC action of preamplifier U1 is working.
12 A 2.4 kHz tone at the desired audio input level should produce the maximum
deviation. Increasing the input level by +20 dBm should not increase the deviation.
This confirms that the limiting action of U4a and U5a is working.
13 Set the audio frequency back to 1 kHz at -8 dBm output. Confirm and record audio
distortion with the appropriate filter on the communications test set.
14 Confirm the audio frequency response by referencing all output deviation
measurements to a 1 kHz input tone at ±20% maximum deviation (±500 Hz for
narrowband or ±1 kHz for wideband). Remove the signal to the balanced input (pins
B18, Z18).
15 Apply a 1 kHz tone at -8 dBm to the microphone audio input. Set the microphone
compression control (R2) to produce ±50% maximum deviation. Reduce the signal
to -10 dBm and adjust the microphone input level control (R2) for ±50% maximum
deviation. Remove the signal.
16. Apply a 100 Hz tone at -18 dBm to the subtone 1 input and adjust the subtone 1 level
control (R42) to produce ±500 Hz deviation. Remove the signal.
3.11 Low Frequency Modulation Configuration
Note: the following information originates from Daniels Electronics document number A0361-06.
3.11.1MT-3 Transmitters
For transmitters, the LTR™ or DCS signal should be applied to the DIRECT MODULATION
input (pin Z28), which is also available on the M-3 and SR-3 motherboards at the control
connectors J1, P1, or J7 on pins B20 (TX A DIR MOD) and A20 (TX B DIR MOD). The signal
from an LTR™ or DCS encoder should be applied through a 47k resistor to reduce the
loading effect of the DIRECT MODULATION input. The signal should be capacitively
coupled to avoid pulling the transmitter frequency off centre. Most LTR™ and DCS encoder
modules already have a capacitive output. Note that the controller generating the low frequency
signal will need to key the transmitter's PTT input. Note that the synthesizer and the audio
processor may require modifications as described later in this document.
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3-12 Transmitter Main Board Instruction Manual
MT-3 Transmitter (board version 43-920910 through 43-920911)
• J6 installed (synthesizer always powered up by +9.5V SWITCHED line).
• J7 installed in 'X' position (audio processor always powered up by +9.5VSWITCHED
line).
• solder a wire from JA4-2 of main board to J51-18 of synthesizer. This connects the
subtone output 2 to the synthesizer's phase modulation input.
MT-3 Transmitter (board version 43-920912 through 43-920913)
• J6 installed (synthesizer always powered up by +9.5V SWITCHED line).
• J7 installed in 'X' position (audio processor always powered up by +9.5VSWITCHED
line).
MT-3 Transmitter (board version 43-920914 or higher)
• J6 installed (+9.5V SWITCHED line always powered).
• J7 installed in 'X' position. (audio processor always powered up by +9.5VSWITCHED
line).
• J18 installed in the ''X' position (synthesizer always powered up by +9.5VSWITCHED
line).
LTR™ is a Trademark of E.F. Johnson Company.
3.11.2MT-3 Transmitter Audio Processors
MT-3 Transmitter Audio Processor (board version 43-911910 through 43-911913)
• Remove R47 to avoid having too low an input impedance.
• Change C40 to a 10 uF tantalum capacitor (stock code 1054-6E106M25) with the "+"
polarity mark nearest to the edge of the PCB (see figure 3-1). This allows low
frequencies to pass.
• Short pins P4-1 and P4-3 (or install J23) together with a short piece of 22 or 24 gauge
solid wire and solder (see diagram below). This allows the DIRECT MODULATION
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Transmitter Main Board Instruction Manual 3-13
input to the transmitter to be used to gain access to the SUBTONE INPUT 2 which
connects to the PHASE MOD IN input of a modified synthesizer.
• Make sure J13 and J16 are not installed.
Figure 3-1 Transmitter Audio Processor Low Frequency Modulation.
REMOVE
R47
REPLACE WITH
10 uF
+
SHORT TOP TWO PINS
MT3TXMNM7
MT-3 Transmitter Audio Processor (board version 43-911914 through 43-911916)
• Install jumpers: JU38Y, JU35Y
• Remove jumpers: JU27X, JU27Y, JU31, JU35X, JU37, JU38X
• Short pins P4-1 and P4-3 (or install J23) together with a short piece of 22 or 24 gauge
solid wire and solder (see figure 3-1). This allows the DIRECT MODULATION input
to the transmitter to be used to gain access to the SUBTONE INPUT 2 which connects to
the PHASE MOD IN input of a modified synthesizer.
Note that the SUBTONE 2 input should not be used while this modification is in effect. Note also
that adjusting R44 has no effect on the deviation of the low frequency signal.
MT-3 Transmitter Audio Processor (board version 43-911918)
• Contact factory for configuration.
3.11.3Synthesizer and Crystal Controlled Oscillator
Refer to the manual for the Oscillator used in your Transmitter for the required Low Frequency
Modulation modifications.
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3-14 Transmitter Main Board Instruction Manual
3.11.4Tuning the Transmitter
For all MT-3 transmitters, apply a low impedance source of 20-300 Hz to the Direct Modulation
input of the transmitter (Pin Z28 of the 48 pin connector) through a 22 uF capacitor, positive
terminal connected to pin Z28. A Marconi 2955 works well for this test. Adjust R44 on the audio
processor to the fully clockwise position.
• Apply a 100 Hz tone at -8 dBm to the Direct Modulation input of the transmitter (Pin Z28
of the 48 pin connector, and key the transmitter. Adjust the level of the tone until a
deviation of 1.5 kHz is acheived. Note that the level required may be anwhere from -10
dBm to 0 dBm depending on the type of transmitter.
• Confirm that the frequency response rolls off by checking that the following deviations
are observed: (note that the deviation will NOT roll off at 300 Hz if an OC-3 crystal
oscillator is used instead of a synthesizer).
- 20 Hz tone gives about 700 Hz deviation
- 100 Hz tone gives 1.5 kHz deviation
- 300 Hz tone gives about 500 Hz deviation
• Finally, confirm subtone 1 modulation: set-up for 100 Hz Mod with 500 Hz Dev.
- Check 200 Hz Mod, Dev = 1.5 (VHF) / 2.0 kHz (UHF)
- Check 300 Hz Mod, Dev = 1.5 (VHF) / 4.0 kHz (UHF)
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Transmitter Main Board Instruction Manual 4-1
4 TRANSMITTER INTERCONNECT PIN DEFINITIONS
The MT-3 series Transmitter employs a 48 pin Eurostandard connector for interfacing to all
transmitter power, audio, and control functions. The following are the MT-3 series Transmitter
backplane connections to the M-3 Motherboard.
Pin Name Pin Name Pin Name
D2 No Connect B2 +13.8 Vdc Z2 +13.8 Vdc
D4 No Connect B4 MIC Out Z4 MIC In
D6 No Connect B6 +9.5 Vdc Z6 +9.5 Vdc
D8 No Connect B8 Relay Positive Z8 Relay Negative
D10 No Connect B10 PTT WTO Z10 PTT WTO
D12 No Connect B12 Tx Standby Z12 Tx Standby
D14 No Connect (IMC1) B14 PTT NTO Z14 PTT NTO
D16 No Connect (IMC2) B16 No Connect (MT-2 +9.5V) Z16 No Connect (MT-2 +9.5V)
D18 No Connect (IMC3) B18 Balanced Input 2 Z18 Balanced Input 1
D20 Channel Select 0 (LSB) B20 Squelched,De-emph Audio Z20 Squelched, Flat Audio
D22 Channel Select 1 B22 Subtone Input 1 Z22 Tx Audio Control
D24 Channel Select 2 B24 PTT Output Z24 Subtone Input 2
D26 Channel Select 3 (MSB) B26 Forward Power Sense Z26 Reverse Power Sense
D28 Synth Tx Data (Output) B28 Monitor Out Z28 Direct Mod Input
D30 Synth Rx Data (Input) B30 Ground Z30 Ground
D32 Synth Bootstrap (Input) B32 Ground Z32 Ground
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4-2 Transmitter Main Board Instruction Manual
This Page Intentionally Left Blank
ELECTRONICS LTD.
DANIELS
TM
MT-3 AM Transmitter Main Board Instruction Manual
5 ILLUSTRATIONS AND SCHEMATIC DIAGRAMS
5.1 Transmitter Block Diagram
5-1
MT3TXMNM1D
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Transmitter Main Board Instruction Manual 6-1
6 PARTS LISTS
6.1 Transmitter Main Board Parts List
6.1.1 Transmitter Main Board Electrical Parts List
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Transmitter Main Board Instruction Manual 7-1
7 REVISION HISTORY
ISSUE DATE REVISION
1 August 97 First Issue.
Sept. 97 Included PCB version 1.4 Component Layout and Schematic diagrams.
2 Dec 97 Main PCB version now 1.7 (ECO 515).
• BCD Switches changed from Surface Mount Part to Through Hole Part.
• Audio Amplifier was removed because this option was never used.
• Added Timer Out Timer circuitry to Main Tx Board.
• TOT PCB no longer installed on Audio Processor.
For
A21-TX3-00 TX MAIN/FP, MT-3, STANDARD
A21-TX3-30 TX MAIN/FP, MT-3, + REF. INPUT
TUBING, TFE-260C,14AWG T/W,CLR 7610-260C14TW
18mm Long and Consummable Buss Wire 16 Awg 40mm Long
NOW NOT INSTALLED
Dec 97 For
A21-TX3-01 TX MAIN/FP, MT-3, WITH FUSE
A21-TX3-02 TX MAIN/FP, MT-3, + DC RELAY
A21-TX3-03 TX MAIN/FP, MT-3, + FUSE,RELAY
• Removed Jumpers J1, J5, J8, J10, J11.
• Added Jumpers J22 - J29, J31 - J35.
• Added Test Points TP28 - TP34
Dec 97 Front Panel Board version now 1.2 (ECO 521).
Modified MT-3 Tx Front Panel Board (FPB) to support all options on the
New Transmitter Main Board . Also, the Front Panel Board is now easier to
configure if new microphones (other than Daniels microphones) are used.
The new FPB can be used on the old TX-3 main - all options will function.
However, the old version of FPB will NOT work with the new version TX-3
Main PCB (unless you hard wire one of the microphone pins into the main
PCB (13.8V line.)
Added J2 SM Jumper. This jumper now selects Rx Audio or 13.8V to Pin
4 of the Microphone. This capability used to be selected by a jumper on the
Main Tx Board. For Normal Opertion J2 'x' position must be installed
Options - This is for future use (not used now). Added 2x4 header land
pattern to Tx Front Panel Board. A 2x4 header can be installed to make
other microphones compatible with Daniels Transmitters.
3 Nov 98 MT-3 FM Audio Processor now version 1.8
The MT-3 FM Audio Processor was re-designed because the IC, XXXXX,
XXXXX, SO-8 is no longer available from the supplier. Also, the new
design improves the flat and 300Hz Pre-emphasis audio responses.
Included PCB version 1.8 Component Layout, Schematic diagram, Parts List
and Section 2.4, 3.9 and 3.10.
DE DANIELS
ELECTRONICS
7-2 Transmitter Main Board Instruction Manual
ISSUE DATE REVISION
3 Nov 98 Updated the DE logo and added the statuary trademark statement to the title
page. Updated the Low Frequency Modulation section 3.11 to reflect the in
house document A0361-06.
DANIELS
ELECTRONICS LTD.
TM
MT-3 RADIO SYSTEMS
ENHANCED AM/FM
SYNTHESIZER
INSTRUCTION MANUAL
OS(R/T)-3(A/H) 29 - 935 MHz
Preliminary
Covers models:
OST-3H035, OST-3H045, OSR-3H061
OST-3A128, OSR-3A149
OST-3H141, OST-3H162, OSR-3H141, OSR-3H162
OST-3H440, OSR-3H440
OST-3H932
Copyright © 2000 Daniels Electronics Ltd. All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise,
without the prior written consent of Daniels Electronics Ltd.
DE™ is a registered trademark of Daniels Electronics Ltd. registered in the United States Patent and Trademark Office.
Issue: 4 in revision Previous Issue: 3
Issue Date: September 2000 Previous Issue Date: March 2000 Daniels Electronics Ltd.
Printing Date: September 2000 Victoria, BC.
Part No.: IM10-OS3AH PRINTED IN CANADA
ii Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz
Reviewed By:
Quality Assurance:
Claudia Boorman _________________
Name Signature Date
NOTE:
The user's authority to operate this equipment could be revoked through any
changes or modifications not expressly approved by Daniels Electronics Ltd.
The design of this equipment is subject to change due to continuous
development. The equipment covered by this manual may incorporate minor
changes in detail from the information contained in this manual.
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz iii
TABLE OF CONTENTS
Page
1 GENERAL .............................................................................................................................1-1
1.1 Introduction ...................................................................................................................1-1
1.2 OS(R/T)-3(A/H) Enhanced Synthesizer Family Models ..............................................1-1
1.3 Performance Specifications...........................................................................................1-3
1.4 Printed Circuit Board Numbering Convention..............................................................1-4
2 THEORY OF OPERATION..................................................................................................2-1
2.1 Internal Power and Control (Digital Board)..................................................................2-1
2.2 Synthesizer Analog Circuitry (Analog Board)..............................................................2-1
2.2.1 Common Analog Board Circuitry.....................................................................2-1
2.2.2 29 - 71.4 MHz Analog Board Circuitry ............................................................2-3
2.2.3 118 - 159.4 MHz Multichannel AM Analog Board Circuitry ..........................2-3
2.2.4 128 - 174 MHz Analog Board Circuitry ...........................................................2-4
2.2.5 406 - 470 MHz Analog Board Circuitry ...........................................................2-5
2.2.6 928 - 935 MHz Analog Board Circuitry ...........................................................2-6
2.3 Synthesizer Digital Circuitry (Digital Board) ...............................................................2-7
2.4 Frequency Control.........................................................................................................2-7
2.4.1 BCD Switch Frequency Control .......................................................................2-7
2.4.2 Frequency Select Handle Frequency Control....................................................2-8
2.5 Synthesizer Base and Frequency Increment Table .......................................................2-8
2.6 5.0/6.25 kHz Channelization.........................................................................................2-9
2.7 8.333 kHz Channelization.............................................................................................2-9
2.8 12.5 kHz Channelization.............................................................................................2-10
3 SYNTHESIZER ALIGNMENT ............................................................................................3-1
3.1 General ..........................................................................................................................3-1
3.2 Repair Note ...................................................................................................................3-1
3.3 Recommended Test Equipment ....................................................................................3-1
3.4 OS(R/T)-3(A/H) Synthesizer Factory Configuration....................................................3-1
3.5 OS(R/T)-3(A/H) Synthesizer Alignment ......................................................................3-2
3.5.1 General ..............................................................................................................3-2
3.5.2 Synthesizer Test Points .....................................................................................3-2
3.5.3 Synthesizer Removal and Installation ...............................................................3-3
3.5.4 Circuit Board Removal......................................................................................3-3
3.5.5 Frequency Adjustment and Channel Selection .................................................3-3
3.5.5.1 VHF OS(R/T)-3H 29 - 71.4 MHz VCO Alignment ..........................3-4
3.5.5.2 VHF OS(R/T)-3A 118 - 159.4 MHz Alignment................................3-5
3.5.5.3 VHF OS(R/T)-3H 128 - 174 MHz VCO Alignment .........................3-5
3.5.5.4 UHF OS(R/T)-3H 406 - 470 MHz VCO Alignment .........................3-6
3.5.5.5 UHF OS(R/T)-3H 928 - 935 MHz VCO Alignment .........................3-6
3.5.5.6 Reference Frequency Alignment........................................................3-7
3.5.6 Jumper Configuration........................................................................................3-8
4 ILLUSTRATIONS AND SCHEMATIC DIAGRAMS.........................................................4-1
iv Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz
4.1 OS(R/T)-3H 29 - 71.4 MHz Analog Board Diagrams..................................................4-1
4.1.1 OS(R/T)-3H 29 - 71.4 MHz Analog Board Component Layout (Bottom).......4-1
4.1.2 OS(R/T)-3H 29 - 71.4 MHz Analog Board Component Layout (Top) ............4-2
4.1.3 OS(R/T)-3H 29 - 71.4 MHz Analog Board Schematic Diagram......................4-3
4.2 OS(R/T)-3A 118 - 159.4 MHz Analog Board Diagrams ..............................................4-5
4.2.1 OS(R/T)-3A 118 - 159.4 MHz Analog Board Component Layout (Bottom)...4-5
4.2.2 OS(R/T)-3A 118 - 159.4 MHz Analog Board Component Layout (Top) ........4-6
4.2.3 OS(R/T)-3A 118 - 159.4 MHz Analog Board Schematic Diagram..................4-7
4.3 OS(R/T)-3H 128 - 174 MHz Analog Board Diagrams .................................................4-9
4.3.1 OS(R/T)-3H 128 - 174 MHz Analog Board Component Layout (Bottom)......4-9
4.3.2 OS(R/T)-3H 128 - 174 MHz Analog Board Component Layout (Top) .........4-10
4.3.3 OS(R/T)-3H 128 - 174 MHz Analog Board Schematic Diagram...................4-11
4.4 OS(R/T)-3H 406 - 470 MHz Analog Board Diagrams ...............................................4-13
4.4.1 OS(R/T)-3H 406 - 470 MHz Analog Board Component Layout (Bottom)....4-13
4.4.2 OS(R/T)-3H 406 - 470 MHz Analog Board Component Layout (Top) .........4-14
4.4.3 OS(R/T)-3H 406 - 470 MHz Analog Board Schematic Diagram...................4-15
4.5 OS(R/T)-3H 928 - 935 MHz Analog Board Diagrams ...............................................4-17
4.5.1 OS(R/T)-3H 928 - 935 MHz Analog Board Component Layout (Bottom)....4-17
4.5.2 OS(R/T)-3H 928 - 935 MHz Analog Board Component Layout (Top) .........4-18
4.5.3 OS(R/T)-3H 928 - 935 MHz Analog Board Schematic Diagram...................4-19
4.6 OS(R/T)-3(A/H) Digital Board Diagrams...................................................................4-21
4.6.1 OS(R/T)-3(A/H) Digital Board Component Layout (Bottom) .......................4-21
4.6.2 OS(R/T)-3(A/H) Digital Board Component Layout (Top).............................4-22
4.6.3 OS(R/T)-3(A/H) Digital Board Schematic Diagram ......................................4-23
5 PARTS LISTS........................................................................................................................5-1
5.1 OS(R/T)-3H 29 - 71.4 MHz Analog Board Electrical Parts List..................................5-1
5.2 OS(R/T)-3A 118 - 159.4 MHz Analog Board Electrical Parts List ..............................5-5
5.3 OS(R/T)-3H 128 - 174 MHz Analog Board Electrical Parts List .................................5-8
5.4 OS(R/T)-3H 406 - 470 MHz Analog Board Electrical Parts List ...............................5-11
5.5 OS(R/T)-3H 928 - 935 MHz Analog Board Electrical Parts List ...............................5-14
5.6 OS(R/T)-3(A/H) Digital Board Electrical Parts List...................................................5-17
5.7 OS(R/T)-3(A/H) Synthesizer Mechanical Parts List ..................................................5-18
6 REVISION HISTORY...........................................................................................................6-1
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz 1-1
1 GENERAL
1.1 Introduction
The OS-3A/H Synthesizer is a compact, fully shielded and environmentally rugged frequency
synthesis module that is the nucleus of every MT-3 synthesized Receiver and Transmitter radio
module. The OS-3A/H generates a high stability, low distortion radio frequency signal in one of
several frequency bands, including 29 - 50 MHz, 118 - 159.4 MHz, 118 - 174 MHz,
406 - 470 MHz and 928 – 935 MHz. The OS-3A/H utilizes an internal temperature compensated
9.6 MHz reference to produce a signal stable to ±1 ppm within the temperature range of -40°C to
+60°C. Alternately, the OS-3A/H can be disciplined by an external 9.6 MHz or 10 MHz
reference of higher stability. The OS-3A/H Synthesizer Module is manufactured in thirteen
distinct models which cover five primary frequency bands (see section 1.2 below). All
synthesizer modules are designed to be easily removed for programming, calibration and/or
repair. The synthesizer circuitry is distributed between two printed circuit boards (PCBs) which
are isolated yet interconnected via photo-logic optical transceivers that effectively eliminate
residual electrical noise between digital and analog circuitry. Further shielding of the
synthesizer’s RF filter circuitry is provided by an internal shielded enclosure.
1.2 OS(R/T)-3(A/H) Enhanced Synthesizer Family Models
The OS-3A/H Synthesizer Module is utilized in both the MT-3 Receiver and Transmitter product
lines. In MT-3 Transmitters, the OS-3A/H synthesizer provides a modulated, low-level RF
signal to the Power Amplifier module. In MT-3 Receivers, the OS-3A/H synthesizer provides a
low noise local oscillator (LO) signal that either directly drives the mixer circuitry or first drives
a buffer amplifier which precedes the mixer circuitry (if a higher LO drive signal is required for
enhanced intermodulation capability). There are thirteen distinct models within the OS-3A/H
Enhanced Synthesizer Family. Note that this manual provides service and operating information
for all thirteen synthesizer modules. It is extremely important to establish the correct synthesizer
model number, as documentation is model-specific. The model number can be found on the
synthesizer label, located on the synthesizer module top cover.
The thirteen synthesizer models that comprise the OS-3A/H Synthesizer family are follows:
Frequency Band: 29 - 50 MHz, Common OS-3H0xx Analog Board
• OST-3H035 - installed in FM transmitter, 29 - 38 MHz RF output.
• OST-3H045 - installed in FM transmitter, 38 - 50 MHz RF output.
• OSR-3H061 - installed in FM receiver, 50.4 - 71.4 MHz RF output.
1-2 Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz
Frequency Band: 118 - 159.4 MHz, AM Multichannel OS-3H1xx Analog Board
• OST-3A128 - installed in AM transmitter, 118 - 138 MHz RF output.
• OSR-3A149 - installed in AM receiver, 139.4 - 159.4 MHz RF output.
Frequency Band: 128 - 174 MHz, Common OS-3H1xx Analog Board
• OST-3H141 - installed in FM transmitter, 128 - 152.6 MHz RF output.
• OST-3H162 - installed in FM transmitter, 150 - 174 MHz RF output.
• OSR-3H141 - installed in FM receiver, 128 - 152.6 MHz RF output.
• OSR-3H162 - installed in FM receiver, 150 - 174 MHz RF output.
Frequency Band: 406 - 470 MHz, Common OS-3H4xx Analog Board
• OST-3H418 - installed in FM transmitter, 406 - 430 MHz RF output.
• OST-3H460 - installed in FM transmitter, 450 - 470 MHz RF output
• OSR-3H440 - installed in FM receiver, 427.4 - 451.4 MHz RF output.
Frequency Band: 928 - 935 MHz, Common OS-3H932 Analog Board
• OST-3H932 - installed in FM transmitter, 928 - 935 MHz RF output.
All OS-3A/H Enhanced Synthesizer Modules, regardless of the frequency band, use the same
digital PCB and mechanical construction. There are, however, significant differences between
the various models when it comes to the analog PCB. There are five different analog PCBs,
designed to cover the five frequency bands of 29 - 50 MHz, 118 - 159.4 MHz, 128 - 174 MHz,
406 - 470 MHz and 928 - 935 MHz. Each model’s specific sub-band of operation within a given
frequency band is determined through SELECT components on the corresponding analog board.
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz 1-3
1.3 Performance Specifications
Type: Narrow band FM, Single loop synthesizer module utilizing low
noise VCO and PLL technology. Compatible with Daniels
MT-3 series Transmitter and Receiver modules.
Frequency Range: 29 MHz - 38 MHz [±0.5 MHz]
(OST-3H035)
(Tuning range with no adjustment
38 MHz - 50 MHz [±1.0 MHz]
(OST-3H045)
is shown in [ ] brackets.)
50.4 MHz - 71.4 MHz [±1.0 MHz]
(OSR-3H061)
118 MHz -138 MHz [Full band]
(OST-3A128)
128 MHz - 152.6 MHz [±2.0 MHz]
(OST-3H141, OSR-3H141)
139.4 MHz - 159.4 MHz [Full band]
(OSR-3A149)
150 MHz - 174 MHz [±2.0 MHz]
(OST-3H162, OSR-3H162)
406 MHz - 430 MHz [Full band]
(OST-3H418)
427.4 MHz - 451.4 MHz [Full band]
(OSR-3H440)
450 MHz - 470 MHz [Full band]
(OST-3H460)
928 MHz - 935 MHz [Full band]
(OST-3H932)
Output Power: +5 dBm ±2 dBm into 50Ω
Harmonics: <-30 dBc
Spurious: <-90 dBc
<-70 dBc above 400 MHz
Attack Time: <10 ms (Normal Mode)
<50 ms (Low Current Standby Mode)
Hum and Noise: -55 dB
Modulation Sensitivity: 3.0 kHz peak deviation (400 mVrms input)
External Reference Input: External reference input signal via SMB connector J1
Input level 0 dBm ±3 dB
Input impedance 50Ω
Input frequency 10.0 MHz or 9.6 MHz (selectable through
digital board jumper JU1)
Power Requirements: Normal Configuration:
+9.5 Vdc @ 160 mA for FM and 65 mA for AM
Low Current Standby Mode (TCXO enabled):
+9.5 Vdc @ 14 mA for FM and 4 mA for AM
1-4 Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz
1.4 Printed Circuit Board Numbering Convention
To expedite troubleshooting and maintenance procedures, Daniels Electronics Ltd. has adopted a
printed circuit board (PCB) numbering convention in which the last two digits of the circuit
board number represent the circuit board version. All PCB's manufactured by Daniels
Electronics Ltd. are identified by one of the following numbering conventions:
• PCB number 43-912010 indicates circuit board version 1.0; or
• PCB number 50002-02 indicates circuit board version 2.0
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz 2-1
2 THEORY OF OPERATION
2.1 Internal Power and Control (Digital Board)
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz 3-1
3 SYNTHESIZER ALIGNMENT
3.1 General
OS(R/T)-3(A/H) enhanced synthesizer alignment is simplified by using a Type 84 subrack and
RF extender card/cable of providing receiver or transmitter power and signal interconnection.
Alternately, +9.5 Vdc may be directly connected to a receiver or transmitter module with the
positive connection on pins B6 / Z6 and the negative connection on pins B30 / Z30 / B32 / Z32.
Receiver balanced audio (600 Ω) is available at pins B26 and Z26.
3.2 Repair Note
The OS(R/T)-3(A/H) synthesizer employs a large number of surface mount components.
Removal and/or replacement of surface mount components should never be performed using an
ordinary soldering iron but should only be performed at surface mount rework and repair stations
equipped with Electro Static Dissipative (ESD) protection.
When removing Surface Mount Solder Jumpers, it is recommended that solder wick braid be
used in lieu of vacuum type de-soldering tools to help prevent damage to the printed circuit
boards.
3.3 Recommended Test Equipment
Alignment of the synthesizer requires the following test equipment, or its equivalent:
Power supply - Regulated +9.5 Vdc at 2 A. Phillips PM 2811
Oscilloscope / Multimeter - Fluke 97 Scopemeter
Radio communications test set - Marconi Instruments 2965A
It is recommended that the radio communications test set be referenced to an external high
stability frequency source (WWVH, GPS, Loran C) so that the OS-3A/H internal high stability
local oscillator may be accurately set to within its ±1 ppm frequency tolerance.
3.4 OS(R/T)-3(A/H) Synthesizer Factory Configuration
The OS(R/T)-3(A/H) Synthesizer is factory configured as follows:
• Internal 9.6 MHz reference selected.
• VCO modulation (via audio processor) enabled (OST TX versions only)
3-2 Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz
The corresponding internal synthesizer jumper settings are:
Digital Board
• Jumper JU2 not installed 9.6 MHz internal frequency reference selected
• Jumper JU1 installed AM Multichannel mode selected
Analog Board
• Jumper JU1: 'B' position Internal frequency reference selected
• Jumper JU2 not installed Internal frequency reference selected
3.5 OS(R/T)-3(A/H) Synthesizer Alignment
3.5.1 General
Under normal circumstances (i.e. a change in operating frequency within the synthesizer’s
maximum tuning range), synthesizer alignment is accomplished with the synthesizer installed in
the MT-3 Receiver IF/Audio Board or the MT-3 Transmitter Main Board. The alignment
procedure involves setting the internal TCXO reference frequency (if one is installed and the
internal reference option is enabled). This step is described in "Reference Frequency
Alignment", section 3.5.5.5. A change in operating frequency from the initial factory setting that
exceeds the synthesizer’s maximum tuning range (Refer to Specifications section 1.3) requires a
more involved alignment procedure as described in sections 3.5.2 to 3.5.5. Conversion of a
synthesizer from internal reference to external reference or vice-versa is accomplished through
selection of jumper JU1 A or B, as appropriate and JU2 (Refer to section 3.5.6).
3.5.2 Synthesizer Test Points
Analog Board Component Layout (Top)
Common to all synthesizer family members.
TP1 +8.0 ±0.3 Vdc. U6 positive regulator output.
TP2 +5.0 ±0.1 Vdc. U7 positive regulator output.
TP3 +5.0 ±0.1 Vdc. U8 positive regulator output (always on).
TP4 PLL error voltage. Normal range is +0.5 to +4.5 Vdc (depending on frequency).
Nominally adjusted for +2.3 Vdc (via C24) for center channel. UHF/VHF
versions employing integrated VCO modules (OSR-3H440, OST-3H418,
OST-3H460, OSR-3A149, OST-3A128, OST-3H932) require no adjustment.
Digital Board Component Layout (Bottom)
TP1 +5.0 ±0.1 Vdc. U2 positive regulator output (controlled via pin P2-4).
TP2 Microcontroller E clock. 2 MHz logic level square wave.
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz 3-3
3.5.3 Synthesizer Removal and Installation
The synthesizer module is secured to the main board (MT-3 Receiver IF/Audio Board or MT-3
Transmitter Main board) with a single counter sunk Phillips machine screw accessible from the
top cover. Remove this screw to remove the synthesizer module. Using a plastic coated lifting
tool, such as a small screwdriver with the tip covered in heat shrink material, gently lift the
synthesizer module from the main circuit board by applying pressure in a rotating fashion about
the four corners of the synthesizer module. It is important to gently remove the synthesizer
module "straight out" in order to prevent damage to the connector pins. Installation of the
synthesizer is performed in a reverse fashion. It is important to ensure complete connector pin
alignment prior to any application of reinsertion force. Four corner locating pins on the
synthesizer housing assist in connector pin alignment during installation and removal.
Note: Complete synthesizer alignment can be performed without removing the synthesizer.
The alignment procedure starting in section 3.5.5 may now be performed.
3.5.4 Circuit Board Removal
Note: Circuit board removal is not required for tuning purposes.
Using a vacuum de-soldering station, de-solder connections P1, P2 and P3. Remove SMB
connectors J1 and J2 by de-soldering the center pins and removing four M2.0 machine screws.
These connection points are shown in the "OS(R/T)-3(A/H) XXX - XXX MHz Analog Board
Component Layout (Top)" diagrams. Remove seven M2.0 machine screws and carefully remove
the analog circuit board. Removal of the analog circuit board will expose three inter-board wire
connections. Carefully remove three ferrite beads and six Teflon washers from the inter-board
connection wires. Attempt to maintain the position of the three inter-board wires in order to
simplify re-assembly. The digital board may now be extracted by removing four M2.0 machine
screws. Follow a reverse procedure to re-assemble.
3.5.5 Frequency Adjustment and Channel Selection
Connect a radio communications test set through a short section of low loss 50 Ω coaxial cable
to the synthesizer module SMB RF output jack (J2). Select the desired channel number via the
BCD frequency selection switches on the MT-3 Transmitter Main board or the MT-3 Receiver
IF/Audio board (or through .the Frequency Programming Module). Turn the power off and back
on and wait a few minutes for the oscillator to completely stabilize. It should be noted that the
internal synthesizer TCXO, if installed, operates continuously (regardless of the TX PTT state)
when installed in a transmitter.
3-4 Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz
The measured RF output signal should be within ±1.0 ppm of the specified oscillator frequency
at an output level of +5 dBm. Note that unlocked synthesizer operation will be indicated by an
unstable or spurious RF output signal. The "Unlocked" red LED will also be illuminated when
the PLL is unlocked. Check that the requested channel number is within the frequency range of
the particular synthesizer model. An unlocked condition may be rectified by adjusting the VCO
tuning elements as described in the following procedures (no adjustment required for the
Multichannel AM Synthesizers). Note that there are variations in alignment procedures between
the three synthesizer family members as described in the following sections.
3.5.5.1 VHF OS(R/T)-3H 29 - 71.4 MHz VCO Alignment
Refer to the "OS(R/T)-3H 29 - 71.4 MHz Analog Board Component Layout" diagrams and the
"OS(R/T)-3H 29 - 71.4 MHz Analog Board Schematic Diagram" on pages 4-1, 4-2 and 4-3 of
this manual.
Using a high impedance (10 MΩ) DC Voltmeter, measure the PLL control voltage at TP4
located on the synthesizer module analog board (top). Access to TP4 is available through the
synthesizer top cover. Using a small standard blade screwdriver, carefully adjust the VCO fine
frequency "TUNE" trimmer capacitor C24 until a test point (TP4) voltage of approximately
+2.3 Vdc is obtained. PLL loop control voltages below approximately +0.5 Vdc and above
approximately +4.5 Vdc will indicate an "out of lock" synthesizer condition.
If a test point (TP4) reading of approximately +2.3 Vdc is unattainable through adjustment of
C24, then the coarse frequency jumpers, JU2-JU4 require modification in order to pull the VCO
tune range within the adjustment range of fine tuning capacitor C24. The top synthesizer cover
must be removed in order to gain access to the coarse frequency jumpers. The coarse frequency
jumpers (JU2-JU4) may be considered to be a selectable binary weighted capacitor element with
JU2 being the most significant "bit" and JU4 being the least significant "bit". The tuning
resolution size is ≈12 pF (JU4). If the tuning voltage remains higher than +2.3 Vdc, decrease the
tuning jumper setting by 1 "bit" position and re-adjust C24 in an attempt to achieve +2.3 Vdc at
TP4. For example, if coarse frequency jumpers JU2-JU4 are all installed and represented by 111
then a decrease by 1 "bit" position (12 pF) is represented by a binary jumper selection of 110;
jumper JU4 is not installed and jumpers JU2, JU3 are installed. Continue to decrease the jumper
position one "bit" at a time until the synthesizer regains lock with TP4 adjusted (C24) for
+2.3 Vdc. If the tuning voltage remains lower than +2.3 Vdc, increase the jumper setting by 1
"bit" position and re-adjust C24 in an attempt to achieve +2.3 Vdc at TP4. Repeat this procedure
until +2.3 Vdc is achieved at TP4.
It is important to check the loop control voltage at TP4 when multiple synthesizer channels have
been programmed. All channel selections should result in a TP4 voltage within a +1.0 to
+4.0 Vdc range. Adjust the fine-tuning capacitor C24 to center multiple channel voltages
symmetrically about +2.3 Vdc. Channel selections beyond the tuning range capability of the
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz 3-5
synthesizer will result in unlocked operation. The tuning range capability of all synthesizer
models is listed in the Specifications section (1.3) of this manual.
3.5.5.2 VHF OS(R/T)-3A 118 - 159.4 MHz Alignment
Refer to the "OS(R/T)-3A 118 - 159.4 MHz Analog Board Component Layout" diagram and the
"OS(R/T)-3A 118 - 159.4 MHz Analog Board Schematic Diagram" on pages 4-5, 4-6 and 4-7 of
this manual.
Using a high impedance (10 MΩ) DC Voltmeter, measure the PLL control voltage at TP4
located on the synthesizer module analog board (top). Access to TP4 is available through the
synthesizer top cover. VHF synthesizers operating in the 118 - 159.4 MHz frequency range
require no frequency adjustment as tuning is microprocessor controlled. (The OST-3A128 and
OSR-3A149, covering 118-138 MHz and 139.4 - 159.4 MHz respectively, provide full band
coverage without tuning adjustment.)
All channel selections should result in a TP4 voltage between +3.1 and +3.5 Vdc. Channel
selections beyond the tuning range capability of the synthesizer will result in unlocked operation
over the temperature range -40C to +60C. The tuning range capability of all synthesizer models
is listed in the Specifications section of this manual.
3.5.5.3 VHF OS(R/T)-3H 128 - 174 MHz VCO Alignment
Refer to the "OS(R/T)-3H 128 - 174 MHz Analog Board Component Layout" diagram and the
"OS(R/T)-3H 128 - 174 MHz Analog Board Schematic Diagram" on pages 4-9, 4-10 and 4-11 of
this manual.
Using a high impedance (10 MΩ) DC Voltmeter, measure the PLL control voltage at TP4
located on the synthesizer module analog board (top). Access to TP4 is available through the
synthesizer top cover. Using a small standard blade screwdriver, carefully adjust the VCO fine
frequency "TUNE" trimmer capacitor C24 until a test point (TP4) voltage of approximately
+2.3 Vdc is obtained. Measured PLL loop control voltages below approximately +0.5 Vdc and
above approximately +4.5 Vdc will indicate an "out of lock" synthesizer condition.
It is important to check the loop control voltage at TP4 when multiple synthesizer channels have
been programmed. All channel selections should result in a TP4 voltage within the +1.0 to
+4.0 Vdc range. Adjust the fine-tuning capacitor C24 to center multiple channel voltages
symmetrically about +2.3 Vdc. Channel selections beyond the tuning range capability of the
synthesizer will result in unlocked operation. The tuning range capability of all synthesizer
models is listed in the Specifications section of this manual.
3-6 Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz
3.5.5.4 UHF OS(R/T)-3H 406 - 470 MHz VCO Alignment
Refer to the "OS(R/T)-3H 406 - 470 MHz Analog Board Component Layout" diagram and the
"OS(R/T)-3H 406 - 470 MHz Analog Board Schematic Diagram" on pages 4-13, 4-14 and 4-15
of this manual.
Using a high impedance (10 MΩ) DC Voltmeter, measure the PLL control voltage at TP4
located on the synthesizer module analog board (top). Access to TP4 is available through the
synthesizer top cover. The UHF synthesizers operating in the 406 - 470 MHz frequency range
employ integrated VCO modules having no external frequency adjustment capability. The
OST-3H418, OST-3H460 and OSR-3H440 models cover frequencies from 406 - 430 MHz,
450 - 470 MHz and 427.4 - 451.4 MHz respectively and provide full band coverage without
tuning adjustment. For the OST-3H418, measured PLL control voltages below approximately
+0.5 Vdc and above approximately +4.5 Vdc will indicate an “out of lock” condition. For the
OSR-3H440 and the OST-3H460, measured PLL control voltages below approximately
+1.0 Vdc and above approximately +7.0 Vdc will indicate an “out of lock” condition.
It is important to check the loop control voltage at TP4 when multiple synthesizer channels have
been programmed. All channel selections should result in a TP4 voltage within the +0.5 to
+4.5 Vdc range for the OST-3H418. The TP4 voltage for the OSR-3H440 and the OST-3H460
should be within the +1.0 to +7.0 Vdc range. Channel selections beyond the tuning range
capability of the synthesizer will result in unlocked operation. The tuning range capability of all
synthesizer models is listed in the Specifications section of this manual.
3.5.5.5 UHF OS(R/T)-3H 928 - 935 MHz VCO Alignment
Refer to the "OS(R/T)-3H 928 -935 MHz Analog Board Component Layout" diagram and the
"OS(R/T)-3H 928 - 935 MHz Analog Board Schematic Diagram" on pages 4-17, 4-18 and 4-19
of this manual.
Using a high impedance (10 MΩ) DC Voltmeter, measure the PLL control voltage at TP4
located on the synthesizer module analog board (top). Access to TP4 is available through the
synthesizer top cover. The UHF synthesizers operating in the 928 - 935 MHz frequency range
employ integrated VCO modules having no external frequency adjustment capability. The
OST-3H932 model covers frequencies from 928 - 935 MHz and provides full band coverage
without tuning adjustment. For the OST-3H932, measured PLL control voltages below
approximately +0.5 Vdc and above approximately +4.5 Vdc will indicate an “out of lock”
condition.
It is important to check the loop control voltage at TP4 when multiple synthesizer channels have
been programmed. All channel selections should result in a TP4 voltage within the +0.5 to
+4.5 Vdc range for the OST-3H932. Channel selections beyond the tuning range capability of
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz 3-7
the synthesizer will result in unlocked operation. The tuning range capability of all synthesizer
models is listed in the Specifications section of this manual.
3.5.5.6 Reference Frequency Alignment
Adjust the synthesizer TCXO fine frequency potentiometer RV1 until the correct output
frequency is achieved. Access to this potentiometer is through an opening in the synthesizer top
cover. A RF power level of approximately +5 dBm should be measured at the synthesizer
module output connector and the frequency should be within ±1 ppm of the desired operating
frequency. Reference frequency adjustments should be made at room temperature (+25°C) after
a ten minute stabilization period.
3-8 Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz
3.5.6 Jumper Configuration
Solder jumpers are clearly marked on both synthesizer digital and analog circuit boards. Refer to
the "OS(R/T)-3(A/H) Digital Board Component Layout (Bottom)" diagram on page 4-20 of this
manual and the applicable "OS(R/T)-3(A/H) Analog Board Component Layout (Top)" diagram
on page 4-21 for jumper locations. The following list details the required jumper configuration
for the two synthesizer operating modes:
1) Internal reference. Install jumper JU1-B, on the Analog Board (Standard). The internal
temperature compensated crystal oscillator (TCXO) provides the reference signal with a
stability of ±1 ppm from -30°C (Optional -40°C) to +60°C.
2) External reference input. Install jumper JU1-A and JU2 on the Analog Board. This
mode is used in applications requiring better than ±1 ppm frequency stability. An
external reference signal must be provided at synthesizer SMB connector J1.
3) Reference Frequency Select. Install jumper JU2 on the Digital Board to select a
10.0 MHz reference frequency. When not installed, the reference frequency is by default
9.6 MHz. JU2 must not be installed when using the internal 9.6 MHz TCXO reference.
JU2 is used by the microcontroller to establish the correct reference frequency division
ratio. (Located on the Digital Board; The Synthesizer module must be removed to
change jumper JU2.)
4) AM Multichannel Synthesizer Select. Install jumper JU1 on the Digital Board to select
and enable the AM Multichannel Synthesizer with Frequency Select Handle.
Caution: Care must be exercised when reinstalling the synthesizer module on the Transmitter
Main board or the IF/Audio board. Pay careful attention to pin alignment before
pressing the synthesizer module into its mating sockets.
DE DANIELS
ELECTRONICS
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz 4-1
4 ILLUSTRATIONS AND SCHEMATIC DIAGRAMS
4.1 OS(R/T)-3H 29 - 71.4 MHz Analog Board Diagrams
4.1.1 OS(R/T)-3H 29 - 71.4 MHz Analog Board Component Layout (Bottom)
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz 5-1
5 PARTS LISTS
5.1 OS(R/T)-3H 29 - 71.4 MHz Analog Board Electrical Parts List
Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz 6-1
6 REVISION HISTORY
ISSUE DATE REVISION
1 May 97 • Issue 1
2 Mar 98 • Changes to the AM Analog board (OST-3A128) to improve
performance. ECO #547.
C37 was 220nF is now 100nF and C40 was 8.2pF is now not installed
C45 was 33nF is now 22nF and C49 was 2.2nF is now 1.5nF
R32 was 33kΩ is now 56kΩand R36 was 3k3Ω is now 5k6Ω
3 Mar 00 • Changes to the AM Analog board to improve performance at -40˚C.
ECO #565.
L4 was 1.5µH is now 3.9 µH
• Changes to the FM Analog boards to improve manufacturing. ECO #572
C32 & C33 were 100µF through hole tantalums are now 100µF surface
mount tantalums
• Changes to the OS-3A/H Digital board for compatibility with the new
AM wideband Synthesizers. ECO #579.
Added C15 (10µF) and R41 (221kΩ).
JU1 was added and is installed for AM modules only.
PCB, DIGITAL, OS-3H/P SYNTH was version 2 now version 3.
• Added the new component layouts, schematic diagram and parts lists for
the new AM wideband synthesizer. Wideband referring to only having
to be tune once and working over the whole AM band (118-138 MHz).
4 May 00 • Changes to the OS-3H 128-174 MHz Analog board. ECO #603.
R29 was 18k2 is now 3k92, U10 was MC145191 is now MC145193.
• Changes to the OSR-3H 128-174 MHz Analog board. ECO #609.
R22 was 100R is now 0R0.
• Changes to the OS-3A 118-159.4 Analog board. ECO #601.
R42 & R53 were 137kΩ are now 100kΩ.
Jul 00 • Corrected the SELECT table on the OS(R/T)-3H 128-174 MHz
Schematic diagram (section 4.3.3).
6-2 Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 935 MHz
ISSUE DATE REVISION
4 Aug 00 • Changes to the OS(R/T)-3(A/H) Digital board. ECO #599.
R30, R31 & R32 were 332R are now 215R.
• Changes to the OS-3H 406-470 MHz Analog board. ECO # 597.
R48 was 27R4 is now 47R5, R49 was 33R2 is now 10R.
R52 was 49R9 is now Not Installed.
Oct 00 • Added the TBA part numbers for U1- U4 & U18 on the OS-3A 118-
159.4 MHz Analog Board.
Dec 00 • Changes to the OS-3H 29-71.4 MHz Analog Board. ECO #631
R22 eas 475R is now 1k00.
Jan 01 • Change to the OS-3A 118-159.4 MHz Analog Board. ECO #589.
R31 was 100R is now 49R9
• Changes to the OST-3A128 Analog Board.
C35 was 5.6pF is now 3.3pF and R40 was 330R is now 220R.
Feb 01 • Corrected the confusion with D6 & D7 on the OS-3A 118-159.4 MHz
Analog Board parts list.
• Changes to the OS-3A 118-159.4 MHz Analog Board. ECO #634.
C26 was 1nF is now 3.3pF.
• Changes to the OS-3 128 – 174 MHz Analog Board. ECO #635.
C56 was 330pF is now R42 (Select).
Apr 01 • Changes to the OST-3H4xx Analog Board. ECO #619.
C37 – C39 were 1.0µF are now 1.5µF, C45 was 220nF is now 68nF.
C49 was 22nF now 15nF, C60 was 100nF now a zero ohm wire jumper.
R19 was 10k0 is now zero ohm jumper (Both OS(R/T)-3H4xx).
R32 was 5k6 is now 6k2 and R36 was 2k2 is now 1k2.
Jan 03 • Updated all sections to include an extra band from 928 - 935 MHz
• Added Schematics, CLD and Parts lists for the OST-3H932 module
DANIELS
ELECTRONICS LTD.
TM
MT-3 RADIO SYSTEMS
UHF TX
CHANNEL
DESIGNATION TABLES
UT-3/935 928 - 935MHz
Covers models: UT-3/935-SWB3, UT-3/935-SNB3
Copyright © 1998 Daniels Electronics Ltd. All rights reserved. No part of this publication may be
reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic,
mechanical, photocopying, recording or otherwise, without the prior written consent of Daniels
Electronics Ltd.
DE™ is a registered trademark of Daniels Electronics Ltd. registered in the United States Patent
and Trademark Office.
Issue: Preliminary Previous Issue: -
Issue Date: New Previous Issue Date: - Daniels Electronics Ltd.
Printing Date: Month Year Victoria, BC.
Part No.: New PRINTED IN CANADA
DEDANIELS
ELECTRONICS
ii UHF Tx Channel Designation Tables UT-3 928 - 935 MHz
Reviewed By:
Quality Assurance:
Larry Freeman _________________
Name Signature Date
NOTE:
The user's authority to operate this equipment could be revoked through any
changes or modifications not expressly approved by Daniels Electronics Ltd.
The design of this equipment is subject to change due to continuous
development. This equipment may incorporate minor changes in detail from the
information contained in this manual.
DEDANIELS
ELECTRONICS
UHF Tx Channel Designation Tables UT-3 928 - 935 MHz iii
TABLE OF CONTENTS
Page
1. CHANNEL DESIGNATION TABLES...............................................................1-1
1.1 UT-3/935 Channel Designation Table: 928 - 935 MHz ..........................1-1
2 REVISION HISTORY.........................................................................................2-1
DEDANIELS
ELECTRONICS
iv UHF Tx Channel Designation Tables UT-3 928 - 935 MHz
This Page Intentionally Left Blank
DEDANIELS
ELECTRONICS
UHF Tx Channel Designation Tables UT-3 928 - 935 MHz 1-1
1. CHANNEL DESIGNATION TABLES
1.1 UT-3/932 Channel Designation Table: 928-935 MHz,6.25 kHz Increments
Chan. Freq. Chan. Freq. Chan. Freq. Chan. Freq. Chan. Freq. Chan. Freq. Chan. Freq.
Num. (MHz) Num. (MHz) Num. (MHz) Num. (MHz) Num. (MHz) Num. (MHz) Num. (MHz)
2400 928.00000 2475 928.46875 2550 928.93750 2625 929.40625 2700 929.87500 2775 930.34375 2850 930.81250
2401 0.00625 2476 0.47500 2551 0.94375 2626 0.41250 2701 0.88125 2776 0.35000 2851 0.81875
2402 0.01250 2477 0.48125 2552 0.95000 2627 0.41875 2702 0.88750 2777 0.35625 2852 0.82500
2403 0.01875 2478 0.48750 2553 0.95625 2628 0.42500 2703 0.89375 2778 0.36250 2853 0.83125
2404 0.02500 2479 0.49375 2554 0.96250 2629 0.43125 2704 0.90000 2779 0.36875 2854 0.83750
2405 0.03125 2480 928.50000 2555 0.96875 2630 0.43750 2705 0.90625 2780 0.37500 2855 0.84375
2406 0.03750 2481 0.50625 2556 0.97500 2631 0.44375 2706 0.91250 2781 0.38125 2856 0.85000
2407 0.04375 2482 0.51250 2557 0.98125 2632 0.45000 2707 0.91875 2782 0.38750 2857 0.85625
2408 0.05000 2483 0.51875 2558 0.98750 2633 0.45625 2708 0.92500 2783 0.39375 2858 0.86250
2409 0.05625 2484 0.52500 2559 0.99375 2634 0.46250 2709 0.93125 2784 0.40000 2859 0.86875
2410 0.06250 2485 0.53125 2560 929.00000 2635 0.46875 2710 0.93750 2785 0.40625 2860 0.87500
2411 0.06875 2486 0.53750 2561 0.00625 2636 0.47500 2711 0.94375 2786 0.41250 2861 0.88125
2412 0.07500 2487 0.54375 2562 0.01250 2637 0.48125 2712 0.95000 2787 0.41875 2862 0.88750
2413 0.08125 2488 0.55000 2563 0.01875 2638 0.48750 2713 0.95625 2788 0.42500 2863 0.89375
2414 0.08750 2489 0.55625 2564 0.02500 2639 0.49375 2714 0.96250 2789 0.43125 2864 0.90000
2415 0.09375 2490 0.56250 2565 0.03125 2640 929.50000 2715 0.96875 2790 0.43750 2865 0.90625
2416 0.10000 2491 0.56875 2566 0.03750 2641 0.50625 2716 0.97500 2791 0.44375 2866 0.91250
2417 0.10625 2492 0.57500 2567 0.04375 2642 0.51250 2717 0.98125 2792 0.45000 2867 0.91875
2418 0.11250 2493 0.58125 2568 0.05000 2643 0.51875 2718 0.98750 2793 0.45625 2868 0.92500
2419 0.11875 2494 0.58750 2569 0.05625 2644 0.52500 2719 0.99375 2794 0.46250 2869 0.93125
2420 0.12500 2495 0.59375 2570 0.06250 2645 0.53125 2720 930.00000 2795 0.46875 2870 0.93750
2421 0.13125 2496 0.60000 2571 0.06875 2646 0.53750 2721 0.00625 2796 0.47500 2871 0.94375
2422 0.13750 2497 0.60625 2572 0.07500 2647 0.54375 2722 0.01250 2797 0.48125 2872 0.95000
2423 0.14375 2498 0.61250 2573 0.08125 2648 0.55000 2723 0.01875 2798 0.48750 2873 0.95625
2424 0.15000 2499 0.61875 2574 0.08750 2649 0.55625 2724 0.02500 2799 0.49375 2874 0.96250
2425 0.15625 2500 0.62500 2575 0.09375 2650 0.56250 2725 0.03125 2800 930.50000 2875 0.96875
2426 0.16250 2501 0.63125 2576 0.10000 2651 0.56875 2726 0.03750 2801 0.50625 2876 0.97500
2427 0.16875 2502 0.63750 2577 0.10625 2652 0.57500 2727 0.04375 2802 0.51250 2877 0.98125
2428 0.17500 2503 0.64375 2578 0.11250 2653 0.58125 2728 0.05000 2803 0.51875 2878 0.98750
2429 0.18125 2504 0.65000 2579 0.11875 2654 0.58750 2729 0.05625 2804 0.52500 2879 0.99375
2430 0.18750 2505 0.65625 2580 0.12500 2655 0.59375 2730 0.06250 2805 0.53125 2880 931.00000
2431 0.19375 2506 0.66250 2581 0.13125 2656 0.60000 2731 0.06875 2806 0.53750 2881 0.00625
2432 0.20000 2507 0.66875 2582 0.13750 2657 0.60625 2732 0.07500 2807 0.54375 2882 0.01250
2433 0.20625 2508 0.67500 2583 0.14375 2658 0.61250 2733 0.08125 2808 0.55000 2883 0.01875
2434 0.21250 2509 0.68125 2584 0.15000 2659 0.61875 2734 0.08750 2809 0.55625 2884 0.02500
2435 0.21875 2510 0.68750 2585 0.15625 2660 0.62500 2735 0.09375 2810 0.56250 2885 0.03125
2436 0.22500 2511 0.69375 2586 0.16250 2661 0.63125 2736 0.10000 2811 0.56875 2886 0.03750
2437 0.23125 2512 0.70000 2587 0.16875 2662 0.63750 2737 0.10625 2812 0.57500 2887 0.04375
2438 0.23750 2513 0.70625 2588 0.17500 2663 0.64375 2738 0.11250 2813 0.58125 2888 0.05000
2439 0.24375 2514 0.71250 2589 0.18125 2664 0.65000 2739 0.11875 2814 0.58750 2889 0.05625
2440 928.25000 2515 0.71875 2590 0.18750 2665 0.65625 2740 0.12500 2815 0.59375 2890 0.06250
2441 0.25625 2516 0.72500 2591 0.19375 2666 0.66250 2741 0.13125 2816 0.60000 2891 0.06875
2442 0.26250 2517 0.73125 2592 0.20000 2667 0.66875 2742 0.13750 2817 0.60625 2892 0.07500
2443 0.26875 2518 0.73750 2593 0.20625 2668 0.67500 2743 0.14375 2818 0.61250 2893 0.08125
2444 0.27500 2519 0.74375 2594 0.21250 2669 0.68125 2744 0.15000 2819 0.61875 2894 0.08750
2445 0.28125 2520 928.75000 2595 0.21875 2670 0.68750 2745 0.15625 2820 0.62500 2895 0.09375
2446 0.28750 2521 0.75625 2596 0.22500 2671 0.69375 2746 0.16250 2821 0.63125 2896 0.10000
2447 0.29375 2522 0.76250 2597 0.23125 2672 0.70000 2747 0.16875 2822 0.63750 2897 0.10625
2448 0.30000 2523 0.76875 2598 0.23750 2673 0.70625 2748 0.17500 2823 0.64375 2898 0.11250
2449 0.30625 2524 0.77500 2599 0.24375 2674 0.71250 2749 0.18125 2824 0.65000 2899 0.11875
2450 0.31250 2525 0.78125 2600 929.25000 2675 0.71875 2750 0.18750 2825 0.65625 2900 0.12500
2451 0.31875 2526 0.78750 2601 0.25625 2676 0.72500 2751 0.19375 2826 0.66250 2901 0.13125
2452 0.32500 2527 0.79375 2602 0.26250 2677 0.73125 2752 0.20000 2827 0.66875 2902 0.13750
2453 0.33125 2528 0.80000 2603 0.26875 2678 0.73750 2753 0.20625 2828 0.67500 2903 0.14375
2454 0.33750 2529 0.80625 2604 0.27500 2679 0.74375 2754 0.21250 2829 0.68125 2904 0.1500
2455 0.34375 2530 0.81250 2605 0.28125 2680 929.75000 2755 0.21875 2830 0.68750 2905 0.15625
2456 0.35000 2531 0.81875 2606 0.28750 2681 0.75625 2756 0.22500 2831 0.69375 2906 0.16250
2457 0.35625 2532 0.82500 2607 0.29375 2682 0.76250 2757 0.23125 2832 0.70000 2907 0.16875
2458 0.36250 2533 0.83125 2608 0.30000 2683 0.76875 2758 0.23750 2833 0.70625 2908 0.17500
2459 0.36875 2534 0.83750 2609 0.30625 2684 0.77500 2759 0.24375 2834 0.71250 2909 0.18125
2460 0.37500 2535 0.84375 2610 0.31250 2685 0.78125 2760 930.25000 2835 0.71875 2910 0.18750
2461 0.38125 2536 0.85000 2611 0.31875 2686 0.78750 2761 0.25625 2836 0.72500 2911 0.19375
2462 0.38750 2537 0.85625 2612 0.32500 2687 0.79375 2762 0.26250 2837 0.73125 2912 0.20000
2463 0.39375 2538 0.86250 2613 0.33125 2688 0.80000 2763 0.26875 2838 0.73750 2913 0.20625
2464 0.40000 2539 0.86875 2614 0.33750 2689 0.80625 2764 0.27500 2839 0.74375 2914 0.21250
2465 0.40625 2540 0.87500 2615 0.34375 2690 0.81250 2765 0.28125 2840 930.75000 2915 0.21875
2466 0.41250 2541 0.88125 2616 0.35000 2691 0.81875 2766 0.28750 2841 0.75625 2916 0.22500
2467 0.41875 2542 0.88750 2617 0.35625 2692 0.82500 2767 0.29375 2842 0.76250 2917 0.23125
2468 0.42500 2543 0.89375 2618 0.36250 2693 0.83125 2768 0.30000 2843 0.76875 2918 0.23750
2469 0.43125 2544 0.90000 2619 0.36875 2694 0.83750 2769 0.30625 2844 0.77500 2919 0.24375
2470 0.43750 2545 0.90625 2620 0.37500 2695 0.84375 2770 0.31250 2845 0.78125 2920 931.25000
2471 0.44375 2546 0.91250 2621 0.38125 2696 0.85000 2771 0.31875 2846 0.78750 2921 0.25625
2472 0.45000 2547 0.91875 2622 0.38750 2697 0.85625 2772 0.32500 2847 0.79375 2922 0.26250
2473 0.45625 2548 0.92500 2623 0.39375 2698 0.86250 2773 0.33125 2848 0.80000 2923 0.26875
2474 0.46250 2549 0.93125 2624 0.40000 2699 0.86875 2774 0.33750 2849 0.80625 2924 0.27500
DEDANIELS
ELECTRONICS
1-2 UHF Tx Channel Designation Tables UT-3 928 - 935 MHz
U(R/T)-3/900 Channel Designation Table: 896 to 902 MHz, 6.25 kHz Increments (continued)
Chan. Freq. Chan. Freq. Chan. Freq. Chan. Freq. Chan. Freq. Chan. Freq. Chan. Freq.
Num. (MHz) Num. (MHz) Num. (MHz) Num. (MHz) Num. (MHz) Num. (MHz) Num. (MHz)
2925 931.28125 3000 931.75000 3075 932.21875 3150 932.68750 3225 933.15625 3300 933.62500 3375 934.09375
2926 0.28750 3001 0.75625 3076 0.22500 3151 0.69375 3226 0.16250 3301 0.63125 3376 0.10000
2927 0.29375 3002 0.76250 3077 0.23125 3152 0.70000 3227 0.16875 3302 0.63750 3377 0.10625
2928 0.30000 3003 0.76875 3078 0.23750 3153 0.70625 3228 0.17500 3303 0.64375 3378 0.11250
2929 0.30625 3004 0.77500 3079 0.24375 3154 0.71250 3229 0.18125 3304 0.65000 3379 0.11875
2930 0.31250 3005 0.78125 3080 932.25000 3155 0.71875 3230 0.18750 3305 0.65625 3380 0.12500
2931 0.31875 3006 0.78750 3081 0.25625 3156 0.72500 3231 0.19375 3306 0.66250 3381 0.13125
2932 0.32500 3007 0.79375 3082 0.26250 3157 0.73125 3232 0.20000 3307 0.66875 3382 0.13750
2933 0.33125 3008 0.80000 3083 0.26875 3158 0.73750 3233 0.20625 3308 0.67500 3383 0.14375
2934 0.33750 3009 0.80625 3084 0.27500 3159 0.74375 3234 0.21250 3309 0.68125 3384 0.15000
2935 0.34375 3010 0.81250 3085 0.28125 3160 932.75000 3235 0.21875 3310 0.68750 3385 0.15625
2936 0.35000 3011 0.81875 3086 0.28750 3161 0.75625 3236 0.22500 3311 0.69375 3386 0.16250
2937 0.35625 3012 0.82500 3087 0.29375 3162 0.76250 3237 0.23125 3312 0.70000 3387 0.16875
2938 0.36250 3013 0.83125 3088 0.30000 3163 0.76875 3238 0.23750 3313 0.70625 3388 0.17500
2939 0.36875 3014 0.83750 3089 0.30625 3164 0.77500 3239 0.24375 3314 0.71250 3389 0.18125
2940 0.37500 3015 0.84375 3090 0.31250 3165 0.78125 3240 933.25000 3315 0.71875 3390 0.18750
2941 0.38125 3016 0.85000 3091 0.31875 3166 0.78750 3241 0.25625 3316 0.72500 3391 0.19375
2942 0.38750 3017 0.85625 3092 0.32500 3167 0.79375 3242 0.26250 3317 0.73125 3392 0.20000
2943 0.39375 3018 0.86250 3093 0.33125 3168 0.80000 3243 0.26875 3318 0.73750 3393 0.20625
2944 0.40000 3019 0.86875 3094 0.33750 3169 0.80625 3244 0.27500 3319 0.74375 3394 0.21250
2945 0.40625 3020 0.87500 3095 0.34375 3170 0.81250 3245 0.28125 3320 933.75000 3395 0.21875
2946 0.41250 3021 0.88125 3096 0.35000 3171 0.81875 3246 0.28750 3321 0.75625 3396 0.22500
2947 0.41875 3022 0.88750 3097 0.35625 3172 0.82500 3247 0.29375 3322 0.76250 3397 0.23125
2948 0.42500 3023 0.89375 3098 0.36250 3173 0.83125 3248 0.30000 3323 0.76875 3398 0.23750
2949 0.43125 3024 0.90000 3099 0.36875 3174 0.83750 3249 0.30625 3324 0.77500 3399 0.24375
2950 0.43750 3025 0.90625 3100 0.37500 3175 0.84375 3250 0.31250 3325 0.78125 3400 934.25000
2951 0.44375 3026 0.91250 3101 0.38125 3176 0.85000 3251 0.31875 3326 0.78750 3401 0.25625
2952 0.45000 3027 0.91875 3102 0.38750 3177 0.85625 3252 0.32500 3327 0.79375 3402 0.26250
2953 0.45625 3028 0.92500 3103 0.39375 3178 0.86250 3253 0.33125 3328 0.80000 3403 0.26875
2954 0.46250 3029 0.93125 3104 0.40000 3179 0.86875 3254 0.33750 3329 0.80625 3404 0.27500
2955 0.46875 3030 0.93750 3105 0.40625 3180 0.87500 3255 0.34375 3330 0.81250 3405 0.28125
2956 0.47500 3031 0.94375 3106 0.41250 3181 0.88125 3256 0.35000 3331 0.81875 3406 0.28750
2957 0.48125 3032 0.95000 3107 0.41875 3182 0.88750 3257 0.35625 3332 0.82500 3407 0.29375
2958 0.48750 3033 0.95625 3108 0.42500 3183 0.89375 3258 0.36250 3333 0.83125 3408 0.30000
2959 0.49375 3034 0.96250 3109 0.43125 3184 0.90000 3259 0.36875 3334 0.83750 3409 0.30625
2960 931.50000 3035 0.96875 3110 0.43750 3185 0.90625 3260 0.37500 3335 0.84375 3410 0.31250
2961 0.50625 3036 0.97500 3111 0.44375 3186 0.91250 3261 0.38125 3336 0.85000 3411 0.31875
2962 0.51250 3037 0.98125 3112 0.45000 3187 0.91875 3262 0.38750 3337 0.85625 3412 0.32500
2963 0.51875 3038 0.98750 3113 0.45625 3188 0.92500 3263 0.39375 3338 0.86250 3413 0.33125
2964 0.52500 3039 0.99375 3114 0.46250 3189 0.93125 3264 0.40000 3339 0.86875 3414 0.33750
2965 0.53125 3040 932.00000 3115 0.46875 3190 0.93750 3265 0.40625 3340 0.87500 3415 0.34375
2966 0.53750 3041 0.00625 3116 0.47500 3191 0.94375 3266 0.41250 3341 0.88125 3416 0.35000
2967 0.54375 3042 0.01250 3117 0.48125 3192 0.95000 3267 0.41875 3342 0.88750 3417 0.35625
2968 0.55000 3043 0.01875 3118 0.48750 3193 0.95625 3268 0.42500 3343 0.89375 3418 0.36250
2969 0.55625 3044 0.02500 3119 0.49375 3194 0.96250 3269 0.43125 3344 0.90000 3419 0.36875
2970 0.56250 3045 0.03125 3120 932.50000 3195 0.96875 3270 0.43750 3345 0.90625 3420 0.37500
2971 0.56875 3046 0.03750 3121 0.50625 3196 0.97500 3271 0.44375 3346 0.91250 3421 0.38125
2972 0.57500 3047 0.04375 3122 0.51250 3197 0.98125 3272 0.45000 3347 0.91875 3422 0.38750
2973 0.58125 3048 0.05000 3123 0.51875 3198 0.98750 3273 0.45625 3348 0.92500 3423 0.39375
2974 0.58750 3049 0.05625 3124 0.52500 3199 0.99375 3274 0.46250 3349 0.93125 3424 0.40000
2975 0.59375 3050 0.06250 3125 0.53125 3200 933.00000 3275 0.46875 3350 0.93750 3425 0.40625
2976 0.60000 3051 0.06875 3126 0.53750 3201 0.00625 3276 0.47500 3351 0.94375 3426 0.41250
2977 0.60625 3052 0.07500 3127 0.54375 3202 0.01250 3277 0.48125 3352 0.95000 3427 0.41875
2978 0.61250 3053 0.08125 3128 0.55000 3203 0.01875 3278 0.48750 3353 0.95625 3428 0.42500
2979 0.61875 3054 0.08750 3129 0.55625 3204 0.02500 3279 0.49375 3354 0.96250 3429 0.43125
2980 0.62500 3055 0.09375 3130 0.56250 3205 0.03125 3280 933.50000 3355 0.96875 3430 0.43750
2981 0.63125 3056 0.10000 3131 0.56875 3206 0.03750 3281 0.50625 3356 0.97500 3431 0.44375
2982 0.63750 3057 0.10625 3132 0.57500 3207 0.04375 3282 0.51250 3357 0.98125 3432 0.45000
2983 0.64375 3058 0.11250 3133 0.58125 3208 0.05000 3283 0.51875 3358 0.98750 3433 0.45625
2984 0.65000 3059 0.11875 3134 0.58750 3209 0.05625 3284 0.52500 3359 0.99375 3434 0.46250
2985 0.65625 3060 0.12500 3135 0.59375 3210 0.06250 3285 0.53125 3360 934.00000 3435 0.46875
2986 0.66250 3061 0.13125 3136 0.60000 3211 0.06875 3286 0.53750 3361 0.00625 3436 0.47500
2987 0.66875 3062 0.13750 3137 0.60625 3212 0.07500 3287 0.54375 3362 0.01250 3437 0.48125
2988 0.67500 3063 0.14375 3138 0.61250 3213 0.08125 3288 0.55000 3363 0.01875 3438 0.48750
2989 0.68125 3064 0.15000 3139 0.61875 3214 0.08750 3289 0.55625 3364 0.02500 3439 0.49375
2990 0.68750 3065 0.15625 3140 0.62500 3215 0.09375 3290 0.56250 3365 0.03125 3440 934.50000
2991 0.69375 3066 0.16250 3141 0.63125 3216 0.10000 3291 0.56875 3366 0.03750 3441 0.50625
2992 0.70000 3067 0.16875 3142 0.63750 3217 0.10625 3292 0.57500 3367 0.04375 3442 0.51250
2993 0.70625 3068 0.17500 3143 0.64375 3218 0.11250 3293 0.58125 3368 0.05000 3443 0.51875
2994 0.71250 3069 0.18125 3144 0.65000 3219 0.11875 3294 0.58750 3369 0.05625 3444 0.52500
2995 0.71875 3070 0.18750 3145 0.65625 3220 0.12500 3295 0.59375 3370 0.06250 3445 0.53125
2996 0.72500 3071 0.19375 3146 0.66250 3221 0.13125 3296 0.60000 3371 0.06875 3446 0.53750
2997 0.73125 3072 0.20000 3147 0.66875 3222 0.13750 3297 0.60625 3372 0.07500 3447 0.54375
2998 0.73750 3073 0.20625 3148 0.67500 3223 0.14375 3298 0.61250 3373 0.08125 3448 0.55000
2999 0.74375 3074 0.21250 3149 0.68125 3224 0.15000 3299 0.61875 3374 0.08750 3449 0.55625
DEDANIELS
ELECTRONICS
UHF Tx Channel Designation Tables UT-3 928 - 935 MHz 1-3
Chan. Freq. Chan. Freq. Chan. Freq. Chan. Freq. Chan. Freq. Chan. Freq. Chan. Freq.
Num. (MHz) Num. (MHz) Num. (MHz) Num. (MHz) Num. (MHz) Num. (MHz) Num. (MHz)
3450 934.56250
3451 0.56875
3452 0.57500
3453 0.58125
3454 0.58750
3455 0.59375
3456 0.60000
3457 0.60625
3458 0.61250
3459 0.61875
3460 0.62500
3461 0.63125
3462 0.63750
3463 0.64375
3464 0.65000
3465 0.65625
3466 0.66250
3467 0.66875
3468 0.67500
3469 0.68125
3470 0.68750
3471 0.69375
3472 0.70000
3473 0.70625
3474 0.71250
3475 0.71875
3476 0.72500
3477 0.73125
3478 0.73750
3479 0.74375
3480 934.75000
3481 0.75625
3482 0.76250
3483 0.76875
3484 0.77500
3485 0.78125
3486 0.78750
3487 0.79375
3488 0.80000
3489 0.80625
3490 0.81250
3491 0.81875
3492 0.82500
3493 0.83125
3494 0.83750
3495 0.84375
3496 0.85000
3497 0.85625
3498 0.86250
3499 0.86875
3500 0.87500
3501 0.88125
3502 0.88750
3503 0.89375
3504 0.90000
3505 0.90625
3506 0.91250
3507 0.91875
3508 0.92500
3509 0.93125
3510 0.93750
3511 0.94375
3512 0.95000
3513 0.95625
3514 0.96250
3515 0.96875
3516 0.97500
3517 0.98125
3518 0.98750
3519 0.99375
3520 935.00000
DEDANIELS
ELECTRONICS
2-1 UHF Tx Channel Designation Tables UT-3 928 - 935 MHz
2 REVISION HISTORY
ISSUE DATE DESCRIPTION AND (REASON)
1 Jan 2003 • Preliminary.
DEDANIELS
ELECTRONICS
2-2 UHF Tx Channel Designation Tables UT-3 928 - 935 MHz
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