HARRIS M7200 M7200 700/800 MHz Mobile Radio User Manual manual 2

Harris Corporation M7200 700/800 MHz Mobile Radio manual 2

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Installation Manual

MM-007024-001

Sep-05

M7200 Series Mobile Radio

Trunk-Mount Full-Duplex

Mobile Radio with Control Head

for OpenSky Radio Networks

MM-007024-001

MANUAL REVISION HISTORY

REVISION DATE REASON FOR CHANGE

— September 2005 Initial release.

M/A-COM Technical Publications would particularly appreciate feedback on any errors found in this document and

suggestions on how the document could be improved. Submit your comments and suggestions to:

Wireless Systems Business Unit

M/A-COM, Inc. or fax your comments to: (434) 455-6851

Technical Publications

221 Jefferson Ridge Parkway or e-mail us at: techpubs@tycoelectronics.com

Lynchburg, VA 24501

CREDITS

M/A-COM, OpenSky and EDACS are registered trademarks of M/A-COM, Inc.

Microsoft and Windows are registered trademarks of Microsoft Corporation.

All other brand and product names are trademarks, registered trademarks, or service marks of their respective holders.

NOTICE

This device is made under license under one or more of the following U.S. Patents: 4,590,473; 4,636,791; 5,148,482;

5,185,796; 5,271,017; 5,377,229; 4,716,407; 4,972,460; 5,502,767; 5,146,497; 5,164,986; 5,185,795.

The voice coding technology embodied in this product is protected by intellectual property rights including patent rights,

copyrights, and trade secrets of Digital Voice Systems, Inc. The user of this technology is explicitly prohibited from

attempting to decompile, reverse engineer, or disassemble the Object Code, or in any other way convert the Object Code into

human-readable form.

This manual covers M/A-COM products manufactured and sold by M/A-COM, Inc.

Repairs to this equipment should be made only by an authorized service technician or facility designated by the supplier. Any

repairs, alterations or substitution of recommended parts made by the user to this equipment not approved by the

manufacturer could void the user’s authority to operate the equipment in addition to the manufacturer’s warranty.

The software contained in this device is copyrighted by M/A-COM, Inc. Unpublished rights are reserved under the copyright

laws of the United States.

This manual is published by M/A-COM, Inc. without any warranty. Improvements and changes to this manual necessitated by typographical errors,

inaccuracies of current information, or improvements to programs and/or equipment, may be made by M/A-COM, Inc., at any time and without notice. Such

changes will be incorporated into new editions of this manual. No part of this manual may be reproduced or transmitted in any form or by any means,

electronic or mechanical, including photocopying and recording, for any purpose, without the express written permission of M/A-COM, Inc.

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TABLE OF CONTENTS Page

1 SAFETY INFORMATION .......................................................................................................... 5

1.1 SYMBOLS USED IN THIS MANUAL................................................................................... 5

1.2 RF ENERGY EXPOSURE AWARENESS AND CONTROL INFORMATION FOR FCC

OCCUPATIONAL USE REQUIREMENTS ................................................................... 5

1.2.1 Federal Communications Commission Regulations ..................................................................6

1.3 COMPLIANCE WITH RF EXPOSURE STANDARDS......................................................... 6

1.3.1 Mobile Antennas ........................................................................................................................7

1.3.2 Approved Accessories ................................................................................................................7

1.3.3 Contact Information...................................................................................................................7

1.4 OCCUPATIONAL SAFETY GUIDELINES AND SAFETY TRAINING INFORMATION....... 7

1.5 COMMON HAZARDS ......................................................................................................... 8

2 SPECIFICATIONS..................................................................................................................... 9

2.1 GENERAL ........................................................................................................................... 9

2.2 TRANSCEIVER................................................................................................................... 9

2.3 REGULATORY ................................................................................................................. 10

3 INTRODUCTION .....................................................................................................................11

3.1 GENERAL DESCRIPTION................................................................................................ 11

3.2 RELATED DOCUMENTS.................................................................................................. 13

3.3 CONTACTING M/A-COM FOR TECHNICAL ASSISTANCE............................................ 13

4 UNPACKING AND CHECKING EQUIPMENT........................................................................14

4.1 MATERIALS......................................................................................................................14

4.2 MATERIAL INSPECTION ................................................................................................. 17

5 PLANNING THE INSTALLATION........................................................................................... 18

5.1 GENERAL INFORMATION............................................................................................... 18

5.2 TOOLS REQUIRED .......................................................................................................... 18

5.3 LOCATING COMPONENTS ............................................................................................. 20

6 MOUNTING THE MOBILE RADIO IN THE TRUNK............................................................... 21

6.1 BRACKET INSTALLATION............................................................................................... 21

6.2 MOUNT THE RADIO INTO THE BRACKET ..................................................................... 23

7 ANTENNA INSTALLATION.................................................................................................... 24

7.1 ANTENNA MOUNTING LOCATIONS............................................................................... 24

7.1.1 Direct Center or Center-Rear of Rooftop.................................................................................25

7.1.2 Center of Trunk Lid..................................................................................................................25

7.2 ANTENNA INSTALLATION PROCEDURE....................................................................... 25

7.2.1 Install and Connect Mobile Radio Antenna .............................................................................25

7.2.2 Install and Connect GPS Antenna............................................................................................26

8 RADIO DC POWER INSTALLATION.....................................................................................27

8.1 ON/OFF POWER WIRING CONFIGURATIONS .............................................................. 27

8.2 POWER INSTALLATION PROCEDURE .......................................................................... 28

8.2.1 Install Main Fuse Holder, Time-Delay Relay, and Fuse Block................................................28

8.2.2 Make Ground Connections at Fuse Block and Time-Delay Relay...........................................30

8.2.3 Complete Fuse Block and DC Power Cable Connections .......................................................31

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TABLE OF CONTENTS Page

9 CONTROL HEAD INSTALLATION.........................................................................................33

9.1 GENERAL INFORMATION............................................................................................... 33

9.2 BRACKET INSTALLATION...............................................................................................34

9.2.1 Standard U-Shaped Bracket.....................................................................................................34

9.2.2 Mounting Pedestal (Optional)..................................................................................................34

9.3 ATTACH CONTROL HEAD TO BRACKET.......................................................................34

9.4 CAN CONNECTIONS .......................................................................................................35

9.4.1 General Information.................................................................................................................35

9.4.2 Make CAN Termination............................................................................................................35

9.4.3 Connect Control Head to Radio Via CAN Cable .....................................................................36

9.5 CONTROL HEAD POWER CABLE INSTALLATION ........................................................36

9.5.1 Install Fuse Holder and DC Power Cable and Make Power Connection................................37

9.5.2 Make Ground Connection ........................................................................................................37

9.5.3 Connect DC Power Cable’s White Wire ..................................................................................37

10 DATA-ONLY RADIO CONNECTIONS ...................................................................................42

11 MICROPHONE INSTALLATION.............................................................................................43

11.1 CH-103 AND CH-103PA CONNECTIONS........................................................................43

11.2 COMMON MICROPHONE INTERFACE CONNECTIONS (CH-103PA ONLY)................43

12 SPEAKER INSTALLATION ....................................................................................................44

13 OPTIONAL CABLES............................................................................................................... 45

13.1 FULL-DATA I/O OPTION CABLE...................................................................................... 45

13.2 PROGRAMMING OPTION CABLE................................................................................... 46

14 GPS NMEA-FORMATTED SERIAL DATA CONNECTION ...................................................48

15 INITIAL POWER-UP TEST .....................................................................................................49

16 PERFORMANCE TESTS ........................................................................................................50

16.1 CHANGING OPERATING MODE FOR TESTS ................................................................51

16.2 REQUIRED TEST EQUIPMENT.......................................................................................52

16.3 TESTING WITH A DUMMY LOAD ....................................................................................52

16.4 TESTING WITH THE ANTENNA.......................................................................................54

16.5 TEST PERFORMANCE DATA FORM ..............................................................................57

17 COMPLETE THE INSTALLATION .........................................................................................59

18 WARRANTY ............................................................................................................................60

19 WIRING DIAGRAM: MOBILE RADIO & CH-103 CONTROL HEAD ....................................61

20 WIRING DIAGRAM: MOBILE RADIO & CH-103PA CONTROL HEAD ...............................63

(Continued)

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1 SAFETY INFORMATION

1.1 SYMBOLS USED IN THIS MANUAL

The following symbols are used throughout this manual:

WARNING

The WARNING symbol calls attention to a procedure, practice, or the like, which, if

not correctly performed or adhered to, could result in personal injury. Do not proceed

beyond a WARNING symbol until the conditions identified are fully understood or met.

CAUTION

The CAUTION symbol calls attention to an operating procedure, practice, or the like,

which, if not performed correctly or adhered to, could result in damage to the

equipment or severely degrade equipment performance.

NOTE

The NOTE symbol calls attention to supplemental information, which may improve

system performance or clarify a process or procedure.

1.2 RF ENERGY EXPOSURE AWARENESS AND CONTROL

INFORMATION FOR FCC OCCUPATIONAL USE REQUIREMENTS

Before using the mobile two-way radio, read this important RF energy awareness and control

information and operational instructions to ensure compliance with RF exposure guidelines.

NOTE

This radio is intended for use in occupational/controlled conditions, where users have

full knowledge of their exposure and can exercise control over their exposure to remain

below RF exposure limits. This radio is NOT authorized for general population,

consumer, or any other use.

CAUTION

Changes or modifications not expressly approved by M/A-COM, Inc. could void the

user's authority to operate the equipment.

This two-way radio uses electromagnetic energy in the radio frequency (RF) spectrum to provide

communications between two or more users over a distance. It uses RF energy or radio waves to send and

receive calls. RF energy is one form of electromagnetic energy. Other forms include, but are not limited

to, electric power, sunlight, and x-rays. RF energy, however, should not be confused with these other

forms of electromagnetic energy, which, when used improperly, can cause biological damage. Very high

levels of x-rays, for example, can damage tissues and genetic material.

Experts in science, engineering, medicine, health, and industry work with organizations to develop

standards for exposure to RF energy. These standards provide recommended levels of RF exposure for

both workers and the general public. These recommended RF exposure levels include substantial margins

of protection. All two-way radios marketed in North America are designed, manufactured, and tested to

ensure they meet government-established RF exposure levels. In addition, manufacturers also recommend

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specific operating instructions to users of two-way radios. These instructions are important because they

inform users about RF energy exposure and provide simple procedures on how to control it. Please refer

to the following websites for more information on what RF energy exposure is and how to control your

exposure to assure compliance with established RF exposure limits:

http://www.fcc.gov/oet/rfsafety/rf-faqs.html

http://www.osha.gov./SLTC/radiofrequencyradiation/index.html

1.2.1 Federal Communications Commission Regulations

The M7200 two-way mobile radio is designed and tested to comply with the FCC RF energy exposure

limits for mobile two-way radios before it can be marketed in the United States. When two-way radios are

used as a consequence of employment, the FCC requires users to be fully aware of and able to control

their exposure to meet occupational requirements. Exposure awareness can be facilitated by the use of a

label directing users to specific user awareness information. The radio has an RF exposure product label.

Also, this Installation Manual and the applicable Operator’s Manual include information and operating

instructions required to control your RF exposure and to satisfy compliance requirements.

1.3 COMPLIANCE WITH RF EXPOSURE STANDARDS

The M7200 two-way mobile radio is designed and tested to comply with a number of national and

international standards and guidelines regarding human exposure to RF electromagnetic energy. This

radio complies with the IEEE and ICNIRP exposure limits for occupational/controlled RF exposure

environment at duty-cycle times of up to 50% (50% transmit, 50% receive), and it is authorized by the

FCC for occupational use. In terms of measuring RF energy for compliance with the FCC exposure

guidelines, the radio’s antenna radiates measurable RF energy only while it is transmitting (talking), not

when it is receiving (listening) or in standby mode.

The M7200 mobile two-way radio complies with the following RF energy exposure standards and

guidelines:

• United States Federal Communications Commission (FCC), Code of Federal Regulations; 47 CFR

§ 2 sub-part J.

• American National Standards Institute (ANSI)/Institute of Electrical and Electronic Engineers (IEEE)

C95.1-1992.

• Institute of Electrical and Electronic Engineers (IEEE) C95.1-1999.

CAUTION

Table 1-1 lists the recommended minimum safe lateral distances for a controlled

environment and for unaware bystanders in an uncontrolled environment, from

transmitting antennas (i.e., monopoles over a ground plane, or dipoles) at rated radio

power for mobile radios installed in a vehicle. Transmit only when unaware bystanders

are at least the uncontrolled recommended minimum safe lateral distance away from

the transmitting antenna.

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Table 1-1: Recommended Minimum Safe Lateral Distance from Transmitting Antenna

RECOMMENDED MINIMUM LATERAL

DISTANCE FROM

TRANSMITTING ANTENNA

ANTENNA PART NUMBERS

(All are 700 & 800 MHz Dual-Band Antennas)

RATED POWER

OF VEHICLE

INSTALLED

MOBILE RADIO CONTROLLED UNCONTROLLED

MAMV-AN3J (3 dBd Gain);

MAMV-AN3K (3 dBd Gain, Elev. Feed);

MAMV-AN3V (3 dBd Gain with GPS Rx) 15 watts 12.6 inches

(32 centimeters) 27.6 inches

(70 centimeters)

1.3.1 Mobile Antennas

The antenna(s) for the radio must be installed in accordance with section 7 in this manual. Refer to Table

1-1 above and/or Figure 7-1 for applicable antenna part numbers. Installation guidelines presented in

section 7 are limited to metal-body motor vehicles or vehicles with appropriate ground planes.

Use only the M/A-COM approved/supplied antenna(s) or an approved replacement antenna. Unauthorized

antennas, modifications, or attachments can cause the FCC RF exposure limits to be exceeded.

1.3.2 Approved Accessories

The radio has been tested and meets FCC RF guidelines when used with M/A-COM accessories supplied

or designated for use with it. Use of other accessories may not ensure compliance with the FCC’s RF

exposure guidelines, and may violate FCC regulations. For a list of approved accessories refer to section 4

in this manual (begins on page 14) and/or M/A-COM’s Products and Services Catalog.

1.3.3 Contact Information

For additional information on RF exposure and other information, contact M/A-COM using one of the

contact links listed in section 3.3 on page 13.

1.4 OCCUPATIONAL SAFETY GUIDELINES AND SAFETY TRAINING

INFORMATION

To ensure bodily exposure to RF electromagnetic energy is within the FCC allowable limits for

occupational use, always adhere to the following basic guidelines:

1. The push-to-talk button should only be depressed when intending to send a voice message.

2. The radio should only be used for necessary work-related communications.

3. The radio should only be used by authorized and trained personnel. It should never be operated by

children.

4. Do not attempt any unauthorized modification to the radio. Changes or modifications to the radio may

cause harmful interference and/or cause it to exceed FCC RF exposure limits. Only qualified

personnel should service the radio.

5. Always use M/A-COM authorized accessories (antennas, control heads, speakers/mics, etc.). Use of

unauthorized accessories can cause the FCC RF exposure compliance requirements to be exceeded.

The information listed above provides the user with information needed to make him or her aware of a RF

exposure, and what to do to assure that this radio operates within the FCC exposure limits of this radio.

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1.5 COMMON HAZARDS

The operator of any mobile radio should be aware of certain hazards common to the operation of

vehicular radio transmissions. Possible hazards include but are not limited to:

1. Explosive Atmospheres

Just as it is dangerous to fuel a vehicle with its motor running, be sure to turn the radio OFF while fueling

the vehicle. If the radio is mounted in the trunk of the vehicle, DO NOT carry containers of fuel in the

trunk.

2. Interference To Vehicular Electronic Systems

Electronic fuel injection systems, electronic anti-skid braking systems, electronic cruise control systems,

etc., are typical of the types of electronic devices that can malfunction due to the lack of protection from

radio frequency (RF) energy present when transmitting. If the vehicle contains such equipment, consult

the dealer for the make of vehicle and enlist his aid in determining if such electronic circuits perform

normally when the radio is transmitting.

3. Electric Blasting Caps

To prevent accidental detonation of electric blasting caps, DO NOT use two-way radio within 1000 feet

(305 meters) of blasting operations. Always obey the “Turn Off Two-Way Radios” signs posted where

electric blasting caps are being used. (OSHA Standard: 1926.900)

4. Radio Frequency Energy

To prevent burns or related physical injury from radio frequency energy, do not operate the transmitter

when anyone outside of the vehicle is within the minimum safe distance from the antenna as specified in

Table 1-1.

5. Vehicles Powered By Liquefied Petroleum (LP) Gas

Radio installation in vehicles powered by liquefied petroleum gas, where the LP gas container is located

in the trunk or other sealed-off space within the interior of the vehicle, must conform to the National Fire

Protection Association Standard NFPA 58. This requires:

a. The space containing radio equipment is isolated by a seal from the space containing the LP gas

container and its fittings.

b. Outside filling connections are used for the LP gas container.

c. The LP gas container space is vented to the outside of the vehicle.

6. Vehicles Equipped With Airbags

For driver and passenger safety, avoid mounting the Control Head (or any other component) above or

near airbag deployment areas. In addition to driver-side and passenger-side front-impact airbags, some

vehicles may also be equipped with side-impact airbags. For occupant safety, verify the location of all

airbags within the vehicle before installing the radio equipment.

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2 SPECIFICATIONS1

2.1 GENERAL

Dimensions, Mobile Radio: 2.8 x 8.8 x 9.3 inches (7.1 x 22.4 x 23.6 centimeters)

(Height x Width x Depth) (Includes bracket but not cables)

Dimensions, Control Head: 2.4 x 7.1 x 2.1 inches (6.10 x 18.03 x 5.33 centimeters)

Weight, Mobile Radio: 8.0 pounds (3.63 kilograms)

Weight, Control Head: 1.5 pounds (0.7 kilograms)

Operating Ambient Temperature Range: -22 to +140° Fahrenheit (-30 to +60° Celsius)

Storage Temperature Range: -40 to +185° Fahrenheit (-40 to +85° Celsius)

DC Supply Voltage Operating Range: +13.6 Vdc ±10% (Normal range per TIA-603)

DC Supply Current Requirements

Receive: 1.5 amps maximum at 0.5-watt speaker audio output

power (includes CH-103/CH-103PA Control Head)

Transmit: 8 amps maximum, 6 amps typical at 15 watts transmit

RF output power (includes CH-103/CH-103PA Control

Head)

Quiescent/Off Current

Mobile Radio: 100 microamps maximum

CH-103/CH-103PA Control Head: 50 milliamps maximum

2.2 TRANSCEIVER

Frequency Ranges

Receive

700 MHz Narrow Bands: 764 to 767 MHz and 773 to 776 MHz

800 MHz Band: 851 to 869 MHz

Transmit

700 MHz Narrow Bands: 794 to 797 MHz and 803 to 806 MHz

800 MHZ Band: 806 to 824 MHz

Transmit Output Power

700 MHz Channels in Half-Duplex Mode: 1 watt to 15 watts (excluding interoperability channels)

700 MHz Interoperability Channels: 300 milliwatts maximum

800 MHz Channels in Full-Duplex Mode: 1 watt to 10 watts (programmable range)

800 MHz Channels in Half-Duplex Mode: 1 watt to 15 watts (programmable range)

Channel Spacing: 12.5 kHz or 25 kHz (mode dependent)

Data Communications Mode: Full-Duplex

Voice Communications Mode: Half-Duplex

Oscillator Stability: ±1.5 ppm with AFC disabled; ±0.5 ppm with AFC

1 These specifications are primarily intended for the use of the installation technician. See the appropriate Specifications

Sheet for the complete specifications.

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Receiver Sensitivity

700 MHz OTP Mode: -111 dBm minimum, -113 dBm typical for 5% BLER

800 MHz OTP Mode: -111 dBm minimum, -112 dBm typical for 5% BLER

700 MHz P25 Mode (TIA-102 Method): -116 dBm minimum, -121 dBm typical for 5% BLER

800 MHz P25 Mode (TIA-102 Method): -116 dBm minimum, -121 dBm typical for 5% BLER

800 MHz OCF Mode (TIA-603 Method): -118 dBm minimum for 12 dB SINAD

700 MHz EDACS Mode: -118 dBm minimum, for 12 dB SINAD

800 MHz EDACS Mode: -118 dBm minimum, for 12 dB SINAD

Receiver Intermodulation Rejection: 70 dB minimum for OCF, P25, and EDACS modes

ACPR Mask

P25 Mode (TIA-102 Method): 67 dBc (minimum)

OCF, OTP and EDACS Modes: FCC Mask G and H compliant

Audio Frequency Response: 300 to 3000 Hz (with <3% audio distortion)

Audio Output Power (Control Head): 10 watts RMS maximum into 4-ohm external speaker;

1 watt into 4-ohm headset

Voice-Coding Method: Adaptive Multi-Band Excitation (AMBE™)

OpenSky Data Rate: 19.2 kbps

2.3 REGULATORY

FCC Type Acceptance: BV8M7200

Applicable FCC Rules: Part 15 and Part 90 (for 700 and 800 MHz)

Industry Canada Certification: 3670A-M7200

Applicable Industry Canada Rules: RSS-119

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3 INTRODUCTION

3.1 GENERAL DESCRIPTION

The M7200 series mobile radios are high-performance full-duplex dual-band digital mobile radios. These

radios can operate on 700 MHz and 800 MHz OpenSky trunked radio networks using the OpenSky

Trunking Protocol (OTP). In the future, the radio will also operate on 800 MHz Enhanced Digital Access

Communications System (EDACS) trunked radio networks, and 800 MHz APCO Project 25 phase I

compliant Common Air Interface (P25 CAI) trunked radio networks. Other future operating modes

include talk-around communications in accordance the APCO Project 25 phase I standard, and

conventional FM repeater-based and FM talk-around voice communications in accordance with the

TIA/EIA-603 conventional land-mobile radio standard.

NOTE

The initial release of this radio only supports operations on 700 MHz and 800 MHz

OpenSky trunked radio networks. Later releases of the radio will add other modes to

support other trunked radio networks, and conventional FM repeater-based and FM

talk-around voice communication modes.

The radio has two models:

• M7250 — Trunk-Mount Full-Duplex Mobile Radio with CH-103 or CH-103PA Control Head

• M7270 — Trunk-Mount Full-Duplex Mobile Radio with CH-721 Control Head. As of the

publication of this manual, this combination is not available.

This manual only covers the installation of the M7250 model mobile radio.

The M7250 model mobile radio is designed to operate in a mobile environment, typically within a motor

vehicle. It must be connected to an external transmit/receive antenna such as one mounted to the vehicle’s

rooftop or trunk lid. In high-power half-duplex mode, the radio’s 800 MHz RF transmit output power is

rated at 15 watts minimum. The high-power limit for 700 MHz interoperability channels operations is

300 milliwatts maximum. This high-power limit guarantees that the 2-watt ERP (effective radiated

power) limit of the 700 MHz interoperability narrowband channels is not exceeded when the radio is

connected to a 6 dB gain antenna. Several different types of external-mount antennas are approved and

available for use with the radio, as listed in Table 1-1 and Table 4-2.

The radio is designed for remote mounting in a motor vehicle’s trunk, or some other preferably

unoccupied section in a vehicle, such as a fire truck’s equipment shelf. It is remotely controlled by one or

more control heads connected to it via a 3-wire Controller Area Network (CAN) link cable. Between the

radio and control head(s), the CAN link carries digitized microphone and speaker audio, controlling data

such as button presses and radio messages, and user data such as that for a mobile data terminal connected

to serial port of the radio or control head. For proper operation, the CAN link must be terminated

appropriately on each end.

Control heads which may be utilized with the radio include the standard CH-103 and the siren/public

address CH-103PA control head. The CH-103PA can interface to an optional Federal Signal Electronic

siren/light control system for broadcasting via a public address (PA) speaker. In multiple control head

installations, control heads are interconnected to the mobile radio in a series (daisy-chain) fashion via

CAN link cables. Other control head models are planned in the future.

The radio must be powered by an external +13.6-volt (nominal) DC power source. In mobile applications,

the motor vehicle’s electrical system is the source of DC power. The control head(s) connected to the

radio is also powered by the same DC power source, but separately fused. When the control head is

powered-up by the operator, it “wakes up” the radio by transmitting data to the radio via the CAN link.

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The radio provides half-duplex voice communications, and both half- and full-duplex data

communications. Voice communication is accomplished via a “push-to-talk” (PTT) type microphone and

a speaker connected to the mobile radio’s control head.

For data communications, the radio has an industry-standard TIA/EIA/RS-232 serial interface port for

connecting optional data-type equipment, such a Mobile Data Terminal (MDT), a laptop PC, a third-party

display, or a key-entry device. This port works seamlessly with equipment from popular manufacturers

and off-the-shelf applications. OpenSky employs User Datagram Protocol over Internet Protocol

(UDP/IP) data packet transfers, providing “plug and play” connectivity for data-type devices.

700 MHz operating bands of the radio include the two 3 MHz wide repeater output bands from 764 to

767 MHz and 773 to 776 MHz, and the two 3 MHz wide repeater input bands from 794 to 797 MHz and

803 to 806 MHz. The mobile can operate only on the narrowband channels within these bands and, as

previously stated, transmit output power is limited to 300 milliwatts.

800 MHz operating bands of the radio include the Specialized Mobile Radio (SMR) and the National

Public Safety Planning Advisory Committee (NPSPAC) radio frequency channels. This includes the 806

to 825 MHz repeater input band and the 851 to 870 MHz band used for repeater output and talk-around

communications. These bands provide a total of over 830 possible channels spread over the

806 - 824 MHz mobile transmission and 851 - 869 MHz mobile reception bands.

The radio has a built-in Global Positioning System (GPS) tracking receiver. GPS provides quick and

accurate unit location information to dispatchers via the radio network. The GPS receiver determines the

unit’s location and the radio transmits it to the radio network. The GPS antenna may be integrated into the

mobile transmit/receive antenna (a “combination” antenna) or it may be separate from the mobile

transmit/receive antenna.

The radio meets or exceeds many tough environmental specifications included within military standard

MIL-STD-810F, automotive industry standard SAE-J1455, the radio industry standard TIA/EIA-603, and

the radio standard established by the U.S. Forest Service.

OpenSky employs Adaptive Multi-Band Excitation (AMBE™) voice-coding technology developed by

Digital Voice Systems, Inc. AMBE allows the radio to deliver exceptional voice quality, even in weak

received signal areas (i.e., “fringe” areas).

OpenSky radio network also uses Time-Division Multiple-Access (TDMA) modulation technology. This

technology allows multiple radio users to share a single RF channel. In addition, a single RF channel can

support simultaneous digital voice and data communications.

This manual contains installation procedures for the mobile radio, and the CH-103 and CH-103PA control

heads. These procedures cover the mounting and cabling of the equipment as well as the testing of the

radio and control head. Interconnect wiring diagrams are included at the rear of this manual.

CAUTION

M/A-COM recommends the buyer use only a M/A-COM authorized

representative to install and service this product. The warranties provided to the

buyer under the terms of sale shall be null and void if this product is installed or

serviced improperly, and M/A-COM shall have no further obligation to the buyer for

any damage caused to the product or to any person or personal property.

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3.2 RELATED DOCUMENTS

The following documents contain additional information:

• Operator’s Manual: MM23016

• Maintenance Manual: MM20117

3.3 CONTACTING M/A-COM FOR TECHNICAL ASSISTANCE

Should the mobile radio or control head require repair, or if there are questions or concerns about the

installation of this equipment, contact M/A-COM’s Technical Assistance Center (TAC) using the

following telephone numbers or email address:

• U.S. and Canada: 1-800-528-7711 (toll free)

• International: 434-385-2400

• Fax: 434-455-6712

• Email: tac@tycoelectronics.com

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4 UNPACKING AND CHECKING EQUIPMENT

4.1 MATERIALS

An M7250 mobile radio installation consists of two (2) main components:

• Trunk-Mount Full-Duplex 700/800 MHz Mobile Radio Unit (MRU), part number RU25011-0001

• CH-103 Control Head, part number MACDOS0003 or

CH-103PA Control Head, part number MACDOS0009

Installation Kit MAMV-ZN6X can be used to install the mobile radio, or individual components can be

purchased separately as needed. Table 4-1 lists the parts included in the kit. Table 4-2 lists part numbers

for radio options and accessories. Table 4-3 lists the parts included in CH-103 Installation Kit MAMV-

ZN6Y. Table 4-4 includes optional parts available for CH-103 and CH-103PA installations.

Table 4-1: Installation Kit MAMV-ZN6X

ITEM QTY PART NUMBER DESCRIPTION

1 1 1000003678 Bracket, Base

2 1 FS23057 Kit, Fuse Distribution Rail. Includes (1) Fuse Distribution Rail

Assembly, (1) ATC Fuse Holder, (1) 15-Amp ATC Fuse, (1)

30-Amp ATC Fuse, 20 Feet of 10-AWG Red Wire, 1 Foot of

10-AWG Black Wire, (1) Moisture-Resistant Butt Splice, and

(2) 3/8-Inch Ring Terminals.

3 1 MAMROS0075-N1210 Cable, DC Power: 12-AWG, 10-Foot, Straight Connector

4 1 MACDOS0010 Terminator, CAN; 3-pin

5 2 AD00006 Screws: #8-32 Pan-Head (Package of 4)

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Table 4-2: Additional Options and Accessories

PART NUMBER DESCRIPTION

MACDOS0003 CH-103 Control Head

MACDOS0009 CH-103PA Control Head. Includes Siren/PA functionality.

MAMV-ZN7P Kit, Accessory; Remote-Mount for Data-Only Radio. Includes (1) Base

Bracket 1000003678, (1) 10-foot DC Power Cable, (2) CAN Terminators

(1) Fuse Distribution Rail Kit FS23057 and (1) Vehicle Fuse Tap FS24473.

MAMROS0044 Kit, Trunk Mounting. Includes base bracket, screws.

MACDOS0010 Terminator, CAN; 3-pin

MAMROS0075-N1210 Cable, DC Power; 12-AWG, 10 Feet, Straight Connector

MAMROS0075-N1220 Cable, DC Power; 12-AWG, 20 Feet, Straight Connector

MAMROS0075-R1210 Cable, DC Power; 12-AWG, 10 Feet, Right-Angle Connector

MAMROS0075-R1220 Cable, DC Power; 12-AWG, 20 Feet, Right-Angle Connector

1000022242-0001 Cable, Full-Data I/O Option

1000022242-0002 Cable, Programming Option

MAMV-AN3J Antenna, 700/800 MHz; 3 dB Gain, Rooftop-Mount

MAMV-AN3K Antenna, 700/800 MHz; 3 dB Gain, Elevated-Feed, Rooftop-Mount

MAMV-AN3L Antenna, GPS; Magnetic/Roof-Mount

MAMV-AN3V Antenna, Combo GPS/700/800 MHz; 3 dB Gain, Rooftop-Mount

MAMROS0055 TIA/EIA-232 Serial Computer Cable (6 feet)

Table 4-3: CH-103/CH-103PA Installation Kit MAMV-ZN6Y

ITEM QTY PART NUMBER DESCRIPTION

1 1 AJ03067 Bracket, Control Head

2 1 AD00150 Thumbscrews, Black (Package of 2)

3 1 MACDOS0010 Terminator, CAN; 3-Pin

4 1 MACDOS0006-RR030 Cable, CAN; 30 feet, Right-Angle-Right Angle Connectors

5 1 MAMROS0075-N1210 Cable, DC Power; 12-AWG, 10 feet, Straight Connector

6 1 FS23058 Kit, Fuse Distribution Accessory. Includes (1) Fuse Block,

(1) Protective Marker, (1) Adjacent Jumper, (1) 5-Amp ATC

Fuse, (1) 15-Amp ATC Fuse.

7 1 FS24473 Kit, Vehicle Fuse and T-Tap. Includes (1) ATM Fuse Holder,

(1) 2-Amp ATM Fuse, (2) T-Tab Disconnects and (1) ¼-Inch

Crimp Tab.

8 1 LS102824V10 Speaker, External Mobile; 20-Watt

9 1 MAMROS0034-NN006 Cable, Speaker; 6-Inch, Straight Connector

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Table 4-4: Additional Accessories for CH-103 and CH-103PA Control Heads

PART NUMBER DESCRIPTION

MAMV-CL6R Kit, Cable; CH-103PA Public Address. Includes (1) 50-Foot Speaker Y-

Cable MACDOS0015-NN050, (1) 50-Foot Common Mic Interface Cable

MACDOS0014-RN050 and (1) 10-Inch CAN Y-Cable MACDOS0017-

BR010.

MAMV-SU5B Kit, Power-Off Time Delay Relay. Includes (1) Relay MAMROS0088, (1)

22 to 18-AWG Moisture-Resistant Splice, (1) 12 to 10-AWG Moisture-

Resistant Butt Splice, and (1) 3/8-Inch Ring Terminal.

MACDOS0006-NN030 Cable, CAN; 30-Foot, Straight-to-Straight Connectors

MACDOS0006-NN090 Cable, CAN; 90-Foot, Straight-to-Straight Connectors

MACDOS0006-NR030 Cable, CAN; 30-Foot, Straight-to-Right Angle Connectors

MACDOS0006-NR090 Cable, CAN; 90-Foot, Straight-to-Right Angle Connectors

MACDOS0006-RR030 Cable, CAN; 30-Foot, Right-Angle-to-Right-Angle Connectors

MACDOS0006-RR090 Cable, CAN; 90-Foot, Right-Angle-to-Right-Angle Connectors

MACDOS0010 Terminator, CAN; 3-Pin

MACDOS0011 Kit, Control Head Dash Bracket. Includes bracket and thumbscrews.

MACDOS0012 Kit, Control Head Pedestal Mounting. Includes pedestal mount and screws.

MACDOS0013-CN004 Kit, Speaker; 20-Watt, CH-103, Straight Connector

MACDOS0013-CR004 Kit, Speaker; 20-Watt, CH-103, Right-Angle Connector

MACDOS0013-PN004 Kit, Speaker; 20-Watt, CH-103PA, Straight Connector

MACDOS0013-PR004 Kit, Speaker; 20-Watt, CH-103PA, Right-Angle Connector

MACDOS0014-NN050 Cable, Common Microphone Interface; 50 feet, Straight Connector

MACDOS0014-RN050 Cable, Common Microphone Interface; 50 feet, Right Angle Connector

MACDOS0015-NN050 Cable, Speaker; 50-Foot Y-Cable, Straight Connectors

MACDOS0015-RN050 Cable, Speaker; 50-Foot Y-Cable, Right-Angle Connectors

MACDOS0017-BN010 Cable, CAN; Y-Cable, Black, Straight Connectors

MACDOS0017-BR010 Cable, CAN; Y-Cable, Black, Right-Angle Connectors

MAMV-MC7W Microphone, Noise-Canceling; Alden Straight Connector

(Includes Microphone MC103334V20 and Mic Hanger 344A4678P1)

MAMV-(TBD1) Microphone, Noise-Canceling; Alden Right-Angle Connector

(Includes Microphone MC103334V21 and Mic Hanger 344A4678P1)

MAMV-MC7X Microphone, with DTMF Keypad; Alden Straight Connector

(Includes DTMF Mic MC103334V1 and Mic Hanger 344A4678P1)

MAMV-(TBD2) Microphone, with DTMF Keypad; Alden Right-Angle Connector

(Includes Microphone MC103334V2 and Mic Hanger 344A4678P1)

MAMROS0075-N1210 Cable, DC Power; 12-AWG, 10-Foot, Straight Connector

MAMROS0075-N1220 Cable, DC Power; 12-AWG, 20-Foot, Straight Connector

MAMROS0075-R1210 Cable, DC Power; 12-AWG, 10-Foot, Right-Angle Connector

MAMROS0075-R1220 Cable, DC Power; 12-AWG, 20-Foot, Right-Angle Connector

MAMROS0091 Module, Siren and Light Control (SS2000SM-SC)

1020 Speaker, External Mobile; 100-Watt

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4.2 MATERIAL INSPECTION

CAUTION

After removal from the carton, examine the radio, control head and other components

for broken, damaged, loose or missing parts. If any are noted, contact M/A-COM’s

Technical Assistance Center (see page 13) immediately to discuss and arrange the

return of the equipment to M/A-COM for replacement. Any unauthorized attempts to

repair or modify this equipment will void the warranty and could create a safety hazard.

Upon removing items from the carton and verifying that all equipment is accounted for, proceed with the

installation.

CAUTION

Mounting of the radio, control head, and/or antenna in ways other than those described

in this manual may adversely affect performance, violate FCC rules on RF exposure,

and even damage the unit, posing a potential safety hazard.

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5 PLANNING THE INSTALLATION

5.1 GENERAL INFORMATION

Before starting, plan the installation carefully so it will meet the following requirements:

• The installation is safe for the operator and passengers within the vehicle.

• The equipment is installed away from the airbag deployment areas.

• The installation allows for convenient access by the operator.

• The equipment is protected from water damage.

• The installation is neat and allows easy service access.

• The equipment is mounted in a location assuring the vehicle occupant’s safety and out of the way of

passengers and auto mechanics.

CAUTION

A professional radio installer should perform the installation!

5.2 TOOLS REQUIRED

The following list of equipment is recommended for the installation. Equivalents may be used unless

otherwise specified.

NOTE

A separate list of test equipment is included in section 16.2.

• Non-Insulated Crimp Tool:

Thomas & Betts WT-111-M

• Phillips-Head Screwdrivers, #1 and #2

• Insulated Terminal Crimp Tool:

Klein 1005

• Flat-Head Screwdrivers, #1 and #2

• Ratcheting Coaxial Crimp Tool:

Cambridge 24-9960P

• ¾-Inch Hole Saw with Depth Protection: Ripley

HSK 19 or Antenex HS34, No substitutes

• Non-Metallic Fish Tape,

25-Foot: Klein-Lite 50156

• Clutch-Type Screw Cordless Gun/Drill with Driver

Bits: Makita #6096DWE

• Two Pairs of Slip-Jaw Pliers • Cordless Electric Drill with Bits

• Various Socket and Driver Sets • Deburring Tool (for ¼-inch and smaller holes)

• Various Fasteners • Flush-Cut and Large Wire Cutters

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FRONT VIEW

REAR VIEW

(Shown With Installation Cables NOT Connected)

Figure 5-1: Mobile Radio Unit Front and Rear Views

I/O Cable’s

DB-44

Connecto

DC Power Cable’s

3-Pin Connector

GPS Antenna Cable’s SMA Connecto

Antenna Cable’s

TNC Connecto

CAN Port

Connectors

(2 Places)

Mobile Radio Unit

(MRU)

Base Bracket

Base Bracket’s

Mounting Tabs

(4 places) Mounting Holes

(Not used; 2 places)

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5.3 LOCATING COMPONENTS

Plan the mounting locations of all components (radio, control head, antenna, and cables) and determine

the routes for all wiring and cables. Particularly consider the connection of the control head for planning

purposes.

• Determine the customer’s preferences, if any, for location of components. Comply with these

preferences as long as they are consistent with safety recommendations and guidelines presented in

this manual, and other generally accepted professional radio installation practices.

• Nominal dimensions for the radio are 2.8 x 8.8 x 9.3 inches (7.1 x 22.4 x 23.6 centimeters; height x

width x depth). This includes the base bracket and its mounting tabs, but it does not include any

clearance space required for cabling, air circulation, access to mounting hardware, etc.

• Verify sufficient clearance behind the units is provided so cables will not be stressed, crushed,

twisted, or bent at severe angles. Also, the front and sides must have clearance for air circulation,

access to mounting hardware, etc.

• Connections on the radio are made through “pigtail” type cables exiting the rear of the radio. This

design minimizes the stresses associated with mating connections and it allows for easy connector

mating. However, stresses can still be induced if adequate service looping is not employed.

Connections to the CH-103 and CH-103PA Control Heads are made with connectors mounted on the

rear panel of each head instead of “pigtail” type cables.

CAUTION

All cables should have a service loop near each connector end. Do not bend the cables

at severe angles near the connector end. Above all, after all components are installed,

verify no cable is under any tension. Failure to do so may lead to damaged cables,

causing intermittent radio operation or complete radio failure.

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6 MOUNTING THE MOBILE RADIO IN THE TRUNK

This section provides details on mounting the mobile radio in the trunk of the vehicle. See Figure 5-1 and

refer to the respective wiring diagram at the end of this manual as necessary. See section 9 (page 33) for

control head installation procedures.

As an assembled unit, the radio weighs approximately 8 pounds (3.63 kilograms). The preferred mounting

of the radio is on top of a firm, flat surface.

NOTE

Installation Kit MAMV-ZN6X (detailed in Table 4-1 on page 14) contains the most

complete set of materials for installing the radio. Therefore, the following instructions

make repeated reference to this kit. Item numbers given in parenthesis refer to items in

the Installation Kit.

NOTE

Prior to beginning the installation, verify the radio has the proper version of software

installed and it has been configured for customer usage (i.e., channels, personality, etc.).

CAUTION

Though generally mounted in a trunk or remote location, the radio must be kept away

from heat sources. Mounting it in a location which is out of direct sunlight is

recommended but not required. Adequate ventilation space must be provided to the rear

and side fins. The radio reduces its RF output power when its ambient temperature

exceeds approximately +140 o Fahrenheit (+60o Celsius).

WARNING

At a minimum, the mounting surface should be 16-guage (approximately 1/16-inch

thick) steel sheet metal. Mounting to plastic or other material with low tensile and shear

strength could lead to an unsafe and/or failed mounting condition, turning the radio and

its base bracket into a projectile during a high-shock incident such as a motor vehicle

accident. If the selected mounting surface does not meet the minimum 16-guage steel

sheet metal requirement, the surface should be reinforced with a metal backing plate

(not supplied) or it should be reinforced using some other approved mounting method.

CAUTION

Before drilling holes and/or installing mounting screws, verify these operations will not

damage or interfere with any existing vehicle component (fuel tank, fuel line,

transmission housing, existing vehicle wiring, etc.). Always check to see how far the

mounting screws will extend below the mounting surface prior to installation. Always

deburr drilled holes before installing screws.

6.1 BRACKET INSTALLATION

Typically, the radio’s Base Bracket (Item 1 in Table 4-1) is mounted in the vehicle’s trunk, on the top

surface of the trunk tray or the trunk floor. However, it can be suspended from the trunk’s rear deck if the

surface is completely flat, does not require any shimming and the gauge of deck’s sheet metal is high

(16-guage minimum).

Since the radio protrudes several inches from the bracket’s front and back edges, maintain sufficient

distance at the front and back for this and additional clearance. A minimum distance of three (3) inches is

required from the rear edge of the bracket; however four (4) inches or more is recommended to improve

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radio installation and removal ease. A minimum distance of two (2) inches is recommended from the

front edge of the bracket. The bracket is front/back symmetrical, and left/right symmetrical.

As all installations differ, bracket-to-vehicle mounting screws are not included. Steel #10 self-threading

screws are recommended. Sheet metal screws are not recommended. The bracket has ten (10) available

mounting holes; six (6) are underneath the radio when it is attached to the bracket. The following

mounting procedure is recommended:

1. Using the Base Bracket (Item 1) as a template and/or the dimensional information shown in Figure

6-1, mark and drill mounting holes into the mounting surface as required. At least six (6) screws are

recommended for proper installation: Four (4) in the screw holes of the bracket’s side tabs and two

(2) in its center-most screw holes. If the installation prevents the installation of six screws, a

minimum of four screws installed in the side tabs’ holes is required.

SIDE & TOP VIEW

TOP VIEW WITH SCREW HOLE DIMENSIONS (In Inches)

Figure 6-1: Base Bracket (Radio Not Shown)

Side Mounting Tabs

(4 places)

Bracket-To-Vehicle

Screw Holes

(10 places)

Bracket-To-Radio Screw Holes

(6 places, 3 each side)

Four (4) Upper-Most

Holes Not Used

(2 each side)

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2. Deburr all newly drilled mounting holes.

3. Set the bracket in place, and install and tighten the mounting screws.

4. Verify the bracket is firmly secured to the mounting surface. A secure mount prevents unreasonable

vibration, which could damage the radio and/or cause its cable connections to loosen.

6.2 MOUNT THE RADIO INTO THE BRACKET

The radio should now be mounted into the bracket according to this procedure:

1. Attach the radio into the Base Bracket using three #8-32 pan-head screws (Item 5 in Table 4-1) per

side. Tighten all six screws with a screwdriver until the lock washer on the screws are fully

compressed and the radio is firm and flush in between the brackets.

2. Check the mounting area for proper clearance for cable service looping and for air circulation, plus an

area to secure and rest the excess cable lengths.

NOTE

Proper mounting is one factor that ensures optimal radio performance. An improperly

mounted radio may experience degradation in the quality of voice and data

communications.

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7 ANTENNA INSTALLATION

7.1 ANTENNA MOUNTING LOCATIONS

WARNING

At this time, review all information presented in the SAFETY INFORMATION

section of this manual (begins on page 5). A transmitting antenna must be installed in

accordance with the guidelines presented in the SAFETY INFORMATION section.

Use Table 1-1 as a guide for determining the best possible mounting

configuration/location in order to reduce human exposure to radio frequency (RF)

electromagnetic energy during transmit mode.

Antennas can be mounted in one of there possible locations on the vehicle as described in the following

subsections. Figure 7-1 shows the recommended locations and antenna part numbers for each location.

Also, see Table 4-2 for additional information. Always follow manufacturer’s instructions when

mounting an antenna.

TYPICAL VEHICLE TOP VIEW

❶Vehicle Rooftop, Direct Center ❸Trunk Lid, Direct Center

MAMV-AN3J = 700/800 MHz MAMV-AN3K = 700/800 MHz Elev. Feed

MAMV-AN3K = 700/800 MHz Elev. Feed

MAMV-AN3V = Combo GPS/700/800 MHz

❷Vechicle Rooftop, Center-Rear

MAMV-AN3J = 700/800 MHz

MAMV-AN3L = GPS Rx Only

Figure 7-1: Recommended Antenna Mounting Locations (With Antenna Part Numbers)

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7.1.1 Direct Center or Center-Rear of Rooftop

The center of the vehicle’s roof is the best location for the rooftop antenna (❶in Figure 7-1). For optimal

performance, the mounting area under the antenna must be a flat with a minimum radius of six (6) inches

of metallized ground plane. It must be located directly in the center of the roof for RF safety. Other

obstructions such as a light bar or another antenna may prevent the antenna from being mounted in the

direct center of the roof. In this case, the antenna should be mounted a minimum of one foot away from

and behind the obstruction but in the middle of the roof with respect to the left and right sides of the

vehicle (❷in Figure 7-1).

7.1.2 Center of Trunk Lid

Certain vehicles do not allow for the antenna to be placed in the center or center-rear of the roof. In this

case, the next best location for the antenna is in the direct center of the trunk lid (❸in Figure 7-1). In this

case, an elevated-feed-point antenna is recommended. Although this type of antenna does not require a

metallized ground plane, it must be located directly in the center of the trunk lid for RF safety.

WARNING

The antenna cable of M/A-COM approved antennas should never be cut to a shorter

length. Instead, excess cable must be tied and stowed. This not only prevents the

antenna from radiating above its intended or configured power, but it also allows for

future installation considerations. Installations requiring longer cables are to be treated

as custom and separately specified.

7.2 ANTENNA INSTALLATION PROCEDURE

NOTE

An antenna must be installed before completing the radio installation.

7.2.1 Install and Connect Mobile Radio Antenna

Table 4-2 lists several types of mobile radio antennas available for use with the radio. As presented in the

previous section, various mounting locations exist. Optimal performance is achieved via a rooftop

antenna mounted in the direct center of the motor vehicle’s roof:

1. Once the mounting location is selected, refer to the antenna manufacturer’s mounting and testing

instructions included with the antenna kit for installation guidance. If necessary, contact M/A-COM’s

Technical Assistance Center (see page 13 for contact information).

2. Route the cable from the antenna to the rear of the radio. The cable should be kept out of casual

contact from persons within the vehicle. Tie and stow as necessary.

3. Connect the antenna cable’s TNC plug-type (male) connector to the radio’s TNC receptacle-type

(female) “pigtail” type RF connector at the rear of the radio. Mate the two connectors and turn the

plug clockwise until finger-tight.

This will be a temporary connection until the radio and antenna can be tested after the installation is

complete. The antenna needs to be connected in case of accidental RF transmission.

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7.2.2 Install and Connect GPS Antenna

The radio is equipped with a GPS receiver which requires connection to an externally-mounted GPS

antenna if the GPS functions will be utilized.

The SMR/GPS combo antenna kit includes a GPS antenna built into the base of the mobile antenna. No

extra holes are required for the GPS cable when using this antenna. The antenna must be kept at least six

(6) inches away from any other antenna mounted on the vehicle and have at least six inches of surface

ground plane beneath it.

1. Once the mounting location is selected, refer to the antenna manufacturer’s mounting and testing

instructions for installation guidance. If necessary, contact M/A-COM’s Technical Assistance Center

(see page 13 for contact information).

2. Route the cable from the GPS antenna to the rear of the radio. The cable should be kept out of casual

contact from persons within the vehicle.

3. Connect the GPS antenna cable’s SMA plug-type (male) connector to the radio’s SMA receptacle-

type (female) “pigtail” type RF connector at the rear of the radio. Mate the two connectors and turn

the plug clockwise. Tighten with a pair of slip-jaw pliers.

NOTE

Do not attempt to alter the length of cable from the GPS antenna. The SMA connector

on the end of the antenna cable is not field-replaceable. Tie and stow excess cable as

necessary.

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8 RADIO DC POWER INSTALLATION

Refer to the wiring diagrams at the end of this manual. The diagram in section 19 (page 61) includes

mobile radio with the CH-103 Control Head. The diagram in section 20 (page 63) is nearly the same with

the exception of the three cables designed for use with the CH-103PA Control Heads. Power connections

to either head are exactly the same.

8.1 ON/OFF POWER WIRING CONFIGURATIONS

The mobile radio can be wired in a motor vehicle in various ways to accommodate the user’s preferences.

In all cases, its red power wire must be connected through an in-line fuse to raw battery power (positive

battery terminal). The white ignition wire of the radio’s DC Power Cable is only used for the Data-Only

(i.e., no Control Head) radio and it is the only means for turning its power on. An in-line switch for

switched battery power to the radio must never be considered unless the user has the discipline to turn off

the radio through the Control Head’s on/off button or through a separate switch wired to the ignition

sense wire. Failure to wait for the radio to completely power down before disconnecting battery power

will not damage the radio; however, it will result in the loss of settings that have changed (e.g., channel

number, volume setting, etc.) during the operating session.

Integral to the power management system of the CH-103 and CH-103PA Control Heads is a 60-second

power-off Time-Delay Relay (part number MAMROS0088). The addition of this relay is required to

remove the relatively high standby (off-state) quiescent-current (30 mA) consumed by the Control Head

that would otherwise reduce the charge state of the vehicle’s battery. The radio by itself does not require

the relay, as its standby quiescent-current is typically below 1 mA. This is especially true in the case of

the Data-Only radio configuration since it has no control head. However, because the CH-103 and

CH-103PA do require the relay, it is advisable to connect the relay so both the radio and Control Head are

shut down together. This relay reduces quiescent-current for the radio/control head pair below 2 mA and,

if installed correctly, will work in conjunction with all on/off power configurations described below.

On/Off power functions for the radio are controlled by the Control Head or, in the case of a Data-Only

radio, within the radio itself. The following power wiring configurations are supported:

• Radio turns on automatically with vehicle’s ignition switch/key — The white sense wire of the

Control Head’s (or Data-Only radio’s) DC Power Cable is connected to a fused switched power

source, typically identified as “Accessory” power. This source must switch on (up to + battery

voltage potential) when the vehicle’s ignition switch/key turns on, and it must switch off (to near zero

volts) when the ignition switch/key turns off. The required fuse rating is 2 amperes. An ATM fuse

holder and fuse are included with the applicable fuse kit.

• Radio turns on with a manual switch — The white sense wire of the Control Head’s (or Data-Only

radio’s) DC Power Cable is connected to one side of a manual toggle switch and the other side of this

switch is connected to a fused vehicle power source. This configuration is used when, for example,

the radio must remain on even when the ignition key must be removed from the vehicle and a

separate on/off switch is acceptable. The required fuse rating is 2 amperes if no other devices share

the switch. If other devices share the switch, the 2-ampere ATM fuse must be spliced in the white

wire on the load/switched power side of the switch.

• Radio turns on with Control Head’s on/off button (“hot wired”) — Standard software

configurations allow turning on the radio with the Control Head’s on/off button. This configuration

may be desired if, for example, the radio must remain on even when the ignition key must be

removed from the vehicle. In this case, the white sense wire of the Control Head’s DC Power Cable is

connected to vehicle chassis ground and the Time-Delay Relay’s white wire is connected to the

relay’s red (power input) wire. In fact, the Time-Delay Relay’s function is rendered useless, so the

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relay could be completely bypassed in this configuration. Similarly, the 2-ampere ATM fuse and fuse

holder included in the fuse kit are not needed.

CAUTION

Because the “hot wired” configuration renders the function of the Time Delay Relay

useless, the Control Head will draw substantial quiescent current continuously from

the battery when turned off. For this reason, the “hot wired” configuration should only

be used in highly-controlled or temporary situations.

NOTE

A software configuration parameter can be set to disable the function of the Control

Head’s on/off power button. This may be desired, for example, where frequent contact

with the button is unavoidable and detrimental to usage.

8.2 POWER INSTALLATION PROCEDURE

Prepare to connect battery power to the radio through the vehicle’s engine firewall. Plan the wire route

carefully, using an existing access hole through the firewall if possible. Alternately, drill a new hole

approximately 3/8-inch in diameter and install a small rubber grommet to protect the wire from chafing

on the hole’s sharp metal edge. To prevent fumes from entering the passenger compartment, this

hole/grommet/wire combination must also be sealed with a silicon-based sealer before completing the

installation.

8.2.1 Install Main Fuse Holder, Time-Delay Relay, and Fuse Block

Refer to Figure 8-1 and Figure 8-2 for parts included the radio’s fuse kit. Follow the steps below for

connecting the radio to the vehicle’s positive battery power. Also refer to the respective wiring diagram at

the end of this manual.

CAUTION

Do not install the fuse holder, wire, and relay over or in the near vicinity of the engine.

Excessive engine heat can cause permanent damage to these components and can lead

to intermittent electrical connection to the battery.

WARNING

Before making connections to the battery’s positive post, carefully disconnect the

battery’s negative (ground) cable. This will prevent tools or other metallic objects

which come in contact with the battery’s positive terminal from shorting to

vehicle chassis ground, causing sparks or even a fire or an explosion! When

disconnecting the negative cable, cover/insulate the positive post if it is not

already so a tool cannot short between the posts.

A fuse must not be installed in the main fuse holder until all wiring is complete.

This will prevent the unit from powering up prematurely and/or causing an in-

rush of current that could lead to shorting of the battery, sparks, or even fire.

1. The installation’s main ATC Fuse Holder is a part of the Fuse Distribution Rail Kit (part of Item 2 in

Table 4-1). Strip one of the ATC Fuse Holder’s wires and crimp a 3/8-inch ring terminal to it. Ring

terminals are also included with the kit.

2. Verify the fuse is NOT in the Fuse Holder.

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3. Connect the ring terminal directly to the battery’s positive post (or if present, to a stud on the battery’s

main/non-switched power distribution terminal block).

4. Mount the Time-Delay Relay firmly onto a flat surface within the vehicle’s engine compartment and

near the battery but away from sources of excessive heat. Use the various mounting holes in the relay

case as necessary and self-threading screws (not supplied).

5. Strip the Fuse Holder’s other wire and strip the relay’s 10-AWG red wire. Connect these two wires

together using the 10-AWG moisture-resistant insulated butt splice included in the Fuse Distribution

Rail Kit.

6. Strip the relay’s 10-AWG yellow wire. This is its output lead.

7. Strip one end of the 20-foot long 10-AWG red wire supplied in the Fuse Distribution Rail Kit and

connect it to the relay’s yellow wire using a 10-AWG moisture-resistant butt splice.

8. Route the other end of the 20-foot long red wire through a wire-loom then through the grommet in the

firewall. This end of the red wire will later be connected to the Fuse Block clipped on the Fuse

Distribution Rail Assembly (both parts of the Fuse Distribution Rail Kit). The Fuse Distribution Rail

Assembly will be located near the radio in the trunk.

9. Connect the relay’s white wire to a switched power source such as “Accessory” power at the

vehicle’s fuse box. Use an 18-AWG moisture-resistant insulated butt splice and 18-AWG wire. Route

the wire through a wire-loom then through the grommet in the firewall to the fuse box. This must be

the same switched power source (that is later) connected to the Control Head’s white wire; see section

9.5.3 on page 37 for additional information.

10. Continue routing the 20-foot red wire through channels in the vehicle to the location of the radio.

Remove interior panels, door kick panels, etc. Protect the wire from possible chafing as necessary.

11. Mount the Fuse Distribution Rail Assembly (included in the Fuse Distribution Rail Kit; see Figure

8-2) in the vicinity of the radio’s mounting location, but where casual contact is not likely. Use self-

threading screws (not supplied) and any available mounting slots in the DIN rail to mount the block.

NOTE

The Fuse Distribution Rail Assembly has a DIN-type rail allowing additional Fuse

Blocks to be added to it if fuse expansion is necessary in the future, such as for

multiple Control Head installations. The rail may be cut to decrease its length if

necessary, but enough room for at least one Control Head and any additional future

expansion should be considered first.

12. Apply the sticker included in the Fuse Distribution Rail Kit in the vicinity of the Fuse Block as future

reference for service personnel.

13. At the Fuse Block, cut and discard excess length from the 20-foot red wire, strip the end, and connect

it to the Fuse Block according to the instructions included with the block.

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Figure 8-1: Fuse and Power-Off Time Delay Relay Wiring at Battery (Exploded View)

8.2.2 Make Ground Connections at Fuse Block and Time-Delay Relay

1. Strip one end of the 10-AWG black wire (included with the Fuse Distribution Rail Kit) and crimp a

3/8-inch ring terminal to it.

2. Near the Fuse Distribution Rail Assembly, locate an area of vehicle chassis ground within one foot of

the assembly and strip the area of any paint or dirt to expose a bare metal surface.

3. Drill a hole as necessary and connect the ring terminal to chassis ground. Use a self-threading screw

or other appropriate hardware to ensure a reliable metal-to-metal contact. Tighten securely.

4. Cut the black wire to a length long enough to reach a green-yellow Grounding Block on the Fuse

Distribution Rail Assembly, plus length for a service loop. Strip the end and connect it to a

Grounding Block in accordance with the instructions provided with the kit. Adjacent Grounding

Blocks are electrically connected together, so the black wire will ground both blocks.

5. Obtain the radio’s DC Power Cable (Item 3 in Table 4-1) and temporarily connect it to the radio.

Next, cut its black (negative) wire to a length long enough to reach a Grounding Block, plus length

for a service loop. Strip the end of the wire and connect it to a Grounding Block in accordance with

the instructions provided with the kit.

3/8-Inch Ring Terminal:

To Positive (+) Battery Post

ATC Fuse Holder’s Cap

In-Line ATC

Fuse Holde

Insulated Butt Splice

20-Foot

Red Wire

(Cut To Required

Length)

30-Amp

ATC Fuse

(Green)

Insulated

Butt Splice

Time-Delay Relay

Relay’s White Wire:

To Switched Power Source

Relay’s Yellow Wire: Output (To Load)

Relay’s Black Wire:

To Chassis Ground

Relay’s Red Wire:

+12-Volt Battery

Power Input

To ATC

Fuse Block

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(Image Not Currently Available)

Figure 8-2: Wiring to the Fuse Distribution Rail Assembly (Exploded View)

6. Label and route the DC Power Cable’s white wire to the vehicle’s fuse box. Tie and stow as necessary

so the wire remains out of the way of casual contact and wire chafe is avoided.

NOTE

The Control Head wakes up the radio via the CAN port when power is applied.

However, connection of the white sense wire may be needed in future configurations

that do not use the Control Head (e.g., Data-Only applications). Therefore, it is

recommended that the white wire be labeled, routed up to the vehicle’s fuse box,

coiled, and stowed for possible future use rather than be cut from the DC Power Cable.

7. In the engine compartment, strip the Time-Delay Relay’s black wire and crimp a 3/8-inch ring

terminal to the wire.

8. Locate a nearby section of vehicle chassis ground and strip the area of any paint or dirt to expose a

bare metal surface.

9. Drill a hole as necessary and connect the relay’s black wire to chassis ground using a self-threading

screw.

CAUTION

Do NOT connect the relay’s black wire directly onto the negative terminal of the

battery!

8.2.3 Complete Fuse Block and DC Power Cable Connections

1. Cut the red (positive) wire of the DC Power Cable to a length long enough to reach the Fuse Block

plus length for a service loop.

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2. Strip the end and connect it to the output power distribution side of the Fuse Block in accordance with

the instructions included with the block.

3. Mate the DC Power Cable’s connector to the radio’s 3-pin power connector as follows: Visually align

the key and firmly push and turn the outer locking ring clockwise until it stops. A click will be sensed

to confirm proper mating.

CAUTION

Upon connection, verify the DC power cable is not under any stress, a service loop is

maintained, and the cable can be properly tied and stowed.

4. Install the 15-Amp ATC fuse included in the Fuse Distribution Rail Kit into the Fuse Block’s fuse

slot.

CAUTION

Installing a fuse with the wrong amperage rating could cause an unsafe condition

and/or a prematurely blown fuse. Verify the correct fuse value for the radio is installed.

The color of the 15-amp fuse is blue.

5. Tie and stow all cables/wires as necessary so they remain out of the way of casual contact, and so

wire chafe is avoided.

CAUTION

When servicing the radio and/or control head, always manually turn the units off and

then pull the main power fuse in the engine compartment.

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9 CONTROL HEAD INSTALLATION

9.1 GENERAL INFORMATION

Figure 9-1 below illustrates CH-103 and CH-103PA Control Head interfaces.

Figure 9-1: CH-103 and CH-103PA Control Head Front and Rear Panels

NOTE

Prior to installation, verify the Control Head has the proper software version installed

and verify it has been configured for customer usage (i.e., channels, personality, etc.)

NOTE

Because the MAMV-ZN6Y Installation Kit (see Table 4-3 on page 15 for complete

contents) contains the most complete set of materials for installing the

CH-103/CH-103PA Control Head, the following instructions make repeated reference to

this kit. Item numbers given in parenthesis below refer to items in the Installation Kit.

NOTE

For the CH-103PA Control Head, in addition to the items listed in Table 4-3, other

optional accessories are also required to complete the installation. These optional

accessories are discussed in the following pages.

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9.2 BRACKET INSTALLATION

CAUTION

When drilling holes, be careful to avoid damaging some vital part of the vehicle (fuel

tank, transmission housing, etc.). Always check to see how far the mounting screws

will extend below the mounting surface prior to installation. After drilling pilot holes,

remove all metal shavings from them (deburr) before installing mounting screws.

9.2.1 Standard U-Shaped Bracket

1. Using the U-shaped bracket (Item 1 in Table 4-3) as a template, mark and drill mounting holes

into the mounting surface as required. It can be mounted under or on top of the dash as required

and as space permits. Screws for mounting the bracket are not included, as all installations differ.

Self-threading screws are recommended.

2. Install and tighten the mounting screws.

3. Verify the bracket is held firmly to the mounting surface. Firm mounting prevents unreasonable

vibration, which could damage the Control Head and/or cause its cable connections to loosen.

9.2.2 Mounting Pedestal (Optional)

An optional mounting pedestal, part number MACDOS0012, may be purchased separately to replace the

standard U-shaped mounting bracket. See Figure 9-2.

Figure 9-2: Optional Control Head Mounting Pedestal (Part Number MACDOS0012)

9.3 ATTACH CONTROL HEAD TO BRACKET

The following procedure applies to the standard U-shaped mounting bracket:

1. Slide the Control Head into the bracket then start a thumbscrew (Item 2 in Table 4-3) in each side by

inserting it through the hole in the bracket and then into the threaded hole in the side of the Control

Head. Turn each thumbscrew clockwise as observed from the head of the screw.

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2. The Control Head can be positioned at various angles for best display viewing. As necessary, turn it

on the thumbscrews to a good position (typically, as viewed from the driver’s seat) and then tighten

both thumbscrews until the Control Head is held firmly in place.

9.4 CAN CONNECTIONS

9.4.1 General Information

Because CAN devices do not provide their own termination, the CAN bus needs to be terminated at both

ends for proper operation.

The CH-103 Control Head has two ports on the rear panel to support “daisy-chaining” of multiple Control

Heads or other CAN devices. When a CH-103 is in the middle of a chain (e.g., radio on one end and

another Control Head on the other), two separate CAN cables connect to the two ports. When the CH-103

is at the end of a chain of devices, one CAN port connects to the previous CAN device and the other port

needs to be terminated with a CAN Terminator (part number MACDOS0010).

The CH-103PA Control Head has only one CAN port. A CAN Y-cable (part number MACDOS0017-

BR010 for right-angle connector or MACDOS0017-BN010 for straight connector; listed in Table 4-4)

needs to be connected to the rear of the CH-103PA to properly terminate the CAN chain. If the

CH-103PA is in the middle of a chain of CAN devices, one CAN cable will connect to one leg of the

Y-cable and another CAN cable will connect to the other. When the CH-103PA is the only CAN device

or is at the end of a chain of devices, one leg of the Y-cable goes to the previous CAN device and the

other needs to be terminated with the CAN Terminator provided in the Control Head Installation Kit.

The radio has two CAN port connections on its I/O pigtail cable. Like the Control Head, it can be

connected either at an end or in the middle of a CAN chain. However, for logistical purposes, it typically

is an end point and provides a termination when a CAN Terminator is connected to one of the two CAN

connectors. The CAN cable from a Control Head then connects to the other connector.

9.4.2 Make CAN Termination

When mating any CAN connection (terminators and cables), visually align the ¾-moon-shaped keys of

the connectors, and then gently push and turn the outer locking ring of the plug (male) connector

clockwise until it stops. A mild click will be sensed to confirm proper mating. Per the specific Control

Head being installed, follow the respective procedure in one of the following subsections.

NOTE

Without visual alignment as a guide, it is possible with excessive force to mate the

CAN connectors improperly. Damage to the connector(s) may result. Therefore, visual

alignment is recommended when mating CAN connectors.

9.4.2.1 CH-103 Control Head CAN Termination

Connect the CAN Terminator (Item 3 in Table 4-3) onto one of the two smaller 3-pin connectors on the

rear of the CH-103. This makes the CAN termination at the Control Head end of the CAN chain.

Continue with section 9.4.3.

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9.4.2.2 CH-103PA Control Head CAN Termination

Connect the plug (male) connector of the CAN Y-cable to the rear of the CH-103PA and connect the

CAN Terminator (Item 3 in Table 4-3) to one leg of the Y-cable. See Figure 9-3. See Table 4-4 for CAN

Y-cable part numbers.

Figure 9-3: CH-103PA CAN Y-Cable and Common Microphone Interface Connections

9.4.3 Connect Control Head to Radio Via CAN Cable

1. Route the CAN Cable (Item 4 in Table 4-3) through the vehicle’s channeling to the radio. Remove

interior panels, door kick panels, etc., as necessary. Protect the cable from possible chafing as

necessary.

2. Attach the CAN Cable’s connector to one of the two CAN port connectors on the radio’s I/O cable.

3. CH-103 Control Head: Connect the other end of the CAN Cable to the open CAN port connector at

the rear of the Control Head.

CH-103PA Control Head: Connect the other end of the CAN Cable to the open leg of the CAN

Y-cable.

4. Loop, tie and stow the excess cable as necessary.

9.5 CONTROL HEAD POWER CABLE INSTALLATION

Plan the cable’s route carefully. For the red wire, ensure a route that will not crush or damage the wire in

any way.

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9.5.1 Install Fuse Holder and DC Power Cable and Make Power Connection

The Control Head has a moderately high quiescent-current drain so red wire power connection to the

output/load side of the Time-Delay Relay (relay’s yellow wire) through the Fuse Block is highly

recommended. Refer to the respective wiring diagram at the end of this manual.

NOTE

Do not share the Control Head’s fuse with any other device. Doing so can cause excess

current to flow through the fuse, causing it to blow unnecessarily.

1. Connect the Control Head’s DC Power Cable (Item 5 in Table 4-3) to the large 3-pin connector at the

rear of the Control Head. Visually align the key and gently push and turn the outer locking ring

clockwise until it stops. A click will be sensed to confirm proper mating.

2. At the back of the Control Head, form a cable service loop of at least six (6) inches, and tie and stow

the cable as necessary.

3. Route the cable’s red (positive power) wire through channels in the vehicle to the location of the Fuse

Distribution Rail Assembly. Remove interior panels, door kick panels, etc. Protect the wire from

possible chafing as necessary.

4. Remove the end stop on the fuse side of the Fuse Distribution Rail Assembly, clip the Fuse Block

included in the Fuse Distribution Accessory Kit (Item 6 in Table 4-3) onto the DIN rail next to the

radio’s block, and snap the end stop back onto the DIN rail so both blocks are firmly fixed to the rail.

Refer to the instructions included with the kit as necessary.

5. Strip and connect the red wire to the load-side of the newly installed Fuse Block.

6. Install the 5-amp ATC fuse included in the kit into the Fuse Block’s fuse slot.

CAUTION

The fuse for the Control Head is rated at 5 amperes. Installing the wrong fuse value

could lead to damage. Verify the Control Head has the correctly rated fuse! The color

of a 5-amp ATC fuse is tan. The 15-amp (blue) ATC fuse included in the kit should

not be used for CH-103/CH-103PA Control Head power; it can be returned to stock or

stored as a spare for the radio.

9.5.2 Make Ground Connection

1. At the back of the Control Head, locate a nearby section of vehicle chassis ground and strip this area

of any paint or dirt to expose a bare metal surface.

2. Cut the black wire of the Control Head’s DC Power Cable as short as possible, but long enough for a

service loop, then strip it and crimp a 3/8-inch ring terminal (included in the fuse kit) to it.

3. Drill a hole as necessary and screw this ring terminal to chassis ground. Use a self-threading screw or

other appropriate hardware to ensure a reliable metal-to-metal contact.

9.5.3 Connect DC Power Cable’s White Wire

A review of the information presented in Section 8.1 may be beneficial at this time. As required per

the chosen power-up configuration, follow one of the three procedures presented in the sub-sections

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below. The Control Head’s DC Power Cable and associated fuse and wire terminal devices are shown in

Figure 9-4.

NOTE

Only the Control Head’s white wire and the Time-Delay Relay’s white wire must be

connected to the ignition or switched power sense. When this vehicle line is asserted (i.e.,

power switched on), the Control Head automatically powers-up the radio via the CAN

connection.

Figure 9-4: Connection of White Ignition Sense Wire

9.5.3.1 Control Head and Radio Turn on with Vehicle’s Ignition Switch/Key

With this wiring configuration, the Control Head and radio automatically turn on and off with the

vehicle’s ignition switch/key. The white wire of the Control Head’s DC Power Cable is typically

identified as the “white ignition switch wire” or the “ignition sense wire.” In this configuration, the white

wire connects to a switched power source, typically identified as “Accessory” power, that switches on and

off with the vehicle’s ignition switch/key.

NOTE

The white ignition sense wire must be connected to a fused power source that switches

from approximately zero volts to approximately +13.6 volts when the vehicle’s ignition

switch/key is turned from the OFF position to the ACCESSORY and RUN positions.

Use of a switched power source that is subject to voltage changes as a result of other

actions, such as opening a vehicle door, may result in undesirable radio operation and/or

a degradation of radio performance.

1. Locate the switched ignition or “Accessory” power wire (typically at or near the vehicle’s fuse block

or in a vehicle wiring harness) that will be used for the switched ignition power source. It may be

necessary to consult the vehicle manufacturer’s wiring diagram.

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2. Route the white wire of the Control Head’s DC Power Cable from the back of the head to an area

near the switched ignition power source. At the back of the head, be sure to maintain a cable service

loop of at least six (6) inches.

3. Cut a short section (6 to 8 inches) off the end of the white wire and strip each end of this short wire.

4. Extend the length of the Time-Delay Relay’s white wire so that it reaches the white wire of the

Control Head’s DC Power Cable. Use the 18-AWG moisture-resistant butt-splice included in the fuse

kit and extra white wire. Extra wire is not included, but in most cases there will be enough extra white

wire from the DC power cable to accommodate this wire extension. Cut excess length from this wire.

5. Crimp the male-tab quick-connect terminal to one end of both the short wire and the extended wire

from the relay. Refer to the respective wiring diagram at the end of this manual.

6. Crimp the ATM fuse holder to the other end of the short wire. The holder has built-in crimpable

joints.

7. Cut the excess length from the white wire of the Control Head’s power cable, strip it, and crimp it to

the other side of the ATM fuse holder.

8. Pull enough of the switched ignition source wire out of its harness so one of the T-tap quick-

disconnect terminals may be attached to it.

9. Two T-tap quick-disconnect terminals are included in the kit. Based on the gauge of wire, select the

proper terminal size: Red is for 22 to 18-AWG wire and blue is for 18 to 14-AWG wire.

10. Attach the selected T-tap quick-disconnect terminal by fitting the wire into its wire groove and

snapping the two halves together with a pair of pliers as shown in Figure 9-5.

Diagram Courtesy of 3M Corp.

Figure 9-5: Attaching T-Tap Quick-Disconnect Terminals

11. Push the male-tab quick-disconnect terminal into the T-tap quick-disconnect terminal’s inlet until it is

fully engaged.

12. Install the 2-amp ATM fuse into the fuse holder. It is recommended that a piece of electrical tape be

wrapped around the fuse connection to keep the fuse from being jostled out of the holder.

13. Tie and stow these wires as necessary so they remain out of the way of casual contact and wire chafe

is avoided.

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9.5.3.2 Control Head and Radio Turn On with a Manual Switch

With this wiring configuration, the Control Head and radio are manually turned on and off via an on/off

switch mounted separately from the Control Head and radio, not through the vehicle’s ignition

switch/key. This configuration is used when, for example, the radio must remain on even when the igni-

tion key must be removed from the vehicle and a separate on/off switch is acceptable. In this

configuration, the white wire connects to a switched power source such as a toggle switch mounted on the

vehicle’s dash.

1. Route the white wire of the Control Head’s DC Power Cable from the back of the unit to an area near

the on/off switch’s location. At the back of the Control Head, be sure to maintain a cable service loop

of at least six (6) inches.

2. Cut a short section (6 to 8 inches) off the end of the white wire and strip the ends.

3. Extend the length of the Time-Delay Relay’s white wire so that it reaches the switch. Use the

18-AWG moisture-resistant butt-splice included in the fuse kit and extra white wire. Extra wire is not

included, but in most cases there will be enough extra white wire from the DC power cable to

accommodate this wire extension. Cut excess length from this wire.

4. For a new on/off switch (not supplied):

(a) Tap a wire off non-switched battery power from the vehicle’s fuse box with an 18-AWG wire.

(Use wire remaining from the power cable, if available.) Keep wiring as short as possible and use

approved wiring methods. Use techniques presented in section 9.5.3.1 as a reference.

(b) Strip and crimp this tap to one side of the ATM fuse holder included in the fuse kit. The fuse

holder has built-in crimpable joints.

wire to the common terminal of the manual switch.

(d) Connect both the white wire of the power cable and the extended wire from the relay to the load

(switched) side of the manual switch.

For an existing switch:

(a) Crimp the short wire to one side of the ATM fuse holder and connect the other end to the load

(switched) side of the manual switch.

(b) Crimp the both white wire of the power cable and the extended wire from the relay to the other

side of the ATM fuse holder.

5. Install the 2-amp ATM fuse into the fuse holder. It is recommended that a piece of electrical tape be

wrapped around the fuse connection to keep the fuse from being jostled out of the holder.

6. Tie and stow these wires as necessary so they remain out of the way of casual contact and wire chafe

is avoided.

7. Label this power switch accordingly. For example: “RADIO ON/OFF.”

9.5.3.3 Control Head and Radio Are “Hot Wired”

In the “hot-wired” configuration the Control Head and radio are turned on and off only by the Control

Head’s on/off power button located on the front of the unit. This configuration should only be used in a

temporary setting in which the operator keeps in mind that the Control Head must be turned off when not

in use to avoid unnecessarily discharging the vehicle’s battery. Furthermore, even when off, the Control

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Head will still draw substantial current to eventually discharge the battery over a reasonably short period

of time.

In this configuration, the Control Head’s white wire is simply grounded to the vehicle’s chassis. The

ATM fuse and fuse holder included in the fuse kit are not required in the “hot wired” configuration.

1. Connect white wire of the Control Head’s DC Power Cable to the same place that the black (ground)

wire is attached to ground. In other words, ground the white wire along with the black wire. Use a

#10 ring terminal (not included). At the back of the Control Head, be sure to maintain a cable service

loop of at least six (6) inches.

2. Using an approved wiring method, splice the following three (3) wires together: the Time Delay

Relay’s white and red wires, and the wire from the load-side of the 30-ampere ATC fuse holder.

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10 DATA-ONLY RADIO CONNECTIONS

The Data-Only configuration of the radio has no Control Head. The only difference in connections from

an installation with a Control Head is with respect to ignition sense wiring. For a Data-Only radio, follow

the procedure described in either section 9.5.3.1 or 9.5.3.2, except where the white wire of the Control

Head’s DC Power Cable is referenced, make the connections with the white wire of the radio’s DC

Power Cable instead.

NOTE

The ignition sense is the only means for turning on/off the Data-Only radio. The “hot

wired” configuration cannot be utilized for the Data-Only radio, since this configuration

does not employ the DC Power Cable’s white wire.

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11 MICROPHONE INSTALLATION

11.1 CH-103 AND CH-103PA CONNECTIONS

There are several versions of microphones available for use with the radio. In all cases, there is a 14-pin

connection to the front panel of the Control Head.

1. Plug the microphone’s 14-pin connector to the Control Head’s microphone connector as follows:

Align the white arrows on the mating connectors, then push the cable’s connector into the mate—the

outer ring of the connector will rotate during the insertion. The outer ring will lock into place (arrows

aligned) when full connection is made and a click will be sensed.

NOTE

For safety reasons, the mating of the 14-pin microphone connector can be pulled out

with sufficient force. This will prevent incidental cable damage or personal injury if a

snag occurs. However, the cable must be stretched substantially before enough force is

exerted to unlock these mating connectors.

A microphone clip is included with the microphone head. The radio can be configured to provide a

monitor function when the microphone is cradled in the clip.

2. Using the microphone clip as a template, drill mounting holes in the surface of the selected location.

3. Attach the microphone clip to the mounting surface using self-threading screws.

4. The microphone clip must be grounded to the vehicle’s chassis. If not mounted to a grounded metal

surface, complete this requirement by adding a jumper wire attached from chassis ground to the clip.

11.2 COMMON MICROPHONE INTERFACE CONNECTIONS

(CH-103PA ONLY)

Microphone audio can be channeled to an optional Federal Signal Electronic Siren/Light Control System

(purchased separately) for broadcasting through a public address (PA) speaker. This feature is only

supported through the Common Microphone Interface of the CH-103PA. See and follow the procedure

below to make the connections:

1. Connect the 4-pin connector of the Common Microphone Interface Cable (part number

MACDOS0014-RN050 for right-angle connector or MACDOS0014-NN050 for straight) to the

“AUX” connector on the back of the CH-103PA. See Figure 9-3. Visually align the ¾-moon-

shaped keys of the connectors, and then push and turn the outer locking ring of the cable

connector clockwise until it stops. A mild click will be sensed to confirm proper mating.

2. Route both the black cable and purple wire through the vehicle’s channeling to the Federal Signal

unit. Remove interior panels, door kick panels, etc., as necessary. Protect the cable from possible

chafing as necessary.

3. Connect the phone plug at the end of the black cable to the MIC input jack on the Federal Signal

unit.

4. Using the supplied butt-splice, strip and crimp the purple wire to the purple wire in the Federal

Signal unit’s cable harness. Fifty feet of this wire is supplied; cut off and discard excess length.

5. Loop and tie-up the cable and wire as necessary.

6. Follow the installation instructions included with the Federal Signal unit to complete its

installation, if necessary.

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12 SPEAKER INSTALLATION

1. Install the speaker (Item 8 in Table 4-3) in an area of the front or rear dash that will allow for proper

listening range with a moderate volume level setting. Use the hardware and mounting bracket

supplied with it. Refer to the speaker manufacturer’s instructions included in the speaker assembly kit

for additional installation guidance.

2. Install the Speaker Cable Assembly (Item 9 in Table 4-3) onto the 2-pin connector at the rear of the

Control Head by visually aligning the ¾-moon-shaped keys of the connectors, and then push and turn

the outer locking ring of the cable connector clockwise until it stops. A mild click will be sensed to

confirm proper mating.

3. CH-103 Control Head: Connect the speaker’s 2-pin plastic connector to the mating connector on the

Speaker Cable Assembly.

CH-103PA Control Head: A Speaker Y-Cable (part number MACDOS0015-NN050 for a straight

connector or MACDOS0015-RN050 for a right-angle connector) can be purchased in order to

connect the radio’s audio output to both the speaker (included in the Control Head Installation Kit)

and to the Federal Signal unit’s PA speaker. To complete these connections:

a. Connect the Speaker Y-Cable’s 2-pin male connector to the Speaker Cable Assembly’s 2-pin

female connector.

b. Connect the speaker’s 2-pin male connector to the female connector on the Speaker Y-Cable

assembly.

c. Route the speaker cable through the vehicle’s channeling to the Federal Signal unit. Remove

interior panels, door kick panels, etc., as necessary. Protect the cable from possible chafing as

necessary.

d. Using the supplied butt splices, strip and crimp the two wires of the speaker cable to the wires

of the speaker cable in the Federal Signal unit’s cable harness. Fifty feet of this wire is

supplied; cut off and discard any excess length. Polarity for this connection does not need to

be followed.

e. Follow the installation instructions included with the Federal Signal unit to complete its

installation, if necessary.

4. Route the excess cable(s) out of the way of casual contact and tie and stow it.

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13 OPTIONAL CABLES

13.1 FULL-DATA I/O OPTION CABLE

The Full-Data I/O Option Cable 1000022242-0001 connects to the radio’s 44-pin I/O cable connector. It

breaks out into three (3) separate D-subminiature 9-pin (DB-9) type connectors. It also has blunt-end

wires (i.e., not stripped or terminated with a connector) for optional/miscellaneous connections. This

combination allows straightforward access to all external I/O connections provided by the radio. It also

helps speed radio removal and re-installation time when required.

When connected, each DB-9 connector of the Full-Data I/O Option Cable is a TIA/EIA-232 data interface

port for the radio. The connector labeled “SERIAL” is the radio’s serial programming port. The connector

labeled “MODEM” supports the RF modem function that the radio can provide. The connector labeled

“GPS” provides NMEA-formatted GPS serial data connections for the external computer processing the

NMEA-formatted GPS data received by the radio’s internal GPS receiver. The intent is for this option

cable to adapt to standard 9-pin serial computer cables, or alternatively plug directly into the computer’s

or mobile data terminal’s serial port connector.

The blunt-end wires of the Full-Data I/O Option Cable provide connections for the following: (2) vehicle

signal inputs, (2) TTL logic level inputs, (2) open-collector logic outputs, and a baseband audio in/out

with PTT input and activate output. Table 13-1 shows the wiring of the Full-Data I/O Option Cable.

Table 13-1: Full-Data I/O Option Cable 1000022242-0001 Wire Interconnections

44-PIN I/O

CABLE

CONNECTOR PIN

DB-9

CONNECTOR

NAME & PIN2

SIGNAL

NAME DESCRIPTION

1 SERIAL pin 7 CTS_A TIA/EIA-232 Signal, Radio Serial Port

2 SERIAL pin 8 RTS_A TIA/EIA-232 Signal, Radio Serial Port

3 SERIAL pin 1 DCD_A TIA/EIA-232 Signal, Radio Serial Port

4 GPS pin 3 GPS_NMEA_RD TIA/EIA-232 Signal, GPS Output Data

5 (N/C) (Pin 5 of 44-pin connector not used.)

6 MODEM pin 6 DSR_B TIA/EIA-232 Signal, Modem Input

7 MODEM pin 4 DTR_B TIA/EIA-232 Signal, Modem Input

8 MODEM pin 2 RD_B TIA/EIA-232 Signal, Modem Input

9 MODEM pin 9 RI_B TIA/EIA-232 Signal, Modem Input

10 (Wht/Blk) AUD_IN_PTT* Push-to-Talk for Audio Input (active low)

11 (Orange) TTL_IN1 TTL Digital Input #1

12 (Blue) TTL_IN2 TTL Digital Input #2

13 (Gray) OC_OUT2 Open-Collector Digital Output #2

14 (Yellow) IN_SHLD Baseband Audio Input Shield

15 (Wht/Red) AUD_IN_L Differential Audio Input Low (1/2 of twisted pair)

16 SERIAL pin 2 TD_A TIA/EIA-232 Signal, Radio Serial Port

17 SERIAL pin 5

(shell) GND_A TIA/EIA-232 Ground, Radio Serial Port

2 No connection (n/c) terminations and blunt-wire colors are shown in parentheses.

MM-007024-001

Table 13-1: Full-Data I/O Option Cable 1000022242-0001 Wire Interconnections

44-PIN I/O

CABLE

CONNECTOR PIN

DB-9

CONNECTOR

NAME & PIN2

SIGNAL

NAME DESCRIPTION

18 SERIAL pin 4 DSR_A TIA/EIA-232 Signal, Radio Serial Port

19 (N/C) (Pin 19 of 44-pin connector not used.)

20 GPS pin 5, shell GPS_GND TIA/EIA-232 Ground, GPS Output Data

21 (N/C) (Pin 21 of 44-pin connector not used.)

22 MODEM pin 5,

shell GND_B TIA/EIA-232 Ground, Modem Input

23 MODEM pin 3 TD_B TIA/EIA-232 Signal, Modem Input

24 (N/C) (Pin 24 of 44-pin connector not used.)

25 I/O-shell GND_SHLD Overall Cable Shield/Radio Ground

26 (N/C) (Pin 26 of 44-pin connector not used.)

27 (N/C) (Pin 27 of 44-pin connector not used.)

28 (Red) OC_OUT1 Open-Collector Digital Output #1

29 (Wht/Grn) AUD_OUT_ACT Audio Output Activate

30 (Wht/Gra) AUD_IN_H Differential Audio Input High (½ of twisted pair)

31 SERIAL pin 3 RD_A TIA/EIA-232 Signal, Radio Serial Port

32 SERIAL pin 6 DTR_A TIA/EIA-232 Signal, Radio Serial Port

33 SERIAL pin 9 RI_A TIA/EIA-232 Signal, Radio Serial Port

34 GPS pin 2 GPS_NMEA_TD TIA/EIA-232 Signal, GPS Output Data

35 (Wht/Yel) SGND1 Signal Ground Reference

36 MODEM pin 7 RTS_B TIA/EIA-232 Signal, Modem Input

37 MODEM pin 8 CTS_B TIA/EIA-232 Signal, Modem Input

38 MODEM pin 1 DCD_B TIA/EIA-232 Signal, Modem Input

39 (N/C) (Pin 39 of 44-pin connector not used.)

40 (Yellow) VEHICLE_IN1 +12V Control Input #1 from Vehicle

41 (Green) VEHICLE_IN2 +12V Control Input #2 from Vehicle

42 (N/C) (Pin 42 of 44-pin connector not used.)

43 (Wht/Orn) AUD_OUT_H Differential Audio Output High (½ of twisted pair)

44 (Wht/Yel) AUD_OUT_L Differential Audio Output Low (½ of twisted pair)

13.2 PROGRAMMING OPTION CABLE

Related to the Full-Data I/O Option Cable is the Programming Option Cable 1000022242-0002. This

option cable presents only the DB-9 serial interface necessary to program, control, or establish a data

connection with the radio. The intent is for this option cable to adapt to standard 9-pin serial computer

cables, or alternatively plug directly into the computer’s or mobile data terminal’s serial connector. Table

13-2 shows the wiring of the Programming Option Cable.

MM-007024-001

Table 13-2: Programming Option Cable 1000022242-0002 Wire Interconnections

44-PIN I/O

CABLE

CONNECTOR PIN

DB-9 “SERIAL”

CONNECTOR

PIN3

SIGNAL

NAME DESCRIPTION

1 7 CTS_A TIA/EIA-232 Signal, Radio Serial Port

2 8 RTS_A TIA/EIA-232 Signal, Radio Serial Port

3 1 DCD_A TIA/EIA-232 Signal, Radio Serial Port

16 2 TD_A TIA/EIA-232 Signal, Radio Serial Port

17 5 (shell) GND_A TIA/EIA-232 Ground, Radio Serial Port

18 4 DSR_A TIA/EIA-232 Signal, Radio Serial Port

31 3 RD_A TIA/EIA-232 Signal, Radio Serial Port

32 6 DTR_A TIA/EIA-232 Signal, Radio Serial Port

33 9 RI_A TIA/EIA-232 Signal, Radio Serial Port

3 No connection (n/c) terminations and blunt-wire colors are shown in parentheses.

MM-007024-001

14 GPS NMEA-FORMATTED SERIAL DATA

CONNECTION

In order to obtain the GPS NMEA-formatted serial data from the radio, the Full-Data I/O Option Cable

1000022242-0001 is needed. However, the user may create a custom cable assembly that adapts to the

three GPS signals noted in Table 13-1.

Follow this procedure to complete the GPS NMEA-formatted serial data connections using the Full-Data

I/O Option Cable:

1. Connect Full-Data I/O Option Cable’s 44-pin male connector to the radio’s 44-pin female connector.

Tighten the two jackscrews with a small flathead screwdriver. Do not over-tighten.

2. Connect the cable’s DB-9 female connector labeled “GPS” to the computer’s serial port DB-9 male

connector — either directly or with an optional MAMROS0055 serial cable — and tighten the screws

until firm. Route the cabling as required.

3. Follow the manufacturer’s instructions on processing the NMEA-formatted GPS data from the radio.

NOTE

Industry software to process GPS information through this interface is not supported by

M/A-COM.

MM-007024-001

15 INITIAL POWER-UP TEST

1. At the installation’s main ATC fuse holder located near the vehicle battery, open the fuse holder’s cap

and install the 30-amp ATC fuse. This fuse is a part of the Fuse Distribution Rail Kit (a part of Item 2

in Table 4-1). Push the cap back onto the holder until the plastic tab snaps into place.

2. Optionally, fasten the cap to the wheel well or other vehicle surface via the hole in the cap’s mounting

tab and a self-threading screw (not supplied).

CAUTION

The installation’s main fuse is a 30-ampere ATC fuse. Installing the wrong fuse value

could lead to improper operation and/or damage. Verify the ATC fuse supplying power

to the Fuse Distribution Rail Assembly has the correct rating! The color of a 30-amp

ATC fuse is green.

3. Carefully reconnect the vehicle’s battery ground cable.

4. Verify the Control Head has powered-up by checking the display. If the display is not lit, depress the

on/off button for two (2) seconds until an asterisk appears on the display and the display lights up. If

necessary, see Section 8.1.

NOTE

Unlike many mobile radio products, the radio powers-up to the state of last control.

As long as the software configuration parameters have been loaded, successful installation is almost

immediately realized:

• After a short boot-up sequence, the Control Head displays a channel number, the signal strength and

volume setting.

• If no errors are displayed, the installation is most-likely properly wired.

• If an error is displayed, recheck all cable connections, verify all fuses are properly installed, and

verify battery power is getting to the Fuse Blocks. If problems persist, contact M/A-COM’s Technical

Assistance Center (see page 13).

• Consult the Operator’s Manual for operational information.

Refer to the following section for performance test information.

MM-007024-001

16 PERFORMANCE TESTS

This section includes procedures to verify the performance of the radio installation. Testing requires a

wattmeter to measure RF power. There are three procedures in this section:

• Changing Operating Modes

• Testing into a Dummy Load

• Testing with the Antenna

The normal operating mode of the radio for voice or data communications with the CH-103 and CH-

103PA Control Head is the OpenSky Trunking Protocol (OTP) mode. However, the radio must be

operating in a test mode in OTP for testing the antenna connection. The reason for this is OTP employs a

Time Division Multiple Access (TDMA) protocol in which power does not transmit at a 100% duty cycle.

In this case, a measurement error would result in transmission power level, as indicated on a typical

power meter that reads average or RMS power instead of peak power. The test mode allows for 100%

duty-cycle transmissions, thus not forcing the consideration of duty cycle factors.

NOTE

The accuracy of test results depends upon a DC power source in the range of 13.8 to

16 volts dc, with a current capacity of greater than 8 amps. Make sure the vehicle’s

battery is fully charged by running the engine for a few minutes before the test, and

keep the engine running during the test procedures. The vehicle’s location should be

well ventilated so exhaust fumes from the engine do not cause harm! Alternatively,

instead of running the vehicle’s engine for an extended period of time, a 12-volt

vehicle battery charger with a current capacity of at least 15 amps can be connected to

the vehicle’s battery. If using a battery charger, observe polarity when making the

connections to the battery.

CAUTION

If a vehicle equipped with this radio requires jump-starting, the installation’s main

ATC fuse should be removed from the holder prior to jump-starting. Doing so will

prevent damage to the radio system.

NOTE

Prior to installation, the radio’s power level should be configured appropriately. The

wide range of power levels indicated in the following procedures takes into account

such things as: customer’s requirements; measurement errors, especially to include

uncalibrated equipment; cabling losses; and voltage and temperature variations. By no

means should the result from Performance Testing in this section be construed as the

exact value of power level output from the radio, as that value is set and more

accurately measured in the factory. The values obtained in these test procedures

determine a successful installation only.

MM-007024-001

16.1 CHANGING OPERATING MODE FOR TESTS

Operating the radio is accomplished through the navigation pad on the CH-103/CH-103PA Control

Head’s front panel. Follow the actions below to change modes in order to test the transmitter and antenna.

1. If necessary, apply power to the radio and turn it on.

2. Press the ▲ (up arrow) button on the navigation pad repeatedly until the message “MODE” appears

on the display. Press the SELECT button.

3. Press the ► (right arrow) button on the navigation pad repeatedly until the message “OTP” appears.

Press the SELECT button.

4. Press the ► button once to confirm the selection, and then press the SELECT button to choose the

OTP mode.

MM-007024-001

16.2 REQUIRED TEST EQUIPMENT

Table 16-1: Required Test Equipment

TEST EQUIPMENT COMMENTS

PC or Laptop PC

• With Microsoft Windows® 95 (or greater) operating system and a termi-

nal application to issue commands through the COM1 serial port (such as

HyperTerminal).

Recommended HyperTerminal Settings:

General (tab): Settings (tab):

Connect Using: COM1 Terminal Keys (selected)

Configure (button) Emulation = VT100

Bits Per Second = 19200 Backscroll Buffer Line = 500

Data Bits = 8 ASCII Setup (button)

Parity = None Everything unchecked

Stop Bits = 1 Line Delay & Character = 0

Flow Control = None Terminal Settings (button)

132 Column Mode = unchecked

Character Set = ASCII

TIA/EIA-232 Serial

Cable

• With 9-pin D-Subminiature Male-Female Connectors, 1:1, shielded

(Option MAMROS0055 or equivalent)

Wattmeter

• Bird Electronic Corporation Model 43 or equivalent, with N-type female

connectors on both the input and output sides.

As an alternative to using a wattmeter, a Voltage Standing Wave Ratio

(VSWR) meter, Bird Electronic Corporation Model 4391A or equivalent can

be used to carry out the required RF (Radio Frequency) power testing.

Wattmeter

Slug

For use with the wattmeter; rated power of 25 watts and frequency range

appropriate to the 800 MHz output of the mobile radio [Bird Electronics

Element 25E (25 watts, 400–1000 MHz) or equivalent].

Coaxial Jumper

Cable

• 50 Ohm Coaxial Cable with TNC-type male connector on one end and

N-type male connector on the other end, approximately three feet in

length (Pasternack Enterprises PE3661-36 or equivalent).

This cable must have VSWR below 1.5:1 at 800 MHz.

N-Type to TNC

Adapter

N-type male to TNC-type female (Pasternack Enterprises PE9090 or

equivalent).

Dummy Load RF terminator rated at 50-ohm resistance and greater than 50 watts power,

with N-type male connector (Pasternack Enterprises PE6106 or equivalent).

Vehicle-Mounted

Antenna

Tests are performed with the vehicle-mounted antenna per the installation

described in Section 7 of this manual.

16.3 TESTING WITH A DUMMY LOAD

Figure 16-1 shows basic interconnections required for the following test procedure.

1. Using the N-type male to TNC-type male coaxial jumper cable, connect the radio’s antenna connector

to the wattmeter’s input.

2. Connect the dummy load to the wattmeter’s output (in place of the antenna cable and the antenna).

MM-007024-001

GPS ANTENNA

CONNECTION

NOT SHOWN. Wattmeter

N-Type to

TNC-Type Adaptor

TNC Male to N Female

Coaxial Jumper Cable

Slug

(25 W, 400–

1000 MHz) Dummy

Load

Antenna

OUT

Radio’s Antenna

Cable

TNC Female

Connector

M7250

Mobile Radio

(Rear View)

Radio’s DC

Power Cable

Installation’s DC

Power Cable

From 13.8-Volt

Fused Power Source

3-Pin

Connectors

Radio’s I/O

Cable

44-Pin

Connectors

SERIALMODEMGPS

Personal Computer (PC)

Running Terminal

Application

COM1 Port

Serial Programming Cable

MAMROS0055 (or equivalent)

Full-Data I/O Option Cable

1000022242-0001

Programming Option Cable

1000022242-0002

(Has the “SERIAL” connector only)

9-Pin

Connectors

No GPS/MODEM connection

required when programming.

Figure 16-1: Wattmeter Connections

3. If necessary, apply power to the radio and turn it on.

4. Set the radio to a test channel.

5. Position the wattmeter’s slug to measure forward RF output power. Rotate it if necessary. The arrow

on the face of the slug must point away from the radio and towards the dummy load for forward

power measurements.

6. Using Full-Data I/O Option Cable 1000022242-0001 and Serial Programming Cable MAMROS0055

(or equivalent), connect the radio’s serial port to the Personal Computer’s COM1 serial port. The

Serial Programming Cable is a standard modem-type serial interface cable.

7. At the computer, start the terminal application (e.g., HyperTerminal) and verify its configuration as

listed in Table 16-1.

8. Measure the radio’s RF output power by typing these commands. Send the commands in the order

presented. For the ^ symbol, type ^ (shifted 6 key on a standard keyboard). For letters, observe case

(e.g., type W, not w). Press the <Enter> key after typing each command:

^8 — puts the radio into 100% duty cycle test mode

^W — causes the radio to transmit

^X — causes the radio to terminate transmissions

atz9 — causes the radio to reboot

MM-007024-001

NOTE

Transmit only for as long as needed to take the measurement, then immediately disable the

transmission.

9. Compare the wattmeter reading with the target RF output power range of 11.8 – 20.0 watts.

10. Record the wattmeter reading for RF output power into the dummy load, or take remedial action and

measure the output again:

• If the wattmeter reading is within the range, record the measured value in the appropriate

space on the data collection form near the end of this manual.

• If the wattmeter reading is outside the range, verify the radio’s power supply voltage (i.e.,

battery voltage) is within the specified range, recheck all connections and measure the RF output

power again. If this fails to produce a reading within the range, replace it and repeat this

procedure.

16.4 TESTING WITH THE ANTENNA

The radio must be set to OTP mode (see Section 16.1) to perform the following tests. It is recommended

that a test channel be allocated for this testing; otherwise, interference with network users tuned to the

channel on which the radio is transmitting may occur. Also, observe the safety information presented

in Section 1 (page 5) of this manual!

1. Connect the radio’s antenna connector to the wattmeter and antenna as shown in Figure 16-1.

2. If necessary, apply power to the radio, turn it on, and set it to OTP mode.

3. Set the radio to a test channel, if available.

4. Position the wattmeter’s slug to measure forward RF output power. Rotate it if necessary. The arrow

on the face of the slug must point away from the radio and towards the antenna for forward power

measurements.

5. Using the Full-Data I/O Option Cable 1000022242-0001 and Serial Programming Cable

MAMROS0055 (or equivalent), connect the radio’s serial port to the Personal Computer’s COM1

serial port. The Serial Programming Cable is a standard modem-type serial interface cable.

6. At the computer, start the terminal application (e.g., HyperTerminal) and verify its configuration as

listed in Table 16-1.

7. Measure the radio’s forward RF output power into the antenna by typing these commands. Send the

commands in the order presented.

^8 — puts the radio into 100% duty cycle test mode

^W — causes the radio to transmit

^X — causes the radio to terminate transmissions

atz9 — causes the radio to reboot

NOTE

Transmit only for as long as needed to take the measurement, then immediately disable the

transmission.

8. Compare the wattmeter reading with the target RF output power range of 11.8 – 20.0 watts.

MM-007024-001

9. Record the wattmeter reading for forward power into the antenna, or take remedial action and

measure the output again.

• If the wattmeter reading is within the range, record the value in the appropriate space on the

data collection form near the end of this manual.

• If the wattmeter reading is outside the range, verify the radio’s power supply voltage (i.e.,

battery voltage) is within the specified range, recheck all connections, and measure the forward

power again. If this fails to produce a reading within the range, check all cabling and connections,

and repeat the testing procedure to this point. In the event the wattmeter reading still falls outside

the range, replace the antenna, make sure all connections are seated firmly, and repeat the testing

procedure.

10. Position the wattmeter’s slug to measure reverse (reflected) RF power from the antenna. The arrow

on the face of the slug must point away from the antenna and toward the radio to measure reverse

power.

11. Measure the reverse (reflected) RF power from the antenna by typing these commands:

^8 — puts the radio into 100% duty cycle test mode

^W — causes the radio to transmit

^X — causes the radio to terminate transmissions

atz9 — causes the radio to reboot

NOTE

Transmit only for as long as needed to take the measurement, then immediately disable the

transmission.

12. Compare the wattmeter reading with the RF power output range of 2 watts or less.

13. Record the wattmeter reading for reverse RF power from the antenna, or take remedial action and

measure the output again.

• If the wattmeter reading is within the range, record the value in the appropriate space on the

data collection form near the end of this manual.

• If the wattmeter reading is outside the range, make sure the antenna is consistent with the

specified frequency range of the radio. Recheck all antenna connections, and measure the reverse

power again. If this fails to produce a reading within the range, replace the antenna and repeat the

entire antenna test procedure. Any value exceeding the maximum allowable reflected power

value will result in a diminished RF output signal.

14. Disconnect the coaxial cable jumper and wattmeter.

15. Permanently connect the mobile antenna cable to the radio’s antenna cable by mating the two TNC

connectors together. Use two pairs of slip-jaw pliers to gently tighten this connection. Do not over

tighten and do not twist either cable.

NOTE

To prevent RF leakage and ensure peak performance, make sure the RF connectors are

tight, but do not over tighten so connector damage will not occur.

MM-007024-001

WARNING

Improper installation of the RF cables may lead not only to poor radio performance but

also to harmful exposure to RF electromagnetic energy.

16. Disconnect the computer’s COM1 serial port from the radio’s serial port.

Testing is complete. The radio is now ready for normal communications.

MM-007024-001

16.5 TEST PERFORMANCE DATA FORM

1. Enter the information requested on this data collection form. Clip this form and file it as a permanent record

of the tested performance of the installed Full-Duplex M7250.

Clip



Here

Company Performing Installation Technician Performing Test

Date of Test

(mm/dd/yyyy)

Mobile Radio

Serial Number Antenna Make and Model

Power Into a Dummy

Load

Watts

Forward Power With

Antenna Reflected Power

With Antenna

Watts

MM-007024-001

This page intentionally left blank

MM-007024-001

17 COMPLETE THE INSTALLATION

Double-check the following items before considering the installation completed:

• Verify all newly installed mechanical hardware is mounted securely and all respective mounting

hardware is tight.

• Verify all electrical interconnections are connected properly and the associated connector attachment

hardware is tight. Pay special attention to all RF antenna cables!

• Verify all related fuses are correctly installed and properly rated.

• Verify all electrical cables and wiring are tied, stowed, and protected so they are out of the way of

casual contact, away from sources of extreme heat, and wire chafing cannot occur. Pay special

attention to all RF antenna cables!

• To prevent fumes from entering the vehicle’s passenger compartment, seal the hole/grommet/wire

combination at the firewall with a silicon-based sealer.

• Verify all vehicle components are properly reinstalled such as kick panels, headliners, and seats.

• If the installation includes a separately-mounted on/off power switch for manually turning the radio

(and possibly others systems) on and off, verify it is labelled accordingly. For example: “Radio

ON/OFF.”

• Remove all tools and unused hardware from the vehicle.

• Verify the test performance data has been recorded on the data collection form shown in this manual.

MM-007024-001

18 WARRANTY

A. M/A-COM, Inc. (hereinafter "Seller") warrants to the original purchaser for use (hereinafter "Buyer")

that Equipment manufactured by or for the Seller shall be free from defects in material and

workmanship, and shall conform to its published specifications. With respect to all non-M/A-COM

Equipment, Seller gives no warranty, and only the warranty, if any, given by the manufacturer shall

apply. Rechargeable batteries are excluded from this warranty but are warranted under a separate

Rechargeable Battery Warranty (ECR-7048).

B. Seller’s obligations set forth in Paragraph C below shall apply only to failures to meet the above

warranties occurring within the following periods of time from date of sale to the Buyer and are

conditioned on Buyer’s giving written notice to Seller within thirty (30) days of such occurrence:

1. for fuses and non-rechargeable batteries, operable on arrival only.

2. for parts and accessories (except as noted in B.1) sold by Seller’s Service Parts

Operation, ninety (90) days.

3. for PANTHER™ Series hand-portable and mobile radios, two (2) years.

4. for all other equipment of Seller’s manufacture, one (1) year.

C. If any Equipment fails to meet the foregoing warranties, Seller shall correct the failure at its option (i)

by repairing any defective or damaged part or parts thereof, (ii) by making available at Seller’s factory

any necessary repaired or replacement parts, or (iii) by replacing the failed Equipment with equivalent

new or refurbished Equipment. Any repaired or replacement part furnished hereunder shall be

warranted for the remainder of the warranty period of the Equipment in which it is installed. Where

such failure cannot be corrected by Seller’s reasonable efforts, the parties will negotiate an equitable

adjustment in price. Labor to perform warranty service will be provided at no charge during the

warranty period only for the Equipment covered under Paragraph B.3 and B.4. To be eligible for no-

charge labor, service must be performed at a M/A-COM factory, by an Authorized Service Center

(ASC) or other Servicer approved for these purposes either at its place of business during normal

business hours, for mobile or personal equipment, or at the Buyer’s location, for fixed location

equipment. Service on fixed location equipment more than thirty (30) miles from the Service Center or

other approved Servicer’s place of business will include a charge for transportation.

D. Seller’s obligations under Paragraph C shall not apply to any Equipment, or part thereof, which (i) has

been modified or otherwise altered other than pursuant to Seller’s written instructions or written

approval or, (ii) is normally consumed in operation or, (iii) has a normal life inherently shorter than the

warranty periods specified in Paragraph B, or (iv) is not properly stored, installed, used, maintained or

repaired, or, (v) has been subjected to any other kind of misuse or detrimental exposure, or has been

involved in an accident.

E. The preceding paragraphs set forth the exclusive remedies for claims based upon defects in or

nonconformity of the Equipment, whether the claim is in contract, warranty, tort (including

negligence), strict liability or otherwise, and however instituted. Upon the expiration of the warranty

period, all such liability shall terminate. The foregoing warranties are exclusive and in lieu of all other

warranties, whether oral, written, expressed, implied or statutory. NO IMPLIED OR STATUTORY

WARRANTIES OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE SHALL

APPLY. IN NO EVENT SHALL THE SELLER BE LIABLE FOR ANY INCIDENTAL,

CONSEQUENTIAL, SPECIAL, INDIRECT OR EXEMPLARY DAMAGES.

This warranty applies only within the United States.

M/A-COM, Inc. M/A-COM, Inc.

1011 Pawtucket Blvd. 221 Jefferson Ridge Parkway

Lowell, MA 01853 Lynchburg, VA 24501

1-877- 1-800-528-7711

ECR-7047C

MM-007024-001

19 WIRING DIAGRAM: MOBILE RADIO WITH CH-103 CONTROL HEAD

FS24473 FUSE KIT

MAMV-SU5B

CH-103 RELAY KIT

I/O

#12-10AWG

MOISTURE RESISTANT

BUTT SPLICE

5A ATC FUSE,

FUSE HOLDER,

AND JUMPER

(FROM FS23058

FUSE KIT)

15A ATC FUSE

(FROM FS23057

FUSE KIT)

MACDOS0010

CAN TERMINATOR

#12-10AWG

MOISTURE RESISTANT

BUTT SPLICE

3/8"

RING TERMINAL

CONNECT TO

VEHICLE CHASSIS

GND

#10 AWG,

BLACK, 1 FT

3/8 I.D.

RING TERMINAL

WAGO FUSE

BLOCK

(in trunk)

T-TAP

DISCONNECT

(through

grommet

in firewall)

(through

grommet in

firewall)

VEHICLE

DISTRIBUTION

BLOCK (IF AVAILABLE)

3/8"

RING TERMINAL

ATC FUSE

HOLDER

30A FUSE

1000003678

BASE BRACKET

(SHOWN WITH HARDWARE)

#10 AWG,

RED, 20 FT

ANTENNA

MAMV-AN3N

RF ANTENNA

(OPTIONAL)

MAMV-AN3L

GPS ANTENNA KIT

(OPTIONAL)

(Short as possible)

MAMROS0075-N1210

DC POWER CABLE

D.C. POWER

POS

NEG

VEHICLE BATTERY

WHITE

CH AUDIO

CH CAN

AJ03067

CONTROL HEAD MOUNTING BRACKET

(SHOWN WITH HARDWARE)

(SHORT SECTION OF

WIRE CUT FROM WHITE

WIRE FOR SPLICING)

FS23057

FUSE KIT

WHITE

RED

BLACK

(WHITE WIRE, LABELED

AND COILED NEAR FUSE BOX)

IGNITION

SENSE WIRE

1000005812-0001

SPEAKER CABLE

MACDOS0006-RR030 CAN CABLE

MACDOS0010

CAN TERMINATOR

MAMV-MC7W

MICROPHONE,

NOISE-CANCELING

LS102824V10

EXTERNAL SPEAKER

(MAMROS0035 WITH CABLE)

CH POWER

MAMROS0075-N1210

DC POWER CABLE

MACDOS0003

(MAMV-CP9D)

CONTROL HEAD CH-103

CONNECT TO

VEHICLE CHASSIS

GND

3/8 I.D.

RING TERMINAL

BLACK

QUICK

CONNECT

TAB

ATM FUSE

HOLDER

2A FUSE

VEHICLE FUSE BLOCK

RED

RU25011-0001

(MAMV-FDLXX)

TRUNK-MOUNT

FULL DUPLEX RADIO

MAMROS0088

TIME-DELAY RELAY

#20-18AWG

BUTT SPLICE

YELLOW

BLACK

WHITE

RED

CONNECT TO

VEHICLE CHASSIS

GND

#18 AWG, WHITE

(not supplied)

TO WAGO

FUSE BLOCK

RED WIRE FROM

CONTROL HEAD

SEE VIEW 'A' FOR I/O

CONNECTION DETAILS

VIEW A

GPS

I/O

1000022242-0001

FULL I/O OPTION

CABLE

1000022242-0002

PROGRAMMING OPTION

CABLE

MM-007024-001

Wiring Diagram Inside

(With CH103)

MM-007024-001

20 WIRING DIAGRAM: MOBILE RADIO WITH CH-103PA CONTROL HEAD

RU25011-0001

(MAMV-FDLXX)

TRUNK-MOUNT

FULL-DUPLEX RADIO

M/A-COM Wireless Systems

221 Jefferson Ridge Parkway

Lynchburg, Virginia 24501

(Outside the USA, 434-385-2400) Toll Free 800-528-7711

www.macom-wireless.com Printed in U.S.A.

Wiring Diagram Inside

(With CH-103PA)

HARRIS M7200 M7200 700/800 MHz Mobile Radio User Manual manual 2

Harris Corporation M7200 700/800 MHz Mobile Radio manual 2

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