Professional Radio GM Series Radio Installation Manual 68P64112B30 Issue: July 2000
ii Computer Software Copyrights The Motorola products described in this manual may include copyrighted Motorola computer programs stored in semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form, the copyrighted computer program.
iii SAFETY INFORMATION Read this information before using your radio. SAFE AND EFFICIENT OPERATION OF MOTOROLA TWO-WAY RADIOS This document provides information and instructions for the safe and efficient operation of Motorola Portable and Mobile Two-Way Radios. The information provided in this document supersedes the general safety information contained in user guides published prior to 1 January 1998.
iv Mobile Antenna Installation Install the vehicle antenna external to the vehicle and in accordance with: a. The requirements of the antenna manufacturer/supplier b. Instructions in the radio installation manual. Control Station Operation When radio equipment is used to operate as a control station, it is important that the antenna be installed outside the building and away from places where people may be in close proximity.
v 5. Ensure that there is a minimum of two vehicle lengths between the front of the vehicle and any object in the vehicle’s forward path. Then, set the vehicle transmission selector to DRIVE. Press the brake pedal just far enough to stop the vehicle motion completely. Key the radio transmitter. Verify that the vehicle does not start to move while NOT speaking into the microphone. 6. Repeat Step 5, except do so while speaking into the microphone. 7.
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vii Table of Contents SAFETY INFORMATION ....................................................................................... iii Chapter 1 INSTALLATION 1.0 Introduction.......................................................................................................... 1-1 1.1 General Information ....................................................................................... 1-1 1.2 Plan the Installation....................................................................................
viii 4.4 4.5 4.6 4.7 4.8 Voltage Regulator Noise...............................................................................2-11 Hood and Trunk Lid Noise ............................................................................2-11 Other Electrical Noises .................................................................................2-12 Wheel Static..................................................................................................2-12 Ground Bonding.................................
Chapter 1 INSTALLATION 1.0 Introduction 1.1 General Information There are two methods of installing your mobile radio: 1. Using the direct mounting trunnion and power cables supplied with a standard radio package. 2. Mounted in the car radio cut-out (using the required GLN7320_ mounting kit, per ISO7736). An accessory connector on the rear of the radio (see Figure 1-4 Connections to the Back of Radio) enables you to attach different accessories required for the installation.
1-2 INSTALLATION The following table lists power cables available for this radio: Table 1-1 Power Cables Number 2.2 Description Rating HKN4137_ Low power cable to battery 1-25W; 15A fuse; 14 AWG 3m HKN4191_ High Power Cable to battery 25-45W; 20A fuse; 12 AWG 3m Power Cable Installation Procedure Begin the power cable installation as follows: 1. ! CAUTION: Improper handling with the power cable may cause shorting to ground. Ensure that during radio installation the power cable fuse is removed.
DC Power Cable Installation 4. 1-3 Connect the black lead of the power cable to the nearest vehicle chassis ground point (using the provided ring lug if necessary). Shorten the black lead to remove any excess cable. (See Figure 1-2 Power Cable Assembly.) NOTE Locate a good vehicle ground point. The vehicle frame provides the best ground. Optimum radio performance can only be achieved with a very low resistance ground connection.
1-4 INSTALLATION 3.0 Trunnion Installation 3.1 Planning the Mounting Trunnion Installation The standard mounting trunnion allows the radio to be mounted to a variety of surfaces. 3.2 1. Ensure the surface can support the weight of the radio. 2. Although the trunnion can be mounted to a plastic dashboard, it is recommended that the mounting screws be located so they penetrate the supporting metal frame of the dashboard. Trunnion Installation Procedure 1.
Antenna Installation 3.3 1-5 Control Head Mounting Position The control head is designed to be removed from the housing and turned to any position within a 180° radius. This provides multiple mounting options for the radio. For example, the radio may be mounted on either side of the vehicle transmission tunnel to facilitate the safest and most ergonomically ideal position. The control head may then be turned to provide the most convenient access. To reposition the control head: ! 1.
1-6 INSTALLATION The table below lists the minimum distance for several different ranges of rated radio power. Table 1-2 Rated Power and Distance Rated Power of Vehicle-Installed Mobile Two-Way Radio 4.2 Minimum Distance from Transmitting Antenna 7 to 15 Watts 30.5 Centimetres (1 Foot) 16 to 50 Watts 61 Centimetres (2 Feet) More than 50 Watts 91.5 Centimetres (3 Feet) Selecting an Antenna Site 1. Install the vehicle antenna external to the vehicle and in accordance with: a.
Antenna Installation 1-7 Accessory Connector Kit Antenna Connector To Battery + via Fuse F1 (red) Power Connector Vehicle Chassis Ground (black) Figure 1-4 Connections to the Back of Radio 4.4 FL0830249-O Completing the Installation 1. Mount the microphone clip to a convenient spot near your radio. 2. Your microphone has a telephone-type connector at the end of its cord. Plug the microphone into the control head connector. 3.
1-8 INSTALLATION TRANSMISSION HUMP MOUNTING Thumb Screw (2) Tab Tab Mounting Surface Trunnion Mounting Bracket Tab 1.12" (28mm) 1.84" (46mm) 2.92" (73mm) 1.84" (46mm) 2.
Installation Options 1-9 5.0 Installation Options 5.1 Radio Mounting in Dashboard 5.1.1 To Install the Radio in an Automotive Dashboard: 1. Open out the radio cut-out in the dashboard to ISO 7736 specification (182mm x 53mm). 2. Remove the Top plastic cover off the radio. 3. Insert the mounting frame into the cut-out and retain it by bending back the relevant fixing tabs, using all 6 where possible, to hold it in place. Press the bezel onto the mounting frame. NOTE 1.
1-10 5.1.3 INSTALLATION To Remove the Radio / Remote Mount from the Frame 1. Push the two demounting tools (see Figure 1-6 Mounting the Radio into the Dashboard) through the openings in the frame until the two springs release the radio. 2. Slide out the radio. NOTE 1. The fixing tabs should be checked for tightness each time the radio is removed. The tabs are easily tightened by twisting a large flat-bladed screwdriver in the slot behind the tabs. 2.
Installation Options 1-11 5.3 Remote Control Head Installation 5.3.1 Removing the Front Housing 1. Remove the Controlhead from the Transceiver by inserting the dismantling tool (Motorola part number 6686119B01) in the recess between the Controlhead and the Transceiver. 2. Split the Controlhead into Front and Back housings by inserting the dismantling tool in the recess between them. NOTE 1. To minimise cosmetic damage disassemble from the bottom side, (label side). 2.
1-12 5.3.4 INSTALLATION To Install the Remote Controlhead: 1. Position the Remote Mount Bracket (Item2 in Figure 1-8 Remote Front and Back Housings) in the desired location and mark the positions of the mounting holes. 2. Centrepunch the marked spots and drill 4mm holes at each spot. 3. Fix the Remote Mount Bracket in position using the supplied screws. 4. Route the Remote Cable (Table 1-3) as required, feeding it through the bracket (a 20mm hole is required for the cable plug). 5.
Accessory Connections 1-13 6.0 Accessory Connections 6.1 Accessory Connector Pin Functions This section gives a description of the accessory connector pin functions. ! CAUTION: The accessory connections shown are not compatible to some other models of Motorola radios. Check the appropriate accessory or technical manual for further information. Table 1-4 Connector Pin Functions Pin Function Description 1 External Speaker - Speaker - and Speaker + (Pin 16) are used to connect an external speaker.
1-14 INSTALLATION Table 1-4 Connector Pin Functions Pin Function Description 11 Receiver Audio (NPD Data In) There are two possible outputs: (1) Discriminator Audio; and (2) Continuous filtered RX audio. The nominal output level for Discriminator Audio is 330m Vrms at 60% deviation and for Filtered Audio 600m Vrms at 60% deviation at 1kHz. Function depends on dealer programming. For NPD calls, this uses discriminator audio and cannot be configured by the CPS.
Accessory Connections 6.2 ! 1-15 Accessory Connection Plan CAUTION: The accessory connections shown are not compatible to some other models of Motorola radios. Check the appropriate accessory or technical manual for further information. Ensure correct position of the accessory connector. 20 2 4 6 8 10 12 14 16 18 19 1 3 5 7 9 11 13 15 17 * Note the location of pin 1.
1-16 INSTALLATION
Chapter 2 REDUCING NOISE INTERFERENCE 1.0 Introduction Electrical noise generated by the electrical system of a vehicle, as well as local ambient noise, can interfere with normal operation of mobile radios. Satisfactory operation of a mobile radio may require slight or heavy noise reduction, depending upon the relative strength of the radio signal, and upon the ability of the radio to reject undesired noise.
2-2 REDUCING NOISE INTERFERENCE When a spark discharge or arc takes place through air, energy is radiated at frequencies from a few kilohertz to hundreds of megahertz. This spurious radiation may have some energy radiated at a frequency near or even identical to the desired radio signal. The standard receiver may be unable to distinguish between the two signals (desired and noise). Therefore they both enter the receiver, resulting in degradation of the desired signal.
Operation of a Conventional Ignition System 1.4 2-3 Induced Noise Induced noise enters the radio through the proximity of radio wiring to other wiring in the vehicle. Electrical currents through the standard vehicular wiring can induce undesirable noise signals into the radio cabling. Communication is degraded simply because the wiring provides a transformertype coupling action without any actual physical connection. Induced noise can degrade both transmit and receive performance of a mobile radio. 2.
2-4 REDUCING NOISE INTERFERENCE HV Lead Distributor Ignition Switch Ignition Coil Breaker Points Spark plug Battery leads Spark Plugs Cam Condenser Rotor Gap Ignition Switch Battery Breaker Points Ignition Coil Lead Inductance Stray Capacitance Cam Spark Plug Gap Condenser FL0830261-O Figure 2-2 Typical Vehicular Ignition System, Simplified Schematic Diagram The battery is connected to the primary winding of the coil through the ignition switch.
Detection of Noise Sources 2-5 3.0 Detection of Noise Sources 3.1 Noise Detection Procedure Detection of offending noise sources is the heart of noise suppression because, after the noise source is identified, the solution becomes obvious. A logical methodical procedure is basic to the effective noise suppression. Use your available equipment to best advantage.
2-6 REDUCING NOISE INTERFERENCE Ignition Switch 3 1 Ignition Coil Resistive Wire (Note 2) 6 Resistor Spark Plugs (Note 2) Battery Distributor Breaker Points Notes: 1. Noise reduction can only be achieved if components are grounded properly. Be sure that all the capacitors and the generator filed suppressor assembly are grounded properly. This may require bonding straps for proper bypass capacitor effectiveness. 2. Items not supplied in kit. See auto parts dealer.
Noise Reduction Techniques 3.2 2-7 Sources of Noise Some interference is due to geographic location. This interference does not need to be eliminated since it is possible for the vehicle to be moved away from the interfering noise source. Noise from power lines, fluorescent lights, and other vehicles (emitting high levels of radiated noise) are examples of noise which depends upon location. Make certain that you are not attempting to suppress noise in a vehicle while it is in a noisy location.
2-8 REDUCING NOISE INTERFERENCE 4.2 Ignition System Interference 4.2.1 Engine Maintenance and Tune-Up The most important step in reducing ignition noise is insuring that the engine is in proper tune. Pay particular attention to the following points if the noise interference from the ignition system is severe: 4.2.2 1. Be sure the spark plugs distributor points, and condenser are in good condition. 2. Be sure ignition timing is properly adjusted. 3.
Noise Reduction Techniques 2-9 Step 3. Connect wire lead to capacitor using lockwasher and nut. Step 4. Connect capacitor lead to battery post. From distributor Distributor Post Step 1. Mount Capacitor (0.1µF Coaxial Type) to vehicle chassis using lockwasher and self-tapping screw. Battery Post Step 2. Disconnect wire (dashed) from battery post and connect to capacitor using lockwasher and nut. FL0830264-O Figure 2-5 Ignition Coil Noise Suppression 4.2.
2-10 REDUCING NOISE INTERFERENCE Step 1. Mount Capacitor (0.5µF Coaxial Type) under generator ground screw. Step 3. Connect wire lead to capacitor using lockwasher and nut. Step 4. Connect capacitor lead to armature post. Caution: Do not connect capacitor to field teminal. Step 2. Disconnect wire (dashed) from armature post and connect to capacitor using lockwasher and nut. FL0830310-O Figure 2-6 Generator Whine Suppression Step 1. Mount Capacitor to (0.
Noise Reduction Techniques 4.4 2-11 Voltage Regulator Noise This type of interference is characterized by erratic popping noises which change only slightly with changes in engine speed. The noise is generated by arcing in the vibrating breaker contacts of the voltage regulator. It can be suppressed by connecting a 0.5 µF coaxial capacitor (Motorola Part No. 0882571B01) in the battery and armature leads of the voltage regulator (see Figure 2-8 Voltage Regulator Noise Suppression).
2-12 4.6 REDUCING NOISE INTERFERENCE Other Electrical Noises Other elements of the electrical system which can generate noise are listed below. These can be suppressed by connecting a 0.5 µF bypass capacitor between the noise source and ground. 4.7 1. Ammeter-to-battery lead 2. Gauges (oil, fuel, temperature) 3. Ignition Switch 4. Lamp bulbs (headlamps, tail lamps, dome lamps, etc.) 5. Accessory wiring (electrical fuel pump, electric windshield wipers, heater fan motor, window openers, etc.
