GM1200E Mobile Radio GM Series/GM1200E Service Manual 6864115B12

User Manual: -GM Series/GM1200E service manual 6864115B12

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European Publications Department (RPG) Fleet, Hampshire, England
Issue: May 1998
GM1200E
Mobile Radio
Basic Service Manual
68P64115B12
ii
Cautions and Warnings
iii
CAUTION
ELECTROSTATIC SENSITIVE DEVICES
PRECAUTIONS SHOULD BE TAKEN TO MINIMIZE THE RISK OF DAMAGE BY
ELECTROSTATIC DISCHARGE TO ELECTROSTATIC SENSITIVE DEVICES (ESDs).
ANY DEVICES EMPLOYING METAL OXIDE SILICON (MOS) TECHNOLOGY ARE
PARTICULARLY SUSCEPTIBLE.
CIRCUIT DIAGRAMS MARKED WITH THE ABOVE SYMBOL INDICATE ELECTRONIC
CIRCUITS (PECs) FOR WHICH ESD HANDLING PRECAUTIONS ARE NECESSARY.
THE USER SHOULD REFER TO BS5783, 1984: HANDLING OF ELECTROSTATIC
SENSITIVE DEVICES. THIS BRITISH STANDARD SUPERSEDES DEF STAN 59-98,
ISSUE 2.
Cautions and Warnings
iv
Cautions and Warnings
v
WARNING
SAFETY WARNINGS
THE ELECTRICAL POWER USED IN THIS EQUIPMENT IS AT A VOLTAGE HIGH
ENOUGH TO ENDANGER LIFE.
BEFORE CARRYING OUT MAINTENANCE OR REPAIR, PERSONS CONCERNED
MUST ENSURE THAT THIS EQUIPMENT IS ISOLATED FROM THE ELECTRICAL
SUPPLY AND TESTS ARE MADE TO ENSURE THAT ISOLATION IS COMPLETE.
WHEN THE SUPPLY CANNOT BE ISOLATED, MAINTENANCE AND REPAIR MUST BE
UNDERTAKEN BY PERSONS WHO ARE FULLY AWARE OF THE DANGERS INVOLVED
AND WHO HAVE TAKEN ADEQUATE PRECAUTIONS TO PROTECT THEMSELVES.
COMPONENTS CONTAINING BERYLLIUM OXIDE ARE USED IN THIS EQUIPMENT.
DUST FROM THIS MATERIAL IS A HEALTH HAZARD IF INHALED OR ALLOWED TO
COME INTO CONTACT WITH THE SKIN.
GREAT CARE MUST BE TAKEN WHEN HANDLING THESE COMPONENTS WHICH
MUST NOT BE BROKEN OR SUBJECTED TO EXCESSIVE HEATING. DEFECTIVE
COMPONENTS MUST BE DISPOSED OF IN ACCORDANCE WITH CURRENT
INSTRUCTIONS.
LEAD ACID BATTERIES MAY BE FITTED AS THE STANDBY BATTERY. CARE MUST BE
TAKEN WHEN REMOVING OR INSTALLING THESE BATTERIES TO:
1. ENSURE THAT THE TERMINALS ARE NOT SHORTED TOGETHER.
2. PREVENT SPILLAGE OF THE CORROSIVE ELECTROLYTE.
Cautions and Warnings
vi
Basic Service Manual vii
Basic Service Manual
Contents
Contents
Chapter
1.0 General
Gives a brief introduction into the manual; the service policy, models and
technical specifications.
2.0 Maintenance
Describes how to disassemble/assemble the radio for maintenance purposes
and provides lists of test equipment.
3.0 Accessories
Gives service details and provides a list of accessories available for the radio.
4.0 Radio Tuning Procedure
Provides detailed radio tuning procedure for all bands available.
Appendix
A.0 PL (CTCSS) / DPL Codes
B.0 External Device Connectors
C.0 Non Prescribed Data (NPD) Application Notes
Contents
viii Basic Service Manual
General 1-i
Chapter 1
General
Table of Contents
Table of Contents
Paragraph Page
1.0 Introduction
................................................................................................ 1
2.0 Scope of Manual
........................................................................................ 1
3.0 How to Use This Manual
............................................................................ 1
4.0 Warranty and Service Support
................................................................. 1
4.1 Warranty Period........................................................................................... 1
4.2 After Warranty Period .................................................................................. 2
4.3 Piece Parts .................................................................................................. 2
4.4 Technical Support........................................................................................ 2
4.5 Associated Documentation.......................................................................... 2
5.0 Model Chart
................................................................................................ 3
5.1 Service Options ........................................................................................... 4
6.0 Technical Specifications
........................................................................... 5
6.1 General........................................................................................................ 5
6.2 Transmitter................................................................................................... 5
6.3 Receiver....................................................................................................... 6
6.4 Self-Quieting Frequencies ........................................................................... 6
Table of Contents
1-ii General
Introduction
General 1-1
1.0 Introduction
This chapter outlines the scope and use of the basic service manual and provides an overview of
the warranty and service support.
2.0 Scope of Manual
This manual is intended for use by technicians familiar with similar types of equipment. It contains
levels 1 and 2 service information required for the equipment described and is current as of the
printing date. Changes which occur after the printing date maybe incorporated by a complete Basic
Service Manual revision to your Product Manual or alternatively as additionson a chapter basis.
3.0 How to Use This Manual
The basic service manual contains a general chapter giving information on warranty and support,
model charts and technical specifications. Chapters 2 and 3 contain level 1 and level 2 service
information for the radios and accessories respectively. Chapter 4 contains radio tuning procedures.
Refer to the Table of Contents for a general overview of the manual.
4.0 Warranty and Service Support
Motorola offers long term support for its products. This support includes full exchange and/or repair
of the product during the warranty period, and service/ repair or spare parts support out of warranty.
Any "return-for-exchange" or "return-for-repair" by an authorised Motorola Dealer must be
accompanied by a Warranty Claim Form. Warranty Claim Forms are obtained by contacting an
Authorised Motorola Dealer.
4.1 Warranty Period
The terms and conditions of warranty are defined fully in the Motorola Dealer or Distributor or
Reseller contract. These conditions may change from time to time and the following notes are for
guidance purposes only.
In instances where the product is covered under a "return for replacement" or "return for repair"
warranty, a check of the product should be performed prior to shipping the unit back to Motorola. To
ensure the product has been correctly programmed or has not been subjected to damage outside
the terms of the warranty.
Prior to shipping any radios back to the appropriate Motorola warranty depot, please contact
Customer Services. All returns must be accompanied by a Warranty Claim Form, available from
your Customer Services representative. Products should be shipped back in the original packaging,
or correctly packaged to ensure no damage occurs in transit.
1
Warranty and Service Support
1-2 General
4.2 After Warranty Period
After Warranty period, Motorola continues to support products in two ways.
Firstly, Motorola's Radio Parts and Service Group (RPSG) offer a repair service to both end users
and dealers at competitive prices.
Secondly, RPSG supplies individual parts and modules that can be purchased by dealers who are
technically capable of performing fault analysis and repair. To assist in this level of service, a
Detailed Service Manual containing level 3 repair information may be purchased separately.
4.3 Piece Parts
Some replacement parts, spare parts, and/or product information can be ordered directly. If a
complete Motorola part number is assigned to the part, it is available from Motorola Radio Parts and
Service Group (RPSG). If a generic part is listed or only a part description is listed, the part is not
normally available from Motorola. If a parts list is not included, this generally means that no user-
serviceable parts are available for that kit or assembly.
All orders for parts/information should include the complete Motorola identification number. All part
orders should be directed to your local RPSG office.
Head Office
Motorola G.m.b.H.
European Parts Department
65232 Taunusstein
Germany
4.4 Technical Support
Motorola Product Services is available to assist the dealer/distributors in resolving any malfunctions
which may be encountered. Initial contact should be by telephone whenever possible. When
contacting Motorola Technical Support, be prepared with the product model number and the unit’s
serial number.
4.5 Associated Documentation
Publication Number Description
68P64115B15 GM1200E Detailed Service Manual (for Level 3 repair only)
68P64117B01 Shared Mobile Radio Systems (SMR) using MPT1327
A System Integrators Cookbook
68P02900X57-A Data Application Notes for 1200 Series Radios
ELN4683A 1200 Series Product Manual
Model Chart
General 1-3
5.0
Model Chart
Description
GM1200E 403-470MHz 12.5kHz 25W DB
GM1200E 403-470MHz 25kHz 25W DB
GM1200E 403-470MHz 12.5kHz 25W KD
GM1200E 403-470MHz 25kHz 25W KD
GM1200E 136-174MHz 12.5kHz 25W DB
GM1200E 136-174MHz 25kHz 25W DB
GM1200E 136-174MHz 12.5kHz 25W KD
GM1200E 136-174MHz 25kHz 25W KD
GM1200E
403-470 MHz UHF
136-174 MHz VHF
X = Indicates one of each required
Model
M08RHA4CK5_N
M08RHA6CK5_N
M08RHH4CK6_N
M08RHH6CK6_N
M08KHA4CK5_N
M08KHA6CK5_N
M08KHH4CK6_N
M08KHH6CK6_N
Item Description
XXXXXXXXGBN6147_ Packaging Kit
X X X X GCN6109_ Control Head Model K5 Blank
X X X X GCN6110_ Control Head Model K6 Keypad/Display
X X X X GMN6146_ Enhanced Compact Microphone
X X X X GLN7324_ Low Profile Trunnion Kit
X X GUE1124_ RF & HSG UHF 12.5kHz 5-25W
X X GUE1125_ RF & HSG UHF 25kHz 5-25W
X X GUD1326_ RF & HSG VHF 12.5kHz 5-25W
X X GUD1327_ RF & HSG VHF 25kHz 5-25W
XXXXXXXXGKN6270_ Power Cable
X X X X 68P64110B08 GM1200E User Guide M/L
Model Chart
1-4 General
5.1 Service Options
Description
GM1200E 403-470MHz 12.5kHz 25W DB
GM1200E 403-470MHz 25kHz 25W DB
GM1200E 403-470MHz 12.5kHz 25W KD
GM1200E 403-470MHz 25kHz 25W KD
GM1200E 136-174MHz 12.5kHz 25W DB
GM1200E 136-174MHz 25kHz 25W DB
GM1200E 136-174MHz 12.5kHz 25W KD
GM1200E 136-174MHz 25kHz 25W KD
GM1200E
403-470 MHz UHF
136-174 MHz VHF
X = Indicates one of each required
Model
M08RHA4CK5_N
M08RHA6CK5_N
M08RHH4CK6_N
M08RHH6CK6_N
M08KHA4CK5_N
M08KHA6CK5_N
M08KHH4CK6_N
M08KHH6CK6_N
Item Description
XENUD1061AS GM1200E UHF 12.5kHz MD534AD
XENUD1062AS GM1200E UHF 25kHz MD514AD
XENUD1063AS GM1200E UHF 12.5kHz MD534AE
XENUD1064AS GM1200E UHF 25kHz MD514AE
XENUE1071AS GM1200E VHF 12.5kHz MD334AD
XENUE1072AS GM1200E VHF 25kHz MD314AD
XENUE1073AS GM1200E VHF 12.5kHz MD334AE
XENUE1074AS GM1200E VHF 25kHz MD314AE
Technical Specifications
General 1-5
6.0 Technical Specifications
6.1 General
6.2 Transmitter
SPECIFICATION ITEM TYPICAL VALUE
Frequency Range UHF: 403-470 MHz
VHF: 136-174 MHz
Channel Spacing 12.5 kHz or 20/25kHz
Frequency Stability
±
2ppm (UHF) /
±
5ppm (VHF)
Power Supply 10.8 to 15.6V dc, negative earth
Dimensions K5 Model - 44x168x160 mm (HxWxD)
K6 Model - 55x185x167 mm (HxWxD)
Weight 1030g
Operational Temperature - 25
°
C to + 55
°
C
Storage Temperature - 40
°
C to + 85
°
C
Antenna Connection 50
Ω
BNC
Environmental
- Mechanical
- Electrical
Vibration IEC 68/2/27 and Shock IEC 28/2/6
European Dust & Water protection IP54
ETS300-086 RF Specifications
ETS300-113 Cyclic Keying Requirements
ETS300-279 EMC Requirements
ETS300-219 Signalling
SPECIFICATION ITEM TYPICAL VALUE
Channel Spacing 12.5kHz or 20/25kHz
Output Power 5-25W
Modulation Limiting <
±
2.5kHz (12.5kHz); <
±
4kHz (20kHz);
<
±
5kHz (25kHz)
FM hum & noise (CCITT) >40dB (12.5kHz); >45dB (20/25kHz) CCITT
Conducted/Radiated Emission <0.25
µ
W (0.1...1000MHz); <1
µ
W (1...4GHz)
Adjacent Channel Power <-60dB (12.5kHz); <-70dB (20/25kHz)
Audio Response (300 - 3000 Hz) Flat or pre-emphasised
Audio Distortion <5% @ 1kHz, 60% deviation
Transmit turn on time <25msec
Technical Specifications
1-6 General
6.3 Receiver
6.4 Self-Quieting Frequencies
Self-quieting frequencies are frequencies that are also generated by the radio and cause internal
interference. On these frequencies the interference caused by the self-quieter spur is great enough
that a radio will not meet its receiver sensitivity specification.
The frequencies are: UHF 403.2, 420, 436.8 and 453.6MHz.
VHF 151.2 and 168MHz.
SPECIFICATION ITEM TYPICAL VALUE
Channel Spacing 12.5kHz or 20/25kHz
Sensitivity @ 12.5kHz or 20/25kHz < 0.35
µ
V (12dB SINAD)
Intermodulation >65dB ETS; >70dB with Base Option
Adjacent Channel Selectivity >60dB (12.5kHz); >70dB (20/25kHz) ETS
Spurious Rejection >70dB ETS
Audio Distortion @ Rated Audio <5%
Hum and Noise (CCITT) >40dB (12.5kHz); >45dB (20/25kHz) CCITT
Audio Response (300 - 3000 Hz) Flat or De-Emphasised
Co-channel Rejection <12dB (12.5kHz); <8dB (20/25kHz) ETS
Conducted /Radiated Emission <2nW (0,1..1000MHz); <20nW (1..4GHz)
Receive after transmit time <25msec
Audio Output Power <13W external
Maintenance 2-i
Chapter 2
Maintenance
Table of Contents
Table of Contents
Paragraph Page
1.0 Overview
..................................................................................................... 1
2.0 Disassemble the Radio
............................................................................. 1
2.1 Remove the Control Head ........................................................................... 1
2.2 Remove the Top Cover................................................................................ 1
2.3 Remove the Transceiver Board................................................................... 2
2.4 Disassemble the Control Head.................................................................... 3
3.0 Assemble Radio
......................................................................................... 4
3.1 Assemble the Control Head......................................................................... 4
3.2 Replace the Transceiver Board ................................................................... 4
3.3 Replace the Top Cover and Control Head................................................... 4
4.0 Exploded View Diagrams and Parts
......................................................... 5
5.0 Service Aids
............................................................................................... 7
6.0 Test Equipment
.......................................................................................... 8
Table of Contents
2-ii Maintenance
Overview
Maintenance 2-1
1.0 Overview
This chapter explains, step by step, how to disassemble and assemble the radio, to transceiver
board level. The chapter also contains a list of test equipment required to service the radio.
2.0 Disassemble the Radio
2.1 Remove the Control Head
Figure 2-1
Control Head Removal.
1.
Insert a small flat blade screw driver, or similar, in the recess between the control head and the
transceiver (to minimise cosmetic damage to the radio cover start from the bottom side).
2.
Press until the side of the control head releases and then repeat the operation on the opposite
side of the radio.
3.
Pull the control head away from the transceiver.
4.
Remove the flex from the socket on the control head board.
2.2 Remove the Top Cover
Figure 2-2
Top Cover Removal.
1.
Insert a small flat blade screw driver in the side recess of the radio chassis.
2.
Lift the top cover over the chassis.
Recess
Recess
Disassemble the Radio
2-2 Maintenance
2.3 Remove the Transceiver Board
Figure 2-3 Transceiver Board Removal.
1. Remove the power and antenna connector retaining clips by inserting a small flat blade screw
driver between the clip and the top of the chassis wall and gently prying the clip upwards.
2. Remove 13 screws from the transceiver board using a T8 TORX driver.
3. Carefully remove the transceiver board by rotating it out of the chassis:
Slowly lift the board on the front edge, the side with the connector that mates with the control
head, and pull gently toward the front of the radio.
2.4 Disassemble the Control Head
1. To remove the printed circuit board from the control head front housing, first split control head
into front and rear housing. In the front housing, insert a small blade screw driver in the side
groove near the four protruding tabs of the printed circuit board. Remove the board from the
control head front housing.
2. Remove the keypad from the control head housing by lifting up the rubber keypad. Care should
be taken not to touch or get other contaminates on the conductive pads on the under side of
the keypad or conductive contacts on the printed circuit board.
3. Remove the LCD module fom the LCD frame attached to the PCB.
Chassis
Recess
Top Cover
Flex
Transceiver Board
Clip
Clip
Recess
Protruding Tabs
CAUTION: The thermal grease can act as an adhesive and cause the leads of the heat
dissipating devises to be over stressed if the board is lifted too quickly.
Assemble Radio
Maintenance 2-3
Figure 2-4 Control Head Assembly.
3.0 Assemble Radio
3.1 Assemble the Control Head
1. Ensure that the LCD module and frame are correctly positioned on the PCB.
2. Place the keypad onto the board assembly, making sure the keypad is flush with the board.
3. During the installation of the printed circuit board, ensure the four protruding tabs snap into the
recesses.
3.2 Replace the Transceiver Board
1. Inspect and if necessary, reapply thermal grease to the heatsinking pads in the chassis.
2. Before installing the connector retaining clips, ensure that the board is sitting flush on the
chassis mounting surface.
3. Install the 13 screws with 0.4 -07 NM (4-6 in lbs) of torque using a T8 TORX driver.
3.3 Replace the Top Cover and Control Head
1. Position the top cover over the chassis and replace. Ensure that the cross snaps into the
recesses.
2. Connect the control head to the radio by the flex.
Control Head
Housing
Recess
Recess
Keypad
Protruding
Tabs
Printed
Circuit
Board
LCD Module
Control Head
Housing Back
LAPD
00
14
Exploded View Diagrams and Parts
2-4 Maintenance
3. Press the control head onto the radio chassis until the protruding tabs on the chassis snap into
the recesses inside the control housing, see Figure 2-5.
Figure 2-5 Control Head Replacement.
4.0 Exploded View Diagrams and Parts
Figure 2-6 Radio Exploded View Diagram.
Recess
Cover Chassis 1502609Y01
incl. Gasket Chassis
3202619Y01
Main
PCB
Flex
8402618Y01
Pad
7502618Y01
Gasket
Controlhead
3202620Y01
Antenna Conn.
0905901V02
incl. Gasket
3205929V01 Chassis
2702608Y02
Shield
2602640Y02
Shield
2602639Y01
Accessory Conn. 16Pin
2804503J01
Power Conn. 0905902V04
Gasket 3205930V01
Clip 4205938V01
Connector 1580922V01
Gasket Accessory Conn.
3202606Y01
Gasket Cover
3202607Y01
Screw M3x10
0310911A12
Controlhead K6
Exploded View Diagrams and Parts
Maintenance 2-5
Figure 2-7 Control Head for Display/Keypad Radio Model.
Gasket
3286006B01
PCB
8486015B04
Keypad
7586002B01
LCD Module
7286003B01
LCD Gasket
3286005B01
Housing, back
1586001B01
Housing, front
Control head
1586000B01
LCD Frame
0786004B01
Service Aids
2-6 Maintenance
5.0 Service Aids
The list in table 2-1 includes service aids recommended for working on the GM1200E radio.
Table 2-1 Service Aids.
PART No. DESCRIPTION APPLICATION
GTF376 Test Box Cable Connects radio to GTF180 test box.
GTF374 Combined Interface
Cable Connects radio to RLN4008 RIB.
GTF377 Combined Interface
Cable Connects Databox radio to RLN4008 RIB.
GPN6133 Power Supply Used to supply power to the radio.
GKN6266 DC Power Cable for radio Interconnects radio to power supply.
GTF180 Test Box Enables connection to the universal connector. Allows
switching for radio testing.
RLN4008 Radio Interface Box Enables communications between the radio and the
computer’s serial communications adapter.
EPN4040 Power Supply Used to supply power to the RIB (240 VAC).
EPN4041 Power Supply Used to supply power to the RIB (220 VAC).
3080369B72 Computer Interface Cable Connects the computer’s serial communications adapter
(9 pin) to the RIB.
3080369B71 Computer Interface Cable Connects the computer’s serial communications adapter
(25 pin) to the RIB.
ENVN4001 MPT1327 1200E Series DPS Dealer Software, 3.5” floppy disks.
ENVN4002 MPT1327 1200E Series DPS Network Software, 3.5” floppy disks.
Test Equipment
Maintenance 2-7
6.0 Test Equipment
The list in table 2-2 includes all standard test equipment required for servicing two-way mobile
radios, as well as several unique items designed specifically for servicing the GM1200E radio.
Battery-operated test equipment is recommended when available. The “Characteristics” column is
included so that equivalent equipment may be substituted; however, when no information is provided
in this column, the specific Motorola model listed is either a unique item or no substitution is
recommended.
Table 2-2 Recommended Test Equipment.
* Any of the R2000 Series system analysers will substitute for items with an asterisk (*)
MODEL No. DESCRIPTION CHARACTERISTICS APPLICATION
R2000 Series System Analyser This monitor will
substitute for items with
an asterisk (*)
Frequency/deviation meter
and signal generator for wide-
range troubleshooting and
alignment.
*R1150C Code Synthesizer Injection of audio and digital
signalling codes
*S1053D
*HM-203-7
*SKN6008A
*SKN6001A
220 VAC Voltmeter
110 VAC Voltmeter
Power Cable for Meter
Test Leads for Meter
1mV to 300V, 10MΩ
Input impedance Audio voltage measurements
*S1350C
*ST1213B (VHF)
*ST1223B (UHF)
Watt Meter
Plug-in Element
RF Dummy Load
50 ohm, ±5% accuracy
10 Watts, maximum
0-1000 MHz, 300W
Transmitter power o/p
measurements
R1065A Load Resistor 10-watt Broadband For use with Wattmeter
S1339A RF Millivolt Meter
10kHz to 1.2 GHz 100µV to 3V RF RF level measurements
*R1013A SINAD Meter Receiver sensitivity
measurements
S1347D or
S1348D
(programmable)
DC Power Supply 0-20Vdc, 0-5 Amps Bench supply for 13.2Vdc
current limited
Test Equipment
2-8 Maintenance
Accessories 3-i
Chapter 3
Accessories
Table of Contents
Table of Contents
Paragraph Page
1.0 GM1200E Accessory Connector Plan...................................................... 1
2.0 GM1200E Accessory Diagrams................................................................ 2
2.1 Speaker GSN6059 5.5ins/130mm, 13 Watts............................................... 2
2.2 Handset HMN9416 (P/O HMN3141)
Mechanical Exploded View.......................................................................... 3
2.3 Enhanced Compact Microphone GMN6146
Mechanical Exploded View.......................................................................... 5
2.4 DTMF Microphone GMN6148
Mechanical Exploded View.......................................................................... 7
2.5 Base Tray GLN7318/GLN7326.................................................................. 11
2.6 Remote Mount Front / Rear Housing Kits GLN7331 / GLN7332
Mechanical Exploded View........................................................................ 12
2.7 Power Supply GPN6133 (EMC/CE Approved).......................................... 13
2.8 Power Supply HPN8393 (Not EMC Approved).......................................... 14
3.0 List of Accessories.................................................................................. 16
Table of Contents
3-ii Accessories
GM1200E Accessory Connector Plan
Accessories 3-1
1.0 GM1200E Accessory Connector 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.
4
86
85 +12V
+12V
4
86
85
Alternative
Alternative
Alarm
Relay
Alarm
Relay
87
87
30
30
+12V
+12V
CAUTION: 1. DO NOT short pin 1 or 16 on the accessory connector to ground, this may
damage the radio.
CAUTION: Ensure correct position of the accessory connector.
GM1200E Accessory Diagrams
3-2 Accessories
2.0 GM1200E Accessory Diagrams
2.1 Speaker GSN6059 5.5ins/130mm, 13 Watts
1
+ 16 connected
130.0
55.0
130.0
80.0
30.0
135.0
Cable
Length
2540 mm
100.0
GM1200E Accessory Diagrams
Accessories 3-3
2.2 Handset HMN9416 (P/O HMN3141)
Mechanical Exploded View
Ref Motorola
No. Part No. Description
1 13-80928W01 Escutcheon
2 15-82281R01 Top Housing
3 75-80927W01 Top Housing Pad
4 30-06418T01 Coil Cord Cable
5 Mic Cartridge (MK101)
6 07-80148G02 Mic Gasket Bracket
7 15-84795P04 Bottom Housing
8 03-10908A91 Machine Screw
9 03-10913B37 Tapping Screw
10 PTT Dome Switch (S11)
Ref Motorola
No. Part No. Description
11 38-84658P01 PTT Button
12 Speaker (LS10)
13 32-80272F16 Microphone Gasket
14 Not used
15 03-10944A03 Tapping Screw
16 43-84312N01 Reed Switch Spacer
17 01-80701Y77 Circuit Board Assembly
18 75-80926W01 Circuit Board Pad
19 32-80282F02 Lens Gasket
20 61-80266F10 Display Lens
Mechanical Parts List
GM1200E Accessory Diagrams
3-4 Accessories
2.2.1 Description
The HMN3141 Handset and hang-up cup is a slimline telephone handset with push to talk (PTT)
button. It is used in place of, and operates similar to, the standard mobile microphone.
2.2.2 Installation
General
When planning the installation of your handset, it is important that it does not interfere with the
operation of the vehicle or its accessories, nor disturb passenger seating or leg space. The handset
must be within convenient reach to the user. In general terms, the location of the handset should be
similar to the standard mobile microphone.
Adjustable Angle Bracket
1. Verify that the selected mounting surface is strong enough to support the mounting hardware.
2. Use the base of the adjustable angle bracket as a template, then centre punch and drill four
3.4mm diameter holes. Be careful not to damage any wires or other vital vehicle components
when drilling the holes.
3. Use the four M4x20mm tapping screws and the internal star lockwashers to mount and
secure the bracket.
4. Place the hang-up cup on top of the mounting surface of the mounting bracket and secure it
using the four M3.5x0.6x20mm machine screws, lockwashers, and hex nuts provided.
5. Select the angle between the two bases of the adjustable angle bracket (from 0 to 110
degrees) and tighten the two adjusting screws.
GM1200E Accessory Diagrams
Accessories 3-5
2.3 Enhanced Compact Microphone GMN6146
Mechanical Exploded View
1
2
3
4
5
6
7
Ref Motorola
No. Part No. Description
1 0180704Y99 Rear Housing assembly
2 0311994A23 Screw (3 used)
3 5480104R12 Model Label (GMN6146C)
5480104R02 Model Label (GMN6146B)
4 1580566B02 Front Housing
Hang-Up Clip Parts List
Ref Motorola
No. Part No. Description
9 03-00139913 Screw, 8-18x1/2 (3 used)
10 01-80743T91 Hang-up clip
Ref Motorola
No. Part No. Description
5 3880568B01 PTT Button
7580983Z03 Rubber Spacer
4180150R01 Spring Tension
6 3280565B01 Gasket MIC
7 3002593Y02 Coiled Cord
Mechanical Parts List
GM1200E Accessory Diagrams
3-6 Accessories
Schematic Diagram
Electrical Parts Lists
Circuit
Ref Motorola
Part No. Description
R1300 1805500L04 RES VAR 2.2k (not
used)
R1301 0660076A57 RES CHIP 2.2k 5 1/8
R1302 0660076A43 RES CHIP 560 5 1/8
R1303 0660076A65 RES CHIP 4.7k 5 1/8
R1304 0660076A43 RES CHIP 560 5 1/8
R1305 0660076B05 RES CHIP 150k 5 1/8
R1306 0660076B13 RES CHIP 330k 5 1/8
R1307 0660076A75 RES CHIP 12k 5 1/8
R1308 0660076A47 RES CHIP 820 5 1/8
R1309 0660076A51 RES CHIP 1.2k 5 1/8
R1310 0660076A51 RES CHIP 1.2k 5 1/8
C1301 2113740A38 CAP CHIP CL1 24p
C1302 2113741A21 CAP CHIP CL2 X7R 1n
C1303 2113741A61 CAP CHIP CL2 X7R
47n
C1304 2113741A51 CAP CHIP CL2 X7R
18n
C1305 2113741A21 CAP CHIP CL2 X7R 1n
Circuit
Ref Motorola
Part No. Description
C1306 2113741A21 CAP CHIP CL2 X7R 1n
C1307 2113741A21 CAP CHIP CL2 X7R 1n
C1308 2311049J26 CAP TANT CHIP 10uF
16V
C1309 2311049J26 CAP TANT CHIP 10uF
16V
C1310 2113741A21 CAP CHIP CL2 X7R 1n
C1311 2113743F12 CER CHIP CAP 330n
C1314 2113741A21 CAP CHIP CL2 X7R 1n
C1315 2113741A21 CAP CHIP CL2 X7R 1n
C1316 2113741A21 CAP CHIP CL2 X7R 1n
Q1301 4813824A10 XSTR NPN 40V .2A
Q1302 4813824A10 XSTR NPN 40V .2A
D1301 4880140L15 DIODE SOT ZENER
10V
D1302 4880140L07 DIODE SOT ZENER
5.6V
4080164S01 SWITCH,PTT
5080258E04 ELECTRET MIC CTRG
8402571Y01 PCB RENA MIC BLK
GM1200E Accessory Diagrams
Accessories 3-7
2.4 DTMF Microphone GMN6148
Mechanical Exploded View
2
13
456
7 8 9
0
#
abc def
ghi j kl mno
prs tuv wxy
opr
Ref Motorola
No. Part No. Description
1 15-80652D02 Microphone front housing
2 32-80565B01 Microphone gasket
3 75-80983Z03 Rubber Spacer, Switch
4 38-80654D01 Button, push to talk
5 41-80658D01 Spring, PTT
6 35-80089D02 Felt baffle
7 75-80655D01 Keypad
8 01-80707Y77 DTMF Encoder board assy
9 42-80656D01 Spacer
10 01-80707Y78 Switch/Sidetone board assy
11 01C80669D01 Microphone rear Housing
12 54-80104R10 Mic label
13 03-139959 Screw, thread forming
Mechanical Parts List
GM1200E Accessory Diagrams
3-8 Accessories
Schematic Diagram
GM1200E Accessory Diagrams
Accessories 3-9
PCB Layout
C1301
C18
R40
C14
R23
C1302
C1305 C1306
C1304
R1302
R1303
R1305 Q1302 R1306 C1307
C1308
C1313
R1310
C1312
R1309
U4
R1308
Q1304
CR1
R32
C17
R33
C24
Q6
C26
C23
VR5
C15
Y1
R7
U1 U2
R9
R16
R13
C6
C7
R14
C8
U5
R19
R15
C3 R6 C5
R5
R3 C1
R4
C20
R10
R1
C19 R2 R22
C9
R17
R18
C10
R21
R24
C13
C2
C11
C12
VR1301
C1314
C1311
VR1302
R1307
C1309
C1310
Q1303
Q1
R11
R44
R43
C16
C29 R42 R12
CR1301 Q2
U3 R20
SHOWN FROM COMPONENT SIDE
8402685Y01 GEPD 5469
SW1 SW2 SW3
SW4 SW5 SW6
SW7 SW8 SW9
SW SW0 SW
DS12 DS13
DS10DS11
SHOWN FROM SOLDER SIDE
8402685Y01 GEPD 5470
GM1200E Accessory Diagrams
3-10 Accessories
Electrical Parts List
Circuit
Ref Motorola
Part No. Description
C1 23-11049A07 1uF; 16V, 10%, TANT
C2 21-13740A73 560pF
C3 23-11049A59 10uF; 6V,10%, TANT
C5 21-13740A59 150pF
C6 21-13741A45 0.01uF
C7 21-13741A45 0.01uF
C8 21-13741A45 0.01uF
C9 21-13740A59 150pF
C10 21-60521G37 0.1uF
C11 23-11049A07 1uF; TANT
C13 21-13740A59 150pF
C14 21-60521G37 0.1uF
C15 21-13740A40 30pF
C16 21-13740A40 30pF
C17 23-11049A07 1uF; TANT
C18 21-13741A45 0.01uF
C19 21-13740A59 150pF
C20 21-13741A45 0.01uF
C23 23-11049A30 33uF, 6V, 10%, TANT
C24 21-13740A79 1000pF
C26 21-13740A79 1000pF
C29 23-11049A07 1uF; TANT
C1301 21-13740A39 27pF, 50V, NPO.
C1302 21-13740A79 1000pF
C1304 23-11049A59 10uF; 6V, 10%, TANT
C1305 21-13743B23 0.330uF
C1306 21-13740A59 150pF
C1307 21-13740A79 1000pF
C1308 21-11032B14 0.15uF
C1309 21-13740A59 150pF
C1310 21-13740A59 150pF
C1311 21-13740A59 150pF
C1312 21-13740A59 150pF
C1313 21-13740A59 150pF
C1314 21-13741A45 0.01µF
CR1 48-84336R03 MMBD 7000
CR10 48-83636N18 LED; GREEN, SMD
CR11 48-83636N18 LED; GREEN, SMD
CR12 48-83636N18 LED; GREEN, SMD
CR13 48-83636N18 LED; GREEN, SMD
CR1301 48-13833C04 BAV70LT1
Q1 4880214G02 MMBT 3904
Q2 4880214G02 MMBT 3904
Q6 4880214G02 MMBT 3904
Q1302 48-80214G02 MMBT 3904
Q1303 48-05128M19 MMBTA 13
Q1304 48-05128M16 MMBT 3906
R1 06-60076B01 100K
R2 06-60076B03 120K
R3 06-60076A87 39K
R4 06-60076A87 39K
R5 06-60076A73 10K
R6 06-60076B05 150K
R7 06-60076B25 1Meg
R9 06-60076B01 100K
R10 06-60076A73 10K
R11 06-60076B01 100K
R12 06-60076A89 47K
R13 06-60076A47 820
R14 06-60076A47 820
R15 06-60076A93 68K
R16 06-60076A73 10K
R17 06-60076A87 39K
R18 06-60076A89 47K
R19 06-60076A73 10K
R20 06-60076A73 10K
R21 06-60076B01 100K
R22 06-60076A89 47K
R23 06-60076A65 4.7K
R24 06-60076A87 39K
R32 18-60502A13 10K VAR; SMD
R33 06-60076A63 3.9K
R40 06-60076A65 4.7K
R42 06-60076A84 30K
R43 06-60076A84 30K
R44 06-60076A25 100
Circuit
Ref Motorola
Part No. Description
GMN6148_
GM1200E Accessory Diagrams
Accessories 3-11
2.5 Base Tray GLN7318/GLN7326
Circuit
Ref Motorola
Part No. Description
R1302 06-60076A57 2.2K; 5%, 1/8W
R1303 06-60076A49 1K; 5%, 1/8W
R1305 06-60076B05 150K; 5%, 1/8W
R1306 06-60076M01 0; RES. JUMPER
R1307 06-60076B01 100K; 5%, 1/8W
R1308 06-60076A81 22K; 5%, 1/8W
R1309 06-60076B01 100K; 5%, 1/8W
R1310 06-60076B01 100K; 5%, 1/8W
SW1301 40-80164S01 SWITCH, PTT
U1 51-80662D01 MK53731D DTMF
DIALER I.C.
U2 51-13819A02 LM2902D OPAMP
U3 to
U5 51-80159R01 DUAL TRANSISTOR;
IMX1
VR5 48-80140L05 4.7V; 5%, ZENER
VR1301 48-80140L17 12V; 5%, ZENER
VR1302 48-80140L17 12V; 5%, ZENER
Y1 48-80915W02 3.58 MHZ Resonator
Y2 50-80121L01 Transducer
50-13920A04 ADHESIVE, MIC
SHIELD, DTMF
ENCODER
30-02593Y02 COIL CORD W. IP54
BOOT
84-02685Y01 Circuit Board
EURO DTMF MIC
84-80661D01 Circuit Board,
Switch/sidetone
Circuit
Ref Motorola
Part No. Description
GMN6148_ continued,
Ref Motorola
No. Part No. Description
1 1580155J02 Base housing
2 7510606A06 Bumper RBR black
3 0384725C09 Screw 4.2x16
4 4205722C02 Clamp fastener
5 1580154J02 Cover base housing
6 7510606A13 Bumper black
5080085D03 Speaker (GLN7326)
Not shown
Mechanical Parts List
GM1200E Accessory Diagrams
3-12 Accessories
2.6 Remote Mount Front / Rear Housing Kits GLN7331 / GLN7332
Mechanical Exploded View
Remote
mount
radio
Remote cable
Remote Controlhead
back housing
Front housing PCB
Gasket for
Remote cable s
o
Flex connector
Flex connector
interface
Gasket
Remote mount
Radio front housing
Pad
Remote Front Housing
External sp
e
connector
GLN7333
HKN6097 3m (3005825X02)
HKN6098 5m (3005825X01)
HKN6099 7m (3005825X03)
3205789W01
1586010B01
7586011B01
0902636Y01
8402680Y02
1586012B01
3205789W01
GLN7331_
Remote Controlhead
back housing
Controlhead Gasket
Controlhead
Gasket for
Remote cable socket
Remote mount
Bracket
Flex connector
Flex connector
interface
PCB
Controlhead
Remote Back Housing
External speaker
connector
5X02)
5X01)
5X03)
0902636Y01
8402680Y02
1586012B01
3205789W01
3202620Y01
0702457Y02
GLN7332_
GM1200E Accessory Diagrams
Accessories 3-13
2.7 Power Supply GPN6133 (EMC/CE Approved)
GM1200E Accessory Diagrams
3-14 Accessories
2.8 Power Supply HPN8393 (Not EMC Approved)
Electrical Characteristics
Input Voltages: 105-125VAC; 210-250VAC, 47-63Hz
Output Voltage: 13.8VDC ±0.1 volts
(internally adjustable 11-15VDC)
Ripple: less than 5mV peak to peak
(full load and low line)
Provides 8 amps continuous duty and 14 amps intermittent duty over an ambient temperature range
of -30 to +60°C .
(4 Pos) Positions 1 and 2 are positive power output terminals and positions 3 and 4 are for negative power out-
put terminals for 14 amp max. current.
(6 Pos) Position 1 is negative power output terminal for 3 amp max current. Positions 2,3,6 are empty. Position
4 is positive 13.8VDC power output terminal. Position 5 is positive trickle charge output terminal.
GM1200E Accessory Diagrams
Accessories 3-15
Schematic Diagram
List of Accessories
3-16 Accessories
3.0 List of Accessories
Mechanical Hardware Kits:
GLN7324 Low Profile Trunnion Kit (Standard)
GLN7317 High Profile Trunnion Kit
GLN7320 In-Dash Mount, DIN install. Kit
GLN7325 IP54 seal, accessory connector
HLN9457 Accessory Connector Facility Kit
Microphones:
GMN6146 Enhanced Compact Microphone (Standard)
GMN6148 DTMF Microphone
HMN3141 Handset with Hang-up cup
HMN3000 Desk Microphone
Speakers:
Speaker connecting cables are provided with a 16-pin accessory connector plug.
GSN6059 13 W External Speaker, square
Cables:
GKN6270 Battery power cable 3m, 10A fuse (Standard)
GKN6271 Ignition switch cable
ENKN4000 MAP27 Interface Cable
Other
GKN6272 Alarm, Relay and Cable Kit
GLN7323 External PTT
GLN7326 Base Tray (with internal speaker)
GPN6126 24/12V DC Converter, 6A
GPN6127 24/12V DC Converter, 15A
GPN6133 EMC approved Power Supply
HPN4002 Non-EMC approved Power Supply
HPN8393 Non-EMC approved Power Supply
Radio Tuning Procedure 4-i
Chapter 4
Radio Tuning Procedure
Table of Contents
Table of Contents
Paragraph Page
1.0 GM1200E Tuning Procedure...................................................................... 1
1.1 General........................................................................................................ 1
1.2 PA Bias Voltage........................................................................................... 2
1.3 Battery Threshold ........................................................................................ 3
1.4 Transmitter Power ....................................................................................... 3
1.5 Reference Oscillator .................................................................................... 4
1.6 Front-End Pre-Selector................................................................................ 4
1.7 Rated Volume.............................................................................................. 5
1.8 Squelch........................................................................................................ 6
1.9 Transmit Voltage Limit................................................................................. 6
1.10 Transmit Deviation Balance (Compensation) .............................................. 6
1.11 Transmit Deviation Limit .............................................................................. 7
1.12 Signalling Alignments .................................................................................. 7
Table of Contents
4-ii Radio Tuning Procedure
GM1200E Tuning Procedure
Radio Tuning Procedure 4-1
1.0 GM1200E Tuning Procedure
1.1 General
The recommended hardware platform is a 386 or 486 DX 33 PC (personal computer) with 8 Mbytes
RAM, MS DOS 5.0™, Windows 3.1™, and DPS (Dealer Programming Software). These are
required to align the radio. Refer to your DPS Installation Manual for installation and setup
procedures for the required software; the user manual is accessed (and can be printed if required)
via the DPS.
To perform the alignment procedures, the radio must be connected to the PC, RIB (Radio Interface
Box), and Universal Test Set as shown in figure 4-1.
Figure 4-1 Radio Alignment Test Setup
All tuning procedures are performed from the Service menu.
Before going into the Service menu, the radio must first be read using the File / Read Radio menu (if
the radio has just been programmed with data loaded from disk or from a newly created codeplug,
then it must still be read so that the DPS will have the radio’s actual tuning values).
All Service windows read and program the radio codeplug directly; you do NOT have to use the DPS
Read Radio / Write Radio functions to program new tuning values.
BNC
RIB
RLN-4008B
RIB POWER SUPPLY
EPN4041 (230 VAC. Euro)/
EPN4040 (230 VAC. UK)
COMPUTER INTERFACE CABLE
30-80369B72 (IBM "AT" 9PIN ONLY)
30-80369B71 (IBM "XT" 25PIN ONLY)
DATA
GND
COMPUTER
AUDIO GENERATOR
SINAD METER
AC VOLTMETER
TX
RX
30 dB PAD
30 dB PAD
RF GENERATOR
SERVICE MONITOR
OR COUNTER
WATTMETER
TRANSMIT
RECEIVE
TEST SET
RTX4005/
GTF180
RADIO
PROGRAM/TEST CABLE
GTF377 (Databox Radios only)
or GTF374
AUDIO IN
SMA-BNC
58-80348B33
TEST CABLE
GTF-376
15PIN25PIN
Note: Battery can be used in RIB
making power supply optional
MIC IN
CAUTION: DO NOT switch radios in the middle of any Service procedure. Always use the
Program or Cancel key to close the tuning window before disconnecting the radio.
Improper exits from the Service window may leave the radio in an improperly
configured state and result in seriously degraded radio or system performance.
GM1200E Tuning Procedure
4-2 Radio Tuning Procedure
The Service windows introduce the concept of the “Softpot”, an analog SOFTware controlled
POTentiometer used for adjusting all transceiver alignment controls. A softpot can be selected by
clicking with the mouse at the value or the slider or by hitting the TAB key until the value or the slider
is highlighted.
Each Service window provides the capability to increase or decrease the ‘softpot’ value with the
mouse, the arrow keys or by entering a value with the keyboard. The window displays the minimum,
maximum, and step value of the softpot. In addition transmitter tuning windows indicate the
transmitter frequency and whether the radio is keyed.
Adjusting the softpot value sends information to the radio to increase (or decrease) a DC voltage in
the corresponding circuit. For example, increasing the value in the Reference Oscillator tune window
instructs the radio microprocessor to increases the voltage across a varactor in the reference
oscillator to increase the frequency. Pressing the Program button stores all the softpot values of the
current window permanently in the radio.
In ALL cases, the softpot value is just a relative number corresponding to a D/A (Digital-to-Analog)
generated voltage in the radio. All standard measurement procedures and test equipment are
similar to previous radios.
Refer to the DPS on-line help for information on the tuning software.
Perform the following procedures in the sequence indicated.
Note: All tuning procedures must be performed at a supply voltage of 13.2V unless otherwise
stated.
The Modulation Analyzer to measure the deviation should be set to frequency modulation
with de-emphasis switched off and all high pass filters switched off.
1.2 PA Bias Voltage
Adjustment of the PA Bias is critical for proper radio operation. Improper adjustment will result in
poor operation and may damage the PA FET device. For this reason, the PA bias must be set before
the transmitter is keyed the first time.
Note: For certain radio models there are two bias voltage settings. For these radios both ‘ Bias 1
Voltage ’ and ‘ Bias 2 Voltage ‘ need to be adjusted when aligning the PA Bias. For models
that only have one bias voltage setting, the ‘ Bias 2 Voltage ‘ will be shown in grey on the
service menu.
1. From the Service menu, select Transmitter Alignment.
2. Select Bias Voltage Tuning to open the bias voltage tuning window. If the control voltage is out
of range, an error message will be displayed. In this case the radio hardware has a problem
and tuning must be stopped immediately.
3. Click the button labelled “0” to set the quiescent current temporarily to 0 mA
4. Measure the DC current of the radio. Note the measured value and add the specified quiescent
current shown in table 4-1. The result is the tuning target.
5. Adjust the current per the target calculated in step 4.
6. Click the Program button to store the softpot value.
GM1200E Tuning Procedure
Radio Tuning Procedure 4-3
1.3 Battery Threshold
The radio uses 2 battery threshold levels Tx High and Tx Low to determine the battery condition.
The Program buttons must only be activated when the power supply is set to the indicated voltage. If
the DPS detects that the voltage is not within the expected range for the threshold in question then a
message will be displayed to warn that the radio may not be set up correctly for the alignment
operation.
1. From the Service menu, select Transmitter Alignment.
2. Select Battery Threshold to open the battery threshold tuning window. The current softpot
values are displayed for information only and cannot be edited.
3. Set the supply voltage to the value indicated for TX High.
4. Click the TX High Program button to store the softpot value for TX High.
5. Set the supply voltage to the value indicated for TX Low.
6. Click the TX Low Program button to store the softpot value for TX Low.
7. Close the window by clicking Cancel.
1.4 Transmitter Power
The radio has two power level settings, a high power level setting, and a low power level setting.
IMPORTANT: To set the transmitter power for customer applications use the Common Radio
Parameters window under the Edit menu and set the “Low Power Level” and “High Power Level”
powers to the desired values. Only if the transmitter components have been changed or the
transmitter does not transmit with the power set in the Common Radio Parameters window the
following procedure should be performed.
The advanced power setting technology employed in the radio makes use of two reference power
level settings along with parameters describing the circuit behaviour. To determine these parameters
the DPS requires the power values measured for two different settings.
Table 4-1 Quiescent Current Alignment
RF-Band Target
UHF
VHF / 300-390MHz 440mA±10%
150mA±15%
CAUTION: Inadvertant use of the program buttons may result in radio failure.
CAUTION: When setting the Transmitter Power DO NOT EXCEED THE
RECOMMENDED POWER SET LIMITS of 25W.
GM1200E Tuning Procedure
4-4 Radio Tuning Procedure
1. From the Service menu, select Transmitter Alignment.
2. Select RF Power Tuning to open the RF power tuning window. The window will indicate the
transmit test frequencies to be used.
3. Select Point 1 value of the first frequency.
4. Click Toggle PTT to key the radio. The status bar will indicate that the radio is transmitting.
5. Measure the transmitter power on your power meter.
6. Enter the measured value in the box Point 1.
7. Select Point 2 value of the first frequency.
8. Measure the transmitter power on your power meter.
9. Enter the measured value in the box Point 2.
10. Click Toggle PTT to dekey the radio.
11. Repeat steps 3 - 10 for all test frequencies shown in the window.
12. Click Program to store the softpot values.
1.5 Reference Oscillator
Adjustment of the reference oscillator is critical for proper radio operation. Improper adjustment will
not only result in poor operation, but also a misaligned radio that will interfere with other users
operating on adjacent channels. For this reason, the reference oscillator should be checked every
time the radio is serviced. The frequency counter used for this procedure must have a stability of 0.1
ppm (or better).
1. From the Service menu, select Transmitter Alignment.
2. Select Reference Oscillator to open the reference oscillator tuning window. The tuning window
will indicate the target transmit frequency.
3. Click Toggle PTT to key the radio. The status bar will indicate that the radio is transmitting.
4. Measure the transmit frequency on your frequency counter.
5. Adjust the reference oscillator softpot in the tuning window to achieve a transmit frequency
within the limits shown in table 4-2.
6. Click Toggle PTT again to dekey the radio and then press Program to store the softpot value.
1.6 Front-End Pre-Selector
Alignment of the front-end pre-selector is normally not required on these radios. Only if the radio has
poor receiver sensitivity or the pre-selector parts has been replaced the following procedure should
be performed. The softpot value sets the control voltage of the pre-selector. Its value needs to be set
at 7 frequencies across the frequency range.
1. Set the test box (GTF180) meter selection switch to the "Audio PA" position and connect a
SINAD meter to the "METER" port.
2. From the Service menu, select Receiver Alignment.
3. Select Front End Filter to open the pre-selector tuning window. The window will indicate the
receive test frequencies to be used.
Table 4-2 Reference Oscillator Alignment
RF-Band Target
All bands ±150 Hz
GM1200E Tuning Procedure
Radio Tuning Procedure 4-5
4. Select the first test frequency shown, and set the corresponding value to the start value shown
in table 4-4.
5. Set the RF test generator to the receive test frequency, and set the RF level to 10µV modulated
with a 1 kHz tone at the normal test deviation shown in table 4-3.
6. Measure the RSSI voltage at accessory connector pin 15 with a dc voltmeter capable of 1 mV
resolution.
7. Change the softpot value by the stepsize shown in table 4-4 and note the RSSI voltage.The
target softpot value is achieved when the measured RSSI voltage change between step 6 and
step 7 is lower than the tuning target for the first time. The tuning target, shown in table 4-4, is
expressed as the percentage of the measured RSSI voltage and must be recalculated for every
tuning step. If the measured RSSI voltage decreases before the target value has been
achieved, approximation should be stopped and the current softpot value should be used as
target value. Set test box (GTF180) audio switch to the “SPKR” position. The 1 kHz tone must
be audible at the target value to make sure the radio is receiving.
8. Repeat steps 4 - 7 for all test frequencies shown in the window.
9. Click the Program button to store the softpot values.
1.7 Rated Volume
The rated volume softpot sets the volume at normal test modulation.
1. Set test box (GTF180) meter selection switch to the “AUDIO PA” position and the speaker load
switch to the "MAXAR" position. Connect an AC voltmeter to the test box meter port.
2. From the Service menu, select Receiver Alignment.
3. Select Rated Volume to open the rated volume tuning window. The screen will indicate the
receive test frequency to be used.
4. Set the RF test generator to the receive test frequency, and set the RF level to 1mVolt
modulated with a 1 kHz tone at the normal test deviation shown in table 4-3. Set test box
(GTF180) audio switch to the “SPKR” position. The 1 kHz tone must be audible to make sure
the radio is receiving.
5. Adjust the value of the softpot to obtain rated audio volume (as close to 3.87 Vrms).
Note: The voltage at the meter port of the testbox GTF180 is only half the voltage at the speaker.
6. Click the Program button to store the softpot value.
Table 4-3 Normal Test Deviation.
Channel Spacing Deviation
12.5 kHz
20 kHz
25 kHz
1.5 kHz
2.4 kHz
3 kHz
Table 4-4 Start Value for Front-End Pre-selector Tuning.
RF-Band Target Stepsize Start Value
UHF
VHF
300-350MHz
336-390MHz
0.42%
0.5%
0.84%
0.31%
-2
+2
-2
-2
Maximum
Minimum
Maximum
Maximum
GM1200E Tuning Procedure
4-6 Radio Tuning Procedure
1.8 Squelch
The squelch softpots set the signal to noise ratio at which the squelch opens. The squelch value
needs to be set at 7 frequencies across the frequency range.
1. Set the test box (GTF180) meter selection switch to the "Audio PA" position and connect a
SINAD meter to the "METER" port.
2. From the Service menu, select Receiver Alignment.
3. Select Squelch Attenuation to open the squelch attenuation tuning window. The window will
indicate the receive test frequencies to be used.
4. Select the first test frequency shown, and set the corresponding value to 0.
5. Set the RF test generator to the test frequency and modulate the signal generator at the normal
test deviation shown in table 4-3, with 1 kHz tone. Adjust the generator for a 8-10 dB SINAD
level (weighted with psophometric filter).
6. Adjust the softpot value until the squelch just closes.
7. Monitor for squelch chatter; if chatter is present, repeat step 6.
8. When no chatter is detected, select the next softpot and repeat steps 4 - 7 for all test
frequencies shown in the window.
9. Click the Program button to store the softpot values.
1.9 Transmit Voltage Limit
The transmit control voltage limit softpot sets the maximum power control voltage. All 7 voltage limit
softpots are tuned and programmed automatically when the Program button is clicked.
1. From the Service menu, select Transmitter Alignment.
2. Select Voltage Limit to open the voltage limit tuning window.
3. Set the Power Factor to 1.3.
4. Click the Program button to store the softpot values.
1.10 Transmit Deviation Balance (Compensation)
Compensation alignment balances the modulation sensitivity of the VCO and reference modulation
(synthesiser low frequency port) lines. Compensation algorithm is critical to the operation of
signalling schemes that have very low frequency components (e.g. DPL) and could result in
distorted waveforms if improperly adjusted. The compensation value needs to be set at 7
frequencies across the frequency range.
1. From the Service menu, select Transmitter Alignment.
2. Select Modulation Attenuation to open the deviation balance tuning window. The window will
indicate the transmit test frequencies to be used.
3. Set the Test Box (GTF180) meter selector switch to the “GEN” position, and inject a 80 Hz tone
at 200 mVrms into the "Audio In" port. (The deviation measured at step 6 should be about
1-4kHz.) Connect an AC meter to the meter port to insure the proper input signal level.
4. Select the first test frequency shown in the window.
5. Click Toggle PTT to key the radio. The status bar will indicate that the radio is transmitting.
6. Measure the transmitter deviation.
GM1200E Tuning Procedure
Radio Tuning Procedure 4-7
7. Change the input tone to 3 kHz, 200 mVrms.
8. Adjust the deviation to within ±2% of the value recorded in step 6.
9. Check the deviation at 80 Hz again and repeat step 7-8, if it has changed since step 6.
10. Click the Toggle PTT to dekey the radio.
11. Repeat steps 3 - 10 for the remaining test frequencies.
12. Click the Program button to store the softpot values.
Note: The step size change for step 8 is approximately 2.5% softpot value.
1.11 Transmit Deviation Limit
The transmit deviation limit softpot sets the maximum deviation of the carrier. The deviation value
needs to be set at 7 frequencies across the frequency range.
1. From the Service menu, select Transmitter Alignment.
2. Select Reference Attenuation to open the reference attenuation tuning window.
3. Set the maximum value and press Program to store the softpot value.
4. From the Service menu, select Transmitter Alignment.
5. Select VCO Attenuation to open the deviation limit tuning window. The window will indicate the
transmit test frequencies to be used.
6. Set the Test Box (GTF180) meter selector switch to the “GEN” position, and inject a 1 kHz tone
at 800 mVrms into the "Audio In" port. Connect an AC meter to the meter port to ensure the
proper input signal level.
7. Select the first test frequency shown in the window.
8. Click the Toggle PTT to key the radio. The status bar will indicate that the radio is transmitting.
9. Adjust the transmitter deviation to the value shown in table 4-5.
10. Click the Toggle PTT to dekey the radio.
11. Repeat steps 8 - 10 for the remaining test frequencies.
12. Click the Program button to store the softpot values.
1.12 Signalling Alignments
1.12.1 MPT RSSI Threshold Level
The Program buttons must only be activated when the required signal is input to the radio and the
radio is receiving. If the DPS detects that the input signal is not within the expected range for the
RSSI level in question then a message will be displayed to warn that the radio may not be set up
correctly for the alignment operation.
Table 4-5 Transmitter Deviation
Channel Spacing Deviation
12.5 kHz 2.2-2.3 kHz
20 kHz 3.4-3.6 kHz
25 kHz 4.3-4.6 kHz
GM1200E Tuning Procedure
4-8 Radio Tuning Procedure
1. Set test box (GTF180) meter selection switch to the “AUDIO PA” position and the speaker load
switch to the "MAXAR" position.
2. From the Service menu, select Receiver Alignment.
3. Select RSSI to open the RSSI tuning window. The screen will indicate the receive test
frequency to be used.
The softpot values are displayed for information only and cannot be edited.
4. Set the RF test generator to the receive test frequency, and set the RF level to the value
indicated for RSSI Level 0, modulated with a 1 kHz tone at the normal test deviation shown in
table 4-3. Set test box (GTF180) audio switch to the “SPKR” position. The 1 kHz tone must be
audible to make sure the radio is receiving.
5. Click the Program button to store the softpot value for RSSI Level 0.
6. Repeat steps 4 - 5 for the remaining RSSI levels.
7. Click the Cancel button to close the window.
1.12.2 MPT1327 Transmit Deviation / DTMF Transmit Deviation
The MPT1327 Deviation Softpot is used to tune the FFSK signalling deviation. Tuning is performed
at one frequency. The radio generates an alternating bit pattern for tuning. Values for other
frequencies are calculated by the radio software.
The DTMF Deviation Softpot is used to tune the DTMF signalling deviation. Tuning is performed at
one frequency. The radio generates a DTMF signal for tuning. Values for other frequencies are
calculated by the radio software.
1. From the Service menu, select Transmitter Alignment.
2. Select Signalling Deviation to open the signalling deviation tuning window.
3. Select the MPT value and click the Toggle PTT to key the radio. The status bar will indicate that
the radio is transmitting.
4. Adjust the transmitter deviation to the value shown in table 4-6.
5. Click the Toggle PTT to dekey the radio.
6. Repeat steps 3 - 5 for DTMF deviation.
7. Click the Program button to store the softpot value.
Table 4-6 Signalling Deviation
Channel Spacing MPT 1327 Deviation
12.5 kHz 1.4-1.6 kHz 1.5-1.8 kHz
20 kHz 2.2-2.6 kHz 2.4-2.8 kHz
25 kHz 2.8-3.2 kHz 3.0-3.4 kHz
CAUTION: Inadvertant use of the program buttons may result in radio failure.
PL (CTCSS) Codes A-i
Appendix A
Table of Contents
Table of Contents
PL/DPL Codes
Paragraph Page
1.0 PL Codes and Digital PL (DPL) Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 PL Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Digital PL (DPL) Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table of Contents
A-ii PL (CTCSS) Codes
PL Codes and Digital PL (DPL) Codes
PL (CTCSS) Codes A-1
1.0 PL Codes and Digital PL (DPL) Codes
The following have been tested and are acceptable for programming into any transmit or receive
frequency.
1.1 PL Codes
1.2 Digital PL (DPL) Codes:
GROUP A GROUP B GROUP C
Code Freq Code Freq Code Freq
XZ
XB
YB
1Z
1B
2A
3Z
3B
4A
5Z
6A
7Z
M1
M3
67.0
77.0
88.5
100.0
107.2
114.8
123.0
131.8
141.3
151.4
173.8
186.2
203.5
218.1
XA
YZ
ZA
1A
2Z
2B
3A
4Z
4B
5A
6Z
6B
7A
M2
71.9
82.5
94.8
103.5
110.0
118.8
127.3
136.5
146.2
156.7
167.9
179.9
192.8
210.7
WZ
WA
WB
YA
ZZ
ZB
5B
8Z
69.3
74.4
79.7
85.4
91.5
97.4
162.2
206.5
023
043
071
116
143
165
225
251
266
325
356
413
452
466
532
627
703
743
025
047
072
122
145
172
226
252
271
331
364
423
454
503
546
631
712
754
026
051
073
125
152
174
243
255
274
332
365
431
455
506
565
632
723
031
053
074
131
155
205
244
261
306
343
371
432
462
516
606
654
731
032
054
114
132
156
212
245
263
311
346
411
445
464
523
612
662
732
036
065
115
134
162
223
246
265
315
351
412
446
465
526
624
664
734
PL Codes and Digital PL (DPL) Codes
A-2 PL (CTCSS) Codes
NPD Application Notes B-i
Appendix B
NPD Application Notes
Table of Contents
Table of Contents
Paragraph Page
1.0 Non Prescribed Data (NPD) Calls............................................................. 1
2.0 Calls with DTE connected to External Data Connector
(Radio Accessory Connector) .................................................................. 1
2.1 DTE Initiated Call (Outgoing Calls).............................................................. 1
2.2 Calls Initiated by another Radio Unit (Incoming Calls) ................................ 1
3.0 Calls with DTE connected to Internal Data Connector
(Radio Option Connector)......................................................................... 1
3.1 DTE Initiated Call (Outgoing Calls).............................................................. 1
3.2 Calls Initiated by another Radio Unit (Incoming Calls) ................................ 2
4.0 Other Calls.................................................................................................. 2
4.1 Voice Calls................................................................................................... 2
4.2 Status Calls.................................................................................................. 2
4.3 Mixed Calls .................................................................................................. 2
Table of Contents
B-ii NPD Application Notes
Non Prescribed Data (NPD) Calls
NPD Application Notes B-1
1.0 Non Prescribed Data (NPD) Calls
Non Prescribed Data calls utilising external Data Terminal Equipment (DTE) can be made using the
GM1200E Databox radio as the carrier.
Call protocol is by a combination of control line handshakes, the complexity of which depends on the
intelligence of the DTE.
2.0 Calls with DTE connected to External Data Connector
(Radio Accessory Connector)
2.1 DTE Initiated Call (Outgoing Calls)
■
■■Call set-up is initiated on ‘Call 1’ which should be programmed with an address including the
‘Non Prescribed Data’ (NPD) call modifier (*31*).
■
■■When the traffic channel data path is set up, the radio will enable the audio input and output
lines (with the microphone and loudspeaker lines disabled) and then signal that the DTE is
Clear to Send (CTS).
■
■■The DTE will send and receive audio signals using the PTT line as direction control.
■
■■Call clear can be from either DTE or radio.
DTE will remove the signal from ‘Call 1’ or signal on ‘Call Clear’.
Radio will remove the CTS line signal.
2.2 Calls Initiated by another Radio Unit (Incoming Calls)
■
■■Incoming calls will be indicated by a signal on the CTS.
■
■■The call will be “answered” by the DTE signalling on ‘Call 1’.
■
■■The call will continue and clear as described above in section 2.1
3.0 Calls with DTE connected to Internal Data Connector
(Radio Option Connector)
3.1 DTE Initiated Call (Outgoing Calls)
It is possible for the radio to call up to 3 different destinations (addresses) by using a combination of
Call 1 and Call 2 lines to signal one of three possibilities (Call N).
■
■■Call set-up is initiated on ‘Call N’ which should be programmed with an address including the
‘Non Prescribed Data’ (NPD) call modifier (*31*).
■
■■When the traffic channel data path is set up, the radio will enable the audio input and output
lines (with the microphone and loudspeaker lines disabled) and then signal that the DTE is
Clear to Send (CTS).
■
■■The DTE will send and receive audio signals using the PTT line as direction control.
■
■■Call clear can be from either DTE or radio.
DTE will remove the signal from ‘Call N’ or signal on ‘Call Clear’.
Radio will remove the CTS line signal.
Other Calls
B-2 NPD Application Notes
3.2 Calls Initiated by another Radio Unit (Incoming Calls)
■
■■Incoming calls will be indicated by a signal on the CTS.
■
■■The call will be “answered” by the DTE signalling on ‘Call 3’ (i.e.Call 1 and Call 2 lines both
enabled).
■
■■The call will continue and clear as described above in section 3.1
4.0 Other Calls
4.1 Voice Calls
It is possible to set up voice calls internally or externally using the procedures described above by
omitting the NPD call modifier from the called address. In this case the audio paths will be set up to
use the external microphone and loudspeaker with the volume pre-set. It is not possible to adjust the
volume from inside the radio.
4.2 Status Calls
It is possible to signal status calls internally or externally.
■
■■Status is sent by signalling on ‘Call N’ to a pre-set address using the Status call modifier.
■
■■The radio will send the pre-set status call to the pre-programmed address.
■
■■Call “success” will be signalled with a pulse on the CTS line.
4.3 Mixed Calls
Due to the ambiguity necessarily introduced by the very simple handshaking techniques employed,
users should only consider mixing Data/Voice/Status calls if they are confident that their DTE is
capable of correctly interpreting the handshakes under all conditions for all incoming and outgoing
call types likely to be encountered.

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