Simoco Wireless Solutions SRM9000UW, SRM9000TU service manual

SAI Global

SRM 9000 Series

FM VHF/UHF Mobile

Radio Transceiver

Revision 9 Hardware

SERVICE MANUAL

TNM-M-E-0002

ISSUE 1.0

May 2006

ISO9001 Lic.QEC20848

SRM9000 Series Mobile Radio Transceiver Rev 9 Hardware TNM-M-E-0002 ~ Iss 1.0

SRM9000 SERIES SERVICE MANUAL

TABLE OF CONTENTS

APPENDICES........................................................................................................................................ III

DECLARATION.....................................................................................................................................IV

COPYRIGHT .........................................................................................................................................IV

ERRORS AND OMISSIONS ..................................................................................................................IV

DOCUMENT HISTORY ..........................................................................................................................V

LIST OF ASSOCIATED PUBLICATIONS ..............................................................................................V

WARNINGS AND CAUTIONS............................................................................................................... VI

1. INTRODUCTION .......................................................................................................................... 1

1.1 GENERAL................................................................................................................................... 1

1.2 SCOPE ...................................................................................................................................... 1

1.3 DESCRIPTION ............................................................................................................................. 1

1.4 PRODUCT VARIANTS AND FACILITIES............................................................................................ 2

1.5 SOFTWARE VERSIONS AND NAMING ..............................................................................................5

1.5.1 Filename Structure........................................................................................................... 5

1.5.2 Application Code.............................................................................................................. 5

1.5.3 Software Type Code......................................................................................................... 5

1.5.4 Version Number............................................................................................................... 7

1.5.5 Exclusions........................................................................................................................ 7

1.5.6 Displaying Software Versions........................................................................................... 7

1.5.7 Automatic Version Upgrade Prompting............................................................................. 8

1.5.8 Transceiver SW Description, Start-up and Backup-Software............................................ 9

1.5.9 Wailing Siren (Boot-up Software Corrupted) ..................................................................... 9

1.6 ADJUSTMENT AND ALIGNMENT ..................................................................................................... 9

1.7 CHASSIS ASSEMBLY ................................................................................................................. 10

1.7.1 Torque Settings.............................................................................................................. 10

1.7.2 Thermal Compound Application ..................................................................................... 10

1.7.3 Assembly....................................................................................................................... 10

1.8 SPECIFICATION......................................................................................................................... 10

1.8.1 General.......................................................................................................................... 10

1.8.2 Transmitter..................................................................................................................... 12

1.8.3 Receiver ........................................................................................................................ 13

1.8.4 Signalling....................................................................................................................... 14

1.8.4.1 CTCSS............................................................................................................... 14

1.8.4.2 FFSK.................................................................................................................. 15

1.8.4.3 Selcall ................................................................................................................ 15

1.8.4.4 DTMF................................................................................................................. 17

1.8.4.5 DCS ................................................................................................................... 18

1.8.4.6 C4FM ................................................................................................................. 18

1.8.5 Environmental................................................................................................................ 19

2. SERVICE PHILOSOPHY............................................................................................................ 20

2.1 SERVICE CONCEPT ................................................................................................................... 20

2.2 WARRANTY.............................................................................................................................. 20

2.2.1 Service Within and Out Of Warranty.............................................................................. 20

2.2.2 Ancillary Items............................................................................................................... 20

2.3 SOFTWARE POLICY................................................................................................................... 20

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3. TECHNICAL DESCRIPTION...................................................................................................... 22

3.1 RECEIVER................................................................................................................................ 22

3.1.1 Front End Filters and RF Amplifier................................................................................. 22

3.1.2 First Mixer and IF Section.............................................................................................. 22

3.1.3 Quadrature Demodulator................................................................................................ 22

3.1.4 Receiver Audio Processing ............................................................................................ 24

3.2 TRANSMITTER .......................................................................................................................... 25

3.2.1 Drivers and PA Stages................................................................................................... 25

3.2.2 Power Control ................................................................................................................ 25

3.2.3 Antenna Changeover and Harmonic Filter...................................................................... 25

3.2.4 Transmitter Audio Processing......................................................................................... 25

3.3 FREQUENCY SYNTHESISER........................................................................................................ 26

3.3.1 General.......................................................................................................................... 26

3.3.2 PLL................................................................................................................................ 27

3.3.3 VCO’s............................................................................................................................ 27

3.3.4 Negative Bias Generator and Loop Filter........................................................................ 27

3.3.5 Phase Modulator............................................................................................................ 27

3.3.6 Reference Oscillator....................................................................................................... 28

3.4 CONTROL ................................................................................................................................ 28

3.4.1 DSP and PLA ................................................................................................................. 28

3.4.2 DSP Clock Oscillator...................................................................................................... 29

3.4.3 PLA PWM ...................................................................................................................... 29

3.5 MEMORY ................................................................................................................................. 29

3.6 POWER SUPPLIES..................................................................................................................... 31

3.6.1 Power On Function ........................................................................................................ 31

3.6.2 Power Supplies.............................................................................................................. 31

3.6.2.1 8V Regulator U900............................................................................................. 31

3.6.2.2 5V Regulator U901............................................................................................. 31

3.6.2.3 3.3V Regulator U912 .......................................................................................... 32

3.6.2.4 2.5V Regulator U903.......................................................................................... 32

3.6.2.5 Negative Power Supply U904E/F........................................................................ 32

3.6.2.6 Unswitched Battery (13V8_UNSW_F)................................................................. 32

4. ALIGNMENT (LEVEL 3 SERVICE ONLY).................................................................................. 33

4.1 TEST EQUIPMENT ..................................................................................................................... 33

4.2 TEST SET-UP ........................................................................................................................... 35

4.2.1 COMMS Set up .............................................................................................................. 36

4.2.2 Radio Preparation.......................................................................................................... 37

4.2.3 Alignment Procedure...................................................................................................... 38

4.2.3.1 VCO DAC Alignment .......................................................................................... 38

4.2.3.2 TCXO (Radio Netting Adjustment)...................................................................... 39

4.2.3.3 Rx Front End...................................................................................................... 40

4.2.3.4 Mute Adjustment................................................................................................. 41

4.2.3.5 RSSI................................................................................................................... 42

4.2.3.6 Tx Power............................................................................................................ 43

4.2.3.7 Modulation.......................................................................................................... 44

4.2.3.8 Programming...................................................................................................... 45

4.2.3.9 Customers Radio Personality Data ..................................................................... 45

5. REPLACEABLE PARTS............................................................................................................. 46

5.1 COMMON PARTS ...................................................................................................................... 46

5.2 BAND-SPECIFIC PARTS ............................................................................................................. 47

6. CIRCUIT DIAGRAMS ................................................................................................................. 47

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6.1 ISSUE 9 CIRCUIT DIAGRAMS ...................................................................................................... 47

APPENDICES

APPENDIX A ~ GLOSSARY
APPENDIX B ~ TRANSCEIVER CONNECTIONS
APPENDIX C ~ SRM9010 MICROPHONE
APPENDIX D ~ SRM9020 MICROPHONE
APPENDIX E ~ SRM9022 MICROPHONE
APPENDIX F ~ SRM9030 CONTROL HEAD
APPENDIX G ~ ANCILLARIES

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Declaration

The performance figures quoted are subject to normal manufacturing and service tolerances. The right is
reserved to alter the equipment described in this manual in the light of future technical development.

Copyright

All rights reserved. No part of this publication may be reproduced in any form or by any means without the
prior permission of TMC Radio.

Errors and Omissions

The usefulness of this publication depends upon the accuracy and completeness of the information
contained within it. Whilst every endeavour has been made to eliminate any errors, some may still exist. It
is requested that any errors or omissions noted should be reported to:

TMC Radio Pty Ltd.
1270 Ferntree Gully Road
Scoresby Vic
3179 Australia

Ph: [phone] (Direct: -3914)
Fax: [phone]
Mob: [phone]

E-mail: [e-mail]
www.tmcradio.com/

© TMC Radio 2006 page iv TNM-U-E-0002 Issue 1

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Document History

Issue Date Comments

1 January 2006 Initial issue

List of Associated Publications

Document No. Description Issue

TNM-I-E-0005 SRM9000 Series Installation Instructions 5
TNM-P-E-004 Selcall Product Manual 2.56
TNM-U-E-0012 SRM9020 Trunk Operating Instructions 2
TNM-U-E-0013 SRM9020 PMR Operating Instructions 2
TNM-U-E-0063 SRM9022 PMR Operating Instructions 1
TNM-U-E-0014 SRM9025 PMR Operating Instructions 2
TNM-U-E-0015 SRM9025 Trunk Operating Instructions 2
TNM-U-E-0003 SRM9030 PMR Operating Instructions 2
TNM-U-E-0004 SRM9030 Trunk Operating Instructions 2
TNM-U-E-0020 SRM9030 Brief User Guide 2
TNM-U-E-0042 SRM9010 Brief User Guide 2
TNM-U-E-0043 SRM9020 Brief User Guide 2
TNM-U-E-0044 SRM9025 Brief User Guide 2

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In vehicles

Warnings and Cautions

Compliance with RF Energy Exposure Standards: To minimise exposure to RF fields during
equipment service and repair, the antenna terminal of the SRM9000 radio should be connected
to a suitable non-radiating RF load when the transmitter is in use.

SRM9000 radio equipment is to be connected only to 12-volt negative earth systems.

with a 24-volt supply, an approved 24V/12V converter must be used. The supply must not be

taken from a 12V tap on the battery.

To avoid RF injury, do not touch the Antenna when the Transmitter is in use.

Double-fused 12V Supply Leads, Antenna cables and Speaker wiring is to be routed as far

away as possible from gas or fuel lines or any electronic control device. The radio transceiver

and antenna are to be mounted as far away as possible from these devices and their cabling.

Equipment is to be installed, by a competent person, in accordance with the requirements of

local radio communications authorities and/or Health and Safety regulations.

WARNING

WARNING

WARNING

WARNING

Post installation checks should be performed to ensure that there is no effect on the operation

of the vehicle’s electronics.

WARNING

Do not operate your radio, without a handsfree kit, whilst driving a vehicle.

WARNING

Do not operate your radio in an explosive atmosphere. Obey the “Turn Off Two-way Radios”

signs where these are posted, e.g. on a petrol station forecourt.

Caution

During disassembly and assembly, refer to Torque Settings in Section 1.7

Caution

Customer configuration files should be saved prior to any alignment adjustments.

Preparing the radio for alignment will erase from the radio all customer PMR and Trunking

configuration data (channel, signalling information etc). The only data retained by the

Alignment Tool is the factory alignment data for the radio (DAC settings for Tx power, front-end

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1. INTRODUCTION

1.1 GENERAL

The SRM9000 series of FM mobile radio transceivers is designed for PMR and Trunked operation in VHF
and UHF radio systems.

The system is available in a number of functional variants. Each variant uses the standard SRM9000
mobile transceiver, which is software configured for different control ancillaries. The software configuration
together with the type of controller (Basic or Enhanced microphone, Handset, or Alphanumeric Control
Head) determines the radio features for the different variants as follows.

PMR/Trunked

Basic Telemetry Transceiver No Display or Control Head. SRM9005
Low Range Version with Basic Fist Microphone. SRM9010
Mid Range Version with Enhanced Alphanumeric Fist Microphone. SRM9020
High-end Version with Graphics Display Handset. SRM9022
High-end Version with Alpha Display Handset. SRM9025
System Level Remote Control Head with Alpha capability and Handset /

Fist Microphone / Desk Microphone options.

SRM9030

1.2 SCOPE

This manual provides technical specifications, description and servicing details for the SRM9000 series of
mobile radio transceivers together with the related microphones and control heads.

Unless specifically stated otherwise, the text and illustrations refer to all versions in the series.

1.3 DESCRIPTION

The design concept utilises wide band analogue techniques for RF transmit and receive circuitry with digital
signal processing of analogue or digital modulation and demodulation. Electronic tuning is used throughout
the mobile to eliminate manual tuning and level adjustment.

A Digital Signal Processor (DSP) and a Programmable Gate Array (PLA) are used with other dedicated
devices in the SRM9000 to perform the following functions under software control:

• Frequency Synthesis of all operating frequencies.

• Modulation and demodulation of 10/12.5/20/25kHz FM signals on a per channel basis.

• Modem functionality for specified data modulation schemes.

• Filtering, pre-emphasis, de-emphasis, limiting, compression, muting, CTCSS, Selcall or any other

frequency or level dependent signal modification.

• Serial communications with the Control Ancillaries and Alignment Tool.

• Tuning Control data for Tx and Rx.

The SRM9000 Transceiver comprises a rugged extruded aluminium sleeve, which houses a single printed
circuit board assembly and provides all heatsink requirements. The sleeve housing is closed at each end
by high-impact plastic end caps; all cable ports and mechanical interfaces are sealed against moisture and
dust ingress.

The PCB assembly comprises a single, multi-layer PCB containing all the RF and control circuitry. The
PCB seats on an extruded aluminium tray that slides into the outer aluminium sleeve where it is secured
with screws accessed from the outside of the case. Provision is made under the main PCB tray assembly
for additional hardware options as well as optional accessories plugged directly into the main PCB.

There are two installation methods available for the SRM9000. The outer aluminium extrusion has side
flanges that allow the mobile to be bolted directly to any flat surface in the vehicle. A quick release cradle is
also available.

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Control Unit

Microphone

1.4 PRODUCT VARIANTS AND FACILITIES

Product variants and facilities are detailed in Table 1-1, Table 1-2 and Table 1-3.

Table 0-1 Common Features for All Variants

Feature: Model: 9005 9010 9020 9022 9025 9030

Control None or

Serial or
Parallel if
Option
Board

Display

Adjustable Display

- 1 digit LED 6 char LCD 8x14 char

- - Yes Yes Yes Yes

Illumination

Buttons and Keys

Speaker

- Vol Up/Down

- Yes Yes Yes* Yes* Yes

Frequency Bands

Channel Spacing
Menu driven
Customisable Menus

- - Yes Yes Yes Yes

- - Yes Yes Yes Yes

Display

Microphone

Select
1 Function

66-88MHz, 136-174MHz, 174-208MHz, 208-245MHz, 335-375MHz,

Display

Microphone

Vol Up/Down
4 Function
Scroll

Up/Down

400-480MHz, 440-520MHz

10/12.5/20/25kHz

Controller

Microphone

LCD

Graphics

102x64
pixels

Vol Up/Down
6 Function
12 Keypad
Send/End
Menu + Scroll

Display

Handset

2x12 char

LCD

Vol Up/Down
6 Function
12 Keypad
Send/End
Menu +

Scroll

with

8x14 char
LCD

Graphics
102x64
pixels

6 Function
12 Keypad
Send/End
Menu +

Scroll

* Note: Handsets have a built-in earpiece, therefore an external speaker is optional.

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Table 0-2 Conventional-PMR Variants

Feature: Model: 9005 9010 9020 9022 9025 9030

Channels
Signalling

Attack Operation
DTMF Encode
MPT1327 Trunking

PTT Limit Timer
with warning beeps

Busy Channel
Lockout

PTT Inhibit on Busy
Scanning

Voting

Priority Scanning
Nuisance Delete
Phonebook

1000 10 100 + 1000 1000 1000
CTCSS/DCS CTCSS/DCS

ANI

- Yes Yes Yes Yes Yes

- 2 Fixed Seq 2 Fixed Seq Yes Yes Yes
Yes Program-

mable

Yes 10 groups

of up to 16
channels
per group.

Yes 10 fixed

groups
consisting
of up to 16
channels
per group.

- - Yes Yes Yes Yes

- - 250 entries 250 entries 250 entries 250 entries

CTCSS/DCS
Selcall

User
selectable

10 groups
of up to 16
channels
per group, 4
user defined
scan
groups.

Up to 200 groups consisting of up to 16 channels per group.

CTCSS/DCS
Selcall

User
selectable

Yes

Yes

Yes

124 groups of up to 16 channels per group, 4
user defined scan groups.

Yes

CTCSS/DCS
Selcall

User
selectable

CTCSS/DCS
Selcall

User
selectable

Multiax
Mod/Demod

Option - - - - -

Yes

Function
Ignition Sense Input
VOX Handsfree
600 Ohm Interface
SIB
DMAP
ASI Standard

Option Option Option Option Yes Option

Yes

Option

Option
Option

ASI with GPS
Direct GPS
RSM with GPS
P25
Audio Discriminator

Option
Option
Option
Option
Option

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Table 0-3 Trunked Variants

Feature: Model: 9005 9010 9020 9022 9025 9030

Channels
Frequency Bands
Background Hunt

and Vote-Now
MPT1343 dial strings

1024 channels in 50 sub-bands
Specifically: 136-174MHz, 400-450MHz (and possible in all other bands)
Yes Yes Yes Yes Yes Yes

Yes Yes Yes Yes Yes Yes

ANN Numbering
Phonebook

- - - Yes Yes Yes
250 10 100+ 250 250 250

Memories
User Phonebook

Alpha Status List
SDM/EDMs
NPDs
Mod/Demod

Recall
entries
configured
by FPP only

- - Yes Yes Yes Yes
Yes - - Yes Yes Yes
Yes - - TBA TBA TBA
Option - - - - -

Recall
entries
configured
by FPP only.

Recall
entries
configured
by FPP only

Function
Attack Operation
Ignition Sense Input
VOX Handsfree
General External IO
600 Ohm Interface

Yes Yes Yes Yes Yes Yes
Yes Yes Yes Yes Yes Yes
Option Option Option Yes* Yes* Yes*
Option Option Option Option Option Option
Option Option Option Option Option Option

* Note: Requires external microphone for optimum performance.

Recall and
edit.

Recall and
edit.

Recall and
edit.

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SRM9000 SERIES SERVICE MANUAL

1.5 SOFTWARE VERSIONS AND NAMING

There are various associated items of Software (SW) required for the SRM9000 radio and programmer to
operate. This section simply defines the naming rules of the SW files to allow identification and conformity.

This allows different versions of SW to be distributed and co-exist without confusion.
The SRM9000 Transceiver has three items of SW for digital and analogue PMR, Trunking and Alignment.
The 9022/9025 Controller Mic/Handsets have one SW file for their PIC’s and 9030 Control Head has two

SW files for its Flash and EEPROM.

1.5.1 Filename Structure

Basically the Filename Structure is defined as follows:

• 2 character Application code

• 2 or 3 character SW Type code

• 3 character version number

• File Extension as required.

eg. 99tm533.bin
99p_533.bin
99s_533.bin
99cf101.hex
99ce101.hex

1.5.2 Application Code

This identifies the application the SW was initially designed for:
9k Standard SRM9000 Pre-Rev 9 Software
99 Standard SRM9000 Rev 9 Software
ak SRM9000 Pre-Rev 9 Software applicable for SRP9022
a9 SRM9000 Rev 9 Software applicable for SRP9022
rw Specific SW for Raywood Taxi Applications

1.5.3 Software Type Code

This identifies different types of SW within an application.

s_ Startup
p_ Standard PMR. DMAP or No option board
p_s PMR with Scrambler/Discriminator option board
p_g PMR with Direct GPS
p_a PMR with ASI Map27option board
p_u PMR with ASI SUP option board
p_q PMR with ASI-G Map27option board
a__ 9022 Standard PMR. DMAP or No option board
a_s 9022 PMR with Scrambler/Discriminator option board
a_g 9022 PMR with Direct GPS

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a_a 9022 PMR with ASI Map27option board
a_u 9022 PMR with ASI SUP option board
a_q 9022 PMR with ASI-G Map27option board
tm Standard MPT1343 Trunking. DMAP or No option board
ta Standard ANN Trunking. DMAP or No option board
tb Basic (9010/9020) MPT1343 Trunking. DMAP or No option board
tmg Standard MPT1343 Trunking. Direct GPS option board
tag Standard ANN Trunking. Direct GPS option board
tbg Basic (9010/9020) MPT1343 Trunking. Direct GPS option board
tma Standard MPT1343 Trunking. ASI Map27 option board
taa Standard ANN Trunking. ASI Map27 option board
tba Basic (9010/9020) MPT1343 Trunking. ASI Map27 option board
tmu Standard MPT1343 Trunking. ASI SUP option board
tau Standard ANN Trunking. ASI SUP option board
tbu Basic (9010/9020) MPT1343 Trunking. ASI SUP option board
tmq Standard MPT1343 Trunking. ASI-G option board
taq Standard ANN Trunking. ASI-G option board
tbq Basic (9010/9020) MPT1343 Trunking. ASI-G option board
TBD 9022 Trunking
bo Transceiver Boot-code
bc Transceiver Boot-Backup-code
bf Transceiver PLA-code
ba Transceiver PLA-Backup-code

Note. The above file names are not stored within the code. As a consequence, when the radio is read by the
FPP, the FPP will display version numbers and release dates for the Backup, Startup, PMR, TMR and
DMAP codes. The Bootloader, PLA Backup and PLA codes show release dates only.

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1.5.4 Version Number

This is a 3-digit number allocated by Engineering to identify the SW version.
e.g. 103 = Version 1.03

1.5.5 Exclusions

The Programmer SW does not follow the above rules as it is a PC based Program and its version number
can be easily identified by starting the SW. Later releases of SW will be backward compatible, unless
deliberately not so, in which case a different directory structure/path may be implemented.

1.5.6 Displaying Software Versions

Each Transceiver SW code file (e.g. 99tm533.bin, etc.) contains version information about itself and
possibly compatible Programming SW.

For Radio SW saved on Disk, this information can be displayed via the Programmer function:

Options : Upgrade_Software : Get_File

For Software loaded in the radio, information can be read from the Transceiver and displayed via the
Programmer function:

Options : Radio_Information

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SRM9030 Control Head SW can be displayed on the Control Head by holding the ‘3’ button down when the

radio is switched on. This is only implemented in CH V1.06 SW (Oct/2000) and later.

SRM9025 Handset SW has a similar method of Version identification.
SRM9020 Microphone SW has a similar method of Version identification.
SRM9022 Handset SW can be displayed by pressing the top side button when the radio is switched on.
SRM9010 Microphone does not have any method of determining loaded SW. There is only one version of

this SW in the field.

1.5.7 Automatic Version Upgrade Prompting

When a configuration is downloaded to the Transceiver, the Programmer performs a brief check on the SW
currently installed in the radio. If a later version of SW exists (on PC hard-disk) then the Programmer will
prompt the user with the following message:

NOTE. As early versions of FPP cannot recognise a more recent revision of the radio, it is important that
the latest FPP version is downloaded from http://www.tmcradio.com.

If YES is selected, the Transceiver Radio code is updated before the new configuration is downloaded.
If NO is selected, only the configuration is downloaded.
This process also updates the Startup code to ensure it is compatible with the loaded PMR or Trunk code.

Note : If the …\SRM9000\FPP\RadioSW folder contains no files, then the above check will not be

performed.

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1.5.8 Transceiver SW Description, Start-up and Backup-Software

The SRM9000 Transceiver software is split into the following separate modules:

• Bootloader and Backup Software

• Start-Up Software

• PLA and PLA-Backup Software

• Mainline PMR Software

• Mainline Trunk Software

When the Transceiver starts, it basically performs the following steps:

• Initial execution starts with the Bootloader code, which attempts to load the Start-Up Software (if
Start-Up checksum is bad, then the Backup Software is loaded.)

• Start-Up Software then downloads the PLA code (or PLA-Backup code if PLA checksum is bad)
to the PLA device. If both PLA and PLA-Backup checksums are bad then the radio is not
operational and serial communication is not possible.

• Start-Up Software then reads the On/Off switch plus Ignition-Sense lines and compares these
with saved parameters to determine if the radio should be continue to power-up or switch itself off
again.

• Start-Up software then attempts to load either PMR or Trunk Mainline Software (dependent on
saved parameter) and switches execution to complete the power-up process and start normal
operation.

If the Mainline Software cannot be loaded, or a Job file configuration has not been loaded (e.g. non­existent or checksum fail) then execution switches to Backup Software until the error is corrected (e.g. by
FPPing the radio).

There are three states that the radio can configure after switch-on:

• Mainline Trunk Software or Mainline PMR Software (normal power-up)
If the radio does not have a valid Job file configuration loaded, then it will display a “No PMR Cfg”
or “No TMR Cfg” message.

• Start-Up Software (characterised by “Alignment Mode” shown on the display). This is also the
code that is running when the radio is being aligned using the Alignment Tool.

• Backup Software (via various paths from above.)

1.5.9 Wailing Siren (Boot-up Software Corrupted)

A “WAILING SIREN” sound is emitted from the Loudspeaker while the radio is running in Boot Backup
Software. In this mode the FPP can be used to re-load a Jobfile, or re-load Start-Up or Mainline Operating
Software.

Simply writing a Jobfile to the radio should allow the FPP to determine and update the offending software –
however there may be instances where the FPP cannot determine this and the Start-Up and Mainline
Software should be updated manually. This can be done using the FPP : Upgrade_Software : Get_File …
then Download. Both Start-Up Software (filename = 99s_xxx.bin) and Mainline PMR (99p_xxx.bin) or
Trunk (99txxxx.bin) should be loaded if the FPP cannot automatically fix the problem. The wailing siren
should stop once the problem is fixed.

Note: Should these steps fail to restore the set and the Wailing Siren cease, the radio will need to be

returned to a Level 3 Service Centre for FLASH replacement.

1.6 ADJUSTMENT AND ALIGNMENT

There are no manual internal adjustments in the SRM9000. Re-programming and alignment is done using
software tools with the PCB installed in its chassis. For servicing, the radio PCB can be operated as a
stand alone unit provided a temporary heatsink is fitted under the transmitter PA module for transmitter

© TMC Radio 2006 page 9 TNM-U-E-0002 Issue 1

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servicing and that the receiver audio output be kept below 100mW for receiver servicing. Radio
performance is not adversely affected by operating without the outer sleeve but there will be some change
to performance when the metal cans are removed from the RF sections of the board.

On re-assembly, the PA module should be checked for a thin layer of heat-conducting paste. If this is
missing or dried-out, it should be replaced prior to re-assembly.

1.7 CHASSIS ASSEMBLY

Important - Take Note!

1.7.1 Torque Settings

Assembly of 'Chassis' (Inner Extrusion) to 'Outer Extrusion' 1.4 Nm (PA x 2), 1.25Nm (Others x 3)
Assembly of 'Front' and 'Rear' end-caps to 'Outer Extrusion' 1.4 Nm.

1.7.2 Thermal Compound Application

For radios using a PA tray without full bottom surface with no cut-out, no thermal compound is necessary.
However, on later radios that have a tray containing a cut-out section in the bottom, just enough thermal

compound should be applied to provide good thermal contact with the chassis.
Note. If thermal compound is old and difficult to spread, it should be discarded.

1.7.3 Assembly

The Inner extrusion should initially be fitted to the PCB and the assembly then slid into place within the
chassis.

Then by holding the inner extrusion upwards by hand, it is then important to insert all screws by hand and
ensure they have been fully inserted through the PCB, thereby locating the assembly correctly.

Still holding the inner extrusion upwards to ensure the assembly does not twist, lightly torque up the centre
screw of the row of three followed by the PA module mounting screw towards the middle of the chassis.

The remaining screws can then be screwed up to full torque followed by re-torque of the first two screws
again.

1.8 SPECIFICATION

1.8.1 General

Operation

Single or two frequency simplex (half-duplex).

Modulation

Frequency modulation (phase) F3E, F1D, F1E.

Operational Temperature Range

-30°C to 60°C
Supply Voltage Requirements

10.8V to 16.3V DC negative earth (13.8V nom.)
Current Consumption

Radio off
Standby (squelched):

Mobile With Control Mic Mobile With Alpha Mic Mobile With Alpha

Head

≤ 5mA ≤ 5mA ≤ 5mA
≤ 200mA ≤ 210mA ≤ 210mA*

© TMC Radio 2006 page 10 TNM-U-E-0002 Issue 1

SRM9000 SERIES SERVICE MANUAL

Rx Audio O/P:
300mW (not bridged)

4.0W
Transmit:
25W

1W

*Add 250mA to current consumption for Control Head with backlight on.

Frequency Bands Frequency Range Band Frequency Range

E0 66 - 88 MHz R1 335 - 375MHz

AC 136 - 174MHz TU 400 - 480MHz

K1 174 - 208MHz UW 440 - 520MHz

KM 208 -245MHz

Switching Bandwidth

Radio covers the complete band without retuning

Channel Spacing
10/ 12.5 / 20 / 25kHz
Frequency Stability (-30°C to

60°C)

Less than ±2.0ppm
Dimensions (mm) Height Width Depth
Transceiver
9010/30 Microphone
9020 Alpha Display Microphone
9022 Graphics Display Controller

Mic
9025 Alpha Display Handset
9030 Graphics Display Control

Head
9030 Desk Microphone
9030 Handset
* Does not include cable or strain relief

Weight

Transceiver 1.8kg

Conformance Approvals

* Pending in some cases

≤ 450mA ≤ 470mA ≤ 500mA *
≤ 1200mA ≤ 1220mA ≤ 1250mA*

VHF UHF

≤ 6.5A ≤ 6.5A
≤ 1.5A ≤ 1.5A

56
91*
96*

145*
165*

65

300
200

ETS EN 300 086 *
EN 300 113 *
EN 300 489 *

170

62
70
68

52
188
120

50

165

38
42
30
30
46

130

40

EN 300 219 *
Australia AS4295 *

USA FCC (AC, UW)

© TMC Radio 2006 page 11 TNM-U-E-0002 Issue 1

SRM9000 SERIES SERVICE MANUAL

1.8.2 Transmitter
Power Output

Transmitter Rise Time

Duty Cycle

Spurious Emissions

Residual Noise

Audio Frequency Distortion
Audio Frequency Response

Audio Sensitivity (1kHz)
(User programmable via FPP)

Any two levels programmable from
High Power: 25W Adjustable down to 1W

Low Power: 1W Adjustable up to 25W
Less than 40 ms

1 minute transmit: 4 minutes receive

< 0.25uW (9kHz to 1GHz)
< 1.0uW (1GHz to 4GHz)
60% deviation. CCITT Weighted
25kHz Channel Spacing >45dB

12.5kHz Channel Spacing >40dB
≤ 3% (at 60% deviation)
300 to 3000Hz* +1dB -3dB
Figures apply for a flat audio response or a 6dB/octave pre-

emphasis curve
(*2550Hz for 12.5kHz channel spacing)
RJ8 Connector: 40mV±2dB
Option Audio: 40mV±2dB

© TMC Radio 2006 page 12 TNM-U-E-0002 Issue 1