TMC Radio SRP9170 User manual

SRP9170/80 Series
FM VHF/UHF Portable
Radio Transceiver
SERVICE MANUAL
TNM-M-E-0023
ISSUE 1.00
Mar 2009

SRP9170/80 Series FM VHF/UHF Portable Transceiver TNM-M-E-0023 ~ Issue 1.00

TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00
Page i
Table of Contents
1. INTRODUCTION ............................................................................................................................. 1.1
1.1 G
ENERAL
..................................................................................................................................... 1.1
1.2 S
COPE
......................................................................................................................................... 1.1
1.3 D
ESCRIPTION
............................................................................................................................... 1.1
1.4 P
RODUCT
V
ARIANTS
A
ND
F
ACILITIES
............................................................................................. 1.2
1.5 S
OFTWARE
V
ERSIONS AND
N
AMING
C
ONVENTION
.......................................................................... 1.5
1.5.1 Filename Structure............................................................................................................. 1.5
1.5.2 Application Code ................................................................................................................ 1.5
1.5.3 Software Type Code .......................................................................................................... 1.5
1.5.4 Version Number ................................................................................................................. 1.6
1.5.5 Exclusions.......................................................................................................................... 1.6
1.5.6 Displaying Software Versions ............................................................................................ 1.6
1.5.7 Automatic Version Upgrade Prompting.............................................................................. 1.7
1.5.8 Wailing Siren (Boot-up Software Corrupted)...................................................................... 1.8
1.6 A
DJUSTMENT AND
A
LIGNMENT
...................................................................................................... 1.9
1.7 S PECIFICATION ............................................................................................................................. 1.9
1.7.1 General .............................................................................................................................. 1.9
1.7.2 Transmitter....................................................................................................................... 1.10
1.7.3 Receiver ........................................................................................................................... 1.11
1.7.4 Signalling.......................................................................................................................... 1.12
1.7.5 Environmental .................................................................................................................. 1.16
2. SERVICE PHILOSOPHY ................................................................................................................ 2.1
2.1 S
ERVICE
C
ONCEPT
....................................................................................................................... 2.1
2.2 W
ARRANTY
.................................................................................................................................. 2.1
2.2.1 Service Within and Out Of Warranty.................................................................................. 2.1
2.2.2 Ancillary Items.................................................................................................................... 2.1
2.3 S
OFTWARE
P
OLICY
....................................................................................................................... 2.1
3. DISASSEMBLY............................................................................................................................... 3.1
4. TECHNICAL DESCRIPTION .......................................................................................................... 4.1
4.1 R
ECEIVER
.................................................................................................................................... 4.1
4.1.1 Front-End Filters and RF Amplifier .................................................................................... 4.1
4.1.2 First Mixer and IF Section .................................................................................................. 4.2
4.1.3 IQ Demodulator.................................................................................................................. 4.2
4.1.4 Receiver Audio Processing................................................................................................ 4.2
4.2 T
RANSMITTER
.............................................................................................................................. 4.3
4.2.1 Drivers and PA Stages....................................................................................................... 4.3
4.2.2 Power Control .................................................................................................................... 4.4
4.2.3 Antenna Switch and Harmonic Filter.................................................................................. 4.4
4.2.4 Transmitter Audio Processing............................................................................................ 4.4
4.3 P
HASE
-L
OCKED LOOP
(PLL) F
REQUENCY
S
YNTHESISER
............................................................... 4.5
4.3.1 General .............................................................................................................................. 4.5
4.3.2 Integrated Synthesiser ....................................................................................................... 4.5
4.3.3 VCOs.................................................................................................................................. 4.6
4.3.4 Negative Bias Generator and Loop Filter........................................................................... 4.6
4.3.5 Phase Modulator ................................................................................................................ 4.6

TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00
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4.3.6 Reference Oscillator ...........................................................................................................4.7
4.4 S
YSTEM
C
ONTROLLER
..................................................................................................................4.7
4.4.1 DSP and PLA......................................................................................................................4.7
4.4.2 DSP Clock Oscillator ..........................................................................................................4.8
4.4.3 PLA PWM ...........................................................................................................................4.8
4.4.4 Digital I/O ............................................................................................................................4.9
4.4.5 System Memory..................................................................................................................4.9
4.4.6 Serial Data Interface.........................................................................................................4.10
4.5 P
OWER
S
UPPLIES
.......................................................................................................................4.11
4.5.1 Power On Function ...........................................................................................................4.11
4.5.2 Power Supply Detail..........................................................................................................4.12
4.6 K
EYBOARD AND
G
RAPHIC
D
ISPLAY
MMI......................................................................................4.13
4.6.1 Keypad..............................................................................................................................4.13
4.6.2 LCD Assembly Interface...................................................................................................4.13
4.6.3 MMI Interface Signals .......................................................................................................4.14
4.6.4 Function Keys ...................................................................................................................4.15
5. ALIGNMENT (LEVEL 3 SERVICE ONLY) ......................................................................................5.1
5.1 T
EST
E
QUIPMENT
..........................................................................................................................5.1
5.2 T
EST
S
ET
-
UP
................................................................................................................................5.2
5.2.1 COMMS Set up...................................................................................................................5.3
5.2.2 Radio Preparation...............................................................................................................5.5
5.2.3 Alignment Procedure ..........................................................................................................5.6
6. REPLACEABLE PARTS..................................................................................................................6.1
6.1 C
OMMON
P
ARTS
...........................................................................................................................6.1
6.2 A
CCESSORIES
...............................................................................................................................6.1
APPENDIX A - ACCESSORY CONNECTOR.............................................................................................. A
APPENDIX B - ACCESSORIES................................................................................................................... B
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.

TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00
Page iii
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:
Product Engineering
TMC Radio Pty Ltd.
1270 Ferntree Gully Road
Scoresby Victoria
3179 Australia
Ph: [phone]
Fax: [phone]
e-mail: [e-mail]
http://www.tmcradio.com/

TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00
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Document History
Issue Date Comments
Draft 1.00 2009-03-31 Initial issue.
List of Associated Publications
Document No. Description Issue
TNM-U-E-0088 SRP9180 PMR Brief User Guide. 1
TNM-U-E-0089 SRP9180 PMR Operating Instructions. 1
TNM-U-E-0090 SRP9180 TMR Operating Instructions. 1
TNM-U-E-0091 SRP9180 P25 Operating Instructions. 1

TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00
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Warnings and Cautions
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 tuning etc).
WARNING
SRP9170/80 radio equipment is to be connected to TMC approved chargers and accessories only.
WARNING
Do not dispose of batteries in a fire or expose them to high temperatures.
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, eg on a petrol station forecourt.
WARNING
Servicing and upgrades of IECEx approved Intrinsically Safe radios and accessories must only
be carried out by TMC Radio Pty Ltd IECEx Intrinsically Safe trained staff, at locations that have
been IECEx approved. Please contact TMC Radio Pty Ltd for your nearest Service Department.

TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00
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IECEx Intrinsic Safety
Radio models approved for use in hazardous environments according to the IECEx scheme are marked with the
approval number XXXXXXXXX, or XXXXXXXXX.
The Intrinsically Safe protection rating for these models are either:
• (Gas) Ex iC IIB T4; and,
• (Dust) Ex tD A 22 IP67 T135
o
C; or,
• (Gas) Ex iC IIA T4; and,
• (Dust) Ex tD A 22 IP67 T135
o
C.
The following MUST be observed to maintain the IECEx protection rating:
a) use only approved Simoco battery (PAR-9180BATL2 or PAR-9180BATL3)
;
b) battery charging must only be carried out in non-hazardous areas, using an approved battery charger;
c) metal belt clips must NOT be used in hazardous areas;
d) it is a requirement that when the radio is used in a hazardous area that either the SRP9180 Accessory
Connector Cover (6102 350 1446) or an approved Simoco IECEx accessory is fitted;
e) approved accessories may only be connected and disconnected outside the hazardous areas;
f) prior to use in a hazardous area, inspect the radio and accessories for signs of damage. Any visible
signs of damage to the radio or accessories may compromise the integrity and safety of the radio. A
damaged radio or accessories must be repaired or replaced prior to use in a hazardous area;
g) incorrect storage, handling or operation of the radio and accessories, as specified in TMC Radio Pty Ltd
published User Guides and Service Manuals, may compromise the safety and integrity of the radio or
accessories;
h) approved labels stating the IECEx rating level must be affixed to the radio and accessories, and must
be legible, before their use in a hazardous area;
i) servicing and upgrades of IECEx approved Intrinsically Safe radios and accessories must only be
carried out by TMC Radio Pty Ltd IECEx Intrinsically Safe trained staff, at locations that have been
IECEx approved. Please contact TMC Radio Pty Ltd for your nearest approved Service Department;
and,
j) substitution of parts or accessories will void the equipments’ IECEx Intrinsic Safety rating.

TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00
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GLOSSARY OF TERMS
A summary of common radio terms and some other terms used in this document, and their meanings, are given
below.
3RP Trunking Signalling Specification relating to trunked networks for shared use. Used
primarily for networks in France.
ADC Analogue to Digital Converter.
AFC Automatic Frequency Control.
AGC Automatic Gain Control.
Alarm A Selcall sequence sent from subscriber equipment to indicate an Emergency situation.
When activated the radio will enter a repeating sequence consisting of an Alarm Live
Transmit Time and an Alarm Dead Receive Time.
ANN Abbreviation for Algorithmic Network Numbering. This is the numbering system where the
numbers presented to the radio user can be mapped directly to the MPT1327 PFIX /
IDENTs and vice versa by use of a fixed algorithm in combination with some other
customisation parameters. See also FPP and MEP.
ANI Automatic Number Identification.
Attack Operation
Auto Interrogate An Acknowledge identity sent as a response to an individual reset call.
Automatic Power Feature whereby the transmit power is automatically set to a level determined by the level
of the received signal. This is used to extend the battery life and/or reduce radiated
emissions.
Background Hunting The searching for an alternative and 'better' control channel whilst already on a valid
control channel.
BCAST MPT1327 broadcast message. Used to transmit information about the trunked radio
system to radio units.
BPF Band-Pass Filter.
Busy The state of a channel such that:
• for a non-signalling channel - if Busy this means that the carrier is above squelch;
• for a channel with CTCSS / DCS - if Busy this means a signal is being received
with either no CTCSS tone / DCS code or the correct CTCSS tone / DCS code;
and,
• for a channel with Selcall - if busy this means a closed channel where the signal is
above squelch.
A feature that equates to 'Do Not Disturb' such that the radio will reject all non-
emergency calls. This feature can be activated using the busy key (if assigned) or
from a menu; it is reset to disabled at switch on.
C4FM Compatible 4-Level Frequency Modulation.
Call Back A request, sent by the dispatcher, to a unit requesting that the unit calls the dispatcher
back.
CCSC Control Channel System Codeword.

TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00
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Channel Spacing The distance (in Hz) between the defined frequency channels.
CHEKKER System Interface Specification for Trunked Networks in Germany.
CLIM Call Limit Time; time limit on calls made. Normally this is defined by the Call Time Limit
parameter but can by overridden by the TSC depending upon the setting of TSCLIM.
CLIME Emergency Call Limit Timer.
Closed A state where transmit and receive are not allowed until a Selcall message to open the
channel has been received. A Closed Channel is one that defaults (when selected or after
timed reset) to its closed state. Contrast with Open. Normally a Closed channel would
have Selcall Mute and PTT Inhibit would be enabled.
CODEC COde (Analogue to Digital Converter) / DECode (Digital to Analogue Converter).
Community Repeater A communications set-up whereby different groups of radios can operate by using only
one base station. This is achieved by the use of CTCSS tone signalling such that each
group has a different CTCSS tone (encode and decode) and radios can only
communicate with other radios in their group. Only one group of radios can use the base
station at any one time.
Continuous Control Channel
A continuous control channel is one that is only used by one site. There are no breaks in
the transmission of signalling. Emergency Call Time Limit.
Control Channel A channel used for the transmission of messages that enables the TSC to control radios.
Control channels may either Continuous or Timed Shared.
Control Channel Burst A feature that enables control channel burst transmissions on systems using time-shared
control channels. It is unavailable if the control channel acquisition type is not 'Time
Shared'. To make available: go to Control Channel Acquisition Type and set to Time-
shared.
CRU Central Repair Unit.
CTCSS CTCSS stands for Continuous Tone Controlled Squelch System. A continuous tone
(lower than the audio range of the receiver) is modulated onto the carrier as well as other
signalling or voice traffic. Only receivers that have been programmed to recognise the
same CTCSS tone are able to receive the transmissions, since the squelch of receivers
looking for different CTCSS tones prevents the audio from being heard. This provides a
simple method of sending messages to selected receivers and allows several different
networks to use the same frequency. CTCSS is also known as Tone Lock or Tone
Squelch.
DAC Digital to Analogue Converter.
Dash (-) digits Digits known as 'No Tone' digits used in Selcall Identities.
DCS Digital Coded Squelch system is based on sending a continuous stream of binary code
words using low deviation, direct frequency shift keying. Only receivers which have been
programmed to recognise the same DCS sequence are able to open their squelch and
receive the associated speech transmissions. This provides a simple method of sending
messages to selected receivers only and allows several different networks to use the
same frequency. DCS is also known as CDCSS.
Decode Reception of signalling, either Selcall, where encoded tone frequencies are decoded and
identified as specific tones digits, or CTCSS/DCS, where tones are analysed to see if the
channel should be opened.
Demanded Demanded Registration; a procedure in which the TSC forces a single radio unit to
attempt registration immediately (providing the radio is not already attempting to register).