SRP9170/80 Series FM VHF/UHF Portable Radio Transceiver SERVICE MANUAL TNM-M-E-0023 ISSUE 1.
SRP9170/80 Series FM VHF/UHF Portable Transceiver TNM-M-E-0023 ~ Issue 1.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Table of Contents 1. INTRODUCTION ............................................................................................................................. 1.1 GENERAL ..................................................................................................................................... 1.1 SCOPE ......................................................................................................................................... 1.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 4.3.6 Reference Oscillator ...........................................................................................................4.7 4.4 SYSTEM CONTROLLER ..................................................................................................................4.7 4.4.1 DSP and PLA......................................................................................................................4.7 4.4.2 DSP Clock Oscillator ..................
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 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.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 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.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Warnings and Cautions 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.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 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 oC; or, • (Gas) Ex iC IIA T4; and, • (Dust) Ex tD A 22 IP67 T135 oC.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 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.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 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.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Disabled The 'False' state of a parameter. That indicates this parameter is not active. Typically this state is represented by an unmarked check box. Compare with Enabled. DSP Digital Signal Processor. DTMF Abbreviation of Dual Tone Multi-Frequency signalling. Used to dial into Telephone networks using tone dialling. Dual Watch A facility that enables the Radio to periodically monitor another channel for a signal above squelch.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 IS Intrinsically Safe. LCD Liquid Crystal Display. Link Establish Time A delay incorporated into the start of every selective call or DTMF transmission that allows for the finite delay of the radio equipment in responding to any radio signal. This includes both the commencement time of the originating transmitter and the response time of the receiver.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 PSTN Public Switched Telephone Network. PTT Press To Talk. This is the term given to the operator’s key normally used to commence transmitting a message. PTT Inhibit A state whereby transmission using the PTT is not allowed. Also know as Tx Lockout. PWM Pulse Width Modulation. Queuing The storing of a Selcall Identity for later transmission.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Selcall Mute A state of the audio gate whereby the loudspeaker is muted (closed) until a valid Selcall is received. Selcall System Selective Calling, uses a tone sequence at the start, and end, of a call to control which members of a fleet react to the transmission. SFM Short Form Memory. Sidetone Sidetone is the audio which can be (optionally) heard when Selcall, DTMF and tone burst transmissions are made.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 The forward channel from the TSC to the radio is divided into timeslots. Each site using the channel is allocated one timeslot in which to transmit and send signalling. Therefore, when on a timeshared channel, the radio may be able to receive bursts of signalling from different sites at different signal strengths and may receive periods when no signalling is received.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 1. INTRODUCTION 1.1 GENERAL The SRP9170/80 series of FM portable radio transceivers are designed for conventional PMR and Trunked operation in VHF and UHF radio systems. The transceiver is available in four functional variants. The variants are as follows: Description Portable Transceiver with no Keypad and Graphic Display. Portable Transceiver with no Keypad and Graphic Display, Intrinsically Safe. Portable Transceiver with Keypad and Graphic Display.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 1.4 PRODUCT VARIANTS AND FACILITIES Product variants and facilities are detailed in Table 1-1, Table 1-2 and Table 1-3. Table 1-1 Common Features for All Variants Model Feature 9170 / 9170is 9180 / 9180is Keys 7 Function keys. All keys can be customised. 7 Function keys. All keys can be customised. Keypad Non keypad. 12 button numeric keypad. Display LCD 12 character with bit mapped section and fixed icons. Graphic LCD 102 x 64 pixels.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Table 1-2 Conventional-PMR Variants Model Feature 9170 / 9170is 9180 / 9180is Channels 200 (nominal). 1000. Signalling CTCSS / DCS Selcall / FFSK / DTMF. CTCSS / DCS / Selcall / FFSK / DTMF. Text Messaging FFSK text messaging display. FFSK text messaging display. Selcall status messaging. Selcall status messaging. Attack Operation: Yes. Yes. DTMF Encode Pre-defined Encodes via function keys. Pre-defined Encodes via function keys.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Table 1-3 Analogue Trunked Variants Feature 9170 / 9170is Channels 1024 channels in 50 sub-bands. Frequency Bands 136 to 174 MHz, 400 to 480 MHz. Background Hunt and Vote-Now Yes. Yes. MPT1343 dial strings Yes. Yes. ANN Numbering Yes. Yes. Phonebook Memories 250. 250. User Phonebook Recall entries configured by FPP only. Recall and edit. Alpha Status List Yes. Yes. SDM / EDMs Yes. Yes. NPDs Yes. Yes. Attack Operation Yes. Yes.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 1.5 SOFTWARE VERSIONS AND NAMING CONVENTION There are various associated items of software (SW) required for the SRP9170/80 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 SRP9170/80 Transceiver has three items of SW for digital and analogue PMR, Trunking and Alignment. 1.5.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Version Number 1.5.4 This is a 3-digit number allocated by Engineering to identify the SW version: eg 182 = Version 1.82. Exclusions 1.5.5 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.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Options: Radio_Information The portable software version can be read from the portable display if required by accessing the Set-up menu and then choosing Radio Info and selecting the software version on the radio. 1.5.7 Automatic Version Upgrade Prompting When a configuration is downloaded to the Transceiver, the Programmer performs a check on the SW currently installed in the radio.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 1.5.7.1 Transceiver SW Description, Start-up and Backup-Software The SRP9170/80 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 Analogue Trunk Software; and, • P25 Software.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 1.6 ADJUSTMENT AND ALIGNMENT There are no internal adjustments in the SRP9170/80. Re-programming and alignment are performed using software tools. For testing, a special test jig is required so to provide power and control lines. As the radio has no internal adjustments, there is no need to have the radio PCBs powered while out of the chassis.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Dimensions (radio excluding antenna): Height Width Depth 150 mm 63 mm 37 mm Excluding volume and channel/zone control. Including 2200 mAh battery. Weight: Radio only 210 g Battery Li-ion 2200 mAh 250 g Antenna E0 30 g Antenna UW 19 g Battery Endurance: > 10 hours, high transmit power, 2200 mAh battery, 90:5:5 duty cycle.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 1.7.3 Receiver ETSI ≤ 0.5 µV PD (- 113 dBm) for 20 dB SINAD AS/NZS4295 ≤ 0.3 µV PD (- 117.5 dBm) for 12dB SINAD Adjacent Channel Selectivity: 25 kHz Channel Spacing: > 73 dB 25 kHz Channel Spacing: > 73 dB 12.5 kHz Channel Spacing: > 60 dB 12.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 1.7.4 Signalling 1.7.4.1 CTCSS All 38 standard CTCSS Tones are supported as per the table below. Identifier Frequency (Hz) Identifier Frequency (Hz) Identifier Frequency (Hz) Q 67.0 C 107.2 0 167.9 R 71.9 L 110.9 1 173.8 S 74.4 D 114.8 2 179.9 T 77.0 M 118.8 3 186.2 U 79.7 E 123.0 4 192.8 I 82.5 N 127.3 5 203.5 V 85.4 F 131.8 6 210.7 A 88.5 O 136.5 7 218.1 W 91.5 G 141.3 8 225.7 J 94.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Decoder Bandwidth: Not greater than ± 3.0 % Deviation Sensitivity: Less than 6.0 % of system deviation (for decode with full RF quieting). Noise Immunity: Less than 500 ms dropout per minute at 10 dB SINAD. (CTCSS tone deviation 10 % of system deviation. RF deviation 60 % at 1000 Hz). False Decode Rate: Talk-off: Less than 5 false decodes per minute (no carrier input).
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Selcall Tone Frequency Table (Frequency in Hz).
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TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 1.7.4.5 DCS Data rate: Deviation: Codeword size: Available Codes: Turn off code: 134 bits per second, frequency modulated. 7.46 ms/bit 171.6 ms per codeword continuously repeating. 0.5 kHz for 12.5 kHz systems. 1 kHz for 25 kHz systems. 23 bits comprising: 8 bits - DCS code (3 octal digits 000-777); 3 bits - Fixed octal code 4; and, 11 bits - CRC (error detection) code. 104 codes from 512 theoretically possible codes (see below).
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TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 2. SERVICE PHILOSOPHY 2.1 SERVICE CONCEPT The SRP9170/80 series has been designed to operate in PMR, analogue trunked, and P25 digital modes using common core electronics, software and interfacing. There are three levels of service available: Level Activity Recommended Spares Recommended Test Equipment 1 Replacement of complete transceiver / antenna. Antennas, ancillaries. Multimeter, PC, radio software.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 All software is covered by a warranty of 3 months from delivery, and within this warranty period the Company will correct errors or defects, or at its option, arrange free-of-charge replacement against return of defective material.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 3. DISASSEMBLY Remove the Battery Refer Figure 3-1. (1) Slide the battery release button towards the bottom of the transceiver to release the battery. (2) Lift the battery away from the radio. Figure 3-1 Battery Removal Remove the Antenna, On / Off / Volume Control Knob, Channel Control Knob, and Zone Control Lever Refer Figure 3-2. (1) Unscrew and remove the antenna. (2) The On / Off / Volume Control knob is a friction-fit part.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Figure 3-2 Antenna and Knob Removal Remove the Side RF Connector Refer Figure 3-3. Unscrew the RF connector (or dummy insert if fitted) from the side accessory connector with the removal tool (6102 790 0016) using a counter-clockwise motion. Figure 3-3 Page 3.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Remove the Frame Assembly Refer Figure 3-4. (1) Use a small, flat-blade screwdriver to carefully release the cast metal frame assembly from the bottom of the front casing. This action releases the radio PCB from the MMI PCB. (2) Gently ease the frame assembly out of the front casing taking care not to damage the three flex circuits.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Remove the Metal Screen from the Radio PCB and Frame Assembly Refer Figure 3-5. (1) Use a small, flat-blade screwdriver to release the nine spring tabs on the metal screen. Note: releasing three spring tabs on one side and the one at the top of the metal screen should be sufficient to remove the metal screen. (2) Lift the metal screen away from the radio PCB and frame assembly. Figure 3-5 Removal of Metal Screen Remove the MMI Assembly Refer Figure 3-6.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Figure 3-6 Removal of MMI Assembly RE-ASSEMBLY Re-assembly is the reverse of disassembly.
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TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 4. TECHNICAL DESCRIPTION 4.1 RECEIVER Refer to Figure 4-1. Description based on TU-band radios.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 control voltages vary from 0 to 3.3 V after integration of each PWM signal. The value of each of the four control voltages is dependent on channel frequency and tuning. Each control voltage is applied to level shifting transistors, Q404 to Q411, where they are converted to negative voltages in the range - 0.5 V to - 11.5 V. The - 12.0 V rail of the level translators is generated by U904D/E with D903 to D906 providing the required voltage multiplication.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 4.2 TRANSMITTER Refer Figure 4-2. RX_ENABLE1 From DSP TX_ENABLE From DSP Tx VCO Enable Switch Q603 Tx_PSU = ON (Tx_PON = ON) INT_MIC Tx Audio Switch U800C Rx/Tx Audio Switch U800A INL ADC/DAC CODEC U820 EXT_MOD OUTR EXT_SW From PLA Rx_PSU = OFF (Rx_PON = OFF) TX_MODE = ON From PLA Rx Audio/ Tx Mod Switch U302B I From IQ Demod U400 Q INR From PLA From DSP Fused 7.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Comparator U520B monitors the Tx PA current through L571.The output of U520B is temperature compensated by R535/536/537, and then passed to analogue switch U800B. Comparator U301C is used to compare the output of U800B with a 13 ms ramp signal. The output of U301C is passed to the PLA and then processed by the DSP. 4.2.2 Power Control Transmitter output power is stabilised by a feedback control loop.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 4.3 PHASE-LOCKED LOOP (PLL) FREQUENCY SYNTHESISER General 4.3.1 Refer to Figure 4-3. The PLL frequency synthesiser consists of one transmitter VCO, two receiver VCOs, loop filters, varactor negativevoltage bias generator, reference oscillator, and an integrated, fractional-N and integer-N synthesiser device U701. When combined, these components form the main and auxiliary PLL frequency synthesisers.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 frequency, an error signal is generated by the phase comparator. This error signal forces the VCO to change frequency in a direction to minimise the error signal. A valid lock detect output is derived from pin 12 and is sampled by the PLA. During transmit, if an unlocked signal is detected the radio will switch back to receive mode. An unlocked signal in receive mode will cause the radio to beep. 4.3.2.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 4.3.6 Reference Oscillator The TCXO, U700, determines the overall frequency stability and frequency accuracy of the radio. The frequency setting is achieved by adjusting its ADJ voltage with the Alignment Tool. In addition, the ADJ input is used in a frequency control loop with the receiver I and Q signals to provide receiver AFC. U700 operates at 14.4 MHz and is specified at ± 1.5 ppm frequency stability over the temperature range – 30 °C to + 80 °C. 4.
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TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 The monitored analogue voltages are: 4.4.4 • Tx/Rx frequency synthesiser loop volts (LOOP_VOLTS); • MMI key detection (KEY_DET); • Tx PA current (TX_CURRENT); • Transceiver audio volume (VOLUME); • type of external device detection (EXT_SENSE); • battery voltage (BAT_SW); • Zone Switch value (ZONE); and, • Channel Switch value (CHANNEL). Digital I/O 4.4.4.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 4.4.6 Serial Data Interface A serial data port is provided on the side accessories connector, S4. The serial data interface supports the following signals: 4.4.6.1 Receive Data (RxD1_In) Transistors Q90 and 91 form an inverting buffer that translates the incoming data stream to 0 to 3 V logic.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 4.5 POWER SUPPLIES Refer to Figure 4-5. BAT_FS RF PA (U500) F902 F900 4A Battery 7.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Power Supply Detail 4.5.2 The following is a list of the SRP91X0 power supplies and some of the devices and circuits they supply. 4.5.2.1 5V Regulator U900 This regulator can be powered down by a STBY signal from the PLA. The RX_PSU supply is switched via Q903.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 • 3P3 to Rx BPF tune bias (R469); and, • 3P3 to synthesiser (U701). 4.5.2.4 Un-Switched Fused Battery • BAT_FS supplies the RF PA (U500). • BAT_FS supplies the transceiver On / Off switch. 4.5.2.5 Switched Battery • BAT_SW supplies the audio PA (U850). • BAT_SW supplies the Accessories Connector (S4). 4.6 KEYBOARD AND GRAPHIC DISPLAY MMI The transceiver interfaces to the MMI assembly via connector S5 (transceiver) and J1 (MMI). Refer Figure 4-6.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 4.6.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Function Keys 4.6.4 Four function keys are located below the display: Legend Function M Activate menu. \/ Scroll down through channels (or menu, if active). /\ Scroll up through channels (or menu, if active). OK Confirm choice or action (i.e. Enter). The SRP9180 has 12 additional keys arranged as a DTMF keypad. Figure 4-7 4 - TECHNICAL DESCRIPTION Keypad Layout Page 4.
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TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 5. ALIGNMENT (LEVEL 3 SERVICE ONLY) This procedure is applicable to all versions of SRP9170/80 portable transceivers. Caution 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).
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 5.2 TEST SET-UP Refer Figure 5-1. Notes for test setup: 1. The PTT switch on the Radio Test Interface Unit (refer Figure 5-2) activates transmit on the transceiver. 2. Interface data levels are TTL with RS232 polarity (i.e. 0 V = MARK, + 5 V = SPACE), and will work with most personal computers. 3. The 16 R resistor in the Radio Test Interface Unit simulates the speaker load.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Figure 5-2 5.2.1 1. SRP9170/80 Radio Test Interface Unit COMMS Set up Copy the SRP9170/80 Alignment Tool Computer Software file to the PC hard drive and run the program. The Alignment Tool Opening Menu is displayed. 2. Go to the Options menu and choose Comms Setup. 5 - ALIGNMENT Page 5.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 3. The Comms Setup dialogue box is displayed. Select the Comms Port setting appropriate to the configuration of your PC and choose OK. (Usually COM1). Page 5.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 5.2.2 Radio Preparation Radio parameters need to be aligned sequentially as detailed in this procedure. 1. At the Opening Menu, select the Align Menu and choose Prepare/Read Radio. 2. The WARNING is displayed. Choose No if you want to save the configuration and use the FPP software to read and save the data to a file. Choose Yes if you want to proceed and go to step 3. 3. The radio alignment data is read (indicated by percentage bar) and stored.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 Alignment Procedure 5.2.3 Radio alignment must be done in the sequence detailed in the following paragraphs. This alignment assumes that the radio is functioning normally. 5.2.3.1 VCO DAC Alignment 1. Select the VCO DAC page. 2. Select Auto Align. The Synth DAC Rx slider will automatically adjust its value for each receiver alignment frequency to set the VCO value between 85 and 95. 3. Select PTT and then select Auto Align.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 5.2.3.2 TCXO Frequency Adjust 1. Select the Mute/TCXO page. 2. Select PTT. 3. Adjust the TCXO slider to ensure that the transmit frequency error is within 50 Hz for the selected channel (to be measured on the RF Test Set frequency counter). 5 - ALIGNMENT Page 5.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 5.2.3.3 Rx Front End 1. Ensure that the TCX0 Alignment has been done before proceeding with this section. 2. Select the RX Front End page. 3. Select Open Mute. 4. Set the Volume slider to 21. Speaker audio should now be visible on the CRO. If required readjust the Volume slider to a suitable level. 5. Select Turn AFC ON. 6.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 5.2.3.4 Mute/Audio Balance Adjustment Note. This adjustment has default setting of 1000 / 2600 and should not need changing except for specific requirements. Squelch Adjustment 1. Select the Mute/TCXO page and select Open Mute. 2. Set the RF signal generator to the receiver alignment frequency, and adjust the RF level such that the desired mute opening SINAD (typically 10 dB SINAD) is achieved. 3. Select Mute Closed and remove the RF input from the radio.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 5.2.3.5 RSSI 1. Select the RSSI Cal page. 2. Set the Signal Generator for a RF output level of – 90 dBm and 2 kHz deviation at the specified frequency. 3. Activate the Store RSSI button. The receiver RSSI threshold setting is calibrated. 4. Monitor the battery voltage at the simulated battery terminals with an accurate multimeter. 5. Adjust the power supply so that the voltage reads exactly 7.2 V ± 5 mV. 6.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 5.2.3.6 Tx Power 1. Select Tx Power/Mod page. 2. Select Channel 0. 3. Select the 0.5 Watt power level. 4. Press the PTT button. 5. Adjust the Tx Final Value slider for a power output of 0.5 W. 6. Deselect PTT. 7. Repeat steps 3 to 6 for the three remaining channels (1, 2, and 3). 8. Select Channel 0. 9. Select the 1 Watt power level. 10. Press the PTT button. 11. Adjust the Tx Final Value slider for a power output of 1 W. 12.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 17. Adjust the Tx Final Value slider for a power output of 5 W. Note that the supply current is less than 2.5 A. 18. Deselect PTT. 19. Repeat steps 15 to 18 for the remaining 3 Channels (1, 2, and 3). 20. Press Calibrate TX PA Current button and follow the instructions to automatically set the maximum current limit. 5.2.3.7 Modulation 1. Select Tx Power/Mod page. 2. Select Deviation Calibration. 3. Select Channel 0. 4. Select the 0.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 11. 5.2.3.8 Reduce the Tx Audio input level to 10 mV RMS and check that the deviation is within the range ± 1.25 kHz to ± 1.75 kHz for all channels. Programming When all channels have been aligned the radio is programmed with the new alignment data: 1. Select Align and choose Write Alignment. 2. A warning message is displayed. 3. Choose Yes. New alignment data is written to the radio. 5.2.3.
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TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 6. REPLACEABLE PARTS The parts listed in this section are considered to those most likely to need replacement due to physical damage to the radio. 6.1 COMMON PARTS Ident 6.2 Description Quantity per Assembly Part Number SRP9180 PTT Button. 1 6102 310 0249 SRP9180 Function Button – A. 1 6102 310 0250 SRP9180 Function Button – B. 1 6102 310 0250 SRP9180 Speaker Clip. 1 6102 310 0242 SRP9180 Speaker Cloth.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 ANTENNA WHIP R1 BAND (335-375 MHz) SRP9100. PA-AWR1 ANTENNA HELICAL TU BAND (400-480 MHz) SRP9100. PA-AHTU ANTENNA HELICAL UW BAND (440-520 MHz) SRP9100. PA-AHUW ANTENNA WHIP TU BAND (400-480 MHz) SRP9100. PA-AWTU ANTENNA WHIP UW BAND (470-520 MHz) SRP9100. PA-AWUW BATTERY SRP9180 Li-ion 2200 mAh. PAR-9180BATL2x EXTERNAL ANTENNA CONNECTOR. PA-CON LEAD PROGRAMMING SRP9180. PAR-9180PRLDU Page 6.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 APPENDIX A - ACCESSORY CONNECTOR The following table details the pin-out on the accessory connector. Pin Signal Name Use Signal type Direction 1 Ext_Rx2 Balanced Audio Out (+). 10 Vp-p into 16 ohm To Accessory. 2 Ext_Rx1 Balanced Audio Out (-). 10 Vp-p into 16 ohm To Accessory. 3 B+ Battery Supply Voltage. 6.5 V to 8.4 V (68 ohm resistor in series) To Accessory. 4 Ext_Mod Multi-function. External modulation. To Radio.
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TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 APPENDIX B - ACCESSORIES Lapel Speaker Microphone PAR-9180LMS2 Figure B-1 Lapel Speaker/Microphone Introduction The lapel loudspeaker/microphone is a robust, lightweight, unit with an integral press-to-talk (PTT) switch and a headset socket. The unit connects to the portable radio via a 450 mm curly cable (un-stretched) fitted with a M5 type plug. Specification Microphone Maximum circuit current: 10 mA Type: Electret.
TNM-M-E-0023 SRP9170/80 Service Manual Issue 1.00 DC voltage overshoot during switching periods: Within 2% of nominal voltage. Loudspeaker Impedance: 16 Ω ± 2 Ω Power rating: 0.3 W nominal, 0.5 W maximum. Headset socket: 3.5 mm - loudspeaker disconnected when jack inserted. Environmental Operating temperature range: – 20 °C to + 55 °C Storage temperature range: – 40 °C to + 80 °C OPERATION Ancillary Type R4 identifies to the radio that the accessory is a Lapel Speaker/Microphone.
