Pyramid DC Receiver Service Manual

Page 1SVR-200 Service ManualSVR-200Vehicular RepeaterThis manual is intended for use by qualified technicians and includes all necessary information

Page 10SVR-200 Service ManualAlignment UHFBefore aligning the SVR-200, ensure that the mobile radio is aligned per the manufacturer’s service procedu

Page 11SVR-200 Service ManualFigure 2UHF Receiver1. Receiver front end: Connect a DC voltmeter to TP1 on the SVR-200 main board. Set the service mon

Page 12SVR-200 Service ManualAlignment 700/800/900 MHzBefore aligning the SVR-200, ensure that the mobile radio is aligned per the manufacturer’s ser

Page 13SVR-200 Service ManualFigure 3700/800/900 MHz Receiver1. Receiver front end: Connect a DC voltmeter to TP1 on the SVR-200 main board. Set the

Page 14SVR-200 Service ManualMobile RadioCommunicationsMonitor ACommunicationsMonitor BSVR-200InterfaceCableFigure 4

Page 15SVR-200 Service ManualMenu selectionsFileOpen: Allows you to load a previously saved file from disk. Enter the file name or select from the W

Page 16SVR-200 Service ManualMobile COR polarity: Determines if the COR signal from the mobile is active high or active low.Radio Type: Select either

Page 17SVR-200 Service ManualTheory of OperationReceiver:The receiver is a double-conversion superheterodyne type, designed for narrow band FM recepti

Page 18SVR-200 Service ManualReceive audio path: Receiver audio from the transceiver module is input on P2 pin 13 and presented to U5 pin10 and pin 16

Page 19SVR-200 Service ManualP1.5 Serial clock line output. Serial data that is sent to the PLL, the E²PROM and the audio processor chipsare clocked

Page 2SVR-200 Service ManualForewordScope of this manualThis manual contains the specifications, functional description, operating instructions, schem

Page 20SVR-200 Service ManualT0 Test input, active low. Shorting J3 puts the microprocessor into test mode for alignment purposes. Ifshorted at powe

Page 21SVR-200 Service ManualNotesThis Page Intentionally left blank

Page 22SVR-200 Service ManualParts ListReference Description Part #C1,C5,C6,C9,C10,C12,C15,C18,C35,C37 ... .1μFd chip capacitor

Page 23SVR-200 Service ManualR50,R77-R80 ... 15K chip resistor ...

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44332211D DC CB BA AVCCVCCSizeScaleCAGE CodeDWG NORevSheetofCPYRAMID COMMUNICATIONSThursday, February 07, 200811C15182 Triton Lane #102Huntington Beac

5544332211D DC CB BA AVCCVCCVCCVCCTP1SizeScaleCAGE CodeDWG NORevSheetofDPYRAMID COMMUNICATIONSFriday, October 17, 200811C15182 Triton Lane #102Hunting

44332211D DC CB BA AVCCVCCVCCVCCSizeScaleCAGE CodeDWG NORevSheetofDPYRAMID COMMUNICATIONSFriday, February 08, 200811CHuntington Beach CA 92649(714)

5544332211D DC CB BA AVCCVCCVCCVCCVCCvccSizeScaleCAGE CodeDWG NORevSheetofEPYRAMID COMMUNICATIONSThursday, October 23, 200811CHuntington Beach CA 92

Page 3SVR-200 Service ManualSpecificationsTransmitter: VHF UHF 700/800/900 MHzFrequency Range: 150-174 MHz 405-425 MHz (UA)1764-776, 794-806 (MC,MD)

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Page 4SVR-200 Service ManualFunctional DescriptionGenerally, vehicular repeaters are used as mobile extenders in cross-band operation: the link is VHF

Page 5SVR-200 Service ManualIf another unit were to arrive from a different scene and it is still the active priority, there will be two activerepeate

Page 6SVR-200 Service ManualInstallationBefore installing the SVR-200, ensure that the RF and repeater sections are properly aligned per the tuningins

Page 7SVR-200 Service ManualPin 3: Remote enable/disable. Connect to the radio's auxiliary output or a separate switch to remotely enableor disa

Page 8SVR-200 Service ManualAlignment VHFBefore aligning the SVR-200, ensure that the mobile radio is aligned per the manufacturer’s service procedur

Page 9SVR-200 Service ManualFigure 1VHF Receiver1. Receiver front end: Connect a DC voltmeter to TP1 on the SVR-200 main board. Set the service monit