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RECEIVER
PERFORMANCE TEST

TM-55-1930-209-14P-12 Water Purification Barges (NSN 1930-01-234-2165) Lighting System Manual
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TM 55-1930-209-14&P-12 Maintenance on the transceiver should be performed in the following sequence. 1. Performance Test - Conducted to check the overall performance of the transceiver.  Should be performed prior to the sale/installation of the radio and prior to any corrective maintenance. 2. Alignment/Adjustment   -   Conducted   if   the   transceiver   fails   the   Performance   Test   and/or   a   critical   electrical component  has  been  replaced  in  the  transceiver.    In  addition,  SCC  recommends  that  the  radio  be  returned whenever maintenance is performed on it. 3. Troubleshooting - Isolates a fault in the transceiver. Remove the covers from the radio to obtain access to the test and adjustment points.  Connect the radio to a suitable DC source (+13.8 VDC ±20%).  Test equipment hookup for alignment procedure is illustrated in Figures 6 and 9. Alignment reference points locations are illustrated in Figures 7 and 8. TEST EQUIPMENT The  following  maintenance  procedure  is  supplied  assuming  the  repair  technician  has  access  to  the  following  test equipment, or its equivalent. EQUIPMENT MODEL FM Communications Monitor Cushman CE-6A RF Wattmeter w/50 Ohm Load Bird 6154 Tone Generator Cushman CE-11 Voltmeter Hewlett Packard 427A RF Probe Hewlett Packard 11096B Frequency Counter Hewlett Packard 5314A Scope Hewlett Packard 1220A DC Microammeter Simpson 374 Power Supply Adjustable 9.5 V to 17 V 25 Amp. Optional (Recommended but not required) RF Spectrum Analyzer Hewlett Packard 8558B w/Display Digital Voltmeter Danameter 2000 Signal Generator Wavetech 3000 Sinadder Helper Instruments PERFORMANCE TEST I. Transmitter 1. Connect a wattmeter w/50 ohm dummy load to the antenna receptacle. 2. Set the power mode switch to the high position. 3. Key the transmitter by depressing the microphone PTT switch. 4. Verify that the power output is 25 watts minimum on channels 06, 16, and 26. 5. Set the power mode switch to the low position. 12







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