AUDIO POWER OUTPUT AND DISTORTION TEST.

TM 11-5820-670-30

2-5. AUDIO POWER OUTPUT AND DISTORTION TEST.

PURPOSE

This test checks the receiver section of the radio set. Two signal generators simulate a frequency

modulated signal. The rt demodulates the signal and outputs audio power containing a percentage of

distortion, which is measured by a spectrum analyzer.

TEST EQUIPMENT AND MATERIALS

Maintenance Kit MK-1035/ARC-131

Signal Generator AN/URM-103

Signal Generator AN/URM-127

Spectrum Analyzer TS-723A/U

Power Supply PP-2953/U

All cables are part of MK-1035/ARC

TEST SETUP

Connect equipment as shown in test setup diagram. Place the +28 VDC ON-OFF switch on

TS-2575/ARC-131 to ON and allow all equipment 5 minutes for warmup.

EL1AT141

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