TRANSMITTER SIGNAL PLUS NOISE-TO-NOISE RATIO TEST.

TM 11-5820-670-30

2-15. TRANSMITTER SIGNAL PLUS NOISE-TO-NOISE RATIO TEST.

PURPOSE

This test checks the transmitted power to noise ratio. Transmitted noise must be 35 db below transmit-

ted power.

TEST EQUIPMENT AND MATERIALS

Maintenance Kit MK-1035/ARC-131

Modulation Meter ME-57/U

Spectrum Analyzer TS-723A/U

Signal Generator AN/URM-127

Electronic Voltmeter ME-30(E)/U

Power Supply PP-2953/U

All cobles are part of MK-1035/ARC

TEST SETUP

Connect equipment as shown in test setup diagram. Turn on all equipment and allow at least 5 minutes

for warmup.

EL1AT150

2-30