TEST PROCEDURE 076 AMPLIFIER, AUDIO FREQUENCY AM-1780/VRC

SB 740-91-01

TEST PROCEDURE 076

AMPLIFIER, AUDIO FREQUENCY AM-1780/VRC

1. General.

This procedure provides a description of special test equipment, fixturing, cabling, instrumentation and instruction for

performing the inspections and evaluation applicable to the Amplifier, Audio Frequency AM-1780/VRC.

2. Test Equipment/Test Setup.

All tests are to be performed under the following environmental conditions, unless otherwise stated:

Temperature:

230 IOOC (730 180F)

Relative Humidity: 80 percent maximum.

All test equipment is to be energized for a least 30 minutes prior to utilization, unless otherwise specified in operating

manual for the test equipment.

Table B-4 lists the test equipment. Figure B-16 illustrates the test setup.

Table B-4. Test Equipment for Procedure 076 (Amplifier, Audio Frequency)

Item

Technical Manual (Ref.)

Signal Generator AN/URM-127

TM11-6625-683-15

Spectrum Analyzer TS-723/U

TM11-6625-255-14

Voltmeter, Electronic ME-30/U

TM11-6625-320-12

Power Supply PP-1104/U

TM11-6130-246-12

Resistor, 100 ohms, 10 percent, 0.5W

SSS-013-003-3 Power Cable

SSS-013-003-4 Test Cable No. 2 (require 3 each)

SSS-013-004-1 Test Cable No. 1

SSS-013-004-2 Test Cable No. 3

3. Inspection Requirements.

The following mechanical-visual inspections are applicable to the audio frequency amplifier AM-1780/VRC units, and

assemblies and further define the coded inspection criteria given in appendix A.

(1) Inspect equipment covers and front panels for condition of finish and panel markings.

(2) Inspect for dents, punctures, or warped areas.

(3) Inspect spring lock fasteners and receptacles.

(4) Inspect external surfaces for loose or missing screws or washers.

(5) Inspect receptacles for condition of pins, contacts, mounting, and for foreign particles.

B-65