Test Equipment and Test Facilities Required

11-5820-401-35-1/NAVELEX

0967-432-3020

for conformance with the depot overhaul

3-10. Performance Check and Troubleshooting

standards.

Microphone Amplifier Module A80

Refer to figure 3-4 for schematic diagram of A80

and to figures 3-6 and 3-7 for location of parts.

3-9. Test Equipment and Test Facilities

The following procedures are performed on the

Required

A80 disconnected from the C-2299/VRC:

a. Test Equipment.

a. Test Setup. The following test setup will be

(1) Multimeter TS-353B/U.

used to check the performance of the A80 module

(2) Power Supply PP-1104/G.

(b below).

(3) Voltmeter, Electronic ME-30(*)/U,

(1) Connect the positive terminal of PP-

(ME-30(*)/U represents all models of the volt-

1104/G to terminal 3 and the negative terminal to

meter.)

terminal 1 (ground) of A80.

(4) Generator, Signal AN/URM-127.

(2) Connect a 150-ohm resistor to the output

of AN/URM-127. Connect the output of AN/

(5) Spectrum Analyzer TS-723B/U.

URM-127 and the input of ME-30(*)/U to ter-

(6) Oscilloscope AN/USM-281A.

minals 2 and 1 of A80.

b. Test Facilities.

(3) Connect a 150-ohm resistor to output

(1) Test cable No. 1 (2 each), fabricated in

terminals 4 and 1 of A80. Connect the AN/USM-

accordance with details in figure 3-5.

281A to the TS-723B/U OSCILLOSCOPE ter-

minals.

(2) Test cable No. 2 (2 each), fabricated in

accordance with details in figure 3-5.

b. Performance Check. Connect the test equip-

ment to A80 as explained in a above.

(3) Resistor, 150 ohms, 2 watts (3 each).

Figure 3-5. Fabrication details for test cables No. 1 and 2.