3-22. Audio Amplifier Distortion Test
a. Test Equipment and Materials.
(1) Generator, Signal AN/URM-127.
(6) Voltmeter, Electronic
(2) Spectrum Analyzer TS-723A/U.
(3) Mounting MT-1029/VRC.
(7) Resistor, carbon: 130
ohms, ±10%, 5 watts.
(4) Power Supply PP-2953(*)/U, or equal.
b. Test Connection and Conditions. Connect the equipment as shown in A, figure 319. Turn on the
equipment and allow it to warm up 5 minutes before proceeding,
(2) Short circuit test. No two pins on P2
3-23. CX-4655/GRC, Test Procedure
and P5 should indicate a short circuit (O ohm)
a. Test Equipment and Materials. Use Multi-
when the ME26(*)/U is connected between the
meter ME-26(*)/U as an ohmmeter.
pins on the connector.
b. Test Connections and Conditions. Use the
ME-26(*)/U as instructed in c below.
c. Procedure (fig. 35).
(1) Continuity test. Use the ME-26(*)/U to
test the continuity (O ohm) between each pin of
connector P2 with the corresponding pin on
connector P5, except that between pins F, L, and
R there is no continuity (infinite resistance).