Table 4-15. MODULE TEST SET, SELECTOR MODULE TEST (Cont'd)

TM 11-5895-1141-34

Step

Operation

Normal Indication

b. Turn LOCK/NONLOCK switch to off. Turn

test set P/T KEY and INTERLOCK switches to

OFF. Return 3.2 Ω DUMMY LOAD switch to

3.2 Ω. position.

Set METER SCALE to 0.11 v/-20 dB, INPUT

The amber lamp (DS1002) on selector module

SELECT switch to RCVR AUDIO and OUTPUT

should have a perceptible glow. If not

SELECT switch to OSCILLATOR. Adjust

Perceptible adjust R1003, the threshold

OSCILLATOR LEVEL to 0.042 v.

adjust potentiometer until the lamp just

glows.

Set METER SCALE to 1.1 v/O dB. Adjust

DS1002 should now glow brightly.

OSCILLATOR LEVEL to 0.424 v.

Rapidly operate the INTERNAL/EXTERNAL

The lamp should flash at a corresponding

switch back and forth on the test set.

rate.

Set METER SCALE to 0.35 v/-10 dB. Adjust

OSCILLATOR LEVEL to 0.134 v. Set both

levels of the volume control fully CW.

Meter should read 0 1 dBm.

Set OUTPUT SELECT switch to HEADSET and

METER SCALE to 1.1 v/O dB. Place HEADSET/

SPEAKER switch on selector module to

HEADSET.

4-44