TB 9-6695-288-35
a. Performance Check
(1) Connect OSCILLATOR OUTPUT to multimeter using cable and 600Ω
feedthrough termination.
(2) Position controls as listed in (a) through (c) below:
(a) FREQUENCY switches to 1.0 x 1K.
(b) OSCILLATOR FREQUENCY VERNIER control to CAL.
(c) OSCILLATOR LEVEL switch to 3 V and vernier control fully cw.
(3) If multimeter does not indicate greater than 3 V ac, perform b below.
(4) Adjust OSCILLATOR LEVEL vernier control for a reading of 3.00 V ac on
multimeter.
(5) Set FREQUENCY switches to settings listed in table 5. Multimeter indications
will be within values listed for each frequency.
Test instrument
Multimeter indications (V Ac)
FREQUENCY switch
Min
Max
settings (Hz)
2.0 x 10
2.96
3.04
1.0 x 100
2.96
3.04
1.0 x 10K
2.96
3.04
2.0 x 10K
2.96
3.04
10.0 x 10K
2.93
3.07
b. Adjustments
(1) Connect multimeter between test points A1TP8 (fig. 1) and shield of assembly
A1 (fig. 1), using leads.
(2) Position controls as listed in (a) through (c) below:
(a) FREQUENCY switches to 1.0 x 10.
(b) OSCILLATOR LEVEL switch to 3 V.
(c) OSCILLATOR LEVEL vernier control fully cw.
between -0.3 and -0.5 V dc (R).
(4) Change FREQUENCY multiplier control to each range and verify that voltage
level at A1TP8 remains negative.
(5) Repeat a(1) through (5).
10 CHANGE 1
