TB 9-6625-2102-24
(22) If audio analyzer does not indicate within limits shown in table 24,
perform b (5) below.
Table 24. Zero
Audio analyzer indications
(V)
Min
Max
-.100
.100
(23) Set mode switch to CONT.
b. Adjustments
NOTE
All adjustments interact. Repeat performance check and
adjustments as necessary for best in-tolerance indications.
(1) Adjust R347 (fig. 2) for 0 V dc indication on audio analyzer.
(2) Adjust R210, R343 and R226 (fig. 2) for a balance display shown, while
switching MODULATION GENERATOR FUNCTION between triangle (fig. A) and sine
wave (fig. B).
(3) Adjust R324 (fig.2) for oscilloscope indication of >15 V p-p.
(4) Adjust R218 (fig.2) for audio analyzer indication of 0 +20 mV dc.
(5) Adjust R159 (fig.2) for audio analyzer indication of 0 100 mV dc.
17. AC Output and DC Offset
a. Performance Check
(1) Connect TI FUNCTION OUT (50:) to audio analyzer INPUT HIGH
using a 50 : feedthrough termination.
(2) Adjust AMPLITUDE control fully ccw and set main generator FUNCTION
switch to DC.
(3) Adjust DC OFFSET control just out of detent.
(4) Initiate audio analyzer and enable dc low-pass filter.
(5) Audio analyzer will indicate within limit shown in table 25.
Table 25. Voltage Offset
Audio analyzer indications
(<V dc)
-7.2
(6) Adjust DC OFFSET control fully cw.
(7) Audio analyzer will indicate within limit shown in table 26.