TB 9-6625-1356-35
(c) (Model 652A (SG-763/U)) OUTPUT MONITOR switch to NORMAL.
(3) Adjust AMPLITUDE controls for a 3.0 V indication on TI meter. If audio
analyzer does not indicate less than 1 percent distortion, perform b below.
(4) Repeat (3) above at FREQUENCY RANGE switch and FREQUENCY dial
settings listed in table 7. Audio analyzer will indicate less than 1 percent distortion.
Test instrument
FREQUENCY dial settings
X10
5
X10
10
X100
1
X100
10
X1K
10
X10K
1
X10K
2
X100K
1
DELETED
DELETED
b. Adjustments.
Adjust A2R17 (fig. 1) for minimum
distortion indication on
audio
analyzer (R).
13. Output Attenuator Accuracy
a. Performance Check
(1) Adjust AMPLITUDE controls for minimum output.
Figure 3. Output attenuator -
equipment setup.