TB 9-6625-1966-24
(4) Adjust CHANNEL A AMPLITUDE control to midrange and repeat (1) through
(3) above for CHANNEL B.
(5) Adjust CHANNEL B AMPLITUDE control to midrange.
b. Adjustments. No adjustments can be made.
13. Square Wave Response
a. Performance Check
(1) Connect oscilloscope to CHANNEL A OUTPUT, using probe.
(2) Set RANGE switch to X10K and function switch to SQUARE.
(3) Measure rise and fall times and sag. If rise and fall times are not less than
250 ns and sag is not less than 1 percent, perform b below.
(4) Adjust CHANNEL A AMPLITUDE control fully ccw. If overshoot is not less
than 5 percent, perform b below.
(5) Repeat (1) through (4) above for CHANNEL B.
b. Adjustments
(1) For CHANNEL A, adjust A15C2 or A5C2 (fig. 2) for best intolerance square
wave (R).
(2) For CHANNEL B, adjust A16C2 or A6C2 (fig. 2) for best intolerance square
wave (R).
14. Sine Wave Response
a. Performance Check
(1) Connect multimeter to CHANNEL A OUTPUT.
(2) Set RANGE switch to X100 and function switch to SINE.
(3) Adjust CHANNEL A AMPLITUDE control for a 5 V indication on multimeter.
(4) Adjust FREQUENCY dial in turn to 1, 5, and 10. Multimeter will indicate
between 4.95 and 5.05 V at each setting.
(5) Repeat technique of (4) above at RANGE and FREQUENCY settings listed in
table 5. Multimeter will indicate within limits specified.
Table 5. Sine Wave Response
Test instrument
Multimeter indications (V Ac)
FREQUENCY dial
RANGE switch settings
Min
Max
settings
X10
2
4.95
5.05
X10
5
4.95
5.05
X10
10
4.95
5.05
X1K
1
4.95
5.05
