TB 9-6695-261-35
Test instrument
Frequency counter indications (Hz)
FREQUENCY Hz
MULTIPLIER
Min
Max
pushbuttons
pushbuttons
1-0-0
.1
99 ms
101 ms
1-0-0
1
9.9 ms
10.1 ms
1-0-0
10
990
1010
1-0-0
100
9900
10,100
1-1-1
100
10,989
11,211
2-2-2
100
21,978
22,422
3-3-3
100
32,967
33,633
4-4-4
100
43,956
44,844
5-5-5
100
54,945
56,055
6-6-6
100
65,934
67,266
7-7-7
100
76,923
78,477
8-8-8
100
87,912
89,688
9-9-9
100
98,901
100,899
b. Adjustments
(1) Press FREQUENCY
Hz
pushbuttons
to
indicate
1-0-0
and
press
MULTIPLIER 1000 pushbutton.
(2) Adjust C365 (fig. 1) until frequency counter indicates 100,000 Hz (R).
(3) Position FREQUENCY Hz pushbuttons to indicate 4-0-0.
(4) Adjust C204 (fig. 1) until frequency counter indicates 400,000 Hz (R).
(5) Position FREQUENCY Hz pushbuttons to indicate 9-9-9.
(6) Adjust R215B (fig. 1) until frequency counter indicates 999,000 Hz (R).
a. Performance Check
∼ OUTPUT to audio analyzer using 50Ω termination.
(1) Connect
(2) Set RMS VOLTS switch to 9-10 and vernier control fully cw.
(3) Set FLOATING/CHASSIS switch to FLOATING.
(4) Measure distortion at frequencies listed in table 4. If distortion analyzer does
not indicate within limits specified, perform b below.