TB-9-6625-1968-35
Test instrument
Frequency counter indications
FREQUENCY
RANGE Hz
dial settings
pushbutton settings
Min
Max
6
.1
1504
ms
1869
ms
13
.1
733
ms
810
ms
1
1
606
ms
2857
ms
6
1
150
ms
187
ms
13
1
73
ms
81
ms
1
10
61
ms
286
ms
6
10
15
ms
18.7
ms
13
10
7.3
ms
8.1
ms
1
100
6.06
ms
28.6
ms
6
100
1.5
ms
1.87
ms
13
100
1235
Hz
1365
Hz
1
1k
350
Hz
1650
Hz
6
1k
5.350
kHz
6.650
kHz
13
1k
12.350
kHz
13.650
kHz
1
10k
3.5
kHz
16.5
kHz
6
10k
53.5
kHz
66.5
kHz
13
10k
123.5
kHz
136.5
kHz
1
100k
35
kHz
165
kHz
6
100k
535
kHz
665
kHz
13
100k
1.235
MHz
1.365
MHz
1
1M
.350
MHz
1.65
MHz
6
1M
5.35
MHz
6.65
MHz
13
1M
12.35
MHz
13.65
MHz
b. Adjustments
(1) Press RANGE Hz 1k pushbutton and adjust FREQUENCY dial to 10. Adjust
A2R102 (fig. 1) for a 10.0 kHz frequency counter indication (R).
(2) Adjust FREQUENCY dial for a frequency counter indication of 1.0 kHz 50 Hz.
If FREQUENCY dial is not on 1, loosen dial and adjust to 1.
(3) Adjust FREQUENCY dial to 10, and if necessary, adjust A2R102 (fig. 1) for a
frequency counter indication of 10 kHz 30 Hz.
(4) Repeat (1) through (3) above until all indications remain within tolerance.
(5) Press RANGE Hz 100k pushbutton and adjust FREQUENCY dial to 10.
Adjust A2C205 (fig. 1) for a frequency counter indication of 1 MHz 3 kHz (R).
(6) Press RANGE Hz 1k pushbutton and adjust FREQUENCY dial to 5. Note
frequency counter indication and calculate percentage of deviation from 5 kHz. Record
percentage of deviation.
(7) Press RANGE Hz 1M pushbutton. Adjust A2C217 for a frequency counter
indication of 5 MHz percentage of deviation recorded in (6) above (R).
5