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TM 55-4920-383-13&P
adjust precision variable capacitor No. 3 to obtain required reading of digital display (7);
then check that precision capacitor No. 3 setting is between minimum and maximum values
listed in table 4-2.
Table 4-1. Probe Simulator Checkout
Test
1
2
3
4
5
6
7
8
9
10
11
Simulators-PROBE -switch settings
0-7000 pF (22)
0
0
0
0
1000
2000
3000
4000
5000
6000
7000
0-800 pF (23)
200
400
600
800
0
0
0
0
0
0
0
CAPACITANCE
RANGE switch (6)
settings (pF)
1000
1000
1000
1000
4000
4000
4000
8000
8000
8000
8000
Digital Display (7) reading
Minimum
(pF)
277.5
457.5
636.5
815.5
1070.
2050.
3025.
4000.
4975.
5950.
6925.
Maximum
(pF)
322.5
542.5
763.5
984.5
1130.
2150.
3175.
4200.
5225.
6250.
7275.
(3) Substitute precision variable capacitor No. 2 for No. 3 (see table 1-3) and
set CAPACITANCE RANGE switch (6) to 1000 pF. Adjust precision variable capacitor No. 2
until digital display (7) reads 555.5 pF.
Check that precision variable capacitor No. 2
setting is between 553.0 and 558.0 pF.
(4) Adjust precision variable capacitor No. 2 until digital display (7) reads 777.0 pF.
Check that precision variable capacitor No. 2 setting is between 773.5 and 780.5 pF.
4-6
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