TB 9-6625-2361-35
Test
Test instrument indications
TI
instrument
Calibrator
(V ac)
Adjustments
range
Voltage
Min
Max
settings
(V ac)
(Hz)
11
1
10 Hz
0.978
1.022
---
1
1
30 Hz
0.989
1.011
---
12
1
500 Hz
0.997
1.003
b(13)
1
1
20 k
0.994
1.006
---
1
1
50 k
0.979
1.021
b(14)
1
1
80 k
0.965
1.035
---
1
1
200 k
0.947
1.053
---
1
1
1M
0.9105
1.0895
b(15)
10
10
1M
9.21
10.79
b(16)
10
10
200 k
9.52
10.48
---
10
10
80 k
9.68
10.32
---
10
10
50 k
9.82
10.18
b(17)
10
10
20 k
9.944
10.056
10
10
500 Hz
9.972
10.028
b(18)
101
10
30 Hz
9.892
10.108
---
10
10
10 Hz
9.784
10.216
---
100
100
10 Hz
97.872
102.128
---
100
100
30 Hz
98.936
101.064
---
1002
100
500 Hz
99.736
100.264
b(19)
100
100
20 k
99.472
100.528
---
100
100
50 k
98.44
101.56
b(20)
100
100
80 k
97.04
102.96
---
100
100
200 k
95.6
104.4
---
1000
1000
500 Hz
996.4
1003.6
b(21)
1000
1000
20 k
992.8
1007.2
---
1000
500
50 k
491.0
509.0
b(22)
1000
300
80 k
288.0
312.0
---
1000
200
200 k
190.0
210.0
---
1Set
slow filter on.
2Set
slow filter off.
b. Adjustments
NOTE
All adjustments are located on the ac/dc converter board.
(1) Connect multimeter INPUT HI to TI TP5 and LO to TI TP1.
(2) Select the 10 V manual range and short TI INPUT HI and LO.
(3) Adjust R12 RANGE ZERO for a 0 30 V multimeter indication. Remove short.
(4) Set calibrator for a -200 mV dc output. Record absolute value of TI indication.
(5) Set calibrator for a +200 mV dc output. Record absolute value of TI indication.
(6) Adjust R42 BALANCE ZERO until the difference between the absolute values
recorded in (4) and (5) above is less than 10 digits.
(7) Repeat (4) through (6) above as necessary.
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