TB 9-6625-2020-35
Table 6. Ac Voltage
Test Instrument
Calibrator output settings
Test instrument
range/function switch
indications
settings (AC VOLTS)
Voltage
Min
Max
200 mV
180
mV
20 Hz
178.1
mV
181.9
mV
200 mV
180
mV
1 kHz
179.0
mV
181.0
mV
200 mV
180
mV
20 kHz
178.1
mV
181.9
mV
2
1.8
V
20 Hz
1.781 V
1.819 V
2
1.8
V
1 kHz
1.790 V
1.810 V
2
1.8
V
20 kHz
1.781 V
1.819 V
20
18
V
20 Hz
17.81 V
18.19
V
20
18
V
1 kHz
17.90 V
18.10
V
20
18
V
20 kHz
17.81 V
18.19
V
200
180
V
20 Hz
178.1
V
181.9
V
200
180
V
1 kHz
179.00 V
181.0
V
200
180
V
20 kHz
178.10 V
181.9
V
500
490
V
50 Hz
487
V
493
V
500
490
V
20 kHz
484
V
496
V
b. Adjustments
(1) Set calibrator to STANDBY.
(2) Set TI range/function switch to 2 AC VOLTS.
(3) Set calibrator for a 1.8 V, 1 kHz output. Adjust R180 (fig. 1) until TI indicates
1.800 V (R).
(4) Set calibrator for a 180 mV, 1 kHz output.
(5) Set TI range/function switch to 200mV AC VOLTS. Adjust R175 (fig. 1) until
TI indicates 180.0 mV (R).
(6) Set TI range/function switch to 20 AC VOLTS.
(7) Set calibrator for a 18 V, 1 kHz output. Adjust C150 (fig. 1) until TI indicates
18.00 V (R).
(8) Set TI range/function switch to 500 AC VOLTS.
(9) Set calibrator for a 500 V, 100 Hz output.
Adjust R155 (fig. 1) until TI
indicates 500 V (R).
(10) Set calibrator for a 500 V, 10 kHz output.
Adjust C155 (fig. 1) until TI
indicates 500 V (R).
(11) Repeat (1) through (10) above as necessary for best overall in-tolerance
frequency response.
12. Ac Decibels
a. Performance Check
(1) Position dBm/dBV jumper (fig. 1) in dBm position.
