TB 9-6625-2266-35
9. Ac Voltage
a. Performance Check
(1) Press DC/AC pushbutton to AC (in).
(2) Press TI 200 mV range pushbutton.
(3) Set calibrator for an output amplitude of 190 mV and an output frequency of 45
Hz. If TI does not indicate within limits specified in first row of table 4, perform b below.
(4) Repeat technique of (2) and (3) above using settings listed in table 4 below. If
TI does not indicate within limits specified in table 4, perform b below.
Table 4. Ac Voltage
Calibrator
Test instrument
Output
Output
Indication limits
amplitude
Range
Min
Max
190 mV
45 Hz
200 mV
188.4
191.6
190 mV
1.0 kHz
200 mV
188.4
191.6
190 mV
2.0 kHz
200 mV
186.9
193.1
190 mV
5.0 kHz
200 mV
180.0
199.9
1.9 V
45 Hz
2V
1.884
1.916
1.9 V
1.0 kHz
2V
1.884
1.916
1.9 V
2.0 kHz
2V
1.869
1.931
1.9 V
5.0 kHz
2V
1.800
1.999
19 V
45 Hz
20 V
18.84
19.16
19 V
1.0 kHz
20 V
18.84
19.16
19 V
2.0 kHz
20 V
18.69
19.31
19 V
5.0 kHz
20 V
18.00
19.99
190 V
45 Hz
200 V
188.4
191.6
190 V
1.0 kHz
200 V
188.4
191.6
190 V
2.0 kHz
200 V
186.9
193.1
750 V
45 Hz
750 V
740
760
750 V
1.0 kHz
750 V
740
760
b. Adjustments
(1) Set TI range to 200 mV and calibrator for a 190 mV, 45 Hz output. Adjust AC
CAL R4 (fig. 1) for a TI indication of 190.0(R).
NOTE
Perform (2) below for model 8020A only.
(2) Set TI range to 2 and calibrator for a 1.9 V, 2 kHz output. Adjust HF ADJ C1
(8020A) (fig. 1) for a TI indication of 1.900 (R).
10. Dc Current
a. Performance Check
(1) Connect TI mA input to calibrator OUTPUT HI and TI COM input to calibrator
OUTPUT LO.
(2) Press DC/AC pushbutton to DC (out).
(3) Press TI 2 mA range pushbutton.