TB 9-6625-1976-24
(3) Manually lock ac measurement standard to 700 V range.
(4) Position controls as listed in (a) through (e) below:
FREQUENCY RANGE switch to 10 kHz.
(a)
FREQUENCY dials to 1.000 K.
(b)
VOLTAGE RANGE switch to 1000 V.
(c)
VOLTAGE dials to 500.000 V.
(d)
MODE switch to OPER.
(e)
(5) Measure TI output. If ac measurement standard does not indicate between
499.78 and 500.22 V, perform b (1) below.
(6) Repeat technique of (4) through (5) above using frequencies listed in table 7.
Table 7. High Voltage Accuracy
Test instrument
AC Measurement
frequency
std indications
Min
Max
30
Hz
499.78
500.22
400
Hz
499.78
500.22
30
kHz
499.55
500.45
50
kHz
499.55
500.45
(7) Set TI for a 500 V, 100 kHz output. If ac measurement standard does not
indicate between 499.40 and 500.60 V, perform b (2) below.
b. Adjustments
(1) Adjust R9, LF GAIN (fig. 3) for TI measured output of 500 Vac (R).
(2) Adjust C14, HF GAIN (fig. 3) for TI measured output of 500 Vac (R).
Figure 3. Precision power amplifier, Fluke, model 5215A - adjustment locations.
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