TABLE 2 (cont)
Characteristic
Performance Requirement
Supplemental Information
DC Voltmeter (corn)
Common Mode Rejection
At least 100 dB at dc, 80 dB at
60 Hz with 1 kI2 unbalance.
Normal Mode Rejection
At least 30 dB at 60 Hz increasing
20 dB per decade to 2 kHz, when
maximum input signal voltage is
within range X2.
Step Response Time
No more than 1 second plus the range
step time (no more than 1 second / step).
Input Resistance
10 within 2%.
AC Voltmeter
Range
2 V, 20 V, 200 V. 700 V.
Accuracy (+15°C to +35*0
Within 0.5% of reading. ±10 counts
40 Hz to 500 Hz.
Response Time
No more than 5 seconds plus the
range step time (no more than 1
second/step).
Input Impedance
10 MQ within 3% paralleled by at
least 70 pF.
REV B MAR 1980
305 Oparators
41
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