AC Voltage HP 972A (Average responding, calibrated to display rms)
Range Resolution
Accuracy
Input Impedance
(nominal)
40 Hz to
50 Hz
50 Hz to
1 kHz
1 kHz to
5 kHz
5 kHz to
20 kHZ
40 mV
10 µV ± (1% + 10)
Not Specified
10 MΩ < 70 pF
400 mV 0.1 mV
± (1% + 3)
Not Specified
4 V 1 mV
± (1% + 3)
± (1.5% + 3) ± (3% + 6)
11 MΩ < 50 pF
40 V 10 mV
± (1% + 2) ± (0.5% + 2)
10 MΩ < 50 pF
400 V 100 mV
1000 V 1 V
± (1% + 2) (40 Hz to 500 Hz)
Not Specified
Common Mode Rejection Ratio (1 kΩ imbalance): > 60 dB @ DC to 60 Hz
Response time: 2 seconds maximum
AC Voltage HP 973A (True rms, calibrated for sinewave)
Range Resolution
Accuracy
Input Impedance
(nominal)
40 Hz to
50 Hz
50 Hz to
1 kHz
1 kHz to
5 kHz
5 kHz to
20 kHZ
40 mV
10 µV
± (1% + 3)
± (1% + 3)
Not Specified
10 MΩ < 70 pF
400 mV 0.1 mV
4 V 1 mV
± (0.7% + 3) ± (1.2% + 4) ± (2% + 15)
11 MΩ < 50 pF
40 V 10 mV
10 MΩ < 50 pF
400 V 100 mV
1000 V 1 V
± (1% + 4) (40 Hz to 500 Hz)
Not Specified
Measurement range:
40 Hz to 1 kHz 40 mV to 400 V range 5% to 100% of range
1000 V range 100 V to 1000 V
1 kHz to 20 kHz 4 V to 400 V range 10% to 100% of range
Response time: <2 seconds on fixed range
Crest factor: <3
Common Mode Rejection Ratio (1 kΩ imbalance): > 60 dB @ DC to 60 Hz
Specifications
1 - 18
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