Ac + Dc Voltage Hp 973A; Dc Current - HP 972a User Manual

AC + DC Voltage HP 973A (True rms, computed from acV, dcV)
Range Resolution
4 V 1 mV
40 V 10 mV
400 V 100 mV
1000 V 1 V
Measurement range:
DC, 40 Hz to 1 kHz
DC, 1 kHz to 20 kHz
Response time: < 5 seconds on fixed range
Crest factor: <3
Common Mode Rejection Ratio (1 kΩ imbalance): > 60 dB @ DC to 60 Hz

DC Current

Range
400 µA
4000 µA
40 mA
400 mA
10 A
DC, 40 Hz to
1 kHz
± (1% + 4)
± (1% + 6)
DC, to 500 Hz
4 V to 400 V range
1000 V range
4 V to 400 V range
Resolution Accuracy
± (0.5% + 2)
100 nA
1 µA
± (0.8% + 2)
10 µA
100 µA
± (1.0% + 2)
10 mA
Accuracy
DC, 1 kHz to DC, 5 kHz to
5 kHz 20 kHZ
± (1.5% + 6) ± (3% + 18)
Not Specified
5% to 100% of range
200 V to 1000 V
10% to 100% of range
Input Resistance
< 550 Ω
< 8 Ω
< 0.05 Ω
Specifications
Input
Impedance
(nominal)
11 MΩ < 50 pF
10 MΩ < 50 pF
Maximum Input
± 0.5 A (fused)
± 15 A (fused)
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