AC + DC Voltage HP 973A (True rms, computed from acV, dcV)
Range Resolution
Accuracy
Input
Impedance
(nominal)
DC, 40 Hz to
1 kHz
DC, 1 kHz to
5 kHz
DC, 5 kHz to
20 kHZ
4 V 1 mV
± (1% + 4) ± (1.5% + 6) ± (3% + 18)
11 MΩ < 50 pF
40 V 10 mV
10 MΩ < 50 pF
400 V 100 mV
1000 V 1 V
± (1% + 6)
DC, to 500 Hz
Not Specified
Measurement range:
DC, 40 Hz to 1 kHz 4 V to 400 V range 5% to 100% of range
1000 V range 200 V to 1000 V
DC, 1 kHz to 20 kHz 4 V to 400 V range 10% to 100% of range
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 Resolution Accuracy Input Resistance Maximum Input
400 µA
100 nA
± (0.5% + 2)
< 550 Ω
± 0.5 A (fused)
4000 µA1 µA
± (0.8% + 2)
40 mA
10 µA
< 8 Ω
400 mA
100 µA
± (1.0% + 2)
10 A 10 mA
< 0.05 Ω ± 15 A (fused)
Specifications
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