Specifications; General; Dc Voltage - HP 972a User Manual

Specifications

Calibration period: one year minimum. Specifications apply at 23° C ± 5° C, < 80% RH
Accuracy = ±(% of reading + number of digits)
Temperature Coefficient = Accuracy X 0.1/° C (-10° C to 18° C; 28° C to 55° C)

General

Do not expose product to moisture or rain. Do not use product in flammable atmosphere.
Operating Temperature: -10° to 50°C.
Humidity: 0°C to 40°C / 80% RH max, 40°C to 50°C / 70% RH max (no condensation).
Storage Temperature: -25° to 60°C / 70% RH max (no condensation).
Display reading rate:
ACV, DCV, Diode, Continuity:
Frequency
Capacitance
AC + DC
Bargraph reading rate:
Battery life: Approximately 600 hours

DC Voltage

Range
40 mV
400 mV
4 V
40 V
400 V
1000 V
Normal Mode Rejection Ratio: > 60 dB @ 50 or 60 Hz
Effective Common Mode Rejection Ratio ( 1 kΩ imbalance): > 120 dB @ 50 or 60 Hz
Approximately 2.3/second
Approximately 1/second
Approximately 0.03 to 2/second
Approximately 0.5 to 1/second
Approximately 23/second
972A
Resolution
Accuracy
10 µV ± (0.3% + 5)
100 µV
1 mV
± (0.2% + 1)
10 mV
100 mV
1 V
973A
Input Resistance
± (0.3% + 5)
10 MΩ (nominal)
11 MΩ (nominal)
± (0.1% + 1)
10 MΩ (nominal)
± (0.2% + 1)
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