HP 971A - AC Current Specifications; Resistance Specifications

AC Current (Average responding, 40 Hz to 500 Hz, calibrated to display rms)
Range Resolution Accuracy
Input
Resistance
Maximum Input
400 µA
100 nA
± (1.5% + 5)
< 550 Ω
0.5 Arms (fused)
4000 µA1 µA
40 mA
10 µA
< 8 Ω
400 mA
100 µA
10 A 10 mA
< 0.05 Ω
15 Arms (fused)
Resistance
Range Resolution Accuracy Test Current
Maximum
Open Circuit Voltage
400 Ω 100 mΩ± (0.5% + 1)
1
< 0.8 mA < 3.2 V
4.0 kΩ 1 Ω
± (0.5% + 1)
< 80 µA
< 1.1 V
40 kΩ 10 Ω < 10 µA
400 kΩ 100 Ω < 1.1 µA
4.0 MΩ 1 kΩ
< 110 nA
40 MΩ 10 kΩ ± (1.0% + 1)
1
After zero adjust of input leads. Zero adjust range up to 9.9 Ω.
Response time: 400 Ω to 400 kΩ — 2 seconds, 10 MΩ to 40 MΩ — 10 seconds.
Continuity
Measurement Current: 0.8 mA maximum Open circuit voltage: < 3.2 Vpeak
Displayed resistance: 0 Ω to 400 Ω Input protection: 660 Vrms (sinewave)
Alarm: Tone when input < 20 Ω Resolution: 100 m Ω
Specifications
1-19