Resistance; Continuity; Diode; Frequency (Ac Coupled) - HP 974A User Manual

Resistance

Range Resolution
500 Ω
10 mΩ
5.0 kΩ 100 mΩ
50 kΩ
500 kΩ
100 Ω
5.0 MΩ
50 MΩ
After zero adjust of input leads. Zero adjust range up to 0.99 Ω.
1
Response time: 500 Ω to 500 kΩ — < 2 seconds, 5 MΩ to 50 MΩ — < 10 seconds.

Continuity

Measurement Current: 0.8 mA maximum
Displayed resistance: 0 Ω to 499.99 Ω
Alarm: Tone when input < 100 Ω ± 50 Ω

Diode

Measurement current: +1.0 mA nominal @ 0.6 V Open circuit voltage: < 5.5 Vpeak
Displayed Voltage: 0 V to 4.999 V
Accuracy: ± (1% + 2)

Frequency (AC Coupled)

Frequency Range
10 Hz to 99.99 Hz
90 Hz to 999.0 Hz
900 Hz to 9.999 Hz
9.00 kHz to 99.99 kHz
90 kHz to 200 kHz
Accuracy
± (0.06% + 2)
± (0.06% + 2)
1Ω
10 Ω
± (0.5% + 1)
± (1.0% + 2)
1 kΩ
Open circuit voltage: < 5.5 Vpeak
Input protection: 500 Vrms (sinewave)
Resolution: 10 mΩ (<100 mSec response time)
Input protection: 500 Vrms (sinewave)
Resolution: 100 µV
Resolution
0.01 Hz
0.1 Hz
1 Hz
10 Hz
100 Hz
Test Current Open Circuit
1
< 800 µA
< 80 µA
< 15 µA
< 1.5 µA
< 150 nA
Accuracy Input Voltage (rms)
0.45 mV to 500 V
± (0.05% + 1)
.7 V to 100 V
1.5 V to 100 V
Specifications
Max
Voltage
< 5.5 V
< 2.2 V
1-19