HP 971A - Frequency Measurement Specifications

Diode
Measurement current: +0.5 mA nominal @ 0.6 V Open circuit voltage: < 3.2 Vpeak
Displayed Voltage: 0 V to 2.000 V Input protection: 660 Vrms (sinewave)
Accuracy: ± (1% + 2) Resolution: 1 mV
Temperature (5 k Ω @ 25° C Thermistor probe)
° C ° F
Measurement
Range
-80° to 150° -112° to 302°
Resolution
0.1° 0.2°
Accuracy
1
± 0.5° ± 1.0°
1
Accuracy does not include 5 kΩ Thermistor error
Frequency (AC Coupled)
Frequency Range Resolution Accuracy Maximum Input
5 Hz to 9999 Hz 1 Hz
± (0.02% + 1)
660 Vrms
9.0 kHz to 99.9 kHz 10 Hz 100 Vrms
Input
Attenuator
Input Voltage
Input Impedance
5 Hz to 10 kHz 10 kHz to 100 kHz
4 100 mV to 4 V rms 800 mV to 4 V rms
2.3 MΩ < 50 pF
40 4 V to 40 V rms 4 V to 40 V rms
1.3 MΩ < 50 pF
400 40 V to 400 Vrms 40 V to 100 V rms
1.2 MΩ < 50 pF
Specifications
1-20