Dc Current Measurement; Resistance Measurement; Continuity Testing; Frequency Measurement - Fluke 74X Series Calibration Manual

74X Series
Calibration Manual

DC Current Measurement

Range
30 mA
110 mA
Temperature Coefficient: (0.001% of rdg. + 0.002% f.s.)/ °C in the ranges -10 to 18 °C and 28 to 50 °C
Common Mode Error: 0.01% f.s./(Common Mode Volt)
Maximum Input Voltage: 30V dc

Resistance Measurement

Range
11Ω
110Ω
1.1 kΩ
11 kΩ
Temperature Coefficient: (0.01% f.s. + 2 mΩ) / °C in the ranges -10 to 18 °C and 28 to 50 °C
Common Mode Error: 0.005% f.s/(Common Mode Volt)
Maximum Input Voltage: 30V dc

Continuity Testing

Frequency Measurement

1.00 Hz to 109.99 Hz
110.0 Hz to 1099.9 Hz
1.100 kHz to 10.999 kHz
11.00 kHz to 50.00 kHz
Minimum amplitude for frequency measurement (square wave):
<1 kHz: 300 mV p-p
1 kHz to 30 kHz: 1.4 V p-p
>30 kHz: 2.8V p-p
Maximum Input:
<1 kHz: 300V rms
>1 kHz: 30V rms
Input Impedance: 5 MΩ
For frequency measurement less than 109.99 Hz, specifications apply for signals with a slew rate greater
than 5 volt/millisecond.
4
Resolution
1 µA
10 µA
Resolution
0.001Ω
0.01Ω
0.1Ω
1Ω
Tone
Continuous tone
May or may not get tone
No tone
Ranges
% of Reading +% of Full Scale
1 Year
0.01% + 0.015%
0.01% + 0.015%
% of Reading + ohms
1 Year
0.05% + 0.05
0.05% + 0.05
0.05% + 0.5
0.1% + 10
Resistance
<25Ω
25 to 400Ω
>400Ω
Accuracy
1 Year
0.05 Hz
0.5 Hz
0.005 kHz
0.05 kHz
2 Year
0.02% + 0.015%
0.02% + 0.015%
2 Year
0.075% + 0.05
0.075% + 0.05
0.075% + 0.5
0.1% + 10
2 Year
0.05 Hz
0.5 Hz
0.005 kHz
0.05 kHz