Fluke 74X Series - DC Current Measurement; Resistance Measurement; Continuity Testing; Frequency Measurement

74X Series
Calibration Manual
4
DC Current Measurement
Range Resolution % of Reading +% of Full Scale
1 Year 2 Year
30 mA
1 µA
0.01% + 0.015% 0.02% + 0.015%
110 mA
10 µA
0.01% + 0.015% 0.02% + 0.015%
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 Resolution % of Reading + ohms
1 Year 2 Year
11Ω 0.001Ω 0.05% + 0.05 0.075% + 0.05
110Ω 0.01Ω 0.05% + 0.05 0.075% + 0.05
1.1 kΩ 0.1Ω 0.05% + 0.5 0.075% + 0.5
11 kΩ 1Ω 0.1% + 10 0.1% + 10
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
Tone Resistance
Continuous tone
May or may not get tone
No tone
<25Ω
25 to 400Ω
>400Ω
Frequency Measurement
Ranges Accuracy
1 Year 2 Year
1.00 Hz to 109.99 Hz 0.05 Hz 0.05 Hz
110.0 Hz to 1099.9 Hz 0.5 Hz 0.5 Hz
1.100 kHz to 10.999 kHz 0.005 kHz 0.005 kHz
11.00 kHz to 50.00 kHz 0.05 kHz 0.05 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.