Fluke 744 Fluke 744 Users Manual - Page 118

Continuity Testing, Frequency Measurement, Minimum Amplitude for Frequency Measurement square wave

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744 Users Manual Continuity Testing Tone Continuous tone May or may not get tone No tone Frequency Measurement Resistance 400 Ω Ranges 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 1 Year 0.05 Hz 0.5 Hz 0.005 kHz 0.05 kHz Accuracy 2 Year 0.05 Hz 0.5 Hz 0.005 kHz 0.05 kHz Minimum Amplitude for Frequency Measurement (square wave): 30 kHz: 2.8 V p-p Maximum input: 1 kHz: 30 V 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. 108

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744
Users Manual
108
Continuity Testing
Tone
Resistance
Continuous tone
May or may not get tone
No tone
<25
Ω
25 to 400
Ω
>400
Ω
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:
4 mV p-p
>30 kHz:
2.8 V p-p
Maximum input:
<1 kHz:
300 V rms
>1 kHz:
30 V rms
Input Impedance
: 5 M
Ω
For frequency measurement less than 109.99 Hz, specifications apply for signals with a slew rate greater than 5
volt/millisecond.