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28 II Ex
Users Manual
52
Diode
Range Resolution Accuracy
2.000 V 0.001 V
±(2.0 % + 1)
Frequency
Range Resolution Accuracy
199.99 Hz 0.01 Hz
±(0.005 % + 1)
[1]
1999.9 Hz 0.1 Hz
19.999 kHz 0.001 kHz
199.99 kHz 0.01 kHz
>200 kHz 0.1 kHz Unspecified
[1] From 0.5 Hz to 200 kHz and for pulse widths > 2 μs.
Frequency Counter Sensitivity and Trigger Levels
Input Range
Minimum Sensitivity (RMS Sine Wave)
Approximate Trigger Level
(DC Voltage Function)
5 Hz – 20 kHz 0.5 Hz – 200 kHz
600 mV dc 70 mV (to 400 Hz) 70 mV (to 400 Hz) 40 mV
600 mV ac 150 mV 150 mV -
6 V 0.3 V 0.7 V 1.7 V
60 V 3 V
7 V (≤140 kHz)
4 V
600 V 30 V
70 V (≤14.0 kHz)
40 V
1000 V 100 V
200 V (≤1.4 kHz)
100 V
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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