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789/787B
Users Manual
42
Frequency Counter Accuracy
Range Resolution Accuracy, ±(% of Reading + Counts)
199.99 Hz 0.01 Hz 0.005 % + 1
1999.9 Hz 0.1 Hz 0.005 % + 1
19.999 kHz 0.001 kHz 0.005 % + 1
Display updates 3 times/second at > 10 Hz
Frequency Counter Sensitivity
Input Range
Minimum Sensitivity (rms Sinewave)
5 Hz to 5 kHz*
AC
DC
(approximate trigger level 5 % of full scale)
400 mV 150 mV (50 Hz to 5 kHz) 150 mV
4 V 1 V 1 V
40 V 4 V 4 V
400 V 40 V 40 V
1000 V 400 V 400 V
*Usable 0.5 Hz to 20 kHz with reduced sensitivity.
10
6
VHz max
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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