Frequency Counter Specifications - Fluke 289 User Manual

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Users Manual

Frequency Counter Specifications

Function
Frequency
(0.5 Hz to 999.99 kHz, pulse
width >0.5 s)
[1][2]
Duty Cycle
[1][2]
Pulse Width
[1] For rise times <1 s. Signals centered around trigger levels.
[2] 0.5 to 200 kHz, pulse width >2 s. Pulse width range is determined by the frequency of the signal.
74
Range
99.999 Hz
999.99 Hz
9.9999 kHz
99.999 kHz
999.99 kHz
1.00 % to 99.00 %
0.1000 ms
1.000 ms
10.00 ms
1999.9 ms
Resolution
0.001 Hz
0.01 Hz
0.0001 kHz
0.001 kHz
0.01 kHz
0.01 %
0.0001 ms
0.001 ms
0.01 ms
0.1 ms
Accuracy
0.02 % + 5
0.005 % + 5
0.005 % + 5
0.005 % + 5
0.005 % + 5
0.2 % per kHz + 0.1 %
0.002 ms + 3 counts
0.002 ms + 3 counts
0.002 ms + 3 counts
0.002 ms + 3 counts