Frequency Counter Specifications - Fluke 88 V User Manual

Function
2
Frequency
(0.5 Hz to 200 kHz,
pulse width > 2 µs)
RPM n
RPM o
3 0.0 to 99.9% (0.5 Hz to 200 kHz, Pulse Width >2 µs)
% Duty Cycle
3 0.002 to 1999.9 ms (4 Hz to 200 kHz, Pulse Width >2 µs)
Pulse Width
1. Pulse Width range is determined by the frequency of the signal.
2. Frequency measurements can be made on voltage or current inputs. The current inputs are always dc coupled.
For rise times <1 µs. Duty Cycle Accuracy: ±(0.2 % per kHz + 0.1%). Pulse Width Accuracy: ±(0.002 ms + 3).
3.
4. Using the RPM80 probe.
Table 17. Frequency Counter Specifications
Range Resolution
199.99 0.01 Hz
1999.9 0.1 Hz
19.999 kHz 0.001 kHz
199.99 kHz 0.01 kHz
> 200 kHz 0.1 kHz
4
30 to 9,000 1 RPM
60 to 1 RPM
4
12,000
Pulse Width Range
Accuracy
± (0.01 % + 1)
1999.9
± (0.01 % + 1)
5.00
± (0.01 % + 1)
0.500
± (0.01 % + 1)
0.0500
unspecified
± 2 RPM
± 2 RPM
Automotive Multimeter
Specifications
Resolution
1
(ms) (ms)
0.1
0.01
0.001
0.0001
71