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Automotive Multimeter
Specifications
71
Table 17. Frequency Counter Specifications
Function
Range
Resolution
Accuracy
Pulse Width Range
(ms)
1
Resolution
(ms)
Frequency
2
(0.5 Hz to 200 kHz,
pulse width > 2 µs)
199.99
1999.9
19.999 kHz
199.99 kHz
> 200 kHz
0.01 Hz
0.1 Hz
0.001 kHz
0.01 kHz
0.1 kHz
± (0.01 % + 1)
± (0.01 % + 1)
± (0.01 % + 1)
± (0.01 % + 1)
unspecified
1999.9
5.00
0.500
0.0500
0.1
0.01
0.001
0.0001
RPM n 30 to 9,000
4
1 RPM ± 2 RPM
RPM o 60 to
12,000
4
1 RPM ± 2 RPM
% Duty Cycle
3
0.0 to 99.9% (0.5 Hz to 200 kHz, Pulse Width >2 µs)
Pulse Width
3
0.002 to 1999.9 ms (4 Hz to 200 kHz, Pulse Width >2 µs)
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.
3. For rise times <1 µs. Duty Cycle Accuracy: ±(0.2 % per kHz + 0.1%). Pulse Width Accuracy: ±(0.002 ms + 3).
4. Using the RPM80 probe.
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