Frequency Measurement - HT MULTITEST M72 User Manual

8. Example of AC current displaying. The
minimum limit of AC current is:
1.0mV x transduction ratio of the clamp
lower values are nullified.
The minimum reading value of AC and DC current is given by the herewith:
Therefore, with a clamp 400A/400mV, the minimum measurable current is 1.0A.
Lower input values are displayed as 0.0A
To pass to frequency measurement press MODE PEAK for less than 1
MODE
9.
second (only during AC current measurements, see paragraph 4.4.1)
PEAK
To detect the current peak value press MODE PEAK for more than 1 second
MODE
10.
(see paragraph 4.2.3)
PEAK
To block the detected values on the display press FUNC HOLD for less than
FUNC
11.
HOLD 1 second (see paragraph 4.2.1)
To detect maximum, minimum and average current values press FUNC
FUNC
12.
HOLD for more than 1 second (see paragraph 4.2.2)
HOLD

4.4.1. Frequency measurement

1. In order to detect minimum, average, maximum and peak values of frequency it's
necessary to pass to this measuring parameter.
It's possible to pass to frequency measurement by pressing MODE PEAK for
MODE
2.
less than 1 second
PEAK
3. Example of display of frequency value.
The minimum reading limit of frequency
is 30.0Hz. Lower input values are
displayed as <30.0Hz.
MODE
4. To resume voltage measurement press MODE PEAK for less than 1 second
PEAK
To detect the frequency peak value press MODE PEAK for more than 1
MODE
5.
second (see paragraph 4.2.3)
PEAK
To block the detected frequency value on the display press FUNC HOLD for
FUNC
6.
less than 1 second (see paragraph 4.2.1)
HOLD
To detect maximum, minimum and average frequency values press FUNC
FUNC
7.
HOLD for more than 1 second (see paragraph 4.2.2)
HOLD
1mV x transduction ratio of the clamp
EN - 13
MULTITEST M72 - M73 - M74 - M75
AC current value
Frequency value
Frequency value