How are the various quantities measured?
6,000- and 60,000-count digital multimeters
29
How are the various quantities measured? (continued)
2. Current
measurement
as an ammeter
1. Press:
.
2. Select the type of signal, AC+DC, AC, or DC, by pressing
. Depending
on what you select, the screen displays AC, DC, or AC+DC.
3. Connect the black lead to the “COM” terminal and the red lead to “
A
”.
*
If the connection is not correct, an audible beep and a visible signal
(LEADS) are activated.
4. Place the test probes in series between the source and the load:
5. Read the measurement value indicated on the display unit.
“
O.L
” is displayed, if I
>
20A.
6. As default, the 2
nd
display unit indicates the frequency, except in DC.
*
It is possible to activate the filter in A
AC+DC
, A
AC
. The cutoff
frequency of the filter is
≤
300Hz.
When a voltage having a frequency above 150Hz is measured, it is
heavily attenuated, and so a large error may be observed. It is
necessary in this case to deactivate the filter to have the full passband.
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