USER’S MANUAL. OS-782
Page 57
02-2010
En
g
lis
h
5.4.8 Making an AC Current Measurement
In order to carry out the measurement of current it is necessary to connect in
series the meter and the circuit under test. Make sure that the circuit is disconnected
before doing this connection.
To measure an AC current which is less than 400 mA, do the following:
1.
Press the
A
key and
DCA
appears at the top of the screen. The unit on the
main reading screen is
mA. mA
and
20A
will display on the right bottom of
screen, press F4 or F5 to switch the measurement between
Ma
and
20A
.
400 mA is acquiescently.
2.
Press the
AUTO SET
key once and
ACA
is visible at the top of the screen.
3.
Insert the black lead into the
COM
banana jack input and the red lead into the
mA
banana jack input.
4.
Connect the red and black leads to the measured point and the
AC
current
value of the measured point will be displayed on the screen. Look at the
display; you can see a screen that looks like the following figure 38.
Figure 42.-
AC current Measurement for 400 mA.
To measure an AC current which is larger than 400 mA, do the following:
1.
Press
the
AUTO SET
key once and
ACA
is visible at the top of the screen.
2.
Press
F5
to select
20A
measure, the unit of main reading window is
A
.
3.
Press
the
AUTO SET
key once and
ACA
is visible at the top of the screen.
