Turning On the Backlight
Pressing the
button turns on the LCD’s bright white
backlight, making measurements much easier to read in
dark spaces.
To prevent the backlight from draining the meter’s
battery, the backlight automatically extinguishes in
60 seconds.
MEASURING AC OR DC CURRENT
••
Warning
••
Do not attempt to measure: 1) currents larger than
400mA through the
uA/mA
jack; 2) currents larger than
10A through the
10A
jack continuously for more than
30 seconds; pause 1 minute after each measurement
of such a large current.
Remove power from the circuit to be tested and
discharge all capacitors.
(1) Turn the rotary function switch to the
,
or
position, depending on the current amplitude you
expect to encounter. If you are unsure what amplitude
to expect, select the
position.
(2) Press the
FUNC
button to select either AC or DC
current, as indicated by the
or
display icon on
the left side of the LCD.
(3) Before measuring DC currents, press the
REL
⌬
button
to reset the DC current measurement baseline to
0A
.
(4) Plug the black test lead into the black
COM
jack at the
bottom right of the front panel.
(5) Plug the red test lead into the red
10A
or
uA/mA
jack
at the bottom left of the front panel. Choose the
uA/mA
jack if you have set the rotary function switch
to the
or
position and the
10A
jack if you have
set the rotary function switch to the
position.
(6) Break the circuit and connect the test leads across
the break. Connect the red lead to the higher-voltage
side of the break and the black lead to the lower-
voltage side.
(7) Re-apply power to the circuit and read the measured
current amplitude on the primary readout. If
O.L
is the
DC
AC
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