Measuring Ac Or Dc Current - Keysight Technologies U1231A Guia Del Usuario

Measuring AC or DC Current

Set up your multimeter to measure AC or DC current as shown in
Figure
Never attempt an in-circuit current measurement where the open-circuit
WARNING
potential to earth is greater than 1000 V. Doing so will cause damage to the
multimeter and possible electric shock or personal injury.
To avoid possible damage to the multimeter or to the equipment under test:
CAUTION
– Check the multimeter's fuses before measuring current.
– Use the proper terminals, function, and range for your measurement.
– Never place the probes across (in parallel with) any circuit or component
– To measure current, you must open the circuit under test, then place the
NOTE
– Insert the black test lead into the COM terminal. Insert the red test lead in an
– Press
Keysight U1231A, U1232A, and U1233A User's Guide
2-25. Probe the test points and read the display.
when the leads are plugged into the current terminals.
multimeter in series with the circuit.
input appropriate for the measurement range.
– Set the positive input terminal to the A terminal and set the rotary switch
position to
Hz
– Set the positive input terminal to the mA terminal and set the rotary switch
position to
to cycle between DC current measurement, AC current
measurement, or to measure the frequency of the AC current source. See
"Measuring Frequency"
for currents above 600 μA.
for currents below 600 μA.
Hz
on page 82 to learn more.
Making Measurements
Figure 2-24
2
and
77