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2
Making Measurements
– To measure current, you must open the circuit-under-test, then place the multimeter in
NOTE
series with the circuit.
– Turn off power to the circuit. Discharge all high-voltage capacitors. Insert the black test
lead into the
measurement range.
– If you are using the
– If you are using the
440 mA, or
– Press
measurements.
– Reversing the leads will produce a negative reading, but will not damage the
multimeter.
– Press and hold
combinations (refer to "Appendix B: Dual Display Combinations Using the Dual Key"
on page
– Press
"Measuring Frequency" on page
84
COM
terminal. Insert the red test lead in an input appropriate for the
terminal, set the rotary switch to
A
mA
terminal, set the rotary switch to
for current above 440 mA but below 10 A.
A
to scroll between DC (
Shift
Esc
for more than 1 second to scroll through the available dual display
145
for more information).
to enable the frequency test mode for current measurements. See
Hz
Save
A
), AC (
), or AC+DC (
89
to learn more.
Keysight U1281A/U1282A User's Guide
.
for current below
mA
) current
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