Performing Current Measurements; Measuring Ac Current; Measuring Dc Current - Agilent Technologies U1251B Quick Start Manual

Performing Current Measurements

• If the current is ≤ 440 mA, connect the red and black test
CA U TI ON CA U TI ON
leads to input terminals µA.mA (red) and COM (black).
• If the current is > 440 mA, connect the red and black test
leads to input terminals A (red) and COM (black).
U1251B and U1252B Quick Start Guide

Measuring AC current

1 Set the rotary switch to
. Press
shown on the display.
2 Connect the red and black test leads to
input terminals µA.mA (red) and COM
(black) or A (blue) and COM (black)
respectively.
3 Probe the test points in series with the
circuit and read the display.

Measuring DC current

1 Set the rotary switch to
. Ensure that
the display.
2 Connect the red and black test leads to
input terminals µA.mA (red) and COM
(black) or A (blue) and COM (black)
respectively.
3 Probe the test points in series with the
circuit and read the display.
or
to ensure
or
is shown on
is