2
Making Measurements
36
Keysight U1211A, U1212A, and U1213A User’s and Service Guide
Performing Current Measurement
1
Set the rotary switch to
~A
.
2
Press
Shift
once to switch between AC current, DC current (for U1212A and
U1213A only), and AC + DC current (for U1213A only) measurements.
3
Press the handle to open the clamp jaw.
4
Clamp around a conductor and ensure that the conductor fits the markings on
the jaw.
5
Read the display. Press
Hz
to view the frequency indication on the secondary
display.
WARNING
Ensure the test leads are disconnected from the input terminals when
measuring current with the clamp meter.
CAUTION
Ensure that the clamp meter measures only one conductor at a time.
Measuring multiple conductors may cause inaccuracy in measurement
reading due to vector sum of currents flowing in the conductors.
Correct
Incorrect