Performance Tests and Calibration
6
Keysight U1211A, U1212A, and U1213A User’s and Service Guide
87
Basic Operating Tests
These operating tests are for testing the basic operation of the instrument. Repair
is required if the instrument fails any of these basic operating tests.
Testing the display
Press
Hold/Max Min
while rotating the rotary switch to
~A
on the clamp meter to
view all segments of the annunciator display. Compare the display with the
example in
Figure 6-1
Full segments of annunciator display
Testing the backlight
Press Hz/%/
for more than 1 second to carry out test on the backlight.