6
Performance Tests and Calibration
94
Keysight U1211A, U1212A, and U1213A User’s and Service Guide
Functional tests (only for U1212A and U1213A)
DC current offset verification test
1
Place the clamp meter at a stationary position. Keep the clamp jaw closed
without any conductor within the jaw.
2
Turn the rotary switch of the clamp meter to the DC current function.
3
Check whether the measured reading falls within the specified error limits from
the reference value as stated in
. Otherwise, repair is recommended.
Please contact Keysight Service Center for support.
NOTE
Ensure that the clamp meter is stationary when conducting the functional tests
in order to get accurate readings.
Table 6-3
DC current offset verification test
Test function
Range
Reference input value
Error limits
[a]
DC current
40 A
0 A
±0.15 A
[a] Null function turned on.