Calibration Procedures 3
Keysight 34420A Service Guide 101
Injected Current Calibration (Optional)
This calibration minimizes the effects of injected current in the input circuits.
Injected current varies with the power line configuration and frequency (these vary
by country). You should, therefore, only calibrate injected current using the same
power line configuration as the intended use.
1 Set the meter to the following configuration:
6 1/2 digits (10 PLC)
Channel 1 input
2 Connect channel 1 HI and channel 2 HI leads to the rear panel chassis ground
screw.
3 Turn on the menu.
The injected current is calibrated at the factory using 120 Vac line power
with a hot lead, neutral lead, and an earth ground lead. You should
recalibrate injected current if you are using the meter with different line
power configurations. You should only recalibrate injected current using
the same power line configuration as the intended use.
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