3 Calibration Procedures
104 Keysight 34420A Service Guide
Chart Output Calibration (Optional)
The chart output (analog output) uses two calibration constants, a zero and a
gain. Chart Output calibrations are performed with an external DMM.
1 Set the meter to the power-on state. Connect the low thermal shorting plug to
the meter's input.
2 Connect the chart output to the input of the DMM. Set the DMM to measure
DC volts.
3 Turn on the Menu.
4 Select the G:CALIBRATE menu.
5 Go to the command level and select the 3:CHART ZERO command.
6 Go to the parameter level.
7 Edit the displayed value to match the value indicated on the DMM. Execute
the command. The zero calibration takes approximately 2 seconds to perform.
8 Use menu recall to return to the 3:CHART ZERO command.
9 Scroll to the 4:CHART GAIN command and go to the parameter level.
10 Edit the displayed value to match the value indicated on the DMM. Execute
the command. The gain calibration takes approximately 2 seconds to perform.
11 Perform the “Chart Output Verification Procedure” on page 89.
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