Current Calibration
High Range Programming and Measurement
The output voltage may go negative at some point during this procedure on units that
have polarity reversal relays (Option 760).
Step 1. Connect a precision shunt resistor to the output. The shunt resistor should be able to measure
at least 120% of the output’s full-scale current (see Cal Setup B). Connect the Keysight 3458A DMM
across the shunt resistor.
Step 2. Select the full-scale current programming range. The value to program a range must be the
maximum current of the range. The following example selects the 5 A full-scale range of output 1.
Full-scale ranges vary according to model.
Front Panel Menu Reference SCPI Command
From the Calibration menu, select Current, High RangeProg and Meas. Then
select Start.
CAL:CURR 5, (@1)
Step 3. Select the first current calibration point and enter the data.
Front Panel Menu Reference SCPI Command
Display shows: “Enter P1 measured data” Calculate the shunt current (I=V/R)
and enter the data.
Press Selectwhen done.
CAL:LEV P1
*OPC?
CAL:DATA <data>
Step 4. Select the second current calibration point and enter the data.
Front Panel Menu Reference SCPI Command
Display shows: “Enter P2 measured data”
Calculate the shunt current (I=V/R) and enter the data.
Press Selectwhen done.
Press Next to finish calibration.
CAL:LEV P2
*OPC?
CAL:DATA <data>
Enter a Calibration Date, Save, and Log Out
Front Panel Menu Reference SCPI Command
From the Calibration menu, select Date. Enter the date, then select Insert Date.
Then select Close.
From the Calibration menu, select Save. Select Save Calibration for all Outputs.
Then select Close.
From the Administrative Tools menu, select Administrator Login/Logout to log
out of the Admin menu.
To enter a calibration date:
CAL:DATE "<date>"
To savethe calibration data:
CAL:SAVE
To exitcalibration mode:
CAL:STAT OFF
Keysight N6705C Operating and Service Guide 391
8 Verification and Calibration
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