Step 4. Select the second current calibration point. Wait 5 minutes for the temperature to settle.
Calculate the shunt current (I=V/R) and enter the data.
Front Panel Menu Reference SCPI Command
Display shows: “Enter P2 measured data”.Enter the data
from the external DMM. This should be about 80% of the
full-scale current rating. Press Enter when done.
CAL:LEV P2
*OPC?CAL:DATA <data>
Step 5. Select the third current calibration point. Wait 5 minutes for the temperature to settle.
Calculate the shunt current (I=V/R) and enter the data.
Front Panel Menu Reference SCPI Command
Display shows: “Enter P3 measured data” Select the
Measured Data field. Enter the data from the external DMM.
This should be about 100% of the full-scale current rating.
Press Enter when done.Press Back to finish.
CAL:LEV P3
*OPC?CAL:DATA <data>
Current Calibration
Current Programming and High Range Measurement
Step 1.Disconnect all equipment form the output terminals.
Step 2. Select the current programing and high range measurement calibration.
Front Panel Menu Reference SCPI Command
Select System\Admin\Cal\Curr\Iprog.
Check thatnothing is connected to the output and selectNext.
Specify the full-scale current range. Full scale ranges
vary by model. This selects the 50 A range:
CAL:CURR 50
Step 3. Select the first current calibration point.Wait 5 minutes for the temperature to settle.
Front Panel Menu Reference SCPI Command
Wait5 minutes, then selectNext again. CAL:LEV P1
*OPC?
Step 4.Connect a precision shunt resistor to the output. The shunt resistor should be able to measure
at least 70% of the output’s full-scale current (see Cal Setup B). Connect the Keysight 3458A DMM
across the shunt resistor.
Front Panel Menu Reference SCPI Command
Check that the shunt is connected and select
Next.
Not applicable
Step 5.Select the second current calibration point. Wait 5 minutes for the temperature to settle.
Calculate the shunt current (I=V/R) and enter the data.
Keysight N6900/N7900 Series Operating and Service Guide 319
7 Verification and Calibration
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