Current Calibration
Voltage calibration must be completed prior to calibrating current.
High Range Programming and Measurement
Step 1. • Connect an external power supply to the module's input terminals configured to source 3 V
with a current limit of 21 A (42 A for N6792A). Connect a precision current shunt resistor in series with
the unit's input and a precision voltmeter to measure the voltage across the shunt. The shunt resistor
should be suitable for measuring current corresponding to 120% of the rated current of the load
module's high current programming range. (see Cal Setup H). Turn on the output of the power supply.
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 20 A full-scale range of output 1.
Full-scale ranges vary according to model.
Front Panel Menu Reference SCPI Command
Select System\Admin\Cal\Curr\Iprog
Select the High range. Then press Next.
CAL:CURR 20, (@1)
Step 3. Select the first current calibration point. Wait a minimum of 10 seconds for the temperature to
stabilize before measuring the input current and entering 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 Select when done.
CAL:LEV P1
*OPC?
CAL:DATA <data>
Step 4. Select the second current calibration point. Wait a minimum of 5 minutes for the temperature
to stabilize before measuring the input current and entering 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.
CAL:LEV P2
*OPC?
CAL:DATA <data>
Step 5. Select the third current calibration point. Wait a minimum of 5 minutes for the temperature to
stabilize before measuring the input current and entering the data.
Front Panel Menu Reference SCPI Command
Display shows: “Enter P3 measured data”Calculate the shunt current (I=V/R)
and enter the data.
Press Select when done.Press Next to finish calibration.
CAL:LEV P3
*OPC?
CAL:DATA <data>
6 Verification and Calibration
374 Keysight N6700C Operating and Service Guide
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