Current Calibration
High Range Programming and Measurement - All Models
Do not connect anything to the Sense terminals
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 full-scale range of output 1. For
models N6781A, N6782A, and N6784A, the full-scale 3 A range calibrates both the 3 A and 1 A
ranges.
Front Panel Menu Reference SCPI Command
Select System\Admin\Cal\Curr\Iprog
Select the High range. Then press Next.
For N6785A, N6786A:
CAL:CURR 8, (@1)
For N6781A, N6782A, N6784A:
CAL:CURR 3, (@1)
Step 3. Select the first current calibration point and enter the data. This value may be positive or
negative.
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 and enter the data. Wait a minimum of 1 minute for
the output current to stabilize before entering the data.
Front Panel Menu Reference SCPI Command
Wait1 minuteand select Next.
Display shows: “Enter P2 measured data”
Calculate the shunt current (I=V/R) and enter the data.
Press Select when done.
CAL:LEV P2
*OPC?
CAL:DATA <data>
Step 5. Select the third current calibration point for the negative range and enter the data. The value
should be negative.
Front Panel Menu Reference SCPI Command
Display shows: “Enter P3 measured data”
Calculate the shunt current (I=V/R) and enter the data. Press Selectwhen done.
Press Next to finish calibration.
CAL:LEV P3
*OPC?
CAL:DATA <data>
6 Verification and Calibration
364 Keysight N6700C Operating and Service Guide
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