Specifications

Calibration Procedure
Current Calibration
Current Programming and Measurement
To guarantee a clean signal for calibration points 1 through 4, program the electronic load to either
2% of the full-scale voltage rating of the power supply or 3 V - whichever is greater.
Step 1. Turn off the output. Connect an electronic load and a precision current shunt to the output terminals. The cur-
rent shunt should be able to measure the rated output current of the power supply. Connect a DMM directly across the
current shunt. (see Test Setup B).
Step 2. Select the current programing and measurement calibration.
Front Panel Menu SCPI Command
Select System\Admin\CAL\Curr.
Check that the shunt and voltmeter are con-
nected and select Next.
Specify current calibration:
CAL:CURR
Step 3. Select the first current calibration point. Wait 15 seconds for the output to stabilize. Calculate the shunt cur-
rent (I=V/R) and enter the data.
Front Panel SCPI Command
Display shows: “Enter P1 measured data”
Enter the data from the external DMM.
Press Enter when done.
CAL:LEV P1
*OPC?
CAL:DATA <data>
Step 4. Select the second current calibration point. Wait 15 seconds for the output to stabilize. Calculate the shunt cur-
rent (I=V/R) and enter the data.
Front Panel SCPI Command
Display shows: “Enter P2 measured data”
Enter the data from the external DMM.
Press Enter when done.
CAL:LEV P2
*OPC?
CAL:DATA <data>
Step 5. Select the third current calibration point. Wait 15 seconds for the output to stabilize. Calculate the shunt cur-
rent (I=V/R) and enter the data.
Front Panel SCPI Command
Display shows: “Enter P3 measured data”
Enter the data from the external DMM.
Press Enter when done.
CAL:LEV P3
*OPC?
CAL:DATA <data>
Front Panel SCPI Command
A warning message about the full scale out-
put current appears on the display.
Select Next.
Not applicable
130 Agilent N8900 Series Operating and Service Guide