User Manual

Series 2200 Programmable DC Power Supplies Reference Manual Appendix B: Calibration
2200S-901-01 Rev. A/November 2011 B-27
Check DC current line regulation
This check procedure uses the same test setup as the previous procedure (see Check DC current
and DC current readback accuracy).
1. Change the AC Power Source output to the minimum voltage specified in the following table.
DUT voltage selector switch
AC Power Source voltage
110
98 V
220
196 V
Ensure the warm-up criteria has been met as described in the Performance verification conditions (on
page B-11).
2. Set the voltmeter as follows:
a. Set to measure DC volts.
b. Set to auto range.
c. Set to show amps (instead of volts) by multiplying the voltmeter result by 20.
 Press Shift DC V (mX+B)
 Use the arrow key to move the cursor as far to the right as it can go until it is positioned on the ^.
 Press the up range button once: M=10.00000
 Move the arrow key to the 1's digit and up range once: M=20.00000
 Press Enter. The display shows B=0
 Press Enter. The display shows Units:
 Use the arrow keys to modify the display to show AMP.
 Adjust each letter individually.
3. Set the electronic load as follows:
a. Set to Constant Voltage.
b. Set to the specified voltage for your DUT (see DC current line regulation (on page B-9)).
4. Set the DUT to 0% of the full scale (FS) output voltage.
5. Set the DUT to 100% of the FS output current.
6. Turn the DUT output on.
7. Enter the voltmeter reading into the table DC current line regulation (on page B-9).
8. Change the AC Power Source output to the voltage specified in the following table.
DUT voltage selector switch
AC power source voltage
110
132 V
220
264 V