Appendix B: Verification Series 2280 Precision DC Power Supply Reference Manual
B-24 077085503 / March 2019
To check DC voltage readback accuracy without remote sense:
1. Set the voltmeter as follows:
 Set to measure DC voltage.
 Set the current range to autorange.
 Verify that the Math mx + b function is disabled (shift DCV), assuring that volts are being read.
2. Set the DUT to the full-scale output current.
3. Set the DUT to 0% of the full-scale output voltage (0 V).
4. Turn the DUT output on.
5. Enter the voltmeter reading in the DC voltage readback accuracy without remote sense (on page
B-6) table.
6. Enter the DUT readback voltage in the DC voltage readback accuracy without remote sense (on
page B-6) table.
7. Calculate the difference of the two measurements taken in step 5 and step 6 and enter the
absolute value in the difference column of the DC voltage readback accuracy without remote
sense (on page B-6) table.
8. Increase the DUT output voltage by 25% of the full-scale output voltage.
9. Repeat steps 3 through 8, increasing the output voltage until you complete testing at 100% of full-
scale output voltage.
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