Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification
Section 3: Performance Verification
077102700/ July 2014
3-15
An alternative solution is to use fork lugs for both connections at the DUT.
2. Set the voltmeter as follows:
a. Set to measure DC volts.
b. Set to auto range.
c. Verify that the math mx+b function is disabled (shift+DCV), assuring that volts are being read.
3. Set the electronic load as follows:
a. Set to constant current.
b. Set to draw a constant current at the test current specified for the channel under test in the
table for checking DC Voltage Accuracy without Remote Sense.
4. Set the channel under test to the full scale output current.
5. Set the channel under test to 0% of the full scale output voltage (0 V).
6. Turn the DUT output on.
7. Enter the voltmeter reading into the table for checking DC voltage accuracy without remote
sense.
8. Enter the voltmeter reading into the table for checking DC voltage readback accuracy.
9. Enter the channel under test readback voltage into the table for DC voltage readback accuracy.
10. Calculate the difference between the two measurements taken in steps 8 and 9 and enter the
absolute value into the difference column of the table.
11. Increase the channel under test output voltage by 25% of the full scale output voltage.
12. Repeat steps 7 through 11 until you complete testing at 100% of full scale.
13. This completes the check for one channel. If needed, return to step 1 to run through the check for
the next channel.
Check DC Voltage Line Regulation
This verification procedure uses the same test setup as the previous procedure. Perform on each
channel sequentially.
1. Change the AC power source output to the minimum voltage specified in the following table.
Ensure the warm-up criteria have been met, as described in the Performance Verification Conditions
topic.
DUT voltage selector
switch
AC power source voltage
110
99V