Tektronix Keithley 2281 Series Reference Manual page 511

Model 2281S-20-6 DC Power Supply and Battery Simulator Reference Manual
To check DC current setting accuracy:
1. Set the voltmeter as follows:
a. Set to measure DC volts.
b. Set the current range to autorange.
c. Calculate the amperes (instead of volts) by multiplying the voltmeter reading result by 20
(1/R ).
Shunt
2. Set the electronic load as follows:
a. Set to constant voltage.
b. Set to the specified voltage for your DUT (see
3. Set the DUT to 0% of the full-scale output current.
4. Set the DUT to 25% of the full-scale output voltage.
5. Turn the DUT output on.
6. Enter the voltmeter reading in the
7. Set the DUT output current to 50% of full-scale output current and repeat step 5.
8. Set the DUT output current to 75% of full-scale output current and repeat step 5.
9. Set the DUT output current to 100% of full-scale output current and repeat step 5.
077114601 / March 2019
DC current accuracy
DC current accuracy (on page B-10) table.
Appendix B: Verification
(on page B-10)).
B-33