Keithley Series 2200, Справочное руководство, Страница: 125 / 160

Series 2200 Programmable DC Power Supplies Reference Manual Appendix B: Calibration
2200S-901-01 Rev. C / March 2016 B-19
Figure 20: Voltage accuracy regulation and protection test setup
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 DUT in the table
DC voltage accuracy without remote sense (on page B-4).
4. Set the DUT to the full scale (FS) output current.
5. Set the DUT to 0% of the FS output voltage (0 V).
6. Turn the DUT output on.
7. Enter the voltmeter reading into the table DC voltage accuracy without remote sense (on page B-
4).
8. Enter the voltmeter reading into the table DC voltage readback accuracy (on page B-5).
9. Enter the DUT Readback Voltage into the table DC voltage readback accuracy (on page B-5).
10. Calculate the difference of the two measurements taken in steps 8 and 9 and enter the absolute
value into the difference column of the table. DC voltage readback accuracy (on page B-5).
11. Increase the DUT output voltage by 25% of the FS output voltage.
12. Repeat steps 7 through 11 until you complete testing at 100% of FS.