Keithley 2657A-PM-200 User Manual page 18

Model 2657A-PM-200 Protection Module
2. Configure the HV SMU to source current and measure voltage.
3. Program the current source level to 20 mA.
4. Program the voltage limit to 220 V.
5. Turn on the HV SMU output.
6. Verify that the voltage measured is 220 V.
7. Program the current source level to -20 mA.
8. Verify that the voltage measured is -220 V.
9. Turn off the HV SMU output.
10. Connect the scope across the output terminals of the HV SMU.
11. Configure the HV SMU to source voltage.
12. Program the voltage source level to +300 V.
13. Turn on the HV SMU output and trigger the scope.
14. Verify that the voltage waveform on the scope has a ramped waveform. The voltage should ramp up to at
least 150 V and then clamp to less than 50 V.
15. Turn off the HV SMU output.
16. Program the voltage source level to -300 V.
17. Turn on the HV SMU output.
18. Verify that the voltage waveform on the scope has a ramped waveform. The voltage should ramp down to
at least -150 V and then clamp to less than -50 V.
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Figure 13: Connections for verification procedure E
PA-1055 Rev. A / February 2012