Keithley 2657A-PM-200 User Manual page 20

Model 2657A-PM-200 Protection Module
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.
20 PA-1055 Rev. A / February 2012