Keithley 2657A-PM-200 User Manual page 19

Verification procedure F
Verify proper operation of the protection device between the inner shields of the HI and LO terminals of the Model
2657A-PM-200:
1. As shown in the connection drawing below, connect the high voltage source-measure unit (HV SMU) to the HI
and LO,SL triaxial connectors of the protection module:
a. Connect the SMU Force HI terminal to the inner shield of the HI OUT triaxial connector of the Model
2657A-PM-200.
b. Connect the SMU Force LO terminal to the inner shield of the LO,SL OUT triaxial connector of the
Model 2657A-PM-200.
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.
PA-1055 Rev. A / February 2012
Figure 14: Connections for verification procedure F
Model 2657A-PM-200 Protection Module
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