![background image](http://html1.mh-extra.com/html/keithley/2657a-pm-200/2657a-pm-200_user-manual_3942139014.webp)
Model 2657A-PM-200 Protection Module
14
PA-1055 Rev. A / February 2012
Verification procedure B
Verify the operation of the diodes between HI and Guard of the Model 2657A-PM-200:
1. As shown in the connection drawing below, connect the source-measure unit (SMU) to the HI triaxial connector
of the protection module:
a. Connect the SMU Force HI terminal to the center conductor 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 HI OUT triaxial connector of the Model
2657A-PM-200.
Figure 10: Connections for verification procedure B
2. Configure the SMU to source current and measure voltage.
3. Program the current source level to 10 mA.
4. Set the voltage limit to 10 V.
5. Turn on the SMU output.
6. Verify that the voltage measured is between 0.6 V and 1.0 V.
7. Program the current source level to -10 mA.
8. Verify that the voltage measured is between -0.6 V and -1.0 V.