SMU Safety Interlock Connection Inside an STS Tester

Updated May 3, 2018

Reported In


  • PXI Source Measure Unit

Issue Details

How does the safety interlock for my PXI SMU device connect to an STS tester?


The safety interlock is connected to the internal power box and daisy chained to all instruments requiring it. 

Additional Information

The STS comes with the interlock automatically connected because as a safety feature, it is highly discouraged to leave it unconnected. This ensures that if the system isn't already shut off and a DIB is removed, power will shut off so that the pogo pins aren't hot while exposed. Power on non-interlocked devices within the tester will be unaffected by the interlock feature. 


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