How Do I Make Contact Check Measurements; Contact Check Connections - Keithley SourceMeter 2611 User Manual

B-12 Frequently Asked Questions

How do I make contact check measurements?

Reference

Contact check connections

The contact check function
resistance in the force or sense leads caused by poor contact at the DUT, failing
relay contacts on a switching card, or wires that are too long or thin. The contact
check function will also detect an open circuit that may occur when a four-point
probe is misplaced or misaligned.
R is the resistance of the mechanical contact at the DUT, and R
C
resistance of relays and cables.
Figure B-5
Contact check connections
1. All Model 2611/2612s manufactured by Keithley Instruments support the contact check function. Only Model
2601/2602s with firmware revision 1.1.0 or later and SMU hardware revision E or later support the contact check
function. To determine the firmware and SMU hardware revisions, inspect the data returned by the
print(localnode.info()) command. The InstFwRev and SMUBrdRev keys contain the necessary information.
2600S-900-01 Rev. A / May 2006
Refer to "Contact check measurements" in Section 4 and command
information in Section 12 of the Series 2600 Reference Manual for
contact check details.
1
prevents measurement errors due to excessive
Figure B-5
Return to In this Appendix:
Series 2600 System SourceMeters User's Manual
shows contact check connections.
is the series
S