Keithley 2461, Reference Manual, Page: 144 / 1109

Model 2461 Interactive SourceMeter® Instrument Reference Manual Section 2: General operation
2461-901-01 A/November 2015 2-117
Contact check measurement connections
The contact check function can be used to verify satisfactory contact resistance to the device under
test (DUT) at both the front and rear panels of the Model 2461. Contact check can be run with the
instrument in either 2-wire or 4-wire mode. If you run contact check in 2-wire mode, make sure to
change the source-measure unit (SMU) to 4-wire (remote sense) mode before measuring to ensure
that your measurements are made correctly.
The high, low, and guard source-sense pairs are tested when contact check is enabled. To get the
result of the contact check operation for each of these connections, use the smu.contact.checkall()
(on page 8-103) or :SYSTem:CCHeck:ALL? command. The following figure shows contact check
connections to a DUT.
Figure 76: Rear-panel contact check measurement connections
Enabling or disabling contact check
Before sending any contact check status commands, you must enable the contact check function.
To enable contact check using SCPI commands:
:SYSTem:CCHeck:STATe ON
To enable contact check using TSP commands:
smu.contact.enable = smu.ON
To disable contact check using SCPI commands:
:SYSTem:CCHeck:STATe OFF
To disable contact check using TSP commands:
smu.contact.enable = smu.OFF