Keithley 2606B System SourceMeter, Reference Manual

Page: 472 / 756

Section 7: TSP command reference 2606B System SourceMeter® Instrument Reference Manual
7-188 2606B-901-01 Rev. B / May 2018
When the output is off and any of the following:
•
The output off mode is High-Z (error code 5048, "Contact check not valid with HIGH-Z OUTPUT
off")
•
The output off mode is Normal with the
smu X .source.offfunc
attribute set to
smu X .OUTPUT_DCVOLTS
and the off current limit set to less than 1 mA (error code 5066,
"source.offlimiti too low for contact check")
•
The output off mode is Normal with the
smu X .source.offfunc
attribute set to
smu X .OUTPUT_DCAMPS
and the source range is less than 1 mA (error code 5065, "I range too
low for contact check")
Example
if not smua.contact.check() then
-- take action
end
Takes action if contact check on SMU channel A fails.
Also see
Contact check connections (on page 2-51)
Contact check measurements (on page 2-50)
smuX.contact.speed (on page 7-189)
smuX.contact.threshold (on page 7-190)
smuX.source.offfunc (on page 7-220)
smuX.contact.r()
This function measures aggregate contact resistance.
Type TSP-Link accessible Affected by Where saved Default value
Function Yes
Usage
rhi , rlo = smu X .contact.r()
rhi The measured aggregate contact resistance on the HI/sense HI side
rlo The measured aggregate contact resistance on the LO/sense LO side
X Source-measure unit (SMU) channel (for example,
smua.contact.r()
applies to
SMU channel A)
Details
If you attempt to perform a contact resistance measurement when any of the following conditions
exist, an error will be generated.
When the output is on and any of the following:
•
SMU is a current source with current range set to less than 1 mA (error code 5065, "I range too
low for contact check")
•
SMU is a voltage source with current limit set to less than 1 mA (error code 5050, "I limit too low
for contact check")