Keithley 2600B User Manual

Series 2600B
System SourceMeter® Instrument Reference Manual Section 7:
TSP command reference
2600BS-901-01 Rev. C / August 2016 7-209
Also see
Adjustment (on page B-18)
smuX.cal.restore() (on page 7-203)
smuX.cal.save() (on page 7-204)
smuX.cal.unlock() (on page 7-205)
smuX.contact.calibratehi() (on page 7-206)
smuX.contact.check()
This function determines if contact resistance is lower than the threshold. This function is not available on the
Models 2604B/2614B/2634B.
Type TSP-Link accessible
Affected by Where saved Default value
Function Yes
Usage
smuX.contact.check()
X
Source-measure unit (SMU) channel (for example, smua.contact.check()
applies to SMU channel A)
Details
This function returns true if the contact resistance is below the threshold; this function returns
false if it is above the threshold. The threshold value is set by the smuX.contact.threshold
attribute.
If you attempt to perform a contact check measurement when any of the following conditions exist, an
error is 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")
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 smuX.source.offfunc attribute set to
smuX.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 smuX.source.offfunc attribute set to
smuX.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.

Keithley 2600B Specifications

General

Brand	Keithley
Model	2600B
Category	Measuring Instruments
Language	English