Tektronix KEITHLEY 2600B Series User Manual

Section 9: TSP command reference Series 2600B System SourceMeter® instrument Reference Manual
9-212 2600BS-901-01 Rev. F/August 2021
Also see
Adjustment (on page 10-15)
smuX.cal.restore() (on page 9-206)
smuX.cal.save() (on page 9-207)
smuX.cal.unlock() (on page 9-209)
smuX.contact.calibratehi() (on page 9-209)
smuX.contact.check()
This function determines if contact resistance is lower than the threshold. This command is not available on the
2604B, 2614B, or 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.
An error is generated when the output is on and:
• 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")
An error is generated when the output is off and:
• 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.

Tektronix KEITHLEY 2600B Series Specifications

General

Brand	Tektronix
Model	KEITHLEY 2600B Series
Category	Measuring Instruments
Language	English