Section 7: TSP command reference
Model 2657A High Power System SourceMeter® Instrument Reference Manual
7-190
2657A-901-01 Rev. B/December 2012
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
smu
X
.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
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
(on page 2-51)
(on page 2-37)
(on page 7-191)
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)
Summary of Contents for 2657A
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