User manual

Section
7: TSP command reference Series 2600B System SourceMeter® Instrument
Reference Manual
7-196 2600BS-901-01 Rev. B / May 2013
Details
This setting controls the aperture of measurements made for contact check. It does not affect the
smuX.measure.nplc aperture setting.
The speed setting can have a dramatic effect on the accuracy of the measurement (see specifications).
Example
smua.contact.speed = smua.CONTACT_SLOW
Configure contact check for higher accuracy
on SMU channel A.
Also see
Contact check connections (on page 2-54)
Contact check measurements (on page 2-44)
reset() (on page 7-160)
smuX.contact.check() (on page 7-193)
smuX.contact.r() (on page 7-194)
smuX.reset() (on page 7-216)
smuX.contact.threshold
This attribute stores the resistance threshold for the smuX.contact.check() function. This attribute is not
available on the Models 2604B/2614B/2634B.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (RW)
Yes
Instrument reset
SMU reset
Recall setup
Not saved
50 (50 Ω)
Usage
rValue = smuX.contact.threshold
smuX.contact.threshold = rValue
rValue
The resistance above which contact check should fail (measured in ohms)
X
Source-measure unit (SMU) channel (for example, smua.contact.threshold
applies to SMU channel A)
Details
The threshold should be set to less than 1 kΩ.
Example
smua.contact.threshold = 5
Set the contact check threshold for SMU channel A to 5 Ω.
Also see
Contact check connections (on page 2-54)
Contact check measurements (on page 2-44)
reset() (on page 7-160)
smuX.contact.check() (on page 7-193)
smuX.reset() (on page 7-216)