Keithley 2600a series, Reference Manual, Page: 432 / 696

19-110 Return to Section Topics 2600AS-901-01 Rev. B / September 2008
Section 19: Remote Commands Series 2600A System SourceMeter® Instruments Reference Manual
smuX.contact.r X = SMU channel (a or b)
Function Measure contact resistance.
TSP-Link
accessibility
This function can be accessed from a remote TSP-Link node.
Usage
rhi, rlo = smuX.contact.r()
rhi
The measured contact resistance on the high/sense high side.
rlo
The measured contact resistance on the low/sense low side.
Remarks • Attempting to perform a contact check measurement when any of the following conditions exist
will generate an error:
• Output is off in High-Z mode.
• Current limit set to less than 1mA.
Details See Section 2 for connections.
Also see
smuX.contact.speed
smuX.contact.speed X = SMU channel (a or b)
Attribute The speed setting for contact check measurements.
Default
smuX.CONTACT_FAST
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage
speed_opt = smuX.contact.speed -- Reads speed setting.
smuX.contact.speed = speed_opt -- Writes speed setting.
speed_opt
The speed setting.
Set
speed_opt
to one of the following:
0
or
smuX.CONTACT_FAST
1
or
smuX.CONTACT_MEDIUM
2
or
smuX.CONTACT_SLOW
Remarks • 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, as reflected
in the specifications.
Example Set contact check measurements on SMU A for higher accuracy:
smua.contact.speed = smua.CONTACT_SLOW