Keithley 2461 Reference Manual

Model 2461 Interactive SourceMeter® Instrument Reference Manual Section 8: TSP command reference
2461-901-01 A/November 2015 8-103
smu.contact.checkall()
This function checks the high, low, and guard connections for excessive contact resistance.
Type TSP-Link accessible
Affected by Where saved Default value
Function Yes
Usage
high, low, guard = smu.contact.checkall()
high
The result of the contact check operation for the high connection:
• true: The connection did not exceed the threshold resistance value
• false: The connection exceeded the threshold resistance value
low
The result of the contact check operation for the low connection:
• true: The connection did not exceed the threshold resistance value
• false: The connection exceeded the threshold resistance value
guard
The result of the contact check operation for the guard connection:
• true: The connection did not exceed the threshold resistance value
• false: The connection exceeded the threshold resistance value
Details
Use this command to check the high, low, and guard connections to the device under test (DUT) for
excessive contact resistance.
Use the print() command to query the result of the contact check operation. For each of the three
connections, this command returns false if the threshold resistance exceeds the level specified by
the smu.contact.threshold command, or true if it does not exceed that value.
If you get a failed indication when sending the smu.contact.check() function, use this function to
determine which connection failed.
Sending this command when contact check is not enabled results in an error.
Example
smu.contact.enable = smu.ON
print(smu.contact.checkall())
Enable contact check.
Get the status of high, low, and guard
c
onn
ections for contact check.
Output:
false false true
Indicates that the high and low connections
exceeded the specified contact check resistance
threshold value, but the guard connection did not
exceed that value.
Also see
smu.contact.check() (on page 8-102)
smu.contact.enable (on page 8-104)
smu.contact.threshold (on page 8-105)

Keithley 2461 Specifications

General

Brand	Keithley
Model	2461
Category	Measuring Instruments
Language	English