Keithley 2461 Reference Manual

Section
2: General operation Model 2461 Interactive SourceMeter® Instrument
Reference Manual
2-118 2461-901-01 A/November 2015
Contact check threshold resistance
The contact check threshold resistance level is the resistance value at which the contact check
operation indicates a failure. Contact check threshold resistance can be set to one of the following
values:
• 2 Ω
• 15 Ω
• 50 Ω (default)
A contact check pass condition occurs when the resistance of the device under test (DUT) connection
paths is less than the selected threshold resistance value. The following table contains recommended
contact resistance threshold values.
Nominal DUT resistance Recommended resistance threshold setting
2 Ω 2 Ω
20 Ω 2 Ω or 15 Ω
200 Ω or higher 2 Ω, 15 Ω, or 50 Ω
You must enable contact check before setting the threshold resistance.
To set the contact check threshold resistance using SCPI commands, send one of the following:
• :SYSTem:CCHeck:THReshold OHM2
• :SYSTem:CCHeck:THReshold OHM15
• :SYSTem:CCHeck:THReshold OHM50
To set the contact check threshold resistance using TSP commands, send one of the following:
• smu.contact.threshold = smu.THRESHOLD_2_OHM
• smu.contact.threshold = smu.THRESHOLD_15_OHM
• smu.contact.threshold = smu.THRESHOLD_50_OHM
If you do not select a contact check threshold resistance before running the contact check, the last
threshold resistance level set is used. The threshold resistance level reverts to the default value after
resetting or power cycling the instrument.

Keithley 2461 Specifications

General

Brand	Keithley
Model	2461
Category	Measuring Instruments
Language	English