Keithley 2606B System SourceMeter, Справочное руководство

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2606B System SourceMeter® Instrument Reference Manual Section 2: General operation
2606B-901-01 Rev. B / May 2018 2-51
Contact check commands
The following table summarizes the basic contact check commands. For a more complete description
of these commands, refer to the
TSP command reference (on page 7-1). For connection information,
refer to Contact check connections (on page 2-51).
Basic contact check commands
Command Description
flag = smu X .contact.check() Determine if contact resistance is lower than
threshold.
rhi, rlo = smu X .contact.r()
Measure the aggregate contact resistance.
smu X .contact.speed = speed_opt Set
speed_opt
to one of the following:

0
or
smu X .CONTACT_FAST

1
or
smu X .CONTACT_MEDIUM

2
or
smu X .CONTACT_SLOW
smu X .contact.threshold = rvalue Set resistance threshold for the contact check
function.
Contact check programming example
The following programming example illustrates the setup and command sequence for a typical
contact measurement. These commands set the contact check speed to fast and the threshold to
100
Ω. Then, a contact check measurement against the threshold is made. If it fails, a more accurate
contact check measurement is made, and the test is aborted. Otherwise, the output is turned on, and
the test continues.
-- Restore defaults.
smua.reset()
-- Set speed to fast.
smua.contact.speed = smua.CONTACT_FAST
-- Set threshold to 100 ohms.
smua.contact.threshold = 100
-- Check contacts against threshold.
if not smua.contact.check() then
-- Set speed to slow.
smua.contact.speed = smua.CONTACT_SLOW
-- Get aggregate resistance readings.
rhi, rlo = smua.contact.r()
-- Return contact resistances to the host.
print(rhi, rlo)
-- Terminate execution.
exit()
end
-- Turn output on and continue.
smua.source.output = smua.OUTPUT_ON