2600AS-901-01 Rev. B / September 2008 Return to Section Topics 19-111
Series 2600A System SourceMeter® Instruments Reference Manual Section 19: Remote Commands
smuX.contact.threshold
X = SMU channel (a or b)
Attribute Resistance threshold for the smuX.contact.check function.
Default 50
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage rvalue = smuX.contact.threshold -- Reads threshold value.
smuX.contact.threshold = rvalue -- Writes threshold value.
smuX.contact.threshold = rvalue
rvalue = smuX.contact.threshold
rvalue The resistance, in ohms, above which contact check should fail.
Remarks The default threshold is 50Ω. The threshold should be set to less than 1kΩ.
Also see smuX.contact.check
Example Set the contact check threshold for SMU A to 5 Ω:
smua.contact.threshold = 5
smuX.makebuffer
X = SMU channel (a or b)
Function Creates a reading buffer.
Default 50
TSP-Link
accessibility
This function can be accessed from a remote TSP-Link node.
Usage mybuffer = smuX.makebuffer(buffersize)
buffersize Number of readings that can be stored.
mybuffer The reading buffer.
Remarks • Reading buffers can be allocated dynamically. These are created and allocated with the
smuX.makebuffer(buffer) function, where buffersize is the number of readings the
buffer can store.
• Dynamically allocated reading buffers can be used interchangeably with the smuX.nvbufferY
buffers.
• A reading buffer can be deleted by setting all references to the reading buffer equal to nil, then
running the garbage collector.
Details See Reading Buffers in Section 7.
Also see smuX.nvbufferY
Example Creates a 200 reading RAM buffer named “mybuffer2” for SMUA:
mybuffer2 = smua.makebuffer(200)
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