12-74 Return to Section Topics 2600S-901-01 Rev. C / January 2008
Section 12: Instrument Control Library Series 2600 System SourceMeter® Instruments Reference Manual
Remarks • Reading this attribute gives the output-off mode of the source. Setting this attribute
configures the SMU output-off mode.
• The default offmode is smuX.OUTPUT_NORMAL. In this mode, the SMU will source 0
volts. For the 2601/2602, the compliance to 10% of the current source range or 100uA,
whichever is smaller. If the source function is voltage, the 10% compliance will inherently
be a reduction in compliance current. If the source function is current, the 10%
compliance value may be more or less than the current that was being sourced. For the
2611/2612/2635/2636, the compliance to the value specified by
smuX.source.offlimiti (default 1mA).
• When offmode is set to smuX.OUTPUT_HIGH_Z, the SMU will open the output relay
when the output is turned off.
• When the offmode is set to smuX.OUTPUT_ZERO, the SMU will source 0 volts just as
OUTPUT_NORMAL mode does. If the source function is voltage, the current limit will not be
changed. If the source function was current, the current limit will be set to the current
source level or 10% of the current source range, whichever is greater.
Details See “Output-off states” in Section 3.
Also see smuX.source.output
Example Sets output-off mode for SMU A:
smua.source.offmode = smua.OUTPUT_HIGH_Z
smuX.source.output
X = SMU channel (a or b)
Attribute Source output control (on/off).
Usage state = smuX.source.output -- Reads output state.
smuX.source.output = state -- Writes output state.
Set state to one of the following values:
0 or smuX.OUTPUT_OFF Turns the source output off.
1 or smuX.OUTPUT_ON Turns the source output on.
Remarks Reading this attribute gives the output state of the source. Setting this attribute will turn
the output of the source on or off. The default for the source is off. When the output is
turned on, the SMU will source either voltage or current as dictated by the
smuX.source.func setting.
Details See Section 4 "basic operation".
Also see smuX.source.func, smuX.source.offmode
Example Turns SMU A source output on:
smua.source.output = smua.OUTPUT_ON
smuX.source.outputenableaction
X = SMU channel (a or b)
Attribute Output enable or interlock action for the source.
Usage action = smuX.source.outputenableaction-- Reads enable action.
smuX.source.outputenableaction = action-- Writes enable action.
Set action to one of the following values:
0 or smuX.OE_NONE No action.
1 or smuX.OE_OUTPUT_OFF Turns the source output off.
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