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2600AS-901-01 Rev. B / September 2008
Return to
19-137
Series 2600A System SourceMeter® Instruments Reference Manual
Section 19: Remote Commands
smuX.source.offmode
X = SMU channel (a or b)
Attribute
Source output-off mode.
Default
smuX.OUTPUT_NORMAL
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage
offmode = smuX.source.offmode
-- Reads output-off mode.
smuX.source.offmode = offmode
-- Writes output-off mode.
offmode
The output-off setting.
Set
offmode
to one of the following values:
0
or
smuX.OUTPUT_NORMAL
Outputs 0V when the output is turned off.
1
or
smuX.OUTPUT_ZERO
Zero the output (in either volts or current) when off.
2
or
smuX.OUTPUT_HIGH_Z
Opens the output relay when the output is turned off.
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 2601A/2602A, the compliance to 10% of the current source range or 100µA, 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 2611A/2612A/2635A/2636A, 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
Also see
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).
Default
smuX.OUTPUT_OFF
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage
state = smuX.source.output
-- Reads output state.
smuX.source.output = state
-- Writes output state.
state
The source output status.
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
.
Also see
Example
Turns SMU A source output on:
smua.source.output = smua.OUTPUT_ON