8: TSP command reference Model 2450 Interactive SourceMeter® Instrument
8-86 2450-901-01 Rev. B/September 2013
smu.interlock.tripped
This attribute indicates that the interlock has been tripped.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (R) Yes Not applicable Not applicable Not applicable
Usage
interlockStatus = smu.interlock.tripped
The status of the interlock:
• smu.OFF: The interlock is not asserted and the 200 V range is disabled;
lower voltage ranges are available
•
: The interlock signal is asserted and all voltage ranges are available
Details
This command gives you the status of the interlock. When the safety interlock signal is asserted, all voltage
ranges of the instrument are available. However, when the safety interlock signal is not asserted, the 200 V
range is disabled, limiting the nominal output to ±37 V.
When the interlock is not asserted:
• The front-panel INTERLOCK indicator is on.
• High voltage ranges are disabled.
• An event message is generated when you attempt to turn on the source with a voltage higher
than ±20 V.
Example
print(smu.interlock.tripped)
If the interlock is not asserted, returns smu.OFF.
If the interlock is asserted, returns smu.ON.
Also see
None
smu.measure.autorange
This attribute determines if the measurement range is set manually or automatically for the selected measurement
function.
Type TSP-Link accessible Affected by Where saved Default value
Instrument reset
Power cycle
Measure configuration list
Function change
Measure configuration list
Usage
autoRange = smu.measure.autorange
smu.measure.autorange = autoRange
Set the measurement range manually: smu.OFF
Set the measurement range automatically: smu.ON
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