2470 High Voltage SourceMeter Instrument Reference Manual
Section 14: TSP command reference
2470-901-01 Rev. A /
May
2019
14-109
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
interlockStatus
The status of the interlock:
smu.OFF
: The interlock is not asserted and the 200 V and 1000 V range is
limited; lower voltage ranges are available
smu.ON
: 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 and 1000 V ranges are hardware limited to a nominal output of less than ±42 V.
When the interlock is not asserted:
•
The front-panel INTERLOCK indicator is off.
•
High voltage ranges are disabled.
•
If you attempt to turn on the source with a voltage more than ±21 V, an event message is
generated.
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
