Series 2600B System SourceMeter® Instrument Reference Manual
Section 7: TSP command reference
2600BS-901-01 Rev. C / August 2016
7-271
The
asymptote
parameter can be used to customize the inflection and offset of the source value
curve. This allows log sweeps to cross zero. Setting this parameter to zero provides a conventional
logarithmic sweep. The
asymptote
value is the value that the curve has at either positive or negative
infinity, depending on the direction of the sweep.
The
asymptote
value must not be equal to or between the starting and ending values. It must be
outside the range defined by the starting and ending values.
The SMU stores only the most recent configured source action. The last call to
smu
X
.trigger.source.linear
Y
()
,
smu
X
.trigger.source.list
Y
()
, or
smu
X
.trigger.source.log
Y
()
is used for the source action.
Source functions cannot be changed within a sweep.
After configuring the sweep source values, enable the source action by setting
smu
X
.trigger.source.action
.
Example
smua.trigger.source.logv(1, 10, 11, 0)
Sweeps SMU channel A from 1 V
to 10 V in 10 steps with an
asymptote of 0 V.
Also see
(on page 7-266)
(on page 7-268)
(on page 7-269)
smuX.trigger.source.set()
This function sets the source event detector to the detected state.
Type
TSP-Link accessible
Affected by
Where saved
Default value
Function
Yes
Usage
smu
X
.trigger.source.set()
X
Source-measure unit (SMU) channel (for example,
smua.trigger.source.set()
applies to SMU channel A)
Details
This function sets the source event detector to the detected state.
The SMU automatically clears all event detectors when the
smu
X
.trigger.initiate()
function is
executed. This function should be called after the sweep is initiated. If the event detectors are
configured to clear automatically because the
smu
X
.trigger.autoclear
attribute is set to
smu
X
.ENABLE
, make sure that
smu
X
.trigger.source.set()
is issued after the SMU has
entered the trigger layer.