Keithley 2601B Reference Manual page 162

Series 2600B System SourceMeter® Instrument Reference Manual Section 3: Functions and features
Example:
-- Configure a sweep from 1 to 10 V in 10 steps with an asymptote of 0 V.
smua.trigger.source.logv(1, 10, 11, 0)
-- Enable the source action.
smua.trigger.source.action = smua.ENABLE
For more information, see smuX.trigger.source.logY() (on page 7-250).
List sweeps
Use a list sweep to configure a sweep with arbitrary steps. When enabled, a measurement is made at
each point after source and measurement settling time.
To configure a list sweep, use the smuX.trigger.source.listY()function*. This function
configures the source values that the source-measure unit (SMU) will output when performing a list
sweep. After configuring the sweep, you must also enable the source action by setting the
smuX.trigger.source.action attribute.
* smuX: For Models 2601B, 2611B, and 2635B, this value is smua (SMU Channel A); for Models
2602B, 2604B, 2612B, 2614B, 2634B, and 2636B, this value can be smua (for SMU Channel A) or
smub (for SMU Channel B).
Example:
-- Sweep through 3 V, 1 V, 4 V, 5 V, and 2 V.
smua.trigger.source.listv({3, 1, 4, 5, 2})
-- Enable the source action.
smua.trigger.source.action = smua.ENABLE
When the sweep is started, the output level goes to the first point in the sweep. The sweep will
continue through the steps in the order that they were programmed.
The following figure shows a different example of a list sweep with six measurement points. When the
sweep starts, the current or voltage goes to the first point in the sweep. The unit cycles through the
sweep points in the programmed order.
Figure 60: List sweep example
Pulse mode sweeps
A pulse mode sweep can be created for any of the sweep types by configuring the end pulse action.
To configure a pulse mode sweep for source-measure unit (SMU) A, send:
smua.trigger.endpulse.action = smua.SOURCE_IDLE
To configure a DC sweep for SMU A, send:
smua.trigger.endpulse.action = smua.SOURCE_HOLD
2600BS-901-01 Rev. B / May 2013 3-27