Section 4: Sourcing and measuring Model 2601B-PULSE System SourceMeter Instrument Reference Manual
4-68 2601B-PULSE-901-01A April 2020
The log steps for this sweep are listed in the table below.
When this sweep starts, the output will go to the start level (1 V) and sweep through the symmetrical
log points.
To configure a logarithmic staircase sweep, use the smua.trigger.source.logY()function. This
function configures the source values the source-measure unit (SMU) will output when performing a
logarithmic sweep. After configuring the sweep, you must also enable the source action by setting the
following attribute:
smua.trigger.source.action
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 smua.trigger.source.logY() (on page 11-256).
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 smua.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
smua.trigger.source.action attribute.
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
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