Tektronix Keithley 2651A Reference Manual page 151

Model 2651A High Power System SourceMeter® Instrument Reference Manual
Source and measurement delays
Whenever the source-measure unit (SMU) outputs a source value in a sweep, it also applies the
programmed source delay. The default source delay is zero (0) seconds. Set an additional source
delay using the smuX.source.delay attribute.
Whenever the SMU makes a measurement in a sweep, it also applies any configured measurement
delays. Use the smuX.measure.delay attribute to program a specific measurement delay. The
default measurement delay varies by measure range.
Initiating and running sweeps
To run a sweep, you must configure the number of sweep points to output and the number of sweeps
to perform. See
Examples:
To start a sweep, use the smuX.trigger.initiate() function. Sweeps are overlapped
operations, so you can use the waitcomplete() function to suspend further operation until the
sweep is complete.
To sweep 15 source points:
smua.trigger.count = 15
To perform eight sweeps:
smua.trigger.arm.count = 8
Aborting a sweep
You can use the smuX.abort() function to terminate all overlapped operations on a
source-measure unit (SMU), including sweeps. It returns the SMU to the idle state of the remote
trigger model. See
Sweeping using factory scripts
Factory script functions that perform linear staircase, logarithmic staircase, and list sweeps are
described in
simple sweeps or use them as examples for programming your own custom sweeps.
2651A-901-01 Rev. C October 2021
Triggering (on page 3-36) for more information.
Triggering (on page 3-36) for more information.
Factory scripts (on page 5-21). You can use the factory script functions to execute
Section 3: Functions and features
3-33