Tektronix Keithley 2651A Reference Manual page 175

Model 2651A High Power System SourceMeter® Instrument Reference Manual
-- Set the trigger source limit, which can be different than the bias limit.
-- This is an important setting for pulsing in the extended operating area.
smua.trigger.source.limiti = 1
smua.measure.rangei = 1
-- Trigger SMU source action with the period timer event.
smua.trigger.source.stimulus = period_timer.EVENT_ID
-- Configure the endpulse action to achieve a pulse.
smua.trigger.endpulse.action = smua.SOURCE_IDLE
-- Trigger the SMU end pulse action with a pulse width timer event.
smua.trigger.endpulse.stimulus = pulsewidth_timer.EVENT_ID
-- Set the trigger model count to generate one 10-point pulse train.
smua.trigger.arm.count = 1
smua.trigger.count = 10
-- Turn on the SMU output and initiate the trigger model to output the pulse train.
smua.source.output = smua.OUTPUT_ON
smua.trigger.initiate()
-- Wait for the sweep to complete.
waitcomplete()
-- Turn off SMU output.
smua.source.output = smua.OUTPUT_OFF
Event blenders
The ability to combine trigger events is called event blending. You can use an event blender to wait
for up to four input trigger events to occur before responding with an output event.
You set the event blender operation using remote commands. You cannot set them up through the
front panel.
You can program up to four event blenders for the Model 2651A.
Event blender modes
Event blenders perform logical AND and logical OR functions on trigger events. For example, trigger
events can be triggered when either a manual trigger or external input trigger is detected.
•
Or: Generates an event when an event is detected on any one of the four stimulus inputs
•
And: Generates an event when an event is detected on all of the assigned stimulus inputs
Set the trigger.blender[N].orenable attribute to configure the event blender mode. Setting
the attribute to true enables OR mode; setting the attribute to false enables AND mode.
2651A-901-01 Rev. C October 2021
Section 3: Functions and features
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