Tektronix KEITHLEY SourceMeter 2606B Reference Manual page 143

Section 5: Sourcing and measuring Model 2606B System SourceMeter® Instrument Reference Manual
Pulse mode sweeps
To create a pulse sweep for any of the sweep types, configure the end pulse action.
To configure a pulse 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
Timers must be used to configure the pulse width and period. Refer to Using timers to perform pulsed
sweeps (on page 7-15) for details.
The pulse width is managed by controlling the duration between the source stimulus event and the
end pulse stimulus event. A latency exists between these stimulus events and their resulting source
level transitions. This trigger latency can vary based on factors such as the source range and the
electrical characteristics of the device under test (DUT).
The figure below shows the source and end pulse stimulus events in relationship to the pulse (see
(on page 7-1) for information on stimulus events). Any change in Δt results in a
Triggering
corresponding change in the pulse width.
Figure 55: Pulse width control
5-42 2606B-901-01 Rev. C November 2021