Section 3: Functions and features Model 2657A High Power System SourceMeter® Instrument Reference Manual
3-32 2657A-901-01 Rev. B/December 2012
You can obtain very precise timing and synchronization between channels of multiple instruments
using the trigger model to control the actions of the source-measure unit (SMU). To achieve such
precise timing, use a static trigger configuration. When a static trigger configuration is not possible,
you can use the interactive triggering method to control the timing and actions of the SMU.
Both programming methods use trigger objects. Trigger objects generate and monitor trigger events.
External triggers are possible using digital I/O, TSP-Link
®
synchronization lines, LAN, command
interface, and the manual trigger (the TRIG key).
The following figure graphically represents all the trigger objects of the Model 2657A instrument.
Figure 40: Triggering overview
Manual trigger
Hardware triggers Communication triggers
Model 2651A
DIGITAL
I/O
(14 lines)
TSP-LINK
SYNC.
LINES
(3 lines)
LAN
(8 triggers)
SMU A
TIMER
(8)
COMMAND
INTERFACE
MANUAL
(front panel
TRIG key)
EVENT
BLENDER
(4)
Legend:
= Trigger object
= External input trigger
= External output trigge
= Trigger events
= Stimulus input
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