Keithley 2450 Reference Manual page 239

Section 3: Functions and features
Output characteristics:
•
In addition to trigger events from other trigger objects, the TSP commands
trigger.digout[N].assert() and trigger.tsplinkout[N].assert() release the line
if the line is latched low. The pulse width is not used.
•
The physical line state does not change until all drives (internal and external) release the line.
•
Action overruns occur if the internal drive is not latched low and a source event is received.
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Model 2450 Interactive SourceMeter® Instrument Reference Manual
Figure 104: SynchronousA input trigger
Figure 105: SynchronousA output trigger
2450-901-01 Rev. B/September 2013