Keithley 2651A Reference Manual page 168

Model 2651A High Power System SourceMeter® Instrument Reference Manual
Use the SynchronousM trigger mode to receive notification when the triggered action on all nodes is
complete.
Input characteristics:
•
All rising edges are input triggers.
•
When all external drives release the physical line, the rising edge is detected as an input trigger.
•
A rising edge is not detected until all external drives release the line and the line floats high.
Output characteristics:
•
In addition to trigger events from other trigger objects, the digio.trigger[N].assert() and
tsplink.trigger[N].assert() functions generate a low pulse that is similar to the falling
edge trigger mode.
•
An action overrun occurs if the physical line state is low while a stimulus event occurs.
2651A-901-01 Rev. A / March 2011
NOTE
Figure 59: SynchronousM input trigger
External Drive
Internal Drive
Physical Line State
Event
Stimulus Event
Action Overrun
Section 3: Functions and features
Input Trigger
3-61