10-34 Return to Section Topics 2600AS-901-01 Rev. B / September 2008
Section 10: Triggering Series 2600A System SourceMeter® Instruments Reference Manual
Synchronous acceptor trigger mode (SynchronousA)
Use the synchronous acceptor trigger mode (SynchronousA) in conjunction with the
SynchronousM trigger mode. The role of the internal and external drives are reversed in the
SynchronousA trigger mode.
Figure 10-20
SynchronousA input trigger
Input characteristics:
• The falling edge is detected as the external drive pulses the line low, and the internal drive
latches the line low.
Figure 10-21
SynchronousA output trigger
Output characteristics:
• In addition to trigger events from other trigger objects, the digio.trigger[N].assert
and tsplink.trigger[N].assert commands 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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