Section 6: Triggering Model 2601B-PULSE System SourceMeter Instrument Reference Manual
6-34 2601B-PULSE-901-01A April 2020
Synchronous acceptor trigger mode (SynchronousA)
Use the synchronous acceptor trigger mode (SynchronousA) on a trigger subordinate that operates
with a trigger master configured for the SynchronousM trigger mode. The roles of the internal and
external drives are reversed in the SynchronousA trigger mode.
Input characteristics:
• The falling edge is detected as the external drive pulses the line low, and the internal drive
latches the line low.
Figure 92: Synchronous acceptor input trigger
Output characteristics:
• In addition to trigger events from other trigger objects, the digio.trigger[N].assert() and
tsplink.trigger[N].assert() functions 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.
Figure 93: Synchronous acceptor output trigger
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