High Voltage SourceMeter Instrument Reference Manual Section 8:
2470-901-01 Rev. A / May 2019 8-21
Synchronous acceptor
Use the synchronous acceptor trigger mode with the synchronous master mode or its non-Keithley
equivalent.
Only one instrument should be configured as a synchronous master. All other instruments connected
to the synchronization line must be configured as synchronous acceptor or equivalent.
A line that is set to the synchronous acceptor mode detects falling edge input triggers and generates
rising edge output triggers on the same trigger line. When a line that is configured as synchronous
acceptor detects the falling edge trigger, it latches the line low and holds it in that state until all
triggered actions for that instrument are complete. When the triggered actions are complete, the
synchronous acceptor line releases the line. When all connected instruments have released the line,
the line changes state and generates a rising edge trigger.
Input characteristics:
• The falling edge is detected as the external drive pulses the line low, and the internal drive
l
atches the line low.
Figure 131: Synchronous acceptor input trigger
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