Synchronous Master Trigger Mode - Keithley 708B Reference Manual

Section 3: Functions and features

Synchronous master trigger mode

Use the synchronous master trigger mode (SynchronousM) to generate falling edge output triggers, to
detect the rising edge input triggers, and to initiate an action on one or more external nodes with the
same trigger line.
In this mode, the output trigger consists of a low pulse. All non-Keithley instruments attached to the
synchronization line in a trigger mode equivalent to SynchronousA must latch the line low during the
pulse duration.
To use the SynchronousM trigger mode, configure the triggering master as SynchronousM and then
configure all other nodes in the test system as Synchronous, SynchronousA, or to the non-Keithley
equivalent.
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 cannot be detected until all external drives release the line and the line floats high.
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Models 707B and 708B Switching Matrix Reference Manual
NOTE
Figure 66: SynchronousM input trigger
707B-901-01 Rev. A / August 2010