Keithley 2651A Reference Manual page 165

Section 3: Functions and features
Output characteristics:
•
Configured trigger events, as well as the digio.trigger[N].assert() and
tsplink.trigger[N].assert() commands, cause the physical line state to float high during
the trigger pulse duration.
•
An action overrun occurs if the physical line state is high while a stimulus event occurs.
Rising edge acceptor trigger mode
The rising edge acceptor trigger mode (RisingA) generates a low pulse and detects rising edge
pulses (see the following figures).
Input characteristics:
•
All rising edges generate an input event.
3-58
Model 2651A High Power System SourceMeter® Instrument Reference Manual
Figure 54: RisingM output trigger
External Drive
Internal Drive
Physical Line State
Event
Stimulus Event
Action Overrun
Figure 55: RisingA input trigger
External Drive
Internal Drive
Physical Line State
Event
Stimulus Event
Action Overrun
Pulse Duration
Output Trigger
Input Trigger
2651A-901-01 Rev. A / March 2011