Model 2651A High Power System SourceMeter® Instrument Reference Manual
Section 3: Functions and features
2651A-901-01 Rev. A / March 2011
3-57
Figure 52: Falling edge input trigger
External Drive
Internal Drive
Physical Line State
Event
Stimulus Event
Action Overrun
Input Trigger
Output characteristics:
•
In addition to trigger events from other trigger objects, the
digio.trigger[
N
].assert()
and
tsplink.trigger[
N
].assert()
commands generate a low pulse for the programmed pulse
duration.
•
An action overrun occurs if the physical line state is low and a source event occurs.
Figure 53: Falling edge output trigger
Pulse Duration
External Drive
Internal Drive
Physical Line State
Event
Stimulus Event
Action Overrun
Output Trigger
Rising edge master trigger mode
Use the rising edge master (RisingM) trigger mode (see the figure titled "RisingM output trigger") to
synchronize with non-Keithley instruments that require a
high pulse.
Input trigger detection is not
available in this trigger mode. You can use the RisingM trigger mode to generate rising edge pulses.
NOTE
The RisingM trigger mode does not function properly if the line is driven low by an external drive.
