Keithley 3720-ST User Manual

Section 5: Switching and scanning Series 3700A System Switch/Multimeter Reference Manual
5-38 3700AS-901-01 Rev. D/June 2018
Synchronous trigger mode
The synchronous trigger mode is a combination of SynchronousA and SynchronousM trigger modes.
Keithley Instruments recommends using SynchronousA and SynchronousM modes only.
Input characteristics:
• The falling edge generates an input event and latches the internal drive low.
Figure 96: Synchronous input trigger
Output characteristics:
• In addition to trigger events from other trigger objects, the digio.trigger[N].assert() and
tsplink.trigger[N].assert() functions generate a low pulse for the programmed pulse
duration if the line is latched low, a falling edge does not occur.
• When the trigger is asserted and the line is latched low, the pulse duration is enforced, and then
the internal line drive is released.
• A normal falling edge pulse generates when the internal drive is not latched low and the
digio.trigger[N].assert() and tsplink.trigger[N].assert() functions are issued.
• To mirror the SynchronousA trigger mode, set the pulse width to 1 s or any small nonzero value.
• Action overruns are disabled.
Figure 97: Synchronous output trigger

Keithley 3720-ST Specifications

General

Brand	Keithley
Model	3720-ST
Category	Multimeter
Language	English