Keithley 2657A User Manual

Section 3: Functions and features Model 2657A High Power System SourceMeter® Instrument Reference Manual
3-40 2657A-901-01 Rev. B/December 2012
Figure 44: Using trigger events to start actions
A stimulus input can be configured to monitor for only one trigger event ID at a time. To monitor more
than one event, use an event blender.
See Event blenders
(on page 3-48) for more information.
Action overruns
An action overrun occurs when a trigger object receives a trigger event and is not ready to act on it.
The action overruns of all trigger objects are reported in the operation event registers of the status
model. Please refer to Status model
(on page E-1) and the appropriate sections on each trigger
object for further details on conditions under which an object generates an action overrun.
Digital I/O port and TSP-Link synchronization lines
The Model 2657A has two sets of hardware lines that can be used for triggering: 14 digital I/O lines
and three TSP-Link
®
synchronization lines. These trigger objects can be configured and controlled in
the same way.
See Digital I/O
(on page 3-80) for more information about connections and direct control of the digital
I/O and TSP-Link synchronization lines.
Common attributes
Mode
Indicates the type of edge the hardware lines detect as an external input trigger. Mode also indicates
the type of signal generated as an external output trigger. The following table describes the hardware
trigger modes for the hardware trigger lines. The hardware trigger modes are described in more detail
in Hardware trigger modes
(on page 3-55).
SMU A
Hardware triggers
DIGITAL
I/O
(line 2)
Trigger event:
smua.trigger.SOURCE_COMPLETE_EVENT_ID
digio.trigger[2].stimulus
Stimulus input:
Legend:
= Trigger object
= External input trigger
= External output trigger
= Trigger events
= Stimulus input

Keithley 2657A Specifications

General

Brand	Keithley
Model	2657A
Category	Measuring Instruments
Language	English