19-34 Return to Section Topics 2600AS-901-01 Rev. B / September 2008
Section 19: Remote Commands Series 2600A System SourceMeter® Instruments Reference Manual
Remarks • You can express the mode as a number (0 through 8) or you can use one of the
pre-defined constants.
• The custom variable mode stores the trigger mode as a numeric value when the attribute is read.
• The default trigger mode for a line is digio.TRIG_BYPASS. In this mode, the line can be directly
controlled as a digital I/O line. When programmed to any other mode, the output state of the I/O
line is controlled by the trigger logic and the user-specified output state of the line will be ignored.
• To control the line state, use the digio.TRIG_BYPASS mode with the digio.writebit and the
digio.writeport commands.
Details See Triggering in Section 10.
Also see digio.writebit, digio.writeport
Example Sets the trigger mode for the I/O line 7 to digio.TRIG_RISINGM:
digio.trigger[7] = 8
digio.trigger[N].overrun
Replace N with the number of the digital I/O trigger line: 1 to 14
Attribute Use this attribute to read the trigger detector overrun status.
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage overrun = digio.trigger[n].overrun
overrun The trigger overrun state.
n The trigger line.
Remarks • A read-only attribute.
• Indicates an event was ignored because the event detector was in the detected state when the
event was detected.
• Indicates the overrun state of the event detector built into the line itself.
• It does not indicate whether an overrun occurred in any other part of the trigger model or in any
other detector that is monitoring the event.
• It does not indicate output trigger overrun. Output trigger overrun indications are provided in the
status model.
digio.trigger[N].pulsewidth
Replace N with the number of the digital I/O trigger line: 1 to 14.
Attribute The length of time that the trigger line will be asserted for output triggers.
Default 10e-6.
TSP-Link
accessibility
This attribute can be accessed from a remote TSP-Link node.
Usage width = digio.trigger[n].pulsewidth -- Reads pulse width.
digio.trigger[n].pulsewidth = width -- Writes pulse width.
width The pulse width (seconds).
n The trigger line.
Remarks • Setting pulsewidth to 0 (seconds) asserts the trigger indefinitely.
• The default pulsewidth time is 10µs.
Details See Interactive triggering in Section 10.
Also see digio.trigger[N].release
Example Sets the pulse width for trigger line 4 to 20µs:
digio.trigger[4].pulsewidth = 20e-6
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