System SourceMeter® Instrument Reference Manual Section 3:
2600BS-901-01 Rev. B / May 2013 3-43
Figure 67: External instrument triggering
Action overruns on hardware lines
An action overrun occurs when a trigger event is received before the digital I/O or TSP-Link
®
line is
ready to process it. The generation of an action overrun is dependent upon the trigger mode selected
for that line. For more details on the causes of action overruns, see Hardware trigger modes (on page
3-57). Use the status model to monitor for the occurrence of action overruns (for details, see the
Status model (on page 5-14, on page E-1
)).
Timers
A timer is a trigger object that performs a delay when triggered. Timers can be used to create delays
and to start measurements and step the source value at timed intervals. When a delay expires the
timer generates a trigger event. The Series 2600B has eight independent timers.
Timer attributes
Each timer has attributes that you can configure. These attributes are described in the following
sections.
Count
Configures the number of events to generate each time the timer generates a trigger event. Each
event is separated by a delay.
To configure the count, use the following attribute: trigger.timer[N].count
Set the count number to 0 (zero) to cause the timer to generate trigger events indefinitely.
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