Action Overruns On Hardware Lines; Timers; Timer Attributes; Timer Delays - Tektronix KEITHLEY System SourceMeter 2636B Reference Manual

Series 2600B System SourceMeter® Instrument Reference Manual

Action overruns on hardware lines

An action overrun occurs when a trigger event is received before the digital I/O or TSP-Link
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
6-28). Use the status model to monitor for the occurrence of action overruns. For details, see the
Status model

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
The count sets the number of events to generate each time the timer generates a trigger event. Each
event is separated by the delay set by the trigger.timer[N].delay command.
To configure the count, use the command trigger.timer[N].count.
Set the count number to 0 (zero) to cause the timer to generate trigger events indefinitely.

Timer delays

Timers can be configured to perform the same delay each time or configured with a delay list that
allows the timer to sequence through an array of delay values. All delay values are specified in
seconds.
A delay is the period after the timer is triggered and before the timer generates a trigger event. The
programming example below illustrates how to configure timer 3 for a 10 s delay:
trigger.timer[3].delay = 10
You can configure a custom delay list to allow the timer to use a different interval each time it
performs a delay. Each time the timer generates a trigger event, it uses the next delay in the list. The
timer repeats the delay list after all the elements in the delay list have been used. The programming
example below illustrates how to configure timer 3 for delays of 2, 10, 15, and 7 s:
-- Configure timer 3 to complete delays of 2 s, 10 s,
-- 15 s, and 7 s.
trigger.timer[3].delaylist = {2, 10, 15, 7}
2600BS-901-01 Rev. E / January 2019
(on page 9-15, on page D-1).
Section 6: Triggering
®
Hardware trigger modes
line is
(on page
6-13