2600AS-901-01 Rev. B / September 2008 Return to Section Topics 10-11
Series 2600A System SourceMeter® Instruments Reference Manual Section 10: Triggering
Figure 10-5
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 for digital I/O and TSP-Link synchronization lines.
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 2600A has 8 independent timers.
Timer attributes
Each timer has four attributes that can be configured.
Count
Configures the number of events to generate each time the timer is triggered. 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.
SMU A
Hardware triggers
DIGITAL I/O
(line 4)
DIGITAL I/O
(line 2)
Trigger event:
digio.trigger[2].EVENT_ID
Trigger event:
smua.trigger.SWEEP_COMPLETE_EVENT_ID
Stimulus input:
smua.trigger.source.stimulus
Stimulus input:
digio.trigger[4].stimulus
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