Section 3: Functions and features
2606B System SourceMeter® Instrument Reference Manual
3-40
2606B-901-01 Rev. B / May 2018
Trigger configuration on hardware lines
The 2606B can be configured to send digital signals to trigger external instruments. Linking these
output triggers to the completion of certain source-measure actions enables hardware handshaking.
The programming example below illustrates this.
-- Configure the 2606B to detect a rising
-- edge on digital I/O line 2.
digio.trigger[2].mode = digio.TRIG_RISINGA
digio.trigger[2].clear()
-- Configure SMU A to start its source action when a
-- trigger event occurs on digital I/O line 2.
smua.trigger.source.stimulus = digio.trigger[2].EVENT_ID
-- Configure digital I/O line 4 to output a 1 ms
-- rising-edge trigger pulse at the completion of
-- SMU sweep.
digio.trigger[4].mode = digio.TRIG_RISINGM
digio.trigger[4].pulsewidth = 0.001
digio.trigger[4].stimulus = smua.trigger.SWEEP_COMPLETE_EVENT_ID
This example’s triggering setup is shown in the following figure.
Figure 54: 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
3-54). Use the status model to monitor for the occurrence of action overruns. For details, see the
(on page 5-12, on page E-1).
