Section 7: Increasing SMU current sourcing ability Model 2651A High Power System SourceMeter® Instrument User's Manual
Configuring the trigger model
When the trigger model is correctly configured, you can achieve pulsed measurements with precise
timing and current levels up to 100 A for the combined Model 2651A instruments. Refer to the
Example program code
(on page 7-9) for an implementation of this trigger model.
In this trigger model, the master Model 2651A node[1] is configured to control the overall timing of
the sweep. Subordinate Model 2651A node[2] is configured to wait for signals from the master
Model 2651A node[1] that prompt it to pulse.
In this example, the Series 2600A is controlled by script, so its trigger model is not used.
The following figure illustrates the overall trigger model configuration of this test, which synchronizes
the two Model 2651A High Power System SourceMeter
®
Instruments to within 1 µs to provide a single
100 A pulse.
7-6 2651A-900-01 Rev. A / March 2011
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