Section 9: Generating a high-current pulse train
Model 2460 Interactive SourceMeter® Instrument User's Manual
9-6
2460-900-01 Rev. A / September 2014
The following figure illustrates these test parameters.
Figure 52: Timing diagram for the example
Set up the source and measure functions
To generate high-speed, high-current pulses and measure the voltage during each pulse, it is
important to configure the measure and source functions appropriately.
To minimize measure time:
•
Set the voltage measure range to a fixed range.
•
Set the integration rate of the measurement to 0.01 NPLC (166.67 µs).
•
Run autozero once to perform a one-time autozero operation before the start of the trigger model.
For more precise source times:
•
Turn off the source readback feature.
•
If you want to use source readback, you must allow enough time for two measurements: The
voltage measurement and the current source measurement.
•
Set the source delay time to zero.
In this example, the two values for the source (
pulselevel
and
biaslevel
) are stored in a source
configuration list named
OutputList
. This configuration list is recalled by the trigger model.
Set up the trigger model using TSP commands
After you have set up the source and measure functions, configure the trigger model using the
trigger.model.setblock
commands. The blocks in the trigger model execute sequentially, as
shown in the following figure.