Section 6: Characterization of power discretes
Model 2651A High Power System SourceMeter® Instrument User's Manual
6-16
2651A-900-01 Rev. A / March 2011
Example program usage
The functions of this script allow the sweep parameters of the test to be adjusted without having to
rewrite and rerun the script. A test can be executed by calling the function
IV_Curves(gstart,
gstop, gsteps, dstart, dstop, dsteps, pulseWidth, pulsePeriod, pulseLimit)
with the appropriate values passed to it in its parameters.
IV_Curves() parameters
Parameter
Units
Description
gstart
Volts
The level of the first step in the gate sweep
gstop
Volts
The level of the last step in the gate sweep
gsteps
Volts
The number of steps in the gate sweep
dstart
Volts
The level of the first step in the drain/collector sweep
dstop
Volts
The level of the last step in the drain/collector sweep
dsteps
Not
applicable
The number of steps in the drain/collector sweep
pulseWidth
Seconds
The width of the pulse in the drain/collector sweep
pulsePeriod
Seconds
The time between the start of consecutive pulses in the
drain/collector sweep
pulseLimit
Amperes
The current limit of the pulses in the drain/collector sweep
An example call to this function is as follows:
IV_Curves(5, 9, 5, 0, 10, 21, 300e-6, 30e-3, 50)
This call sweeps the drain of the device from 0 V to 10 V in 21 points. The points of this sweep are
gathered using pulsed measurements with a pulse width of 300 µs and a pulse period of 30 ms for a
1 percent duty cycle. These pulses are limited to a maximum of 50 A. This sweep is performed at five
different gate voltages, starting with 5 V and ending at 9 V. The resulting data from this test will be
returned in a Microsoft
®
Excel
®
compatible format (you can cut and paste the output from the console)
that can be used for graphing and analysis.
