Series 2600 System SourceMeters Reference Manual Factory Scripts 13-9
Return to Section 13 topics 2600S-901-01 Rev. A / May 2006
TSP Project Name: KIFactoryGeneral
TSP Test Script Name: KIGeneral
Firmware Version: 1.0.2 and later
Function:
SweepVLogMeasureI(smu, startv, stopv, stime, points)
Description: Performs a logarithmic voltage sweep with current measured at every step
(point):
• Sets the smu to output startv volts, allows the source to settle for stime
seconds and then performs a current measurement.
• Sets the smu to output the next volts step, allows the source to settle for
stime seconds and then performs a current measurement.
• Repeats the above sequence until the current is measured on the stopi
amps step.
The source level at each step (SourceStepLevel) is automatically calculated
as follows:
MeasurePoint = The step point number for a measurement. For example,
for a 5-point sweep (
points = 5), a measurement will be performed at
MeasurePoint 1, 2, 3, 4 and 5.
LogStepSize = (log10(stopi) – log10(starti)) / (points – 1)
LogStep = (MeasurePoint – 1) x (LogStepSize)
SourceStepLevel = antilog(LogStep) x starti
startv
= Current measurement
stopv
stime
stime
stime
Parameters:
smu, startv, stopv, stime, points
smu: SourceMeter Channel (A or B). Defaults to smua if all parameters
are omitted when function is called.
starti: Sweep start voltage in amps.
stopi: Sweep stop voltage in amps.
stime: Settling time in seconds. Occurs after stepping the source and
before performing a measurement.
points: Number of sweep measure points (must be ≥2).
Data: Current measurements, voltage source values and timestamps are stored in
smuX.nvbuffer1.
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