Keithley 2601 Reference Manual page 385

Series 2600 System SourceMeter® Instruments Reference Manual
Table 13-5
KIGeneral TSP test script: SweepILogMeasureV
TSP project name:
TSP test script name:
Firmware version:
Function:
SweepILogMeasureV(smu, starti, stopi, stime, points)
Description
Parameters
Data
2600S-901-01 Rev. C / January 2008
KIFactoryGeneral
KIGeneral
1.0.2 and later
Performs a logarithmic current sweep with voltage measured at every step
(point):
• Sets the to output
smu
seconds and then performs a voltage measurement.
stime
• Sets the to output the next amps step, allows the source to settle for
smu
seconds and then performs a voltage measurement.
stime
• Repeats the above sequence until the voltage is measured on the
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
smu, starti, stopi, stime, points
SourceMeter channel (A or B). Defaults to SMU A if all
smu:
parameters are omitted when function is called.
Sweep start current in amps.
starti:
Sweep stop current in amps.
stopi:
Settling time in seconds. Occurs after stepping the source and
stime:
before performing a measurement.
Number of sweep measure points (must be
points:
Voltage measurements, current source values and timestamps are stored in
smuX.nvbuffer1.
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amps, allows the source to settle for
starti
Section 13: Factory Scripts
stopi
≥ 2).
13-7