Tektronix KEITHLEY SourceMeter 2606B Reference Manual page 728

Model 2606B System SourceMeter® Instrument Reference Manual
SweepILogMeasureV()
This KISweep factory script function performs a logarithmic current sweep with voltage measured at every
step (point).
Type TSP-Link accessible
Function No
Usage
SweepILogMeasureV(smuX, starti, stopi, stime, points)
X
starti
stopi
stime
points
Details
Data for voltage measurements, current source values, and timestamps are stored
in smuX.nvbuffer1.
If all parameters are omitted when this function is called, this function is executed with the parameters
set to the default values.
Performs a logarithmic current sweep with voltage measured at every step (point):
1. Sets the SMU to output starti amperes value, allows the source to settle for stime seconds,
and then performs a voltage measurement.
2. Sets the SMU to output the next amperes step, allows the source to settle for stime seconds,
and then performs a voltage measurement.
3. Repeats the above sequence until the voltage is measured on the stopi amperes 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 five-point sweep (points = 5), a measurement is performed at MeasurePoint 1,
2, 3, 4, and 5.
LogStepSize = (log10(stopi) – log10(starti)) / (points – 1)
LogStep = (MeasurePoint – 1) * (LogStepSize)
SourceStepLevel = antilog(LogStep) * starti
2606B-901-01 Rev. C November 2021
Affected by Where saved
Source-measure unit (SMU) channel (for example, smua.reset() applies to SMU
channel A)
Sweep start current in amperes
Sweep stop current in amperes
Settling time in seconds; occurs after stepping the source and before making
a measurement
Number of sweep points (must be ≥ 2)
Section 15: TSP command reference
Default value
15-355