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Series 2600B System SourceMeter® instrument Reference Manual Section 9: TSP command reference

2600BS-901-01 Rev. F/August 2021 9-365

SweepVLogMeasureI()

This KISweep factory script function performs a logarithmic voltage sweep with current measured at every

step (point).

Type

TSP-Link accessible

Affected by

Where saved

Default value

Function

Usage

SweepVLogMeasureI(smuX, startv, stopv, stime, points)

Source-measure unit (SMU) channel (for example, smua applies to SMU channel A)

startv

Sweep start voltage in volts

stopv

Sweep stop voltage in volts

stime

Settling time in seconds; occurs after stepping the source and before making

a measurement

points

Number of sweep points (must be ≥ 2)

Details

Data for current measurements, voltage 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 voltage sweep with current measured at every step (point):

1. Sets the SMU to output startv amperes, allows the source to settle for stime seconds, and

then makes a current measurement.

2. Sets the SMU to output the next volts step, allows the source to settle for stime seconds, and

then makes a current measurement.

3. Repeats the above sequence until the voltage is measured on the stopv volts 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 made at MeasurePoint 1, 2,

3, 4, and 5.

LogStepSize = (log10(stopi) – log10(starti)) / (points – 1)

LogStep = (MeasurePoint – 1) * (LogStepSize)

SourceStepLevel = antilog(LogStep) * startv

Tektronix KEITHLEY 2600B Series User Manual

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