Keithley SourceMeter 2600 Series Reference Manual page 419

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