Keithley 2651A Reference Manual page 338

Section 7: Command reference
Usage
f, msg = ConfigPulseIMeasureVSweepLog(smu, bias, start, stop, limit, ton, toff,
points, buffer, tag, sync_in, sync_out, sync_in_timeout, sync_in_abort)
f, msg = ConfigPulseIMeasureVSweepLog(smu, bias, start, stop, limit, ton, toff,
points, buffer, tag, sync_in, sync_out, sync_in_timeout)
f, msg = ConfigPulseIMeasureVSweepLog(smu, bias, start, stop, limit, ton, toff,
points, buffer, tag, sync_in, sync_out)
f, msg = ConfigPulseIMeasureVSweepLog(smu, bias, start, stop, limit, ton, toff,
points, buffer, tag, sync_in)
f, msg = ConfigPulseIMeasureVSweepLog(smu, bias, start, stop, limit, ton, toff,
points, buffer, tag)
f
msg
smu
bias
start
stop
limit
ton
toff
points
buffer
tag
sync_in
sync_out
sync_in_timeout
sync_in_abort
Details
Data for pulsed voltage measurements are stored in the reading buffer specified by the buffer input parameter.
Configures a logarithmic pulsed current sweep with a voltage measurement at each point. Measurements are
made at the end of the ton time.
The magnitude of the first pulse will be start amperes; the magnitude of the last pulse will be stop amperes.
The magnitude of each pulse in between will be LogStep
LogStepSize = (log10(stop) - log10(start)) / (points -1)
LogStepn = (n - 1) * (LogStepSize), where n = [1, points]
SourceStepLeveln = antilog(LogStepn) * start
This function does not cause the specified smu to output a pulse train. It simply checks to see if all of the pulse
dimensions are achievable, and if they are, assigns the indicated tag or index to the pulse train. The
InitiatePulseTest(tag) function is used to initiate a pulse train assigned to a valid tag.
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Model 2651A High Power System SourceMeter® Instrument Reference Manual
A Boolean flag; this flag will be true when the pulse was successfully configured, false
when errors were encountered
A string message; if the f flag is false, msg will contain an error message; if it is true, msg
will contain a string indicating successful configuration
®
System SourceMeter instrument channel (set to smua)
Bias level in amperes
Pulse sweep start level in amperes
Pulse sweep stop level in amperes
Voltage limit (for example, compliance) in volts
Pulse on time in seconds
Pulse off time in seconds
Number of pulse-measure cycles
Reading buffer where pulsed measurements will be stored; if this is nil when the function is
called, no measurements will be made when the pulse train is initiated
Numeric identifier to be assigned to the defined pulse train
Defines a digital I/O trigger input line; if programmed, the pulse train will wait for a trigger input
before executing each pulse (this parameter is optional)
Defines a digital I/O trigger output line; if programmed, the pulse train will generate a trigger
output immediately before the start of ton (this parameter is optional)
Specifies the length of time (in seconds) to wait for input trigger; default value is 10 s
Specifies whether or not to abort pulse if input trigger is not received. If pulse aborts because
of a missed trigger, a timer timeout message is returned; true or false
amperes larger than the previous pulse, where:
n
2651A-901-01 Rev. A / March 2011