Keithley 2651A Reference Manual page 334

Section 7: Command reference
f
msg
smu
bias
level
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 current pulse train with a voltage measurement at each point. Measurements are made at the end
of the ton time.
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 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
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.
Figure 98: ConfigPulseIMeasureV()
Measurement
(1/NPLC seconds)
bias
ton
Pulse initiated here
Last source value before pulse train was initiated
pulse level
level
toff
2651A-901-01 Rev. A / March 2011