Keithley SourceMeter 2602 Reference Manual

Series 2600 System SourceMeters Reference Manual Instrument Control Library 12-79
Return to Section 12 topics 2600S-901-01 Rev. A / May 2006
Remarks
• The smuX.measureYandstep function performs a measurement and then sets the
source to
sourcevalue. The smuX.measureivandstep function is similar, but
performs two measurements; one for current (i) and one for voltage (v).
• The specified source value should be appropriate for the selected source function.
For example, if the source voltage function is selected, then
sourcevalue is
expected to be a new voltage level.
• Both source and measure auto range must be disabled before using this function.
• This function is provided for very fast execution of source-measure loops. The
measurement will be made prior to stepping the source. Prior to using this function,
and before any loop this function may be used in, the source value should be set to
its initial level.
Also see smuX.measure.Y
Example This Model 2601/2602 measure and step function measures current starting at a
source value of 0V. After each current measurement, the source is stepped 100mV for
the next current measurement. The final source level is 1V where current is again
measured.
local ivalues = {}
smua.source.rangev = 1
smua.source.levelv = 0
smua.measure.rangei = 0.01
smua.source.output = smua.OUTPUT_ON
for index = 1, 10 do
ivalues[index] = smua.measureiandstep(index / 10)
end
ivalues[11] = smua.measure.i()
smuX.nvbufferY
X = SMU channel (a or b)
Y = NV buffer (1 or 2)
Attribute Non-volatile reading buffers.
Usage
smuX.nvbufferY
Remarks
• There are two reading buffers: smuX.nvbuffer1 and smuX.nvbuffer2.
• All routines that return measurements can return them in reading buffers.
Overlapped measurements are always returned in a reading buffer. Synchronous
measurements return either a single-point measurement or can be stored in a
reading buffer if passed to the measurement command.
• The non-volatile reading buffers will retain their data between power cycles.
Details See “Reading buffers” in this section and in Section 7.
Also see smuX.makebuffer, smuX.measure.overlappedY, smuX.measure.Y
Example Store current readings from SMU A into buffer 1:
smua.measure.overlappedi(smua.nvbuffer1)

Keithley SourceMeter 2602 Specifications

General

Brand	Keithley
Model	SourceMeter 2602
Category	Measuring Instruments
Language	English