Keithley 2461, Reference Manual, Page: 768 / 1109

Model 2461 Interactive SourceMeter® Instrument Reference Manual Section 8: TSP command reference
2461-901-01 A/November 2015 8-95
bufferVar .times
The time when the instrument made the readings. See
bufferVar.times (on page 8-37).
bufferVar .timestamps
The timestamps of readings stored in the reading buffer. See
bufferVar.timestamps (on page 8-38).
bufferVar .relativetimestamps
The timestamps, in seconds, when each reading occurred
relative to the timestamp of reading buffer entry number 1. See
bufferVar.relativetimestamps (on page 8-28).
bufferVar .sourceunits
The units of measure of the source. See bufferVar.sourceunits
(on page 8-32).
bufferVar .seconds
The nonfractional seconds portion of the timestamp when the
reading was stored in UTC format. See bufferVar.seconds (on
page 8-29).
bufferVar .fractionalseconds
The fractional portion of the timestamp (in seconds) of when
each reading occurred. See bufferVar.fractionalseconds (on
page 8-24).
bufferVar .units
The unit of measure that is stored with readings in the reading
buffer. See bufferVar.units (on page 8-40).
Example 1
reset()
testData = buffer.make(200)
format.data = format.ASCII
format.asciiprecision = 6
trigger.model.load("SimpleLoop", 6, 0, testData)
trigger.model.initiate()
waitcomplete()
printbuffer(1, testData.n, testData.readings, testData.units,
testData.relativetimestamps)
Reset the instrument.
Set the data format and ASCII precision.
Use trigger model SimpleLoop to create a 6 count loop with no delays that stores data in the reading buffer
testBuffer
.
Start the trigger model, wait for the commands to complete, and output the readings.
Use of
testData.n
(
bufferVar .n
) indicates that the instrument should output all readings in the reading
buffer. In this example,
testBuffer.n
equals 6.
Example of output data:
1.10458e-11, Amp DC, 0.00, 1.19908e-11, Amp DC, 1.01858e-01, 1.19908e-11, Amp DC,
2.03718e-01, 1.20325e-11, Amp DC, 3.05581e-01, 1.20603e-11, Amp DC, 4.07440e-01, 1.20325e-
11, Amp DC, 5.09299e-01
Example 2
for x = 1, testData.n do
printbuffer(x,x,testData, testData.units, testData.relativetimestamps)
end
Using the same buffer created in Example 1, output the readings, units and relative timestamps on a separate
line for each reading.
1.10458e-11, Amp DC, 0.00
1.19908e-11, Amp DC, 1.01858e-01
1.19908e-11, Amp DC, 2.03718e-01
1.20325e-11, Amp DC, 3.05581e-01
1.20603e-11, Amp DC, 4.07440e-01
1.20325e-11, Amp DC, 5.09299e-01