Tektronix Keithley SourceMeter 2470, Справочное руководство

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Section 6: Reading buffers 2470 High Voltage SourceMeter Instrument Reference Manual
6-30 2470-901-01 Rev. A /
May
2019
Reading buffer time and date values
Time and date values are represented as a number of UTC seconds since 12:00 a.m. Jan. 1, 1970.
Use the following TSP commands to return values in the following formats:
•
Hours and minutes: bufferVar.times (on page 14-38)
•
UTC seconds: bufferVar.seconds (on page 14-30)
•
Month, day, year, format, or to access the timestamp table: bufferVar.dates (on page 14-20)
For example, to return the hours and minutes of the readings in
defbuffer1
, send the command:
printbuffer(1, 5, defbuffer1.times)
The return is similar to:
20:30:16, 20:30:16, 20:30:16, 20:30:16, 20:30:16
Reading buffer for . . . do loops
The following TSP examples illustrate the use of
for . . . do
loops when recalling data from a
reading buffer called
mybuffer
. The following code may be sent as one command line or as part of a
script. Example outputs follow the line of code. Also see the printbuffer() (on page 14-100) command.
This example loop uses the
printbuffer()
command to show the reading, units, and relative
timestamps for all readings stored in the reading buffer. The information for each reading (reading,
units, and relative timestamps) is shown on a single line with the elements comma-delimited.
for x = 1, mybuffer.n do
printbuffer(x, x, mybuffer, mybuffer.units, mybuffer.relativetimestamps)
end
Example comma-delimited output of above code:
-1.5794739960384e-09, Amp DC, 0
-1.5190692453926e-11, Amp DC, 0.411046134
-2.9570144943758e-11, Amp DC, 0.819675745
-2.9361919146043e-11, Amp DC, 1.228263492
-3.0666566508408e-11, Amp DC, 1.636753752
-4.0868204653766e-11, Amp DC, 2.034403917