c. Push the Source side-menu button
d. Select and click the waveform data source (CH1-CH4, Math, FFT).
NOTE. The selected waveform must be displayed on the screen to save
waveform data.
e. Push the To side-menu button.
f. Select and click Ref1 or Ref2.
g. Push the Save side-menu button.
7. To save waveform data to a file on the USB drive:
a. Push the Save To side-menu button.
b. Select and click USB File (*.ISF) or USB File (*.CSV). See About
waveform data files on page 131.
c. Push the Source side-menu button
d. Select and click the waveform data source (CH1-CH4, Math, FFT,
Ref1, Ref2).
NOTE. The selected waveform must be displayed on the screen to save
waveform data.
e. Push the Save side-menu button to save the waveform data to an
automatically named file on the USB drive. See About automatically
generated file names on page 146.
About waveform data files
■
.ISF (Internal File Format): Sets the oscilloscope to save waveform data
from analog channels (and math and reference waveforms derived from
analog channels), in internal waveform save file (ISF) format. This format is
the fastest to write and creates the smallest-sized file. Use this format if you
intend to recall a waveform to reference memory for viewing or measuring.
■
.CSV (comma separated values): Sets the oscilloscope to save waveform
data as a comma-separated data file compatible with popular spreadsheet
programs. This file cannot be recalled to reference memory. A CSV file is
significantly larger than an ISF file, and takes longer to write to the USB
drive.
■
To find out the channel for which the file was written, open the file in a text
editor. The channel name is in the top few lines of the file.
Saving data
TBS2000B Series Oscilloscopes User Manual 131
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