Sequoia LISST-100X, Руководство пользователя

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16 LISST-100X User’s Guide
Step 10:
Acquiring
Background
Scattering
The background scattering measurement is critical to good
instrument performance. It is especially critical for clean water
applications where the optical transmission is greater than 90%
over the 5 cm path. The background scattering will also check
the overall health of the instrument. It will verify that all of the
systems are functioning and that the optics is still in alignment.
The current background will be acquired and displayed relative
to the factory background scattering for the instrument. The
image below shows an example of this display. It is opened by
either selecting
Collect Background Scatter Data from the LISST
menu or by pressing the button on the toolbar. After
selecting the factory background scatter file to use for
comparison the window will display.
When the BEGIN Collect button is pressed 20 samples will be
displayed to the screen as they are acquired. After all 20 are
collected the average will be displayed. If the values are
acceptable the values can be saved to a file. Enter the filename
in the box and press the
Accept and Save button.
NOTE: If you have already saved a background file, then decide
to do another one and you click Accept and Save, the
background file you just saved will be overwritten without any
warning.