Sequoia LISST-200X, Руководство пользователя

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LISST-
200X User’s Manual
73 LISST-200X Operation Details
The second indictor of misalignment is high value on the inner rings.
The inner rings are shown on the left side of the background display.
The most important rings for misalignment indication are rings 1-4 in
the background scatter file. If the focused laser starts to move away
from the center of the ring detector it will scatter more light onto the
inner rings. This will cause the inner ring values to be much higher
than the factory values, and cause the transmitted laser power to
decrease.
It must be noted that low laser power or high inner rings may not
always indicate misalignment. Low laser power can also occur
because the windows or water is dirty or if there are bubbles on the
window. Large particles or bubbles can cause the inner rings to be
higher than factory values. All of the other possibilities must be
eliminated before it can be concluded that the instrument is misaligned.
If necessary, the LISST-200X can be aligned by Sequoia Scientific or
an authorized service representative.