Simrad AP28, Руководство оператора

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Setup at installation | 77
Depth calibration
This adjustment only applies to “smart” depth transducers
that outputs depth on NMEA2000 format.
The default value for the depth offset is 0.0, which
indicates the displayed depth from the transducer to the
seabed (b). Refer to the illustration on next page.
The value should be increased or decreased, depending
on whether the depth reading should be from the water
line or from the keel respectively:
-
A negative offset equal to the vertical distance
from the transducer to the keel will display the
depth as measured from the keel (a)
-
A positive offset equal to the vertical distance
from the transducer to the water line will
display the depth as measured from the water
line (c)