VDO Ocean Line Combi Montage- Und Bedienungsanleitung Seite 46

Calibration factor C is calculated in accordance with the formula:
Actually covered distance (A-B) + (C-D)
C=
Display indication (A-B) + (C-D)
Do not use the GPS Navigator as a reference for calibration
of the VDO Ocean Line Combi.
The GPS Navigator indicates speed over ground (SOG) an.
The VDO Ocean Line Combi however, measures speed
through the water.
OFFSET = keel depth
3.4.9 Adjustment of keel depth (Change Keel Settings)
Select whether the indicator is to show depth below keel/drive or depth
below oscillator.
SHOW DEPTH UNDER KEEL
NO
If you select "NO", the menu point is exited and the indicator shows the
depth below the oscillator.
SHOW DEPTH UNDER KEEL
YES
If you select "YES", you will be requested to enter the keel depth
(difference lower edge transmitter – bottom of keel/drive).
SHOW DEPTH UNDER KEEL
YES
Hold down push-button until "YES" flashes briefly.
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