Raymarine i70, Руководство по установке

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5.4 Depth calibration
Depth Offset
Depths are measured from the transducer to the sea bed, but you
can apply an offset value to the depth data, so that the displayed
depth reading represents the depth to the sea bed from either the
keel or the waterline.
Before attempting to set a waterline or keel offset, find out the
vertical separation between the transducer and either the waterline
or the bottom of the keel on your vessel, as appropriate. Then use
the depth instrument to set the appropriate offset value.
D9343--2
1 2 3
1 Waterline offset
2 Transducer / Zero offset
3 Keel offset
If an offset is not applied, displayed depth readings represent the
distance from the transducer to the sea bed.
Setting the depth offset
1. From the relevant conventional or smart transducer page
highlight and select Depth offset ,
2. Highlight and select Depth from .
You will now set the position that depth shall be monitored from
on the vessel.
3. Highlight and select from the following choices:
• Keel
• Transducer
• Waterline
After selecting you will be returned to the Depth Offset page.
4. Highlight and select Offset .
5. Use the UP and DOWN buttons to adjust the offset to the
required value.
6. Press SAVE to save the offset value.
Note: Incorrect depth offset may lead to vessel running aground.
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i70 Instrument display Installation instructions