Faria Maestro, User Manual

Page: 35 / 160

Set Up Chart Plotter
31
Depth Offset
The Depth Offset setting tells Maestro Navigator how to adjust transducer readings to
compensate for where the transducer is located on the hull of the vessel. The accuracy
of your Depth Offset setting affects the accuracy of all depth measurements in Maestro
Navigator. Until you specify a Depth Offset, the depth readings indicate the depth from
wherever the transducer is located on the vessel to the bottom.
The transducer is mounted somewhere between the keel and the waterline on the hull of
the vessel. If you would like your depth readings to show depth from another point (such
as waterline depth, or depth below keel), you must specify a Depth Offset.
The offset is the distance, in vertical feet, between your transducer and the point from
which you wish to measure depth. In setting your Depth Offset, you are telling Maestro
Navigator how to modify the transducer measurement in order to provide the information
that you want. For instance, when you want your depth readings to provide the depth
below keel, specify how far your transducer is above the keel of your vessel. If your
transducer is mounted one foot above the keel, enter a Depth Offset of “-1.0.” This tells
Maestro Navigator to subtract one foot from the depth reported by your transducer (since
the keel is one foot closer to the bottom than the transducer is). As a result, your depth
readings indicate depth below keel.
To see depth readings that reflect surface depth, and your transducer is mounted two
feet below your vessel’s waterline, enter “+2.0.” Maestro Navigator adds two feet to the
amount reported by the transducer, thereby providing waterline depth. Maestro
Navigator’s offset range is from -5.0 feet to +5.0 feet, in six-inch increments. To specify
your offset, touch
Setup, Depth Offset, and select a value from the available options.
To receive waterline depth measurements, specify a positive number. For depth from
keel, specify a negative number.
Note!
Depth reading accuracy depends on proper calibration of your transducer’s position in
the water column. Refer to your depth sounder user manual to ensure that your system
is properly calibrated.