Lowrance HOOK-9 - Installation and Calibration; Installation Menu and Keel Offset; Calibration and Transducer Settings

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Sonar Operation | HOOK series
Sonar Operation | HOOK series
Installation
Keel offset
All transducers measure water depth from the
transducer to the bottom. As a result, water depth
readings do not account for the distance from the
transducer to the keel/bottom of motor or from
the transducer to the water surface.
Transducer
A: Keel offset (e.g. -1 foot)
Installation menu
Before setting keel oset, measure the distance
from the transducer to the bottom of the motor
- see illustration. If, for example, the distance is 1
foot, it will be input as (minus) –1 foot.
Water speed calibration
Calibrates a paddlewheel speed sensor with speed
data from a GPS source.
Temperature calibration
Calibrates data from the transducer temperature
sensor with data from a known temperature source
to ensure the accuracy of temperature information.
Reset water distance
Reset Water Distance to zero.
Transducer type
Selects the type of transducer model attached to
your unit.