Humminbird 405SX Fish Finder User Manual


 
3
INSTALLATION PREPARATION
INSTALLATION OVERVIEW
The transducer converts electrical energy from the transmitter into mechanical
pulses or sound waves. The transducer also receives the reflected sound waves
and converts them back into electrical signals for display on the control head. It
should be installed in contact with the surface of the water in an area that has
smooth water flow - usually on the transom of the boat. There are several
mounting options for the transducer. Review the
following section to determine the method that
works for you and your boat.
Determining How to Mount the
Transducer
The 405SX includes a model XT-6-24 transducer.
This transducer can be mounted on the transom
of the boat, or bonded to the inside of a
fiberglass hull boat.
The transom installation, which is the most
widely used, places the transducer on the outside
of the boat hull. This technique produces the
least signal loss, and provides a way to adjust the
transducer after installation. The mounting
hardware included is designed to
protect both the boat and the
transducer should the boat strike
debris in the water or when trailering.
As an alternative to transom mounting,
it is possible on many fiberglass-hulled
boats to glue the transducer on the
inside of the boat hull. Since fiberglass
has similar sonar characteristics as
water, the sonar signal can pass
through the boat hull with minimal
loss. The hull of the boat must be single
layer construction (not double-hulled).
Also, any air trapped in the lamination
of the fiberglass would prevent the
sonar signal from passing through.
Inside the Hull Mounted Transducer
Transom Mounted Transducer
For additional details reference the
TRANSDUCER INSTALLATION section of
the enclosed Installation Sheet.