Final Testing; Inside The Hull Transducer Installation; Locating The Transducer Mounting Position; Trial Installation - Humminbird 610 Installation And Operation Manual

531440-1_B - HDR610 Manual_Eng.qxd
3. Place the escutcheon plate over the cable hole and use it as a guide to mark the two
escutcheon plate mounting holes. Remove the plate, drill two 9/64" dia. (3.5 mm) x 5/8"
deep (16 mm) holes, then fill both holes with marine-grade silicone sealant. Place the
escutcheon plate over the cable hole and attach with two #8 x 5/8" (16 mm) wood screws.
4. Route and secure the cable by attaching the cable clamp to the transom; drill one 9/64"
dia. (3.5 mm) x 5/8" deep (16 mm) hole, then fill hole with marine-grade silicone sealant,
then attach the cable clamp using a #8 x 5/8" (16 mm) screw.
5. Plug the other end of the transducer cable back into the depthsounder connection holder.

7. Final Testing

After transom transducer installation, please perform the final testing and then finalize the
installation (see Test and Finish the Installation).

INSIDE THE HULL TRANSDUCER INSTALLATION

NOTE: If you have a puck transducer, please use the procedure found in the Inside the Hull
Mounting, Puck Transducers Only section instead.
In-hull mounting generally produces good results in single-
thickness fiberglass-hulled boats. Humminbird® cannot guarantee
depth performance when transmitting and receiving through the
hull of the boat, since some signal loss occurs. The amount of loss
depends on hull construction and thickness, as well as the
installation position and process.
This installation requires slow-cure two-part epoxy. Do not use
silicone or any other soft adhesive to install the transducer, as this
material reduces the sensitivity of the unit. Do not use five-minute
epoxy, as it has a tendency to cure before all the air bubbles can
be purged, thus reducing signal strength.
NOTE: In-hull mounting requires an installed and operational
depthsounder.
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Transducer Mounted Inside
the Hull
Preferred Mounting Area

1. Locating the Transducer Mounting Position

Decide where to install the transducer on the inside of the hull. Consider the following to find the
best location:
• Observe the outside of the boat hull to find the areas that are mostly free from turbulent
water. Avoid ribs, strakes and other protrusions, as these create turbulence.
• As a general rule, the faster the boat can travel, the further aft and closer to the centerline
of the hull the transducer has to be located in order to remain in contact with the water
at high speeds.

2. Trial Installation

You will not be able to adjust the mounting after an inside the hull transducer is installed. It is
best, therefore, to perform a trial installation first that includes running the boat at various speeds,
in order to determine the best mounting area before permanently mounting the transducer.
1. Plug the transducer into the depthsounder, then power up the depthsounder. When the
depthsounder detects a functioning transducer, it will automatically enter Normal
operating mode.
2. View the sonar signal at its best by holding the transducer over the side, immersed in the
water, so that it is pointing straight down over a known flat bottom. Use the display to
benchmark against the sonar signal that will be detected once the transducer is placed in
the hull.
3. Place the transducer body face down at the identified mounting location inside the hull,
with the pointed end towards the bow.
4. Fill the hull with enough water to submerge the transducer body. Use a sand-filled bag or
other heavy object to hold the transducer in position. The transducer cannot transmit
through air, and the water purges any air from between the transducer and the hull, and
fills any voids in the coarse fibergalss surface.
5. View the sonar signal on the display and compare against what was observed in Step 2,
making sure that the boat is in the same location as it was during your observations in Step
2. If the results are comparable, move on to Step 6. Otherwise, locate a new position in
the hull and repeat Steps 3 through 5.
6. Run the boat at various speeds and water depths while observing the screen on the
depthsounder. If depth performance is required, test the transducer in water at the
desired depth. If the performance is acceptable, move on to Step 7. If the performance
is not acceptable, repeat Steps 3 through 6.
7. Once you have determined the best mounting location using the above steps, mark the
position of the transducer.
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