Humminbird 700059-1 Installation Manual page 2

Inside the Hull Mounted Transducer
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.
NOTE: The transducer cannot transmit through air, so the water is necessary to purge any air from between the
transducer and the hull, and to fill any voids in the coarse fiberglass surface of the hull.
5. View the sonar signal on the control head display and compare it against what you 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, continue 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 control head. If
depth performance is required, test the transducer in water at the desired depth. If the performance is
acceptable, continue to step 7. If the performance is not acceptable, repeat steps 3 through 6.
7. Once you have determined the best mounting location using this procedure, mark the position of the
transducer.
3.
Installing the Transducer
1. Mark the location of the transducer and remove the water from inside the hull. Thoroughly dry the
mounting surface.
2. Mix an ample quantity of two-part slow-cure epoxy. Coat the face of the transducer and the inside of
the hull.
3. See the illustrations Transducers with Directional Bias and Transducers without Directional Bias.
Identify your transducer shape to determine how it needs to be oriented inside the hull. (You will install
the transducer in step 4.) It is important to consider the following:
• If you have a Transducer with Directional Bias, use the illustration to confirm which end of the
transducer points forward to the bow of the boat.
• If you have an angled-style transducer, position the transducer so it transmits straight down and
remains in parallel alignment with the keel.
• If you have a puck transducer (round), it does not need to be set in a certain direction unless it is
also an angled-style transducer. See Transducers without Directional Bias.
4. Press the transducer in place with a slight twisting motion to purge any trapped air from underneath.
5. Weight the transducer so that it does not move while the epoxy is curing.
6. When the epoxy has cured, no water will be necessary inside the hull, and water or spilled gasoline or
oil will not affect the performance of the transducer.
4.
Routing the Cable
Use the following instructions to route the cable to the control head or black box sonar, depending on your
system configuration.
NOTE: Your boat may have a pre-existing wiring channel or conduit that you can use for the transducer cable.
1. Unplug the other end of the transducer cable from the control head.
2. Route and secure the cable, avoiding areas where it may be damaged or interfere with normal boating
operations.
530509-6_E
Transducers with Directional Bias
NOTE:
The transducers shown below
have a directional bias, and therefore
need to be oriented according to the
illustration below.
forward
Transducers without
Directional Bias
NOTE:
The transducers shown below
have no directional bias.
Apply the Epoxy
2