Lowrance Traditional Manuel utilisateur

Traditional Sonar and DSI Sonar Installation

This document covers the installation of the transducer and display unit installation, which includes con-

necting the unit to power and installing the unit on the bracket mount.

The rst section of the document covers the installation of a traditional sonar skimmer transducer. DSI

sonar installation is covered in the last section of the manual.

Make sure you read all the installation instructions before drilling holes in your vessel!

Traditional Sonar Transducer Installation

One piece bracket (Recommended Tools and Supplies — not included)

Drill Marine grade above-or-below waterline sealant

1” (25mm) or 5/8” (15mm) drill bit Marine grade epoxy (Shoot-thru-hull install only)

#29 (0.136”) (3mm) drill bit Zip ties (trolling motor mount)

Phillips (Slotted-head) screwdriver TMB-S bracket kit (Skimmer trolling motor mount)

NOTE: This majority of this installation does not apply to the GPS only units since they do

not have a transducer. Turn to pages 8-11 for information on mounting the display unit and

connecting the unit to power.

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Traditional Sonar

A. Select a transducer location

To function properly the Skimmer transducer must

be in the water at all times and in a location that has

a smooth ow of water when the boat is moving.

If the transducer is not placed in a smooth ow

of water, interference caused by bubbles and

turbulence may show on-screen as random lines or

dots. The unit also could lose bottom signal when

the boat is on plane.

B. Aligning Ratchets on bracket

You will use the ratchets to ensure the trans-

ducer is installed parallel to the ground.

1. Insert the ratchets in the bracket with the

letter “A” aligned with the dot stamped

on the outside of the transducer bracket.

2. Slide the transducer into the bracket

and temporarily slide the bolt through

the transducer bracket.

Good locations

Poor locations

Ratchet Bracket

NOTE: Mount the transducer at least

one foot away from the engine lower

unit.

Too high

Poor angle

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Traditional Sonar

3. Hold the transducer

assembly against

the transom. Look at

the transducer from

the side. If it is par-

allel to the ground,

then the “A” position

is correct.

4. If the transducer can not be adjusted

so its face is parallel to the ground, re-

move the transducer and ratchets from

the bracket. Reinsert the ratchets into

the bracket, this time with the letter “B”

aligned with the dot stamped in the

bracket. Reassemble the transducer

and bracket and place it against the

transom.

5. Check to see if the transducer will ad-

just so its face is parallel with the ground.

Repeat this process until the transducer can

be adjusted so its face is parallel with the

ground.

C. Assembling the bracket

After determining the correct position for the

ratchets, loosely assemble the transducer and

bracket assembly.

Lock nut

Metal washer

Rubber washers

Ratchets

Metal washer

Bolt

Align dot and

letter "A".

dot

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Traditional Sonar

D. Attaching Transducer to Transom

1. Adjust the transducer so its face is

parallel with the ground and its center

line is even with the bottom of the boat

hull.

2. Hold the transducer and bracket

assembly against the transom. When the

transducer and bracket are properly aligned

mark its position on the hull.

3. Drillthemountingholesforthetransducer

bracket. Use a #29 bit (for the #10 screws).

Routing cables

When mounting your transducer, make sure to

leave some slack in the cable near the transducer. If

you need to drill a hole in the transom to pass the

connector through, the hole size will depend on

the connector on the end of the transducer’s cable.

E. Make test run to determine results

After the transducer is installed make a test run to

ensure the transducer is installed properly. Use the

Transducer face must be

parallel with the ground

Transom

Bottom of

hull

Run the cable over

the bolt and through

the bracket.

Do not over tighten the lock nut;

otherwise transducer may not kick-

up if it strikes an object.

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Traditional Sonar

slots in the transducer mounting bracket to loosen

the screws and slide the transducer up or down, if

adjustments are necessary.

Shoot-thru-hull Skimmer and

Pod transducer installation

Before attempting any installation on boats with

otation material sandwiched within the hull, con-

sult the boat manufacturer. In a shoot-thru-hull in-

stallation the transducer is epoxied to the inside of

the boat hull.

A transducer can not shoot through wood or metal

hulls. Wood and metal hulls require either a tran-

som mount or thru-hull installation. For shoot-

thru-hull applications many boat hulls have a at

keel pad that oers a good transducer mounting

surface.

Make sure the Skimmer transducer is oriented so

the nose of the transducer is facing the bow (front)

of the boat. If the transducer has a built in temp

sensor, it will only show the temperature of the

hull, not the water temp.

Before you epoxy the transducer to the hull, make

sure the area is clean, dry and free of oil or grease.

The surface of the hull must be at so the entire

Transducer epoxied to hull

Epoxy

Transducer

Hull

Keel pad

On vee hulls

try to place the

transducer where

the dead rise is

10° or less.

WARNING: Do not remove material

from the inner hull. Careless grinding

on the hull could damage hull integrity.

Contact the boat dealer or manufacturer

to conrm hull specications.

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Traditional Sonar

transducer face is in contact with the hull. Also, make

sure the cable is long enough to reach the sonar unit.

To use shoot-thru-hull installation:

1. Sand the inside surface of the hull, where

the transducer is to be epoxied, and the

face of the transducer. Sand the hull until

it is smooth to the touch. The sanded

area should be about 1-1/2 times the

diameter of the transducer.

2. After sanding, clean the hull and the face

of the transducer with an alcohol wipe to

remove any dust.

3. Apply a thin layer of epoxy (about 1-16”

or 1.5 mm) on the face of the transducer

and the sanded area on the hull. Be

careful when mounting a transducer

inside a boat hull. Once epoxied into

position, the transducer can be very

difcult to remove. Epoxy is available

at www.lei-extras.com (Part No. 106-

98).

4. Press the transducer into the epoxy,

turning it to force out any air bubbles from

under the transducer face. Make sure

there are no

air pockets

in the epoxy

layers.

5. Stop pressing

when it bottoms

out on the hull.

Apply pressure to hold the transducer in

place while the epoxy sets. Be careful not

to move the transducer while the epoxy

is setting. Allow the epoxy to set before

moving the boat.

Epoxy transducer to hull.

HullEpoxy

Apply epoxy to transducer

face and mounting location.

Sand transducer face

and mounting location

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Traditional Sonar

The top of the Pod

transducer is curved to t

the contour of the trolling

motor, so you do not

need a TMB-S mounting

bracket.

Position the transducer

to so its face is pointing

straight down when the

trolling motor is in the

water.

Flat washer

Lock

nut

Bolt

Internal tooth

washer

Plastic bracket

6. When nished, the face of the

transducer should be parallel with the

hull with a minimum amount of epoxy

between the hull and transducer.

Trolling motor Skimmer and

Pod Installation

The TMB-S trolling motor bracket (Part No. 51-45) is

an optional accessory and is available through LEI

Extras at www.lei-extras.com. The TMB-S bracket

is used to attach a one-piece bracket skimmer

transducer to a trolling motor. The Pod transducer

does not need a TMB-S trolling motor bracket to be

installed on a trolling motor. It only needs a hose

clamp (adjustable strap).

Installing transducer on trolling motor:

1. Attach the skimmer transducer to the

bracket as shown in the diagram.

2. Slide the adjustable strap (hose clamp)

through the plastic bracket on the

skimmer transducer or through the Pod

transducer slots and then slip the strap

around the trolling motor.

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Traditional Sonar

3. Position the transducer so its face is

pointing straight down when the trolling

motor is in the water.

4. Tighten the adjustable strap securely

to the trolling motor. Make sure there is

enough slack in the transducer cable for

the trolling mount to turn freely.

Connecting the unit to power

1. Connect the black wire to a ground.

2. Attach a 3 Amp fuse (not included) to

the end of the power wire and then con-

nect the fuse to the positive (+) terminal

on the battery.

3. Connect the Power cable to the Power

port on the back of the display unit.

Adjustable strap

Plastic ties (not

included)

Transducer

cable

NOTE: Use 18 gauge wire to extend the

power or ground wires.

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Traditional Sonar

12V

Optional paddlewheel

speed/temp sensor

Optional temp

sensor

Black (ground)

wire

3 Amp

fuse (not

included)

Red (power)

wire

Speed/temp port;

also used for NMEA

0183

Power

port

External GPS port

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Traditional Sonar

NMEA 0183 Connection Diagram

Shield (ground) NMEA IN (-)

Yellow TX NMEA IN (+)

NDC-4

NMEA0183

Temp /Speed port

Optional NMEA

0183 cable

(GPS capable units only)

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