VEXILAR FL-8SLT Bedienungsanleitung

CONTENTS

General Description 2

Specifications 3

Unit Installation 4

Power Connection 4

Transducer Installation 5 - 8

Operation - 10

Typical Indications 11 - 14

Maintenance 15

Operational Questions & Answers 16 - 20

Transducer Beam Angle Chart 21

Trouble Shooting Chart 22

Accessories and Other Products 23 - 25

Transducers 26 - 27

Service and Support 28

Founded in 1 60, Vexilar, Inc. has a long his-

tory of bringing revolutionary technology to the

sport fishing industry. Just some of the Vexilar

firsts include: the first liquid crystal display, the

first fish alarm, the first three color display, and

the first CRT and straight line paper graphs, for

the sport fisherman. Now, with the FL-8SLT, we bring you the first true

interference Rejection unit. Again, Vexilar leads, while the others follow.

FL-8SLT Operation Manual

GENERAL DESCRIPTION

The FL-8SLT is a compact

and lightweight depth

sounder designed for serious

anglers. Besides indicating

depth, the unit also shows

changes in bottom content and

conditions. It can also dis-

criminate between large

underwater targets, such as

fish, and smaller targets such

as bait fish and plankton.

The unit transmits bursts

of high frequency pulses,

which are converted from

electrical to mechanical energy by the transducer. These "sound" pulses

radiate from the transducer downward and are reflected back up to the

transducer where the energy is converted back to electrical signals. The

FL-8SLT then processes these signals and displays them.

The circular display is accomplished by attaching an LED (Light

Emitting Diode) to a wheel, which is then spun at a high speed in the

clockwise direction. This allows for an extremely high speed update.

The bottom, as well as other targets, can be displayed as red, orange, or

green to indicate strong, medium and weak signals respectively. The FL-

8SLT also has patented Interference Rejection (IR) Technology. This lets

the user "filter out" unwanted interference from another nearby depth

sounder. With two models available, deep and shallow, and a wide vari-

ety of accessories to choose from, the Vexilar FL-8SLT is second to none.

SPECIFICATIONS

Operating Voltage: 10.5 - 15 Volts (12 Volts Nominal)

Current Draw: 200mA

Power Output: 400 Watts (Peak to Peak)

Frequency: 200 kHz

Resolution: 525 Segments

Target Separation: 2.65" Min.

Display Colors: 3 - Red, Orange, and Green

Dimensions: 4.4"H x 6"W x 2.5"D

Weight: 1.1 Lbs.

Dept Scales:

0-20', 0-30', 0-40', 0-60', 0-80', and 0-120' - Shallow Model

0-20', 0-30', 0-40', 0-60', 0-80', and 0-240' - Deep Model

Beam Angle:

If your transducer is not marked, you can determine the beam angle

by the dimensions of the transducer face. Measure the shortest distance

across the face of the transducer. 1 ˚ transducers measure about 1 1/2”.

º and dual beam transducers will be about 2 1/2” across the face.

INSTALLATION

To make the FL-8SLT work, you must provide the unit with power

and mount the transducer in an appropriate location.

UNIT INSTALLATION

Find a convenient place to

mount the unit. This may include

a boat seat, deck, dash, or a

portable case. Make sure that there

is plenty of room for the unit to tilt

and/or swivel freely without the

cables binding behind the unit.

Once you have found a spot,

remove the unit from the gimbal

bracket. Securely attach the brack-

et to the mounting surface.

POWER CONNECTION

Plug the flat 3 pin connector into the back of the unit. Find the clos-

est source of 12 volts and run the cord to it. Keep the cord away from

sharp metal edges and avoid tight places where the cord may get crushed.

Connect the red wire to positive and the black wire to negative or ground.

If the cord provided is not long enough, more can be added. Use 18 gauge

wire minimum. It is recommended that a 1 amp in-line fuse be placed

in the positive line as close to the power source as possible to protect

against any shorts in the wiring.

TRANSDUCER INSTALLATION

There are three basic types of transducers to consider: High Speed,

Puck Style, and the Ice-Ducer System.

HIGH SPEED TRANSDUCERS

High Speed transducers are

designed to be mounted on the transom

of a boat. The wedged shape will cut

the water and give a clear depth read-

ing at any boat speed. Locate a spot

similar to the one in figure E. Keep in

mind that you need clear water flow

across the face of the transducer to

insure a clear reading at all speeds. Stay

away from rivets, ribs, or strakes that

would be just in front of the transduc-

er. They will disturb the water and

scramble the reading. Attach the

mounting bracket to the transducer and

hold it up to the boat where you are

planning to mount it (see figure E).

Mark the holes on the transom, or mounting plate, so that when the bot-

tom of the transducer is flush with the bottom of the boat the holes are

located at the bottom of the bracket slots. This gives you room to "fine

tune" the position of the transducer and optimize your reading after

you've put the back boat in the water. Drill out the holes and tighten the

bracket down securely. Be sure to seal any holes drilled

into the transom with silicone to prevent water from leak-

ing into the boat. Run the transducer cord up to the unit

taking the same care as you did when you ran the power

cord. Plug the transducer connector into the back of the

unit and screw the retaining ring down tight.

Figure E

PUCK STYLE TRANSDUCERS

There are three ways in which a Puck Style trans-

ducer can be mounted. It can be mounted In-Hull, on

an electric trolling motor, or portable (with a suction

cup or on an arm of some type).

IN-HULL MOUNTING

This method, gluing the transducer to the hull, gets the same results

as if you were using the High Speed transducer only there are no holes

to drill in the boat and there is no transducer on the transom to get dam-

aged by impact.

Finding the best location for the transducer before mounting is crit-

ical. Choose a flat smooth spot near the center of the bilge and near the

back of the boat. It is a good idea to make a "test run" before you per-

manently install the transducer to make sure that you can indeed get a

reading through your hull, and when the boat is on plane. Put about a

half inch of water in the bilge and hold the transducer in the intended

location. Move the transducer around until you get the best reading.

Mark the spot.

To install the transducer clean the spot of mud and oil. Using an

epoxy or silicone glue make a puddle about the same diameter as the

transducer on the hull. Place the transducer in the glue. Press it down

firmly, gently twisting it back and forth, making sure that there are no

air bubbles in the glue between the transducer and the hull. Let the glue

dry completely before turning the unit on.

Run the transducer cord up to the unit taking the same care as you

did when you ran the power cord. Plug the transducer connector into

the back of the unit and screw the retaining ring down tight.

TROLLING MOTOR MOUNTING

To attach a Puck Style transducer to a trolling

motor, use a hose clamp or a large cable tie. Notice the

slots in the transducer for this purpose. Locate the

transducer on the bottom of the lower unit as in figure

G. Run the cable up the shaft using cable ties to hold

it in position. Make sure that the movement of the

trolling motor will not damage the cable. Plug the transducer connector

into the back of the unit and screw the retaining ring down tight.

PORTABLE MOUNTING

Optional suction cup brackets can be used to temporarily attach a

transducer to the transom or side of the boat. The cups should be placed

in a location where it will not be torn off when the boat goes high speed.

It is a good idea to tie on a safety rope in case the cup does let go.

There are three suction cup brackets available for the FL-8SLT. The

BK0023 and BK0027 are made to attach the Puck style transducers to a

boat for use at slow speeds. The BK0044 suction cup brackets is made to

attach the high speed transducers to a boat for high speed uses. See page

26 for details.

An arm can also be used to hold the transducer. Simply attach the

transducer to the end of the arm using cable ties or tape. If the arm is

constructed of metal tubing insulate the transducer from the arm by wrap-

ping electrical tape around the arm. This prevents "ringing" which can

be displayed as noise near the surface.

Run the transducer cord up to the unit using cable ties to hold the

cord in place. Plug the transducer connector into the back of the unit and

screw the retaining ring down tight.

Figure G

THE ICE-DUCER™ SYSTEM*

The Ice-Ducer system provides a quick and easy way to set up the

transducer for ice fishing. All of the adjustments needed to find the true

perpendicular point are done automatically. To use the Ice-Ducer, sim-

ply adjust the transducer to the desired depth and drop the assembly in

the ice hole.

There are three main com-

ponents to the Ice-Ducer system.

They include the transducer,

float, and the stop. The trans-

ducer comes assembled with the

connector already installed. The

stop is put on by passing the

transducer cord through the slit

in the side of the stop. Make

sure that the tapered or round-

ed end is facing down, toward

the transducer. The float is

installed between the stop and

the transducer by, again, passing the transducer cord through the slit in

the side. Make sure the countersunk hole is facing up towards the top.

To use the Ice-Ducer, adjust the stop to allow the transducer to float

at the desired depth. A six inch minimum is recommended in order to

make sure that the transducer will indeed be pointing straight down.

The most it should be down is to the bottom of the ice hole. If the trans-

ducer is below the bottom of the ice it can cause tangling problems when

bringing in fish.

If you run into problems when using the Ice-Ducer and you can't see

your bait try this, rub the bottom of the transducer with water to elimi-

nate any residue or air film. This insures good contact between the trans-

ducer and the water. Check the length of cord between the float and the

transducer to make sure there are no kinks in the cord that will cause the

transducer to shoot off to the side

*Patent no. 5,546,362

OPERATION

Figure I shows the three main controls of the FL-8SLT.

They include Power and Range control, Gain, and

Interference Rejection.

POWER AND RANGE CONTROL

The knob located at the bottom of the control panel

turns the unit on and selects which range is to be used.

The center position is the Off position. There are six depth

ranges to choose from.

S1 - 0-20' D1 - 0-30'

S2 - 0-40' D2 - 0-60'

S4 - 0-80' D4 - 0-120'

(D8 - 0-240' Deep Model)

To activate the unit and select the appropriate range turn the knob

to the left or right. To read the correct depth on the display you must

correlate your range setting with the proper scale on the display. Notice

that the shallow ranges are marked in white and the deep ranges are

marked in yellow. For a range selection of S1 you would read the white

numbers on the display. For a range selection of S2 you would read the

white numbers times two, and times four for S4. The same is the case for

the D ranges, only you would read the yellow numbers on the display.

For example, figure J shows the leading edge of the bottom at nine

feet on the white scale. With a range setting of S1 you would interpret

this as nine feet deep. With a range setting of S2 you would interpret this

as 18 feet deep. With a range setting of D1 you would look at the yellow

numbers and read the depth as slightly over 13 feet deep. D2 would read

26 feet. A setting of D4 would read the depth at 52 feet (13 x 4).

Figure I

GAIN CONTROL

The knob located at the top of the control panel is the gain control.

This controls the amount of signal that you see on the display. A gain

setting of zero will display a minimum amount of signal while a gain set-

ting of ten will show the maximum amount. Different conditions will

require different gain settings. Deeper water will require higher gain

than shallow water. A weedy bottom will demand a lower gain setting

than a clean bottom. Keep the gain level low. Too much gain can "wash

out" the targets that you want to see. Generally, it is a good idea to set

the gain at an appropriate level and leave it there. Only change the gain

level if the water depth or conditions change.

INTERFERENCE REJECTION*

The yellow button in the middle of the panel controls the Interference

Rejection feature. The red LED to the upper left of the I.R. button tells

you if the rejection circuitry is on. The I.R. feature has eight steps of rejec-

tion to let you eliminate unwanted interference from another nearby

depth finder. When you turn on the FL-8SLT on, the I.R. automatically

comes on to the first step. If necessary, press the I.R. button repeatedly

until the interference is eliminated. You can press the button seven times

before you get back to the first step again. Turning the unit off and then

on again will also reset the I.R. back to the first step. To turn the I.R. fea-

ture off press the Gain control knob. The red LED will also go off.

TIP - If running two SLTs, it is best to turn the I.R. off on one unit

and then eliminate the interference on the other unit.

* Patent #5,515,33

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