Lowrance X-25 User Manual

X-25

INSTALLATION

AND OPERATION

INSTRUCTIONS

INC.

LITHO IN

U.S.A.

988-0105-33

LOWRANCE

12000 E. SKELLY

ELECTRONICS,

DR.,

TULSA,

OK 74128

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TABLE OF CONTENTS

INTRODUCTION 1 INSTALLATION

POWER CONNECTIONS 2 SPEED/TERMPERATURE SENSOR

KEYBOARD BASICS 4 DISPLAY

MENUS 5 OPERATION 6

AUTOMATIC 6 RANGE 6

-

ZOOM

Automatic

ZOOM- Manual

SENSITIVITY 9 GRAYLINE® 9

FISH ID 10 CHARTSPEED 11

DISPLAY MODE

ALARMS 14

FISHALARM DEPTH

ALARMS

LAMP FEET/METER

DISPLAY CONTRAST 16

ASP

(Advanced Signal Processing)

TRANSDUCERS AND CONE ANGLES 17

SIGNAL INTERPRETATION 18

FISH ARCHES 19

WATER

SURVEYING A LAKE SONAR TROUBLESHOOTING 23

TEMPERATURE

BAIT FISH 22

Operation

AND

THERMOCLINES

1

3 5

7 8

12 14

14 15

15 16

20 22

Copyright

All features and

©

specifications subject

1990,

All

rights

Lowrance

reserved.

Electronics,

to

change

without notice.

Inc

All screens in this manual are simulated.

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26

4. The boat must be

Is

motionless,

lines.

fish

moving

in the

stay

ELECTRICAL NOISE A

sonar's

completely or not at all.

cause of sonar

major

display

as random

cover the screen with black

at

aslowtrolling

cone, showing

problems

patterns

to seefish arches. If the boat

speed

on the

display

is electrical noise. This

of dots or lines. In severe

or cause the unit

dots,

as

straight

horizontal

usually appears

cases,

operate

erraticly,

on the

it can

To eliminate or minimize the effects of electrical

cause. With the boat at rest in the electrical

yourX-25

a

equipment turn on the

turn the all electrical

noted,

If

you

or

power

interference. VHF radio antenna cables radiate noise when certain to

unit's

If no noise

certain

Increase the RPM with the

the

wiring. Try using resistorspark plugs,

power the

supplied

equipment

on,

steady

bottom

on the boat and view the effect on the sonar's

bilge pump

pump

equipment

then turned off.

find noise interference from an electrical

radio, try

problem

battery helps

to isolate the

cable and transducer cable

keep

powercable

displays

everything except

could be one of three

cable

away

with the unit when

on the boat off. Make certain the

then turn off ASP

signal

(Advanced Signal Processing).

on the

display.

and viewthe

then turn on the VHF radio

off,

has been turned

problem.

the sonar's wires

directly

to the

away

batteryto

on the sonar unit from electrical

the sonar unit is turned

gearshift

from

engine wiring. Again, routing

eliminate noise

problems.

wiring

the first

water,

Now turn on each

sonardisplayfor

and transmit.

their effect on the sonar

on,

instrument,

You can

away

usually

from the

from it. You

isolate it from

in neutral. If noise

things; spark plugs,

alternatorf

Make certain to use the in-line fuse

power

cable to the

the

first

noise,

thing you

engine

display.

noise. If no noise is

trolling

re-route the sonar unit's

wiring

need to route the sonar

may

otherwiring

equipment,

then start the

off,

appears

alternator,

or

lIters,

the

routing

power

battery.

to determine the

try

should do is

is

also. Turn

off,

There should

of electrical

piece

For

example,

Keep doing

motor,

is

that

causing

transmitting,

on the

then make

on the

ortachometer

the sonar unit's

cable

directly

turn all

be

present,

this until

display

pump,

the

so be

boat.

engine.

display,

to

with limited

in shallow

all boat

then the

speeds.

When no noise noise source is

experience

orwhen the boat is at rest. In

water,

appears

probably

make

on the sonar unit after all of the above tests,

sonar installations which function

hasty

will be the location and/or must be

Read

your

in a location that has a smooth flow of water at

placed

transducer owners manual for the best

cavitation,

nearly

of the transducer.

angle

Many

all

cases,

novices or

persons

perfectly

the cause of the malfunction

The face of the transducer

mounting position.

25

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Weak bottom

2. Electrical

the sonar to

This can cause the from the

3. The water sonar can't find the flash

continuously.

are in. If this

you

to a realistic one,

range

move Into shallower water,

you

4. Check the also

drops,

Bottom echo bottom echo

1. The

flow of water water

disrupt

other

targets.

2. Electrical noisefromthe boat's motorcan

the sonarto

This can causethe unit to eliminate

the

from

and transducer cables

echo, digital readings

noisefromthe

automatically

display,

may

happens, place

battery

reducing

disappears

while boat is

transducer

in orderforthe sonar

the sonar

The technical term

automatically

display. Try using resistorspark plugs

boat's motorcan interfere with the

increase

unit to eliminate

be

deeper

bottom

It

may change

voltage,

its

may

than the sonar's

signal

(for example,

lithe

to find the bottom or

ability

at

high speeds

moving

be in turbulent

signals, interfering

increase its Discrimination

from

away

erratic,

its Discrimination or noise

weakersignals

while it's in the

the

range

the unit in the manual mode,

0-100

a bottom

voltage drops,

water. It must be mounted in a smooth

to work at all boat

for this is 'Cavitation'.

weakersignals

other electrical

fish

or no

such

ability

automatic

to limits far

and increase the

feet)

should

signal

or erratic

with its

interfere with the sonar. This

such asfish oreven

or

routing

wiring

signals (cont.):

sonar. Thiscauses

rejection

as fish or even structure

to find the bottom. If

the

mode,

greaterthan

then

sensitivity.

appear.

the unit's transmitter

targets.

digItal reading

bubbles in the

speeds.

ability

or noise

Air

to find the bottom

rejection

Ihe sonar

on the boat.

feature.

digital

water

the

change

power

or weak

causes

feature.

structure

unit's

power

the will

the

As

or

INTRODUCTION

Thank quality

These

s.

you

sonar

units have an automatic feature

bottom, fish,

However,

key.

the

press easy-to-use

To where road.

get

started

it all

After

rest of the will

perform

water.

the

INSTALLATION Mount the X-25 in

it's tilted for the best

when

allow wood screw or place a piece

the

panel.

the

power

for

purchasing

designed

structure,

if

you

menu

key.

menus.

with

begins, Improper

for

read the

you.

you've

manual. The more

any

a

Lowrancq

for both

and morel

wish to fine tune The X-25 has

first read the

unit,

your

installation

instnjctions,

you

Take this

convenient location,

viewing angle.

through

of

plywood

Make certain there

and transducer cables.

bolt

on the back

sonar. Your X-25 is a

professional

All

powerful

know about

manual for reference when

mounting.

is

enough

and novice fishermen.

that finds and

have to do is

you

the

unit,

all

displays

you

features available

installation section.

can cause install the

provided

Holes in the bracket's

side of thin

your

It

may

problems

unit,

there is clearance

be

panels

room behind the unit

press

have to do is

then read the

the

necessary

to 'reinforce

high

the

down

better it

you

to attach

on

through

This is

the

head for

base

to

fish arches when the Fish ID feature

No

1. Make

common owner's

2. The

arch, until It

when

3. Use the

in on better luck

This

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certain the transducer is

problem

manual for more information.

sensitivity may

if a

partial

not be

arch is

high

displayed.

enough.

it has to be able to receive the fish's

leaves. If the

it is in the center of the cone.

Zoom feature. It is much easierto

a small

seeing

enlarges

sensitivity

of waterthan a

range

fish arches with a

the

targets, allowing

is not

large

30 to 60 foot

the

24

Is off:

pointing

high enough,

straight

In orderforthe unit to

echo from the time it enters the

display

one. For

display

down. This is the most

See the Fish Arch section in

the unit

example, you

range

show much more detail.

to

displays

arches when zoomed

fish

than aD to 60 foot

your

the fish

range.

a fish

cone

only

display

will have much

Drill a hole in the dash for the location

way,

and transducer cables can can't

for this hole is

the bracket

pass a power

immediately

covers the hole. The smallest

pass through

or transducer connector

power

1

and transducer cables.

under the

gimbal

bracket.

hole both the

one

is

inch. However,

and another cable

The best

This

power

you

through