Manual Lowrance X-20A (page 8 of 16) (English)

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SENS.

This

key

and the arrow

keys adjust

the

graph's sensitivity.

-1

(The digital's sensitivity

adjusted

the unit automati-

cally.)

The receiver has 32

steps

adjustment.

______

CHART SPEED

IUIi'I

Vary

the

speed

of the chart with this

key

and the arrow

keys.

There are 5

steps

of chart

speed adjustment,

______

MODE

.Ip

The X-20A has five different "screens" or modes of

opera-

tion.

Use this

key

to switch between modes.

FISH l.D.

•

This

key

turns the Fish 1.0. feature off and on.

FISH ALARM

Press both the Fish 1.0. and the AUTO

key

the same time

activate the Fish Alarm.

This is an audible fish alarm.

AUTO

________

Turning

the unit on enables the automatic mode.

switch to the manual

mode,

press

the AUTO

key.

You can

return the unit to automatic at

any

time

by pressing

the

AUTO

key again.

other fish

eventually

die out when stocked in lakes that remain too cold

during

the

summer. While some fish have a wider

temperature

toler-

ance than

others,

each has a certain

range

within which it tries to

stay.

Schooling

fish

suspended

over

deep

water lie atthe level that

provides

this

temperature.

We assume

they

are the most comfortable here.

The

temperature

of water in the lake is seldom

constant from

top

bottom.

Layers

of different

temperatures form,

and the

junction

warm and cool

layer

of water is called a thermocline. The

depth

and

thickness of the thermocline can

vary

with the season or time of

day.

deep

lakes there

may

be two or more at different

depths.

Thermoclines

are

important

to fishermen because

they

are areas where fish are

active.

Many

times bait fish will be above the thermocline while

larger

game

fish

will

suspend

in or

just

below it.

The X-20A can detect this invisible

layer

in the

water,

but the

sensitivity

will

probably

have to be turned

to see it.

SURVEYING A LAKE

The most successful

anglers

any body

of water are those who fish it

day

after

day

and

year

after

year.

Eventually, they

learn the hot

spots

that

produce

fish

consistently. They

discover

through experience

where,

and at what

depth, they

can

expect

to find the fish

they

want at

any

season. And

they

realize

that

these

productive

areas

change

throughout

the

year depending

water

level, temperature, food,

and

other factors.

With the

X-20A,

anyone

can

eliminate

guesswork

and concentrate on

the areas where fish are

likely

to be. Even if it's the first time on

the

lake!

The most efficient

way

to become

acquainted

with a

body

of water is to

survQy

it with

your

unit. Start with

map

of the

lake,

possible,

and

indicate

the

promising spots

in relation to landmarks on shore.

you go

about

your survey, your

unit

will

tell

you

the

depth

and

type

bottom. It will also reveal

suspended

fish.

Keep

a few marker

buoys

the

boat,

ready

to toss overboard. When

the unit indicates a school of

fish,

throw the

buoy

out. With the school

4 21

RANGE

The

depth range

changed

with

this

key

and the arrow

•;hUtIa

keys.

The

ranges varyfrom

0-5 feet to 0-180 feet.

(0-3

meters to 0-90 meters

metric

models)

CHART ALARM

Using

this

key

activates the chart alarm. A bar

appears

the left side of the

display

when the chart alarm is ad-

justed.

Any target

that

appears

on the screen between the

top

and bottom of the chart alarm bar

triggers

the alarm.

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Lowrance X-20A Manual

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