Bedienungsanleitung Lowrance X-20 (Seite 4 von 16) (Englisch)

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electrical

interference,

then

attach the cable

directly

to the

battery.

OPERATING FREQUENCY

Frequency

of a sonar unit's transmitter

Electrical interference

shows as random dots on the

display

whenever

the

boat's

engine

or an

accessory

is on.

The

power

cable has two

wires,

red is the

positive

lead and black is

negative

ground.

Attach

the in-line fuse holder to the red wire on the

power

cable with the

crimp

connector. The other end of the fuse holder

attaches to the

battery

accessory

buss. If the cable is not

long

enough, splice ordinary

#18

gauge

wire onto it. Be certain that the fuse

holder is as close to the

power

source

(battery

accessory

buss)

possible.

This

protects

the

power

cable and

your

X-20 in the event of a

short. Use a

3-amp

fuse.

The X-20 has reverse

polarity protection.

damage

will occur if the

power

wires are reversed.

(However,

the unit will not work until the

wires are attached

correctly.)

and receiver.

(See kHz.)

OUTPUT POWER

The

amplitude

of electrical

energy

transmitted from

the sonar unit to the transducer. Measured in

wafts,

the

higher

the

output power,

the

deeper

a sonar unit can

read,

and more detail can be

displayed.

PIXEL

The small dots or

squares

on a

liquid crystal display

or CRT.

PIXEL DENSITY

The number of

pixels per square

inch on a

liquid

crystal display. Typically,

the

greater

number of vertical

pixels,

the

better the

resolution.

PULSE LENGTH

The amount of time that the sonar transmits.

This is

measured in

micro-seconds. The shorter the

pulse length,

the better

the resolution. For

example,

30 micro-second

pulse length

equal

a one

inch resolution.

RANGE

The section of water shown on the sonar

display.

For

example,

a 60 foot

range

has zero for the

upper

limit and 60 for the

lower limit.

REMOTE

intelligent "repeater"

unit that receives

depth

information

from another sonar unit. A remote doesn't have a transmitter or re-

ceiver.

However,

it does have it's own features that are

adiustable

and

operate separately

from the master.

RESOLUTION

The

ability

of a sonar unit to

separate targets

from

each other or from the bottom.

SCALE

The

markings

on a sonar units

display.

To determine the

depth

of a

target, simply compare

the

target's

location to the location of

the scale markers on the

display.

SECOND ECHO

Another echo that

registers

roughly

twice the

depth

of a

target

echo. This is

caused

the

sound waves

reflecting

off

the

bottom,

striking

the surface of the

water,

travelling

to the bottom

again,

and

returning

to the surface.

SECOND

FUNCTION

KEY

button that converts the functions

of the

primary keys

to other functions.

2 27

FUSE

12 VOLT

BATFERY

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