Lowrance electronic X-40 -

LOWER

LOWER LIMIT LIMIT

To

change the lower

limit,

first

make certain the

word "AUTO" Is off at

thetop

ofthescreen. Thisindicatesthat

the automatic mode is off. (Note: This

also

disables the automatic sensitivity

function.) If the

automatic mode is

on,

press

the AUTO key

once to disable It.

Next,

pressthe

lower limitdesired from

10 to 9999 feet and press the LOWER

LIMIT

key. The

displaywill immediately

change to the new depth range and

displaythenewlowerlimitatthebottom

of the screen.

For example, to set the

range

to 80 feet, press 8,O,LOWER

NOTE: The maximum lower limit the X40 can display is 9999 feet.

However, the actual depth

that it can reach Is dependent on water and

bottom

conditions, plus

the

quality of the transducer

installation.

When the

X-40

changes ranges

while in the

automatic

mode, the

lowerlimit selected will

always

bea multiple

often. In

otherwordsthe lower

limit will be a number that ends in zero such as ten, twenty, forty, one

hundred, etc.

I UPPER

UPPER LIMIT LIMIT

Often ft's

desirable to

expand or "ZOOM" a section of the

display

to

show more detail. You can do

this on the X-40 by using

the

Upper Limit

feature.

change

the

display's upper

limit, first make certain that

AUTO

is off. Then simply press the desired depth (any

number

between 0 and

9989

feet). Next, press the UPPER UMIT

key. The

only

restriction on the

upperlimit

isthat it

mustnot be closertothe lowerllmttthan I

Ofeet. In other

words,

setting

the

lower limit to 81 feet

prevents

the

upper

limit

from

being

closer than 71 feet. It

requires

a ten foot or

larger segment. Remember,

you cannot change the

upper

limit if the X-40 Is in automatic.

Set upper and lower limits in various combinations to show

segments anywhere between the surface and the bottom. This

permits a

scale

expansion or "zoom" of a

portion

of the

display.

from 0

LIMIT.

MENU #4- DIGITAL AVERAG-

ING

The

digital sonar used in the X-

40 is a highly sensitive device that

gives

rapid updates of the water's depth.

Under most conditions, the bottom

contour

changes so quIck

that the dis-

play appears

to "Jitter". In other

words,

the

display

will

change so

quickly

that it

can be difficult to determine the actual

bottom

depth. To minmize this condi-

tion,

the X.40 averages

the bottom read-

ings

and

displaysthe

result. WhentheX-

40 is first turned on, averaging is en-

abled. To disable it, press

2nd,COMMAND until menu 4 appears,

press

4,2nd, COMMAND. Next,

press

the up or down arrow in the ZONE

ALARM section of the

keyboard to turn it

off oron. Wait six

seconds forthe

display

to clear or press the CLEAR key to res-

ume operation.

MENU #5- PULSE WIDTH - page 22

MENU #6-SCC-page2O

MENU #7

ZOOM SIZE (AUTOMATIC

BO1TOM

TRACK-

ING) - page 13

MENU #8- FEET/FATHOMS/METERS - page

21.

These

functions are

printed

in white on

keys

on the

keyboard.

For example press 2nd, 0 for the pulse

width menu. However, they

were

included in the Command section since they are available by

pressing the COMMAND key. You can also press

the menu number,

then

the 2nd

key, then the COMMAND

key. For

example, press

5, 2nd,

COMMAND for the Pulse Width menu. Since these functions have

been explained previously, please refer to the page numbers listed

above for Instructions.

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