C}PFRATICThJ Remember, there mustbesomemovementbetweentheboatandthe
WhentheX-4isfirstturnedon, itautomatically
findsand displays.the
bottomdepth,setsthe
sensitivity
level,
and muchmore.Ifdesired,
theX-4
canbeleftin thisautomaticmodeand usedforfindingfish andthe water
and bottomconditionstheyprefer. However,
virtuallyevery
functionofthe
X-4 can bemanuallyadjusted
sothat"finetuning" oftheunittoThe
surroundingconditionscanbemade.At
first,youshouldtakethis manual
outonthewaterasareference
guide.Asyoubecomemorefamilarwith
yourX-4,thehandyUser'sGuidewe'veenclosedshould beadequate
referencematerial.
ON EON]
TheONkey islocatedinthelower
rightcornerofthe keyboard. Itis
placed in this locationsothat itcanbeeasilyfound—evenatnight.
To
turntheX-4 on,presstheON key.Anaudiblebeepwill beheard
signifying
theX-4knowsthatakeyhasbeenpressed. Thechartlights
willbeginflashing,
thenstop aftersixseconds.Thechartwill begin
scrollingacrossthedisplay
and thenumber"0"willflash.Thisnumberis
the
digital bottomdepthdisplay
Afterthe
unithasfoundthe
bottom, the
depthwillbedisplayed.
OFF [ OFF]
ToturntheX-4off,pressand HOLD theOFF keyuntil thedisplayis
erased.
2nd
The
X-4has
many
differentfunctions,
but
onlyalimitedamountof
spaceforkeys.Therefore,
someofthekeyshavemorethan onefunction.
Eachkey'sprimaryfunction isprintedin onecolor,whileit'ssecond
functionisprintedinwhite.The"2nd"keymustbepushed
toaccessthe
secondfunctionprintedinwhite on the
appropriatekey.
Forexample, theAUTO
keyisalso labeled"LIGHT". If
youpress
the
AUTO keybyitself,
theX-4willbetakenout oftheautomaticmode.
However,
ifyoupress
the2nd key,then theAUTO
key, theX-4'slights
willbeturned on.The2nd keylustreassigned
themeaning oftheAUTO
keyfromAUTOtoUGHT.
fishtodevelopthearch.Usually
this means
trollingat
veryslowspeeds
with themainengineingear
ataminimumthrottlesetting.
Thedepthofthe waterwillaffectthesizeand
shapeofthefish arch
duetothecone angle
diameter. For
example,
ifthe cone passes
overa
fish in shallow
water,the
signaldisplayedontheX-4maynotarchatall,
duetothenarrow conediameter
and the resolutionlimitationsofthe
display.
Eventhe20degreetransducerhasonlya3footdiameteratthis
depth.
Compared
toa
papergraph,
anX-4cannot showasfine ofdetail
becausethepixels(dotsonthescreen)
are muchlargerthanapaper
graph'smarkings.Therefore,
the
X-4cannotshowfish archesaswellas
agraph,and itrequires
abitmoreworkinitially
toreadand interpret
the
screenthana
papergraph.
Very
smallfish probably
will notarch atall, while mediumsizedfishwill
showa
partialarch,orashapesimilartoanarch ifthey'rein deepwater.
Large
fish will arch,butthe
sensitivity
needstobeturnedupindeeper
watertoseethearch.Becauseofwater conditions,
suchasheavy
surfaceclutter, therniociines,etc., the
sensitivity
sometimescannotbe
turned highenough
toget
fish arches.
Oneofthebestwaystogetfish arches istoexpandor"zoom"a
segment
ofthe
water,
forexample
40to60feetThesmallerthe segment
thebetterthescreenresolutionwill be.Then,
turnupthe
sensitivity
as
highaspossible
withoutgettingtoo
much noiseon thescreen.In
mediumtodeepwater, thismethodshouldworktodisplayfisharches.
Simulated
Pictures
Figure22
7 28
______ U______
In
jrt
LU
I' a
II
PDF compression, OCR, web-optimization with CVISION's PdfCompressor
