Raymarine Quantum Radome - Chapter 3 Planning the installation

3.7Productdimensions
1.Sideviewofscanner.
2.Rearviewofscanner.
3.Undersideviewofscanner.
DimensionMeasurementDescription
A
116.0mm(4.57in.)Distancefrom
centerlineof
scannertofront
ofmountingbase.
B355.0mm
(13.98in.)
Distancefromrear
ofmountingbase
tofrontofmounting
base.
C209.5mm(8.25in.)Heightofradar
scanner.
D319.5mm
(12.58in.)
Mountingbase
width(rearofunit).
E541.0mm
(21.30in.)
Widthofscanner.
F
116.5mm(4.59in.)Distancefrom
centerlinetorear
mountinghole.
G233.0mm(9.17in.)
Distancebetween
mountingholes.
H
27.5mm(1.08in.)Distancefrom
centerlinetofront
mountinghole.
I
141.5mm(5.57in.)
Distancebetween
frontandrear
mountingholes.
3.8Locationrequirements
TheoptimumheightfortheQuantum
™
scannerisa
locationthatishighenoughabovethewaterlineto
givealongrangeline-of-sighttothehorizon,butnot
sohighastobeadverselyaffectedbythevessel's
pitchingandrolling.
Thescannermustalsobemountedwhereitis:
•Aboveheadheight.
•Easilyaccessible.
•Asnearaspossibletothevessel'scenterline.
•Onarigidandstableplatform,capableofsecurely
supportingthescannerunderseagoingconditions.
•Clearoflargeobjectssuchastheybridge,
largeenginestacks,searchlights,horns,masts
etc.(seeShadowareasandfalseechoesfor
additionalinformation).
•Clearofheatandfumes.
•Atleast1m(3ft)fromamagneticcompassor
otherscanners.
Shadowareasandfalseechoes
MounttheRadarscannerawayfromlargestructures
orequipment,suchasenginestacks,searchlights,
horns,ormasts.Theseobjectsmaycauseshadow
areasandfalseechoes.Forexample,ifyou
mounttheRadarscanneronamast,echoesfrom
othertargetsmaybereectedfromthemast.Wet
sailsmayalsocauseshadowareas,soRadar
performancemaybereducedintherain.Itis
particularlyimportanttoavoidshadowareasnearthe
bow.RaisingorevenloweringtheRadarscanner
mayhelptoreducetheseeffects.
Inshadowareasbeyondtheobstructiontherewillbe
areductionofthebeamintensity.Theremaybea
blindsectorifthebeamintensityisnotsufcientto
obtainanechofromanobject.Thismayoccureven
atcloserange.Forthisreasontheangularwidth
andrelativebearingofanyshadowareamustbe
determinedatinstallation.
Youmaybeabletodetectshadowareasorfalse
echoesonyourmultifunctiondisplay.Forexample,
seacluttercanbeusedasagoodindicatorofblind
arcs.DarksectorsontheRadardisplayindicate
possibleshadowedareas.Thisinformationshould
bepostednearthedisplayunitandoperatorsmust
bealertfortargetsintheseblindareas.
Planningtheinstallation
19