Instruction Manual

GP3XLORANCSetupInstructions
(GP30,31,32,35,36&37)
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SUBJECT:GP‐3XseriesLoranCsetupprocedures
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PROBLEM:WaypointsareincorrectafterLoranCsetup.
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IMPORTANT:ThefollowingstepsmustbedonepriortoenteringanydataintotheGP3X.
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 Connectunitandpowerupasnormal.
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 Allowunittoacquiresatellites anddisplayastablepositionfix.(3Ddisplayedonscreen).
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 SelectLOPSETUPformMAINMENU.
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 Change[LAT/LON]to[LCLOP].
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 UsingLORANCchartfromownersmanualenterproperGRIChaininformationinto[LORAN
C:](Ex:7980)
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 UsingLORANCchartsfromownersmanual,entersecondarynumbers(TD’s)locatednext
totheGRInumberontheGP30/35screen.NOTE:Youmustdeterminethelocalarea
numbers,i.e.wheretheboatislocatedandusethenumbersfromthechartthatareclosest
to,butunder,thelocalareanumbers.(EX.Localnumbersare
14445.6and45435.6,select
11and43fromchartaninputintounit,locatedonsamelineastheLORANC:
information.)
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 DisplayNAVIGATIONSCREENonGP‐3X.
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 PositionvesselataknownLORANClocationforreference.
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 UseLORANC,paperchartorothersourcetoderiveLORANnumbersforreference.
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 ComparefirstnumberofGP‐3XtoLORANreferencenumberandsubtractthetwo
numbers.
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 InputthedifferenceofthefirsttwonumbersintoLOP1ontheLOPSETUPmenuobserving
the+/‐(changeaccordingly.)
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 FollowtheabovetwosectionstocomparethesecondsetofnumbersandinputintoLOP2
ontheLOPSETUPmenu.
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 DisplaytheNAVIGATIONSCREENtoconfirmoperations.(numbersshouldmatch)
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 EnterWaypoints,Routes,Etc.asnormal.