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Nielsen-Kellerman ClearNav GPS Receiver User Manual

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NKClearNavManual•Version0.5•July3,2008

Page27of86

2.1.10.2 CambridgeAeroInstruments302

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TheCambridge302isagreatcompaniontotheClearNav.Thefollowingdatacanbereceivedfromthe

302:

• VectorWind(speedanddirection)

• RealTimeHeadwind

• TrueAirspeedfromthe302

TheVectorWind(speedanddirection)andRealTimeHeadwindcanbedisplayedonthemapscreen.

TheVectorWindisusedforfinalglide(astheautowind)ifitisavailable.Thewindinformation

suppliedbythe302isalittlemoreaccurateandcanbecalculatedwhencruisingaswellaswhen

circlingbycomparingtheTrueAirspeedtotheGPSmeasuredspeedanddirection.Withoutthe302

theClearNavcalculateswindusingwinddriftwhilecircling.TodisplaytheRealTimeHeadwind

receivedfromthe302simplyenablethatoptionunderPersonalPreferences/MapDisplay/Windand

Bearing/HeadwindComponent.The302suppliedTrueAirspeedisusedforthetotalenergyfinal

glidecomputation.Whennotconnectedtoa302,theairspeediscalculatedusingthemeasuredwind

andgroundspeed.

TheCambridge302canbeconnectedtoeitheroftheRS‐232serialportconnectorsontheNexus

WiringBoard.TheCambridge

302toNexusBoardCablecanbeusedfortheconnection.Itisshown

below.AY‐cableforconnectingthe302toboththeClearNavandapanelmountedconnectorforPDA

orPCisalsoavailablefromCumulusSoaring,Inc.

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