Support User Manuals

Nielsen-Kellerman ClearNav GPS Receiver User Manual

Open as PDF

of 86

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

Page55of86

4.2.3.1 MacCreadyWindow

TheMacCreadyWindowisfoundinthelowerleftcornerofthemovingmapscreenandisusedtoview

andedittheMacCreadysetting.Pleaserefertoyourfavoritecross‐countrysoaringtextbookfor

informationonsettingthisnumber.Briefly‐Itisusedtoselectthespeed‐to‐flybetweenthermals.It

isoftensettothebestestimateoftheaverageclimbrateinthenextthermal.Inthelastthermalof

thedayitissettotheachievedclimbrateinthattherma

ToedittheMacCreadysettingpresstheFocusbuttontoactivatetheNIAandusetheLeftbutton

orRightbuttontohighlighttheMacCreadyWindow .ThenusetheUp andDown

buttonstoselectthedesiredsetting.



MacCreadySetWindow

TheUp andDownbuttonsincrementanddecrementtheMacCreadysettingin0.5knot(or0.2

m/s)increments.

TheZoomIn(+)andZoomOut(‐)buttonsincrementanddecrementtheMacCreadysettingin1knot

(or0.6m/s)increments.

TohidetheMacCreadySetWindowpresstheSelect ,FocusorMenubutton,orwaitanditwill

hideautomaticallyinabout30seconds.

4.2.3.2 GlideWindWindow

TheGlideWindWindowisfoundinthelowerleftcornerofthemovingmapscreen,totheright

oftheMacCreadyWindow.TheGlideWindWindowisusedtovieworeditthewindspeedand

directionthatareusedbythesoftwareforfinalglidecalculations.We’ll

callthewindusedforfinal

glidecalculationstheGlideWind.TheClearNavcalculateswindspeedanddirectionautomatically

usingGPSdataandmeasuringwinddriftwhilecircling.TheClearNavcanalsoreceivewinddatafrom

anexternaldevicesuchasaCambridge302,etc.ThewinddataprovidedbytheCambridge302is

probablymoreaccuratebecauseitiscalculatedusingairspeeddatainadditiontotheGPSdata–which

makesitpossibletomeasurewindwhilecruising.Bydefault,theClearNavautomaticallyputsthe

MeasuredWindintotheGlideWindWindow.Thatmethodworkswellinmany

soaringlocationsand

windconditions,buttherearetimeswhenyoumaynotwanttousethemostrecentmeasuredwind

fortheGlideWind.Anexampleofthatwouldbewhenyouareabouttoheadintoaverydifferent

airmass–suchaswhenglidingdownintoa

valleyordownontoaridge.Inthatcaseitiseasyto

manuallyentertheGlideWind.

previous next