Summary of Contents for UltraNav

Page 1: ... UltraNav INSTALLATIONAND OPERATION INSTRUCTIONS LITHO IN USA 988 0106 39A EALGIflIE tJt1TM PDF compression OCR web optimization with CVISION s PdfCompressor ...

Page 2: ...NOTES PDF compression OCR web optimization with CVISION s PdfCompressor ...

Page 3: ...ZE 21 UNITOFMEASURE 22 BACKUGHTS 23 SPEAKER VOLUME 23 DISPLAY CONTRAST 24 DIGITAL SONAR 24 NOISE REJECTION 25 ASP 26 SURFACE CLARITY CONTROL SCC 27 DISPLAY ZONE BAR 28 DISPLAYZOOM BAR 28 TRANSDUCERS AND CONEANGLES 29 SIGNAL INTERPRETATION 30 FISH ARCHES 31 WATER TEMPERATURE ANDTHERMOCLINES 32 SURVEYINGALAKE 34 BAITFISH 34 SONAR TROUBLESHOOTING 35 HOW TOOBTAIN SERVICE 38 LORAN SECTION 39 Copyright ...

Page 4: ...NOTES PDF compression OCR web optimization with CVISION s PdfCompressor ...

Page 5: ...es it easyto use Aboveall don tbe afraidtotry differentfeatures and functions ontheunit Youcan t hurt it by pressing buttons Read this manual andtake itwithyouthefirstfewtimes you useyour unit It makes agreatreferenceshouldyou need it The moreyou knowwhenyougettothewater the moreyourUltraNavcando for you MOUNTING InstallThe UltraNav in anyconvenient location providedthere is clear ancebehind the u...

Page 6: ...youhaveto extend thepowercableto the batteryorpowerbuss attach one end ofthefuseholderdirectlytothe batteryorpowerbuss Thiswillprotectboththeunitandthepower cable intheeventofashort Thepowercable hasthreewires red white and black Red is the positivelead blackis negative or ground The white wire is usedfor theNMEAinterface To usethisfeature attach ashielded twistedpair cablefromtheautopilotorotherm...

Page 7: ...POLE 0 0 DUALRKIEW ORI7900 The UltraNav hasreverse polarity protection No damagewill occurto the unit ifthe powerwiresarehooked up backwards However it won twork until thewiringisconnectedproperly Attachtheloran module s cableto the UltraNav s powercable Tags on the cables identifyboth the loran andtheoptional speed tempera ture sensor s connector Seetheloran section inthis manual forloran modulei...

Page 8: ...to thebasicsonarfunctions The menu key in the bottomright cornerofthekeyboardactivates thefirst menu page SENS Pressthiskeyto adjustthe unit s sensitivity and Grayline RANGE Thiskey letsyou adjusttherange whentheunitis inthe manual mode ZOOM The Ultragivesyou 2Xand 4Xzoomcapability withthiskey AUTO Thisturnstheautomatic featureoffand on ALARM Activateand adjustthealarms throughthis key 4 101 333FT...

Page 9: ... key asshown below the Fish ID featurewillbe turned off 100 5 ICELANDIC LORAN C CHAIN GR19980 REGIONAL MANAGER COMMANDER COASTGUARD ACTIVITIES EUROPE LONDON UK CHAIN MANAGER COMMANDER COAST GUARDACTIVITIES EIJROPE LONOON UK COORDINATOR OFCHAIN OPERATIONSLOCATION LORMONSTA KEFLAVLI ICELAND CONTRDLSITE LORMONSTA KEFLAVIK ICELAND 00010 01M00 J ODOR CD0LL uo P5W xMrrrER IKV9 THANEMOT ANTB406 N0 4 ECU ...

Page 10: ...ytodegreesCel sitEs âpeedto knots and logtokilometers ontheUltraPlus TheADJ Display label lets youadjustthe display s contrastforthe bestviewingangle Pressing this key gives youthecontrastadjust menu SeetheDisplay Contrast section for moreinformation onthis feature WhentheUltraNavisfirstturnedon thedisplaywill appearsimilarto theone below Theword AUTO inthe uppercenterofthedisplay indicates theaut...

Page 11: ...50 Ft 0 M0 AOPOLO WHISKEY MARCUSISLAND JAPAN 241707 914 l036053 2E 110001 4253 90 AN01R4 45 2100 1200ff MCO4OPOLE 0 0 XMV HOI0II0O JAPAN 424427 IN 1434300 20 30005 0005 17 A1WPPN 45 500 025ff Ma4000LO 0 0 DUALAATEw oRI5070 YANKEE 0ESASMI JAPAN 2E3025 014 1200550 45 50000 4403 29 AN FP 45 600 625Ft M4OLE 0 0 DUALRATEWIOPISS7O ZULU BARRISADA 132700 114 2535 04 1444022 00 01000 750Ft SENSITIVITY Thes...

Page 12: ...ws the percentage of sensitivity in use To increase the sensitivity level press the keyadjacent to the menu s uparrowontheleftsideofthe unit Asyoupressthekey themenu s bargraphwill growtallerandthepercentage will increase in value You canalso seethedifference onthechartrecord as it scrolls When thesensitivity is at the desired level releasethekey Todecreasethe sensitivity level press the keyadjace...

Page 13: ...11204 606030 1W 200 1900 51 ANdrFI1 12 325 050 400 620FT MWDPOLE 0 0 0 0 DUALRATEWFSW003O YANKEE CARaWA DEAtH 000 3403lOIN 779446 7W 3000 3221 04 AWFPN 42 TIP DUALHATEW 0Rh7960 fltU DANAIN 395107 014 07201MW 6409W ANdFFN 44 3162 60 625Fr Ma4DPOLE 20 DLJALHATEW 0010970 GRAYLINE isadjustable Since GRAYLINE showsthedifference between strongand weaksignals adjusting Sensitivitymayrequirea differentGRA...

Page 14: ...UltraNav is inthemanual mode If necessary presstheAUTOkeyto switchtothemanual mode Next presstheRANGEkey Twoarrows appearinthe lower leftcorperofthedisplay Thesearetherange adjustarrows Press thekeycorrespondingtothe upperorlowerarrow to decreaseor increase therange The available ranges are0 10 20 40 60 100 150 200 300 500 900feet Afterthedesired rangeis displayed presstheCLEARkeyto erase therange...

Page 15: ... echoes that scroll acrossthescreen arethe exactsameechoes on both sides ofthescreen They resimply enlarged on theleftside Thisfeaturetracksthe bottom keepingiton thedisplayat alltimes whenthe automatic featureis on Onceyou ve setthe zoomasdesired press the CLEAR keyto erase the menus Toturn theZoomfeature off press the RANGEkey 94 11 U S WESTCOAST LORAN c CHAIN CR19940 REGIONAL MANAGER COMMANDER ...

Page 16: ...heright appears Azoombarand adjust arrowsappearonthescreen Theechoesontheleftside ofthe screenaretheonesthat appearbetween thetopandthebottomofthe zoombar Pressthekeys adjacent tothearrows to move thezoom barupordown As youadjustthezoombar theechoes moveon the leftside ofthescreenatthesame time Thezoomadjustmenus wilt automatically clearafewseconds afteryou vepressedthelast key ALARMS The UltraNav...

Page 17: ...00 6162 06 AWFW4 64 000 HOGS 700Fl 0 0 DUALBATE W G919060 M0 IOPLE YANKEE OAUOETTS 40204091 440004 ANIPFII 42 600 730Fl 00 92 bar Any echothat appearsinside this bar triggersthealarm The last alarmis called theBottomAlarm Onlythe bottomsignal will trip this alarm This is usefulasan anchorwatch a shallowwateralert orfor navigation You canalsoturnthealarm speaker offthroughtheALARMmenu FISH ALARM Us...

Page 18: ...djustmentlabel appearson theloftside ofthedisplay whereas thezonebarshowsonthefar right side Anyechothat appears betweenthetopand bottom ofthisbarwilltriggerthealarm This alarmwillsoundonfish structure bottomechoes etc 5D To adjustthetopofthezonealarm bar first pressthekey nexttothe SETSHAL DEEPlabel TheSHALletters appearinreverse Now pressthekey adajacent tothetoparrowto movethetopofthebar shallo...

Page 19: ...arm and DeepAlarm menu The bottom depthis shown atthetopofthe display Theshallowand deep alarm adjustmentarrows are beneaththedigital depth Nowsimply press thekeyadjacent tothe up arrow toincreasethedepth orthe OEPTk 33FT MEDITERRANEAN SEA LORAN C CHAIN GRI 7900 REGIONAL MANAGER COMMANDER COAST GUARD ACTIVITIESEUROPE LONDON UK CHAN Mk4AGERCOMMANDER COASTGUARD ACTIVITIES EUROPE LONDON UK COORDINATO...

Page 20: ...is indicated byanote symbolatthetop ofthe screen 10 C C C c ri I To turntheaudioalarm onoroff press theALARMkey Next press thekeyadjacent tothe TurnAlarm Sound Off labeltoturn the audio off Toturntheaudioalarm on presstheALARMkeyagain The labelthat wasusedtoturnthe sound offnow reads TurnAlarm SoundOn Pressthe keyadjacent tothislabeltoturnthesound on NOTE Thewordscorresponding tothealarm in usewil...

Page 21: ... The percentage of chart speed in use changes as the arrow keysare pressed The barchart also gives a graphical indication ofthe chartspeed Youcanseethechangeon thescreen bothonthemenu andonthe chart record as you press the keys Afteryou vemade theadjustment press the key adjacentto the CLEARkey to erase themenu Tostopthechart pressthekeyadjacent tothe STARTSTOP label Repeat this stepto startthe ch...

Page 22: ...phisticated but itcan befooled Itcannot distinguishbetween fish and othersuspended objectssuchastrot lines turtles submerged floats airbubbles etc Individual tree limbs extendingoutwardsfrom agroupoflimbsisthehardestobjectforthe Fish l D featuretodistinguish fromfish Youmaysee Fish ID symbolsonthescreen when actually thereare no fish Practice with theunit in both the Fish l D mode andwithoutto bec...

Page 23: ...l A screen similarto the onebelow appears Usethekeysadjacenttotheupanddown arrowto movethecursorup ordownto the desired depth To turn the chart cursor off press the menu key twice Now press the key adjacent to the TURN CHART CUR SOROFF label TheUltraNavreturnsto thesonarscreenwithoutthechartcursor NOTE The ChartCursorwillnotwork when FASTRAK is on orwhenthe Zone Alarm or ZoomWindowbarsare activate...

Page 24: ...tionary location To turn FASTRAKon press the menu keytwice thenpressthekeyadjacentto the TURN FASTRAKON label To turnit off repeatthesame steps The TURNI FASTRAKOFF label appears insteadof the 9URN FASTRAK ON label 20 85 SONARMENU PAGE3 SELECTDIGITALDISPLAYS The UltraNav can displaythe depth speed surfacewatertemperature and distancelogontheupperleftportionof thescreen iftheoptionalEST Tspeed temp...

Page 25: ...edium orlarge Tochange the sizeof the digital display firstpress the menu keythreetimes Nowpress thekey adjacent to the SELECTDIGITAL SIZES menu Thescreenshownbelowappears wr1 t 4 GULFOFALASKA LORAN C CHAIN SRI7950 REGIONAL MANAGER CCMMANCER PACIFIC AREAALAMEDA CA CHAIN MANAGER CCMMANDER 17THCCASTGUARD DISTRICT IUNEAUAK COORDINATOR OFCHAIN OPERATIONS LOCATION LCRMONSTA KODIAK AK CONTROL SITE LORND...

Page 26: ...ONARMENU PAGE4 SELECTUNITSOFMEASURE TheUltraNavcandisplaythewaterdepth in feet or meters surface watertemperature in degreesFahrenheit or Celsius speedinstatute milesper hourorknots and distance log inmilesornautical miles Thismenuswitchesalldisplaystotheirmetricequivalent and back again Youcannotswitcheachdisplayindividually Tochangetheunitsofmeasure firstpressthemenu keyfourtimes The screenabove...

Page 27: ...ST ANTHONY NEWFOUNDLAND CANADA CONTROLSITE LORMONSTA ST ANTHONY NEWFOUNDLAND DEBIG CDW0L STMIJ CA us OMITtEB PWP 1KW TRANOMP N AN1 ONNA SOD NOTES DUALRA IBWIORSEJO P ABlER FCXHARBOUR 6222362 ANfI PN 64 NPLD CANAN 664220 lW IOOHCBE 003 1500 700PT EC OA4OYOLE WHISKEY CAPEPACE 46463225 110001 AWFPN 45 NR D CAMAB 531022 2W 2167 31 1350 Fl 0 0 MONOPCLE DUALRATEW 0P15500 XMY nIBIOSoC BOOR 1725 20000 ANI...

Page 28: ...F 4 r 4 50 40 The UltraNavsavesallsettingssuchas sensitivity chartspeed displaycontrast and more inbatterybacked up memory Thismem oryisretainedeven if poweris disconnected fromtheunit Ifyouneed to return thesonarsettingstothefactorydefaults firstpressthe MENUkeywhileasonarscreenis displayed fivetimes The screen at thetopofthis pageappears Nowpress thekey adjacent tothe PRESETSONAR label Theunitwi...

Page 29: ...cer __________________________ even vibration fromtheengine In all cases noise can produce unwanted marksonthedisplay The UltraNav hasatwostep noiserejection system Whentheunitis turnedon thenoiserejection is on normal Ifyou havenoiseproblems identified by random lines or dotsonthedisplay trychangingthe noiserejection levelto high TURHIHO OFF THE DIGITAL WILL DISABLE ALL OF THE AUTOMATIC FEATURES ...

Page 30: ...SP Advanced SignalProcessing ASPis aprogramembedded intheUltraNav s computerthat continu allymonitorsthesignalsfromthereceiver Itdetermines which echoesare noise rejects them allowingtargetechoes to be displayed with aminimum ofscreen clutter Thisfeatureis especially useful sinceittypicallyallowsyouto operatetheboatat allspeedswithout adjustingthesensitivity WhentheUltraNav is firstturned on ASP i...

Page 31: ...H COAST GUARD DISTRICT HONOLULU HI COORDINATOR OFCHAIN OPERATIONS LOCATION COMMANDER FAREASTSEGTION YOKATA JArAN CONTROL SITE LORMONSTAVOKOTA JAPAN gflJaJa1a DEWS STATION 00CR CDIELL lusI XMI RER PWR TRANSMIT IK R ANTENNA NOM EDO NOTES USAFMANNEO MASTER FOHAFJG 2411 WaN AWT1RN 28 25 4FT 1 5 KOREA 1292027 30 MCNDPCLE WHISKEY IIOKKAIDO 424427 iN 11I AMIWH 45 1 6ZSFT 0 6 DUALRK6SWSRI997 JAPMI 14a409 ...

Page 32: ...reen Thiswillalsoturnthezone alarmon if it wasn talreadyon Re peatthesestepstoturnthezonealarm baroff Turning it offalso turns the zonealarmoff MENU PAGE8 DISPLAYZOOMBAR WhenthetiltraNav is inthemanual mode theZoom Barcanbeturned on continuously Todoso first makecertaintheUltrais in the manualmode thenpresstheMENU key eighttimes Nowpress thekey adjacentto the DisplayZoomBar label Note Thezoombaron...

Page 33: ...ixfeet across The 8degreetransducer covers only about atwo foot circle The20degreetransducer is almost always thebestto useinfresh water the8 degreemostly in saltwater In a deepwaterenviron ment 300feet freshwater 100 feet salt water thenarrowcone angleis moredesirable Since thesound energyi concentrated ina smallerarea itcan penetrate to much deeperdepths CANADIAN EASTCOAST LORAN C CHAIN CR15930 ...

Page 34: ...automatic mode isoffand thesignalnarrows down thenitmeansthat you havemoved overamudbottom Mud absorbsthesoundwave and returns aweaksignal Turn upthe sensitivityto see abetterbottomsignal Big rocksorstumpson asmooth bottomsend backsignalsabovethe bottomlevelsignal The height ofthesignal dependson thetarget s height Asyou pass overapost it should be clearlyvisibleas ashort line extending abovethebo...

Page 35: ...le diameter For example if the cone passesover a fish in shallow water the signal displayedontheUltraNlavmaynot arch atall Thisis duetothenarrow conediameterand the resolution limitations ofthedisplay 74 31 BOATS DIRECTION OF TRAVEL CENTRAL PACIFIC LORAN C CHAIN CR14900 REGIONAL MANAGERCOMMANOER PACIFICAREA ALAMEDA CA CHAIN MANAGER 14THCOAST GUARD DISTRICt HONOLULU HI COORDINATOR OF CHAINOPERATION...

Page 36: ... urvive in streams that get too warm Bass and otherfisheventuallydieoutwhenstocked inlakesthat remain too coldduringthesummer Whilesomefish havea widertemperature tolerancethanothers each hasacertain rangewithinwhich it triesto stay Schoolingfish suspendedoverdeepwater lie at the level that provides this temperature Weassumetheyare the mostcomfortable here 32 3 If you reusingtheloran on land keepa...

Page 37: ...ledirectlyto thebattery preferably the main engine s cranking battery This assures the boatwill begrounded since thelowerunit is in the water Ifyou re using an isolated battery wireagrounding platetotheground side of the battery The loran will workbetterifit sgrounded to water The temperature pf water inthe lake is seldom constantfrom top to bottom Layers of differenttemperatures form and the junc...

Page 38: ...h are the plankton feeding forage fish such as minnows and shad Baitfish canalso betheyoung of game fish such as crappies bluegill and bass Mostbait fish concentrate within five feetofthesurfacewheresunlight promotesthe growth oftheplankton on which they feed Onemethod offishingisto usetheUltraNavtofindthe baitfishfirst Withthe FishID featureoff A schoolof baitfish will look like a cloud onthe dis...

Page 39: ...le sconnectionatthe unit Also checkthe wiring 2 Makecertain the powercableiswiredproperly The red wire connects tothe positivebatteryterminal blackto negative orground 3 check thefuse 4 Measurethebatteryvoltageattheunit spowerconnector Itshouldbeatleast 11volts Ifitisn t thewiringtothe unitisdefective thebatteryterminalsorwiring onthetemiinals are corroded orthe batteryneeds charging 1 Electricaln...

Page 40: ...tentersthecone until itleaves Ifthesensitivityis not highenough the unit displaysthefishonly whenit is inthe centerofthecone 3 UsetheZoomfeature Itismucheasiertodisplayfisharcheswhenzoomed in onasmallrangeofwaterthanalargeone Forexample youwillhavemuth betterluckseeingfisharcheswitha30to60footrangethana0to60footrange Thisenlargesthetargets allowing the displaytoshowmuch more detail To change the A...

Page 41: ...Ifyour unitdoesNOThaveASP Advanced SignalProcessing orifyoucanturnASP off turn on your sonar unit There shouldbe a steadybottomsignal on the display Nowturnoneach piece ofelectrical equipment onthe boat andviewthe effectonthe sonar s display Forexample turn onthe bilgepumpandviewthe sonardisplayfornoise ifnonoise ispresent turnthepumpoff thenturnonthe VHFradioandtransmit Keepdoingthis until allele...

Page 42: ...ure to includeyour name return shipping address anda daytime telephonenumber To adjustthearrival alarm press the ALARM keywhile a loran or plotter screen isdisplayed The screen shownabove left appears Pressthekey adjacent totheup arrow onthearrivalalarm s menu to increasetheradius thedown arrow to decrease it orturn itoff Press thekey adjacent totheEXIT labelto return totheloran screen C D I ALARM...

Page 43: ... anyother route that hasthe asterisk displayed use the keysadjacent totheup ordown arrows This moves thelistof routes up ordown When the desiredroute isin theselection boxatthetop of the screen press thekeyadjacentto the SELECT label The routewill be _______ erased and theUltraNav will return to _____ 66 39 ULTF ANA V LORAN OPERATION IcEOUTE 1102 ROUTE 1103 ROUTE 1104 ROUTE 1105 WARNING USE THIS L...

Page 44: ...e As youcomewithin 1 nautical mile of 40 65 To followasavedroute presstheMENU key thenthekey adjacent tothe ROUTES label Nowpressthe keyadjacentto the RTE FORWARD to followaroutefromthefirst waypoint tothelast or RTE BACKWARD tofollowaroute fromthelast waypoint tothe first Thescreens are virtually identical and instructions for bothare thesame Inthis example routeforward is used The screen below a...

Page 45: ... sensitivereceivers Thus you candetermine yourpositionoverlong distances Loranwasdeveloped andusedduringWorld WarII Atthat time it wascalled Loran Aand operated at ahigherfrequency Research and development continued duringthefifties ThecurrentLoran version Loran C wasintroduced inthe sixties Itworksover longer distancesthanLoran A and it s easierto use ACCURACY The absolute accuracy of Loran isbet...

Page 46: ...osses thefirst line of position Yourpositionis attheintersection ofthetwo lines The UltraNav givesyoutheabilityto goto several waypoints in a row Thisfeatureis calledRoutes A routeconsists Oftwo ormoreway points When you run aroute the UltraNav givesyou navigation information tothefirstwaypoint in theroute As youreachthe first waypoint thearrival alarm sounds thenthenextwaypointis auto matically s...

Page 47: ...nreceivers alsodisplay latitude longitude The receivertakestheTD information and using a complex mathematical formula converts itto Iatitude longitudepositiondata Youcan display both TO s and latitude longi tudeon theUltraNav to determine yourposition Ifyou wishto know more about Loran C ordertheUnited States CoastGuard sbook Loran C USER HANDBOOK It san excellent bookthat describes Loran ingreate...

Page 48: ...ne hundred miles fromthelast timeyouturnedtheloran off1 you shouldn thaveto repeat this step WhentheUltraNavisturnedonfor the very firsttime and youpressthe LORANkey thescreen shownat rightappears To initializethe loran usingtheGRIsearch pressthe key adjacentto the SELECT GRI label If youknowyourpresentposition and youwant the loranto choose theGRI pressthekey adjacentto the ENTERINITIALPOSITION l...

Page 49: ...s displayed Now press the key adjacenttothe CHANGESETUP label Finally press thekey adjacent to the SELECT CR1 label A screen similarto the one shown below appears The GRI forthechain is shown atthetopofthescreen The chain s name is right below the shown this example CR1 7980 is _ SOUTHEAST To changetheCR1 press the key UNITED STATES adjacentto the upor downlabels This scrollsthechains through the ...

Page 50: ... plottertime pressthe key adjacenttothe SelectUpdate Rate label on the plottermenu screen To select an updateinterval simply pressthekey adjacenttothe desired time The screen willclear returning you to the plotterwiththe new time The available times are 2 5 10 20 and 30secondsand 1 2 5 10 and 20 minutes Waypointsare locations that you save intheUltraNav s memory You canthen navigateto thesepositio...

Page 51: ... fromthe starting location tothedestination The UltraNav s Station DataScreendisplays all ofthetechnicaldata forthestations in thecurrent GRI Toviewthis screen pressthe MENU keytwo times The screen shown below leftappears Now pressthekey adjacent tothe STATION DATA SCREEN The screen shown belowright appears TheTD s forthemasterstation and all ofthesecondaries inthe chaindisplay atthetopofthescreen...

Page 52: ...rts to move outsideofthe circle the UltraNavwill firstclearthe display foran instant Then it will redraw yourpresentpositionalong withaportionof yourtracknearthecenter ofthescreen Your present position will alwaysbe on the plotteratall times You do not haveto recall a waypoint to usetheplotter To cleartheplotter seethe Plotter Menus section UsingthePlotterwithaWaypoint Usingtheplotterwitharecalled...

Page 53: ...t to this label The menus will disappear switching to the last used loran screen _______________ The word AUTO or MAN appear at thetopofthe positionscreen showing __________ which mode is inuse Seethe Position Screen sectionfor moreinformation MANUALSTATION SELECTION The UltraNav s manual station selection featurelets you decidewhich stationsto use Thisalso lockstheunitinthe manual mode To manuall...

Page 54: ...TG isdisplayed immediately below the C D I This isthedistancefromyourpresentposition tothe When the UltraNavis firstturnedon thedistanceis shown The bearing tothewaypointfromyourpresentposition displays atthe centerleftsideofthescreen Thebearingis shown indegrees magnetic MBRG whentheUltraNav is turnedon forthefirsttime Toswitchto atrue bearingdisplay seethe SELECTTRUEBEAR INGS section The waypoin...

Page 55: ...Ifyou reusinga screenwiththe latitude longitude displayed thelat long will flashuntil a _____________________ new positiondisplays litheunit doesn tshowtheproper latitude longitude position you mayhave to changestations thentryswitching the primaryand alternate solutions The solutioncurrentlyin usebythe UltraNav is displayedatthetopofthe positionscreen Seethe Position Screen sectionfor moreinforma...

Page 56: ...gitude or TD s To theleft oftheword POSITION is theASF indicator It only showswhenASF s are inuse On the farrightis the primary alternate solutiondisplay If 23a8 KN 56 8 theunitis intheprimarymode theletters PAl appear ALT appear if the unit is in the alternate mode Inthis same areaisthefix quality indicator Fixquality is ameasure ofthe lines of position s crossing angles Ifthe fix qualityispoor u...

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