Home

Garmin GPSMAP 235 GPS Receiver User Manual

1. oT Mounting the GPS Antenna 86 Moonin the GPS LIBE osos ucc RO ingsi 87 Navigation Methods 000 62 DIOXIPADOTE Pa wen nike ae ei dod as 15 49 Navigation Page Options 50 Navigation SC ons doe dvi mu dore de so nr ds 79 Navigation LIBUS amp sa uu ox dad 2 Von a ears ae 79 Nearest Waypoints List eso sisse rre 59 NMEA and DGPS Interface Settings 83 NMEA Supported Formats 96 NOISE RElECHOM occ agr endo 2 ded cr ea cases 33 Operational Mod seirak bodied avus eed 77 Packing list sees esses vi Page Display siue RH oe Ro SAG Geko aS 31 ae caps D 5 Point To Point Planning 75 Poor GUS COVBEADE fonts na dera raso sn aes 20 Position CoordTBates seas seat mack sd eee 57 Position Forma sa 6 4 04 date 9 43 acabe vers 79 POS 0D T aus ocd Coad ed Sad See eee see as 97 POSIHOE PASE v dons ee teen eux aed ee e 35 42 Position Mod sce dado eq ier baat 40 PON TOE sarien cab a RUE EUER ae db eee 3 Proximity Alarms Turning On or Off 60 Proximity Waypolints 2 222 9 a dew 60 Proximity Waypoints Removing From List 60 Range Modes 00 0 cee ee eee 32 Receiver Not Usable siss wt a x oe eae ac 20 ECVE r RAIS scs Grecia qui ace eats ee aan 20 Reference Waypoints 56 o ox ae oy 4 kn ee ey a eee eae 66 ACUVAUMS d aae chee tecacwree aeons 69 70 A a se cy atte bby wk edo d gea 71 COONS co ten kee eae ee
2. next main menu option after Configure the Map is Setup Page Display A Orientation North Up Setup Page Display Allows you to specify what fields are displayed in the data win SIM B1 SIM 85 dow section of the Map Page by selecting one of the following display options A The color option allows you to define the fill color erayscale of the land and water used on the map e2 Fields amp Compass 6 Fields amp Compass display Three options are available no color no 2 Fields amp CDI 6 Fields amp CDI fills for land or water gray land white water the 4 Fields 8 Fields default setting and white land gray water 4 Fields amp Compass 2 Fields amp Sounder B The default option resets all map configuration 4 Fields amp CDI 4 Fields amp Sounder options to their factory settings 6 Fields 46 H Map Page Options con t ees 261 Dis 195 cos 261 sos 15 0 FISH _ N 32 14 53 0 261 19 5 WO80 10 10 6 Charleston h Woso oo oo 21 e RIVER FISH m ga The last two display options make it possible to display both the Map Page and Sounder Page simultaneously in a split screen arrangement The top half of the page will show a reduced size Map Page while the Sounder Page is displayed in the lower half of the screen Note When the dual frequency 200 kHz 50 kHz is selected on the Sounder Page 50 kHz only is shown in the lower half of the split screen M
3. ROUTEEDIT _ 02 MARINA STUMP2 To remove the selected route waypoint FISH 3 N 38 13 559 inihi i vu i E Edit As Text 1 Highlight the Remove option and press Gz P 2 CHARINA Invert Route To change the selected route waypoint ea Eee Center On Vessel v ddl sx Review 3J Center On First Wpt 1 Highlight the Change option and press E dy Deactivate Route F 2 Enter the name of the new waypoint using the keypad or press E to select the new waypoint from the nearest list waypoint list or map display 3 Press to finish The route edit options page features five more functions These functions A To remove a route waypoint highlight the way may be selected by highlighting the desired function and pressing E point on the map press EDIT ENTER and select e Activate Route Activates the route you are editing and begins navigation the remove option from the pop up window e Invert Route Activates the route you are editing in reverse order and begins navi m B The route edit options page lets you activate ation x 6 invert or deactivate the route you are editing The e Center On Vessel Redraws route edit map with your vessel in the center of the Center On Vessel and Center On First Wpt display options redraw the map to display the desired e Center On First Wpt Redraws route edit map with the first route waypoint in the option center of the display Deactivat
4. 0 106 108 Index vil vill INTRODUCTION Keypad Usage The GPSMAP 235 Sounder s advanced keypad system is designed to allow for fast con venient selection of navigation options and data entry The getting started tour will introduce you to the keypad and provide a hands on lesson in using the sounder We strongly encourage you to take the getting started tour before using your unit for actual navigation and fishing The Quick Reference Card contains helpful tips on using the unit and performing various navigation and sounder tasks It s a good idea to keep the Quick Reference Card nearby whenever you re operating your new sounder Turns the unit on and off and controls 3 level screen backlighting Scrolls the main pages in sequence and returns display from a submenu page to a main page Captures your present position and displays the mark position window Displays the GOTO waypoint window allowing you to select the destination waypoint Press GOTO twice to select a destination waypoint from the map Displays context sensitive options window Press MENU twice to display main menu page Activates highlighted fields and confirms menu options and data entry Returns display to a previous page or restores a data field s previous value Decreases the scale of the moving map and highway pages Increases the scale of the moving map and highway pages Controls the movement of the cursor and
5. B Use the left arrow hey to clear the SOG field and press EDIT ENTER to confirm To access the main menu page B 1 Press the C key twice 17 18 GETTING STARTED L Main Menu and Power Off TRACK RECORD MODE INTERVAL Resolution INTERVAL VALUE 825 DELETE ALL TRACK Hote This will delete all track points TOTAL MEMORY USED 2 Delete Track Are You Sure Start TracBack A The sounder s trach page lets you clear the trach log and start a TracBach route B To delete the track log confirm the warning page by highlighting the YES prompt and pressing EDIT ENTER Main Menu Page The main menu pages eleven submenus are divided into categories by function You can select a particular submenu by simply highlighting the desired option and pressing K amp 9 To get a feel for how the main menu page works lets clear out the track log we ve created during our simulated tour Clearing the track log will ensure that you have a clean slate once you start navigating in your home waters To select the track submenu 1 Highlight the Track menu option and press EB The track log page allows you to specify whether to record a track plot and define how it is recorded It also provides both an indicator of the total memory used and the individual functions to clear the track log and start a TracBack route To delete the track log 1 Highlight the Delete Track option and press Ea A confirmation page wil
6. Fields and Sounder and press E3 B In the split screen mode the Map Page is fully In the split screen mode the Map Page is fully functional but the Sounder Page functional but the Sounder Page is for viewing is for viewing purposes only To modify the Sounder Page you must press purposes only to access the Sounder Page make any desired changes and then press GB to return to the split screen in dual frequency mode the bottom transducer fre quency is always shown Note For best results it is recommended that you max imize the map portion of the split screen see page 43 28 A Sounder Page Options SECTION The Sounder Page options menu lets you customize the sounders features to SOUNDER PAGE suit your needs Sensitivity To display the Sounder Page options menu 1 From the Sounder Page press Giga The following options are available e Sensitivity Adjust Sensitivity controls the sounder s ability to show echoes without introducing interference With Garmin s technology called Depth Controlled Gain mm f pA you will rarely have to manually adjust the sensitivity Under actual operating condi m OPTIONS jto p 479 Mb ms tions DCG automatically adjusts the sensitivity for the best setting Under unusual Chart Speed Adjust conditions such as shooting the transducer through fiberglass you can adjust the Whiteline Adjust sensitivity described in the following steps Set Runge Move Setup Page D
7. e 08 42 52 e Setup Simulator Allows you to define speed course and position values while in simulator mode See the getting started tour for more on using simulator mode To select a menu option A The four data fields at the top of the Position Page 1 Highlight the desired option and press 9 e d Ey ENG E telas option To change a data field 1 Highlight the Change Data Fields option and press EB BOR UNES P ab s Mod Np ground course over ground distance traveled alti 2 Move the field highlight to the field you want to change and press Gay tude DC voltage and depth Speed thru water and 3 Select the desired data field option and press E83 temperature display are available if you are using a properly equipped transducer 21 SECTION SOUNDER PAGE A The right side of the screen represents the trans ducer s location on your boat Items appearing on the right side of the screen were passed by more recently than those on the left B The four level gray LCD screen makes it possible to easily separate sonar targets from their surroundings Sounder Page Data Field Range Mode Fish Icon Whiteline Black Line Thermocline 4 Status Bar The Sounder Page is where your GPSMAP 235 becomes a powerful fishfinder The top of the screen can display a maximum of seven selectable data field options while the middle of the page displays a right to left moving sonar image of the water beneath your
8. DIG SD iss in So Vp did qoi deron epa RC 3 Scu PACS PTT 4 19 status Pave UPHONS za dcs ed b dm nita 21 Sunrise Sunset Planner 77 VSM CUD MP T Table of Contents 00 0000 vii Mae DCU vou girs paced anrea Keo eo Oe 34 Temperature RANEE usackaa d a eee eke ses 95 Temperaire DIES totos e ver eee prs sai 79 Thermocline 22d tote 7 104 Time Offset Changing 2 sn ERR ERE en 78 Time Olet CIUT x3 ca cawa enis ee eee qan d 105 Timers and Alarms Setup 81 Tone Cecon oT 78 TracBack ou oaaao aaa 12 64 TracBack Waypoints Deleting 61 Track Log Deleting 18 Track Log SUDPIORI uus sey ee aw kee dace 4 Transducer Frequency Setting 225 Transducer Installation 94 lripanud Piel Planning Laert 15 BE winters PP 22 Tuning DGPS Stations 2 21 o dos eoa hid dedos 82 Turn TRN aero om Sich e Hee BS a ee s 104 Underwater Waypoints 0 8 Universal Time Coordinated UTC 104 Universal Transverse Mercator UTM 104 User Magnetic Variation 79 Velocity Filter 80 Velocity Made Good VMG 15 104 Warranty Tcp iv Water Typ Selecting esses eme 34 WV Ay DOUG asese rreo amrni ranp PES 104 Creating And Using uu oud xo do rr e 29 Creating by Text Pny es caus dave dese 29 Creating Graphically 23 iaces aX he ssas 55 aono ee eaa oe Ae oe eed eh wee tee 57 DRE baie tao
9. select a destination waypoint from the FISH 8 c nearest waypoints list select a stored route to navigate or cancel the cur FISH 7 amp Show Nearest Wpts f FUEL amp Select Route rent GOTO destination Pressing twice allows you to graphically select an on screen waypoint navaid or cursor position as a destination directly from the map display DE na m For our simulated trip we re going to select the pre programmed tour route Dont delete the tour route Once its deleted it can t be retrieved for fur ther practice The tour route will automatically place our vessel at the first route waypoint Navigating the tour route will also give us an idea of how the GBB key is used to provide context sensitive options and functions Lets try it by activating the practice tour route stored in memory for navigation A Pressing GOTO once displays a list of all waypoints stored in memory To pich a destination select the desired waypoint and press EDIT ENTER B The GOTO options menu allows you to start a TracBach route bach home select a destination from the nearest waypoints list or select a route to navigate 1 Press The waypoint list page will appear If we were selecting a single waypoint to navigate to rather than a route we would highlight the waypoint and press E3 2 Press GB to display the options menu available for the GOTO function 3 Use the keypad to highlight the Select Route option Press to con
10. thoroughly practice operation using the simulator mode prior to actual use When in actual use carefully compare indications from the GPSMAP 235 Sounder to all avail able navigation sources including the information from other NAVAIDs visual sightings charts etc For safety always resolve any discrepancies before continuing navigation NOTE The GPSMAP 235 Sounder generates uses and can radiate radio frequen cy energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications There is no guarantee that interference will not occur in a particular installation If the sounder does cause harmful interference the user is encouraged to try to correct the interference by relo cating the equipment or connecting the equipment to a different circuit Consult an authorized dealer or other qualified technician for additional help if these remedies do not correct the problem The GPSMAP 235 Sounder complies with Part 15 of the FCC limits for class B digital devices Operation is subject to the following conditions 1 The sounder may not cause harmful interference and 2 the sounder must accept any interfer ence received including interference that may cause undesired operation Designed for detailed electronic charting and complete depth sounding capabil ity the GARMIN GPSMAP 235 Sounder is a powerful navigation device that also gives you the fishfinding information you need in
11. 2 Highlight the time value field 3 Press EB 4 Enter a value in seconds up to 240 and press to confirm A CAUTION Using the incorrect map datum can seriously effect the accuracy of your GPS receiver The GPS datum should always match the datum of the local chart you are using If no datum informa tion is indicated on the charts you are using contact the chart manufacturer B Keeping the velocity filter on the Auto setting will VELOCITY FILTER allow the sounder to automatically monitor and adjust the response time for track and speed calcu On 24 SEES lations 80 Timers and Alarms Setup The timer and alarms submenu is used to control various alarm timer settings e Timer Sounds an alarm when an entered interval up to 99 59 59 has expired or provides a continuous running clock timer to 99 59 59 To use the countdown timer 1 Select the Count Down menu option Enter the desired time interval in the interval field and press Gag 2 Once the count down time has expired an alarm message will appear and the timer will automatically switch to the count up mode To reset the timer select the reset option and press B e Clock Alarm Provides an alarm for the system clock To use the clock alarm select the On option and enter the desired time of day in the time field e Arrival Alarm Lets you specify an alarm to sound when you re a specified distance away from a destination waypoint There are thr
12. 200klz SPEED CALIBRATION Auto Calibrate CALIBRATED RANGE 0 0 to OO A Auto is the noise rejection default setting Auto identifies the presence of cross talk noise and turns the noise rejection on when it needs to When the noise dissapears turns the rejection ofj B Keel offset allows you to precisely set the point from which the sounder will measure depth 35 Sounder Setup Page con t There are four options SECTION SOUNDER PAGE Transducer Frequency and Speed Calibration e 200 kHz Best suited for shallow inland waters where deep water performance is not critical and bottom detail and resolution is the highest priority 36 KEEL OFFSET 10 0 KO SPEED CALIBRATION Auto Calibrate CALIBRATED RANGE 0 0 to 0 0 A The 200 kH2 50 kHz selection gives you maxi mum depth readings with good bottom detail and resolution B Calibration is required if you are using a trans ducer capable of displaying speed through the water SOUNDER SETUP FISH ID TARGET DEPTH On Off WATER TYPE Warm Above 80F Salt NOISE REJECTION On KEEL OFFSET FREQUENCY 0 0 200kHz SPEED CALIBRATION Auto Calibrate CALIBRATED RANGE 0 0 to 0 0 e 50 kHz For maximum deepest readings Note Maximum readable depths in salt water will be 25 50 less than freshwater depths because of saltwater attenua tion of the sonar signal e 200 50 kHz Allows you to operate with two frequencie
13. 3 6 To resume display movement press or EB Note If you only want to see the depth of an object and not mark it as a way point once the depth is displayed press Ell and return to normal operation SECTION SOUNDER PAGE Zoom Window Scale and Underwater Waypoints DPT 21 3 N 41 48 03 5 DPT 19 8 amp N 41 49 06 4 195 0 12 N034 4754 7 4195 0 18 H034 47 54 7 Ld SIM 25 A Use the target cursor to mark an underwater waypoint and press ENTER B Underwater waypoints can be marked while using the zoom feature by following the same steps used for a non zoomed screen 2 Map Sounder Page Split Screen SECTION SOUNDER PAGE The sounder can display a split screen view of the sounder window and Map Map Sounder Split Page The split screen feature is turned on from the Map Page Screen BRE 261a o1s 195 cos 2615 BH 15 04 261 19 5 HERAA 40 e L WES p i SAVANNA RIVER FISH ere 076 vis 10815 H 2 Fields amp Compass 4 19 Fields amp CDI 076 1081 0 71 00 45 8 4 4 Fields Ti kin 2 4 Fields amp Compass 16 Fields amp CDI 8 Fields i2 Fields amp Sounder i i al 4 Fields amp Sounder MAR SN To view the split screen A 1 Press GB until the Map Page appears 2 Press Gay to display the Map Page options menu A The split screen display is activated from the 3 Highlight the Setup Page Display option and press E3 Map Page 4 Select either of the entries for
14. 3 19 cos 0057 sos 10 0 F TX NAV AID N 32 08 978 17753 a 315 2 86m H080 51 103 f 1 s y BLISU SHOAL A SHOAL EJ 1 E HDS Sik A Use the cursor to pan ahead to other map areas The map display will automatically scroll for ward when you reach the edge of the map B To select or highlight an on screen navaid or waypoint simply move the cursor over the way point symbol The cursor will snap to the way point and display its name and position in the data field 39 40 4 MAP PAGE Map Modes Bes Qs cis 0 29m cos 24715 sos 10 0 SIM X 52 Tin A Position mode on inland water cartography B Cursor mode on inland water cartography Map Modes There are two map operating modes the position mode and the cursor mode When the map is in the position mode the position marker pans the cartography to keep itself within the display area When the map is in the cursor mode the cursor pans the cartography to keep the itself within the display area The sounder will always power up in the position mode with your vessel centered on the map display Here are some points to keep in mind when using the position mode Whenever sufficient map coverage is not available to keep the boat cen tered the boat symbol will move toward the edge of the display If the boat symbol attempts to go off the display adjust the zoom level to keep the cartography on the screen Whenever the key
15. 39 48 Map Page description modes scales and options Section 5 Navigation Page i2 iod rrr tei etn Lr pn oret Ua a bn ea ITE Eae aiia 49 51 Navigation Page use and options Section 6 Main Menu Page soiccicasoscestenasastavesavansinssacanondacacnnanaseonstincsnerdsreonacseavenss 52 Viewing the main menu page and selecting submenus Section lt W CVTU Me H 53 61 Creating using and editing waypoints Section 8 GOTO MOB TracBack Features eene 62 64 Going to a destination and using GOTO options TracBack routes Section 9 ROUTES P 65 76 Creating editing and using routes Section 10 Setup MEMS nao Hop ERI ETE RREQNEEE OH SER EI POE HAE SES MEAS ATEM RS 77 83 System and navigation setup timers alarms and track log Section 11 Using G Chart cartridges esee 84 85 Inserting removing and using electronic chart cartridges Secfion 12 LORAN MIL P 86 89 Using the LORAN position TD format GETTING STARTED Table of Contents APPENDICES Appendix A 2 20005 90 94 GPSMAP 235 Sounder Installation Appendix B 2005 95 97 Wiring and Specifications Appendix C 22005 98 09 Messages Appendix D Luuuuuuue 100 102 Map Datums Appendix E 103 104 Glossary Appendix F Luuuuouuuuusue 105 Time Offset Chart Appendix G
16. A The mark hey is used primarily to mark your present position but it can also be used to mark the cursor or a navaid position on the Map Page The marh Position Page also allows you to add a new waypoint to the end of any route If you re heading out without a planned route you can create a series of waypoints along the way with the mark key and save them to an open storage route When you re ready to head back simply invert the route to get back see page 70 SECUN WAYPOINTS Using the MARK Key Bee 055 sos 710 0 BRG 10 0 TD UN MIS CREATE NEW WAYPOINT NAV AID N 3737 804 033 1 28 H083 45 379 I 002 P TETTE N 37 37 804 L HOS 25 379 Use Map Posn a l AUN SIM 91 BOAT RAMP A To create a waypoint at an on screen navaid move the cursor over the desired navaid B Press the MARK hey and select the Use Navaid Posn option Press EDIT ENTER to finish 04 Mark Key con t nau 8 MARK POSITION 001 N 2642505 HOSO 01 228 DEPTH 66 4 FT Append To Route The mark key can also be used on the Map Page to mark the cursor position or an on screen navaid To mark a navaid select it with the cursor The sounder will use the navaid text shown on the cartography as the default comment To mark the cursor or navaid position with the key 1 Use the keypad to move the cursor to the desired position or navaid 2 Press the key 3 Highlight the Use Map
17. Enable Row or Disable Row option and press EB eCalibrate the Map The map configuration options page also features a map calibra tion feature that allows you to calibrate the map display using your exact physical sur roundings or correct data from older charts Before using the map calibration feature check to make sure that your map datum selected on the GPS matches the datum on the chart you are using see page 80 To calibrate the map display you must know exactly where you are and understand that the correction is generally valid only in a limited range from the point of correction Map calibration should only be performed while the vessel is still and should never be used to attempt SA corrections which can degrade accuracy up to 330 100 meters The maximum correction is 16 400 feet 5000m To calibrate the map 1 Select the Calibrate the Map option and press EB 2 Use the keypad to move the arrow cursor from the satellite position indicated by the satellite symbol to your exact position The bearing distance and position will be indicated in the data window 3 Press to confirm the calibration offset MAP PACE SECTION Enable Disable Rows and Map Calibration MAP CALIBRATION 040 N 26 53 765 39701 HOS 632 Calibrate the Map foe A Set Map Colors Restore Defaults Na DE Press MENU to see the p Main Menu page T Road Labels mmmnmmammmam Orientation North Up Sele
18. GOTO from the map display 1 Press the key twice 2 To select an existing user waypoint highlight the waypoint on screen and press E3 3 To select a navaid highlight the navaid on screen and press ge The GOTO new way point page will appear displaying the navaid position as a MAP waypoint with the navaid symbol and text as the default symbol and waypoint comment Press E3 to save the waypoint and begin navigation 4 To select a cursor position as your destination move the arrow cursor to the desired position and press Ea The GOTO new waypoint page will appear and display the posi tion as the MAP waypoint Press to save the waypoint and begin navigation GOTO Options The GOTO options menu provides a list of additional GOTO options that let you start a TracBack route select a destination waypoint from the nearest way points list select a route to navigate or cancel the current GOTO destination To display the GOTO options menu from any page 1 Press followed by C To select a menu option 1 Highlight the desired option and press Ez The following options are available e Start TracBack Allows you to create and start navigation of a TracBack route back to the oldest track log point in memory see pages 64 65 for more on using the TracBack feature e Show All Wpts Displays the GOTO waypoint list e Show Nearest Waypoints Allows you to select the GOTO destination from a list of the nine nearest waypoi
19. Island Guadalcanal Island Hjorsey 1955 Iceland Hong Kong Taiwan Indian Bangladesh India Nepal Indian Thailand Vietnam Indonesia 74 Ireland 1965 Ireland ISTS 073 ASTRO 69 Diego Garcia Johnston Island Kandawala Kandawala Sri Lanka Sri Lanka Kerguelen Islnd Kertau 1948 L C 5 Astro Liberia 1964 Luzon Mindanao Luzon Philippine Mahe 1971 Marco Astro Massawa Merchich Midway Ast 61 Minna NAD27 Alaska NAD27 Bahamas NAD27 Canada NAD27 Canal Zone NAD27 Caribbean NAD27 Central NAD27 CONUS NAD27 Cuba Kerguelen Island West Malaysia Singapore Cayman Brac Island Liberia 1964 Liberia Luzon Mindanao Island Luzon Philippines excluding Mindanao Isl Mahe 1971 Mahe Island Marco Astro Salvage Isl Massawa Eritrea Ethiopia Merchich Morocco Midway Astro 61 Midway Minna Nigeria North American 1927 Alaska North American 1927 Bahamas excluding San Salvador Island North American 1927 Canada and Newfoundland North Am 1927 Canal Zone North American 1927 Caribbean Barbados Caicos Islands Cuba Dom Rep Grd Cayman Jamaica Leeward and Turks Islands North American 1927 Central America Belize Costa Rica El Salvador Guatemala Honduras Nicaragua North Am 1927 Mean Value CONUS North American 1927 Cuba APPENDIX Map Datums SECTION Di 101 SECTION 102 APPENDIA Map Datums NAD27 Greenland NAD27 Me
20. Needs Adjustment The GPSMAP 235 Sounder has detected excessive drift in its internal oscillator which may result in longer acquisition times Take the unit to an authorized GARMIN service center for adjustment Poor GPS Coverage The GPSMAP 235 Sounder cannot acquire the necessary number of satellites to compute a position Power Down and Re init The GPSMAP 235 Sounder cannot calculate a position due to abnor mal satellite conditions Power down and verify the last position shown by other means Proximity Alarm You have entered the alarm radius for the proximity waypoint indicated Proximity List Full You have used all nine proximity waypoints Proximity Overlaps Another Prox Wypt The alarm radius specified overlaps the area specified for another proximity waypoint See section 10 for more information on proximity overlaps RAM has Failed The random access memory has failed and the unit is not operable Take your unit to an authorized GARMIN service center for repairs ROM has Failed The unit s permanent memory has failed and the unit is not operable Take your unit to an authorized GARMIN service center for repairs Received Invalid Waypoint A waypoint was received during upload transfer that has an invalid identifier Receiver has Failed A failure in receiver hard ware has been detected If this message persists do not use the unit and take it to an authorized dealer for repair Route Already Ex
21. Posn or the Use NAVAID Posn option and press ES 4 To accept the waypoint with the default name symbol and comment the depth at that position press EB 5 To enter a different name symbol or comment highlight the appropriate field and press the key 6 After entering and confirming your changes move the field highlight back to the Done prompt and press Gy Creating Waypoints Graphically Waypoints may also be quickly created from the map display which allows you to point and shoot at any map position and create a new waypoint To create a new waypoint graphically 1 Use the keypad to move the cursor to the desired map position If you want to create the new waypoint at an on screen navaid highlight the navaid on the map display 2 Press GG 3 To accept the waypoint with the default name symbol and comment press Egg If you are creating a waypoint at an on screen navaid the default symbol and comment will automatically reflect the selected navaid s name and symbol 4 To change the name symbol or comment highlight the appropriate field and press Gay 5 After entering and confirming your changes move the field highlight back to the Done prompt and press 3 Creating Waypoints by Text Entry Waypoints can also be created by manually entering a position coordinates or referencing a stored waypoint through the Create Waypoint submenu option on the main menu page To create a new waypoin
22. SOUNDER PAGE ey Range Mode and Page 3 Display m 64g Am A You can select from three range modes B There are seven Sounder Page data display options 31 Sounder Page Options con t SECTION SOUNDER PAGE e Change Data Fields Allows you to specify the data displayed in each data field on Data Fields and Restore the Sounder Page There are thirteen options Defaults e BRG Bearing to active wpt e DIS Distance to active wpt e SOG Speed over ground e COG Course over ground e FTE Estimated time enroute e FTA Estimated time of arrival e XTK Crosstrack error e VMG Velocity made good e TRN Turn angle to wpt e VDC DC voltage e DPT Depth e TMP Temperature prt 43 0 Auto Zoom P Auto ss 129 s 1287 BRG Bearing e STW Speed through water oe oe a 0 0 v 500 2d Over Ground To change a data field COG Course Over Ground ETE Est Time Enroute 1 Highlight the Change Data Fields option and press 3 ETA Est Time of Arrival B XTK Cross Track Error 2 Move the field highlight to the desired field and press Gg VIC DC Voltene 3 Select a data field option and press 3 4 When finished press EIB TMP Temperature STW Speed Thru Water 1 e Restore Defaults Resets all Sounder Page options except sounder setup to the factory settings See page 38 for restoring defaults on the sounder setup page A The Sounder Page can be configured to display up to five data fields simultaneou
23. Use the keypad to select the route you want to plan and press 3 5 Highlight the leg field and press Gz TRIP amp FUEL PLANNING TRIP amp FUEL PLANNING 6 To plan the cumulative totals for the all route legs select the ALL option or use the PLAN ROUTE LEG PLAN ROUTE LEG if ale 1 PERES FE keypad to select a specific route leg to plan Press E3 to confirm O10 te DIVE 4 7 Enter a speed for your trip or press fg to select your current SOG for the speed value SPEED 35 0 SPEED 35 0 i FUEL FLOW 30 05 FUEL FLOW 30 04 8 Enter an hourly fuel flow if desired in the fuel field and press EB DEPART 71 JUN 96 DEPART 71 JUN 96 07 18 9 Enter the date and time of your departure the default date and time will be the current FUEL 224 5 DIK 4785 FUEL 435 date and time in UTC or local time whichever you have selected and press Ga 261 9 ETE 07 29 pis 50 5 ETE 01 27 Eta 2 45 RISE 06 36 Eta 08 43 RISE 06 36 The bottom of the page will now display the planning information for the route DATE 12 JUN ser 08 15 DATE 11 JUN SET 08 15 SIN TR SW Cx leg selected or the cumulative values for the entire route The route planning mode will also let you plan cumulative totals for multiple route legs by using the Hold First Waypoint selection from the options window A To plan cumulative totals for an entire route select the All option from the leg field To plan multiple route le
24. a waypoint at an on screen navaid the navaid icon and name will be used as the default symbol and comment Going to a Destination con t Now that we ve zoomed in a little closer to our route we can pan ahead of our vessel with the cursor to review and create on screen waypoints and navaids Try moving the cursor to select the TOUR3 waypoint just use the amp keypad to move the cursor as close as possible to the waypoint To move the cursor in small increments try a series of short key presses Once the cursor is over the TOUR3 waypoint you ll notice that the waypoint symbol and name will become highlighted The data field at the top of the page will display the waypoint name the range and bearing from your present position and the coordinates for the waypoint To review the waypoint page for a selected waypoint 1 Press the key 2 To return to the Map Page press 3 again The cursor can also be used to create new waypoints right from the map display To create a new waypoint using the cursor 1 Use the keypad to move the cursor as close as possible to the following position N 35 02 129 W 076 26 106 Use the data window to verify the cursor position 2 Press the key to capture the cursor position 3 Use the key to highlight the waypoint symbol field 4 Press to access the symbol page 5 Press the DOWN arrow of the keypad twice to select the wreck symbol 6 Press to confirm and again to fin
25. and bearing to the waypoint from your present position 3 To move the selected waypoint s position press A Move label will now appear under the cursor arrow 4 Use the keypad to move the cursor arrow to the desired position The cursor s coor dinates along with the distance and bearing from the waypoint s position will be dis played at the top of the map display 5 Press to set the waypoint s new position and to return to the waypoint defin ition page To rename the selected waypoint 1 Highlight the Rename Waypoint option and press EB 2 Enter the new waypoint name and press B 3 Press to confirm the Yes prompt To delete the selected waypoint 1 Highlight the Delete Waypoint option and press 3 2 Press to confirm Waypoint Submenus The sounders main menu page features four waypoint submenus that let you manage a large number of waypoints quickly and efficiently The submenus also provide a continuously updated nearest waypoints list and a proximity waypoint alarm function that can be used to define an alarm circle around submerged haz ards shallow waters etc To access the main menu page waypoint submenus 1 Press GB twice The first waypoint submenu is the nearest waypoints list which shows the nine nearest waypoints that are within 100 miles of your present position The nearest waypoints are continuously updated to your present position and provide quick access to the close
26. boat Note Items appear as they pass under your transducer Fish are displayed as a darkened arch or a fish symbol in three differ ent sizes Thermoclines are shown as shades of gray The area of strongest sonar return or whiteline is displayed as a light gray band below the black line Typically the bottom will be the primary whiteline A thin whiteline indicates a soft bottom while a thick whiteline shows a harder bot tom A black line is used to show the point were the water meets the whiteline The black line follows the contour of the bottom and shows objects of reasonable size Along the right side of the screen is an adjustable scale which reflects the depth of the area being displayed The status bar at the bottom of the page dis plays satellite signal status digital depth operating frequencies single or dual mode and any triggered alarms It also shows the zoom level when the sounder is in the zoom mode Range Modes The sounder features three depth range modes auto manual and window Auto is the default setting and continually adjusts the screen display to show the maximum amount of detail possible while always showing the bottom manual allows you to adjust the sonar displays depth using the keypad window lets you establish a starting depth top and length span for the sonar display Switching Between Ranges and Modes The keypad is used to switch between manual and auto modes Window mode however ca
27. cartridges are installed in the card slot located at the bottom right of the unit G chart cartridges may be installed or removed at any time whether the unit is on or off To install a G chart cartridge 1 Open the chart door by pressing together the two handles at the bottom of the door and lifting up 2 Insert the card label facing front and G chart logo at top into the slot 3 Use your thumb to firmly push the cartridge into the unit If the sounder is on a confir mation tone will sound when the cartridge has been properly installed and accepted 4 Close the cover If you insert a G chart cartridge and get a card format not recognized message try removing the card and reinserting it If the card is still not recognized contact the dealer you purchased it from for assistance G chart cartridges are not waterproof should not be exposed to moisture or excessive static charges and should be stored in the anti static bag supplied with the cartridge To remove a G chart cartridge 1 Open the cartridge door 2 Grasp the card at the bottom groove and pull firmly 3 If the sounder is on a confirmation tone will sound when the G chart cartridge has been removed Using G Chart Cartography Once a G chart cartridge has been inserted the map coverage outlines for the cartridge will automatically appear on screen Keep in mind that the display will not automatically scroll to the map area or zoom to a level where y
28. coordinates When finished highlight DONE and press ENTER You can now navigate using LORAN TD waypoints the same as you would using GPS waypoints Remember the GPS converts the TD coordinate to a LAT LONG coordinate for use by the GPS To improve accuracy update the location informa tion when you are at the site since the waypoint gets converted SECTION ORAN TDs Using LORAN TD Waypoints MAIN MENU Nearest Waypoints Proximity Waypoints Waypoints 7980 1 6979 0 TD HX 281399 Routes Track Trip amp Fuel Planning System Setup Navigation Setup Timers amp Alarms Input Output A Follow the instructions given in the waypoint sec tion of the manual to begin creating a new way point B Using the data entry technique enter the TD coordinates B 89 SECTION APPENDIX T A Installation carmi A It is possible to route the coaxial cable through or outside the antenna mount The BNC connector on the coaxial cable can be removed and the coax shortened to ease installation If the BNC connector is removed it must be replaced with a new BNC connector 90 Sounder Installation The GPSMAP 235 Sounder must be properly installed according to the follow ing instructions to get the best possible performance The GPSMAP 235 Sounder is available both with and without a transducer and cable the cable must be used for FCC compliance The part numbers are 010 0011
29. field will now be highlighted 5 Press to begin entry of the proximity radius 6 Use the keypad to enter a distance value to 99 99 units and press B To turn proximity alarms on or off 1 Use the keypad to highlight the alarms on off field and press Gz 2 Select the desired setting and press EA To remove a proximity waypoint from the list 1 Use the keypad to highlight the waypoint to be removed 2 Press CR 3 Highlight the Clear Alarm field and press EB 4 To clear all proximity waypoints select the Clear All option and press EB Create Waypoint Submenu The third waypoint submenu accessible from the main menu page is the Create Waypoint submenu which allows you to create a new waypoint by manually entering coordinates Instructions for using the Create Waypoint submenu are provided on page 55 Waypoint List The last waypoint category available from the main menu is the waypoints list which displays a master list of all waypoints currently stored in memory From the waypoints list you may review edit rename or delete individual waypoints or delete all user waypoints The total number of stored and available waypoints is displayed at the top of the waypoints page with the stored waypoints arranged in numerical alphabetical order and listed in two columns in the center of the page To scroll through and review the waypoint list 1 Highlight the Waypoints option from the main menu
30. fresh or saltwater Precision Performance e High contrast four level gray LCD screen 12 channel receiver tracks and uses up to 12 satellites simultaneously for fast accurate positioning Differential Ready just add the optional GBR 21 beacon receiver for better than 5 meter accuracy Advanced Navigating and Plotting e 250 alphanumeric waypoints with selectable icons and comments e Built in database usable from 4096 to 64 nm worldwide and to 32 nm in the continental United States e 20 reversible routes with up to 30 waypoints each e G chart electronic charting with inland and offshore coverage LORAN TD to GPS Lat Lon Coordinate conversion Superior Fishfinding Ability Four zoom levels with a moving view window Underwater waypoint marking Map Sounder split screen displays navigation and fishfinding information Fish and depth alarms Digital depth continuously displayed on all pages Dual frequency operation for maximum coverage with good bottom detail Efficient noise rejection circuitry for removing cross talk and noise INTRODUCTION Sounder Capabilities INTRODUCTION Warranty Limited Warranty GARMIN warrants this product to be free from defects in materials and manu facture for one year from the date of purchase GARMIN will at its sole option repair or replace any components which fail in normal use Such repairs or replace ment will be made at no charge to the customer for parts or labo
31. from the center of the scale to either end of the scale e CDI Steer To Allows you select a steer to center or steer to D Bar orientation for graphic steering guidance The steer to center selection displays your position as the vertical line on the scale and your desired track as the center of the scale The steer to D Bar option displays your position as the center of the scale with the desired track as the vertical line The default setting is steer to center e Map Datum Provides a list of the available map datums for use with the sounder For a list of the available map datums see Appendix D The default setting is WGS 84 ITS DEPTH UHITS TEMP UNITS 5 Viti Levu 1916 Feet F e Velocity Filter Allows you to select the sounder s response time to changes in eee Auto Mag Var E004 track or ground speed Three settings are available automatic on or off The auto PLSCALE STEER TO default setting will monitor the changes in your current track and speed and adjust the receiver s response time automatically The on setting allows you to ii Center mo WGS 84 VELOCITY FILTER On fyrre manually enter a response time up to 240 seconds Selecting a higher setting may Auto A E B be desirable in slow speed applications with frequent changes in track To enter a user defined velocity filter value 1 Highlight the Velocity field and press Select the On option and press
32. is used to select options and positions and to enter data Marks your present GPS position and instantly sets a return course while providing steering guidance Initializing the Receiver Before you use your GPSMAP 235 for the first time you ll need to initialize the receiver Initialization is the process in which the receiver collects satellite data and establishes its your present position Follow the initialization process described below which will usually provide a position fix in about a minute Before you initialize make sure the sounder and antenna have been correctly installed according to the instructions in Appendix A To turn the GPSMAP 235 Sounder on 1 Press and hold the key until the power tone sounds The welcome page will appear while the unit conducts a self test Once the internal test is complete the mariners warning will appear asking you to read and acknowledge important information regarding the proper use of electronic charts To acknowledge the mariner s warning 1 Press the key A flashing MESSAGE PRESS PAGE prompt will appear at the bottom of the screen asking you to press the GSB key To view a system message 1 Press GES 2 Press the GB key again to return to the previous page The select initialization window will appear with the select from map option highlighted 3 Press to initialize the receiver from the built in worldwide map GETTING STARTE
33. nal temperature of the unit is too hot GPS will remain operational but the depth sounder func tion is turned off To restore sounder operation turn off unit and allow unit to cool by shading from direct sunlight Note To avoid this message use a DC voltage source less than 16 volts Wypt Already Exists The waypoint name you ve entered already exists in memory Waypoint Memory is Full You have used all 250 waypoints in the GPSMAP 235 Sounder sys tem APPENDIX Messages SECTION Ly 99 100 Map Datums D APPENDIX The GPSMAP 235 Sounder s built in worldwide database includes chart coverage down to 64 nm 32 in U S for the areas outlined above Note that the database is only valid to 68 15 of latitude The maximum cursor latitude is 85 05 and the maxi mum waypoint latitude is 89 24 543 north or south Adindan Afgooye AIN EL ABD 70 Anna 1 Ast 65 ARC 1950 ARC 1960 Ascnsn Isld 58 Astro B4 Sorol Astro Ben E Astro Dos 71 4 Astr Stn 52 Astrln Geod 66 Adindan Ethiopia Mali Senegal Sudan Afgooye Somalia AIN EL ANBD 1970 Bahrain Island Saudi Arabia Anna Astro 65 Cocos I ARC 1950 Botswana Lesotho Malawi Swaziland Zaire Zambia Zimbabwe Kenya Tanzania Ascension Island 58 Ascension Island Sorol Atoll Tern Island Astro Beacon E Iwo Jima Astro Dos 71 4 St Helena Astronomic Stn 52 Marcus Island Australian Geod
34. o be used to review activate invert or edit the route as text and adjust the map view Activate Route of the selected route Invert Route ere ein To display the route edit options J Center On First Wpt e Deactivate Route 1 Press CRM To select a menu option 1 Highlight the desired option and press 3 A A new route waypoint may be inserted into any The following options are available route leg by pointing to the new waypoint or Fdit As Text Allows you to modify a route by text entry position and pressing EDIT ENTER To edit a route by text entry B The Edit As Text option allows you to review 1 Highlight the Edit As Text option and press EG The text edit page will appear and modify waypoints by text entry showing a list of all route waypoints with the desired track and distance of each leg displayed 2 Select the route waypoint you want to review or change and press X9 A pop up menu with four route editing options will appear 68 Routes con t To review the selected waypoint ROUTES SECTION 1 Highlight the Review option and press EZ Editing Routes and To insert a new waypoint before the selected route waypoint Route Edit Options 1 Highlight the Insert option and press EB 2 Enter the name of the new waypoint using the keypad or press E to select the new waypoint from the nearest list waypoint list or map display 3 Press to finish
35. of the system using the simula tor mode Once you re familiar with the main pages and features of the unit refer to the reference section for instructions on performing specific tasks and functions The Getting Started Tour assumes that the receiver has been properly installed and initialized and you have not changed any of the default unit settings If you have changed any settings position formats units of measure etc the descrip tions and pictures in the tour may not match your configuration 3D Navigation To turn the sounder on Ww Xx e 4E 398 y 1 Press and hold the key until the power tone sounds The welcome page will appear HM 70 4E while the unit conducts a self test 2 Once the self test is complete press the key to acknowledge the mariner s warning A B The satellite status page will appear as the receiver begins acquiring satellites From the status page you can adjust the screen contrast and backlighting A The screen contrast may be adjusted from the Status Page by pressing the ARROW KEYPAD To adjust the screen contrast Press EDIT ENTER to confirm changes 1 To increase the screen contrast press the right arrow of the keypad a p J keyp B The status bar at the bottom of the screen is dis 2 To decrease the screen contrast press the left arrow of the keypad played at all times It continuously indicates cur 3 Press the EB key to finish rent depth and displays symbols which id
36. on the map to indicate each completed leg and a dotted line will appear to indicate the distance and bearing to the arrow pointer from the last route waypoint 7 Repeat steps 5 and 6 until you have finished defining all route waypoints 8 Press to finish and enter review mode or GB to return to the main page sequence Routes con t Once a route has been created graphically and the key has been pressed to ROUTES SECTION finish the map display will automatically enter the route review mode The arrow pointer will be replaced by the map cursor located at the last route waypoint The route edit mode allows you to review and modify the route displayed through a pop up window menu for each waypoint You can also use the cursor to select an individual route leg and insert a new route waypoint Editing Routes Graphically To edit a route waypoint 1 Use the cursor to highlight the desired route waypoint and press EB or om STUMP N 38 17577 FISH 3 N 38 13559 E 547 577 FISH 3 543 559 A pop up menu of editing choices will appear with options for reviewing 282 148 H033 26 335 088 1 59 H032 42 965 removing moving or inserting a route waypoint To review a route waypoint r np ure ud QU 1 Highlight the Review option and press 3 Review Remove 5 To remove a route waypoint 1 Highlight the Remove option and press B A To move a route waypoint l l A To move a route w
37. option and press XJ An on screen pointer will appear on the map display at your present position 2 Move the cursor to the desired reference point the point that you want to measure from and press 3 3 Move the cursor to the point that you want to measure to The bearing and distance from the reference point will be displayed at the bottom left of the data window Press to finish MAP PAGE SECTION Maximize Map Outlines and Measure Bearing and Distance ems QOOs ris 7 39 co OPTIONS Map Outlines Off Measure BRG DIS Configure the Map HAC Setup Page Display Change Data Fields Restore Defaults Setup Simulator j Press MEN Main Men Te the Miter A The map options menu provides access to all map configuration page display and data field options B The Maximize Map option will eliminate the data fields and show full screen cartography 43 Map Page Options con t SECTION MAP PAGE e Configure the Map Allows you to determine what map items are displayed on a Configure Map and particular map scale which will help prevent excessive clutter The map configura Change Orientation tion page shows a list of twelve map items with corresponding zoom scale selection boxes GEO Names Waypt Names Navaid Text Active Rte Trk Depth Shallow National Hwy Laan Depth Deep Local Hwy Der Shallow oY D I Lat Lon Grid Local Road Depth Deep Lat Lon Grid Waypoi
38. page and press EB 2 Use the keypad to scroll through the list in the desired direction 3 Press to review the highlighted waypoint 4 Press to return to the list To delete an individual waypoint from the list 1 Use the keypad to highlight the waypoint to be deleted and press CJ 2 Press Ei 3 Press the key to confirm the deletion warning To delete all TracBack waypoints or the entire waypoint list 1 Press the key to select the options window 2 Highlight the Delete TracBack or Delete All User Wpts option and press EB 3 Use the keypad to highlight the YES prompt and press to confirm SECTION WAYPOINTS Waypoint List WAYPOINTS AVAILABLE 233 USED 17 PARK amp o FUEL amp A T001 2 n o TO002 OPTIONS i T003 FISH 2 FISH B9 FISH 7 cx SIM 81 A The waypoints list displays all waypoints stored in memory in a two column format Temporary waypoints created by the TracBach feature are assigned a T___ name and a footprint symbol B The waypoints list options page lets you delete individual waypoints TracBach waypoints or the entire waypoint list 61 62 SECTION GOTO MOB Selecting a GOTO Destination ALL WAYPOINTS DM 002 003 004 005 006 BUOY COVE FISH Press GOTO t select from m MAP POSITION N_30 09 375 W089 53 725 DEPTH 51 9 FT Different Wpt SIM 534 Qp o omoz m ORLEANS A To select a destination f
39. the bach side of the panel for additional support APPENDIX Installation SECTION N 93 Transducer Installation SECTION BA Proper transducer placement and installation are key to getting the best performance from your new unit Detailed installation instructions are provided with the transducer that you have selected Below are some tips and basic instructions for proper transom mount transducer installation TIP APPENDIX Installation DO NOT mount the transducer near strakes struts fittings water intake or discharge ports or any thing that creates air bubbles or causes the water to become turbulent It is important that the trans ducer be in clean non turbulent water for optimal performance z rt Me HM P i x a l E z Er nr ook D d l y oun die transducer cab cover me M wel above the waledine Through Hull Trolling Motor Apply mance sealart zo al screw threads to preveri water i fram seeping ite the Transom i Garmin offers a variety of transducers for use with i i your Sounder Detailed installation instructions for Bi the transducer you have selected are included with f a 1 pc Transducer shes extesd 1 87 3e ow e eels c7 begas hull or AH bcc aluminum hull 94 the transducer Proper placement and installation of the transducer are essential in the operation of the sounder portion of the unit Carefully follow the instructions pro
40. the default setting and continually adjusts the screen display to show the maximum amount of detail possible while always showing the bottom Manual allows you to adjust the sonar displays depth using the keypad Window lets you establish a starting depth top and length span for the sonar display To set the range mode 1 From the Sounder Page press E to access the options list Highlight the Set Range Mode option and press Ga 2 Choose the desired mode and press Nothing further is required to activate auto or manual modes Window range mode however will require setup for first time use or to change the existing window values 3 Press the keypad once in any direction to display a window range definition field Enter a value for the TOP depth at which the window will start and the SPAN length it will cover 4 To finish press GB Note Previous window range values will be used whenever the window range is turned on unless changed from the window range definition field o Setup Page Display Allows you to select the fields displayed in the data section of the Sounder Page There are seven options Field e 3 Fields amp Compass Field amp Compass e 3 Fields amp CDI Field amp CDI e 5 Fields 3 Fields To change the page display 1 Highlight the Setup Page Display option and press Ez 2 Highlight the desired field and press EZ 3 Select a page display option and press ES
41. the screen The depth scale of the zoom window corresponds to the range set by the indicator bar To adjust the depth scale of the zoom window simply use the arrow keypad and move the indicator bar up or down setting it to the desired range The depth scale of the zoom window now corresponds to the range set by the indicator bar Press to accept or press to return to the previous win dow position The indicator bar is only visible when zoom is split but you can always adjust the zoom window even in full screen mode Underwater Waypoints The underwater waypoint feature marks the position and depth of an object which you might want to return to such as a stump underwater ledge etc To mark an underwater waypoint 1 Press to pause the moving screen 2 Press the keypad in any direction to turn on the on screen cursor A data field will appear showing the cursor s depth bearing and distance from your current position and the waypoint s coordinates The depth will also be highlighted in the scale bar Since the distance and bearing shown are measured from the boat to the waypoint they will change as your boat moves even if the cursor is stationary 3 Use the keypad to move the cursor onto the target stump etc to be marked 4 Press Ex A Create New Waypoint page will appear listing the waypoint s coor dinates default three digit name and depth 5 Enter any information for the waypoint such as name etc and press
42. with the time of day calculated using GPS satellites The status bar at the bottom of the page displays important status alarm and map scale information It also provides on screen user and message prompts The units of measure for speed distance position and altitude are all user selectable through the navigation setup option on the main menu page page 79 The time of day is shown in UTC Universal Time Coordinated or Greenwich Mean Time and can be set to a 12 or 24 hour time format with a local offset through the system setup option on the main menu page Position Page Options The position page features an options menu that provides access to functions POSITION PAGE SECTION and features relating to the position page Trip Distance Date Fields Restore Defaults and Simulator Setup To display the position page options menu 1 Press GD There are four options o Reset Trip Distance Resets the trip odometer TRP field to zero e Change Data Fields Allows you to choose the data displayed in the four user son 330 AY oso oso selectable data fields There are eight data types r OPTIONS SOG Speed over ground ALT Altitude Reset Trip Distance VDC DC voltage COG Course over ground i TRP Distance traveled DPT Depth Setup Simulator ff e STW Speed through water TMP Temperature rd ae STW elis Water e Restore Defaults Resets all data fields to the factory settings E
43. your present speed Grid A coordinate system that projects the earth on a flat surface using square zones for position mea surements Ground Speed SOG The velocity you are traveling relative to a ground position Latitude A north south measurement of position perpendicular to the earth s polar axis Longitude An east west measurement of position in relation to the Prime Meridian an imaginary circle that passes through the north and south poles Position An exact unique location based on a geographic coordinate system Sensitivity A measure of how sensitive the sounder is to sonar echoes Speed Through Water STW The speed you are traveling relative to the water s surface SECTION 103 SECTION APPENDIX Glossary es ACTIVE FROM W P DHT 104 Thermocline A layer of water separating warmer water above from cooler water below Turn TRN The difference and direction in degrees between the bearing to your destination and your course over ground The TRN value is used to indicate what direction and how many degrees to turn to get back on course Universal Time Coordinated UTC The time of day at the prime meridian 0 longitude in Greenwich England Universal Transverse Mercator UTM A grid coordinate system that projects global sections onto a flat surface to measure position in specific zones Velocity Made Good VMG The speed you are traveling in the direction of the destin
44. 12 643 W092 45 255 WAYPOINT WAYPOINT 010 e FISH 7 N 39 00 000 N 28 44 627 WOSS 00 000 HWOS89 37 814 CRTD 21 47 10 JUN 96 REF WPT REF WPT e COVE o RAHP 2 To create a new waypoint using a reference waypoint i I ee zm EE CENE 0 00 Eg 300 M O C 1 Select the Create Waypoint option from the main menu page and press EB 2 Enter the name symbol and comment for the new waypoint 3 Highlight the reference waypoint field and press B 4 Enter the name of the reference waypoint using the keypad or press GE to select the waypoint from the nearest list waypoint list or map display Leave the reference field blank to use your present position 5 Press to begin entry of the bearing from your reference waypoint to the new way point position Enter the bearing and press E3 6 Press to begin entry of the distance from your reference waypoint to the new way point position Enter the distance and press The position for the new waypoint will automatically be calculated 7 Highlight the Done prompt and press to finish BERG 0002 pis 0 00 Done A Enter the bearing from the reference waypoint to the new waypoint in the BRG field B Enter the distance from the reference waypoint to the new waypoint in the DIS field 56 A Reviewing and Editing Waypoints Once you have created and stored a waypoint it may be modified reviewed WAYPOINTS SECTION renamed or
45. 66 Australia Tasmania Island cial T Jb Astrln Geod 84 Austria Bellevue IGN Bermuda 1957 Bogata Observ Campo Inchspe Canton Ast 66 Cape Cape Canavrl Carthage CH 1903 Chatham 1971 Chua Astro E RES LH FERATI N Australian Geod 84 Australia Tasmania Island Austria Efate and Erromango Islands Bermuda 1957 Bermuda Islands Bogata Obsrvatry Colombia Campo Inchauspe Argentina Canton Astro 1966 Phoenix Islands Cape South Africa Cape Canaveral Florida Bahama Islands Carthage Tunisia CH 1903 Switzerland Chatham 1971 Chatham Island New Zealand Chua Astro Paraguay Corrego Alegr Djakarta Dos 1968 Easter Isld 67 European 1950 European 1979 Finland Hayfrd Gandajika Base Geod Datm 49 Guam 1963 Gux 1 Astro Hjorsey 1955 Hong Kong 63 Hu Tzu Shan Indian Bngldsh Indian Thailand Indonesia 74 Ireland 1965 ISTS 073 Astro Johnston Island Kandawala Corrego Alegre Brazil Djakarta Batavia Sumatra Island Indonesia Dos 1968 Gizo Island New Georgia Islands Easter Island 1967 European 1950 Austria Belgium Denmark Finland France Germany Gibraltar Greece Italy Luxembourg Netherlands Norway Portugal Spain Sweden Switzerland European 1979 Austria Finland Netherlands Norway Spain Sweden Switzerland Finland Hayford Finland Gandajika Base Republic of Maldives Geodetic Datum 49 New Zealand Guam 1963 Guam
46. 8 10 Rev B Printed in Taiwan Warning The GPSMAP 235 Sounder should not be used as a navigational aid or depth sounder to prevent collision grounding or boat damage any of which could result in personal injury For reasons of safety we also recommend that you operate your boat at very slow speed if you suspect shallow water or submerged objects INTRODUCTION Warning GARMIN GPSMAP G chart AutoLocate TracBack and PhaseTracl2 are trademarks of GARMIN Corporation and may only be used with permission All rights are reserved INTRODUCTION Cautions CAUTION The GARMIN GPSMAP 235 Sounder has no user serviceable parts Should you ever encounter a problem with your unit please tahe it to an authorized GARMIN dealer for repairs Any attempt to open the case to change or mod ify the unit in any way will void your warranty and may result in permanent damage to the equipment Caution The GPS system is operated by the United States government which is solely responsible for its accuracy and maintenance The system is subject to changes which could affect the accuracy and performance of all GPS equipment Although the GARMIN GPSMAP 235 Sounder is a precision electronic NAVigation AID NAVAID any NAVAID can be misused or misinterpreted and therefore become unsafe Use the GPSMAP 235 Sounder at your own risk To reduce the risk of unsafe operation carefully review and understand all aspects of this Owners Manual and
47. 9 00 unit without the transducer and 010 00119 01 unit with the transducer and cable Also avail able is a power data cable P N 320 00023 02 To complete the installation youll need appropriate fasteners and a 1 x 14 thread marine antenna mount which is available at most marine dealers Mounting the GPS Antenna Mount the GPS antenna in a location that has a clear unobstructed view of the sky in all directions Avoid mounting the antenna where it will be shaded by the boats superstructure a radome antenna or the mast Sailboat users should avoid mounting the antenna high on the mast to prevent inaccurate speed readings caused by excessive heeling Most marine VHF and loran antennas will not seri ously degrade the GPS antennas reception Never paint the antenna or clean it with harsh solvents The GARMIN antenna screws directly onto any standard 1 x 14 thread antenna mount If you need to raise the antenna to avoid shading try using a 1 x 14 thread extension mast available at most marine dealers To install the GPS antenna 1 Screw the antenna onto the 1 x 14 thread mount Route the cable to the mounting loca tion of the display unit Use the appropriate tie wraps escutcheon plates and sealant to secure the cable along the route and through any bulkhead or deck 2 Once the sounder unit has been installed connect the antenna cable to the antenna connector on the back of the unit Turn the antenna cable connector 1 4 tu
48. D Initialization Internal Database 3 00 Copyright GARMIN Corp WARHIHG The electronic chart is an aid to Welcome To The navigation designed to facili tate the use of authorized goy G a RM I N ernment charts not to replace them Only official govern GPSMAP 235 Software Version 4 01 navigation and as always the Internal Database 3 00 He for their Copyright 1996 1999 GARMIN Corporation Press ENTER to acknowledge A The Welcome Page will be displayed while the unit performs a self test B Confirm the mariner s warning before start ing navigation Remember that the electronic chart is designed to supplement the local government charts not replace them GETTING STARTED Initialization Acquiring Satellites INITIALIZE POSITION N 35 53 362 224 260 H098 45 903 WM woso on oo UNITED S ATES 02071519262 31 B Select Position amp Trex ENTER HH 4096 A Use the arrow keypad to move the cursor to a location close to your present position B Hollow signal strength bars will appear on the Status Page while the receiver collects satellite data Initializing the Receiver con t The Map Page will appear prompting you to select your approximate present posi tion with the map cursor 1 Use the keypad to move the map cursor to a location close to your present position If you have difficulty identifying your exact position use the key to zoom to a low
49. ER to accept and activate the LORAN TD position format 87 It is important to set the correct GRI chain and secondary stations for the way SECTION LORAN IDs point that you want to create The GRI chain and Secondary station fields cannot Using the LORAN TD be edited on the Create Waypoint page The first setting on the LORAN Setup Position Display Format page is the LORAN Chain Number GRI chain Accessing this field activates a dropdown menu containing the 28 available chain numbers Highlight the desired GRI chain number then press ENTER to accept your selection The next settings are the secondary stations Accessing these fields also involves LORAN SETUP LORAN SETUP activating a dropdown menu containing the 5 secondary station identifiers To LORAN CHAIN NUMBER LORAN CHAIN NUMBER i 70 GRI 8970 select a station highlight the desired setting then press ENTER to accept your selection if a secondary station is selected but the identifier is not valid for the active GRI chain the corresponding field on the Position Page will be filled with zeros To remedy this select a valid secondary station identifier SECONDARY STATION 1 NDARY STATION 2 When the LORAN TD position format is active any waypoint stored in the unit s memory will ALWAYS reference the GRI Chain and secondary stations that are currently selected on the LORAN SETUP page This can become confusing when reviewing waypoints that have already been saved in th
50. Fill A track log will be recorded until the track memory is full TRACK RECORD MODE INTERVAL RECORD MODE INTERVAL qerer Wrap Resolution Wrap A track log will be continuously recorded wrapping through the available memory replacing the oldest track data with new data re vae gi MORY USED 1 TOTAL menory Distance e Interval Defines the frequency with which the track plot is recorded Three interval c REESE settings are available Delete Track Delete Track Po E ona e Time Records track plot based on a user defined time interval Resolution Records track plot based upon a user defined variance from your course over ground The resolution option is the default setting and is recommended for the most efficient use of memory and TracBack per formance The distance value entered in the interval field is the maxi A The Wrap option will continuously record a track mum error allowed from the true course before recording a track point P exe the track 16 JEU aa e Distance Records track based on a user defined distance between points ata Ihe Fill option wi a tra ti Md ene e Interval Value Defines the distance or time used to record the track log the memory is full Delete Track Allows you to clear the track log currently stored in memory B The track submenu s default settings may be quich e Start TracBack Converts the current track log into an inverted route and begins ly restored
51. Geeeomli ae Pe 235 SOUNDER Eg B47 pis 19 5 cos 513 so 15 04 FISH H 32 14 53 0 aa 19 5 4080 10 10 6 UL Charleston EDIT ENTER 131 OWNERS MANUAL AND REFERENCE GPOMAP 239 Sounder Software Version 4 01 or above Internal Database Version 3 00 GARMIN Corporation G chart M cartridge data is copyrighted by Navionics Corporation and GARMIN Corporation and may not be copied or used for any other purpose without permission 1999 GARMIN Corporation GARMIN International Inc 1200 E 151st Street Olathe KS 66062 USA Tel 913 397 8200 or 1 800 800 1020 Fax 913 397 8282 Website www garmin com GARMIN Europe Ltd Unit 5 The Quadrangle Abbey Park Industrial Estate Romsey 5O51 9AQ UK Tel 011 44 1794 519944 Fax 011 44 1794 519222 GARMIN Asia Corp 3th Fl No 1 Lane 45 Pao Hsing Road Hsin Tien Taipei Taiwan R O C Tel 011 886 02 2917 4107 Fax 011 886 02 2917 1758 All rights reserved No part of this manual may be reproduced or transmitted in any form or by any means electronic or manual including photocopying and recording for any purpose without the express written permission of GARMIN Information in this document is subject to change without notice GARMIN reserves the right to change or improve its products and to make changes in the content without oblig ation to notify any person or organization of such changes or improvements October 1999 Part 4190 0013
52. L ALARMS STUMP4 0 20 Hote This will clear all proximity alarms Are You Sure ME NO ALARMS On A Sm a8 h A Whenever you enter a proximity waypoint s alarm circle a PRX indicator will appear in the status bar the alarms option must be set to the On position Once you ve left the alarm circle the proximity indicator will automatically reset B To clear all proximity waypoints select the Clear All option from the proximity options page Finish the deletion by confirming the Yes prompt 60 Proximity Waypoints The proximity waypoints list lets you define an alarm circle around a stored waypoint position and can be used to help you avoid reefs rocks or restricted waters Up to nine waypoints may be listed with a maximum alarm radius of 99 99 nautical or statute miles or kilometers If a proximity alarm circle overlaps with an existing alarm circle a Proximity Overlap message will appear each time the unit is turned on If you enter an alarm circle overlap you will only be alerted to the closest proximity waypoint To enter a proximity waypoint 1 Highlight the Proximity Waypoint option and press B 2 Use the key to highlight the first blank waypoint field and press EB 3 Enter the name of the proximity waypoint using the keypad or press GES to select the waypoint from the nearest waypoint list waypoint list or map display 4 Press to confirm The distance
53. MEA In NMEA Out Provides the same input capabilities as NMEA IN with selec table NMEA output A The data transfer options allow you to send or receive almanac data proximity waypoints routes track log data and waypoints to another GARMIN GPS or PC Kit When the Data Transfer option is selected you ll need to specify what informa tion to request or send to the remote unit through the Transfer Mode field The slave setting lets you control all data transfer from the external GPS receiver or B The NMEA In setting allows you to accept PC while the other settings request or send specific data from the primary unit NMEA data from a Yeoman plotter or other compatible device 82 A Using NMEA and DGPS Interface Settings If you are using an NMEA interface format the NMEA format must be specified SETUP MENUS in the NMEA format field that will automatically appear when an NMEA option is SECTION selected The appropriate baud rate will be set automatically See page 96 for a list NMEA and DGPS Setup of NMEA supported sentences To select a NMFA format 1 Select a NMEA IN OUT format from the options page 2 Highlight the NMEA Format field and press Gg 3 Select a NMEA sentence format and press Gg 4 The baud rate will automatically be set to the appropriate speed If you have select mae ad dli ed an NMEA IN OUT setting you must use the same NMEA format for both the input and output de
54. Press the key followed by the G amp S key Highlight the Start TracBack option and press Gy TracBack Navigation con t Once a TracBack has been turned on the sounder will take the track log cur ROUTES SECTION rently stored in memory and divide it into segments called legs Up to 30 tempo rary waypoints e g T001 will be created to mark the most significant features of TracBack Navigation the track log in order to duplicate your exact path as closely as possible To get the most out of the TracBack feature remember the following tips Once turned on a TracBack route will lead you back to the oldest stored track log point so it s a good idea to clear the existing track log at the start of your current trip before you start navigating pra POS nis 1151 BRE go PIS 3994 The RECORD option on the track log setup page must be set to Fill or Wrap and co Q7G s 5 0 cs 295 so 50i there must be at least two track log points stored in memory to create a TracBack route BOOTHBAY HARBOR If there are not enough available waypoints in memory to create a TracBack route you will be alerted with a waypoint memory full message and the receiver will use avail able waypoints to create a route with an emphasis on the track log closest to the desti nation If the track log interval is set to the Time option the route may not follow your exact A path keep the interval set to resolut
55. RATION MODE Simulator TIME OFFSET LOCAL UTC 00 00 Local 24hr DATE g Local 24hr ie Local 12hr TONE SELECTIO UTC MSG and Key DISPLAY CONTRAST BACKLIGHT LANGUAGE 15 Seconds English SYSTEM SETUP OPERATION MODE Simulator TIME OFFSET LOCAL UTC 0 00 Local 24hr DATE 26 JUL 99 TIME 15 47 50 TONE SELECTION MSG and Key DISPLAY CONTRAST BACKLIGHT LANGUAGE 15 Seconds English A The system setup submenu provides access to the sounder s time formats and contrast backlight controls B When entering a time offset be sure to select a positive or negative indicator to the left of the off set value 71 Setup Submenus con t SECTION SETUP MENUS e Time ee Provides a data entry field to enter the time difference between UTC time and local time see page 105 for a list of time offsets When entering a time System Setup and System offset be sure to select a positive or negative offset Entering an offset will not auto Setup Options matically display local time The local setting from the Date Time Selection submenu p must be selected Local UTC Lets you choose to display the date and time in UTC also Greenwich Mean Time time or local time offset from UTC time The default setting is local with a 0 offset If you are boating in the United States be sure to enter a negative time indicator in front of the appropriate time offset for your location VSTEM SETUP o Tone Selection L
56. TY Preface Congratulations on choosing one of the most advanced depth sounding and marine navigation systems available The GARMIN GPSMAP 235 Sounder com bines the proven performance of GARMIN GPS powerful G Chart electronic charting and full featured depth sounding into one unit to create an unsurpassed marine navigation and fishfinding package To get the most out of your new navigation and sounding system take the time to go through this operators manual and learn the operating procedures for your unit This manual is broken down into two parts for your convenience Part One introduces you to the GPSMAP 235 Sounder and provides a getting started tour so that you may become more familiar with the unit This section will provide you with a basic working knowledge of the sounder Part Two is divided into sections that provide detailed references to the advanced features and operations of the GPSMAP 235 Sounder Part two allows you to concentrate on a specific topic quickly without reading through entire por tions of text that you may not need This section can be used to look up detailed information about the GPSMAP 235 Sounder INTRODUCTION Preface WARNING The electronic chart is an aid to navigation and is designed to augment the use of authorized govern ment charts not replace them Only official gov ernment charts and notices to mariners contain all information needed for safe navigation and as always th
57. WN har ness lead The GARMIN GBR 21 is the recom mended beacon receiver for use with the GPSMAP 235 system Other receivers with the correct RTCM format may be used but may not correctly display status or allow tuning control from the sounder unit NMEA Supported Sentences The following formats are supported for connection to up to 3 NMEA devices NMEA 0180 NMEA 0182 NMEA 0183 version 1 5 Approved sentences GPBWC GPGLL GPRMB GPRMC GPXTE GPVTG GPWPL GPBOD SDDBT SDMTW and SDVHW Proprietary sentences PGRMM PGRMZ alt PSLIB beacon receiver control input eNMEA 0183 version 2 0 Approved sentences GPGGA GPGLL GPGSA GPGSV GPRMB GPRMC GPRTE GPWPL GPBOD SDDPT SDMTW and SDVHW Proprietary sentences PGRME estimated error PGRMM map datum PGRMZ altitude PSLIB beacon rec control input To interpret the sentences the NMEA standrad can be purchased at www nmea org PHYSICAL Case Gasketed Construction SECTION LHXLTWIGD APPENDIX 19 2 x 19 74 x 6 7cm Specifications Weight Less than 2 lb Temperature Range 4 to 158 F 20 to 70 C PERFORMANCE GPSMAP 235 Sounder Receiver 12 parallel channel Acquisition Time Approx 15 seconds warm Approx 45 seconds cold Approx 5 minutes AutoLocate Approx 5 minutes Search the sky Update Rate l second continuous mE painde 1 5 meters 3 16 ft eni For transducer specifications see the 15 meters 49 ft RMS ooklet included wi
58. a larger target etc 0 0 to 0 0 SIM 94 Sometimes you see fish symbols on the screen when actually there are no fish because at times the sounder may not be able to distinguish between fish and cer tain other suspended objects Practice using the sounder with and without Fish ID to become more familiar with it A When FISH ID is turned off all sonar target information is displayed in an unprocessed form There are three Fish ID settings B The range scale will be highlighted when using e Off Is the default setting and displays all sonar target information in an the arrow keypad to adjust manual range mode or unprocessed form when switching between auto and manual mode e On Shows small medium or large fish symbols in place of arches and displays other echo information thermoclines thin stumps etc as shades of gray e Fish Only Shows fish symbols Sounder Setup Page con t SECTION SOUNDER PAGE To select Fish ID Fish ID and Water 1 Highlight the FISH ID option and press ES The FISH ID submenu will appear Temperature Setup 2 Highlight the desired setting and press Ez Target Depth Displays the digital depth of each fish symbol e On Shows fish symbols with corresponding digital depth Off Does not display depth pet 274 Manval SOUNDER SETUP To select target depth o n TARGET DEPTH m SE ji Gon Off 1 Use the keypad to highlight the target depth field and press Gg A cor
59. a second time shows you twice the detail of the original at half the depth in one screen 3 Pressing a third time shows you four times the detail in the zoomed part of the screen at a quarter of the original depth 4 Pressing a fourth time shows you four times the detail in the zoomed part of the screen at a quarter of the original depth in one screen Note When dual frequency is selected there is no split zoom with a full range over a zoomed window Both the 50 kHz and the 200 kHz will zoom together regardless of which is on top or bottom To turn the zoom feature off press until the original scale picture appears and a triple beep sounds Lets continue the Getting Started Tour with the Map Page 1 Press EB GETTING STARTED Zoom Feature o A c B Mas SIM 0 ae eX 200K A Use the zoom window to view a smaller portion of the complete range in greater detail B Moving the zoom window allows you to quickly view any spot between the surface and the bot tom See page 27 for directions on moving the zoom window 10 GETTING STARTED Map Page Bes 2615 ois 195 eee O56 ois 0 565 cos 261 se 150 cos O56 sos 15 0 FISH N 32 14 53 0 264 19 5 H080 10 10 6 MESS 7 A The map sounder split screen displays cartography and sounder information at the same time The split screen only functions as a map page and any changes to the sounder display must be made from the Sounder Page Use
60. age The digital crosstrack error option is especially useful to dis play the exact distance you are off course in 51 Main Menu Page The main menu page provides access to various waypoint system navigation and interface management and setup menus SECTION MAIN MENU PAGE Overview MAIN MEHU Proximity Waypoints Create Waypoint Waypoints Routes Track Trip amp Fuel Planning MAIN MENU MAIN MENU System Setup Nearest Waypoints Nearest Waypoints Havigation Setup Proximity Waypoints Proximity Waypoints Timers amp Alarms Create Waypoint Create Waypoint Input Output Waypoints Routes Track Trip amp Fuel Planning System Setup Track Trip amp Fuel Planning System Setup To access the main menu page from any page in the sounder 1 Press RD twice Navigation Setup Navigation Setup Timers amp Alarms Timers amp Alarms Input Output Input Output The 11 submenus are divided into categories by function A The waypoint category options on the main menu To select a submenu from the main menu page page are described in the waypoints section on pages 59 62 1 Highlight the submenu you want to view and press 3 For specific instructions on using a submenu see the waypoints route or setup B The routes category options are described on pages sections of this manual 66 69 52 Creating and Using Waypoints The sounder stores up to 250 alphanumeric waypoints with user defined sym bol
61. ap Page when 50 kHz 200 kHz is selected 200 kHz only is always shown in the lower half of the split screen To modify or access the Sounder Page display press or until the actual Sounder Page appears make any desired changes and then return to the split screen Map Page To select a page display option 1 Highlight the Setup Page Display option and press Gay 2 Select the desired option and press Gay SECTION MAP PAGE Split Screen Option ETA Est Time of Arrival XTK Cross Track Error f YMG Velocity Made Good TRH Turn WPT Active Waypoint DPT Depth TMP Temperature STW Speed Thru Water The Map Page can be configured to display a vari ety of navigation data Each data field can be set to display one of thirteen data options 4 egroy MAP PAGE Data Fields Restore Defaults Setup Simulator Map Page Options con t eChange Data Fields Allows you to specify the type of data that is displayed in each data field on the map display There are thirteen options e BRG Bearing to active wpt DIS Distance to active wpt e SOG Speed over ground COG Course over ground ETE Estimated time enroute ETA Estimated time of arrival e XTK Crosstrack error VMG Velocity made good TRN Turn angle to wpt e WPT Active wpt name ec TI cof OPTIONS DPT Depth TMP Temperature N Maximize Map E Maximize Map f e STW Speed through water Map Out
62. as 71 Creating Graphically 66 CADO 25 os cs onus dod 9 fora eee ee how 70 Custom COMLMENE sas 44 Lene sedan ds 70 De3etlyAllg vine does ene de te de ee ai 69 71 TAVIS 201a duca eth deir d aoPhobar dod did 69 POUE LOETI a eiekhe once eee cede ace 70 Route OMONE Lis eu ayes deve E oes at 70 Route Planning Mode 15 Route Waypoint iscas da ob cheers bee 67 E TN ty ace bod oe Pa BH ge yes aM oe ess 67 EMS SION getering ere ee 68 70 Editing On Map ias sss siete ose 70 InserE Bg NEW ona ace due on IC ted 67 REVIEWING i ousueRus ed race Mai aed 67 DCUM oe 2 2 odas aokk a oars ae a ee E 67 Screen Contrast esses 3 searching Ihe SI a aet so ance oe en en 20 DeHSICyIty AdIUSU ueescedeseue kd adr E ACER 29 DEMS enra aa wes deate ats feros a ba bare 97 APPENDIX Index SECTION 107 108 SECTION G APPENDIX Index Simulated Boat Speed ssid saiua dadia aa 12 simulated Boat Steering ce REY as 16 Simulating Navigation 20 Simulator Mode oc ccg choos dew eee on een 4 Sounder Taming OFT iua acest mda 18 Sounder Alarms sis stoei ie aoa sa dat h 8l BOUNCE PASE vied ea RE ews id dote ee es 7 Sounder Page Adjustable Scale ri SOUNGEr Seti PAC cine is a dae g Beg oe canina 33 SDECITIGACIORS sosy dope pb La dede qd ree ds 97 Speed CAIIDEAEIOEE Loa scs avy gama c3 tee e E 36 speed Over Ground SOG sas cesis 15 Speed Through Water STW 105
63. ation Waypoint A specific location saved in the receiver s memory Whiteline A term applied to the portion of the sonar display which shows the area of strongest sonar return typically the bottom The chart below gives an approximate UTC time offset for the various longitu dinal zones Check with local charts for more detailed information If you are in daylight savings time add one hour to the offset APPENDIX Longitudinal Zone Offset a Time Offset Chart W180 0 to W172 5 12 W172 5 to W157 5 ll W157 5 to W142 5 10 W142 5 to W127 5 9 W127 5 to W112 5 8 W112 5 to W097 5 1 W097 5 to W082 5 6 W082 5 to W067 5 5 W067 5 to W052 5 4 W052 5 to W037 5 3 W037 5 to W022 5 2 W022 5 to W007 5 W007 5 to E007 5 0 EDU T to P0225 l E022 5 to E037 5 2 EUS 5 wE 3 EBU52 5 10 EOD 4 E067 5 to E082 5 J E082 5 to E097 5 6 E097 5 to E112 5 7 E112 5 to E127 5 8 E127 5 to E142 5 9 E142 5 to E157 5 10 E157 5 to E172 5 ll E172 5 to E180 0 12 A 105 106 SECTION G APPENDIX Index 2D NAVI CANON oo dace emn are Roter anh rs chon 20 Dy AGA OM HC 20 Accessories o sss vi Acquiring Satellif s 142322222 vmm ER ep 20 Aetve Route TARE a sd duse eR bu decani cen 65 12 Addresses Phone Numbers Inside Cover Almanac Data acc uu a cese e e te 103 Anchor Drag AA aas ee dades 8l Arrival Alarmi 1 24622 RR ERRORS 8l Auto Calibratio
64. aus eaqui XN e OWED 15 fo CPC TP 103 Heading eos ire iod aed a eret RU hac Sr edd 79 Highway Scale 0 2 0 000 00000200000 16 Highway Configuring case res Jl i Mr 106 AO eee bons Gaetan ada dip Uds l Input Output Sep issuer datei mi 82 instalation i os cee ne ori Up R e ERES 90 Keel Offset 000 000 ccc cee eee ee 395 Keypad Usa 4 cq edere c3 denexa tr a eds viii Latitude sess 103 Local UE s ica dca cg diet meon dover a obra 78 BORA es dae du sued adde eons 86 89 Main Menu sss sess sss 17 18 Mam MEMU PEDE sacs wurde d 2d ook bce m dia 52 Manual Speed Calibration 37 Manual Range Mode 8 Map Configuration Enable Or Disable A Row 45 Map Calibration i eee eh tps 45 Map Colors naaa auaa aaa 46 Map Danit s ou uidit adio obe Pe ees m dedo s 80 Map DOWNS esca ea xad cer PET OH eRe aes 94 Map Modes 0 000 cee eee ee 40 MAD Orientation 1 rs 4e4e oooh tee eh bow ade 4 WAS nena ene td Sas eua dudo sd 10 39 Center On First Wt sace caw edge Ge den d 69 Center OM Vessel ua cive nn dicet e a3 d uo 69 COTO 13 ae ee unc vario ped drei 4 OMNES ON zoe queis ae bas ES a eee y 43 vc P tee 42 MAD Pape COPIES uc be ae arid Rae dd 3 23 Map Sounder Split Screen 10 28 Mak key T 53 Marking A Position asier odes ce anter 6 MANZE BIA serikat qe cia cee dades T Measure DBGVDIS sami e qr te de ms 43 o ee 98 MOD e
65. aypoint select the Move 1 Highlight the Move option and press IJ Move the cursor to the new map position option and press EDIT ENTER and press B To insert new route waypoint s at the beginning or end of the route B Move the arrow cursor to the new waypoint posi tion and press EDIT ENTER to confirm 1 Select the first to add waypoints to the beginning of the route or last to add waypoints to P J the end of the route route waypoint with the map cursor and press Gy 2 Highlight the Insert option and press E3 3 Move the cursor to the new waypoint position and press Gay 4 f you are not inserting an existing waypoint press to confirm the new waypoint 5 Repeat steps 3 and 4 to insert additional waypoints or press to finish E 67 Routes con t SECTION ROUTES The route edit mode also allows you to insert a new route waypoint in any route leg using the map cursor Route Edit Mode To insert a new waypoint between two existing route waypoints 1 Use the cursor to select the leg you want to insert the new waypoint in the route line will change to a dotted line when the leg is selected and press E3 2 Move the cursor to the new map position and press EB 3 If you are not inserting an existing waypoint press to confirm the new waypoint ROUTEEDT ROUTEEIT The route edit options page provides access to a variety of features which can 493 0 943 W092 45 296
66. both waypoint fields blank 3 Press to confirm 4 Highlight the date field and press Gag 5 Enter the date you want sunrise sunset information for the current date and year will be used as the default setting and press A The sunrise and sunset times for the arrival date will be displayed at the bottom right of the planning page Setup Submenus The last four options listed on the main menu page provide access to the vari ous system navigation alarm and interface settings of the sounder The system setup submenu is used to select the operating mode date and time formats tone preferences backlight timeout and display contrast e Operational Mode Lets you select between normal simulator sounder only or GPS only mode In the normal mode both GPS and sounder functions operate at the same time In simulator mode the sounder only pretends to track satellites to allow you to learn how the unit works Waypoints and routes created in simulator mode are saved in memory and are available for use in normal mode The sounder only and GPS only modes allow you to determine what type of information the sounder will give you GPS only mode is useful when using the unit for land naviga tion while enroute to the water Sounder only mode is an option if you do not want GPS information such as position speed heading and map functions while on the water SETUP MENUS SECTION Sunrise Sunset Planning 10 i System Setup SYSTEM SETUP OPE
67. ce 91 To flush mount the sounder 1 Remove the four M5 screws from the back of the unit and remove the mounting bracket SECTION APPENDIX 2 Using the mounting template provided in the box determine where you wnat to mount the unit and Installation tape the template in place 3 Using a hammer and center punch mark the centers of the relief hole and mounting screw holes 4 Using a drill and a 2 75 hole saw cut the center relief hole from the panel Drill four 0 25 screw holes using a 1 4 drill bit 5 From the front place the unit until the relief hole rests flush against the mounting surface 6 Secure the unit to the mounting surface using M5 screws Note for thick mounting surfaces insert the M5 screws directly through the four drilled holes figure 1 For thin panels place the mounting bracket on the back side of the panel for additional support figure 2 7 Attach the power data transducer cable and antenna connector CAUTION Zs senden c Irom panal The four M5 screw holes on the back of the unit are blind holes having a closed end Do not try to force screws deeper into these holes than the holes will allow Over insertion of screws will damage the housing and break the waterproof sealing GPSMAP 235 Mounting Template 92 A Figure 1 For thick mounting sur faces insert the M5 screws directly through the four drilled holes Figure 2 For thin panels place the mounting brachet on
68. ce you have selected a route from the route page additional functions for that route are available from the route options page To display the route options 1 Press CR To select a menu option 1 Highlight the desired option and press Ez The following options are available from the route list page o Create New Route Allows you to create a new route see page 66 e Activate Route Activates the selected route and begins navigation o Invert Route Activates the selected route in reverse order and begins navigation e Edit On Map Allows you to edit the selected route graphically see page 67 for spe cific instructions Edit As Text Allows you to edit the selected route by text see page 68 for specific instructions Route List Page Options cont SECTI EGTION e Clear Route Allows you to clear all waypoints from the selected route ROUTES 9 To clear the selected route Route List Options 1 Highlight the Clear Route option and press B 2 Press to confirm the clear route warning D OINT DIS ETE CLEAR ROUTE ROUTES a tate ts ve 01 TE TARPN7 z not delete any m S waypoints 0 MARINA STUMP2 CLEAR ROUTE Note This will not delete any waypoints j Are You Sure f Copy Route r NO Are You Sure Ma No SIM 8i e Copy Route Allows you to copy the waypoints of a selected route to another route The route copy function can be used to copy a TracBack ro
69. ct Position amp Press ENTER SIM 43 32 A To calibrate the map highlight the Calibrate the Map option and press EDIT ENTER B A satellite icon will remain on the map to indi cate the GPS position while the boat marker will reflect the calibration changes CAUTION The map calibration feature should never be used to attempt to correct Selective Availability errors 45 Map Page Options con t SECTION MAP PAGE eSet Map Colors The next option available from the map configuration page is the set map colors option which allows you to define the fill color grayscale of the land and water used on the map display Three options are available no color no fills for land or water gray land white water the default setting and white land gray water Map Colors Restore Defaults Page Display To select a map colors option 1 Select the Set Map Colors option and press 3 2 Highlight the desired map color option and press Gz e Restore Defaults Resets all map configuration options to their factory settings DOG Hass Ee To restore the map configuration options to the factory defaults La Disable Row UNUM 1 Wi Calibrate the Map EE 1 Highlight the Restore Defaults settings and press Ga Set Map Colors Ac m Press twice to exit the map configuration page and access the map display T Press on the map display to once again access the main options menu The Main Menu page
70. d at the top right corner of the page Press EB Underwater Waypoints The underwater waypoint feature marks a waypoint position and its depth Marking an underwater waypoint makes it easier to find and use an object for a future fishing location reference point 40 SIM 0 28 ETUR A When switching between auto and manual MENS l vs To mark an underwater waypoint modes the range scale will be highlighted 1 Press to pause the screen movement B The depth oj the n point is captured with the 2 Use the keypad to move the cursor onto the target you want to mark A data underwater waypoint feature field will appear with the cursor s depth and bearing and distance from your cur rent position 3 Press Ege A waypoint page will appear with the waypoint s coordinates default three digit name and depth 4 Enter any waypoint information such as name comment etc and press Gay 8 B When finished press or GS Zoom Feature The zoom feature allows you to view a smaller portion of the complete range in greater detail The zoom feature operates in auto or manual mode Auto zoom will follow the bottom contour while manual zoom will display the selected depth For more on the zoom feature see pages 26 27 To use the zoom feature 1 While viewing the Sounder Page press II The zoomed part of the display always the bottom part shows you twice the detail of the original display at half the depth 2 Pressing IBS
71. da reb qun eee eee 58 Review Edit From Map 58 Reviewing and Editing af Eea anli ot Gan ducas eder a sea ame Eu mde ee 58 Waypoint Definition Page 58 MayDONI LSU Xie aria te ed ita deed aS 6l Waypoint SUDMENUS 4 xx be deese a ci 59 Waypoint Symbols 004 6 Waypoint Symbol Changing 57 Website Address sse ck mn Inside Cover Whiteline 0 0 000 7 104 Whitelne Adjust oae spe bae amt Cb be we a 30 Window Mod uud sees aueh e eph Ee 8 Zoom Feature aaa 9 1999 GARMIN Corporation www garmin com GARMIN International Inc 1200 E 151st Street Olathe KS 66062 USA GARMIN Europe Ltd Unit 5 The Quadrangle Abbey Park Industrial Estate Romsey SO51 9AQ UK GARMIN Asia Corp 3F No 1 Lane 45 Pao Hsing Road Hsin Tien Taipei Taiwan R O C Part Number 190 00138 10 Rev B
72. deleted at any time using the waypoint definition page The waypoint definition page is accessed by highlighting the desired waypoint from the map dis play or selecting it from waypoint or nearest waypoint list and pressing the key The waypoint definition page can also be accessed from the proximity way point page by highlighting the desired waypoint and pressing EB twice Reviewing and Editing Waypoints To access the waypoint definition page 1 Use the keypad to highlight the desired waypoint on the map display or any waypoint list WAYPOINT 4 wamoNr 2 Press to display the waypoint definition page icd ies Pay YP pag N 28 42 553 N 28 42 553 ee WO89 33 923 WO89 33 923 From the waypoint definition page you can change the waypoint symbol posi DEPTH 87 9 FT SHARP DROPOF g tion coordinates waypoint comment or depth for the selected waypoint To change the waypoint symbol BRS 1835 DIS 2 14 Done 1 Highlight the waypoint symbol field and press E3 2 Use the keypad to select the desired symbol and press to confirm To change the position coordinates A The waypoint definition will ri when ever a waypoint is selected from the map or a 1 Highlight the coordinates field and press Guy P J P waypoint list 2 Use the keypad to edit the coordinates and press to confirm B A twenty character custom comment may be To change the waypoint comment assigned to every waypoint The d
73. ditions Turn the unit off and back on to reset e Simulating Navigation The receiver is in simulator mode 20 A Satellite Status Page Options The satellite Status Page features an options menu that provides access to func tions and features relating to the Status Page aay Se heey quiring Satellites OPTIONS 7 Initialize Position Start Auto Locate North Up SkyView Start Simulator n TTTTI Sie TIE 020307 151819262731______ lei jJ To display the Status Page options menu 1 From the Status Page press GE There are four options e Initialize Position Allows you to initialize the receiver graphically or by text See page for instructions on initialization e Start AutoLocate Allows the receiver to locate your position automatically o North Up SkyView Allows you to select between a north up or track up sky view display e Setup Simulator Allows you to define speed course and position values while in simulator mode See the getting started tour for more on using the simulator mode To select a menu option 1 Highlight the desired option and press 3 STATUS PAGE SECTION Initialize Position AutoLocate North Up and Setup Simulator SETUP SIMULATOR 26 COG OPTIONS Auto COG 3537 7 Initialize Position i SOG Start Auto Locate elg 0 Horth Up SkyView POSITION N 35 53407 WO98 45 902 im ALTITUDE DEPTH 990 57 M T reston Im H
74. e Route Stops navigation of the route currently selected B 69 To exit the route edit mode and return to the route list page press El SECTION ROUTES Route List Page ROUTES ROUTES DOCK TARPN7 OPTIONS 02 MARINA STUMP2 2 Create Hew Route 43 Activate Route Invert Route Edit On Map Edit As Text Clear Route Copy Route Deactivate Route Press MENU to see the Main Menu page L A The route list page displays each route stored in memory along with a 16 character user com ment The default comment is the name of the first and last route waypoint B The route list options page provides quick access to many route functions including activating and deactivating a selected route 10 Route List Page The route list page numerically lists all the routes currently stored in memory with the route number and comment displayed Route 00 is always reserved for the TracBack route while routes 1 20 serve as storage routes route 20 is stored as the GPSMAP tour route which may be deleted at any time From the list you may enter your own 16 character route comment and select a specific route for activa tion editing or other route management functions To enter a custom route comment 1 Highlight the desired route and press EA 2 Press the left arrow key of the keypad to clear the comment field 3 Use the keypad to enter the new route comment and press Gay On
75. e unit s memory A It is important to set the correct GRI Chain and secondary stations for the waypoint that you want to create The GRI Chain and secondary station fields cannot be deleted on the Create If the active GRI Chain and secondary stations have been changed since the way point was created the waypoint will now reference the active GRI chain and sec ondary stations and the TD coordinates will be adjusted accordingly Remember Waypoints Page that the GPS is not relying on the LORAN signal for navigation and actually con B To select a station highlight the desired setting verts the TD coordinate to a useful LAT LON coordinate in the background then press ENTER to accept your selection before storing the waypoint in unit memory or using it for navigation Because of this the unit can navigate to a TD coordinate anywhere in the world Creating Waypoints in the LORAN TD Format Waypoints can be created graphically using the Mark Key and by Text Entry see page 53 Waypoints can also be created using LORAN TDs To create a waypoint using the LORAN TD Position Format 1 Verify that the correct GRI Chain and secondary stations are selected on the LORAN SETUP page 2 Following the instructions given in the Waypoint section of the manual begin cre ating a new waypoint 3 Highlight the position field and press ENTER 4 Using the data entry technique described in the Waypoint section of the manual enter the TD
76. e user is responsible for their prudent use vi INTRODUCTION Packing List Before installing and using with your sounder please check to see that your package includes the following items If any parts are missing please contact your GARMIN dealer immediately Standard Package GPSMAP 235 Sounder External GPS Antenna and 30 cable Power Data Cable Mounting and Gimbal Bracket Owners Manual e Quick Reference Card For assembly part number 010 00119 01 a transom mount transducer is included Optional Accessories e G chart Electronic Chart Cartridges e PC Kit e In Hull and Transom Mount Transducers with or without temperature and speed through water capability Additional mounting brackets and cables QU Fist iro P i Bo M ii n inler cds Pica e iii iv lg eod NINE ur dasa qnsiseioanas v vi Tablet COMIN OU Dad Uae seraano heen anaran ae aE vii viii CIERRE i e E E een ere ee 1 18 Section 1 GPSMAP Status Pag ss vcssncancsrsancnassncnnseyecsecsseaehanedeeassunbiasesensceeocaeset 19 21 Satellite and receiver status entering initial positions Section 2 Position Patt e 22 23 Position Page description and uses seuil Mr e 24 38 Sounder Page description zooming underwater waypoints and options Seccion 4 Map Pape uus edo ERREUR PERPE EM SLATE a aaa
77. ee options 1 Off No arrival alarm will sound 2 Auto An arrival alarm will sound one minute before the destination based upon your current speed and course over ground and 3 On An arrival alarm will sound at the alarm distance specified in the distance field for the destina tion waypoint e Crosstrack Alarm Provides an alarm for crosstrack error XTK when your vessel is off course by more than a specified distance up to 99 99 units e Anchor Drag Alarm Lets you specify an alarm to sound when you ve exceeded a specified drift distance up to 9999 units Whenever the anchor alarm is triggered an anchor symbol will appear in the status bar Sounder Alarms Allows you to set shallow and deep depth alarms and an alarm for specific sized fish targets There are three options Shallow On Off Sounds if depth equals or is less than the selected value Deep On Off Sounds if depth equals or is more than the selected value e Fish On Off Select from All Targets Medium Large Targets or Large Targets TIMERS amp ALARMS 03 54 32 ANCHOR DRAG ALARM Off SOUNDER ALARMS Shallow Off 10 0 Deep Off 200 0 Fish Off Med Lrg Targets SIM 47 SECTION SETUP MENUS Timers and Alarms 0 i TIMERS amp ALARMS TIMER Stop 03 54 32 CLOCK ALARM Off 14 00 ARRIVAL ALARM CROSS TRACK ALARM Off 2 00 Shallow On l Shallow Off 10 0 Deep Off 200 0 Fish Off Med Lrg Targets A The timer field can be set to cou
78. efault comment 1 Highlight the comment field and press E3 is the depth at the waypoint s position for way points marked with the MARK hey and underwa 2 Use the LEFT arrow of the keypad to clear the comment field ter waypoints For all other waypoints those cre 3 Use the keypad to enter a comment up to 16 characters ated with the ENTER button the current date 4 Press to confirm will be the default comment 58 SECTION WAYPOINTS Waypoint Definition Page Options MOVE WAYPOINT FISH 2 N 43 27 048 3475 3 39 H078717 478 LAKE ONTARIO OPTIONS Rename Waypoint Delete Waypoint Main Menu page 5k HOVE 4 A To review or edit a waypoint on the map display select the Edit Wpt On Map option B To move the selected waypoint press EDIT ENTER Use the arrow keypad to select the new position and press EDIT ENTER to finish Waypoint Definition Page Options The waypoint definition page also features an options menu that allows you to edit the selected waypoint on the map display rename the selected waypoint or delete the waypoint from memory To display the waypoint definition page options menu 1 Press the GED key To review or edit the selected waypoint from the map display 1 Highlight the Edit Wpt On Map option and press 3 2 The selected waypoint will appear on the map display with the waypoint name and coordinates shown at the top of the map along with the distance
79. entify what mode the unit is in satellite signal presence The sounders three level screen backlighting feature is controlled with key and which alarms if any have been triggered The and can be adjusted at any time from any page current scale will also be displayed if you are view ing the navigation or Map Page or if you are using the sounder zoom feature When you are viewing 1 Press the ET repeatedly until the backlighting is at the desired level off 1 2 or 3 Bj the Sounder Page it will show the transducer frequency To turn on and adjust the backlighting GETTING STARTED H Status Page Simulator Mode OPTIONS START SIMULATOR Initialize Position j Warning Do not use this mode for navi Track Up SkyView cellam Exit Simulator Setup Simulator Press MENU to see the Main Menu page A To start the simulator confirm the simulator warning Do not use simulation for actual navi gation or to determine actual water depth B Whenever the sounder is in simulator mode a Setup Simulator option will appear on the options menu for each page An Exit Simulator option will also appear on the Status Page options menu Status Page Status Field gt 3D Navigation Satellite Horizontal Accuracy Sky View Dilution of Precision Signal Strength Indicators Status Bar Water Depth The Status Page provides a visual reference of satellite acquisition and recei
80. er map scale 2 Press to confirm your selection The sounder will now begin searching for the appropriate satellites for your present position and should acquire a fix in approximately one minute While the receiver searches for satellites a flashing satellite symbol will appear at the left hand side of the status bar located at the bottom of the screen The status bar is used to monitor satel lite signal reception and activated alarms it also shows the digital depth on a continual basis A signal strength bar for each satellite in view will appear on the lower half of the page with the appropriate satellite number under each bar The progress of satellite acquisition is shown in three stages e No signal strength bars The receiver is looking for satellites e Hollow signal strength bars The receiver has found satellites and is collecting data e Solid signal strength bars The receiver has collected the necessary satellite data and the sounder is ready to use Once the receiver has collected information from at least three satellites the satellite symbol on the status bar will stop flashing Getting Started Tour The GARMIN GPSMAP 235 Sounder is a powerful electronic navigation and depth sounding system that provides detailed chart coverage and convenient con GETTING STARTED trol of many advanced features right from the screen display This tour is designed Power On Screen Contrast to take you through the basic pages and functions
81. es etc is needed B To define a starting point for a TracBack route first clear the track log 64 A MOB The man overboard feature MOB is used in emergency situations such as man overboard or to quickly mark a spot To turn on the MOB feature 1 Press the EZB key 2 Press the key to confirm and begin navigating to the MOB position Once a MOB has been turned on the MOB symbol will appear on the map dis play and the destination field on the Map Page will display the bearing distance and ETE to the MOB position based on your present speed and course To stop navigating to the MOB position 1 Press the key followed by E to display the GOTO options page 2 Select the Cancel GOTO option and press B TracBack Navigation The third method of navigating to a destination is by TracBack TracBack allows you to retrace your path by using the track log automatically stored in the receivers memory which will eliminate the need to store waypoints along the way TracBack routes are created by reducing your track log into a route of up to 30 waypoints and activating an inverted route along those points To clear the track log and define a starting point for a TracBack route 1 Press the C key twice to display the main menu page 2 Highlight the Track option and press 3 Select the Delete Track option and press B 4 Highlight the Yes field and press EA To turn on a TracBack route 1
82. ets you select an audible tone for es n and keystroke confir OPERATION MODE OPERATION MODE mation the default setting messages only or no sound at all Caution Settin GPS Only Sounder Off GPS Only Sounder Off the tone selection for no sound will prevent an audible tone for all alarms includ TIME OFFSET LOCAL UTC TIME OFFSET LOCAL UTC 4 ing shallow water and proximity waypoints 0000 Local 24hr 00 00 Local 24hr p TM DATE 09 JUL 99 i EM 22 35 ES e Display Contrast Provides a slide bar to ne the LCD screen contrast in order E to compensate for changes in temperature or lighting conditions o Backlight Timeout Provides an automatic shutoff for the sounder s screen back lighting Six settings are available No Timeout the backlight will stay on until it is LANGUAGE EEEE turned off 15 seconds default setting 30 seconds and 1 2 or 4 minutes English English i l e Language Allows you select from nine languages the unit can display The avail able languages are English Danish Finnish German Italian Portuguese Spanish and Bed A The None tone setting will prevent an audible tone from sounding for any hey presses messages or alarms Regardless of the tone setting MESSAGE PRESS PAGE will continue to be flashed on the status bar for any system messages or alarms The system setup page also features an options menu that allows you to quickly reset all the system setup o
83. eview a selected position directly from the map display To select an on screen waypoint or navaid with the cursor 1 Use the keypad to move the cursor to the desired waypoint or navaid if there are several waypoints grouped closely together zoom in closer for a better view 2 When a waypoint or navaid is selected it will become highlighted on screen with the name and position displayed To eliminate the cursor and re center your position on screen 1 Press the key The cursor can also be used to create new waypoints directly from the map To create a waypoint with the cursor 1 Use the keypad to move the cursor to the desired map position 2 Press EB 3 Press to confirm the new waypoint using the default three digit name SECTION MAP PAGE Using the Cursor BRG 4 DIS A Iii cos 358p se 0 0 s E 069 0 49 1032 99 287 4 0 49 287 0011 e MAP POSITION N 38 12 255 WOS2 45 256 A To create a new waypoint at the cursor move the cursor to the desired position and press EDIT ENTER B The create new waypoint page will appear where you may change the waypoint name symbol and comment before saving the waypoint M 42 te MAP PAGE Map Scales EM comu A cos 356 soe 0 04 A Whenever the selected map scale exceeds the reso lution of the chart by up to two settings an Ovr Zm warning will appear in the scale field B Whenever the selected map scale e
84. firm 4 The select route page will appear with the GPSMAP TOUR route highlighted 12 B 5 Press G9 The Map Page will reappear and display five waypoints chained together in a simple route with your boat at the first route waypoint Going to a Destination con t A data field at the top of the page will now display the bearing and distance to the second route waypoint To get started lets enter a speed for our vessel which we can do from the Setup Simulator listing on the map options menu The setup simulator page is available from any page in the main page sequence To enter a boat speed 1 Press the CB key to display the map options menu 2 Use the keypad to select the Setup Simulator option and press EB 3 Once the setup simulator page appears press to access the SOG field 4 Use the keypad to enter a speed of 60 knots 5 Press to finish and GJ to return to the map display Once a speed has been entered you ll notice that the map will begin to move slowly keeping your boat centered on the display To get a better view of whats going on zoom in to a closer map scale 1 Press the key to select the 16 nm scale You ll now have a clearer picture of the route we are navigating along with an outline only presentation of the surrounding shoreline Because the usable range of the built in database is only valid to 64 nm scale 32nm in the U S we no longer have full cartography available Keep in m
85. from the track options page route navigation along the track log To reset all track options to the default settings 1 Press GW followed by EB 74 E Trip and Fuel Planning SECTION The trip and fuel planning submenu lets you plan and review distance fuel ROUTES and ETE ETA information between any two waypoints your present position and a stored waypoint or any part of a stored route Sunrise and sunset information is Trip and Fuel Planning 9 also provided Two planning modes are available point to point and route i planning To use the point to point planning mode 1 Highlight the Trip amp Fuel Planning option from the main menu page and press B 2 If the plan field is not set to Point To Point press the E key and select it from the TRIP amp FUEL PLANNING TRIP amp FUEL PLANNING options page Point To Point Point To Point 3 Highlight the first waypoint field and press ES Press the left arrow key to clear the field and use the keypad to enter the name of the starting waypoint You may leave do ced e ae the waypoint field blank to use your present position or press the EJ key to select the DEPART 18 JUN 96 DEPART Kg JUN S6 waypoint from the nearest list the waypoint list or the map display Press to con LXI lees DTK O86 FUEL DTK O86 FUEL 157 0 firm the waypoint DIS 238 95 ETE DIS 238 95 ETE 06 49 4 Move the field highlight to the second waypoint field and follow the steps above to a
86. from this conversion is approximately thirty meters When the sounder is placed in the LORAN TD format mode the sounder simulates the full operation of a LORAN receiver Position coordinate may be displayed as TDs and all navigation functions may be used as if the unit were actually receiving LORAN signals Selecting and Setting Up the LORAN TD Format The LORAN Position Format field is located in the Navigation Setup Menu To access the list of available Position Formats highlight the Position Format field and press ENTER Scroll through the list of formats until LORAN TD is highlighted then press ENTER to accept and activate the LORAN TD position format After the LORAN TD format is selected a new field will appear to the right of the Position Format This field called Setup TD provides access to the LORAN Setup page The LORAN Setup page contains the fields where the GRI Chain Number and Secondary Stations are selected To activate the LORAN SETUP page highlight the Setup TD field and press ENTER SECTION ORAN TDs Using the LORAN TD Position Display Format j b30 060 E 120 150 POSITION 7980 11978 5 TD WX 28138 5 TIME VELOCITY FILTER 19 45 50 Auto A Position coordinates may be displayed as LORAN TDs and all navigation functions may be used as if the unit were actually receiving LORAN sig nals B Scroll through the list of formats until LORAN TD is highlighted then press ENT
87. gardless of the map configuration setting When the selected zoom range exceeds the resolution of the chart in use by more than two settings all cartography will be replaced by a track plot dis play and a No Map warning will appear in the scale field The lat lon grid will be displayed regardless of the map configuration setting Additional caution should be used while navigating in track plot mode Map Page Options The Map Page options menu provides access to many of the features and func tions that will help you configure the Map Page to your own preferences To display the Map Page options menu 1 From the Map Page press GE To select a menu option 1 Highlight the desired option and press Ez There are eight options e Maximize Map Allows you to view the map display with or without a data win dow Pressing removes the data window from the Map Page To display the data window once again highlight Normal Map from the options menu and press EDIT ENTER e Map Outlines Off Allows you to view the map display with or without G chart cartography outlines Pressing removes the outlines from the map dis play To display the map outlines once again highlight Map Outlines Off from the options menu and press GB e Measure BRG DIS Allows you to measure the bearing and distance between any two points on the map display To measure the bearing and distance between two points 1 Highlight the Measure BRG DIS
88. ghway Allows you to select what waypoints are shown on the high way page Four options are available Nav amp Nearest Waypoints All route and nearest waypoints will be displayed Nav Waypoints Only waypoints in the active route will be displayed e Active Waypoint Only the active waypoint will be displayed No Waypoints No waypoints will be displayed To configure the highway display 1 Highlight the Configure Highway option and press 9 Select the desired option and press B e Restore Defaults Resets all Navigation Page options to their factory settings e Setup Simulator Allows you to define simulator speed course altitude depth and position values See page 13 for more details on using the simulator mode e Auto COG Allows you to reset automatic steering while simulating navigation and cancels any course adjustments made with the keypad NAVIGATION PAGE SECTION Data Fields Configure Highway Auto COG ERG ERN DIS Distance SOG Speed Over Ground COG Course Over Ground jETE Est Time Enroute ETA Est Time of Arrival XTK Cross Track Error VMG Velocity Made Good TRN Turn CTS Course To Steer DPT Depth TMP Temperature SOW Speed Over Water feet miles or meters B To select what waypoints appear on the graphic highway highlight the desired setting and press EDIT ENTER Thirteen data options are available for each data field on the Navigation P
89. gs B Tool lat Is throueh alae 1 Follow steps 1 through 6 above to select the last route leg you want to plan For example ied du as de eS nner i param ui select leg 03 if you want to plan cumulative totals for the first three legs of the route select the Hold First Waypoint option from the without including the rest of the route Irip and Fuel Planning options page Then enter the last leg you want to plan in the leg field 2 Enter the speed fuel and date time values as described in steps 7 9 above 3 Press the EJ key to display the options page 4 Select the Hold First Waypoint option and press The cumulative totals from the first route waypoint to the end of the selective leg will appear at the bottom of the page 16 E The fuel and trip planning submenu also allows you to calculate the sunrise and sunset times for your present position or any waypoint for a selected date Trip and Fuel Planning cont To use the sunrise sunset planner 1 Highlight Trip amp Fuel Planning option from the main menu and press EB 2 Highlight the first waypoint field and press Ge Press the left arrow key to clear the field and use the keypad to enter the name of the desired waypoint You may leave the waypoint field blank to use your present position or press the E2 key to select the waypoint from the nearest list the waypoint list or the map display To calculate the sunrise sunset for your present position leave
90. highway perspective will move to indicate your progress to the waypoint and which direction you should steer to stay on course If you are navigating a route the Navigation Page will show each route waypoint in sequence with the active leg indicated by the white portion of the highway Nearby waypoints not in the active route will also be displayed The highway perspective scale can also be zoomed in or out to display a larger or smaller view of the highway Five settings are available from 1 4 to 4 nautical miles with a default setting of 1 4 To change the highway scale 1 Press the BS and ET zoom keys to select the desired setting Navigation Page Options The Navigation Page options menu allows you to define the navigation data fields and select what waypoints are displayed on the screen To display the Navigation Page options menu 1 Press CJ To select a menu option 1 Highlight the desired option and press EZ Navigation Page Options con t The following options are available e Change Data Fields Allows you to define the type of data that is displayed in any of the six user selectable data fields Thirteen options are available e BRG DIS e DPT e SOG e COG e STW e FTE e FTA e TMP e XTK e VMG e TRN CTS To change a data field 1 Highlight the Change Data Fields option and press 3 2 Highlight the field you want to change and press Select the desired data field option and press Gay o Configure Hi
91. hree digit name for each waypoint which can be changed at any time to an alphanu meric name containing up to six characters B Acomplete set of waypoint symbols allows you to marh inland and offshore waypoints with a cus tom symbol for fast waypoint recognition Marking a Position To mark your present position 1 Press the key The mark position page will appear with a default three digit waypoint name symbol position and depth 2 Use the keypad to highlight the waypoint name field 001 and press B 3 Press the LEFT ARROW of the keypad to clear the name field MARK POSITION poc l 4 Use the keypad to enter the name DOCK using the UP and DOWN arrows to select each letter and the RIGHT arrow key to advance to the next character position If you make a mistake and select an incorrect character simply use the LEFT arrow key of the Q keypad to backspace the cursor and correct the entry 5 Press to confirm the name 6 The field highlight will advance to the symbol field Press to access the waypoint symbol page 1 Use the keypad to highlight the ANCHOR symbol 8 Press to confirm the symbol 9 Press again to confirm the DONE prompt and save the waypoint The DOCK waypoint is now stored in memory Waypoints can also be created graphically from the map display by manually entering position coordinates or as underwater waypoints from the Sounder Page Each of these techniques i
92. ical e Depth Units Selects the format for depth contour display on G chart offshore chart hh NEN cartridges and the sounder display Depth contours and sounder depth units can be Auto displayed in feet meters or fathoms The default setting is feet A S57 B e Temp Units Lets you select between Celsius and Fahrenheit A The sounder will also display position coordinates e Heading Lets you select what reference is used in calculating heading information i l in eight grid formats You can select to reference automatic magnetic variation true north grid heading or user magnetic variation The default setting is automatic e B To enter a user magnetic variation select the To enter a user magnetic variation User Mag Var option and enter a direction and 1 Highlight the Heading field and press 9 Select the User Mag Var option and value in the variation field press Gap 2 Press to access the variation field and use the keypad to enter the desired variation Press to confirm SECTION SETUP MENUS Navigation Setup NAVIGATION SETUP POSITION FORMAT Timbalai 1948 Tokyo NAVIGATION SETUP POSITION FORMAT hddd mm mmm NAVIGATION UNITS Nautical nm kt ft Navigation Setup con t CDI Scale Provides a list of six CDI scale settings for the Map Page CDI 0 10 0 50 1 0 default 5 0 10 0 and 25 0 miles or kilometers The scale represents the distance
93. ich the unit is now calibrated for will be displayed in the calibrated range field 6 Auto calibration is complete When manual calibration mode is selected the speed calibration bar will appear as a white horizontal strip with a black slider bar Before entering the calibration you will need to compare the value shown on the speed calibration fields STW display with your boats actual speed as deter mined by the speedometer or by using a stop watch Accelerate to a safe speed and compare the two speed readings AUTO CALIBRATION INSTRUCTIONS Speed over water will be calibrated using GPS speed over ground as the basis Therefore calibration should take place in water having little or no current GPS SOG 0 0 STW CAL 00 Press ENTER to Start SECTION SOUNDER PAGE p Speed Calibration Setup SOUNDER SETUP FISH ID TARGET DEPTH On Off WATER TYPE Warm Above 80F Salt NOISE REJECTION On KEEL OFFSET FREQUENCY 0 0 200kHz SPEED CALIBRATION ST CAL W 0 0 0 A When you are ready to begin calibration read the instructions and press EDIT ENTER B When manual calibration mode is selected the speed calibration bar will appear as a white hori zontal strip with a blach slider bar positioned in the middle 3 38 SECTION SOUNDER PAGE Speed Calibration and Simulator Setup pr 7 2 OPTIONS T Sensitivity Adjust Chart Speed Adjust Auto COG 356 SETUP SIMULATOR co
94. ii E Tehsct destination 020307 151819262731______ 02040507 031424 ed SIM 6T A Whenever the sounder is in simulator mode the Setup Simulator option will appear on the option menu for each of the main pages B The setup simulator page allows you to define your speed and course over ground as well as your posi tion altitude and depth The Auto COG option will automatically steer the desired course to your destination Your speed and course can also be selected from the Navigation Page using the rocher keypad see page 13 21 Overview E POSITION PAGE E con 1 1s0G OPTIONS Change Data Fields Restore Defaults Setup Simulator 245 The trip odometer can be reset from the Position Page options menu To reset the odometer select the Reset Trip Distance option and press EDIT ENTER 22 Position Page S N cco oo E 120 is 060 M eo E rm s 120 151 Hue Data Fields 6 25m 67 g POSITION T N 3748 osition W122 24 i25 Coordinates Time TIME of Da 08 42 374 Status Bar The position page shows your position direction and speed There is a graphic compass tape at the top of the page that shows the direction you re heading you have to be moving and four selectable data fields course over ground COG speed over ground SOG distance traveled TRP and altitude ALT The bottom half of the page displays your present positions coordinates along
95. ind that whenever you do exceed the usable range of the built in database or the G chart cartridge in use the range field will display OVR ZM or NO MAP to indicate that you should exercise extreme caution using the cartogra phy data See pages 42 and 85 for more information on map scales and using G chart detailed cartography GETTING STARTED Simulator Setup BRG NE sos INO OPTIONS SETUP SIMULATOR U Maximize Map S cos Map Outlines Off Auto COG 0157 A Measure BRG DIS S06 Configure the Map fo 0 Setup Page Display POSITION Change Data Fields N 28 15 064 HO80 33 800 FF Restore Defaults ALTITUDE DEPTH gt 3 Setup Simulator 1081 57 Press MENU to see the Press GOTO to Hain Menu pase p TIRA A To enter a boat speed or define the simulated course highlight the Setup Simulator option and press EDIT ENTER B Enter a boat speed of 60 knots to begin the tour Sixty knots will allow you to complete the Getting Started tour in approximately 10 15 minutes 13 14 GETTING STARTED Reviewing and Creating Waypoints on the Map MAP POSITION o I Ne WO79 18 192 14 DEPTH 59 5 FT A Waypoints can be created from the map display by moving the cursor to the desired position and press ing the EDIT ENTER key B The create new waypoint page will automatically assign the next available three digit number as the default waypoint name If you are creating
96. ion for best performance A The TracBack feature uses your track log to cre ate a route back to where you started e If the receiver is turned off or satellite coverage is lost during your trip the TracBack will draw a straight line between any point where coverage was lost and where it sue B Once a TracBack is activated the track log is If your track log s changes in distance and direction are too complex 30 waypoints divided into segments using temporary way may not mark your path accurately The receiver then assigns the 30 waypoints to the points and an inverted route is activated back to most significant points of your track and simplifies segments with fewer changes in the oldest track log point in memory direction When a TracBack route is turned on the receiver will automatically erase any tempo rary waypoints e g TOO1 that are not contained in routes 1 20 If there are tempo rary waypoints stored in routes 1 20 the receiver will create any new temporary way A 65 points using the first three digit number available 66 SECTION ROUTES Creating a Route Graphically OPTIONS ii 001 Activate Route E m Invert Route at E Text HOSP aa 9i S Clear Route Copy Route A The route options page provides access to the sounder s route functions B Use the arrow pointer and EDIT ENTER to add waypoints to the route The create waypoint page will appear whenever you have selected a
97. is in simulator mode It allows you to define simulator speed course altitude depth and position values See the getting started tour for more details on using the simulator Map Page Data a eee cos O56 sos 20 0 Window Boat Icon Map Scale Status Bar The Map Page provides a comprehensive display of electronic cartography plotting and navigational data The map display shows your boat on a digital chart complete with geographic names navaids depth contours and other chart features It also plots your track and displays any routes and waypoints you create An on screen cursor lets you pan and scroll to other map areas determine the dis tance and bearing to a position and perform various route and waypoint functions The data window located at the top of the page provides a user selectable dis play of your current course and speed over ground along with the bearing and distance to a destination waypoint Whenever the cursor is active an additional data window will appear below to indicate the position range and bearing to the cursor or a selected waypoint or navaid Each data field may be configured to dis play any one of thirteen data options The data window can also be changed to display additional data fields a compass tape or a CDI scale The status bar at the bottom of the page displays the map scale currently in use MAP PACE SECTION Overview ees OOS O15 2 975 cos OOS soe 710 04 sere OOS nrs
98. ish Now that we re navigating to an actual destination lets move on to the next page of the sounder the Navigation Page 1 Press the E key Navigation Page Data BRG DIS Fields 153 e 24 coa Compass Tape 75e 450 Graphic Highway Pointer to n cale The Navigation Page provides graphic steering guidance to your destination The bearing BRG and distance DIS to the destination with your current course COG and speed over ground SOG are displayed at the top of the page along with a compass tape to indicate your cardinal heading The estimated time enroute ETE and velocity made good VMG or the rate you are closing in on your destination are displayed at the bottom of the page As you head toward the destination the middle section of the page gives you visual guidance to your waypoint on a graphic highway which displays the route and nearby waypoints on screen The moving arrow below the highway always points to the destination waypoint relative to the direction you re moving The line down the center of the highway represents your desired track while the bottom of the page provides a graphic indication of your crosstrack error the distance and direction you are off course according to the scale at the bottom right of the page In simulator mode you can adjust your speed and course from the Navigation Page using the keypad As you head toward each waypoint in the tour route try adjusting your boat speed a
99. isplay bees Change Data Fields To change the sensitivity setting gare es 1 From the Sounder Page press ff to access the options list Highlight Sensitivity Sounder Setup f Setup Simulator Adjust and press gp 2 The sensitivity value display field in the upper right corner of the screen will be A doo MED highlighted Use the keypad to select the desired percentage and press B A Use the sounder options page to change the Sounder Page display to fit your needs B For greater control the sensitivity amount can be adjusted from the default setting of 50 to a greater or lesser value 0 100 Sounder Page Options con t SECTION SOUNDER PAGE e Whiteline Adjust Whiteline indicates the relative hardness or softness of the bottom Whiteline Chart Speed The bottom itself is shown as a continuous black line while the whiteline shows up as Range Mode a light gray band just below The whiteline becomes thicker or thinner depending on bottom hardness A thin or absent whiteline indicates a soft bottom muddy or weedy while a thick whiteline shows a hard bottom Adjusting the whiteline lets you distinguish between strong and weak echoes which will allow you to tell the difference between a hard and soft bottom Since whiteline shows the difference between strong and weak signals adjusting the sensitivity may i require a different whiteline level The default whiteline setting is 5 Five percent Sensitivity Ade
100. ists The route number you are trying to copy to is already used Route Does Not Exist The route number you are trying to use or copy is not defined Route is Full You have attempted to add more than 30 waypoints to a route Route Memory is Full You have attempted to create more than 20 routes Route Waypoint was Deleted A route way point entered does not exist in the database and has been deleted from the route RTCM Input has Failed DGPS data being received has been lost You are no longer receiv ing the beacon signal Searching the Sky The GPSMAP 235 Sounder is searching the sky for almanac data Shallow Water Alarm The depth is equal to or less than the set alarm depth Sonar ASIC has Failed The unit s internal monitoring system indicates a malfunction Send in for service as soon as possible Sonar Transfer Timeout The sonar is inter mittently losing data Sonar is usable but should be returned for service is the message persists Stored Data was Lost All waypoints routes and almanac data has been lost due to internal battery failure There is No RTCM Input tThe beacon receiver is not properly connected or baud rates do not match Timer Has Expired The countdown timer has expired Track Memory is Full The track memory is full and no additional track plot will be recorded until the track memory has been cleared or set to wrap mode Unit Too Hot Sounder Turned Off The inter
101. k noise and turns the rejection on when it needs to When the noise disappears it turns the rejection off To set Noise Rejection 1 Highlight the Noise Rejection field and press A submenu will appear 2 Select the Noise Rejection setting and press EB Keel Offset Allows you to set the point from which the sounder will measure depth Keel offset makes it possible to measure depth from the bottom of your keel instead of from the transducer s location A positive number will measure depth from a deeper point while a negative number reflects a shallower point To set Keel Offset 1 Highlight the Keel Offset field and press ES Use the to enter the keel offset value and press E3 e Frequency Allows you to select a transducer frequency Frequency refers to the pitch of the sound that the transducer sends and receives Typically low frequencies 50 kHz provide the deepest readings High frequencies 200 kHz provide better res olution and detail The dual frequency modes of the GPSMAP 235 combine low and high frequency operation which gives you the advantages of both SOUNDER PAGE A Noise Rejection and Keel Offset Setup FISH ID TARGET DEPTH On Off WATER TYPE Warm Above 80F Salt NOISE REJECTION FREQUENCY 200kHz LIBRATION CALIBRATED RANGE 0 04 to OO FISH ID TARGET DEPTH On Off WATER TYPE Warm Above 80F Salt NOISE REJECTION On KEEL OFFSET FREQUENCY OR O
102. l appear 2 Highlight the Yes prompt and press to confirm 3 Press ERE to return to the main page sequence Congratulations You ve now gone through the basic operation of the GARMIN GPSMAP 235 Sounder Your new digital chartplotter is a powerful tool with many advanced features not covered in the Getting Started tour For detailed instructions on using these features or performing a specific task please refer to the quick refer ence guide or the appropriate reference section of this manual To turn the sounder off 1 Press the key The next section of the manual describes the pages and features of the GPSMAP 235 Sounder in detail If you are unable to locate a specific option or feature please refer to the index on pages 106 108 Status Page Status Field 3D Navigation Satellite Horizontal Accuracy Shy View Dilution of Precision Signal Strength Indicators Status Bar The Status Page provides a visual reference of various receiver functions including current satellite coverage receiver operating mode and current receiver accuracy The status information will give you an idea of what the receiver is doing at any given moment The sky view and signal strength bars give you an indication of what satel lites are visible to the receiver and whether or not they are being tracked The sig nal strength is shown on a bar graph for each satellite with the satellite number below When a satellite is visible but no
103. lectable data fields that display the bearing BRG and distance DIS to waypoint along with your current course COG and speed over ground SOG In addition there is a moving compass tape to indicate your direction Two additional data fields at the bottom of the page show the estimated time enroute ETE and velocity made good VMG to your destination The middle section of the screen provides visual guidance to the waypoint on a graphic highway display The line down the center of the highway represents your desired track while a graphic indication of the distance and direction you are off course is shown on a scale at the bottom right of the page the selected scale represents the distance from side to side The arrow pointer below the highway always points to the destination waypoint relative to the direction you are moving NAVIGATION PAGE 7 Overview DIS 0 36m SOG 10 0 The Navigation Page can be configured to show the active waypoint all route waypoints and or nearby waypoints on the graphic highway 49 50 5 NAVIGATION PAGE Overview and Options OPTIONS B Configure Highway 40 Restore Defaults Setup Simulator A To change the highway scale perspective press the IN and OUT zoom heys B The Navigation Page options menu lets you config ure the Navigation Page to your own preferences a 300 330 030 060 ROUPF JAREN TGROUPR me x id As you head toward your destination the
104. lines Off Map Outlines Off Measure BRG DIS IL gt fk To change a data field Configure the Map Configure the Map I um uu pri Displey ii Setup Pase Die ii 1 Highlight the Change Data Fields option and press Change Data Fields HE Change Data Fields jf Tm I tester Dele 2 Move the field highlight to the desired field and press EB k 7 b Setup Simulator 7a p EDIT guum N N 3 Select a data field option and press Ga Main Menu page 7 ic e Restore Defaults Resets all Map Page options except map configuration options see page 46 to the factory settings A The Change Data Fields option allows you to o Setup Simulator Allows you to define simulator speed course altitude depth define what type of data is displayed in each data and position values See the getting started tour for details on using the simulator field of the Map Page mode This completes the eight map display options Next we ll talk about the B The default option resets all Map Page options to Navigation Page the factory settings 48 H Navigation Page Compass Tape K 78 Data 168 Fields Graphic l Highway Pointer to Waypoint CDI SIM 27k Sile Whenever a GOTO MOB TracBack or route has been turned on the sounder will provide digital and graphic steering guidance to the destination with the Navigation Page The top half of the Navigation Page features four user se
105. n 42522652 emat s 37 PUTO Rants Mode su cace octets d 8 AutoLocate eau bib eS ede ed ORS ReaD 20 Backlight Timer 000 00 0 0000 78 Backi ANE aus a gdh hunvad aoe tete eos D Beara BRO pw inka Aeon Eo ate oe heey ee ate 15 Cancelling BOITE ee actuate S XA aee nes 63 CDI Scale as utar bbe ba ee apie ede ene 19 Chart Speed Adjusting 30 Clock Alarm sva das Hee e eek eee eas 81 Connecting the Power Data Cable 95 Countdown Timer ss 8l Course COG au se ese bode us ened Xx ES 15 Crosstrack Alarm 0 00 81 Crossttack Errors csse b see XE 15 OE USIOE osa wu aos te aces doe a tard 41 Cursor Using OH Map seeiis e kadaa denne LI Cursor Mode sess cra R3 40 Data Field Changing 16 Data Window gsi 44404448 G0 bd wena 10 De WME eenen au e ne R E ETETEA 79 Differential GPS DGPS 103 Display Contrat os 4 ew scope a eee eren 78 Distance DIS a oras aur ac km 3 15 Estimated Time Enroute ETE euskera 15 Estimated Time of Arrival ETA 103 E 8lTD can stresses edo tier bed prets 33 Getting El e Loses s sad edant Asp nig Hank dn 3 G Charts Installing and Removing 84 GC Hatte UED sum uesarda deen cue ERES 85 r TM T D aba Gare 103 Goines Lom Destination cese eaten ERA 12 f oJ a eas ee es Sess ee Ce S 62 GITO ODEOPS 66 a4 keda ag ha dog d Erde 63 Graphic Compass Tape od dedo eye enero 22 Grape BESDUQU
106. n only be turned on from the sounder options menu see page 31 To switch from auto to manual mode 1 Press the keypad up or down until the desired depth range is displayed on the scale at the right side of the page 2 Press to confirm the selected range or to return to auto mode To adjust manual range or switch from manual to auto mode 1 Press the keypad up or down until the desired depth range is displayed then press to confirm the selected depth 2 You can easily switch to auto mode if you press and hold the up or down until you hear a repeated beep Auto will be displayed in the function field at the top right corner of the page Press to confirm To adjust the window range any time after the unit has been put in window mode 1 Press once in any direction The window range submenu will appear 2 Enter values for the top and span fields and press When finished press ca SECTION SOUNDER PAGE 3 Range Modes A Auto mode will show the most information available while always keeping the bottom in view B The range scale will be highlighted when using the arrow keypad to adjust manual range mode or when switching between auto and manual mode 25 26 SECTION SOUNDER PAGE Zoom Feature A The 4X full display screen shows the original picture at four times the detail B For dual frequency operation in this example 200 hHz 50 kHz the bottom half of the screen
107. nd course to get a feel for how the highway works GETTING STARTED Overview BRG DIS BRG DIS Ded 1 73 02e 2 11m 011 15 0 042 15 0 Ec SIM 50 554 47 x A In this example our boat is off course to the left by about 1 8th of a mile the base of the highway map is equal to the scale selected at the bottom right of the page To get bach on course steer right B In this example our boat is off course to the right To get bach on course steer left A digital readout of your exact crosstrach error can be displayed in any of the six data fields see page 47 15 16 GETTING STARTED a Using the Navigation Page OPTIONS Change Data Fields nm Configure Highway 40 Restore Defaults Setup Simulator Auto COG A To reset the simulator to steer the desired course automatically select the Auto COG setting from the options menu B The highway scale can be set to a 1 4 1 2 1 2 or 4 nm mi km range with the ZOOM keys Navigation Page con t To adjust the simulated boat speed 1 Press the UP arrow of the keypad to increase the speed in 5 knot kph mph incre ments Press the DOWN arrow to decrease the speed in the same increments To steer the boat 1 Press the LEFT or RIGHT arrows of the keypad Notice that as you get off course the highway and waypoint pointer move to give you graphic guidance to get back on course The scale in the lower righ
108. nds Sapper Hill 1943 East Falkland Island Schwarzeck Namibia S American 69 Argentina Bolivia Brazil Chile Colombia Ecuador Guyana Paraguay Peru Venezuela Trin Tobago South Asia Singapore Southeast Base Porto Santo and Madiera Islands Southwest Base Faial Graciosa Pico 5ao Jorge and Terceira Islands Timbalai 1948 Brunei and E Malaysia Sarawak and Sabah Tokyo Japan Korea Okinawa Tristan Astro 1968 Tristan da Cunha Viti Levu 1916 Viti Levu Fiji Islands Wake Eniwetok Marshall World Geodetic System 72 World Geodetic System 84 Zanderij Surinam Almanac Data The satellite constellation information including location and health of satellites that is transmitted to your receiver from every GPS satellite Almanac data must be acquired before GPS navigation can begin APPENDIX Bearing BRG The compass direction from your position to a destination Glossary Course Over Ground COG Direction of movement relative to a ground position Crosstrack Error XTK The distance you are off a desired course in either direction Desired Track DTK The compass course between the from and to waypoints Differential GPS DGPS An extension of the GPS system that uses land based radio beacons to trans mit position corrections to GPS receivers Estimated Time of Arrival ETA The time of day of your arrival at a destination Estimated Time Enroute ETE The time remaining to your destination at
109. nfor mation described on page 3 Using the Map Cursor The cursor is an important tool that can be used to pan to other map locations mark and edit waypoints and routes and review position data of on screen navaids and waypoints To get a feel for using the Map Page and cursor try the following exercise 1 Use the key to set the map scale to the 64 nm setting Your boat should be near the center of the map 2 Use the DOWN arrow of the keypad to move the cursor down to the first lat lon grid south of your boat s position 3 Using the keypad to move the cursor try following the outline of the lat lon grid clos est to your boat Notice how another data field appears at the top of the page showing the bearing and distance from your boat to the cursor along with the lat lon of the cur Sor 4 Press the key to remove the cursor and recenter your boat on the map display As you become more familiar with the cursor you ll see that the map display actively scrolls or pans letting you explore areas in and outside of your current G chart coverage and create waypoints and routes Wherever you move the cur sor you ll always be just one keystroke away from returning the map to your pre sent position by pressing EB Now that you have a feel for how the cursor works lets move on and see how the sounder works on the water To help you practice using the Map Page and other features we ve stored a practice route in the receiver
110. nt down from a specified interval or provide a running count of elapsed time B The sounder alarms can be set to warn you of deep or shallow water and sounder targets of various sizes 81 Input Output Submenu SECTION SETUP MENUS The Input Output submenu lets you control interface settings for connecting external NMEA devices a DGPS receiver or a personal computer The Input Output Format field at the top of the page lets you specify one of seven interface formats Input Output Setup eData Transfer A proprietary interface that allows you to exchange data such as way points routes and track logs between GPSMAP units or a GARMIN PC kit eNo In NMEA Out Provides navigation information to a compatible NMEA device INPUT OUTPUT INPUT OUTPUT such as an autopilot or radar NMEA 0180 0182 0183 v 1 5 and 0183 v 2 0 output INPUT OUTPUT FORMAT INPUT OUTPUT FORMAT Data Transfer options are available See Appendix A for additional NMEA sentence information TRANSFER MODE Data Transfer i egi NMEA In NMEA Out No In No Out Provides no interfacing capabilities Sey AT pea ha eRTCM In NMEA Out Allows DGPS beacon receiver input and also provides selec Request Proximity table NMEA output Ja iod ji eRTCM In No Out Allows DGPS beacon receiver input with no output capabilities ary NMEA In No Out Allows input from a NMEA compatible external device such as a Yeoman Plotter with no output capabilities N
111. nts Road Labels Waypoints Wil Calibrate the Map Waypt Names Wil Set Map Colors S s Restore Defaults To configure the map Press MENU he Tr l T epe FE 1 Highlight Configure the Map and press The map configuration page will Road Labels Road Labels TERA a ppea r Orientation Horth Up Orientation Horth Up SIM 5T 2 Use the keypad to select the desired map item and press Gua A pop up window will appear with the current settings displayed A The map configuration grid allows you to define 3 Use the keypad to highlight the scale you want to change what items appear on the display at each map scale 3 Brace to turn the setting on or off B To turn an entire row on for the selected map item 5 Press ESI to finish highlight the Enable Row option and press GBB ME als dd The map configuration page also allows you to set the map display to a North Up Track Up or Desired Track Up orientation To change the map orientation 1 Use the keypad to highlight the Orientation field and press E3 2 Select the desired setting and press EZ Map Page Options con t From the map configuration page you can also access another options menu by highlighting any of the items and pressing EB There are five options eFnable or Disable a Row Allows you to turn an entire row on or off To turn an entire row on or off 1 Use the keypad to select the desired map item 2 Press the E key 3 Select the
112. nts to your present position To select a nearest waypoint as a GOTO destination 1 Highlight the Show Nearest Waypoints option and press E3 2 Select the desired waypoint and press E3 Select Route Allows you to quickly select a stored route for navigation To select a route to navigate 1 Highlight the Select Route option and press B 2 Select the desired route and press B e Cancel GOTO Cancels the current GOTO destination and resumes navigation of any previously selected route GOTO MOB GOTO Options OPTIONS Start TracBack Show Nearest Wpts Select Route Cancel Go To A The GOTO options page lets you start a TracBack route select a destination from the nearest list select a route to activate or cancel the current GOTO destination B The nearest waypoints list limits the list to pro vide quick access to nearby anchorages facilities SECTION 9 pis 447 STUMP4 TOUR2 TOURI FUEL amp FISH 6 c FISH 2 c 006 o 005 etc which are stored as waypoints 63 SECTION GOTO MOB MOB and TracBack Navigation Bre 165 ors BO TRACK cos 165 S06 30 0 INTERYAL Resolution MAN OVERBOARD INTERVAL VALUE Store and begin navigation to TOTAL MEMORY USED 1 D t MOB waypoint Are YouSure ie Start TracBack ES NO E A The sounder s MOB feature can be used to set a course to a passing spot when a quich response to emergency situations fish strih
113. or specific instructions e Clear Route Allows you to clear all waypoints from the selected route e Copy Route Allows you to copy the waypoints of the active route to another The Change Data Fields option lets you specify Ld what information is displayed for each route way e Change Data Fields Allows you to define the data displayed in the distance and point Four data options are available distance ETE fields Four data options are available desired track and ETA or ETE to each route way e DIS distance to active wpt e DTK desired track Bum ETE estimated time enroute ETA estimated time of arrival e Restore Defaults Resets all active route page options to the factory settings Deactivate Route Stops navigation of the route you are currently navigating e Setup Simulator Allows you to define speed course and position values while in simulator mode E 73 Track Log Submenu SECTION ROUTES The track log submenu lets you specify whether to record a track plot an elec tronic recording of your path and define how it is recorded It also provides an Track Log Setup indicator of the amount of track memory used and selects functions to clear the track memory and start a TracBack route The following functions are available Record Mode Lets you select one of three track recording options Off No track log will be recorded Selecting Off will prevent you from using the TracBack feature e
114. ot seeing certain map items navaids depth contours etc on offshore cartridges highways boat ramps etc on inland cartridges check the map configuration settings available from the map options page SECTION G CHARTS Using G Charts BRE BG 515 1036n ees 248s vis 384 cos Qe sos 20 0 cos 003 sos 20 03 eio 00 MIAMI Nassau na Pere RARE Y 24 00 00 Ahr AAV AT 1 dex t UBA e iN OO JE ii umm SIM 50 1024 A Map outlines for G chart offshore cartography B Map outlines for G chart inland cartography 85 SECTION LORAN TDs I y4 LORAN C Basics he TT 1 UM 789630 4M sio p ipsi NL o hant E ux E r 7 E aa 10 o Xo 96012 y VS TO ped PM i x Y As omm uA B B Zee CURT ML m exo mA ko X IR v Tux PR i LORAN Chains located across the continental U S 06 LORAN C Basics LORAN C is a radio navigation aid operated and maintained in the United States by the Untied States Coast Guard The name LORAN is an acronym for Long Range Navigation The LORAN system covers the entire United States and the U S Coastal Confluence Zone From the perspective of a mariner the system is used for ocean and coastal navigation It can be used as a supplemental system for harbor and harbor approach navigation and it is used for inland navigation by recreational vehicles The LORAN C system is also used in civil aviation The LORAN system consists of groups of land based
115. ou can see the coverage outlines If you do not immediately see the outlines scroll the cursor to the broad geographic area covered by the chart and zoom out to another map scale The large outlined box shown is the main chart which serves as the boundary area for the entire cartridge The small outlined boxes inside the main box are sub charts which provide more detailed coverage of the area indicated To view the detailed cartography of any subchart scroll the cursor to the subchart outline and use the Em and ME keys to zoom to smaller range scales If the map outlines still do not appear check the Map Outlines setting on the map options page to make sure they are set to appear see page 43 N Whenever you zoom past the usable range of the current electronic chart the range field will display Ovr Zm or No Map These warnings indicate that although you may still have cartography you should exercise extreme caution using the data See page 42 for more information on Overzoom and No Map modes When a G chart cartridge is installed the sounder will automatically use the best available chart for display As you enter and exit various subcharts the system will automatically display the appropriate chart for the area you are in When you leave the area covered by the main map of a cartridge the sounder will default back to using the built in 64 nm database 32 nm in U S if it is available at the current scale If you are n
116. ourse distance specified in the CDI setup Data Transfer is Complete The receiver is fin ished uploading or downloading information to the connected device Database Memory has Failed The built in 64 nm 32 in U S database has failed See an autho rized service center for repair Deep Water Alarm The current depth is equal to or more than the set alarm depth Degraded Accuracy The accuracy of your GPSMAP 235 Sounder system has been degraded beyond 500 meters due to poor satellite geometry J or data quality Max Calibration Is 5000mt 16 400 ft You have exceeded the maximum possible map cali bration Memory Battery Power is Low The internal battery that stores waypoints routes and track plots needs to be replaced Take your unit to an authorized GARMIN service center for installation of a new battery Need Altitude Your GPSMAP 235 Sounder sys tem needs the altitude to maintain a position fix due to poor satellite coverage Enter your approx imate altitude on the initialize Position Page Need to Select Init Method The GPSMAP 235 Sounder needs to be initialized to your present position See pages 1 2 for complete instructions on initialization No Differential GPS Position Not enough data is being received to compute a DGPS posi tion No Transducer Sounder Turned Off The unit has detected that its transducer has been removed and has shut the sounder off GPS is still functional Oscillator
117. pad is pressed the sounder will enter cursor mode In the cursor mode The cursor can be moved around the map display using the keypad Whenever the cursor reaches the edge of the display the map will scroll forward under the cursor Keep in mind that the boat symbol will move with the map scrolling and may go off the display screen you may not be able to see your present position When the cursor is stationary a fixed coordinate position will appear in the position field Note that the distance and bearing will change as the boats position changes Whenever you zoom in cursor mode the cursor will be centered on screen To return to position mode press the key Using the Cursor The cursor allows you to pan away from your present position and scroll to other map areas even outside of your current G chart coverage As you pan past the edge of the current map display the screen will actively scroll forward to pro vide continuous map coverage To move the cursor 1 Press the keypad to move the cursor up down left or right As you move the cursor the distance and bearing from your present position to the cursor will be displayed in the data window along with the cursors position coordinates Keep in mind that when the cursor is stationary the distance and bearing from your present position will change as your boat moves The cursor can also be used to snap to on screen waypoints and navaids allowing you to r
118. position that is not already stored as a waypoint Routes The last way to navigate to a destination is to create a user defined route The sounder lets you create and store up to 20 reversible routes numbered 1 20 with up to 30 waypoints each Routes can be created and modified right from the Map Page allowing you to see each route graphically on screen as you create review modify or navigate the route All of the route features are accessed through the main menu To create a route graphically 1 Press the C key twice to display the main menu page 2 Highlight the Routes field and press 3 The routes page will appear showing all the routes currently stored in memory 3 Press the EZB key to display the route options page 4 Press to select the Create New Route option The route edit page will appear with the cursor displayed as an arrow pointer and will allow you to select your route waypoints using one of two methods 5 To add an existing waypoint or navaid to the route use the arrow pointer to highlight the desired waypoint on screen and press EB 6 To add a new waypoint to the route use the arrow pointer to select the desired map position and press Press again to confirm the new waypoint As you add each new waypoint to the route the data window at the top of the map display will show the route number you are creating along with the first and last route waypoints of the route A route line will appear
119. ptions to the factory default settings and define speed course and posi tion values while in simulator mode To view the system setup page options 1 Press the GEMM key B Keeping the backlight timeout at the lowest acceptable setting will lengthen the useful life of the backlight To restore the default settings 1 Highlight the Restore Defaults option and press B 18 E Navigation Setup The navigation setup submenu is used to select a variety of navigation informa SETUP MENUS tion including position format units of measure and heading references This submenu is also used to select map datums set the CDI scale and adjust the built Navigation Setup in velocity filter The following options are available SECTION e Position Format Lets you select the coordinate system used to display position The following formats are available hddd ddddd degrees e hddd mm mmm degrees and minutes e hddd mm ss s deg min sec British grid NAVIGATION SETUP NAVIGATION SETUP i German grid i Irish grid POSITION FORMAT POSITION FORMAT Maidenhead Swedish grid ree hddd mm mmm i of NAVIGATION UNITS e Swiss grid e Taiwan grid TUTUP Nautical nm kt ft DEPTH UHITS TEMP UNITS UTM UPS grid LORAN TDs Feet F HEADING e Navigation Units Selects the format for speed and distance measurements You may select from nautical statute or metric formats The default setting is naut
120. r nan ER DATE 18 JUN ser 07 02 selectthe destination waypoint 5 Enter a speed for your trip in the speed field or press E to select your current SOG for the speed value A To perform point to point planning enter a TO 6 Enter an hourly fuel flow if desired in the fuel field and press Gg and FROM waypoint or leave the field blank if 7 Enter the date and time of your departure the default date and time will be the current you want to use your present position date and time in UTC or local time whichever you have selected and press Gz d pennies a B Enter a date and time for your departure The The bottom of the page will now display the desired track and distance between sunrise sunset and ETA at the TO waypoint will the two points the estimated time enroute and fuel required the date and time of be displayed at the bottom of the page arrival and the sunrise and sunset times at the destination for the date of arrival The route planning mode lets you calculate the same planning information for any route stored in memory in leg or cumulative leg or route totals Trip and Fuel Planning con t SECTION ROUTES To use the route planning mode Q Route and Trip Planning 1 Highlight the Trip amp Fuel Planning option from the main menu and press EB 2 If the plan field is not set to Route press ERB and select it from the options page 3 Highlight the route number field and press B 4
121. r The customer is however responsible for any transportation costs This warranty does not cover fail ures due to abuse misuse accident or unauthorized alteration or repairs THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCULSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXPRESSED IMPLIED OR STATU TORY INCLUDING ANY LIABILITY ARISING UNDER WARRANTY OF MER CHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE STATUTORY OR OTHTERWISE THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS WHICH MAY VARY FROM STATE TO STATE IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL SPE CIAL INDIRECT OR CONSEQUENTIAL DAMAGES WHETHER RESULTING FROM THE USE MISUSE OR INABILITY TO USE MISUSE OR INABILITY TO USE THIS PRODUCT OR FROM DEFECTS IN THE PRODUCT SOME STATES DO NOT ALLOW THE EXCLUSION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU To obtain warranty service call the GARMIN Customer Service Department 913 397 8200 for a returned merchandise tracking number The unit should be securely packaged with the tracking number clearly marked on the outside of the package and sent freight prepaid and insured to a GARMIN warranty service station A copy of the original sales receipt is required as the proof of purchase for warranty repairs GARMIN retains the exclusive right to repair or replace the unit or software at its sole discretion SUCH REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF WARRAN
122. re sponding submenu will appear 2 Highlight your submenu selection and press B Water Type Maximizes the sounder s operation in cold cool or warm water salt SPEED CALIBRATION or fresh One field is for water temperature and one is for water composition Set Auto Calibrate the water temperature option to Cold if the water is below 40 F Cool if it is 00 a tw OO between 40 80 F and Warm if it is above 80 F Set the water composition field to salt or freshwater depending on where you are fishing To select water temperature or composition A The digital depth of each fish symbol will be displayed when target depth is turned on 1 Use the keypad to select the temperature or water composition field and press A corresponding submenu will appear B There are three water temperature options 2 Highlight your submenu selection and press EB 34 A Sounder Setup Page con t o Noise Rejection Removes cross talk from other sounders or ignition noise from poor boat motor installations non shielded plugs etc There are three options e Off The unit will not remove anything it thinks is cross talk noise The noise will be displayed on the screen e On The unit will always remove anything it thinks is cross talk noise and attempt to repair the damage done by suspected interference with real echoes e Auto Auto is the default setting Auto identifies the presence of cross tal
123. rea being displayed The status bar at the bottom of the page displays satellite signal status digital depth and any triggered alarms More on the Sounder Page may be found on pages 24 38 GETTING STARTED Sounder Page o k V 4 Nan SIM 0 28 EIA A When adjusted correctly the bottom is outlined by the whiteline To adjust the whiteline see page 30 B Pause the screen by pressing the EDITIENTER key at any time To continue screen movement press EDIT ENTER again Pause the screen to allow more time to examine the screen display and when using the underwater waypoint fea ture Range Modes GETTING STARTED The unit uses three range modes on the Sounder Page auto manual and win dow Auto mode displays the most information possible while continuously showing the bottom Manual mode lets you select the displayed depth Window mode allows you to define a starting depth and length of the range window but must be started from the sounder options menu see page 31 Range Modes To switch from auto to manual mode 1 Press the keypad up or down until the desired depth range is displayed on the depth scale at the right side of the page Press to confirm the selected A CREATE NEW WAYPOINT range 001 To ew o switch from manual to auto mode N 39 00 32 5 r WOS5 00 00 0 1 Press the up or down and hold it until you hear a repeated beep Auto will be displayed in the function fiel
124. rn clockwise to lock the cable into place Mounting the Sounder The units waterproof case is suitable for mounting in exposed locations or at the nav station The unit comes with a gimbal bracket that can be used for surface or overhead mounting When choosing a location for the unit make sure you consider the following conditions There should be at least a 3 7 7 cm clearance behind the case to allow room for con necting the antenna power data cables and ferrite clamp The unit should not be mounted where it is exposed to excessive temperatures for extend ed periods of time see page 95 The mounting surface should be heavy enough to support the unit and protect it from excessive vibration and shock To surface mount the sounder 1 Place the mounting bracket in the desired location 2 Mark and drill the four mounting holes for the fastener you are using 3 Fasten the mounting bracket to the surface using the appropriate fasteners not included 4 Insert the unit into the mounting bracket The mount is designed for a tight fit to provide additional support when swiveling the unit 5 Screw the two mounting knobs into the mounting bracket 6 Connect the power data antenna and transducer cables to the back of the unit making sure the locking rings are tightened on all connectors APPENDIX A Installation i The mounting brachet can be rotated allowing the unit to be mounted overhead or on a vertical surfa
125. rom a list of waypoints press GOTO once B Press GOTO twice to select a destination waypoint using the map cursor If you are not selecting an existing waypoint as your destination a new way point named MAP will be created Keep in mind that the MAP waypoint will be overwritten for each MAP GOTO Overwriting allows you to navigate to on screen navaids without permanently storing the navaid as a waypoint If you want to save the MAP waypoint rename it following the steps on page 58 H Navigation Methods The sounder provides four methods of navigation GOTO MOB TracBack and Route GOTO The sounder allows you to create a simple route consisting of your current posi tion and selection of a single destination waypoint from the waypoint list Any waypoint on the list can be selected as the destination Pressing the key once shows a list of all waypoints in memory from which to choose To turn on GOTO navigation from the waypoint list 1 Press the key Select a waypoint and press The sounder sets a direct line course from your present position to the selected destination Selecting a GOTO Graphically Pressing the key twice allows you to graphically select an on screen way point navaid or cursor position as the destination If you are selecting a navaid or a new position as the GOTO destination the sounder will automatically create or move the waypoint named MAP at the navaid or map position To turn on a
126. s Whiteline Adjust a Set Range Mode JO 0 Setup Page Display E indi POSITION Change Data Fields z N 39 00 000 Restore Defaults 12 H095 00 000 Sounder Setup ALTITUDE DEPTH Setup Simulator 1081 57 e Press MENU to see the Press GOTO to Sd Main Menu page select destination dmn FA 97 A The Setup Simulator option is included in the options menu for each of the five main pages when in simulator mode B Each simulator data field may be modified to display user selected values and navigational information Sounder Setup Page con t To use manual calibration 1 Ensure manual calibration mode is selected in the speed calibration field If not press CER highlight Manual Calibrate and press BA 2 Press Ge The slider bar will turn black and the calibration range bar will turn white 3 Use the keypad to move the selector bar until the speed displayed in the STW field matches the speed of your boat Move the bar to the left for negative values and right for positive values 4 When the desired speed is displayed press 5 Press to return to the Sounder Page Two options can be accessed from the sounder setup options menu Manual or Auto Calibration whichever one currently is not selected and Restore Defaults Access the options menu by pressing E select an option and press RB e Setup Simulator The setup simulator option will appear only when the unit
127. s described in the reference section of the manual or in the quick reference guide To continue our tour lets move on to the Sounder Page 1 Press the EE key to access the Sounder Page Sounder Page Data Field amp Range Mode Fish Arch Thermocline Whiteline Tal ri m PT NES h vul XU LEAT aS SIM o 46 EUN Transducer Frequency The Sounder Page lets you use the GPSMAP 235 as a fishfinder The top of the screen contains any of seven selectable data field options while the middle of the page contains a right to left moving sonar image of the water beneath your boat Note Items appear on the screen as they pass under your transducer Those objects appearing on the right side of the screen are closer to you than those on the left Fish are displayed as a darkened arch or a fish symbol in three different sizes Thermoclines layers of water separating warmer water from cooler water are shown as shades of gray The area of strongest sonar return or whiteline is displayed as a light gray band Typically the bottom will be the primary source of the whiteline A thin whiteline indicates a softer bottom while a thick whiteline shows a harder bottom A black line is used to show the point where water meets the whiteline This black line will follow the bottom contour along with any significant objects lying on the bottom Along the right side of the screen is an adjustable scale which reflects the depth of the a
128. s and comments available for each waypoint Waypoints can be created using one of the following methods Mark Key Although used primarily for marking your present position the key also provides options that allow you to select a map or navaid position from the map display e Graphically Allows you to define a new waypoint position from the map or Sounder Page using the cursor o Text Entry Allows you to enter a new waypoints position coordinates manually from a chart etc or by referencing its bearing and distance from a stored waypoint or your present position Mark Key The key lets you quickly capture your present position cursor or navaid position in order to create a new waypoint You must have a valid position fix to mark your present position To mark your present position 1 Press the key The mark position page will appear with a default three digit name for the new waypoint 2 To accept the waypoint with the default name symbol and comment the depth at the waypoint s position press to confirm the Done prompt 3 o enter a different name symbol or comment highlight the appropriate field and press the key 4 After entering and confirming your changes move the field highlight back to the Done prompt and press Gay WAYPOINTS SECTION Creating Waypoints and the MARK Key MARK POSITION 010 N 38 N 38 251 340 ik W094 47 969 W094 4 DEPTH 15 5 FT DEPTH 1104 Append To Route
129. s for maximum depth read ings with good bottom detail and resolution When the split screen is displayed the bottom frequency in this case 50 kHz is always shown on the bottom screen e 50 200 kHz For viewing versatility select 50 200 kHz which will allow you to view the 200 kHz setting in the bottom screen To select a transducer frequency 1 Highlight the Frequency field and press Gz Use the to select a frequency and press EB e Speed Calibration If you are using a transducer capable of displaying speed through water STW calibration is required to ensure that the STW displayed by the sounder will be accurate The unit can be calibrated automatically or manually but auto calibration is recommended the default setting To calibrate the unit 1 Press GES to display the sounder options page 2 Using the keypad highlight Sounder Setup and press E3 3 Choose between auto and manual calibration COG field Sounder Setup Page con t To use Auto Calibration 1 Ensure Auto Calibrate is displayed in the speed calibration field If it is not press CE to display the calibration menu 2 Highlight Auto Calibrate and press Gay 3 Press again and an instruction message will appear 4 Read the instructions and press when you are ready to begin calibration 5 Slowly accelerate your boat to a maximum safe cruising speed and then back down to a stop and press ES The minimum and maximum speed wh
130. s memory so that you can see exactly what you ll experience when you re navigating with your new GPS chartplotter GETTING STARTED Map Cursor pres QG75 OS 83 cos 003 s 0 0 COVE N 25 48 288 025 6 58 H082 10 593 ava m A Whenever the cursor is active the bearing and distance of the cursor from your present position will appear in a pop up data window To remove the cursor and re center your vessel on the map press the QUIT key B To select an on screen waypoint simply move the cursor over the desired waypoint The waypoint navaid name and position along with the bearing and distance from your present posi tion will be displayed Underwater waypoints are also shown on the map 11 Going to a Destination GETTING STARTED GPS is all about marking positions as waypoints and navigating to them using the receivers steering guidance and map displays We ve already seen how to use Using the GOTO Feature the key to store our present position so its time to move on to the fun part H going to a destination The key located on the left side of the keypad above the key is the primary tool used to select a destination waypoint or a route to navigate The key can be used in three primary ways Pressing once displays a list of all waypoints in memory from which you can select a single destination waypoint Pressing followed by the GE key provides a list of GOTO options cilia that lets you start a TracBack route
131. shows the original picture at the original viewing depth at the bottom frequency 50 kHz Zoom Feature The zoom feature allows you to view a smaller portion of the complete range in greater detail The zoom feature operates in auto or manual mode Auto zoom will follow the bottom contour while manual zoom will display the selected depth For more on the zoom feature see pages 26 27 To use the zoom feature 1 While viewing the Sounder Page press IBI The zoomed part of the display always the bottom part shows you twice the detail of the original display at half the depth 2 Pressing I a second time shows you twice the detail of the original at half the depth in one screen 3 Pressing a third time shows you four times the detail in the zoomed part of the screen at a quarter of the original depth 4 Pressing BB a fourth time shows you four times the detail in the zoomed part of the screen at a quarter of the original depth in one screen Note When dual frequency is selected there is no split zoom with a full range over a zoomed window Both the 50 kHz and the 200 kHz will zoom together regardless of which is on top or bottom To turn the zoom feature off press until the original scale picture appears and a triple beep sounds Zoom Window Depth Scale Once a zoom window is displayed its depth scale can be adjusted A hollow indicator bar is displayed to the left of the depth scale on the original picture top half of
132. sition Page The Position Page shows your position direction of travel and speed The compass tape at the top of the page indicates the direction you re moving The four user selectable data fields below the compass tape show your current course and speed over ground along with a resettable trip odometer and depth display Your current latitude and longitude along with a 12 24 hour clock appear at the bottom of the page Now that you ve seen how the status and position pages can be used to monitor satellite acquisition and your present position lets take a minute to learn how to mark and store our present position as a waypoint Since we re in simulator mode the present position displayed will be the last position calculated by the receiver which should be the spot where you initialized the unit Marking a position will also give you an opportunity to see how the sounders arrow keypad and key are used for data entry GETTING STARTED Page Sequence Position Page i Compass ape Data Fields N 35 53 988 Position WOO99 45 333 Coordinates Time es of Day 02 49 48 Status Bar GETTING STARTED d Marking a Position sea NONAS pis MARK POSITION MARK POSITION WAYPOINT SYMBOL Dot N 26 41 249 f WOB149 397 f nsus DEPTH 63 1 FT Append To Route Use Map Posn Done JITE PORT MYERS mI A ISIM 65 E SIM B5 A The mark position page will automatically assign a default t
133. sly Sensitivity Adjust Chart Speed Adjust B Any of thirteen information options may be Mira uni shown in a designated data field Setup Page Display Change Data Fields Restore Defaults Sounder Setup Setup Simulator um Press MENU to see the L00 ae Main Menu page ie TE 32 A Sounder Setup Page SECTION The next Sounder Page menu option is Sounder Setup which accesses the SOUNDER PAGE Fish ID Setup sounder setup page There are eight fields on the sounder setup page which allow you to customize the sounder s features Fish ID Target Depth Water Temperature Water Type Noise Rejection Keel Offset Frequency and Speed Calibration To access the sounder setup page 1 From the Sounder Page press Ej to access the options list Highlight the Sounder Setup option and press EB SOUNDER SETUP Manual FISH ID TARGET DEPTH BRE 1297 os 128 e Fish ID The Fish ID determines how the GPSMAP 235 Sounder identifies and Off zs 356 s OO labels sonar targets on the viewing screen On Fresh The On and Fish Only settings display fish symbols on the screen in place of Fish Only actual target echoes There are three fish symbol sizes small medium and large 00 These are used to point out the relative size between targets In other words the SPEED CALIBRATION sounder displays a small fish symbol when it thinks a target is a small fish a medi laka LAA um fish symbol on
134. st E typically provides the best picture under current conditions For more control you Chart Speed Adjust Whiteline Adivst UN can add or subtract the amount of whiteline as described in the steps below As with mes jul s TOTEM sensitivity experiment with whiteline to find the setting that s best for your condi m etup l age Vispiay Bic Change Data Fields peru S Pa pones Restore Defaults ONT oli Sounder Setup i opua To change the whiteline setting Setup Simulator 1 From the Sounder Page press E to access the options list Highlight Whiteline Adjust and press E3 2 The whiteline value display field in the upper right corner of the screen will be highlighted Use the keypad to select the desired percentage and press Gy A The whiteline value is changed from the options menu which is accessed from the Sounder Page e Chart Speed Adjust Chart speed is the rate at which echoes scroll across the screen B Chart speed is adjustable from 10 to 100 in To change the chart speed increments of ten EE 1 From the Sounder Page press E to access the options list Highlight Chart Speed Adjust and press B 2 The chart speed display field in the upper right corner of the screen will be high lighted Use the keypad to select the desired value and press Ga o Set Range Mode Allows you to select auto manual or window range modes 30 Sounder Page Options con t Auto is
135. st points of safety in emergency situations To scroll through and review the nearest waypoint list 1 Highlight the Nearest Waypoints option and press Gua 2 Use the keypad to scroll through the list in either direction 3 Press to review the highlighted waypoint 4 To return to the waypoint list highlight the Done prompt and press 3 5 The field highlight will automatically scroll to the next waypoint If you want to review each waypoint you can scroll through any waypoint list by pressing the key repeatedly To select a nearest waypoint as a GOTO destination 1 Use the key to select the desired GOTO waypoint 2 Press E followed by EJ WAYPOINTS SEGIION Nearest Waypoints and GOTO Navigation MAIN MENU NEAREST WAYPOINTS Nearest Waypoints WAYPOINT Proximity Waypoints Create Waypoint BUOY 173 Waypoints STUMP4 1793 aa TOUR 3 178 Track TOUR2 478 TOURI 179 Trip amp Fuel Planning FUEL amp 179 Sym T FISH 6 479 Navigation Setup FISH 2 lt 179 Timers amp Alarms 006 o 479 Input Output SIM 97 A The main menu page features four waypoint submenus B The nearest waypoint list continuously updates to show the nine nearest waypoints to your present position 59 SECTION WAYPOINTS i r Proximity Waypoints PROXIMITY WAYPOINTS PROXIMITY WAYPOINTS WAYPOINT DIS WAYPOINT DIS COVE i 4 00 COVE i 1 00 FISH 2 0 40 CLEAR AL
136. t being tracked the strength bar will not be shown and the sky view indicator will not be highlighted The sky view shows a birds eye view of the position of each satellite relative to the receivers last known position The outer circle represents the horizon track up the inner circle 45 above the horizon and the center point a position directly overhead Use the sky view to determine if there are obstructions shading your reception of GPS signals STATUS PAGE 1 Overview Acquiring Satellites Acquiring Satellites oriog GN e B e 20 31 A 02071519252 31 A Whenever the sounder is searching for satellites no signal strength bars will appear B Once the receiver has found the satellite s indicated a hollow signal strength bar will appear After satel lite data has been collected the signal strength bars will become solid 19 Receiver Status EPE and DOP SECTION STATUS PAGE Receiver status is displayed at the top of the page with the current estimated position error EPE and dilution of precision DOP to the left of the sky view Receiver Status DOP is an indication of satellite geometry quality measured on a scale of one to j ten lowest numbers the best highest numbers the poorest EPE uses DOP and other factors to calculate a horizontal position error in feet or meters The status field will show one of the following conditions Searching the Sky The receiver is looking for satelli
137. t by manually entering its coordinates 1 Press GB twice to display the main menu page 2 Highlight the Create Waypoint option and press ES The waypoint definition page will appear with the next available waypoint number and the receiver s last known position as the default name and position 3 Use the keypad to enter the new waypoint name symbol position and comment Press after the last character in each section 4 When you have finished entering all your waypoint data use the keypad to highlight the Done prompt and press WAYPOINTS Creating Waypoints Graphically and by Text mo CREATE NEW WAYPOINT RAMP e MAP POSITION N 26 42 554 W089 33 546 GOOD PARKING SECTION WAYPOINT cov b N 28 42 553 W089 33 923 DEPTH 73 3 FT REF WPT ere 000 pis 0 00 Done 73 A Once a position has been selected graphically the create new waypoint page will appear where you can change the waypoint name symbol or com ment before saving the waypoint B To create a waypoint by text entry start by entering the new waypoint s name 99 Reference Waypoints A new waypoint can also be created by entering an existing waypoints range SECTION r WAYPOINTS and bearing or the range and bearing from your present position The sounder Reference Waypoints will then calculate the position coordinates for you using the reference selected WAYPOINT 001 N_38
138. t cor ner of the page represents the total distance or the width of the base of the high way display The default graphic highway setting is 1 4 nm but can be set for a 2 1 2 or 4 nm range To change the highway scale display 1 Press the or KB key in either direction up to increase down to decrease the scale The Navigation Page data fields can also be configured to display any of eight different navigation information categories Lets change the ETE field to ETA esti mated time of arrival To change a data field 1 Press the key to display the position page options 2 Highlight the Change Data Fields option and press X9 The field highlight will now appear in the top left data field the COG field 3 Use the keypad to move the field highlight to the ETE field and press ES Highlight the ETA option and press ES and press to finish Now that you ve seen the five main pages lets look at the active route page which appears in the main page sequence whenever you are navigating a route 1 Press EC Active Route Page The active route page shows each waypoint of the active route in sequence GETTING STARTED with the waypoint name distance and estimated time enroute to each waypoint displayed As you navigate the route the active route list will be automatically Active Route Page updated indicating the next destination waypoint The active route page also pro vides quick access to many rou
139. te activation editing and copying functions you ll use most often like inverting and deactivating the active route Lets go ahead and deactivate the active route OPTIONS Route cos MY Activate Route n As a Edit On Map Auto 234 Clear Route i Copy Route Wo at Change Data Fields N 37 48 712 Restore Defaults H122 24 160 Deactivate Route i ALTITUDE DEPTH Setup Simulator l 1076 57 Press MENU to see the Press GOTO to Main Menu page select destination To deactivate the active route and stop navigation 1 Press the CE key 2 Highlight the Deactivate Route option 3 Press to confirm To reset the boat speed to zero 1 Press the RJ key 2 Highlight the Setup Simulator option 3 Press EB 4 Press to access the SOG field 5 Press the LEFT arrow of the keypad to clear the speed entry 6 Press EB As you ve seen the primary pages provide status position fishfinding naviga tion and map information The tours last page is the main menu page which allows access to the sounders waypoint route and planning functions as well as various operational and navigation setup features The main menu is available from any page and is accessed through the GE key n sn es eel ee ee es eel ee a a t A SIM 76 SIM 78 A To stop navigating the active route select the Deactivate Route option and press EDIT ENTER
140. tes 3D Navigation 3D Navigation e AutoLocate The receiver is is looking for any satellite whose almanac has been col lected The autolocate process can take up to five minutes o Acquiring Satellites The receiver is looking for and collecting data from satellites vis ible at its last known or initialized position but has not collected enough data to cal culate a fix 31 31 N N e 2D Navigation At least three satellites with good geometry have been acquired and a hi hii two dimensional position fix latitude and longitude is being calculated 2D Differential Navigation will appear when you are receiving DGPS corrections in 020715192627 31 020715192627 31 A lei 20 f 2D mode e 3D Navigation At least four satellites with good geometry have been acquired and A The status bar at the bottom of the page displays your position is now being calculated in latitude longitude and altitude 3D important status alarm and map scale informa Differential Navigation will appear when you are receiving DGPS corrections in tion It also provides on screen user and message 3D mode POS Poor GPS Coverage The receiver is no longer tracking enough satellites for a 2D B The status bar will display an anchor symbol or posue PRX icon whenever the anchor drag alarm or o Receiver Not Usable The receiver is unusable possibly due to incorrect initialization proximity alarm has been triggered or abnormal satellite con
141. th your transducer Velocity Accuracy 0 1 knot RMS steady state 999 knots max Dynamics 69 s Sounder Power Output 500 WRMS 4000 W peak to peak Frequency 50 200 50 200 200 50 kHz POWER Input 10 40v DC Usage 10 watts max Specifications subject to change without notice With optional GARMIN GBR 21 Beacon Receiver Input Subject to accuracy degradation to 100m 2DRMS under the U S DOD imposed Selective Availability Program 98 SECTION P APPENDIX Messages The GPSMAP 235 Sounder uses an on screen message prompt to alert you to important informa tion Whenever a message appears press the key to view the message Alarm Clock The alarm clock has sounded Anchor Drag Alarm You have drifted out of the specified distance range Approaching You are less than one minute away from reaching a destination waypoint at your present speed over ground Arrival At You have arrived at the destination waypoint Can t Change An Active Waypoint You have attempted to change the active to or active from waypoint Clear the active route or GOTO before making your changes Card Format is Not Recognized The car tridge inserted is not readable by the GPSMAP 235 Sounder system and may be damaged Reinsert the cartridge to make sure it is properly installed If the cartridge is still not recognized call the G chart information line at 1 800 427 6460 Cross Track Alarm You have exceeded the off c
142. the QUIT or PAGE hey to quichly switch between the map split screen and the Sounder Page See page 28 for split screen opera tion information B The Map Page can also be configured to display additional data fields and a graphic course devia tion scale or compass See page 46 for more on map options Map Page BRG amp 6 DIS X 5 Fd cos 200 se 20 0 Fields TON Boat Symbol Map Scale The Map Page combines digital chartplotting with a user selectable display of navigation data and a built in worldwide database It will also be the page you use most to create and edit waypoints and routes Before we take off on a practice route lets take a brief look at its various features and displays The map display located in the middle of the Map Page shows your boat as a triangular marker Geographic names markers and buoys that are provided by the G chart cartridge you re using are also shown It also displays your track routes and nearby waypoints An on screen cursor lets you pan to other map areas determine the range and bearing to a position and perform various waypoint and route func tions The data window located at the top of the page provides a user selectable dis play of various navigation data including course speed over ground and bearing and distance to the cursor or a particular waypoint The status bar located at the bottom of the page displays the current map scale setting as well as the status i
143. transmitter stations called chains A chain contains a master station M and at least two but more commonly 4 or 5 secondary stations designated M Victor W Whiskey X Xray Y Yankee and Z Zulu These stations are usually separated by hundreds of miles Each station transmits radio pulses at precise time intervals The receiver measures the difference in time it takes the pulsed signal from each Master Secondary pair to reach the receiver This time is quite small generally in millionths of a second These time differences are then displayed on the LORAN receiver as the TD time difference coordinates Many of the transmitter stations serve multiple roles A station can serve as a mas ter station for one chain and a secondary station for another or as a secondary sta tion for multiple chains An example would be the chain 9610 master station and the chain 8970 Zulu station These operate on the same transmitter located in Boise City Oklahoma LORAN is being phased out as a primary source of naviga tion but should remain active until after the turn of the century LORAN TD Feature The LORAN TD feature eases the transition from using LORAN to using GPS The GPSMAP 235 Sounder automatically converts GPS coordinates to LORAN TDs for those who have a collection of LORAN fixes for favorite fishing spots and other waypoints recorded as TDs You can display your position as a TD or enter way points as TDs The accuracy to be expected
144. ute route 00 to another route in order to prevent losing the route the next time a TracBack route is activated or to save a modified version of an existing route without losing the original A To delete all waypoints from a selected route To copy a route highlight the Clear Route option and press 1 Highlight the Copy Route option and press S3 The selected route will appear SHE as the copy from route and the first open storage route will appear as the copy E Onea roeie derd dwanec to route removed from the route They are still stored in 2 Press to confirm If you d like to change the route number that is being memory however copied or the open route which is being copied to highlight the appropriate field and press 3 Select the new route number and press EB Deactivate Route Stops navigation of the current route Active Route Page Active Route 01 DOCK TARPN7 WAYPOINT BIS ETE DOCK gt FUEL BUDY GROUPR TARPN7 Active Route Page SECTION ROUTES E 0r 111 Mawel n f n mm es ell ol mm m Whenever you have activated a route the active route page will appear in the main page sequence The active route page shows each waypoint of the active route with the waypoint name desired track cumulative distance and ETE or Serre oan ace ETA for each waypoint from your present position The current destination way point the acti
145. ve to waypoint is marked with an arrow symbol As you navigate a route the waypoint list will automatically update to indicate the next active to waypoint first Each waypoint on the active route page may be reviewed deleted or changed right from the active route page To edit an active route waypoint highlight the desired waypoint and press EDIT ENTER From the active route page you can e Change the route comment See page 70 for instructions o Fdit the route as text See page 68 for instructions Additional functions for the active route are available from the active route options page Select the desired function from the pop up menu and press EDIT ENTER To display the active route options 1 Press GD i To select a menu option 12 1 Highlight the desired option and press B Active Route Page Options CP ae OPTIONS is Invert Route Activate Route ROUTES SECTION Active Route Page Q Edit On Map Options g Clear Route Restore Defaults Deactivate Route Setup Simulator Press MEHU to see the Main Menu page The following options are available from the active route page e Invert Route Activates the active route in reverse order and begins navigation e Activate Route Reactivates the active route and selects the route leg closest to your current position as the new active leg e Edit On Map Allows you to edit the selected route graphically see page 67 f
146. ver status with a signal strength bar graph and a satellite sky view in the center of the page Each page of the sounder features an options menu which gives you access to other functions and features that relate to the specific page you are viewing To get a feel for how the this works lets put the sounder into simulator mode To put the sounder in simulator mode 1 From the Status Page press the E key The options menu will appear displaying func tions and features for the Status Page 2 Use the UP or DOWN arrow of the keypad to highlight the Start Simulator option and press Gy 3 Press the key to confirm the simulator warning Once the simulator has been started the status field at the top of the page will display Simulating Navigation Now you re ready to continue the rest of the tour All the waypoint and route planning done in simulator mode will still be retained in memory for future use 3D Navigation 1 BRG OB D DIS KG gu C zi OOS i etal 078 83204 K e x er POSITION 66 WOBB dS 33g TIME 02071519262731_ _______ 02 49 48 The satellite Status Page is one of five main pages used in the sounder All five pages are linked together in a simple chain which allows you to scroll through the pages in either direction using the EB and keys To continue the tour lets move on to the next page the position page To scroll to the next page in sequence 1 Press the key Po
147. vice Tuning DGPS Stations If the I O Format is set to accept RTCM input NMEA Output for connecting a differential ready GPS beacon receiver you will need to tune a frequency in the tuning field and select a bit rate The default frequency is 304 0 kHz with a bit rate of 100 bps or the last DGPS frequency bit rate selected A Select the desired format from the NMEA field To tune a DGPS frequency The baud rate will automatically be set to the 1 Select the RTCM In NMEA Out format from the options page appropriate speed 2 Highlight the beacon receiver frequency field and press Enter the desired fre B After entering a DGPS frequency set the bit rate quency and press If you are using an automatically tuned DGPS receiver you io the speed indicated on the USCG station chart can enter 000 0 for the frequency DGPS coverage frequencies and bit rates are 3 Press to select a bit rate Five bit rates are available 0 used for automatically available from the Coast Guard s automated tuned DGPS receivers 25 50 100 and 200 bps Press to confirm The DGPS FAX service 703 313 5920 status along with the signal to noise ratio of the tuned station will be displayed at the bottom of the page 93 84 SECTION G CHARTS Installing and Removing G Charts Installing and Removing G Chart Cartridges The unit uses G chart offshore or inland cartography to display digital charts on screen G chart
148. vided with your transducer MEL i ii bob ll o mde mee et 2s IEEE r I 3 Bret craesducer at least i M umm 3 Pas cre prep sw ng dius r P Qm drm 03 php o i E l LET L Mat I ou ao de Make sure that the t ansducer s I our the transdr zer parallel walk the getton be ow water eve wen t e boat son aane at ign speed Connecting the Power Data Cable APPENDIX SECTION The power data cable connects the GPSMAP 235 to a 10 40 volt DC system Wiring and and provides interface capabilities for connecting external devices including an 8 external alarm The color code in the diagram below indicates the appropriate i harness connections Specifications RED 10 to 40 VDC WARNING BLACK Ground ee The temperature range for the GPSMAP 235 10 40 volts DC Sounder is 4 to 158 F 20 to 70 C BLUE NMEA Out Extended exposure to temperatures exceeding this range in storage or operating conditions may f 2 cause failure of the LCD screen This type of fail d m Eee NMEA Device ure and related consequences are NOT covered by Seah bomn ola the manufacturer s limited warranty RXD E WHITE No Connection fred ac GBR 21 orn Beacon Y Receiver YELLOW Alarm Low Leake 7 Alarm Relay T 100ma max coll current 96 SECTION APPENDIX Wiring and Specifications DGPS corrections are accepted in RTCM 104 v 2 0 format through the NMEA In BRO
149. xceeds the reso lution of the chart by more than two settings a No Map warning will appear in the scale field Selecting Map Scales The map display has 16 available range scales from 1 8th to 4096 nautical miles 1 4 to 7500 kilometers The map scale is controlled by the IB and keys with the current scale displayed at the bottom of the data window To select a map scale 1 Press to zoom out and to zoom in The sounder has a built in worldwide database to 64 32 in U S nautical miles see Appendix D for a built in coverage map with more detailed coverage avail able through the use of G chart data cartridges see pages 84 85 for installing and using G chart cartridges The sounder will display cartography as long as there is chart information available for the range you ve selected Map coverage will conform to the following conditions When the selected zoom range is covered by either the internal database or a G chart data cartridge cartography will be displayed When the selected zoom range is covered by both the internal database and a G chart cartridge cartography will be displayed using the data with the best resolution When the selected zoom range exceeds the resolution of the chart in use by up to two settings overzoom cartography will be displayed The display will not show any filled landmass areas and an Ovr Zm warning will appear in the scale field The lat lon grid will also be turned on re
150. xico NAD27 San Salvadr NAD83 Nahrwn Masirah IInd Nahrwn Saudi Arbia Nahrwn United Arab Naparima BWI Obsrvtorio 66 Old Egyptian Old Hawaiian Oman Ord Srvy Grt Britn Pico De Las Nieves Potsdam Pitcairn Astro 67 Prov So Amricn 56 Prov So Chilean 63 Puerto Rico Qatar National Qornoq Reunion North American 1927 Greenland Hayes Peninsula N American 1927 Mexico North American 1927 San Salvador Island North American 1983 Alaska Canada Central America CONUS Mexico Nahrwn Masirah Island Oman Nahrwn Saudi Arabia Nahrwn United Arab Emirates Naparima BWI Trinidad and Tobago Observatorio 1966 Corvo and Flores Islands Azores Old Egyptian Egypt Old Hawaiian Mean Value Oman Oman Old Survey Grt Britn England Isle of Man Scotland Shetland Isl Wales Canary Islands Germany Pitcairn Astro 67 Pitcairn Prov So Amricn 56 Bolivia Chile Colombia Ecuador Guyana Peru Venezuela So Chilean 63 S Chile Puerto Rico amp Virgin Isl Qatar National Qatar Qornoq South Greenland Reunion Mascarene Island Rome 1940 RT 90 Santo Dos ao Braz Sapper Hill 43 Schwarzeck South American 69 South Asia Southeast Base Southwest Base Timbalai 1948 Tokyo Tristan Astro 68 Viti Levu 1916 Wake Eniwetok WGS 72 WGS 84 Zanderij Rome 1940 Sardinia Isl Sweden Santo Dos Espirito Santo Sao Braz Sao Miguel Santa Maria Isla

Garmin GPSMAP 235 GPS Receiver User Manual

Contents

Download Pdf Manuals

Related Search

Related Contents