Home

Garmin 125 GPS Receiver User Manual

1. GPS 125 SOUNDER GARMIN OWNER S MANUAL amp REFERENCE Software Version 2 0 or above 1997 GARMIN Corporation 1200 E 151st Street Olathe KS USA 66062 Tel 913 397 8200 or 800 800 1020 Fax 913 397 8282 Web Site Address GARMIN Europe Unit 5 The Quad www garmin com Ltd rangle Abbey Park Romsey SO51 9AQ U K Tel 011 44 1794 519944 Fax 011 44 1794 519222 GARMIN Taiwan Corp Pao Hsing Road hone 886 02 91 ax 886 02 917 1 I Fu I All rights reserved 4th FI No 1 Lane 45 Isin Tien Taiwan R O C 7 3113 758 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 Information in thi the right to change or he express written permission of GARMIN s document is subject to change without notice GARMIN reserves improve its products and to make changes in the content without obligation to notify a y person or organization of such changes or improvements GARMIN AutoLocate and TracBack are all trademarks of GARMIN Corporation and may not be used without the expressed permission of GARMIN July 1997 Part 190 00111 00 Rev B Printed in Taiwan GPS 125 SOUNDER OPERATOR S MANUAL Welcome to the easiest to use combination GPS Depth Sounder on the water The GPS
2. 4 Note If installation requires that the antenna cable be rout ed through the mounting surface you will need to make a 0 700 cable hole in the mounting surface To Velcro mount the GA26 antenna 1 Ensure the mounting surface and the back of the GA26 antenna are both clean 2 Remove the backing from each of the Velcro strips attach them to the desired locations and press the antenna onto the mounting surface Mounting the GPS 125 Sounder The GARMIN GPS 125 Sounders compact 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 overhead or flush mounting When choosing a location for the display unit make sure you consider the following conditions 67 APPENDIX A Mounting the GPS 125 Sounder cont There should be at least 2 00 5 0 cm clearance behind the case to allow connection of the anten na power data cable and transducer cable The mounting surface should be rigid enough to upport the unit and protect it from excessive vibration and shock 77 HARHIHG The GPS 125 Sounder screen has crisp contrast in Power source most lighting conditions even full sunlight is greater than 18 volts Please Check To surface mount the GPS 125 Sounder OUP poter connection tn auod damage ta the unit FRESS ENTER WARNING If your power source ever exceeds 18 volts the abo
3. 43 REFERENCE Highway amp Compass Pages ERG DST 337 1 135 3537 13 0 TI ursuunv F DEDI ASS 7 0 25 M 0 25 ETE unc QE 1 z 12 0 OFT BF To switch the navigation page to the Compass Page press ENTER twice TRE sPD 30 11 05 DFT 585 To switch the navigation page to the Highway Page press ENTER twice Selecting a User Defined Navigation Page Once you ve selected a GOTO destination or acti vated a MOB or route the GPS 125 Sounder will pro vide graphic steering guidance to the destination with one of two navigation pages ERG DST 110 1 418 110 11 0 TRE ZPD TRE sPD 111 11 0 iT E The Highway Page the default navigation page provides a graphic highway that shows your move ment relative to the desired course with an emphasis on your crosstrack error the distance and direction you are off course The Highway Page is well suited for boating and other activities with higher speeds and straight line courses to a destination The Compass Page provides a directional pointer to the destination with a rotating compass graphic to display your direction of travel The Compass Page is ideal for activities like trawling or entering a harbor and provides better steering guidance for slow speed e g walking travel with many direc tional changes Both pages provide a digital display of the bearing and distance to the destination along with your current
4. Nhrwn Masirah Nhrwn Saudi A Nhrwn United A Naparima BWI Obsrvtorio 66 Old Egyptian Old Hawaiian Oman Ord Srvy GB Pico De Las Nv Ptcairn Ast 67 Prov S Am 56 Prov S Chin 63 Puerto Rico Qatar National Qornoq Reunion Rome 1940 RT 90 Santo Dos Sao Braz T6 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 itcairn Astro 67 itcairn Isl Prov So Amricn 56 olivia Chile Colombia Ecuador Guyana Peru Venezuela rov So Chilean 63 S Chile Puerto Rico amp Virgin slands Qatar National Qatar Qornoq South Greenland Reunion Mascarene Island Rome 1940 Sardinia Island Sweden Santo Dos Espirito Santo Island Sao Braz Sao Miguel Santa Maria Islands Azores Sapper Hill 43 Schwarzeck Sth Amren 69 South Asia SE Base SW Base Timbalai 1948 Tokyo Tristan Ast 68 Viti Levu 1916 Wake Eniwetok WGS 72 WGS 84 Zanderij Sapper Hill 1943 East Falkland Island Schwarzeck Namibia South American 69 Argentina Bolivia Brazil Chile Colombia Ecuador Guyana Paraguay Peru Venezuela Trinidad and Tobago South Asia Singapore Sout
5. REFERENCE The GPS 125 Sounder has on screen range rings to help you estimate distances relative to your present position The value of each ring is determined by the current zoom scale and is equal to 1 5 of the selected scale To turn the range rings dis play on or off the default setting is OFF see the map setup instructions on pg 55 56 4 REFERENCE Map Zooming Panning amp Pointing WP ng 200H LEVEL 2 OHI STUHF n CHFIN eer SFO To change the map scale press the IN or OUT key once for each level desired An on screen window will display the current zoom scale The crosshair will snap to waypoints highlighted on the map which allows you to quickly review or go to the selected waypoint right from the Map Page Zooming Panning and Pointing There are t ree main functions you can perform from the Map Page zooming panning and pointing Zooming is increasing or decreasing the display scale of the map Panning is using a target crosshair and the arrow keypad direction i o slide your view of the map in any cluding diagonally to view the surrounding area Pointing is the act of highlighting a waypoint on the map in order to find out more about the waypoint and conduc a GOTO or highlighting a position on the map to create a new waypoint and conduct a GOTO To select a zoom scale even while panning 1 Press I
6. key once to move the field highlight to the INVERT prompt 2 Press the key to invert the route To clear the active route from the active route page and stop route navigation 1 Use the a and 4 keys to select the CLEAR prompt 2 Press the key to clear the active route Editing Routes Once a route has been created and stored it can be edited at any time even if it is the active route To edit a route from the active route page or the route definition page 1 Use the and w keys to select the waypoint you want to edit and press CE REFERENCE Active Route Page ACTIVE ROUTE DOGH TO DRFOFF HRYFNT ETE DST DOGH Lo FISH i 04 05 FISH 2 14 54 BRUSH 44 27 DRFOFF 04 06 CLEAR INVERT Whenever you have activat ed a route the active route page will appear in the pri mary page sequence after the Highway Compass Page ACTIVE ROUTE Dock To DRFOFF HAYFAT ETE DST Doc LL FISH i 03 46 FISH 2 14 35 CAH 44 08 DRFOFF 01 06 CLEAR INVERT To edit or review a route waypoints from the active route page highlight the desired waypoint and press ENTER 35 REFERENCE Editing Routes amp On Route GOTO s ACTIVE ROUTE DOGH TO DRFOFF HAYFAT ETE DST DOGH Lo l FISH 327 3TH FISH THEERT GRIJ REHOLE CREO CHAHGE CLEAR INVERT Use the on screen menu to select the desired editing function ACTIVE ROUTE DOCH TO DRFOFF ET
7. Clearing Activating and Inverting Routes CLEAR ROUTE HAaRHIHG all was points will be remoued from this route Are vou sure EET or Ho Clearing a route only removes the waypoints from the route selected The way points used for the route will still remain in memory individually ROUTE 4 Dock TO DRFOFF MO HHYFMT DTH DST 1 buck TOTAL DST id COFY TO CLER IHU To activate a route high light the ACT prompt and press ENTER Clearing Routes continued The clear route warning will appear asking you to confirm that you want to remove all waypoints from the route 1 Highlight the Yes field with the 4 key 2 Press to confirm your action 3 Press GB to return to the Menu Page Activating and Inverting Routes After a route has been entered it can be activated in its defined sequence or inverted from the route defin ion page The process of activating or inverting a stored route takes a storage route routes 1 19 and copies it into the active route route 0 for navigation The stor age route is now no longer needed and will be retained in its original format under its existing route number E his system allows you to have an active route that you may edit during navigation and save as an entirely new route from the original You will have to copy the active route to an unused storage route to save it since new route or TracBack activation overwrites ro
8. As you navigate toward a waypoint the highway will actually move and indicate the direction you are off course relative to the position diamond on the CDI scale To stay on course simply steer toward the center of the highway If you do get off the desired course by more than 1 5th of the selected CDI range the distance you are off course will be displayed where the CDI scale setting normally appears If you get too far off course the highway has disappeared a message box will appear to indicate what course to steer to get back on course REFERENCE Highway Page ERG DST 110 1 315 090 11 05 TRE ZPD cH 0 25 D 25 ETE IHG orar 10 2 OFT Ger In this example the Highway Page indicates that you are off course to the left Steer right to get back on course Notice the emphasis of the Highway Page is on the desired course ERG DST 192 1 315 176 30 0 TRE ZPD aoi If you get too far off course a message box will appear to indicate what course to steer to get back on course most efficiently 45 REFERENCE Compass Page DOCK 108 0 6375 ERG DST TRE sPD 3n 11 0 OFT 5 TR In this example the Compass Page indicates that you are traveling in an east 090 degrees direction and the destination way point is southeast 108 degrees of your current direction of travel TRE sPD 139 11 05 iT 575 In this example the Compass Page
9. Pointer to Waypoint Digital Depth The GPS 125 Sounders Highway Page provides DFT 535 graphic steering guidance to a destination with an emphasis on a straight line course to the desired way point and the distance and direction you are off course The bearing and distance to a waypoint along with A waypoint is directly ahead when the highway is pointing straight up In the above example the way your current track and speed are displayed at the top of point is to the right 1119 of the screen with your estimated time enroute ETE and our present course 1009 velocity made good VMG or the speed you are Turn right until the highway approaching your destination shown at the bottom points straight up the As you head toward your destination the middle BN section of the screen provides visual guidance to your HESSAGES waypoint on a moving graphic highway Your present position is represented by the dia mond in the center of the course deviation scale The line down the middle of the highway represents your desired track As you navigate toward a waypoint the highway will actually move indicating the direction you re off course relative to the position diamond on the CDI scale When the highway is pointing straight up the screen the waypoint is directly ahead If the destina tion waypoint is to the left the top of the highway will lead toward the left and vice versa To stay on course simply steer in t
10. W180 0 to W172 5 12 E007 5 to E022 5 l W172 5 to W157 5 11 E022 5 to E037 5 2 W157 5 to W142 5 10 E037 5 to E052 5 3 W142 5 to W127 5 9 E052 5 to E067 5 4 W127 5 to W112 5 8 E067 5 to E082 5 5 W112 5 to W097 5 7 E082 5 to E097 5 6 W097 5 to W082 5 6 E097 5 to E112 5 7 W082 5 to W067 5 5 E112 5 to E127 5 8 W067 5 to W052 5 4 E127 5 to E142 5 9 W052 5 to W037 5 3 E142 5 to E157 5 10 W037 5 to W022 5 2 E157 5 to E172 5 ll W022 5 to W007 5 d E172 5 to E180 0 12 WO007 5 to E007 5 0 B APPENDIX D Map Datums The following list shows the 104 map datums available for the GPS 125 Sounder Abbreviations are listed first followed by the corresponding map datum name and area 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 Astrln Geod 84 Bellevue IGN Bermuda 1957 n Adindan Ethiopia Mali Senegal Sudan Algooye Somalia AIN EL ANBD 1970 Bahrain Island Saudi Arabia Anna 1 Astro 65 Cocos Isl ARC 1950 Botswana Lesotho Malawi Swaziland Zaire Zambia Zimbabwe ARC 1960 Kenya Tanzania Ascension Island 58 Ascension Island Astro B4 Sorol Atoll Tern Island Astro Beacon E Iwo Jima Astro Dos 71 4 St Helena Astronomic Stn 52 Marcus Island Aust
11. key to highlight the CLEAR LOG option 4 Press EB A confirmation page will appear 5 Use 4 to highlight the Yes prompt and press Gap HEHOKY USED To activate a TracBack route 1 of FEZ points 073 CLEAR Log TRACEACK 1 From the Menu Page highlight TRACK LOG option 2 Press to access the track log page Highlight TRACBACK and press ENTER to begin Once the TracBack function has been activated the TracBack navigation GPS 125 Sounder will take the track log currently stored in memory and divide it into segments called egs Up to 30 temporary waypoints e g T0017 will be created to mark the most significant features of the rack log in order to duplicate your exact path as close y as possible A TracBack route from your present position to the oldest track log point will be created as an active route the active route page will appear and provide steering guidance to each waypoint back to the 29 starting point of your track log 3 Highlight the TRACBACK option and press B REFERENCE i Tips on Creating and Using the TracBack Feature The GPS 125 Sounders TracBack feature is designed TracBack to help you quickly create and activate a route that fol lows your path back to a user defined starting point To get the most out of the TracBack feature remember the following tips Navigation Always clear your track log at the exact point that you wan
12. speed and track over the ground Select the desired nav igation page at any time To select the Compass or Highway Page 1 Press until the current navigation page appears 2 Press CIE An on screen box will appear with the navigation page not currently in use highlighted as the default 3 Press to switch the navigation screen Using the Highway Page The GPS 125 Sounders Highway Page also pro vides graphic steering guidance to a destination with a greater emphasis on the straight line desired course and the distance and direction you are off course The bearing and distance to a waypoint along with your current track and speed are displayed at the top of the screen with your digital depth estimated time enroute ETE and velocity made good VMG or the rate you are closing in on your destination at the bottom Distance to i Waypoint Bearing to Waypoint a ERG DET 110 1 418 Track Over w 1107 11 0 T Ground TRE zFD EL Speed Over DOCK Ground Destination Waypoint Graphic o z5 lt q CDI Highway Estimated es Velocity Time Enroute Made Good Pointer to Waypoint Digital Depth As you head toward your destination the middle section of the screen provides visual guidance to your waypoint on a moving graphic highway Your present position is represented by the dia mond in the center of the course deviation scale The line down the middle of the highway represents your desired track
13. 50 The chart speed may be adjusted between 10 slow est and 100 The default is 100 Sounder Setup The sounder setup page lets you customize the sounder to your needs and activate certain alarms Access the Sounder Setup from the Menu Page HEHU Z UHDER SETUF HERKEZT HFTZ SEHZTIUTY 5O HAYFOIHT LIST CHART SFO 100 HHITELIHE E RHG HODE AUTO DIST AHD SUH FISH ID OFF TRACK LOG HOISE REJ AUTO INTERFACE UHITS FEET SYSTEM SETUF KEEL 0 0 RLRHRHE SHAL OFF 20 0 DEEF OFF i00 SOUHUER SETUP EIU E BLE Sensitivity The sensitivity setting determines how sensitive the sounder is to sonar echoes High sensitivity may show clutter which can conceal fish while low sensitivity may not show all fish Note A setting of 50 will give you the best results for most fishing situations To adjust sensitivity 1 Highlight SENSITIVITY and press EI The Sounder Page will appear with SENS and a value displayed in the upper left corner of the page 2 Press the arrow keypad up or down until the desired sensitivity level is shown and press Gla Chart Speed The chart speed field allows you to select the speed at which the sonar display scrolls across the screen To adjust chart speed 1 Highlight CHART SPD and press Ell The Sounder Page will appear with SPD and a value displayed in the upper left corner of the page 2 Press the arrow keypad up or down until the desired chart
14. BRUSH DRPOFF FISH 1 FISH 2 DEL ALL HPTS The total number of used and available waypoints is indicated at the top of the page Route waypoints are indicated by an R Above R03 means route 3 DEL ALL HFTz HARHIHG all user defined waypoints and routes will be deleted Are vou sure EET or Ho Deleting all user waypoints will also delete all routes stored in memory 23 REFERENCE Waypoint Definition Page HRYFOIHT HAHE DEFOFF ERG ooo 0 008 REHAHE MEH DELETE DOHNE Use the waypoint definition page to review rename or delete stored waypoints and to create new waypoints manually HAYFOIHT REHAHE MEH DELETE DOME To create a new waypoint by manually entering coor dinates or by referencing an existing waypoint highlight the NEW prompt and press the ENTER key 24 Waypoint Definition Page The last of the three waypoint management pages is the waypoint definition page This page lets you create new waypoints manually or review and edit existing waypoints Way point HAYFOIHT__ Name gt NAHE DOCK ame i Position H 328753 382 a WO34 58 7T m BB FEE HT 22 28 dinates 2 amp Waypoint Comment Reference p Waypoint P Distance from Reference Waypoint Bearing from lrd 0 628 Reference dl REHRHE HEH Waypoint DELETE ia Function Prompts To create a new waypoint manually you ll need to know its posi
15. RMS steady state 99 knots max Performs specification to 3g5 Input 12 18v DC Usage 5 watts Specifications subject to change without notice With optional GARMIN GBR 21 Beacon Receiver Input Subject to accuracy degradation to 100m 2DRMS under the US DOD imposed elective Availability Program n APPENDIX C The GPS 125 Sounder uses a flashing on screen mes sage to alert you to important information Whenever the message indicator appears press the PAGE key to view the message page There are two types of messages temporary Messages amp Time Offsets alerts and condition alerts Temporary alerts are cleared from the message page after viewing while condition alerts remain on the message page until the condition has been resolved Pay careful attention to all messages for your own safety Active WPT Can t be Deleted You have attempted to change the active to or active from waypoint Clear the active route or GOTO before making your changes Accuracy has been Degraded The accuracy of the GPS 125 Sounder has been degraded beyond 500 meters due to poor satellite geometry or data quality You should check other navi gational sources to verify the position indicated Already Exists The name you are entering already exists in the GPS 125 Sounders memory Approaching You are one minute away from reaching a destination waypoint Deep Water Alarm The current depth is equal to or more than the s
16. The RINGS selection will display the three pre sent position range rings on the map The ROUTE selection will plot the straight leg lines between waypoints of an active route and display all route waypoint names The NEAREST selection will show the nine near 5 est waypoints to your present position not the target crosshair on the map The NAMES selection will display the waypoint name for the nine nearest waypoints To turn a plotted item on or off 1 Highlight the confirmation Yes or No field for the plot ted item and press Ej Make your desired selection and press GEG Track Log Display The track log option sets the number of points the unit will attempt to display on the Map Page The default setting of 250 points provid with minimal screen clutter The axi es good resolution num setting is 768 points Once you ve reached the maximum number of track points the older points wi points are added Adjusting the tra will not affect whether or not the r track log or the ability to create a Trac To enter a log setting 1 Highlight to the TRACK LOG fi be lost as new ck points displayed eceiver records a Back route eld and press CEg 2 Enter a value in the 3 digit field and press Gg If you do not want to display a track enter 000 REFERENCE Alarms Setup HEHU HEAREST HFTZ HAYFOIHT LIST HAYFOIHT ROUTES DIST AH
17. able to take the Getting Started tour with your boat in the water you may use the built in navigation simulator to practice using the GPS 125 Sounder To use the simulator see pg 60 Marking a Waypoint To begin the live tour lets take the position you have acquired either by just initializing the unit or by having turning the unit on and mark it as a waypoint 1 Press the key to capture and hold your position IN To mark a position you must have a 2D or 3D fix or have the receiver in simulator mode If you try to mark a position without a position fix a No GPS Position message will be displayed The mark position page will appear showing the captured position and a default 3 digit waypoint name Lets change the name something more meaningful like DOCK 1 Press the V key once to move the field highlight from the SAVE field to the name field 2 Press to clear the default name 3 Press and hold the lt key to scroll through the alpha bet until the letter D appears 4 Press the P key once to move the character highlight to the next character space 5 Repeat steps 3 and 4 until the word DOCK is shown 6 Press to complete entry of the name 7 Press the wr key twice to return the field highlight to the SAVE field 8 Press the key to confirm that you want to save the position as a waypoint named DOCK The mark position page will now be replaced by the Position
18. baud rate is available for all RTCM To enter a DGPS beacon frequency interface opiions 1 Highlight the FREQ field and press EE THTERFACE 2 Enter the desired frequency and press CJ RTCH HHER o mE WHEA 0ig3 2 0 3 Highlight the RATE field and press QIB 4800 baud CECO REGIE 4 Use and to select the desired transmit rate FREQ 304 OKHz RATE 100bps DIST L When the GPS 125 Sounder is receiving DGPS cor 5 Press the key to confirm your entry EHE dB rections from the GBR 21 the BEACON RECVR sec Tuning tion of the T O setup page will display the beacon fre quency and signal strength as well as the distance from the transmitter to the beacon receiver At the bottom of the beacon receiver field a status message will keep you informed of DGPS activity Once a RICM option is selected you must manual ly tune the beacon receiver from the frequency field A Tuning message will be displayed while a bea con signal is being tuned Once the beacon signal has been tuned a Receiving message will be displayed If a beacon signal is tuned and no corrections are being received a No Data message will be dis I played 50 If a beacon signal cannot be tuned a No Status message will be displayed The GPS 125 Sounder will also display one of three alert messages concerning DGPS operation through the message page No DGPS Position not eno
19. by using an on screen bar scale To set the screen contrast 1 Move the field highlight to the CONTRAST field and press the key 2 Use the and gt keys to adjust the bar scale for the desired contrast and press the key Tone Setting You may choose from three settings for audible tone messages only messages and keystrokes or no tone at all To specify a tone setting 1 Highlight the TONE field and press the key 2 Use the a and w keys to select the desired tone and press Gig T REFERENCE Navigation Setup The navigation setup page is used to select units of measurement for position format map datum CDI Navigation Setup scale and distance speed and heading information Position Formats The default position setting for the GPS 125 Sounder is latitude and longitude in degrees and min utes hddd mm mmm You may also select degrees aa minutes and seconds hddd mmss s degrees only Dddd mm ronan hddd ddddd UTM UPS coordinates or British HAF DATUA German Irish Maidenhead Swedish Swiss or Taiwan Mas 84 grid formats cor 0 25 To select a position format ee Haiti 1 Highlight the POSITION FRMT field and press Cg Huta Auto Hag E004 2 Use the and w keys to select the desired set 3 ting Confirm the setting by pressing GRD The position format may be Map D set to display your choice of SIRDEDAHUMS many formats Note degree The map da
20. for the antenna unit and transducer see right Once you ve identified the best mounting location and then Choosing an Antenna Location nstall the antenna transducer and cable first he unit and wiring harness The antenna should be mounted in a location that has a clear unobstructed view of the sky in all direc tions to e sure the best reception in all conditions Avoid mounting the antenna where it will be shaded by Uu the boat superstructure a radome antenna or mast Most marine VHF and loran antennas will not seriously degrade t he GPS antennas reception Never paint the antenna or clean it with harsh solvents Typical Bass Boat Installation Two types of antenna assemblies are used with the GPS 125 Sounder White GA28 Marine Antenna with 30 ft cable and BNC connector Black GA26 Low Profile Antenna with 8 ft cable BNC connector flange and Velcro mounting hardware Mounting the White GA28 Antenna APPENDIX A Installation To install the GA28 antenna 1 Attach a 1 X 14 mount not included to the desired antenna location using the appropriate fasteners 2 Screw the antenna directly onto the 1 X 14 mount 3 Route the cable to the location of the GPS 125 Sounder using the appropriate tie wraps escutcheon plates and sealant to secure the cable along the route and thro
21. in If the country you re in is not listed select another country within 500 miles of your present position 4 Press Cg to finish The GPS 125 Sounder will now begin searching for the appropriate satellites for your location and should acquire a position within a few minutes You can verify that you have acquired a position by watching the Satellite Page transition to the Position Page provided you havent pressed any other buttons or by looking for a 2D NAV or 3D NAV status at the top left corner of the Satellite Page Initialization Troubleshooting If you have trouble initializing the receiver or acquiring a position check the following Does the antenna have a clear view of the sky If there are nearby buildings heavy tree cover a covered boat slip etc the unit may not be receiving enough satellite signals to calculate a position Have you selected the right country state region from the EZinit list Check for the correct approximate lat long on the Position Page or reselect the appropriate country from the list to restart the initialization Have you moved more than 500 miles from the last calculated position with the receiver off Reinitialize the receiver selecting the country state region of your new location from the EZinit list Your unit should now be initialized If you want to complete the Getting Started Tour at another time you may now turn the GPS 125 Sounder off see below or you
22. may continue To turn the GPS 125 Sounder off 1 Press and hold 38 for approximately three seconds until the receiver turns off 01031217212328391 The GPS 125 Sounder s Satellite Page will help you etermine which satellites are in view and whether or not any satellites are being shaded or blocked from the receivers antenna By monitoring the signal strength bars at the bottom of the page and the shy view you ll be able to see how moving to another area with a clearer view of the sky will improve satellite reception and speed up signal acquisition Primary Pages TING Ss TED Primary Pages The GPS 125 Sounder uses six primary pages to give you information The pages are arranged in a con tinual loop and can be easily viewed in forward or reverse order by pressing either the GY or GOB key Before we start the tour lets briefly look at these pages SD HAW EFE 142 0 45 HENU ii p su riim H ERG Lu HEAREST PTS i HAYFOIHT LIST Tees 3 D HRTFOINT O8 E ROUTES THE BLI DIST AND SUN l 7 amp 10975 Cd TRACK LO POSITION S FISH 7 INTERFACE M 4 amp 21 010 SYSTEM SETUP HAW SETUP nord Ee EEZ ALARHS SETUF Eba IRH DFT GPD TETHER giit z a EAER EELT D HAU EFE 43 hl FT 0103121721232831 Satellite Page The Satellite Page will allow you to monitor satellite signal reception and strength uat Sounder Page Satellite Page The S
23. name this waypoint CHANNL See Marking a Waypoint on pg 10 11 2 Next make a moderate turn in any direction safe for navigation and proceed for another 3 minutes Going To a Waypoint Once you ve stored the CHANNE waypoint in memory you can use the GPS 125 Sounder to guide you to it by performing a simple GOTO A GOTO is simply the receiver drawing a straight line course from your present position to the destination you ve selected IN Use caution when navigating A straight line course reflects the shortest distance to a way point and does not navigate around obstruc tions such as land or buoys etc Now that you have moved away from CHANNE for three minutes lets try navigating back to it To select a GOTO destination 1 Press the key The GOTO waypoint page will appear displaying all the waypoints in memory in alphabetical order 2 Use 4 amp or W to highlight the CHANNL waypoint 3 Press the key to confirm that you want to navi gate to the displayed waypoint The Highway Page default will appear GETTING A Using the Highway Page Distance to Bearing to EE EET ad Waypoint Using the Waypoint 270 D 205 Highway Page Current fra 9 amp Q 4 0 oe Curent sped TRE FO Destination GHAHHL Destination Waypoint Waypoint BLUT T1 m IET Finish Line Diil UPEER Position Diamond 100 11 04 AE E Velocity Made TRE SFO Good DOCK Estimated Time Enroute
24. paused display and cannot show an area that has scrolled off the screen 3 Press GI A page will appear with the waypoint s coordinates default three digit name and depth 4 Enter any waypoint information such as name com ment etc and press EB Note the waypoint s depth is the default comment It is possible for a custom comment to type over this number 5 When finished highlight SAVE and press El The Sounder Page will reappear 6 To resume screen movement press Ca Zoom Function The sounder zoom function allows you to see the current display picture at 2 times 2X or 4 times 4X magnification 2X means that the screen displayed will now cover 1 2 the range you were originally viewing in twice the detail and 4X shows 1 4 the original range at four times the detail Because less area is being shown in a zoom screen objects can be seen in greater detail The zoom function is accessed by using the IN and OUT key when viewing the Sounder Page The sounder zoom function is divided into two display levels 2X Displays the zoomed screen at 1 2 the original range 4X Displays the zoomed screen at 1 4 the original range Once activated the zoomed picture becomes the Sounder Page display Note The zoom function can only be deactivated by pressing the OUT key until the original zoom scale appears The zoom function operates in either Auto range or Manual range Zooming while in Aut
25. the simulator 1 Highlight SYSTEM SETUP and press Gg 2 Highlight the MODE field and press GJ 3 Use or w to select the simulator mode 4 Press the key to confirm 5 Press to return to the Menu Page REFERENCE Once the simulator mode has been activated use the Position Compass or Highway Page to set your speed track and simulated depth Nav Simulator HO 345 nis ui TRACK SPEED pon poo TRIF ALT O 0 10815 FOSITIOH H 37 33 350 W d5 53 O30 03 33 39 pm OFT ABR To enter track speed position and depth 1 Highlight the TRACK field and press the key 2 Enter a track and press EJ 3 Highlight the SPEED field and press GEB 4 Enter a speed and press Eg 5 Highlight the POS field and press CJ 6 Enter a position and press the key 7 Highlight the DPT field and press GEB 8 Enter a depth and press the key IN The GPS 125 Sounder does not track satellites or receive sonar signals in simulator mode Although you can create and save waypoints and routes while using the simulator mode never attempt to use the simulator mode for actual navigation or fishing depth sounding 63 APPENDIX A Installation Installation The GPS 125 Sounder must be properly installed according to the following instructions to get the best possible performance To begin installation you ll need to select a suitable mounting position
26. to review the basic terms and concepts briefly explained below Other navigation and GPS definitions used in the manual are defined in the appropriate reference sections of the manual Almanac Data 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 Bearing BRG The compass direction from your position to a destination Course Made Good CMG The bearing from the active from position your starting point to your present position Crosstrack Error XTE 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 transmit 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 left to your destination at your present speed Ground Speed SOG The velocity you are traveling relative to a ground position INTRODUCTION Latitude The north south measurement of position perpendicular to the earths polar axis Longitude An east west measurement of position in relation to the Prime Meridian an imagi nary circle that passes through the north and south poles P
27. you manage a large number of waypoints quickly and efficiently The nearest waypoints waypoint list and waypoint definition pages are accessed through the Menu Page To select a waypoint submenu page 1 Press GB or GVW until the Menu Page appears 2 Use the a and w keys to highlight the waypoint submenu page you want to use 3 Press to display the submenu page 4 To return to the Menu Page press the key Nearest Waypoints Page The nearest waypoints page shows the nine nearest waypoints that are within 100 miles of your present position with the bearing and range noted for each waypoint During an emergency the nearest waypoints page can give you the closest points of safety in your area at a glance The nearest waypoints page will also let you retrieve a waypoint definition page or go to a selected waypoint right from the list To review the waypoint definition page of a high lighted waypoint from the list 1 Press the key To return to the nearest waypoint page when the DONE field is highlighted 1 Press the key To go to a highlighted list waypoint 1 Use the 4 amp and w keys to highlight a listed way point 2 To select a highlighted nearest waypoint as a destina tion press the key 3 Once the GOTO waypoint page appears press the key to confirm the selected waypoint as your destination Waypoint List Page The waypoint list page provides you with a com plete list of all waypoi
28. 0 0 00 00 eee 71 Speed Filter eorr coire Us e 54 Speed Over Water SOW 3 Starting Stoppinga GOTO 28 R System SUP ica wees deerat tent 5 Receiver Status i syare gae phan 19 ROUES comis tw bu ate duet al 31 36 T Active From Waypoint 3 Table of Contents 000 1 Active Len sc ao bep ee 3 Temperature Range 71 Active Route Page 35 Time Format 2 cedecce sert eee 52 Active To Waypoint 3 Time Offsels xia rece ew ears 73 Activating and Inverting 34 Tips On Using the TracBack Feature 30 COP YIN sistas wie Sane E fees 33 TONE SENE sites dracii He eae ate 52 Clearing eee 33 TracBack Navigation 29 Creating and Navigating 3 Track TRK oes Pete PEERS EM 3 Editing 0 0 0 0 eee 35 Track Criteria ciens face enet 48 On Route GOTOs 36 Transducer Installation 65 Route Definition Page 32 Trip Odometer cic sees 20 Turning the GPS 125 Sounder Off 7 S Turning the GPS 125 Sounder On 6 Satellite Page 1 ebsssie ep vd 8 Screen Contrast 04 52 U Selecting a GOTO Destination 12 Units of Measure 54 Sounder Page 2 02 2 8 Universal Transverse Mercator UTM 3 Auto Range Mode 15 Using the Compass Page 46 Chart Speed 0 0 0 00005 58 Using the Highway Page 13 45 Depth Con
29. 125 Sounder represents GARMINS continuing commitment to provide mariners with quality navigation and fishfinding information in a versa tile accurate and user friendly design which will be useful for years to come It is important that you take the time to read through the operators manual to understand the operating features of the GPS 125 Sounder The manual is orga nized into four sections for your convenience Introduction gives a quick overview of the manual and contains the table of contents and glossary of navigation terms Getting Started takes you through step by step instructions to initialize the receiver for first time use and introduces you to the basic features of the unit with a quick start orientation to the GPS 125 Sounder This section has been designed to acquaint you with the unit and provide a basic working knowledge necessary to use the unit in typical conditions Reference provides detailed explanations of the advanced features and oper ations of the GPS 125 Sounder in a topical format This allows you to concen rate on a specific topic quickly without reading through entire sections of text hat you may not need The Appendix section contains installation instructions and items with mul iple listings such as map datums time offsets and the index See your GARMIN dealer for accessories including our PC kit and standard or temperature reading in hull and transom mount transducers Thanks for choo
30. 3 Enter the comment and press the key to confirm Renaming and Deleting Waypoints REHRHE HRYFHT From oo1 Ta DRPOFG Are vou sure Yeo or Ho The rename and delete function fields are located at the bottom left of the waypoint definition page you ll need to use the key to move the field highlight out of its standard up and down scrolling sequence To rename a stored waypoint 1 Highlight the RENAME field and press gl 2 Enter the new waypoint name and press Eg 3 Press the key to confirm your changes To delete a stored waypoint HAYPOIHT MAHE FTSH 3 H 3r30 719 W ds 20 048 23 FEB 97 00 18 ERG l v 1 63m REMHAHE MEH ee COME 1 Highlight the DELETE field and press Eg 2 Press the 4 key to select the YES prompt 3 Press to delete the waypoint Scanning Waypoints As you manually enter a waypoints name the GPS 125 Sounders waypoint scanning feature will automati cally display the first numerical or alphabetical match of the character you have entered to that point This helps eliminate the need to always enter a waypoints complete name To scan waypoints from a waypoint field 1 Highlight the waypoint name field and press Gig 2 Press the 4 key to clear the name field 3 Use the and w keys to scroll through way points 4 If you have more than one waypoint that begins with the same letter or number you must use the key to move to the next
31. A 0183 version 1 5 Approved sentences PBWC GPGLL GPRMB GPRMC PXTE GPVTG GPWPL G G Proprietary sentences PGRMM map datum PGRMZ altitude PSLIB beacon rec control 70 NMEA 0183 version 2 0 Approved sentences GPGGA GPGLL GPGSA GPGSV GPRMB GPRMC GPRTE GPWPL Proprietary sentences PGRME estimated error PGRMM map datum PGRMZ altitude PSLIB beacon receiver control APPENDIX B The GPS 125 Sounder is constructed of high quality materials and should not require user maintenance Should your unit ever need repair please take it to an authorized GARMIN service center The GPS 125 Sounder has no Wiring amp user serviceable parts Never attempt any repairs yourself Specifications To protect your GPS never allow gasoline or other sol vents to come in contact with the case or screen Clean the case and screen with a soft cloth and a household window cleaner PHYSICAL Case gasketed construction Size 49 Hx53 Wx2 4D 15 6 x 5 1 x 1 23 cm Weight Less than 1 Ib 454g Temperature Range 5 to 158 F 15 to 70 C PERFORMANCE Receiver Acquisition Time Update Rate Position Accuracy Velocity Accuracy Dynamics POWER Differential ready MultiTrac8 Approx 20 seconds warm Approx 2 minutes cold Approx 7 5 minutes AutoLocate l second continuous 5 10 meters 16 33 ft with DGPS corrections 15 meters 49 ft RMS 0 1 knot
32. B or GBM once for each level of increase or decrease desired 2 Press and hold down either key to increase or decrease by more than one scale To activate the pan function 1 Press the arrow keypad in any direction inc diagonally As you begin to move the map a crosshair appear This crosshair will now serve as a targe distance and bearing from he target crosshair will appear or the moving map The your present position to a GOTO at the time you he crosshair bearing and ing and distance o highlighted you can revi in the upper corners of the map If you are co ning function the GOTO waypoint As you pan around the map you ll arget crosshair will point to o highlight the waypoint name Once a waypoint activate the pa distance will replace otice t scree uding will marker ducting he bear hat the waypoints and name is ew its waypoint defini or execute a GOTO righ from the Map Page lon page To review the definition page for a waypoint high lighted on the map 1 Press GRE The waypoint definition page will appear Review and make any desired changes to the high lighted waypoint 2 When finished highlight the DONE field and press ENTER To go to a waypoint highlighted on the map 1 Press the key The GOTO waypoint page will appear with the waypoint s name highlighted 2 Press the key to confirm To stop the panning funct
33. B waypoint be sure to rename it because it will be overwritten the next time a MOB is executed REFERENCE TracBack Navigation The third method of navigating to a destination is by using the GPS 125 Sounders TracBack feature The TracBack TracBack function allows you to quickly and easily retrace your path using the track log automatically stored in the receivers memory The advantage of the TracBack feature is to eliminate the need to mark way Navigation points along the way and manually create and activate a route back to where you began your trip FACK LoG i RECORD yes The Ti acBack route s created by reducing your TEE current track log into a route of up to 30 waypoints Automatic and activating an inverted route along those points Once activated a TracBack route will lead you back to HEHORY USED the oldest track log point stored in memory so its usu 1 of 7E2 ally a good idea to clear the existing track log at the points t 02 starting point of your current trip e g your car or the CLEAR LOG dock before you get started IRREEBERT To clear the track log and define a starting point Clearing the log before you for a TracBack route ij p here y get started will define the 1 From the Menu Page highlight TRACK LOG position the TracBach func tion will return you to 2 Press to access the track log page TRACK LOG RECORD Yes CRITERIA Automatic 3 Use the
34. D SUH TRACK LOG Alarms Setup THTERFACE SYSTEM SETUF HAW SETUF HAF SETUP ALARH SETIF SQUHDER SETIF ALARMS SETUF The GPS 125 Sounder alarms setup page is used to set the three available alarms the anchor drag alarm arrival alarm and CDI alarm The anchor drag alarm will sound if your boat has moved outside a range measured from a central point your position The arrival alarm sounds when you are approaching a waypoint and have reached the user defined distance The CDI alarm will alert you when your track varies from the shortest distance to a way point by the defined range The arrival alarm will sound at the determined distance from the destina tion waypoint To set the alarms 1 Highlight ALARMS SETUP and press Giga HLARHS SETUF 2 Select the desired alarm distance field and press co 3 Enter the distance for the alarm and press Egg 4 If you would like to change the On Off setting press the key and use the or w keys to turn the alarm on or off 5 Enter a setting and and press Gia Use the anchor drag alarm as an indicator of move IN When setting the anchor drag alarm remem ment due to possible anchor ber that Selective Availability can degrade slippage your GPS position as much as 100 meters and may cause false anchor drag alerts 57 REFERENCE Sounder Setup Adjust the sensitivity range between 0 and 100 The default setting is
35. E DST 02 16 0 47 13 05 dg 3H O1 04 CLEAR INVERT You can skip ahead and navigate to any route way point by highlighting the desired waypoint and press ing the GOTO key 36 Editing Routes continued An on screen menu of editing choices will appear with options for reviewing inserting deleting or changing the waypoint field highlighted Use the a and wr arrow keys to select among the editing choices Once you ve selected a waypoint from the route list choose a menu function 1 To review the definition page for the waypoint high light the REVIEW prompt and press Eg 2 To add a new waypoint preceding the selected way point highlight the INSERT prompt and press Gg 3 To remove the selected waypoint highlight the REMOVE prompt and press the key 4 To replace the selected waypoint with a new way point highlight the CHANGE prompt and press GR Use the route waypoint editing instructions described earlier for creating a route to complete your changes If you are editing the active route route 0 copy your new route version to an empty route to save it because the active route will be overwritten by a new route activation If you add delete or change the first or last way point of a route the default comment first and last waypoint will automatically be updated On Route GOTOs At the beginning of this section we mentioned that the GPS 125 Sounder will a
36. EST Yes variation value HAHES Weer TRACK LOG 250 Map Setup and Orientation The map setup page lets you select map orientation and specify what items are displayed The map may be The North Up orientation oriented to north up the direction of current travel causes the top center of the track up or the direction of an active route leg Map Page to represent desired track up The default setting is track up 000 the right center to be To change the map orientation 090 the bottom center 180 and the left center to 1 Highlight the ORIENTATION field and press GEE be 270 2 Use the a and w keys to toggle through and select the desired setting and press Gag 55 REFERENCE Map Setup HAF SETUF ORIENTATION Track Up FLOTTED ITEMS RINGS lo ROUTE vez HEAREST Yes HAWES Wes TRACK Loe 250 On screen range rings will appear on the map when the RINGS option is set to the Yes position HAF SETUF ORIENTATION Horth Up FLOTTED ITEMS RINGS Ha ROUTE vez HERREZT Yes HAHES Was TRACK Loe H50 A higher track log value will make a more detailed track log but will take up more memory Selecting Displayed Items on the Map Page The rest of the map setup page lets you specify what items are displayed or plotted on the Map Page The first four plot items may be turned on or off by selecting Yes or No in the appropriate field
37. Interface Setup 0 0 00000 49 Introduction 0 000 iii L Latitude cessere ey 3 Longitude sirsie ta dain E ees 3 APPENDIX E Index M Magnetic Heading Reference 54 Man Overboard Function 28 Map Datums 53 74 Map Rage is occ oi a best prr eps 9 Clearing a Cluttered Map Display 17 Map Setup and Orientation 55 Selecting Items on the Map Page 56 Track Log Display 56 Track Log Setup ccce cree 4T Using the Cursor on the Map 43 Using the Position and Map Pages 11 Zooming Panning and Pointing 42 Zoom Scale s co ERR EYES 42 Menu Page ika scat de EY hA 9 MESSARCS nee tabs etes 72 Mounting the Antenna 65 Mounting the GPS 125 Sounder 67 N avigation Basics 4 avigation Page 9 avigation Setup 53 avigation Simulator 10 62 o Operating Modes 2 51 P POSION ey caseo RP reU een 3 Position Formats 0 53 Position Page s ocak dts eie 8 Power Input sieste titah chet 70 Power Overload Message 68 Power Usage csscts i50 eas ex ds 70 Primary Pages rierren td eR nae 8 H APPENDIX E Underwater Waypoint Feature 15 38 Using the Sounder Page 14 Whiteline 000 0 000 3 59 Index Zoom Function s cee essere 39 Specifications 0 00
38. OFF field will be highlighted 2 Press the arrow keypad up or down until the desired mode is shown and press JJ Depth Units The depth units field allows you to determine whether sounder depth is displayed in feet meters or fathoms To set the depth units 1 Highlight UNITS and press GJ The FEET METERS FATHOM field will be highlighted 2 Press the arrow keypad up or down until the desired depth unit is shown and press EJ Keel Offset This setting allows you to set the point from which the GPS 125 Sounder will measure depth This makes it possible to measure depth from the bottom of the keel instead of from the transducers location A posi tive number will measure depth from a deeper point while a negative number reflects a shallower point To set keel offset 1 Highlight the KEEL field and press EI The value field will be highlighted 2 Select plus or minus and press EI The high light will move to the value field 3 Enter the desired offset value using the arrow keypad and press Gia Sounder Alarms This field allows you to set shallow and deep depth alarms and an alarm for specific sized fish targets Three options are available Shallow water Has an on off setting and a depth value field Deep water Has an on off setting and a depth value field Fish Has an on off setting and a medium large all size field To set a sounder alarm 1 Highlight the des
39. OSH Was paint 006 H 3 52 253 W d7 13 538 DEFTH 38 FT Add to route number The underwater waypoint will be marked using the sounder position The default comment will be the cursor depth To switch from auto to manual mode 1 Pressthe a or w keys until the desired depth range is displayed on the depth scale at the left side of the page 2 Press to confirm the selected range To switch from manual to auto mode 1 Press the arrow keypad up or down until you hear a repeated beep Auto will be displayed in the range field at the top left corner of the screen 2 Press DJ Underwater Waypoint Feature The underwater waypoint feature marks a way point5 position and its depth This makes it easier to find and use an object such as a stump for a future fish ing location The targets depth will be shown on the left or right side of the screen depending on the location of the cursor and will move up and down as the cursor moves To mark an underwater waypoint 1 Press to pause the screen movement 2 Use the arrow keypad to activate and move the cursor onto the desired target underwater drop off stump etc A data field will appear showing the cursor s dis tance and bearing from your position Since the dis tance and bearing shown are measured from the boat to the waypoint they will change as your boat moves even if the cursor is stationary Note The cursor will not move off the
40. Page or whatever page was displayed prior to pressing the key The DOCK waypoint is now stored in the GPS 125 Sounders memory and will remain there until you manually remove it or clear the receivers memory For more on waypoint manage ment see pg 21 28 Using the Position and Map Pages Now that you ve marked a position lets see how the Position and Map Pages can be used to monitor your progress as we head out into the open water IN As always ensure your primary focus is on boating traffic and monitor the GPS 125 Sounder briefly when operating your boat Graphic Compass Tape Track Over TRACK SPEED Grund 286 13 0 lt q Current Speed TRIF ALT Tip _ y 17h 10975 Odometer FO ZITIOH ee Altitude N H 428 21 10 Position _ Ww M rE 01 556 12 24 Hour Display lb3EXEdBam lt t time OFT 30 Digital Depth The direction you are moving track and your speed are shown on the top of the Position Page below the graphic compass tape The latitude longitude and approximate altitude of your position with a resettable trip odometer are displayed in the middle of the page with the time of day and digital depth shown below GETTING A Marking Waypoint amp Map Page GPS FOSITION Was paint Doct _ H 48 21 010 W rs 33 BBO DEFTH 59 FT Add to route number SANE The arrow keypad is used for all data entry Use the UP and DOWN k
41. TO function which lets you choose any stored waypoint as the destination and quickly sets a direct course from your present position To activate the GOTO function 1 Press the key The GOTO waypoint list an alpha betical list of all available waypoints will appear 2 Usethe and w keys to select the waypoint you want to navigate to it may already be highlighted 3 Press the key to confirm or to stop selec tion of a GOTO destination and return to the previous page Once a GOTO waypoint has been activated the Compass Page or Highway Page will provide steering guidance to the destination until either the GOTO is cancelled or the unit has resumed navigating the active route see pg 36 To cancel an active GOTO 1 Press the key 2 Use the arrow keypad to move the field highlight to the CANCEL GOTO prompt at the bottom of the page and press Gago Man Overboard Function The GPS 125 Sounders man overboard function MOB lets you simultaneously mark and set a course to a position for quick response to passing positions like the spot where your hat blew overboard To activate the MOB mode 1 Press the MEM key The GOTO waypoint page will appear with MOB selected as the default destination 2 Press the key to begin MOB navigation The GPS 125 Sounder will now guide you to the MOB waypoint until the MOB GOTO is cancelled see to cancel an active GOTO above If you want to save the MO
42. acking data From this page you can select whether or not to record a track and define how it is recorded To turn the track log on or off 1 Highlight the RECORD field and press EB 2 Select Yes or No and press EIE NOTE Turning the track recording off will prevent using TracBack REFERENCE Menu Page amp Distance Sun Calculation HEHU HEAREST HFTZ HAYFOLTHT LIST HAYFOLHT ROUTES DIST AHD SUH TRACK LOG THTERFACE SYSTEM SETUF ALARHS SETIF SOUNDER SETUF To select a submenu use the UP and DOWN arrow keys to highlight a menu option and press ENTER DIST AHD SUH FROH DOCK T5 FISH amp ERG DzT adat 37 15 DATE 13 FEE 37 SUNRISE 10 54 37 pm SUNSET 09 5 1 32am AT DESTINATION The GPS 125 Sounder will calculate the sunrise and sunset times of any stored waypoint or your present position To calculate enter the date and year and press ENTER 4 REFERENCE Track Log Setup amp TracBack TRACK LOG RECORD fo CRITERIA Automatic HEHORY USED 2 of TE2 points 073 CLEAR Log TRACEACK Turning the track recording option off will prevent you from using the TracBack option TRACK LOG RECORD yes CRITERIA Time Interual fo 00 30 HEHORY USED B of Tez points 073 CLEAR Log TRACEACK Entering a time interval in to the track recording crite ria will plot your position points further apart than they
43. as aeaiia aa iie 14 17 Clearing a Map and Turning Off aaua 17 SECTION THREE Reference Satellite Page niro mae ede pene DOA ine decet e Gute puerta 17 19 Position Pape suc porai tr sd afi acie ne shew eters abi or Mgr dh 20 Marking Saving and Using Waypoints 0 21 28 TracBack Navigation sss 29 30 Creating and Using Routes esses 31 36 Sounder Pages i e ibis pin I erae ep RR 37 40 Map Plotting Zooming and Cursor Movement 41 43 Using the Compass and Highway Navigation Pages 44 46 Menu Page and Distance Sun Calculation 0 00 000 47 Tack Dog Set p iid ides eel peperere Manca 41 48 Interface Setup and DGPS Interface 0 000 eee ee 49 51 System SEUD s ecu surculus dire Cate te UERUR E wap nupta 51 52 Navigation Setup 0 Ree 53 55 Map Page Setup 0 cece 55 56 Alarms SetiD cups esee t hme quent aaa Gea Tee 57 Sounder Setups uo ene eben ett auth Ratna 58 61 Navigation Simulator sees 62 63 Appendix A Installation eese 64 69 Appendix B Wiring and Specifications 0 0 04 70 71 Appendix C Messages and Time Offsets 0 0 72 73 Appendix D Map Datums 00 0000 n 74 16 Appendix E Index ssssssssss eee ee 77 78 The GPS 125 Sounder is a powerful navigation tool that can guide you any where in the world To better understand its operation and capabilities it may be helpful
44. atellite Page shows satellite positions and signal strength Satellite positions are shown using a birds eye view display Signal strength bars are shown for each satellite in use Satellite status and estimated position error EPE are shown in the upper corners Position Page The Position Page shows you where you are what direction you re heading and how fast you re going The top of the page contains a compass tape which is a graphic representation of your heading Your track and speed are indicated immediately below with the digital depth displayed at the bottom of the page The graphic compass tape reflects your head ing only while you are moving The rest of the page shows your current position in three dimensions latitude longitude and altitude A trip odometer and 12 24 hour clock are also provided Sounder Page The Sounder Page gives a view of the water beneath your boat while displaying sonar contacts and bottom contour Map Page The Map Page acts as a window that allows you to view your position the path you have traveled over and nearby waypoints A diamond icon in the center of the screen represents your present position As you move you will see a thin line called a track log appear along the path you have just covered Names of stored waypoints can also be shown on the map The bottom corners of the page will always display your current track and speed with the digital depth shown in the ce
45. boat according to the instruc tions in Appendix A To turn the GPS 125 Sounder on 1 Press and hold until the receiver turns on The welcome page will be displayed while the unit conducts a self test Once testing is complete the welcome page will be replaced by the status page with the EZinit prompt ready for you to select one of two initialization methods Select Country allows you to initialize the eceiver by selecting your present position from a ist of countries in the GPS 125 Sounders internal database This usually provides a position fix in a ew minutes AutoLocate allows the GPS 125 Sounder to initialize itself and calculate a position fix without lt nowing your present position This usually pro vides a position fix in 7 5 15 minutes If the EZinit prompt has not automatically appeared on the Satellite Page 1 Press the key Note If the EZinit prompt appears at any time after you have initialized the receiver because satellite sig nals are being obstructed by trees etc highlight No Re Init with the arrow keypad and press ENTER To initialize the receiver 1 If the country option is not highlighted press the w key repeatedly to move the field highlight to the coun try option and press the EB key 2 Use the w key to scroll through the list options until the country of your present position appears 3 Use to highlight the country state region you re
46. but has not collected enough data to calculate a 2D fix 2D Nav 2D Navigation at least three satellites with good geometry have been locked onto and a 2 dimensional position fix latitude and longitude is being calculated 2D Diff will appear when you are receiving DGPS corrections in 2D mode 3D Nav 3D Navigation at least four satellites with good geometry have been locked onto and your position is now being calculated in latitude longitude and altitude 3D Diff will appear when you are receiving DGPS corrections in 3D mode Poor Cvrg Poor GPS Coverage the receiver is no longer tracking enough satellites for a 2D or 3D fix Not Usable the receiver is unusable possibly due to incorrect initialization or abnormal satellite conditions Turn the unit off and back on to reset SIM Simulating Navigation the receiver is in simulator mode EZinit Option Prompt The Satellite Page also provides access to the EZinit prompt whenever a position fix has not been calculated the unit must be in searching AutoLocate acquiring simulator or poor coverage status This allows you to manually reinitialize the unit see pg 6 7 for instruc tions and is useful if you have traveled over 500 miles with the receiver off and you know it must be initial ized to your new position the GPS 125 Sounder will automatically offer the EZinit prompt after 10 minutes of unsuccessful satellite a
47. character positions as needed Only the first character match is listed for each character set 5 Once you ve found the desired waypoint press Giga REFERENCE Editing and Scanning Waypoints DELETE HR FHT HARHIWG FISH 7 will be deleted Are vou sure EET or Ho A warning page will ash you for confirmation to delete the selected waypoint Note If a waypoint is part of a route you will need to remove it from the route before it can be deleted See pg 36 HA POLHT HRHE HOCE H 33700 og W 34 33 76S SLIF 412A ERG D85 0 138 REMAHE MEH DELETE DOME Waypoint names will appear alphabetically when scanning waypoints If two waypoints begin with the same letter s you must move the cursor to the first letter they do not have in common for them to appear 21 REFERENCE Starting Stopping a GOTO amp MOB 20T HRYPOTHT Bas Bia Bina BRUSH CANCEL GOTO Select a destination way point from the GOTO way point list ERG DST 198 0 168 198 270 05 TRE ZPD Once the MOB mode has been activated steering guidance will be provided by the Highway or Compass Page Activating another MOB will replace the previ ous MOB waypoint 28 Selecting a GOTO Destination The GPS 125 Sounder provides four ways to navi gate to a destination GOTO MOB TracBack and route navigation The most basic method of selecting a desti nation is the GO
48. cquisition REFERENCE Receiver Status EZinit O2040T1i5i92b2T__ A POOR CVRG status will appear on the Satellite Page if the receiver has lost the satellites required to compute a fix Make sure the external antenna is not covered and is connected to the GPS 125 Sounder AUTOLOCATE 3 HO RKE IHIT CONTINUE ACQUIRING TIT If you travel more than 500 miles with the receiver off reinitialize the unit to your new position by using the EZinit feature To access EZinit press ENTER from the Satellite Page before any satellites are acquired 19 REFERENCE Backlighting amp Position Page Ads HM uis oao TRACK SPEED o11 16 05 TRIF ALT B 5m 10815 FOSITIOH H 36 42 073 W r4 23 032 12 12 53pm OFT 42 The speed and trach dis played on the Position Page may fluxuate at slow speeds or when you re standing still because of position errors caused by Selective Availability Big 3d5 nis TRACK SPEED 358 0 0 TRIF ALT mo oh 10815 FOSITIOH H 33 00 O00 W ss n OO 22 10 41 DFT 595 To reset the trip odometer highlight the trip field and press ENTER Use the LEFT arrow key to clear the distance field and press ENTER to confirm 20 Screen Backlighting The GPS 125 Sounder features three levels of back lighting Activate the backlight by pressing the POWER key briefly Each press of the button advances the back lighting to the
49. dditional infor mation will be displayed when required for the select ed interface option Above the None NMEA option will allow input of NMEA ver sions and a baud rate INTERFACE GRMH GEMH REQUEST WPT RECEIVING WPT dof 10 PACKETS Choose a HOST field based upon the type of information transfer you want to occur between the two interfacing devices 49 REFERENCE DGPS Interface The last two format settings allow the differential ready GPS 125 Sounder to accept RTCM DGPS correc DGPS Interface tions in RTCM 104 version 2 0 format Using DGPS corrections will improve receiver accuracy to 5 10 meters regardless of errors induced by the governments Selective Availability SA program The RTCM NONE format will allow connection to any manually tuned INTERFAGE beacon receiver by using the proper output interface RICM HOME The baud rate is selectable from the GPS 125 Sounder 1200 baud The RTCM NMEA selection controls the GARMIN EERCOH REGIR GBR 21 differential beacon receiver Once a RTCM set FREQ 304 OKHz ting has been selected the GPS 125 Sounder will either RATE l lbps automatically try to tune the last frequency and bit rate DIST 2 2 8 you selected or will switch to the default frequency of mE dE 304 0 kHz with a bit rate of 100 bps if no previous bea Tuning con has been tuned You may also enter your own fre quency and bit rate if desired The selectable
50. e exciting world of GARMIN GPS The GPS 125 Sounder represents GARMINS continuing commitment to provide marine users wi gation information in a versatile user fri they will enjoy for years to come To get of your GPS receiver be sure to read th th quality navi endly design the most out ough the ini tialization and Getting Started sections of this manual and refer to the reference section for co plete details on the GPS 125 Sounders advanced fea Initializing Your GPS for First Time Use ures The first time you power up your new GPS 125 Sounder is an important step in getting ble future GPS performance he best possi Because a GPS receiver can only receive signals from satellites above the horizon it needs to know what satellites to look for at any given ti an almanac a timetable of satellite num orbits stored in the receivers memory t me By using bers and their e GPS 125 Sounder can determine the distance and position of any GPS satellite and then use this information to determine your position To obtain this almanac data your GPS receiver needs to be initialized or given the opportunity to find itself the very first time it is turned on Once you have initialized the unit the GPS 125 Sounder will compute future fixes more rapidly usually in a few minutes Remember that initializing the unit is only neces sary under the follow
51. e minute away from the destination based on your current speed and track over the ground the GPS 125 Sounder will alert you with a flashing on screen message box Menu Page The GPS 125 Sounder Menu Page provides access to submenu pages used to select and customize opera tion and navigation setup The 11 submenus are divid ed into categories by function See pg 21 36 for dis cussion of waypoint and route management submenus We ll now address the rest of the submenus in the order they appear on the Menu Page To select a submenu page from the Menu Page 1 Highlight the submenu page you want to view 2 Press the key to display the submenu page 3 To return to the Menu Page press the key Distance and Sun Calculation The distance and sun calculation page will give you the distance and bearing between any two waypoints and will calculate the sunrise and sunset in local time at a destination waypoint for a particular date To perform a distance and sun calculation 1 Highlight the FROM field and enter the desired way point Press to move to the next field 2 Highlight the TO field and enter the destination way point Press the key to calculate the range and bearing to the destination waypoint 3 Highlight DATE and enter the date for your destina tion Press to display the sun information Track Log Setup Page The track log setup page lets you manage the GPS 125 Sounders tr
52. ess to return to the previous window range Clearing a Cluttered Map Page Display After you ve used the GPS 125 Sounder for a few trips you may find that your map display has become a bit messy from keeping track of your every move For practice lets clean up the screen by clearing the track log the plot points left on the Map Page we ve just created during the Getting Started Tour 1 Press E or until the Menu Page appears 2 Use the V key to move the field highlight to the TRACK LOG option 3 Press to access the track log page 4 Press the 4 amp key twice to highlight the CLEAR LOG option The clear log confirmation page will appear 5 Use the key to highlight the Yes prompt 6 Press Gg to finish Turning the Receiver Off You ve now gone through the basic operation of your new GPS receiver and probably know a little more than you think about how it works We encourage you to experiment with the GPS 125 Sounder until it becomes an extension of your own navigation skills If you encounter any problems using the unit or want to take advantage of the GPS 125 Sounders more advanced features refer to the reference section To turn the GPS 125 Sounder off 1 Press and hold the EBB key for 3 seconds GETTING STARTED Clearing the Map Page amp Power OFF TRACK LOG RECORD yes CRITERIA Automatic HEHORY USED 1 of TEZ points 073 CLEAR LOG TRACEACK Highlight
53. et alarm depth No DGPS Position Not enough data is available to compute a DGPS position No RTCM Input Beacon receiver is improperly connected or baud rates do not match Poor GPS Coverage The GPS 125 Sounder cannot acquire the necessary number of satellites to compute a position Try another location with a clearer view of the sky Power Down and Re init The GPS 125 Sounder is not able to calculate a position due to abnormal satellite conditions Turn the unit off and verify the last position shown by other means Try the unit again later possibly in a different location Read Only Mem has Failed The permanent memory has failed and the unit is not operable Take your unit to an authorized GARMIN dealer for repairs Received an Invalid WPT A waypoint was received during upload transfer that has an invalid identifier Receiver has Failed A failure in receiver hardware has been detected If this message persists do not use the unit and take it to an authorized dealer for repair Route is Full You have attempted to add more than 30 waypoints to a route Route is not Empty You have attempted to copy into a route already in use Route Waypoint Can t be Deleted The waypoint you are trying to delete is part of a route Delete the waypoint from the route before removing it from memory Route Waypoint was Deleted A route waypoint entered does not exist in the database and has been deleted from the route RTCM Inpu
54. eys to select letters numbers or menu options and use the LEFT and RIGHT keys to move the cursor forward or backward along the line IFT TRK oF Bob B2 d The Map Page displays your present position as a diamond icon and provides a real time graphic bread crumb display of your track right on the screen n Position Map Pages and GOTO CHRNHL n 4 DET SFD sd 4 The moving maps default screen orientation is track up orientation Track up means that your current direction of travel is always up or towards the top of the screen It can also be set for north up or desired track orientation through the map setup page GOTO HRYFOIHT CHAHHLE DOCK GARMIH CANCEL GOTO The GOTO waypoint page allows you to select a desti nation from a list of all available waypoints in the GPS 125 Sounders memory 12 Using the Position and Map Pages continued Now let s change the display to the Map Page and watch the track log of our tour 1 Press ERE to change from the Position Page to the Map Page Your current position is shown as the diamond in the middle of the screen The dark circle below the dia mond represents the position you created with the line between the two showing your track 1 Once you have reached an area that allows for gener al changes in direction without interfering in the pas sage of other boats mark your current position again and
55. he direction the highway leads left or right until the highway leads straight up the page FRESS FAGE Once you are one minute from the destination based on your present speed and course an arrival message will appear on the message page 13 GETTING STARTED Highway Sounder Page amp Cancelling GOTO CHAHHL 270 0 207 ERG DST TRE sPD 270 4 0 OFT OF The 125 Sounder will also provide steering guidance with a graphic Compass Page To change the display from the Highway Page press ENTER twice GOTO HAYFOIHT CHAHHL DOCK GARMIN Once a GOTO is activated the GPS 125 Sounder pro vides steering guidance until the GOTO is canceled To cancel a GOTO high light the cancel prompt at the bottom of the page and press ENTER 14 Using the Highway Page continued While navigating you may use the Compass Page see picture below left instead of the Highway Page To select the Compass Page 1 While viewing the Highway Page press twice The Compass Page will now become the displayed navigation page This page provides a directional point er to your destination by using a compass display to show direction of travel This provides better steering guidance at slower speeds for travel with many direc tional changes To return to the Highway Page press ENTER twice Cancelling a GOTO If you decide to stop navigating to the active way point waypoint all
56. heast Base Porto Santo and Madiera Islands Southwest Base Faial Graciosa Pico Sao Jorge A and Terceira Islands Azores Timbalai 1948 Brunei and E Malaysia Sarawak and Sabah Tokyo Japan Korea Okinawa Tristan Astro 1968 Tristan da Cunha Viti Levu 1916 Viti Levw Fiji Islands Wake Eniwetok Marshall Isl World Geodetic System 1972 World Geodetic System 1984 Zanderij Surinam A Almanac Data 000005 2 Alarms Setup ceeere rere E oY 57 B Backlighting esee yeaa ss 9 Bearing BRG 0 000 2 C Cancelling a GOTO 14 28 CDI Scale Settings 00 53 Compass Page 0220000 9 Connecting the Power Data Cable 70 Course Made Good CMG 2 Crosstrack Error XTE oaaao aaa 2 D Date and Time Setup 52 Desired Track DTK 2 DGPS T t rface iecore pr tu 50 Differential GPS DGPS 2 Distance and Sun Calculation 47 E Estimated Time Enroute ETE 2 Estimated Time of Arrival ETA 2 RADU 2 cte visse pet Pd 6 G Getting Started Tour 20 00 2020 T GIOSSATY 225 omes ae ea a yd wb shaw 2 Ground Speed SOG suus 2 H Highway Page 20 0 2 eee 9 I Initialization Troubleshooting T Initializing the Receiver 5 6 Installation o into wires ns alee e hae 64 Interface Options 0 004 49
57. icular installation If this equipment does cause harmful interference to other equipment which can be determined by turning the equipment off and on the user is encouraged to try and correct the interference by relocating the equipment or connecting the equipment to a different circuit than the affected equipment Consult an authorized dealer or other qualified service technician for additional help if these remedies do not correct the problem Operation is subject to the following conditions 1 This device cannot cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation The GPS 125 Sounder does not contain any user serviceable parts Repairs should only be made by an authorized service center Unauthorized repairs or modifications could void your warranty and your authority to operate this device under Part 15 regulations INTRODUCTION Table of Contents SECTION ONE Introduction Glossary Navigation Basics eese 2 4 SECTION TWO Getting Started Turning On and Initializing the Receiver 00 5 7 Primary Page OVerVieW esee c eden dade epi e ae 8 9 Marking a Waypoint 2 0 6 10 Position Page and Map Basics 0 0 eee cee eee 11 12 Going to Waypoift e ew ieee peek Oden eee peg 12 Using the Highway Page and Cancelling a GOTO 13 14 Using The Sounder Page peii corsie aii
58. ile you navigate Bearing to Distance to Waypoint Waypoint Present Position Track Over TER DET SFO Speed Over Ground gt 004 56 10 0 Ground Digital Depth The map contains 12 selectable range scales from 0 2 to 320 miles 0 5 to 600 km The scale represents the distance shown from the top of the screen to the bottom Move from scale to scale by using the dedicat ed zoom keys IN and OUT Press IN for a smaller scale map and press OUT for a larger scale map A diamond icon in the center of the page represents your present position with your track and or route dis played as a solid line Nearby waypoints are shown as squares with the corresponding name listed You may select which items are shown through the map setup submenu page see pg 56 for more information The four corners of the Map Page are used to dis play various navigation data including the bearing and distance to a destination waypoint and your current rack and speed over the ground The two fields at the op corners of the map show your bearing and distance o one of three selectable destinations an active desti nation waypoint a highlighted on screen waypoint or he panning target crosshair If you are not navigating o a waypoint or using the panning function the top data fields will not be displayed The bottom corners of he display always show your current track and speed with the digital depth shown in the center
59. indicates that you are traveling in a southeast 139 degrees and the destination waypoint is due east 109 degrees of your current direction of travel 46 Using the Compass Page The GPS 125 Sounders Compass Page provides graphic steering guidance to a destination waypoint The bearing BRG and distance DST to the waypoint are displayed at the top of the page below the destina tion waypoint field The distance displayed is always the straight line distance from your present position to the destination waypoint The bearing indicates the exact compass heading from you to the destination Destination Bearing to Waypoint Waypoint gt 111 0 MCN Distance to rapme Waypoint Compass Pointer to Waypoint T TRE SFO Track Over 111 11 05 Speed Over Ground F Ground nFT E Digital Depth The middle of the page features a rotating compass ring that shows your current heading while you re mov ing track up with a pointer arrow to the destination dis played in the center The arrow shows the direction of your destination from the direction you are moving If the arrow points up you are going directly to the waypoint If the arrow points any other direction left right down etc turn toward the arrow until it points up and then continue in that direction The bottom of the Compass Page shows your current track TRK speed SPD over the ground and digital depth DPT When you are on
60. ing conditions First time use from the factory If the receiver has been moved off If the receivers memory has be all stored data has been lost over 500 miles rom the last calculated position with power en cleared and GETTING SOFTHARE 2 03 COPYRIGHT 1357 GREHIH CORF Welcome Page The welcome page will appear as soon as the GPS 125 Sounder is turned on and remain on while the unit conducts a brief self test FROH LIST AUTOLOCATE 3 HO RE IHIT CONTINUE ACQUIRING 021113915262T__ _ The EZinit prompt will automatically appear if the receiver needs to be initial ized The prompt may also appear during normal use if the antenna is shaded COUNTRY LIST US AEM USH MH USA Mo USR HS USA MT USA HC USA HE USA HE USA HH USA HJ Use the arrow keypad to highlight the country region or state of your pre sent position from the list and press ENTER If the country is not listed select the closest country instead Initializing the Receiver The receiver is shipped from the factory in AutoLocate mode which enables the GPS 125 Sounder to determine its location anywhere in the world To speed up the initialization process we recom mend using EZinit described below which will usually provide a fix in a few minutes Before you initialize make sure your GPS 125 Sounder unit antenna and transducer have been cor rectly installed on your
61. ing modes are accessed through the system setup submenu 51 REFERENCE Setting Time Screen Contrast amp Tone ZYETEH SETUF HODE Sounder Onl DATE 13 FEB 37 TIHE 03 38 27 pm OFFSET f 1 00 HOURS 12 CONTRAST mum TOHE MSG Key To display the correct local time you must enter the appropriate offset from the chart at the end of Appendix C SYSTEM SETUF HODE Sounder Onl DATE 13 FEB 37 TIHE 03 38 46pm OFFSET 11 00 HOURS 12 CONTRAST i TOHE HSG kes Screen contrast may be adjusted with the contrast bar Date and Time Setup The date and time field is located directly below the mode field Because the time shown is UTC time you will need to enter a time offset to display the correct local time for your area To determine the time offset for your area note your position and refer to the chart in Appendix C To enter the time offset 1 Highlight the OFFSET field and press the key 2 Enter the time offset and press EB Remember to select a positive or negative indicator for your offset Time Format The time display shown on the system setup and Position Pages may be set to display the time in a 12 or 24 hour format To select the time format 1 Highlight the HOURS field and press the key 2 Select 12 or 24 hour display and press EIE to confirm Screen Contrast The GPS 125 Sounder has adjustable screen con trast that is controlled
62. ion page 4 To return to the Menu Page press EB The route number field is displayed at the top of the page with a 16 character user comment below If no user comment is entered the field will display the first and last waypoint in the route The waypoint list in the middle of the page accepts up to 30 waypoints for each route with fields for desired track and distance between legs The total distance of the route is indicated below the waypoint list The bottom of the route definition page features several function fields which let you copy clear invert or activate the displayed route Routes 1 19 are used as storage routes with route 0 always serving as the active route you are navigating If you want to save a route currently in route 0 be sure to copy it to another open route as it will be overwritten by the next route activation To create a route from the route definition page 1 Highlight the route number field and press gl 2 Enter a route number and press the key to con firm 3 Press to begin entry of a route comment Note that the default first and last waypoint comment will only appear if the comment field is blank 4 Enter your comment and press the key 5 Highlight the No 1 waypoint field and press IE 6 Enter the first waypoint of your route and press CIE 1 Continue entering the rest of your waypoints in order using the key to start and confirm each field entry The list wi
63. ion and display your present position 1 Press the key Using the Cursor to Mark and Go to Waypoints During panning the crosshair represents a target position right on the moving map with the range and bearing to the target displayed at the top corners of the screen You can also use the target crosshair to mark a new waypoint position or as a GOTO destination right from the map field To mark the target crosshair position as a new waypoint 1 Press the key to capture the position 2 Enter a new name and route number and press Eg You can also use the target crosshair as an instant GOTO destination This function will mark and instantly set a course for a new waypoint called MAP To GOTO the target crosshair 1 Press the key to capture the position 2 Press the key to confirm the MAP GOTO To save the MAP waypoint rename it as it will be overwritten the next time a map GOTO is executed REFERENCE Using the Cursor on the Map HAF POSITION Was paint oo1 H 3 40 713 W d5 58 304 Add to route number To mark a waypoint with the crosshair simply pan to the desired position and press the ENTER key GOTO HAYFOIHT DAM DRP FF FISH CANCEL GOTO The crosshair may also be used to define a GOTO des tination by panning to the desired position and press ing the GOTO key To save the MAP waypoint rename it as it will be overwritten by the next MAP waypoint
64. ired alarm and press EI The on off setting will be highlighted 2 Use the arrow keypad to select ON or OFF and press G38 The highlight will move to the value field 3 Enter the desired value using the arrow keypad and press Gig REFERENCE Keel Offset amp Sounder Alarms SQUHDER SETUF SENSTINTY CHART SFO 100 HHITELIHE E RNG HODE AUTO FISH ID FISH HOISE RE AUTO UHIT FEET KEEL 08 0 ALARHS SHAL OFF 20 0 DEEF OFF i00 0 FISH OFF ALL Use the keel offset to cus tomize the point used to measure depth SQUHDER SETIF SEMSTINTY 5O CHART SFO 100 HHITELIHE E RHG HODE AUTO FISH ID OFF HOISE REJ AUTO UMITS FEET KEEL 0 50 ALARHS zHHL H 20 0 DEEF OFF 1020 0 FISH OFF ALL The alarms can be set to activate at a specified shal low and deep water depth and when any sonar targets appear 61 REFERENCE Nav Simulator Navigation Simulator The GPS 125 Sounders simulator mode lets you practice all aspects of operation without actually track ing satellites You can also plan and practice trips enter new waypoints and routes and save them for use dur ing normal operation The simulator is activated from the system setup page with speed and heading con trolled from the Position Compass or Highway Pages SYSTEM SETUF HODE Bimulator DATE 13 FEB 37 TIHE 03 52 55 pm OFFSET 11 00 HOURS 12 CONTRAST TOHE MSG Key To activate
65. iteline amp Fish ID The whiteline may be adjusted from 0 off to 100 The default setting is 5 ESQUHDER SETIF SEHSTIUTY CHART SFO 100 HHITELIHE E RHG HODE AUTO FISH ID WFF HOISE REJ AUTO UMITS FEET KEEL 0 50 ALARHS SHAL OFF 20 0 DEEF OFF i00 0 FISH OFF ALL The OFF setting is the Fish ID default and will show sonar targets as arches 59 REFERENCE Noise Rejection amp Depth Units ESQUHDER SETUF SEHETIUTY CHART SFO 100 HHITELIHE E RNG HODE AUTO FISH ID OFF HOISE REJ MUTO UMITS FEET KEEL 0 5 ALARHS SHAL OFF 20 0 DEEF OFF 100 0 FISH OFF ALL Use the noise rejection fea ture to minimize interfer ence from nearby electronics ESQUHDER SETUF SEHZTIUTY7 5O CHART SFO 100 HHITELIHE E RHG HODE AUTO FISH ID OFF HOISE REJ AUTO UHITS METERS KEEL 0 0 Choose a desired unit of measurement from feet meters or fathoms ID Setting FISH ID Setting ON The above examples illustrate the difference between having Fish ID set to FISH versus ON The most information is available with the ON setting Noise Rejection The noise rejection setting determines how much the unit screens out electronic interference from nearby equipment The Auto setting is the default and will turn noise rejection on and off as needed To set noise rejection 1 Highlight the NOISE REJ field and press GJ The AUTO ON
66. just above the bottom GARMINS exclusive See Thru technology will allow you to distinguish sonar tar gets from bottom clutter and thermoclines The area of strongest sonar return whiteline is displayed as a mix of light and dark checkering Typically the bottom will be the primary source of the whiteline A thin whiteline indicates a softer bottom while a thicker 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 bot tom contour along with any significant objects lying on the bottom Along the left side of the screen typi cally is an adjustable scale which shows the current displays range of depth The GPS 125 Sounder uses Depth Controlled Gain DCG to give you the max imum amount of informa tion possible with minimal Range Modes M distortion The GPS 125 Sounder uses two range modes auto and manual Auto displays the most information pos sible while continuously displaying the bottom Manual lets you select the displayed range You may switch between auto and manual modes by using the I 37 arrow keypad or by using the sounder setup menu REFERENCE Range Modes amp Underwater Waypoints FAUSE Si 15 176 0 078 Use the target cursor to mark the desired underwa ter location Note The bearing and range shown are to the cur sor s location from your pre sent position SOUNDER F
67. ll automatically scroll down 8 After you have entered all your waypoints press c Copying and Clearing Routes The route definition page is also used to copy a route to another route number This feature is useful when you make changes to the active or TracBack route and want to save the route for future use To copy a route 1 Highlight the route number field and press El 2 Enter the route number to be copied and press Eg 3 Highlight the COPY TO field and press GRD 4 Scroll through the available routes and select a desti nation route number Only open routes will be avail able as choices Press the key to copy the route 5 Press the key to return to the Menu Page To clear a route from memory 1 Highlight the route number field and press GR 2 Enter the route number and press Cg 3 Select the CLR prompt and press CJ REFERENCE Creating Copying amp Clearing Routes ROUTE 1z COFY TO CLR IHU ACT Enter each waypoint in the order you would like to nav igate them If you enter a waypoint not stored in memory youll need to define the position on the waypoint definition page ROUTE 4 DOGH To DRFOFF MO HHYFMT DTH 1 Dock TOTAL IST 14 1 coFY To El CLR IHU ACT To copy a route select an open storage route and press the ENTER key If you select a route that is already used you ll be alerted with a Route Full Message 33 REFERENCE
68. lly adjusting the range The zoom window may be moved at any time by using the arrow keypad To save a zoom window range in Auto 1 Press the keypad up to view a shallower range or down to view a deeper range The range scale on the left side of the zoomed picture will be highlighted 2 When the window reaches the desired range press to accept A Change To Manual Range window will appear Highlight Yes and press G2 3 If you do not want to save the range highlight No and press GI You may then resume manually moving the zoom window 4 Press at any time to return to an auto range mode display To save a zoom window range in Manual 1 Press the keypad up to view a shallower range or down to view a deeper range The range scale on the left side of the zoomed picture will be highlighted 2 When the window reaches the desired range press to accept 3 If you do not want to save the range press to return to the previous window range Sounder Setup The sounder displays can be customized to fit your needs from the sounder setup submenu accessed from the Menu Page See pg 58 61 Map Page The GPS 125 Sounder features a real time moving ap that can do much more than just plot your course and route The Map Page also provides you with a tar get cursor that will let you pan ahead to nearby way points determine the distance and bearing to any map position and mark new waypoints wh
69. ltitude field is highlighted and press Gig 2 Use the arrow keypad to enter the altitude and press ENTER Marking and Saving Waypoints Knowing your present position is only part of any navigation equation You also need to keep track of where you ve been and where you are going Waypoints serve as electronic markers that let you keep track of starting points destinations navaids and any other important position The GPS 125 Sounder allows you to mark store and use up to 250 waypoints A waypoint position can be entered by taking an instant electronic fix by manu ally entering coordinates or by entering range and bearing in reference to an existing waypoint If you try to mark a waypoint without having a position fix you ll be notified with a No GPS Position message To mark your present position 1 Press the key to capture your position The mark position page will appear showing the captured position and a default 3 digit waypoint name To change the default position name 1 Press the w key once to move the field highlight from the SAVE field to the name field 2 Press to clear any existing data and begin entry of the name 3 Use the arrow keypad to enter the name 4 Press to confirm the waypoint name The field highlight will move to the comment field If you d like to add this waypoint to a route 1 Press w once to highlight the route field and press the key 2 Usethe or keys t
70. nd press Gg Interface Setup The interface setup page lets you specify the inter facing formats for connecting external devices There are five interface options GRMN GRMN None None None NMEA RTCM None and RTCM NMEA Each option lists the input format first followed by the out put format To select I O format 1 Highlight the 1 0 field and press ERES 2 Usethe a and w keys to toggle through and select the desired setting and press The GRMN GRMN setting is a proprietary format that lets you exchange information such as waypoints routes and track logs between two GARMIN GPS devices or a PC During data transfer the number of packets being exchanged will be displayed on screen To select a transfer option 1 Highlight the HOST field and press CIE 2 Use and W to select a setting and press CEg To disable all interfacing capabilities select the None None setting If you want to output NMEA data to compatible external devices without any differential input capability select the None NMEA setting Once a NMEA output setting has been selected with or with out RTCM input the NMEA field will become high lighted NMEA formats 0180 0182 or 0183 1 5 or 2 0 are available To select a NMEA format 1 Press to begin a NMEA selection 2 Use and w to select a format and press CIE REFERENCE Interface Options INTERFACE HOWE HMEA HMEA 0183 2 0 4800 baud A field for a
71. next level and then turns it off Backlighting will remain on until turned off Position Page The GPS 125 Sounder Position Page shows you where you are the direction you are heading and your speed up to 99 9 mph and is most useful when you are traveling without an active destination waypoint A compass tape at the top of the page displays your cardi nal heading while moving with current track and speed over the ground indicated below The rest of the page shows your present position in three dimensions latitude longitude and altitude The units of measure for speed distance position and altitude are user selec table through the navigation setup menu see pg 53 The 12 24 hour clock and time offset options are avail able from the system setup menu see pg 52 Trip Odometer The Position Page also features a resettable trip odometer to measure your total distance traveled To reset the trip odometer 1 Press the wr key until the trip field is highlighted 2 Press E followed by 4 3 Press GRD to finish Altitude Display When the GPS 125 Sounder is acquiring satellites or navigating in the 2D mode the last known altitude will be used to compute your position If the altitude shown is off by several hundred feet you can manually enter your altitude for greater accuracy Note that GPS alti tudes can fluxuate due to errors To enter an altitude 1 Press the wr key until the a
72. nter If you are navigating to a way point highlighting an on screen waypoint or panning he cursor the corresponding distance and bearing will be shown at the top corners Navigation Page A navigation page gives you directional guidance when going to a waypoint The GPS 125 Sounder has wo navigation page choices the Highway Page or the Compass Page The Highway Page is the default and will be briefly explained here The Compass Page is covered on pg 46 The Highway Page uses a graphic highway to show your movement in relation to your desired course The upper section shows bearing and distance o the waypoint and your current track and speed The iddle portion contains the actual highway The bot om of the page contains the estimated time enroute ETE and your velocity made good VMG Menu Page The last primary page is the Menu Page The Menu Page gives you access to the GPS 125 Sounders waypoint management route track log and setup fea ures through a list of submenus Screen Backlighting The GPS 125 Sounder features three levels of back lighting Activate the backlight by pressing the POWER key briefly Each press of the button advances the back lighting to the next level and then turns it off Backlighting will remain on until turned off GETTING STARTED Primary Pages amp Backlighting Map Page The Map Page shows your progress on a moving map plotter and gives a birds e
73. nts currently stored in the GPS 125 Sounder The total number of used and empty waypoints is indicated above the waypoint list From he waypoint list page you can retrieve a waypoint def inition page delete all user defined waypoints or go to a selected waypoint If a waypoint is currently used in a oute the lowest route number will be indicated to the eft of the waypoint name To review the waypoint definition page of a high lighted list waypoint 1 Press the key To return to the waypoint list page ensure DONE is highlighted 1 Press the key To go to a list waypoint 1 Use the 4 amp and w keys to scroll through the list and select a waypoint 2 To select a highlighted waypoint as a destination press the key 3 Once the GOTO waypoint page appears press the key to confirm the selected waypoint as your destination To delete all user defined waypoints 1 Use the or w keys to move the cursor high light to the DEL ALL WPTS field 2 Press the key A warning page will appear asking if you are sure you want to delete all user defined waypoints and routes If you want to continue and delete 1 Press the key to highlight the Yes field 2 Press the key 3 Press the key to return to the Menu Page If you do not want to delete all waypoints 1 Highlight No and press QB REFERENCE Waypoint List Page HAYFOLTHT LIST Pdi EMFTY HUiED Bel Biz BES
74. o enter a route number and press EE 3 Press the key again to save the waypoint If you do not want to add this waypoint to a route 1 Highlight the SAVE field and press the key REFERENCE Marking amp Saving Waypoints GPS FOSITION Wat paint oo1 H 36 42 115 Word 29 032 DEFTH dd FT Add to route number SANE The GPS 125 Sounder will automatically name new waypoints with a default three digit name with the current digital depth as the default comment You may then highlight either field press ENTER and enter your own name or comment GPS FOZITIOH Was point 00i H 36 42 115 W r4 23 032 DEFTH dd FT Add to route number Ell SANE To add a waypoint to a route as you are marking its position enter the desired route number highlight SAVE and press ENTER 21 REFERENCE Nearest Waypoints Page HEHU HEAREST HFTZ HAYFOLTHT LIST HAYFOIHT ROUTES DIST AHD SUH TRACK LOG THTERFACE SYSTEM SETUF ALARHS SETUF SOUNDER SETUF To select a waypoint sub menu highlight the desired option and press ENTER HEAREST HFTS HRYPNT ERG Dock 3iT FISH i 045 FISH 2 O56 DRFOFF OBS FUEL 139 ERISH 12B I Ii m n Li Li oOo The compass heading BRG and distance DST to the nine nearest way points are updated continu ously Waypoint Submenus The GPS 125 Sounder has three waypoint submenu pages that let
75. o will continue to follow the bottom contour while zooming in Manual will show the selected depth To access the sounder zoom function 1 While viewing the Sounder Page press IB once The 2X screen will appear Note the current zoom scale will be displayed in the upper left corner of the screen 2 Press MIB once more to advance to the 4X screen 3 To deactivate the sounder zoom function press E once You may also press and hold until the original scale picture appears and a triple beep sounds Moving the Zoom Window You may move the displayed range on a zoomed screen at any time just as you would a non zoom screen by pressing the arrow keypad up or down This will move the zoom window If you prefer to keep the window in its new posi tion you will need to save the change Note Saving the new window position requires different steps if you are in Auto range when you move the window versus being in Manual when the window is moved REFERENCE Zoom Function amp Zoom Window Pressing the IN key once while on the Sounder Page activates the 2X Zoom The 4X zoom shows objects at 4 times magnification and 1 4 the original range scale 39 REFERENCE Zoom Window If you activate the zoom while in Auto range mode and then decide to manual ly adjust the range a mes sage window will appear Highlight Yes and press ENTER to activate Manual range mode and continue manua
76. or Island Guam Island NAD27 Canada orth American 1927 Gux 1 Astro Gux 1 Astro Canada and Guadalcanal Island ewfoundland Hjorsey 1955 Hjorsey 1955 Iceland NAD27 Canal Zone orth Am 1927 Canal Hong Kong 63 Hong Kong 63 Zone Hong Kong NAD27 Caribbn orth American 1927 Hu Tzu Shan Hu Tzu Shan Taiwan Caribbean Barbados Indian Bngldsh ndian Bangladesh Caicos Islands Cuba ndia Nepal Dom Rep Grand Indian Thailand ndian Thailand Cayman Jamaica Leeward and Turks Vietnam slands Indonesia 74 is OE 1a NAD27 Central orth American 1927 ee Central America Belize Ireland 1965 reland 1965 Ireland Costa Rica ISTS 073 Astro STS 073 ASTRO 69 El Salvador Guatemala Diego Garcia Honduras Nicaragua Johnston Island Johnston Island NAD27 CONUS orth Am 1927 Mean andawala Kandawala Value CONUS 3n Tana NAD27 Cuba orth American 1927 Kerguelen Islnd erguelen Island Cuba Kertau 1948 ertau 1948 West NAD27 Grnland orth American 1927 Malaysia Singapore Greenland L C 5 Astro Cayman Brac Island HayesPeninsula Liberia 1964 Liberia 1964 Liberia NAD27 Mexico American 1927 Luzon Mindanao Luzon Mindanao Island Mexico Luzon Philippine Luzon Philippines NAD27 San Sal orth American 1927 excluding Mindanao San Salvador Island sland NAD83 orth American 1983 Mahe 1971 Mahe 1971 Mahe Island Alaska Canada Central Marco Astro Marco Astro Salvage America CONUS sl and Mexico 75 APPENDIX D Map Datums
77. osition An exact unique location based on a geographic coordinate system Sensitivity A measure of how sensitive the sounder is to sonar echoes Speed Over Water SOW The speed you are traveling over the surface of the water Thermocline A layer of water separating warmer water above from cooler water below Track TRK The direction of movement relative to a ground position 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 your destination Waypoint A specific location saved in the receivers memory Whiteline A term applied to the checkered portion of the sonar display which shows the area of strongest sonar return typically the bottom INTRODUCTION Navigation Basics The GPS 125 Sounder provides steering guidance and navigation information using degrees a measurement mea sured in a clockwise direction from a north reference North is described as 000 east as 090 south as 180 and west as 270 The diagram and compass rose below provide a graphic illustration of the navigation terms used by the GPS 125 Sounder More information on basic navigation and GPS are available at your local library or bookstore oor ACTIVE TO WAYPOINT 4 ACTIVE FROM WAYPOINT Getting Started with Your GPS Welcome to th
78. ow the bottom contour along with any significant objects lying on the bottom Along the left side of the screen typically is an adjustable scale which shows the current displays range of depth Range Modes The GPS 125 Sounder uses two range modes auto and manual Auto displays the most information pos sible while continuously displaying the bottom Manual lets you select the displayed range You may switch between auto and manual modes by using the arrow keypad or by using the sounder setup menu To switch from auto to manual mode 1 Pressthe a or w keys until the desired depth range is displayed on the depth scale at the left side of the page 2 Press to confirm the selected range To switch from manual to auto mode 1 Press the arrow keypad up or down until a repeated beep sounds Auto will be shown in the iP at the top left corner of the screen and press Mill Underwater waypoints The underwater waypoint feature marks a way point5 position and its depth This makes it easier to find and use an object such as a stump for a future fishing location For instructions on marking an under water waypoint see pg 38 Sounder Zoom The sounder zoom function allows you to see the current display picture at 2 times 2X or 4 times 4X magnification 2X means that the screen displayed will now cover 1 2 the range you were originally viewing in twice the detail and 4X shows 1 4 the original range at four times
79. ralian Geod 66 Australia Tasmania Island Australian Geod 84 Australia Tasmania Island Efate and Erromango Islands Bermuda 1957 Bermuda Islands Bogata Observ Campo Inchspe Canton Ast 66 Cape Cape Canavrl Carthage CH 1903 Chatham 1971 Chua Astro Corrego Alegr Djakarta Dos 1968 Easter Isld 67 European 1950 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 Alegre Brazil Djakarta Batavia Sumatra Island Indonesia Dos 1968 Gizo Island ew Georgia Islands Easter Island 1967 European 1950 Austria Belgium Denmark Finland France Germany Gibraltar Greece Italy Luxembourg Netherlands Norway Portugal Spain Sweden Switzerland APPENDIX D Map Datums European 1979 European 1979 Austria Massawa Massawa Eritrea Finland Netherlands Ethiopia orway Spain Sweden Merchich Merchich Morocco Switzerland Midway Ast 61 Midway Astro 61 Finland Hayfrd Finland Hayford Midway Finland Minna Minna Nigeria Gandajika Base Gandajika Base Republic NAD27 Alaska orth American 1927 of Maldives Alaska Geod Datm 49 Geodetic Datum 49 NAD27 Bahamas orth American 1927 ew Zealand Bahamas excluding San Guam 1963 Guam 1963 Salvad
80. s and connect the power data antenna and transducer cables 69 APPENDIX B Connecting the power data cable The power data cable connects the GPS 125 Sounder Wiring amp system to a 12 18 volt DC power source and provides Specifications ness connections interface capabilities for connecting NMEA devices and an external alarm see below for interface operation details The diagram below indicates the appropriate har To connect the GPS 125 Sounder to a power source 1 Connect the RED harness lead to the positive side of a 12 18 volt DC power source Make sure the power lead has an in line 1 amp fuse installed 2 Connect the BLACK harness lead to a ground strip or the negative side of a 12 18 volt DC power source PIN 1 red 12 18 volts DC PIN 2 black Ground ra PIN 3 blue NMEA out PIN 4 brown NMEA in white No connection 12 18 volts DC Shield Grounded Through GPS Pin assignment PIN 6 green No connection Autopilot yellow alarm low NMEA Device GBR 21 Beacon Receiver Alarm Relay To connect an external alarm connect the ground side of the alarm device to the YELLOW harness lead 100 mA DC load max The following interface formats are sup ported by the GPS 125 Sounder for driving three NMEA devices NMEA 0180 NMEA 0182 NME
81. s highlighted 2 Press GUD 3 Enter the name of your new waypoint 4 Press the key to confirm the waypoint name The position field will now become highlighted with the receiver s last known position shown 5 Press w to move the cursor to the reference field 6 Press to begin entry of the reference waypoint 7 Use the arrow keypad to enter the waypoint name 8 Press the key to confirm your entry 9 Enter the bearing and distance of your new waypoint from the reference waypoint Remember to use the key to begin entry and confirm each field The coordinates will be calculated and saved for your new waypoint 10 Press the key with the DONE field highlight ed to return to the Menu Page REFERENCE Reference Waypoints HRYFOIHT MAKE DOCK H 33 00 Oo W ua4 33 763 SLIF 412A ERG o36 Mo om REHAHE MEH DELETE DOME The GPS 125 Sounders advanced waypoint and planning features allow you to create new waypoints and practice navigation without ever leaving the slip If you create a new way point by entering coordi nates from a map you may want to re mark the way point s exact position once you get there To re define an existing waypoint s posi tion coordinates from the waypoint definition page simply highlight the DST field and press ENTER Use the LEFT arrow key to set the distance to 0 00 and press ENTER to confirm The old coordinates will be replaced by
82. s in track To enter a value for the speed filter 1 Highlight the SPEED FILTER field and press GBD 2 Select the ON option and press EJ 3 Highlight the speed value field and press GR 4 Select the desired number of seconds and press Gay f REFERENCE Magnetic Heading Reference The GPS 125 Sounders heading information can be displayed referencing magnetic north auto or user Magnetic defined true north or calculated grid headings The Heading amp Map default setting is automatic magnetic north which is Setup suitable for most applications HAU SETUF FOZITIOH FRHT hdd mm mmm HRF DRTUH Was 84 CDI 20 25 HAN SETIF FOZITIOH FRHT hddd mm mmm HAF DRTUH WGS 84 CDI 0 25 UNITE Hautical SPEED FILTER On z SEG HEADING User Haa EOOE UNITE Hautical SPEED FILTER On 2 SEC HEADING Brue To select a heading reference To entera idee 1 Highlight the HEADING field and press Gg magnetic variation select the User Mag option and 2 Select the desired heading preference enter the desired direction and value 3 Press the key to confirm the selection To enter a user defined magnetic heading i pie HAF SETUP 1 Select the USER MAG option and press Gay guemmuom orth Up 2 Use the and w keys to enter the degrees PLOTTED ITEHS and direction of magnetic variation RINGS Ho ROUTE Wes 3 Press the key to confirm the magnetic HEAR
83. sing the GARMIN GPS 125 Sounder We hope it will help you meet all of your navigation and fishfinding needs The GPS system is operated by the government of the United States 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 GPS 125 Sounder is a precision electronic NAVigation AID NAVAID any NAVAID can be misused or misinterpreted and therefore become unsafe Use the GPS 125 Sounder at your own risk To reduce the risk of unsafe operation carefully review and understand all aspects of this Operators Manual and thoroughly practice operation using the simulator mode prior to actual use When in actual use carefully compare indications from the GPS 125 Sounder to all available navigation sources including the information from other NAVAIDS visual sightings maps etc For safety always resolve any discrepancies before continuing navigation NOTE This device meets requirements for Part 15 of the FCC limits for Class B digital devices for home or office use It has been tested for compli ance with all necessary FCC standards This equipment generates uses and can radiate radio frequency energy and if not installed and used in accor dance with the instructions may cause harmful interference to radio commu nications However there is no guarantee that interference will not occur in a part
84. speed is shown and press B Whiteline You may select how the area of strongest sonar return is shown through the whiteline setting A high setting will cause a thick whiteline while low settings show a thin whiteline To adjust the whiteline 1 Highlight WHITELINE and press Gig The Sounder Page will appear with WTLN and a value displayed in the upper left corner of the page 2 Press the arrow keypad up or down until the desired whiteline level is shown and press Gig Range Mode You may select the range mode from this menu To select the auto or manual range mode 1 Highlight the RNG MODE field and press Gig The Manual Auto field will be highlighted 2 Press the arrow keypad up or down until the desired range mode is shown and press Gli Fish ID The Fish ID setting determines how the GPS 125 Sounder identifies and labels sonar targets on the screen Three settings are available OFF is the default setting and shows all sonar arget information in its unprocessed form ON shows small medium and large fish icons along with each targets depth Other echo informa ion thermoclines thin stumps etc is shown as a dotted pattern FISH shows fish icons and depth and does not show other echo information To select Fish ID 1 Highlight the FISH ID field and press GHB ON OFF will be highlighted 2 Select the desired setting and press GHB REFERENCE Wh
85. sponsibility for special incidental punitive or consequential damages or loss of use The warranties and remedies contained herein are exclusive and in lieu of all other warranties expressed or implied including any li bility arising under warranty of merchantability or fitness for a parti ular purpose statutory or otherwise This warranty gives you specifi legal rights which may vary from state to state To obtain warranty service call the GARMIN Customer Servi department 913 397 8200 for a returned merchandise tracki 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 war ranty repairs GARMIN retains the exclusive right to repair or replace the unit or software at its sole discretion 1997 GARMIN Corporation 1200 E 151st Street Olathe KS USA 66062 GARMIN Europe LTD Unit 5 The Quadrangle Abbey Park Industrial Estate Romsey UK 5051 9AQ Part Number 190 00111 00 Rev B Printed in Taiwan
86. t has Failed DGPS data being received has been lost You are no longer receiving the beacon signal Route Waypoint was Deleted A route waypoint entered does not exist in the database and has been deleted from the route 72 APPENDIX C Messages amp Time Offsets RTCM Input has Failed DGPS data being received has been lost You are no longer receiving the beacon signal Searching the Sky The GPS 125 Sounder is in searching the sky for almanac data or the unit is in AutoLocate mode Shallow Water Alarm The depth is equal to or less than the set alarm depth Sonar ASIC has Failed The unit internal monitoring system indicates a malfunction Send in for service as soon as possible Stored Data was Lost All waypoints routes time and almanac data has been lost due to bat tery failure or clearing the receivers memory Transfer has been Completed The receiver is finished uploading or downloading information to the connected device No Transducer Sounder Off The transducer signal is not reaching the unit because of a loose connector bad wiring or transducer malfunction WPT Memory is Full You have used all 250 waypoints in the GPS 125 Sounder Delete unwanted waypoints to make room for new entries The chart below gives the UTC time offset for the various longitudinal zones If you are in daylight savings time add one hour to the offset Longitudinal Zone Offset Longitudinal Zone Offset
87. t to return to truck dock etc The RECORD option on the track log setup page must be set to the Yes position There must be at least two track log points stored in memory to create a TracBack route If there are not enough available waypoints in memory to create a TracBack route you will be DFT 3PD alerted with a waypoint memory full message 13 10 0 and the receiver will use any available waypoints o create a TracBack route with an emphasis on he track log closest to the destination the oldest rack log point in memory The TracBack feature will navigate your track log back to the oldest point in If the CRITERIA option on the track log setup page is set to a time interval the TracBack route may not follow your exact path the Automatic setting will provide the best TracBack route the receivers memory If the receiver is turned off or you lose satellite coverage during your trip the TracBack route will simply draw a straight line between any point where coverage was lost and where it resumed If the changes of direction and distance of your track log are very complex 30 waypoints may not DFT 24 15 0 be enough to accurately mark your exact path The receiver will then assign the 30 waypoints to The track log will be divided the most significant points of your track into segments with tempo If you want to save a TracBack route copy route 0 to an open s
88. the CLEAR LOG prompt and press ENTER to clear the track log Note Once all 768 points are used during normal operation the oldest point will be continuously deleted to make room for the latest track log point to be stored TURKHIHG OFF 3 GPS 175 SOFTHARE 2 03 COPYRIGHT 1337 GARHIN CORF Holding the POWER hey for three seconds ensures against unwanted shut off by accidentally pressing the hey H REFERENCE Satellite Page Satellite Page Overview Status Yw Fn HAN EFE Estimated 43 POM h FT Position Error Satellite Sky View Satellite Numbers 01039121721232831 The Satellite Page displays the status of various Hailidi5gbd receiver functions The status information will help you understand what the GPS 125 Sounder is doing at any When backlighting is on a given time and tell you whether or not the receiver has bulb icon will appear on the calculated a position fix Satellite Page Sky View and Signal Strength Bars The sky view and signal strength bars give you an indication of what satellites are visible to the receiver whether or not they are being used to calculate a posi ion fix and the signal quality The sky view in the cen er of the page shows a bird s eye view of the position of each satellite relative to the receivers last known posi ion The outer circle represents the horizon north up he inner circle is 45 above the horizon and the center point is a posi
89. the coordinates of your present position you must have a valid 2D or 3D position fix 25 REFERENCE Editing Deleting amp Renaming Waypoints HRYFOIHT MAKE DOCK H 33 00 000 W 34 53 76S ERG D85 0 13 REHAHE MEH DELETE DOME The waypoint comment field will automatically dis play the date and time of creation of the waypoint You may replace this with a 16 character custom com ment at any time HAYFOIHT MAKE DOCK H 33 00 000 W 34 533 763 SLIF 412A ERG D85 0 138 HEH DELETE DOME To access the rename func tion from the waypoint def inition page highlight the RENAME prompt and press ENTER 26 Editing Existing Waypoints The waypoint definition page also allows you to change the name coordinates comment or reference waypoint field for a stored waypoint Fields shown on pg 24 To edit the name coordinates comment or refer ence waypoint field 1 Use and w to highlight the field you want to edit 2 Press to begin entry in the selected field 3 Enter your new data 4 Press the key to confirm your changes Waypoint Comments Each waypoint stored in the GPS 125 Sounder has a user defined 16 character comment field The default comment is the UTC date and time of the waypoints creation To change or add a comment 1 Use the 4 amp and w keys to highlight the comment field 2 Press to begin entry of your comment
90. the detail Because less area is being shown in a zoom screen objects can be seen in greater detail Sounder Page Range Modes amp Sounder Zoom GARMINS exclusive See Thru technology will allow you to distinguish sonar tar gets from bottom clutter and thermoclines FAUSE Si 135 176 0 078 Use the target cursor to mark the desired underwa ter location Note The bearing and range shown are to the cur sor s location from your pre sent position 15 TTING STARTED Sounder Zoom Once activated the zoomed picture becomes the E coon Sounder Page display Note The zoom function can only be deactivated by pressing the OUT key until the original zoom scale appears The zoom function is accessed by using the IN and OUT key when viewing the Sounder Page The zoom function operates in either Auto range or Manual range Zooming while in Auto will continue to follow the bottom contour while zooming in Manual will show the selected depth To access the sounder zoom function 1 While viewing the Sounder Page press IB once The 2X screen will appear Note the current zoom scale will be displayed in the upper left corner of the screen 2 Press MIB once more to advance to the 4X screen 3 To deactivate the sounder zoom function press E once You may also press and hold until the original scale picture appears and a triple beep sounds Pressing the IN hey once while on the So
91. tion coordinates or its distance and bear ing from an existing waypoint To create a waypoint by entering coordinates 1 If a waypoint is currently displayed in the name field highlight NEW and press GSM Then press the 4 key to clear the name field 2 If a waypoint is not displayed move the cursor to the name field and enter the new waypoint s name 3 Use and w to enter your waypoint name and use 4 and 9 to move to the next character position 4 Press to confirm the waypoint name The posi tion field will now become highlighted with the receiv er s last known position shown if one exists 5 Press to begin entry of the position 6 Use the a and w keys to enter your position and use the and gt keys to move to each character field 7 Press to confirm and save your coordinates The default waypoint comment UTC date and time of cre ation will appear and the highlight will move to DONE 8 Press the key to return to the Menu Page Reference Waypoints To create a new waypoint manually without know ing its position coordinates you ll need to enter its bearing and distance from an existing waypoint The GPS 125 Sounder will then calculate the position coor dinates for you HRYFOIHT MAKE STUMP H 33700 000 W ss ndo ERG DST 3ad 0 525 REHAHE MEH DELETE DOME To create a new waypoint by referencing a stored waypoint 1 Press until the NEW field i
92. tion directly overhead Use the icon to determine if backlighting is turned on during daylight hours When the receiver is looking for a particular satel ite the corresponding signal strength bar will be blank and the sky view indicator will remain highlighted in reverse video Once the receiver has found the satellite a hollow signal strength bar will appear indicating that the satellite has been found and the receiver is collect ing data from it The satellite number in the sky view will also change from reverse video to normal presenta tion As soon as the GPS 125 Sounder has collected the necessary data to use the satellite for positioning the hollow bar will become solid 0103121721232831 Satellites being tracked but blocked from use 03 17 will be displayed in reverse video with the correspond ing signal strength bar hollow 18 Receiver Status and EPE Receiver status is indicated at the top left of the screen with the current horizontal accuracy estimated position error in feet or meters at the top right The status will show one of the following conditions Searching the GPS 125 Sounder is looking for any available satellites in view AutoLocate the GPS 125 Sounder is initializ ing and collecting new almanac data This process can take 7 5 to 15 minutes Acquiring the receiver is collecting data from available satellites
93. tion in which the GPS 125 Sounder is used HAN SETUF FOZITIOH FRHT hdd mm mmm HAF DRTUH WGS 84 GDI 0 25 UNITE Hautical SFEED FILTER On Of sec HEADING Auto Mag E004 The number entered repre sents a window of time the GPS 125 Sounder considers in adjusting to changes in speed and track For exam ple if 12 seconds is entered the speed displayed will constantly represent the speed averaged over the last 12 seconds 54 REFERENCE Units of Measure The GPS 125 Sounder lets you select nautical default statute or metric units of measure for all speed and distance fields To change the unit of measure 1 Highlight the UNITS field and press the key 2 Use and w to select the desired unit of measure 3 Press the key to confirm the selection Speed Filter HAN SETUF FOSITION FRAT hdd mm mmm HRF DRTUH Ws 34 COI 0 25 UNITS Hautical SPEED FILTER flute HEADING Auto Mag E004 The speed filter allows you to determine how the GPS 125 Sounder responds to changes in track or ground speed Three settings are available Auto On or Off The Auto setting is the default and will monitor the changes in your current track and speed and adjust the receivers response time automatically The On set ting allows you to manually enter a response time up to 300 seconds Selecting a higher setting may be desirable in slow speed applications with frequent change
94. torage route before activating another TracBack Activating another TracBack or storage route will overwrite the existing TracBack route rary waypoints to create a route back to the beginning of the track log Whenever a TracBack route is activated tempo rary waypoints e g TOO1 that are not con tained in routes 1 19 are erased If there are tem porary waypoints stored in routes 1 19 the receiver will create any new temporary waypoints 30 using the first three digit number available i D REFERENCE Creating and Navigating Routes The last form of navigating to a destination with the GPS 125 Sounder is by creating a user defined Route route The route navigation feature lets you plan and navigate a course from one place to another using a set of pre defined waypoints Routes are often used when its not practical safe or possible to navigate a direct Navigation course to a particular destination e g through a body of water or impassable terrain Routes are broken down and navigated in smaller segments called legs The waypoint you are going to in a leg is called the active to waypoint and the way point immediately behind you is called the active from waypoint The line between the active to and the active from waypoint is called the active leg Waypoint 2 Active Leg active to waypoint Waypoint 1 active from wa
95. trolled Gain DCG 37 Depth Units us oie s 60 V Fish ICON d 252 eoeoxdaetio es 37 Velocity Made Good VMG 3 Fish ID cts emm AE 59 Keel Offset nyie inanuia niintin 61 W Manual Range Mode 15 Waypoint merean nn RN sheds 3 Moving the Zoom Window 16 Editing ess ipRRR ERIS 26 Noise Rejection 60 Going To a Waypoint 12 Range Modes 15 59 Marking a Waypoint 10 21 See Thru Technology 37 Nearest Waypoints Page 22 Sensitivity eere aaeain 3 58 Reference Waypoints 25 Sounder Alarms 61 Deleti g cens ebbe en 26 Sounder Setup 40 58 REMAMING sa pinsata e eee 26 Sounder Zoom gt oaaao 15 Scanning Waypoints 27 Therrnocline 22 pex e 3 14 Waypoint Comments 26 Waypoint Definition Page 24 78 Waypoint List Page 23 LIMITED WARRANTY GARMIN Corporation warrants this product to be free from defects in materials and workmanship for one year from the date of purchase GARMIN will at its sole option repair or replace any com ponents which fail in normal use Such repairs or replacement will be made at no charge to the customer for parts or labor The customer is however responsible for any transportation costs This warranty does not cover failures due to abuse misuse accident or unauthorized alteration or repairs GARMIN assumes no re
96. tum field is located just below the posi and minutes is the default tion format field and comes with a WGS 84 default setting setting Although 104 total map datums are available for use see the map datum listing in Appendix D you should only change the datum if you are using maps or TEA charts that specify a different datum than WGS 84 FOZITIOH FRAT hddd mm mmm To select a map datum HAF DAT 1 Highlight the MAP DATUM field and press EEB NGS 84 cnr 0 2 2 Use the a and w keys to toggle through and UHITE Mautical select the desired setting Confirm the setting by SPEED FILTER pressing QB Ruta HEADING Auto Mag E004 CDI Scale Settings The course deviation indicator CDI scale defini Adjusting the CDI Scale will tion field lets you select the range of the CDI bar determine the value used in scale Three scales are available 0 25 1 25 and 5 0 the Highway Page and for miles or kilometers with 0 25 being the default setting the range rings on the Map To enter a CDI scale setting Page f displayed 1 Highlight the CDI SCALE field and press El 2 Use and w to select the desired setting and press EE 53 Navigation amp Speed Filter HAU SETUF FOZITIOH FRHT hddd mm mmm HAF DRTUH Ws 84 cor 0 20 UNITS Hautical SPEED FILTER Auta HEADING Auto Mag E004 Choose a navigation unit you are familiar with or that may be appropriate to the situa
97. ugh any bulkhead or deck 4 Once the GPS 125 Sounder unit has been installed con nect the cable to the antenna connector on the back of the unit Turn the antenna connector 1 4 turn clockwise to lock the cable into place Transducer Installation For instructions on transduc er installation see the booklet included with your transducer 65 APPENDIX A Mounting the GPS 125 Sounder Two types of mounting options are included with he GA26 Flange Mount Bracket Dual Lock Velcro Strips The flange mount bracket is useful for permanent antenna mounting on a flat surface The dual lock Velcro should be considered perma nent even though it does not require drilling The adhe sive used to attach the Velcro to the antenna and the mounting surface is very strong Removing an item attached with dual lock Velcro could result in damage to the antenna or to the mounting surface To flange mount the GA26 antenna 1 Attach the flange mount bracket to the GA26 using the two M3 screws included with the antenna APPENDIX A Mounting the GA 26 Antenna cont 2 Using the mounting bracket as a template mark and then drill four 0 115 125 holes Installation 3 If necessary apply silicone sealant between the mount ing surface and flange mount and then attach the anten na to the mounting surface with appropriate screw not included i
98. ugh data is available to compute a DGPS position No RTCM Input the beacon receiver is not properly connected or the baud rates do not match RTCM Input Failed DGPS data was being received but has been lost System Setup The first setup page is the system setup page which is used to select the operating mode time offset and screen preferences The GPS 125 Sounder has four operating modes Normal Mode is the mode used for actual navigation Satellite data is acquired and used in figuring and displaying your position and movement Simulator Mode allows you to operate the unit without acquiring satellites and is ideal for prac icing or entering waypoints and routes while at home GPS Only Mode does not display any informa ion on the Sounder Page This is useful when sing the unit for land navigation while enroute o the water Sounder Only Mode will not display GPS information such as position speed heading and map functions To select an operating mode 1 Highlight the MODE field and press Eg 2 Use the arrow keypad to select a mode and press ENTER REFERENCE DGPS Interface amp System Setup HESSAGES FRESS FAGE Alert messages will signal any problems with DGPS operation SYSTEM SETUF HODE Bounder Only DATE 13 FEB 37 TIHE 03 36 44 pr OFFSET 11 HOURS 12 CONTRAST mum TOHE MSG Key The GPS 125 Sounders four operat
99. under Page activates the 2X Zoom Moving the Zoom Window You may move the displayed range on a zoomed screen at any time just as you would a non zoom screen by pressing the arrow keypad up or down This will move the zoom window If you prefer to keep the window in its new posi tion you will need to save the change Note Saving the new window position requires different steps if you are in Auto range when you move the window versus being in Manual when the window is moved To save a zoom window range in Auto 1 Press the keypad up to view a shallower range or down to view a deeper range The range scale on the left side of the zoomed picture will be highlighted The zoom window may be taved at any time ey ain 2 When the window reaches the desired range press the arrow keypad to accept A Change To Manual Range window will appear Highlight Yes and press Gla 3 If you do not want to save the range highlight No and press GI You may then resume manually moving the zoom window 16 4 Press at any time to return to an auto range mode display Moving the Zoom Window continued To save a zoom window range in Manual 1 Press the keypad up to view a shallower range or down to view a deeper range The range scale on the left side of the zoomed picture will be highlighted 2 When the window reaches the desired range press to accept 3 If you do not want to save the range pr
100. ute 0 To activate a route 1 Selectthe route definition page and press the key to activate the route number field 2 Enter the route number to be activated and press ENTER 3 Move the field highlight to the ACT prompt and press the EB key Inverting a route allows you to navigate route legs in reverse order without editing the original route To activate a route in inverted order 1 Follow the steps above but select the INV prompt and press Gig Active Route Page Once a route has been activated the active route page will appear displaying the waypoint sequence of your route with the estimated time enroute ETE at your present speed and distance to each waypoint As ong as you are navigating an active route the active oute page will become part of the primary page sequence of the unit The active route page will also allow you to change he ETE field to display desired track DTK or estimat ed time of arrival ETA for each leg In addition you can also clear or invert the active route To display DTK or ETA for each leg 1 Highlight the estimated time enroute ETE field and press the key 2 Use the or w keys to select DTK or ETA and press the key The active route page also allows you to clear stop navigating or invert the active route without using the route definition page To invert a route from the active route page 1 Press the
101. utomatically select the route leg closest to your position as the active leg This will give you steering guidance to the desired track of the active leg If you would prefer to steer directly to a route waypoint you can perform an on route GOTO from the active route page 1 Use the and keys to highlight the desired route waypoint and press the key 2 Once the GOTO waypoint page appears press to confirm Note that after you reach the on route GOTO way point the GPS 125 Sounder will automatically resume navigating the rest of the route in sequence REFERENCE Sounder Page Range Mode 4 Digital Depth Sounder P age Overview amp Water Temperature Sonar Target if equipped Arches Range Modes Thermocline Black Line Whiteline 3 9 The Sounder Page lets you use the GPS 125 as a fishfinder The top of the screen shows the range mode being used the water temperature if using a tempera ture sensitive transducer and the digital depth while the middle of the page contains a right to left moving sonar image of the water beneath your boat Note items appear as they pass under your transducer Those objects appearing on the right side of the screen are closer to you than those objects on the left Fish are displayed as a darkened arch or a fish icon in three dif ferent sizes Thermoclines layers of water separating warmer water above and cooler water below appear as dotted patterns
102. ve warning page will appear The GPS 125 Sounder will automatically discontinue standard operation to avoid system overload and 1 Place the mounting bracket in the desired location will allow only screen backlighting operation 2 Mark and drill the four mounting holes for the fasten ers you are using Should this warning appear you should check 3 Fasten the bracket to the surface using the appropri ate fasteners your power source and reduce voltage to the unit to between 12 and 18 volts 5 Screw the two mounting knobs through the bracket and into the GPS 125 Sounder 4 Insert the GPS 125 Sounder 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 fully tightened on both connectors APPENDIX A To flush mount the GPS 125 Sounder aoe Installation The GPS 125 Sounder can be mounted flush with a flat panel of 08 52 thickness using the cam lobe fea ture on its mounting bracket 1 Cut a 4 15 W x 4 67 H hole in panel 2 Place GPS 125 Sounder into hole from the front until its flange rests against the mounting surface 3 From the back side of the panel loosely attach the bracket such that the slot in the ratchet area points away from the mounting panel 4 Rotate the bracket downward until the panel is pinched tightly between the units flange and bracket lobe 5 Tighten knob
103. would be in the Automatic setting This will increase the distance you can travel without using up your track log but will greatly reduce the effec tiveness of TracBack 48 Track Criteria The stored track criteria determines how often posi tions are stored in the track log The default setting is automatic which stores track based on resolution Automatic is the most efficient use of track memory and provides the most accurate TracBack route To change the criteria to record points based upon a specific time interval 1 Highlight the CRITERIA field and press Gg 2 Use or w to select Time Interval and press co 3 Press to begin entry of the interval 4 Enter a value in hours minutes and seconds and press the key Managing and Clearing the Track Log The rest of the track log setup page displays the per centage of available memory currently used to store track log data and function fields in order to clear the track log memory and activate the TracBack feature To clear the track log 1 Highlight CLEAR LOG and press Gig 2 A warning page will appear and ask you to confirm your actions Use the key to move the field highlight to the Yes field and press Eg TracBack Function The TracBack option lets you activate a TracBack route using the track log see pg 29 30 for more infor mation To activate a TracBack route 1 Highlight the TRACBACK option a
104. ye view of surrounding waypoints ERG DST 270 0 205 270 4 05 TRE ZPD CHRHHL Highway Page With the Highway Page you will get graphic steer ing guidance in navigating a route or to a single way point Marking A Waypoint GPS FOSITION Was paint oo1 H 48 21 010 W rs 33 BBO DEFTH 59 FT Add to route number To save a waypoint with the default three digit name simply press the MARK key followed by the ENTER key The GPS 125 Sounder will then return to the page pre viously displayed GPS FOSITION Was paint H 48 30 210 W ss 10 Ou DEFTH T1FT Add to route number SANE Press the UP arrow to move forward through the alpha bet or numbers and DOWN to move backward 10 Getting Started Tour Now that your GPS receiver has been initialized and you are familiar with the primary pages its time to take a tour This is a live tour and is to be conducted with your unit installed and with the boat in the water The our will take you through the receivers basic features and functions as you move about on the water and assumes that the GPS 125 Sounder is turned on initial ized and that you have not changed any of the factory settings units of measure selectable fields etc If hese settings have been changed the pictures and descriptions in this manual may not match what you see on your screen Navigation Simulator If you are not
105. you have to do is cancel the GOTO To cancel an active GOTO 1 Press the key 2 Use the arrow keypad to move the field highlight to the CANCEL GOTO prompt at the bottom of the page and press Gig Using the Sounder Page Now that you have learned the basics of GPS Navigation let s briefly look at how the GPS 125 Sounder works for you as a fishfinder The fishfinding features are covered in detail on pg 37 40 The top of the Sounder Page shows the range mode being used the water temperature if using a tempera ture sensitive transducer and the digital depth while the middle of the page contains a right to left moving sonar image of the water beneath your boat Note items appear as they pass under your transducer Those objects appearing on the right side of the screen are closer to you than those objects on the left Fish are displayed as a darkened arch or a fish icon in three dif ferent sizes Thermoclines layers of water separating warmer water above and cooler water below appear as dotted patterns just above the bottom Using the Sounder Page continued The area of strongest sonar return whiteline is displayed as light and dark checkering Typically the bottom will be the primary source of the whiteline A thin whiteline indicates a softer bottom while a thicker whiteline shows a harder bottom A black line is used to show the point where water meets the whiteline This black line will foll
106. ypoint Whenever you activate a route with the GPS 125 Sounder it will automatically select the route leg clos est to your position as the active leg As you pass each waypoint in the route the receiver will automatically sequence and select the next waypoint as the active to waypoint 31 REFERENCE Route Definition Page GPS FOSITION Was paint FISH 5 H 3 20 534 WO4e SO 02 DEFTH 34 FT Add to route number SANE If you re heading out with out a planned route the mark function can be used to quickly create a route back to your starting point Create a series of waypoints along the way with the MARK key and save them to an open route from the mark position page When you re ready to head back simply activate the route you created in inverted order see pg 34 Route Definition Page The GPS 125 Sounder lets you create and store up to 20 routes of 30 waypoints each Routes are created copied and edited through the route definition page which is accessed through the Menu Page Route Comment Number Field Desired d Leg Distance Track of Leg 3 FISH 2 d ERUSH 5 DRFOFF A SS Total Route TOTAL DST 14d 1 OA Copy Field COFY T Distance CLR IHU ACT Function Prompts To select the route definition page 1 Press GB until the Menu Page appears 2 Use the and w keys to highlight the ROUTES option 3 Press the key to display the route definit

Garmin 125 GPS Receiver User Manual

Contents

Download Pdf Manuals

Related Search

Related Contents