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New Transducers 250 User's Manual

1. digits in the depth window flash on and off to alert you Transducer Type allows you to specify what type of e Automatic Scroll Speed Limit matches the scroll rate transducer you are using if you are not in Simulator mode page 19 to the speed of your vessel if equipped with a Do not use User Defined unless instructed to do so speed sensor or receiving GPS NMEA input Entering e Calibrate Water Speed appears only if you are using a your maximum cruising speed will produce a 100 scroll speed capable transducer sensor Calibration is required rate when you reach that speed One half of that speed will to ensure that the Water Speed displayed on your unit is produce a 50 scroll rate etc accurate The unit automatically uses GPS ground speed if e Keel Offset allows you to offset the surface reading for the available via NMEA input for comparison on the calibration depth of a keel in order to measure depth from the bottom of Ifa GPS ground speed is not available use either your boat s your keel instead of from the transducer s location Enter a speedometer reading not always accurate or a stopwatch to positive number to offset for a keel Enter a negative number determine your speed over a certain distance distance time to compensate for a large vessel that may draw several feet of speed It is recommended that the calibration take place in water The Keel Offset is reflected in the depth reading water having little or no curr
2. Depth Line 19 2x Zoom view Normal view Sonar 2x split screen shown with Depth Line OPERATION gt USING THE ADJUSTMENT MENU Btm Bottom Split shows two reduced pictures the right at the original depth scale and the left showing only sonar returns close to the bottom The bottom is displayed as a flat line across the bottom of the screen and returns are shown at their distance from the bottom You can adjust the scale of the Bottom Split display by changing the Span setting see below Btm Bottom Lock displays the Bottom Lock returns close to the bottom shown at their distance from the bottom picture on the full screen You can adjust the scale of the Bottom Lock display by changing the Span setting see below View Span available when a Zoom scale other than No Zoom is selected The View or Span settings are used to change the viewing range of a zoomed display The View option is enabled when the display is set to 2x Split 2x Zoom 4x Split or 4x Zoom If the display is 2x or 4x split only the zoomed portion on the left side of the display is affected by the change If the display is Bottom Split or Bottom Lock the Span option adjusts the area from the bottom for which the unit displays data Gain controls the sensitivity of the unit s receiver This provides some flexibility in what is seen on the display To see more detail increase the receiver sensitivity by selecting a higher gai
3. plastic thru hull mount depth temp e 200kHz 14 plastic in hull mount depth e 200kHz 14 plastic trolling motor mount depth temp Fishfinder 250 250C Owner s Manual STARTED gt INSTALLATION WETTING Installation The Fishfinder 250 250C must be properly installed according to the following instructions to get the best possible performance To complete the installation you need the appropriate fasteners and tools Verify that all cables can reach the unit mounting location and take time to read through these instructions prior to installation Be sure to always wear safety goggles and a dust mask when drilling cutting or sanding If you experience difficulty installing the unit contact Garmin Product Support or seek the assistance of a professional installer Selecting a Proper Location Choose a location that provides optimal viewing as you operate the vessel and allows easy access to the unit s keypad Select a mounting surface capable of supporting the weight of the unit and protecting it from excessive vibration and shock DO NOT mount the unit in an area exposed to extreme temperature conditions When installing the mounting bracket allow room for the routing and connection of the power and transducer cables Installing the Swivel Mount The Fishfinder 250 250C s compact waterproof case is suitable for mounting in exposed locations or at the nav station The unit comes with a swivel mount brac
4. Press the Left or Right ARROW keys to move the split line Press ENTER when the line reaches a suitable location You may f resize the split line to the left or the right USING THE ADJUSTMENT MENU Pausing the Sonar Page You may pause the Sonar page to stop it from scrolling The paused screen allows you to take a better look at sonar returns When in this mode the word Paused is displayed at the bottom of the screen and a Pointer cursor appears You may move the Pointer around on the paused sonar graph in order to reference sonar items and mark waypoints for that location if attached to a Garmin GPS or compatible NMEA navigation device see page 8 A data field is displayed at the top of the graph with the Pointer s depth surface temperature for that position and GPS coordinates if available This makes it easier to find and use objects such as stumps rocks or brush piles for future fishing locations The depth continues to update while the display is paused but the unit does not show any new sonar data until the Sonar display is unpaused resumed You may see a discontinuity from where the sonar information stops to where it starts again To pause and unpause the Sonar display 1 From the Sonar page press ADJ MENU 2 Using the ARROW keys highlight the Pause option and press ENTER The Sonar display is paused The Pointer cursor appears and data fields for the Pointer appear at the top of the scree
5. Use the controls to change the selected item s configuration or te replese it with another item Modifying a data field Fishfinder 250 250C Owner s Manual OPERATION gt UsiNG THE Main MENU Temp Temperature Tab The Temp tab displays the water temperature log if equipped with a temperature transducer sensor The graph reads from right to left so the most recent temperature measured is displayed on the far right side of the graph The dotted lines within the graph indicate intervals in the temperature scale and the duration of time a a a ba _ ete 1 co Reet Sam 10 Minutes Units Temperature Log Somer me 63 1 5 fa SINANA Main Menu Temp tab The following settings are available Log and Graph Scale sets the temperature range in degrees for displaying the log Select Auto to have the unit determine the best range or select a span of 2 4 6 8 or 10 degrees Fishfinder 250 250C Owner s Manual Reset Scale tesets the scale range for the temperature graph and displays if Log and Graph Scale is set to Auto This is useful when the scale spans a large range due to extreme temperature changes Log Duration sets how fast or slow the temperature log scrolls the shorter the time duration the faster the temperature log scroll Select a duration from minute to 2 5 hours Alarms Tab The Alarms tab contains settings for the unit s alarms For a list of alarms a
6. change the current setting or press the ENTER key to review the setting before making changes Fishfinder 250 250C Owner s Manual Basic OPERATION gt USING THE ADJUSTMENT MENU Adjustment Options F Range A Range oft Zoom No Zoom View Disabled uman a Hold for Main Menu pas Ez Adjustment Menu The following adjustments can be made from the Adjustment Menu e Range sets the display depth range used for viewing The unit can be set to automatically track the bottom or set to a user specified depth range see Custom Range on page 22 e Zoom quickly selects a display zoom scale or to split the display When a scale other than No Zoom is selected the View or Span options are activated in the Adjustment Menu Fishfinder 250 250C Owner s Manual The Zoom function includes the following seven settings No Zoom displays the sonar picture with no zoom 2x Split shows two reduced size sonar pictures at the same time The right half of the display screen shows the complete sonar picture at its original scale The left half shows a portion of the original picture at 1 2 depth scale 2x Zoom displays the 2x zoomed picture on the full screen and does not show the original scale picture 4x Split shows two reduced pictures the right at the original depth scale and the left at 1 4 the original depth scale 4x Zoom displays only the 4x zoomed picture on the full ee Depth Line
7. garmin com prop65 Limited Warranty This Garmin product is warranted to be free from defects in materials or workmanship for one year from the date of purchase Within this period Garmin will at its sole option repair or replace any components that fail in normal use Such repairs or replacement will be made at no charge to the customer for parts or labor provided that the customer shall be responsible for any transportation cost This warranty does not cover failures due to abuse misuse accident or unauthorized alteration or repairs THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED OR STATUTORY INCLUDING ANY LIABILITY ARISING UNDER ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE STATUTORY OR OTHERWISE THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS WHICH MAY VARY FROM STATE TO STATE IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES WHETHER RESULTING FROM THE USE MISUSE OR INABILITY TO USE THIS PRODUCT OR FROM DEFECTS IN THE PRODUCT Some states do not allow the exclusion of incidental or consequential damages so the above limitations may not apply to you Garmin retains the exclusive right to repair or replace the unit or software or offer a full refund of the purchase price at its sole discretion SUCH REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY To obtain warranty
8. in the area of intended distribution Units purchased in the United States or Canada must be returned to the Garmin service center in the United Kingdom the United Fishfinder 250 250C Owner s Manual States Canada or Taiwan for service The Garmin Fishfinder 250 250C has no user serviceable parts Should you ever encounter a problem with your unit please take it to an authorized Garmin dealer for repairs The Fishfinder 250 250C is fastened shut with screws Any attempt to open the case to change or modify the unit in any way will void your warranty and may result in permanent damage to the equipment INDEX INDEX A Accessories 2 Adjustment Menu 16 Advanced Data Fields 23 Alarms 25 Alarms Tab 25 ARROW Keys 13 Automatic Scroll Speed 29 B Background Color 22 Backlight 13 Basic display 23 Battery Alarm 26 Beeper 27 Bottom Lock 18 Bottom Split 18 03 Calibrate Water Speed 29 30 Cleaning 36 Color Background 22 Color Bar 23 Contrast 13 Custom Range 22 D Data Fields 14 23 40 Date 30 Daylight Saving Time 30 Deep Water Alarm 26 Defaults 19 27 Depth 14 17 20 22 28 Depth Line 19 Depth Number 22 29 Depth Units 28 Display Mode 27 Distance Units 28 Drift Alarm 26 E ENTER Key 13 F Factory Settings 27 Fish Alarm 26 Fish Symbols 15 22 Flasher 23 Fuse 7 G Gain 18 Graph 33 Graph Tab 21 H Heading 28 Installation 3 12 K Keel Offset 29 L Language Selection
9. is lower than the voltage where the unit automatically turns off Deep Water Alarm The Deep Water Alarm depth has been reached Drift Alarm The water depth has changed by the amount entered in the Drift Alarm setup Fishfinder 250 250C Owner s Manual Fish Alarm A fish is detected The unit displays an icon and beeps if enabled This alarm does not display a message banner Running Simulator The unit is in Simulator mode This message reappears after 2 minutes of inactivity If the unit does not detect a transducer attached it automatically enters Simulator mode Shallow Water Alarm The Shallow Water Alarm depth has been reached Sonar Failed Unit Needs Repair The unit has an internal problem Contact your dealer or Garmin Product Support to have the unit serviced Timer Alarm The Timer Alarm value has counted down to 00 00 00 Transducer Disconnected Sonar Turned Off tThe unit has no transducer attached has a bad cable transducer or has a disconnected transducer cable If the transducer cable is removed while the unit is on reconnect and cycle power Water Speed Sensor is not Working tThe speed sensor is not detected Check the connections Water Temperature Alarm The Water Temperature Alarm setting has reached a value above below inside or outside of the specified value s APPENDIX gt SOFTWARE LICENSE AGREEMENT LIMITED WARRANTY Software License Agreement BY USING THE FISHFINDER 2
10. or organization of such changes or improvements Visit the Garmin Web site www garmin com for current updates and supplemental information concerning the use and operation of this and other Garmin products Garmin See Thru and DCG Depth Control Gain are registered trademarks of Garmin Ltd or its subsidiaries and may not be used without the express permission of Garmin May 2005 Part Number 190 00328 00 Rev B Printed in Taiwan INTRODUCTION Thank you for choosing the Garmin Fishfinder 250 250C This product is designed for easy operation and to provide years of reliable service Operations for the Fishfinder 250 and Fishfinder 250C are the same unless othewise noted To ensure that you get the most from the Fishfinder 250 250C take time to read this Owner 5 Manual and learn how to operate your new unit This manual breaks down into three main sections Getting Started covers the installation and testing for the Fishfinder 250 250C Basic Operation provides detailed references to the features and operations of the Fishfinder 250 250C and a basic overview of how sonar works and provides information on interpreting sonar graphs The Appendix contains unit specifications and warranty information Product Support If you encounter a problem or just have a question our Product Support Department can be reached Monday Friday 8 AM 5 PM Central Time Phone 800 800 1020 or 913 397 8200 Online http www garmin com contactUs t
11. power data cable To connect the power data cable to a voltage source 1 Determine the polarity of the voltage source using a test light or voltmeter 2 Connect the Red or positive wire to the positive voltage terminal If using the boat s fuse block route the positive connection through the fuse as shown on the diagram 3 Connect the Black or ground wire to the negative voltage terminal 4 Install or check the 2 Amp fuse either on the boat s fuse block or in the in line holder Fishfinder 250 250C Owner s Manual To 10 35 Volt boat supply y E T 2 Amp fuse ame ae K gigg Tite Boat ground g E a To Fishfinder 250 250C D gt INSTALLATION The Fishfinder 250 250C can be connected to another piece of NMEA compatible electronic equipment such as a Garmin GPS Global Positioning System If equipped with a capable transducer the Fishfinder 250 250C can send depth temperature and speed information to the NMEA device It can also mark a location page 20 that could be displayed on another device and can accept GPS navigational data page 23 such as position time course distance etc Refer to the wiring diagram on the following page for interfacing the Fishfinder 250 250C with other devices To connect the power data cable to a GPS or other NMEA device 1 Follow steps 1 4 of the voltage source installation page 7 For Garmin units the ground Blac
12. store the actual waypoint Only the receiving device if capable will store the waypoint Fishfinder 250 250C Owner s Manual Pin 11 Yellow Alarm Pin 15 Red DC Positive Pin 18 Black Ground Yo c m Pin 17 Blue TX COM 1 E During a typical installation only the Red and Black wires are used The other wires do not have to be connected for normal operation of the unit Complete information concerning National Marine Electronics Association NMEA format and sentences is available for purchase from NMEA at NMEA Seven Riggs Avenue Severna Park MD 21146 U S A www nmea org Fishfinder 250 250C Owner s Manual Pin 14 Green TX COM 2 Pin 13 White RX COM 2 Pin 16 Brown RX COM 1 E To Transducer Black Ground Power Data To Unit Blue Port 1 Data OUT Power 10 35 Volts DC O Caiua d Brown Port 1 Data IN White Port 2 Data IN N C Green Port 2 Data OUT He RXD GPS NMEA Device TXD Yellow Alarm Low Alarm Relay 100ma max coil current and RXD 9 NMEA Device RXD You can download a copy of Garmin s proprietary communication protocol document from the Support section of our Web site at www garmin com gt INSTALLATION GETTING STARTED gt INSTALLATION Installing the Transducer Proper transduc
13. the target depth attached Scale controls the presentation of the depth scale displayed vertically along the right side of the graph The depth scale display can be configured four different ways Overlay Corners Basic or No Scale Custom Range allows you to specify a custom viewing range scale Once enabled this range is displayed as Custom in the Range adjustment control The left value is the top of the scale and the right value is the bottom of the scale Background Color Fishfinder 250C only allows you to change the background color of the Sonar display Choices are Black Blue and White Number Size allows you to choose between a Normal or Large sized Basic depth temp speed display This does not change the advanced data field number sizes Temperature and Water Speed hides or displays temperature and water speed on the Sonar page When set to Auto the unit automatically displays this information only if it is received from the transducer Fishfinder 250 250C Owner s Manual OPERATION gt UsiNG THE Main MENU Tools Tab The Tools tab controls the display of useful sonar tools 292 geen Flasher Main Menu Tools tab The following settings are available e Flasher this option activates a graphic flasher representation displayed on the right side of the graph The graphic flasher displays structure and bottom returns much the same as a true flasher You may find this feature part
14. 27 Log and Graph Scale 25 Log Duration 25 M Main Menu 22 MENU Key 13 N NMEA 8 20 27 29 30 NMEA Setup 27 Noise Reject 19 Number Size 22 P Packing List 1 Pointer 8 13 16 20 24 Position Format 28 POWER BACKLIGHT key 12 13 Power Up 12 Preface iii R Range 17 Registration iii Fishfinder 250 250C Owner s Manual INDEX Reset Odometer 27 Reset Scale 25 S Scale 22 Scroll 19 20 Scroll Speed 29 Setting an Alarm 26 Set Up Tab 33 Shallow Water Alarm 26 Simulator 27 Size Split 19 Software Version 27 Sonar Understanding 31 32 34 Sonar Page 14 Span 18 Specifications 36 Speed Units 28 Split Screen 17 19 Storage 36 System Tab 27 T Target Level 18 Temperature 22 Temperature Graph 23 Temperature Tab 25 Temperature Units 28 Testing the Installation 12 Time 30 Fishfinder 250 250C Owner s Manual Timer 26 Time Duration 25 Time Format 30 Time Tab 33 Time Zone 30 Tools Tab 23 Transducer 2 11 12 19 31 32 Transducer Type 29 U Understanding Sonar 33 34 Understanding the Graph 33 Units Tab 28 V View 18 W Water Speed 22 23 29 Water Temperature 23 Water Temperature Alarm 26 Water Type 29 Whiteline 18 34 Z Zoom 15 17 ZOOM Key 13 For the latest free software updates excluding map data throughout the life of your Garmin products visit the Garmin Web site at www garmin com Copyright 2005 Garmin Ltd or its subsidiaries Garmin Internat
15. 50 250C YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS OF THE FOLLOWING SOFTWARE LICENSE AGREEMENT PLEASE READ THIS AGREEMENT CAREFULLY Garmin grants you a limited license to use the software embedded in this device the Software in binary executable form in the normal operation of the product Title ownership rights and intellectual property rights in and to the Software remain in Garmin You acknowledge that the Software is the property of Garmin and is protected under the United States of America copyright laws and international copyright treaties You further acknowledge that the structure organization and code of the Software are valuable trade secrets of Garmin and that the Software in source code form remains a valuable trade secret of Garmin You agree not to decompile disassemble modify reverse assemble reverse engineer or reduce to human readable form the Software or any part thereof or create any derivative works based on the Software You agree not to export or re export the Software to any country in violation of the export control laws of the United States of America WARNING This product its packaging and its components contain chemicals known to the State of California to cause cancer birth defects or reproductive harm This Notice is being provided in accordance with California s Proposition 65 If you have any questions or would like additional information please refer to our Web site at http www
16. ange the backlight setting Press and release POWER BACKLIGHT to toggle the backlight setting between maximum user set and minimum brightness levels 3 Press the Left or Right ARROW keys to change the contrast setting 4 Press ENTER to return to the Sonar page The currently selected adjustment option page 17 is displayed in the top left of the screen Directly below the adjustment option the screen displays numeric data such as Depth Water Temperature and Water Speed pages 23 24 The middle of the page contains a right to left moving sonar image of the water beneath your boat Items appear as they pass under your transducer Items on the right side of the screen are closer to you than those on the left Along the right side of the screen is a scale that reflects the depth of the area being displayed Current adjustment Ae Renge A 0 Depth option el 2 Io Numeric 58 2 A Fish arches data ET simulated Flasher Bottom j gt Thermocline Frequency mode Fishfinder 250 250C Owner s Manual Basic OPERATION gt USING THE SONAR PAGE The display may also be set to show a split screen view of a zoomed portion of the sonar bottom lock display scaled from the bottom up or a combination of these options pages 17 18 For example you may choose to show dual frequency at a 2x zoom Dual 2x on one half of the screen with normal range dual frequency Dual on the other half The curr
17. black Press the Up or Down ARROW keys to highlight different tab selections Press the Right ARROW key to access the selection fields Each time the Main Menu is accessed the unit returns to the last edited selection field Press the Left ARROW key to return to the tabs To change a setting on a Main Menu tab 1 Using the ARROW keys highlight the desired field and press ENTER 2 Highlight the desired setting and press ENTER 3 Press ADJ MENU to return to the Sonar display or to cancel data entry Fishfinder 250 250C Owner s Manual Graph Tab The Graph tab allows you to determine the appearance of the scrolling graph display and contains unit settings that usually do not require frequent change Main Menu Graph tab UsinG THE Main MENU The following settings are available e Fish Symbols controls how the graph shows underwater targets and background information If the symbols are Off the unit displays all of the available information about the underwater environment If the symbols are On the graph displays only the information related to those symbols Off Fish Symbols Off All available information is displayed inti Suspended targets are displayed as ME fish symbols Background information is displayed i217 Same as above with the target depth MBX attached x Suspended targets are displayed as fish symbols No background information is displayed a Same as above with
18. bled to receive this data page 27 To toggle the data field display 1 Use the ARROW keys to highlight Advanced Data Fields and press ENTER 2 Select On or Off and press ENTER To open the advanced data field setup screen use the ARROW keys to highlight Configure Advanced Data Fields and press ENTER Select an item from the list and press ENTER to configure Press ADJ HENU when dane Advanced data field setup screen You may either directly edit an existing field on the left or add a new data field from the list on the right Highlighted items on the right appear with a black background and the associated field on the left is outlined with a moving dotted line To modify or add a data field 1 Using the ARROW keys press Left to modify an existing field or Right to add a new one then press Up or Down to highlight the desired item Press ENTER The available options appear on the right 2 Select an option from the list on the right and press ENTER You may choose to display a Wide or Narrow sized format some data fields are only available in Wide format arrange the display order with Move Up or Move Down Narrow data fields always arrange below Wide data fields Remove a data field or Replace a data field For Replace choose a replacement item from the list and press ENTER 3 Highlight OK and press ENTER to save changes 29 8 Poe oor w Move Down 2e 60 3 14 2 R i ain fk
19. cevtedatacccccatuavtocesaccveves Selecting a Proper Location cecccsssseseesesteseeseeseesesteeneeseenees 3 Installing the Swivel Mount ccessessesseesesssestesseeseesesteeteeseenees 3 Flush Mounting the Fishfinder 250 250C Unit 6 Connecting the Power Data Cable cccscsssesseseeeeesteseeesnees Interfacing ssnin inanir i ER iS 8 Installing the Transducer c scccsssssessessessessesssestesseeseesneeneseeseenes Transom Mount Installation ccssessesseessecseeteestestesneeseees Shoot Thru Hull Installation Testing the Installation cecececesssessessessessesseseesseeseesnesnseeeseenes Basic Operation ccccsscssssccesesssseeesssssssecsesssetsseeeseesesees 13 Using the Keypad cscscsssssssseeeeessssseseesesessssseeeesessnseeeneees 13 Using the Sonar Page sssssssssesssssssesssseesssessssssesesessnseseeeees 14 Using the Adjustment Menu cscssssssesseesssseeseesesesiseees 16 Adjustment Options ceccecsssssssessesseessecsecsecseseesseeseeseenseteeseenns 17 Pausing the Sonar Page cccesssssssessesecsesseesseseesseeseesectseeeseenns 20 Using the Main Menu Graph Tab oo eee Tools Tabiin piinaa Configuring Advanced Data Fields cccsssseeseseseeseeees 23 Temp Temperature Tab Alarms Tab ciisctueiiit cians widiansida addceaniie dnd System Taberei n EREA E RRA Units Tab Sonar Tab Time Tabisz Understanding Sonar ssssssssssssrsnsinsrensunnnnnnnnnunnnnnnnnnnnnnnnnna
20. collects the reflected sound waves and sends the data to the unit to be processed and displayed on the graph The underwater data is displayed on the graph in the order it is returned first returned first on the graph Generally speaking if the only thing between the transducer and the bottom is water the first strong return will come from the bottom directly below the transducer The first strong return sets the bottom level Weaker secondary returns provide the detailed data The Fishfinder 250 displays sonar returns as shades of gray stronger returns are darker and weaker returns are lighter On the Fishfinder 250C sonar returns appear as red strongest orange strong yellow medium green weaker and blue weakest Fishfinder 250 250C Owner s Manual The diagram below shows an underwater scene as it would appear on the graph The fish in the diagram is currently in a dead zone and is not detected by the sonar The fish is in the coverage area of the transducer but the first strong return set the bottom level above the fish The first strong return to reset the bottom level below the fish will enable the fish to be detected The following pages will show how this data can help you improve your fishing Dian ANa DASIC UPE RATION gt UNDERSTANDING SONAR Transducer Coverage we ce The area covered by the transmitted sound waves is determined by A the cone angle of the transducer and the water de
21. e display to measure the depth of underwater objects The depth of the line is displayed in a box on the right side of the line When the Depth Line adjustment window is visible press the Up or Down ARROW keys to control the position of the line on the graph Noise Reject helps filter unwanted noise from the graph This option can be turned Off set to Normal automatically adjusts for optimum viewing or set to a fixed 1 100 setting Higher noise rejection settings make the unit less likely to show fish or structures Scroll adjusts the rate that the graph scrolls from right to left If you are sitting still or the graph is moving too fast slowing the scroll rate or pausing it can be beneficial Auto automatically adjusts the scroll rate according to the boat s speed See also Automatic Scroll Speed Limit on page 29 Fishfinder 250 250C Owner s Manual Size Split enables width adjustment of the Sonar page split screen This option is only available when a split zoom is selected You may adjust the size of the split window anywhere from 1 4 to 3 4 width from the right half of the Sonar page Defaults testores adjustment options back to original factory settings To resize the Sonar page split screen 1 2 From the Sonar page split screen press ADJ MENU Using the ARROW keys highlight the Size Split option and press ENTER A small double arrow is displayed in the middle of the split line on the screen
22. echSupport jsp Check the Garmin Web site www garmin com for links to Product Support and Product FAQs Fishfinder 250 250C Owner s Manual Enjoy your new Fishfinder 250 250C and once again thank you for choosing Garmin Product Registration Help us to better support you by completing our online registration today Connect to our Web site www garmin com and look for the Product Registration link on the Home page Your unit s serial number is located on the back of the unit Use this area to record the serial number in case your Fishfinder 250 250C is lost stolen or in need of service Be sure to keep your original sales receipt in a safe place or attach a photocopy to these instructions Serial Number A NOTE If you have previously registered a Garmin product purchase we invite you to re register using our online system Many services provided by our product registration system are now automated and re registering your purchase ensures you the best possible support from Garmin TABLE OF CONTENTS PVE OU GENO iccsisaconnesisancadascraasceasianataasesiscesamaanastcrvissnasananian iii Product Support iii Product Registration ss ssssesssssssrsresrssssrssreessssssrsrrirenssnsssrerreessssss iii Getting Started senina 1 Packing LiSt sissccisiscscsceccccssstscaceccccsssesteveccsessnestereccvessneveececoeeveves Transducers see Optional Transducers Installation ssisicccccscicsssccccccvevestvcaceravesestaccec
23. ent Fishfinder 250 250C Owner s Manual a N gt Usinc THE Main Menu To calibrate the water speed 1 Use the ARROW keys to highlight Calibrate Water Speed and press ENTER Bring the boat to a cruising speed Both the top GPS ground speed and uncalibrated water speed will be shown at the bottom of the calibration window Note your top speed then stop the boat and press ENTER By default the top speed will automatically show in the What was your top water speed field If a ground speed is not available the top uncalibrated water speed is used instead If the new speed is correct highlight OK and press ENTER To manually enter a calibration press ENTER on the speed field enter a new speed and press ENTER A NOTE lf the boat is not moving fast enough or the speed sensor is not registering a speed a Boat Is Not Moving Fast Enough To Calibrate message is displayed at the bottom of the screen Check that the speed sensor wheel is moving or safely increase boat speed If there is a problem with the speed sensor unit or if a speed senor is not installed a Water Speed Sensor Is Not Working message is displayed at the bottom of the screen Check the connections of speed sensor cables Time Tab The Time tab displays the current time and date allows you to adjust the 12 or 24 hour time format select a time zone and adjust for daylight saving to show correct local time The time will only display if you a
24. ent display mode is shown at the bottom of each sonar display The Fishfinder 250 displays sonar returns as shades of gray stronger returns are darker and weaker returns are lighter On the Fishfinder 250C sonar returns are displayed as red strongest orange strong yellow medium green weaker and blue weakest The Fish Symbols option page 22 allows you to find fish by viewing the actual sonar data a fish symbol or a combination of both Fish symbols appear as black on the Fishfinder 250 and green on the Fishfinder 250C When Frequency is set to Dual page 14 the appearance of the fish symbols and simulated fish returns will change Fish symbols from the narrower beam 200kHz will be solid narrow returns but the returns from the wider beam 50kHz will be hollow wide returns Simulated fish icons are displayed in three different sizes based on the size of the return Actual fish returns may not always appear as perfect arches due to the speed fish orientation and or other conditions For more information on understanding the sonar see pages 31 33 Fishfinder 250 250C Owner s Manual Fish symbol Wide beam returns 49 Split screen view lew ex la oa Fish symbols Narrow beam returns Frequency mode gt USING THE ADJUSTMENT MENU Using the Adjustment Menu The Adjustment Menu allows direct access to the settings and features most commonly used on the S
25. er 250C uses a red line to show the point where water meets the bottom This line follows the bottom contour along with any significant objects lying on the bottom The unit uses whiteline to make this bottom layer easier to distinguish With the Fishfinder 250 250C whiteline helps accentuate where strong signals are located which makes bottom type determination easier The example to the right shows the bottom return with and without the whiteline activated See page 18 for more information Whiteline Whiteline turned Off Soft bottom Hard bottom 34 Whitelines can also help you to determine the type of bottom structure that is displayed on the graph By determining the hardness of the structure you can make a better informed decision on the type of structure Structure is hard probably a rock or stump Structure is soft probably a mud pile Fishfinder 250 250C Owner s Manual Basic OPERATION gt UNDERSTANDING SONAR Thermoclines One feature unique to Garmin is See Thru technology See Thru technology allows the Fishfinder 250 250C to see through thermoclines and locate fish where they live and fish love thermoclines A rough definition of a thermocline is a break in the water where the temperature changes faster than in the water above it Thermoclines give weak returns and are shown as the weakest colors shades page 15 Thermocline Fishfinder 250 250C Owner s Ma
26. er installation is key to getting the best performance from your new unit If the transducer lead is too short extension cables are available from your Garmin dealer Coil and secure any excess cable DO NOT cut the transducer lead or any part of the transducer cable as this will void your warranty The cable cannot be spliced and connected to any existing Garmin or non Garmin transducer cables Following are some tips and basic installation instructions for some popular transducers Detailed installation instructions are provided in the transducer kits Some transducers may need to be installed by a professional marine installer t To Unit Speed Temp Transducer Connecting a Transducer to Multiple Sensors Transom Mount Installation C Transom Mount Transducer depth temp NOTE DO NOT mount the transducer behind strakes struts fittings water intake or discharge ports or anything that creates air bubbles or causes the water to become turbulent It is important that the transducer be Apply marine sealant to all screw threads to prevent water from seeping into the transom in clean non turbulent water for optimal performance Mount the transducer parallel with the bottom Mount the transducer cable cover gt well above the waterline A be F P The transducer should extend 1 8 3mm below a t fiberglass hull or 3 8 10mm below an aluminu
27. ges 8 9 for details on available NMEA sentences Factory Settings restores all settings to the original factory default values for the entire unit Software Version displays the unit s software version and electronic serial number Reset Odometer this will only appear if you are using a speed capable transducer sensor Resets the odometer field back to zero See Configuring Advanced Data Fields on page 23 for more information N gt Usinc THE Main Menu Units Tab The Units tab defines units of measure 31 2 E O S i ooo Graph Depth Tools Feet ft filorms Temperature System Fahrenheit F Distance and Speed Fme Nautical nm ft kt Main Menu Units tab The following settings are available Depth select units of measure for depth in Feet ft Fathoms fa or Meters m Temperature select units of measure for temperature in Fahrenheit F or Celsius C Distance and Speed select units of measure for distance and speed readouts in Nautical nm ft kt Nautical nm m kt Statute mi mh or Metric km kh terms e Position Format change the coordinate system in which a position reading is displayed The default format is latitude and longitude in degrees minutes and thousandths of a minute hddd mm mmm The following additional formats are available latitude longitude in decimal degrees hddd ddddd and latitude longitude in degrees mi
28. icularly useful when using fish symbols pages 15 22 e Color Bar shows a gradient scale of the current Target Level setting page 18 Temperature Graph toggles On or Off the display of a temperature graph on the Sonar page Fishfinder 250 250C Owner s Manual e Advanced Data Fields toggles On or Off the advanced data fields on the Sonar page Configure Advanced Data Fields activates the advanced data field setup screen Configuring Advanced Data Fields The top left of the screen contains configurable data fields for the Sonar display By default the Basic display shows Depth Water Temperature and Speed depending on the Graph tab settings and type of transducer sensors attached The Configure Advanced Data Fields option in the Tools tab allows you to customize the data fields that appear The data field setup screen shows a larger configurable data field with a white background The setup screen allows you to select the type of data displayed and either a Narrow small or Wide large size format for each data field Y Ronge 0 PT 32 9 14 Eeken 200k 70 Sonar page with advanced data fields N gt Usinc THE Main Menu The following selections require the proper NMEA data pages 8 9 in order to display information in a data field Bearing Compass Course Distance to Next Off Course Pointer Position Speed Time of Day Track Turn and VMG NMEA Input Output must also be ena
29. important to understand that the unit does not display a 3 D representation of the underwater environment The unit can display multiple items at the same time and determine when they were received but not where they originated Examples and 2 provide a look at the underwater world from a top view and illustrate how these views would be displayed on the graph On both graphs it appears that the fish and tree are side by side as shown in Example 1 However when we look at Example 2 we see that the fish can be several feet from the tree It is important to remember that the Fishfinder cannot determine where in the coverage area the tree or fish are only that the returns were received at the indicated depths in the same time frame NOTE Remember that the Fishfinder displays a 2 D picture of the underwater environment The fish and tree could be located anywhere in the coverage area at that time Fishfinder 250 250C Owner s Manual Enlarged transducer view Example 1 Enlarged transducer view Example 2 Basic OPERATION gt UNDERSTANDING SONAR Whiteline The Fishfinder 250 250C can help you to determine if the bottom is hard or soft When the sonar soundwaves are reflected back by the bottom a hard bottom returns a stronger signal than a soft bottom A thin whiteline indicates a softer bottom while a thick whiteline indicates a harder bottom Normally the Fishfinder 250 uses a black line and the Fishfind
30. ional Inc 1200 East 151 Street Olathe Kansas 66062 U S A Garmin Europe Ltd uadrangle Abbey Park Industrial Estate Romsey SO51 9DL U K Unit 5 The Q Garmin Corporation o 68 Jangshu 2 Road Shijr Taipei County Taiwan www garmin com Part Number 190 00328 00 Rev B
31. k wires serve as data ground and must be attached together or on the same terminal Refer to the wiring diagram of your GPS unit for wire identification 2 Connect the Blue Data OUT wire from the Fishfinder to the Data IN wire on the GPS NMEA harness 3 Connect the Brown Data IN wire from the Fishfinder to the Data OUT wire on the GPS NMEA harness 4 Set the Fishfinder 250 250C NMEA Input Output to On page 27 For Garmin GPS units set the communications interface to NMEA NMEA NMEA In NMEA Out or NMEA Interfacing The Fishfinder 250 250C allows for NMEA 0183 Version 2 3 input output with a compatible GPS or navigation device NMEA Input Output must be set to On to send receive data page 27 For additional information on using your Fishfinder 250 250C with NMEA devices see pages 20 and 27 The following sentences are for NMEA 0183 Version 2 3 Input GPBOD GPBWC only used if RMB not present GPGGA GPGLL only used if GGA not present GPRMB GPRMC GPXTE only used if RMB not present Output SDDBT SDDPT SDMTW SDVHW SDWPL only if a waypoint is marked in Pointer mode Garmin GPS units will accept an SDWPL WPL NMEA sentence and create a waypoint saved location at that position page 20 For compatibility with other brands of GPS or NMEA capable navigation devices check with those manufacturers to see if their units accept store NMEA 0183 SDWPL sentences waypoints The Fishfinder 250 250C does not
32. ket that can be used for console or overhead mounting Fishfinder 250 250C Owner s Manual When choosing a location for the unit consider the following conditions e There should be at least a 3 8 cm clearance behind the case to allow connection of the transducer and power data cables e The mounting surface should be sturdy enough to support the unit and protect it from excessive vibration and shock A NOTE The temperature range for the Fishfinder 250 250C is 5 F to 130 F 15 C to 55 C Extended exposure to temperatures outside this range in storage or operating conditions may cause failure of the LCD screen This type of failure and related consequences are NOT covered by the manufacturers limited warranty GETTING STARTED gt INSTALLATION To install the swivel mount bracket Tools not included Drill screwdriver Phillips or standard and either of the following OK Three 8 4mm pan head machine bolts with matching nuts and washers and a 5 32 5mm drill bit The swivel base is designed to be secured using a pan head screw or machine bolt If you use a screw with a countersunk head you risk e Three 8 pan head self tapping screws and an damaging the mounting bracket appropriately sized drill bit for drilling starter holes 1 Using the swivel base as a template mark the location of the three holes that are used to secure the bracket to the mounting surface 2 Drill the mounting ho
33. les e If securing the base with machine bolts drill three 5 32 5mm holes at the locations you marked e If securing the base with self tapping screws drill starter holes at the locations you marked Starter holes should generally be no deeper than half the screw length 3 Secure the swivel base with three bolts or screws DO NOT OVERTIGHTEN 4 Place the rest of the mount over the swivel base and secure with the short knob Secure the base and attach the mount 4 Fishfinder 250 250C Owner s Manual GETTING STARTED gt INSTALLATION To install the unit on the bracket 1 Align the slot on the back of the unit with the long mounting knob and slide the unit into place You may need to adjust the long mounting knob to spread the bracket arms apart Turn counter clockwise to widen the bracket arms clockwise to tighten 2 Adjust the unit angle and tighten the long mounting knob until snug 3 To tilt the unit loosen the long mounting knob on the right side of the bracket assembly 4 To rotate the entire bracket twist it left or right The bracket clicks as you turn it 5 Tighten all knobs once the desired viewing angle is obtained Slide the unit onto the bracket Adjust for optimal viewing Fishfinder 250 250C Owner s Manual 5 GETTING STARTED gt INSTALLATION Flush Mounting the Fishfinder 250 250C Unit The Fishfinder 250 250C can be flush mounted on a flat panel When flush moun
34. m hull Make sure that the transducer is below water level when the boat is on plane at high speed Do not mount the transducer directly in the path of the prop The transducer can cause cavitation that may degrade the boat s performance and damage the prop Fishfinder 250 250C Owner s Manual GETTING STARTED gt INSTALLATION Shoot Thru Hull Installation To avoid drilling a hole to mount a thru hull transducer a transducer may be secured with epoxy inside a boat shoot thru hull installation This type of installation can reduce noise and allow you to use a higher gain setting For a transducer to be mounted inside the hull shoot thru not thru hull the boat must be fiberglass with no core If you are unsure of your boat type contact the manufacturer Professional installation may be necessary Always wear a dust mask and safety goggles when installing Some transducers are specifically designed to be mounted inside a fiberglass hull The standard plastic transom mount transducer can also be mounted in this fashion using the following method If using a temperature sensing transducer the temperature displayed reflects the hull temperature When choosing a location for the transducer consider the following conditions The location has to be solid fiberglass devoid of any air bubbles laminates fillers or dead air space The location needs to be in an area of clean water at all speeds The loca
35. ment of the cursor when paused in Pointer mode Allows direct control of Sonar page adjustments ENTER Key press to select a highlighted menu option When entering data allows you to initiate entry and then accept the selected value s When paused in Pointer mode press to create a waypoint at the Pointer position if interfaced with compatible NMEA GPS ADJ MENU Key from the Sonar screen press and release to display the Adjustment Menu Press and hold to access the Main Menu for unit configuration From either menu press and release to return to the Sonar page POWER BACKLIGHT Key press and hold to turn the unit on and off While the unit is on press and release to display the light contrast adjustment window See page 14 for more information Fishfinder 250 250C Owner s Manual 13 gt USING THE SONAR PAGE Using the Sonar Page The Sonar page is where your Fishfinder 250 250C becomes a powerful fishfinder flasher If the unit does not detect a transducer a Sonar Turned Off message is displayed on the Sonar page If in Simulator mode a Running Simulator message appears You can adjust the unit s backlight and contrast settings to improve screen readability To change the backlight contrast settings 1 Press and release POWER BACKLIGHT to display the light contrast adjustment window The adjustment window automatically disappears when idle for 20 seconds 2 Press the Up or Down ARROW keys to ch
36. mes may occur such as in the trunk of a car as permanent damage may result Unit settings will be retained in the unit s memory without the need for external power WARNING The Fishfinder 250 250C lens is coated with a special anti reflective coating that is very sensitive to skin oils waxes and abrasive cleaners CLEANERS CONTAINING AMMONIA WILL HARM THE ANTI REFLECTIVE COATING It is very important to clean the lens using a lint free clean cloth and an eyeglass lens cleaner that is specified as safe for anti reflective coatings Fishfinder 250 250C Owner s Manual APPENDIX gt MESSAGES AND ALARMS Messages and Alarms The Fishfinder 250 250C uses an on screen alert message system Press the ENTER key to acknowledge a message Battery Alarm tThe battery s voltage has fallen below the value entered in the Battery Alarm setup Battery Voltage High The input voltage is too high the unit will shut off You must lower the input voltage Boat is not Moving Fast Enough to Calibrate The boat is not moving fast enough for the speed wheel to provide a valid speed Can t Send Waypoint The unit was unable to transmit the waypoint via the NMEA WPL sentence Check the wiring Can t Read Voltages That High Limited To Top Of Range The Voltage value in the Battery Alarm setup is higher than the unit can read Can t Read Voltages That Low Limited To Bottom Of Range The Voltage value in the Battery Alarm setup
37. n 3 To unpause the Sonar display press ADJ MENU highlight the Resume option and press ENTER As you move the Pointer the depth temp and position if available are displayed at the top of the screen To mark a remote waypoint 1 With the Sonar display paused use the ARROW keys to move the cursor onto the target you want to mark A data field appears with the cursor s depth surface temperature for that position and GPS coordinates Press ENTER The New Waypoint window appears with a default four character name a three digit number preceded by S to designate a waypoint marked with sonar and the pointer s coordinates automatically filled in To change the name highlight the name field and press ENTER Make your changes using the ARROW keys and press ENTER when done When finished move the field highlight back to OK and press ENTER The unit sends a NMEA WPL sentence to the attached GPS unit or NMEA navigational device pages 8 9 Fishfinder 250 250C Owner s Manual OPERATION gt UsiNG THE Main MENU Using the Main Menu The Main Menu contains the unit settings that usually do not require frequent change The Main Menu is divided into eight tabs Graph Tools Temp Alarms System Units Sonar and Time Each tab is described in more detail in this section To enter the Main Menu press and hold the ADJ MENU key The first time you enter the Main Menu the Graph tab is highlighted in
38. n A narrow cone angle transducer is better suited to deep water installations providing a smaller coverage or viewing area than a wide cone transducer but with improved bottom resolution and a smaller dead zone Dead zone fish not seen Optional Transducers Included in the Optional Packages page 1 are transom mount transducers and separate speed sensors These transducers provide good all around performance In addition a variety of optional transducers are available from your local dealer or direct from Garmin e 200 50kHz 12 45 plastic transom mount depth temp e 200 50kHz 12 45 plastic transom mount depth temp speed e 200 50kHz 12 45 bronze thru hull mount depth e 200 50kHz 12 45 bronze thru hull mount depth temp speed e 200 50kHz 12 45 bronze thru hull mount long stem depth temp speed e 200 50kHz 12 45 plastic thru hull mount depth e 200 50kHz 12 45 plastic adjustable in hull mount e 200kHz 14 plastic transom mount depth e 200kHz 14 plastic transom mount depth temp e 200kHz 14 plastic transom mount depth temp speed e 200kHz 8 plastic transom mount depth temp e 200kHz 8 plastic transom mount depth temp speed e 200kHz 12 bronze thru hull mount depth e 200kHz 12 bronze thru hull mount depth temp e 200kHz 9 bronze thru hull mount depth temp speed e 200kHz 12 plastic thru hull mount depth e 200kHz 12
39. n percentage If there is too much detail or if the screen is cluttered lowering the sensitivity may increase the clarity of the display Y View A ie Ea Bar represents area shown on 2x view Sonar view adjustment Target Level adjusts which colors Fishfinder 250C or shades of gray Fishfinder 250 are used to display sonar information A Color Bar page 23 is displayed on the right side of the screen as you adjust this setting A higher percentage results in more strong signaled colors or shades page 15 displayed on the Sonar page A lower percentage results in more weaker signaled colors or shades page 15 displayed on the Sonar page This setting does not increase decrease the unit Gain Whiteline controls how the unit displays information about the bottom type hard or soft When turned Off all high intensity bottom returns are displayed as red on the Fishfinder Fishfinder 250 250C Owner s Manual PERATION gt USING THE ADJUSTMENT MENU 250C and black on the Fishfinder 250 When set at Normal or 1 100 this option can be used to better determine bottom hardness See page 34 for more information on this feature Frequency allows you to choose a sonar operation frequency The frequency is the pitch of the sound that the transducer sends and receives You may choose 200kHz 50kHz or Dual frequency when using a dual frequency transducer Depth Line adds a horizontal depth line across th
40. nd unit messages see page 37 This tab is divided into two subtabs Sonar and System Main Menu Alarms tab System subtab Main Menu Alarms tab Sonar subtab UsiNG THE Main MENU Sonar alarms To set an alarm e Fish sets an alarm icon to sound display when the unit 1 Use the ARROW keys to highlight the desired subtab of the detects a fish of the specified symbol size Alamis ab Shallow Water Deep Water sets alarms to sound for when a fe e a i aha Ei o a a 3 Change the mode to the desired setting and press ENTER 4 Highlight the next field to the right and press ENTER then enter the desired settings and press ENTER to finish 5 If you want the alarm to display and beep until acknowledged highlight the Persist box and press ENTER to place a check mark in the box e Drift sets an alarm to sound when you ve exceeded a specified drift depth range For example if the value is set to 5 ft and the current depth is 20 ft the alarm will sound if the unit detects a depth greater than 25 ft or shallower than 15 ft e Water Temperature sets an alarm to sound when the transducer reports a temperature above below inside or outside the specified values System alarms e Battery sets an alarm to sound when the battery nears a critical state of discharge e Timer allows you to set stop or reset a timer With the Count Dn Down and Count Up settings you may specify the dura
41. nual 35 APPENDIX gt PHYSICAL SPECIFICATIONS CLEANING AND STORAGE APPENDIX Physical Specifications Size 6 1 Wx 4 9 Hx 2 9 D 15 5 cm x 12 5 cm x 7 4 cm Weight 1 1 Ibs 0 5 kg Display Fishfinder 250 4 5 diagonal 11 4 cm 3 2 W x 32 H 8 1 cm x 8 1 cm high contrast 10 level grayscale FSTN display with adjustable brightness 320 x 320 pixels Fishfinder 250C 4 5 diagonal 11 4 cm 3 2 W x 3 2 H 8 1 cm x 8 1 cm high contrast 16 color CSTN display with adjustable brightness 320 x 320 pixels Case Fully gasketed high impact plastic alloy waterproof to IEC 60529 IPX7 standards Temp Range 5 F to 130 F 15 C to 55 C Power Source 10 35 Volts DC Usage 17 watts max at 10 volts DC 15 watts at 13 8 volts DC nominal Fuse 2 Amp AGC 3AG Sonar Power Dual frequency 500 watts RMS 4000 watts peak to peak Single frequency 400 watts RMS 3200 watts peak to peak Frequency 50 200 kHz Depth 1500 foot max depth Depth capacity is dependent on water salinity bottom type and other water conditions Cleaning and Storage The Fishfinder 250 250C is constructed of high quality materials and does not require user maintenance other than cleaning Clean the unit using a cloth dampened with a mild detergent solution and then wipe dry Avoid chemical cleaners and solvents that may damage plastic components Do not store the Fishfinder 250 250C where prolonged exposure to temperature extre
42. nutes and seconds hddd mm ss s Heading select the reference used in calculating heading information for the the following advanced data fields Bearing Compass Course and Track pages 23 24 True will display data with reference to True North Magnetic will display data with reference to Magnetic North using the magnetic variation value received in the RMC NMEA sentence page 23 Sonar Tab The Sonar tab allows you to initialize settings and calibrations 29 3 e ion Temp Sett Alarms Depth Number mua Fast Sonar Update Keel Offset 0 0 Calibrate Water Speed Main Menu Sonar tab Fishfinder 250 250C Owner s Manual N gt Usinc THE Main Menu The following settings are available AN e Water Type allows you to select either Fresh or Salt to Transducer at surface Faw ensure accurate readings on the unit Sound waves travel at Enter a positive Keel Offset different rates through each type number to show the depth i from the bottom af the keel T Depth Number controls the efficiency of the digital depth update rate Fast Sonar Update updates quicker and is recommended for low noise deeper water gt 50 ft Auto is TY best for shallow water or high noise areas has a slower screen Transducer at bottom of keel_ update and is best used if you travel a wide variety of depths med a i ad o If the unit is unable to track the bottom for any reason the
43. onar page There are 10 main adjustment options available Range Zoom View Gain Target Level Whiteline Frequency Depth Line Noise Reject and Scroll All adjustments may be made by using the ARROW keys and ENTER key The currently selected option will appear in the upper left of the display with up and down arrows on either side of the name Current option Adjustment window Pointer J 5 TORI To change an Adjustment Menu setting 1 Press ADJ MENU to display a list of all options and their current settings The adjustment window automatically disappears when idle for 20 seconds or you may press ADJ MENU to exit 2 Press the Up or Down ARROW keys to highlight the desired option and press ENTER to display the adjustment window 3 Press the Up or Down ARROW keys to move the setting bar or pointer to the desired percentage Off 1 100 setting or range When changing most adjustment settings an open space is displayed on the scale to indicate the Normal or default setting Once set to Normal the setting bar is replaced by the word Normal 4 Press ENTER to accept the new setting and return to the Sonar page Current adjustment setting Normal setting area The current adjustment option is displayed in the upper left comer of the screen For fast adjustment from the Sonar page press the Left or Right ARROW keys to scroll through the options Press the Up or Down ARROW keys to
44. possible to perform some checks with the boat trailered the boat should be in the water to properly test the sonar installation Press the POWER BACKLIGHT key page 13 and the Fishfinder 250 250C should power on If the unit fails to power on verify that the power data cable is seated properly in the back of the unit the Red and Black wires are connected to the correct polarity and the 2 Amp fuse is installed and not blown If the unit is connected to a power supply that exceeds 35 Volts DC a Battery Voltage High warning is displayed and the unit turns off If the unit does not detect a transducer it automatically enters Simulator mode When the unit detects a transducer on initial power up a Please set up transducer message is displayed Press the ENTER key page 13 to select the transducer type Highlight your transducer type with the ARROW keys and press ENTER Press ADJ MENU to return to the Sonar display Since water is necessary to carry the sounder s sonar signal the transducer must be in the water to work properly It is not possible to get a depth distance reading when out of the water As the unit powers on it should immediately start showing the bottom Verify that the unit is not in the Simulator mode If the unit is in the Simulator mode make sure that the transducer is connected properly to the unit When you place your boat in the water CHECK FOR LEAKS around any screw holes that have been added below the
45. pth Cone angles la A may vary among different types of transducers For example LAA a 50kHz frequency may provide a wide 40 cone angle with a B coverage width that is approximately 2 3 of the water depth As ff shown in the diagram on the right the 40 cone angle 50kHz FS frequency approximately covers the area of a 20 foot diameter eee FH E N circle at a 30 foot depth A 200kHz frequency may provide a narrow Sega Nee 20 oot coverage at 30 00 depth 10 cone angle with a coverage width that is approximately 2 10 of the water depth As shown the 10 cone angle 200kHz frequency approximately covers the area of a 6 foot diameter circle at a 30 foot depth When using the Fishfinder 250 250C with Frequency set to Dual the unit alternately transmits 50kHz and 200kHz signals and combines the information This allows the unit to cover a large area and still retain good bottom resolution The unit uses the narrow cone angle 200kHz to display detailed bottom information keeping dead zones to a minimum and the wide cone angle 50kHz for the large coverage area Transducer coverage Fish returns from the wide and narrow beams appear differently on the display The wide beam tends to show longer fish returns than the narrow beam as shown below eo m Wide cone angle Narrow cone angle Fishfinder 250 250C Owner s Manual Basic OPERATION gt UNDERSTANDING SONAR Understanding the Graph It is
46. rN gt 4 n p P pi kba Fishfinder 250 250C high resolution sonar owner s manual Fishfinder 250C shown Copyright 2005 Garmin Ltd or its subsidiaries Garmin International Inc Garmin Europe Ltd Garmin Corporation 1200 East 151 Street Unit 5 The Quadrangle No 68 Jangshu 2 Road Olathe Kansas 66062 U S A Abbey Park Industrial Estate Shijr Taipei County Taiwan Tel 913 397 8200 or 800 800 1020 Romsey SO51 9DL U K Tel 886 2 2642 9199 Fax 913 397 8282 Tel 44 0870 8501241 Fax 886 2 2642 9099 Fax 44 0870 8501251 All rights reserved Except as expressly provided herein no part of this manual may be reproduced copied transmitted disseminated downloaded or stored in any storage medium for any purpose without the express prior written consent of Garmin Garmin hereby grants permission to download a single copy of this manual onto a hard drive or other electronic storage medium to be viewed and to print one copy of this manual or of any revision hereto provided that such electronic or printed copy of this manual must contain the complete text of this copyright notice and provided further that any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited Information in this document is subject to change without notice Garmin reserves the right to change or improve its products and to make changes in the content without obligation to notify any person
47. re receiving valid NMEA input from a GPS unit pages 8 9 or in Simulator mode The following settings are available Time Format choose from 12 or 24 hour military format e Time Zone choose the correct local time zone or enter your UTC Offset The UTC also called Greenwich mean time offset is how many hours you are ahead or behind the time line e Daylight Saving Time choose from Auto On or Off to adjust for daylight saving Current Time and Current Date display current time and date Fields will be blank if not receiving a time from an attached GPS It is not possible to edit these fields Main Menu Time tab Fishfinder 250 250C Owner s Manual PERATION gt UNDERSTANDING SONAR Understanding Sonar If you are unfamiliar with basic sonar or need help determining what appears on the graph this section may benefit you This section is intended to teach the novice user how the Fishfinder 250 250C operates and how it can help improve fishing productivity To understand what the unit is displaying it is important to have a general knowledge of how the unit works and how it determines what to display Basically the unit operates by transmitting sound waves toward the bottom of a lake stream or seabed in a cone shaped pattern When a transmitted soundwave strikes an underwater object such as the bottom a piece of structure or a fish sound is reflected back to the transducer The transducer
48. requency 200kHz 14 Plastic Transom Mount Transducer with Depth and Temp Fishfinder 250 250C Owner s Manual Fishfinder 250C Standard Package 010 00341 00 w o transducer Fishfinder 250C Unit Swivel Mount Bracket and Knobs Power Data Cable Owner s Manual e Self Adhesive Quick Reference Guide e Protective Cover Flush Mount Hardware Kit Fishfinder 250C Optional Package 010 00341 01 includes Standard Package plus Dual Frequency 200 50kHz 10 40 Plastic Transom Mount Transducer with Depth and Temp Separate Speed Sensor Fishfinder 250C Optional Package 010 00341 02 includes Standard Package plus Single Frequency 200kHz 14 Plastic Transom Mount Transducer with Depth and Temp Separate Speed Sensor A NOTE For the most recent list of available accessories for your unit current user manuals and software updates visit our Web site at www garmin com GETTING STARTED gt TRANSDUCERS Transducers The transducer acts as the eyes and ears of your sonar transmitting sound waves toward the bottom in a cone shape Proper transducer selection and installation are important to the operation of your unit Select a transducer that suits the depth of the water that you are on A wide cone angle transducer works best in shallower water providing a large coverage or viewing area but at a decreased bottom resolution In deep water this can result in a large area where fish cannot be see
49. s Transducer Coverage issiccsccsscnssssscsetssctsccsancetasieaccatacieasatensctenect Understanding the Graph Whiteline is citssisisvitssdaiestiats cussisaniics ancien Thermoclines Cleaning and Storage scsssssssssssesssssssssssseeseseessseeeeeeesneees Messages and Alarims cscsssssssssssssesssessssesessesseseeeeseneeeensneees Software License Agreement sssssssssessesseesseeeeeeteeeeeens 38 Limited Warranty cscccssssesssseeeeesessscseeeesesesessseseseeseseseeeeeees 38 NAEK sissiucssurnssinvasiansanisatiatsessachisadsauseasiessssioaiodantialaaineasiaad 40 Fishfinder 250 250C Owner s Manual GETTING STARTED gt PACKING List GETTING STARTED Packing List Before installing and using your Fishfinder 250 250C check to see that your package includes the following items The package part number can be found on the outside of the box If any parts are missing contact your Garmin dealer immediately Fishfinder 250 Standard Package 010 00343 00 w o transducer e Fishfinder 250 Unit Swivel Mount Bracket and Knobs Power Data Cable Owner s Manual e Self Adhesive Quick Reference Guide Protective Cover e Flush Mount Hardware Kit Fishfinder 250 Optional Package 010 00343 01 includes Standard Package plus Dual Frequency 200 50kHz 10 40 Plastic Transom Mount Transducer with Depth and Temp Fishfinder 250 Optional Package 010 00343 02 includes Standard Package plus Single F
50. service contact your local Garmin authorized dealer or call Garmin Product Support for shipping instructions and an RMA tracking Fishfinder 250 250C Owner s Manual APPENDIX gt LIMITED WARRANTY number The unit should be securely packed with the tracking number clearly written on the outside of the package The unit should then be sent freight charges prepaid to any Garmin warranty service station A copy of the original sales receipt is required as the proof of purchase for warranty repairs Garmin International Inc 1200 E 151st Street Olathe Kansas 66062 U S A Tel 913 397 8200 Fax 913 397 8282 Garmin Europe Ltd Unit 5 The Quadrangle Abbey Park Industrial Estate Romsey SO51 9DL U K Tel 44 0870 8501241 Fax 44 0870 8501251 Online Auction Purchases Products sold through online auctions are not eligible for rebates or other special offers from Garmin Online auction confirmations are not accepted for warranty verification To obtain warranty service an original or copy of the sales receipt from the original retailer is required Garmin will not replace missing components from any package purchased through an online auction International Purchases A separate warranty is provided by international distributors for units purchased outside the United States This warranty is provided by the local in country distributor and this distributor provides local service for your unit Distributor warranties are only valid
51. ting the Fishfinder 250 250C choose an appropriately sized location for the unit Use the Flush Mount Template provided in the box to determine a location Check that all cables reach the unit mounting location before beginning installation Always wear safety goggles and a dust mask when drilling cutting or sanding To flush mount the Fishfinder 250 250C Included mounting hardware Four 3mm studs four flat washers and eight 3mm hex nuts Tools not included Center punch drill 1 8 3mm drill bit 3 8 6mm drill bit jig saw 1 16 2mm Allen wrench and 9 32 7mm wrench Trim the Flush Mount Template and tape it in the appropriate location Using a center punch indent the center of each mounting hole location Using a 1 8 3mm drill bit drill the four mounting holes Using a 3 8 6mm drill bit drill a hole for a location to begin cutting the mounting surface Using the jig saw cut the mounting surface along the inside of the dashed line indicated on the template A NOTE Be very careful when cutting this hole there is only a N small amount of clearance between the unit and the mounting holes It may be prudent to cut slightly inside the indicated line and then sand or file the panel as needed to obtain the best fit Install the four mounting studs into the unit by screwing the shorter section into the back of the unit Use a 1 16 2mm Allen wrench to tighten the mounting st
52. tion must not be over any strakes or behind any obstruction on the hull that would create turbulence at speed Fishfinder 250 250C Owner s Manual NOTE Many modern hulls have a prelocated pocket for shoot thru hull transducer installation If you are unsure if your hull is equipped with a pre located pocket contact your hull manufacturer To test the location 1 Fabricate a test device from a section of PVC pipe or a can as shown below Temporarily seal the test device to the hull with caulking or RTV sealer and fill with water or light mineral oil Place the transducer in the liquid pointed directly at the bottom Weight it down Set the unit for optimum performance If the sonar performance is significantly degraded find and test another location Weight transducer PVC Pipe to hold it in place or a Can Fill pipe or can Strip Caulk with water or a or RTV Sealer light mineral oil Hull Testing the Location NG STARTED gt INSTALLATION To permanently install the transducer 1 Lightly sand the surface of the hull and face of the transducer with 400 grit wet or dry sandpaper 2 Build adam using strip caulk about 1 4 6mm tall Pour about 1 8 3mm of two part slow cure epoxy in the dam 3 Place the transducer in the epoxy turning the transducer to work out any air bubbles 4 Weight the transducer in place and allow to cure for 24 hours Testing the Installation Though it is
53. tion of the timer count 26 Fishfinder 250 250C Owner s Manual N gt Usinc THE Main Menu System Tab The System tab controls various system and interface settings 5S Graph Beeper Display Mode Toe Key and Alarm Fishfinder Alarms Language Sn English Units Simulator ot Temp WEA Off Fact Software Version Main Menu System tab The following settings are available e Beeper controls audible beep Select from Off Alarms Only sounds for alarms messages or Key and Alarm sounds for key presses and alarms messages Display Mode select Fishfinder to display the scrolling sonar image on the Sonar page or select Depth Sounder to show only numeric data for Depth Water Temp and Water Speed e Language select from various languages for the unit s on screen display Fishfinder 250 250C Owner s Manual Simulator lets you simulate unit operation using a Depth Only Depth Temp Depth Speed or Depth Temp Speed transducer If prompted choose No to the retail demonstration mode for normal consumer simulator use If the unit does not detect a transducer it will automatically enter Simulator mode While in Simulator mode a Running Simulator message appears after 2 minutes of inactivity NMEA Input Output controls the input output of NMEA 0183 Version 2 3 data to from the unit This setting must be On in order to receive GPS navigational data and send Sonar NMEA data See pa
54. uds until the stops contact the case Be careful not to overtighten as this may damage the mounting stud The studs have a reusable thread locking patch pre applied from the factory Place the unit in position inside the cutout area of the mounting surface Place washers over the mounting studs then thread on one hex nut per mounting stud Tighten all four hex nuts until the unit is snug against the mounting surface Install and tighten the second hex nut on all four mounting studs to lock the first hex nut in place Washer Studs Hex nuts WA Mounting surface as seen from back Fishfinder 250 250C Owner s Manual GETTING STARTED gt INSTALLATION Connecting the Power Data Cable The power data cable connects the Fishfinder 250 250C to a 10 35 Volt DC system and provides interface capabilities for connecting external devices The color code in the diagram page 9 indicates the appropriate harness connections If it is necessary to extend the power data wires use a wire of comparable size and keep your extension as short as possible The unit can be wired directly to your boat s battery or to an unused holder on your boat s fuse block When connecting the unit directly to the battery make sure the 2 Amp in line fuse supplied with the unit is installed If needed use a 2 Amp ACG 3AG replacement fuse If you decide to route power through the boat s fuse block remove the in line fuse holder on the unit s
55. water line DO NOT leave your boat in the water for an extended period of time without checking for leaks Begin testing the installation at a slow speed If the sonar appears to be working properly gradually increase the boat s speed while observing the sonar s operation If the sonar signal suddenly is lost or the bottom return is severely degraded note the speed at which this occurs Return the boat to the speed the signal was lost Make moderate turns in both directions and see if the signal improves If the signal strength improves while turning adjust the transducer so that it extends another 1 8 3mm below the transom of the boat It may take several adjustments to eliminate the degradation If the signal does not improve it may be necessary to move the transducer to a different location NOTE When adjusting the depth of the transducer make the adjustments in small increments Placing the transducer too deep can adversely affect the boat s performance and put the transducer at greater risk of striking underwater objects Fishfinder 250 250C Owner s Manual Basic OPERATION gt USING THE KEYPAD Basic OPERATION A NOTE Press and release a key to activate its primary function Pressing and holding a key activates its secondary function if available Using the Keypad The keypad contains the following keys ARROW Keys press to select highlight menu options and enter data Press to control move

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