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Fishfinder 340C Owner`s Manual

1. To mount the transducer on a trolling motor 1 10 Slide the large cable tie through the slot on the transducer mount see the illustration on page 9 with the ridges of the band facing up until equal lengths extend on both sides of the mount NOTE For cold water or heavy timber or debris areas a metal 4 5 worm gear clamp is recommended Position the mount gasket on the curved top of the transducer mount Front of the transducer Place the transducer assembly against the motor body of the trolling motor with the front of the transducer pointed away from the trolling motor propeller Wrap the two ends of the cable tie around the motor body Place the pointed end of the cable tie through the fastener hole on the opposite end and pull it through until it is snug but not tight The cable tie clicks when you pull it Position the transducer so that it is parallel with the bottom when in use and make sure the gasket is aligned properly Pull the cable tie end until tight Trim off the excess if necessary Tighten the 10 32 locking nut until it touches the mounting bracket and then tighten 1 4 turn more Do not overtighten Route the 30 foot 9 m transducer cable using the supplied cable ties to secure the cable to the motor shaft You can fill the forward facing portion except the cable tie pocket of the transducer mount with sealant to avoid accumulating debris Fishtinder 340C Owner s Manual INSTALL
2. 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 45 Symbols 200 kHz frequency 2 2X zoom 36 50 kHz frequency 2 A A scope 37 accessories 1 42 adj menu key 22 adjustment menu 34 for the split sonar page 24 alarms 30 43 alarms tab 30 anti reflective coating 11i arches 4 assembling the transducer 9 automatic scroll speed 28 auto color gain 28 B backlight key 22 backlight setting 21 basic display 37 battery alarm 31 beam 35 bearing 38 beeper 32 bottom of the water 4 46 bracket assembly 6 brg bearing
3. Strip caulk or a light mineral oil or RTV sealer Hull surface Testing the Location INSTALLING THE FISHFINDER 340C gt MOUNTING THE TRANSDUCER 14 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 Build a dam using strip caulk about 1 4 6 mm tall Pour about 1 8 3 mm of two part slow cure epoxy into the dam Place the transducer in the epoxy turning the transducer to work out any air bubbles Weight the transducer in place and allow it to cure for 24 hours Fishtinder 340C Owner s Manual INSTALLING THE FISHFINDER 340C gt INSTALLING THE WIRING HARNESS Installing the Wiring Harness To install the wiring harness The Fishfinder comes with a wiring harness that connects the 1 Use a test light or voltmeter to determine the polarity of the Fishfinder to power and the transducer with one easy to remove voltage source connection and provides interface capabilities for connecting 2 Connect the Red or positive wire to the positive voltage external devices The color code in the diagram see page 17 terminal If you use the boat s fuse block route the positive indicates the appropriate harness connections The replacement connection through the fuse as shown on the diagram fuse is a AGC 3AG 3 Amp fuse If it is necessary to extend the 3 Connect the Black or ground wire to the negative voltage
4. learn the operating procedures This manual includes the following Introduction contains the Table of Contents product registration contact and cleaning information Getting Started provides general information that can help you before you install and use your Fishfinder 340C Installing the Fishfinder 340C covers the installation and testing for the Fishfinder 340C Using the Fishfinder 340C provides details about the features and operations of the Fishfinder 340C Appendix contains information such as specifications optional accessories and messages that might appear You can also find warranty information in the Appendix Index helps you quickly find information in this manual This manual uses the term Warning to indicate a potentially hazardous situation which if not avoided could result in death or serious injury This manual uses the term Caution to indicate a potentially hazardous situation which if not avoided may result in minor injury or property damage It may also be used without the symbol to alert you to avoid unsafe practices INTRODUCTION gt TABLE OF CONTENTS TABLE OF CONTENTS Using the Fishfinder 340C ee eeesseseeseessenssenseeeees 21 Learning the Basic Functions cscsscsssesssseeseseeeees 21 tO MDUCHION eoccccccccccccccccccccccccccccccccececcccceccccceccccececcececcececececcec i Using the Fishfinder 340C Keypad cccssssssssesseeens 22 About This Manual
5. 1 4 turn more Do not overtighten 5 Place the first cable clamp on the transducer cable approximately one third of the distance between the transducer and the top of the transom 12 Mark the location Using a 1 8 bit drill a pilot hole approximately 3 8 10 mm deep 6 Attach the cable clamp using a 4 x 12 mm screw Coat the screw with marine sealant before installation Repeat steps 5 and 6 using the other cable clamp 7 Route the transducer cable as needed to the Fishfinder DO NOT CUT THE CABLE Avoid routing the cable with electrical wires or other sources of electrical interference Drill pilot holes here Align with the transom bottom The transducer should extend 1 8 below fiberglass hulls or 3 8 below aluminum B om hulls SE Bottom of the tran Vertical Fishfinder 340C Owner s Manual INSTALLING THE FISHFINDER 340C gt MOUNTING THE TRANSDUCER Shoot Thru Hull Installation To avoid drilling a hole to mount a thru hull transducer a transducer can be secured with epoxy inside a boat shoot thru hull installation This type of installation can provide better noise reduction 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 Contact your boat manufacturer if you are unsure Professional installation might be necessary Be sure to always wear a dust mask and safety gog
6. 38 C cables 5 calibrate water speed 29 CANet i case cleaning the 111 change a setting 26 changing the data fields on the num bers page 26 cleaning the case 11i cleaning the screen iii clutter 4 enfg key 22 cog course over ground 38 color 4 color bar 37 color scheme 27 contact Garmin 1il current time and current date 34 custom range 27 D data cnfg key 22 data fields 24 26 37 date 34 daylight saving time 34 dcog desired course over ground 38 Declaration of Conformity 45 defaults 32 definitions data field 38 depth 24 33 35 37 41 depth line 36 depth units 33 distance units 33 dist next distance to next 38 dpt depth 38 drift alarm 31 dual beam 3 dual frequency 2 24 E enable NMEA input output 40 enter key 22 extended data setup 37 extended display 37 F factory settings 32 field definitions 38 fish alarm 31 fish symbols 4 27 flasher page 25 flush mounting the fishfinder 7 frequency 36 200 kHz 2 50 kHz 2 fuse 15 42 gain 35 37 gain key 22 gain setting 4 GPS wiring toa 16 graphs auto gain 28 Whiteline 35 graph tab 27 H hardness of the bottom 4 hard bottom 25 hard structure 4 heading 33 immersion water iii input voltage 15 installation 20 installation shoot thru hull 13 installing the unit on the mount bracket 7 the wiring harness 15 installing the fishfinder 5 interfacing 16 K keel offset 28 keypad using the 21 22 Fishfinde
7. ROCKER to select On Press ENTER On appears in the field 5 Press QUIT to return to the previous page 40 i From a Sonar Page hold PAUSE for two seconds The Fishfinder is now in Pointer mode Use the ROCKER to move the cursor around on the screen Information about the Pointer location appears on the screen Press QUIT to resume normal scrolling jist 3 f fn 16 Fishfinder 340C Owner s Manual To mark an underwater waypoint 1 Make sure that your Garmin GPS or compatible NMEA navigation device is properly attached and the NMEA Input Output is On see page 32 2 Froma Sonar Page press and hold PAUSE to enter Pointer mode and pause the screen movement 3 Use the ROCKER to move the cursor onto the target for example an underwater drop off or stump that you want to mark Data appears with the GPS coordinates depth and surface temperature for that location 4 Press ENTER The New Waypoint Window appears with a default four digit name and the pointer s coordinates automatically filled in i i ji i i cane i a Fishtinder 340C Owner s Manual USING THE FISHFINDER 340C gt MarKING A WAYPOINT To change the name highlight the name field and press ENTER Make your changes using the ROCKER Alphabetic and numeric characters are available Press ENTER when you are finished Use the ROCKER to move the field highlight to OK and press ENTER The Fishfinder then sends a N
8. additional formats are The Units tab enables you to define the units of measure available latitude longitude in decimal degrees hddd ddddd and latitude longitude in degrees minutes and seconds hddd mm ss s e Heading sets the reference used in calculating heading information for the Bearing Compass Course and Track Advanced Data fields see page 37 True shows data with reference to True North Magnetic shows data with reference to Magnetic North using the magnetic variation value received in the RMC NMEA sentence see page 16 Time Tab Use the Time tab to show the current time and date adjust the 12 The following settings are available or 24 hour time format enter a time zone and adjust for daylight Depth lets you select the units of measure for depth in saving time to show correct local time The time appears only if Feet ft Fathoms fa or Meters m you are receiving valid NMEA input from a GPS unit see page 16 l or if the Fishfinder is in Simulator mode e Temperature lets you select the units of measure for temperature in Fahrenheit F or Celsius C e Distance and Speed lets you select the units of measure for distance and speed readouts in Nautical nm ft kt Nautical nm m kt Statute mi mh or Metric km kh Position Format changes the coordinate system in which a position reading appears The default format is latitude and longitude in degrees minutes and thousan
9. e Power and ground wires require 18 AWG You can extend the CANet wiring of the GSD 22 power data cable up to 80 ft 24 38 m total length using the CANet Connections Kit e The CANet Extension Cable can support a maximum of two display units and one sonar unit e The maximum length of cable from the CANet Extension Cable to the sonar or display units is 6 ft e Refer to the chartplotter s installation instructions for wiring the GPS 17 sensor and other devices e Ground the drain wire on the first display unit Do not ground the drain wire on the subsequent display units or the sonar unit e The CANet Extension Cable Black wire is reserved for future use When inserting a CANet unit on the CANet Extension Cable reconnect all wires according to their color Fishfinder 340C Owner s Manual INSTALLING THE FISHFINDER 340C gt INSTALLING THE WIRING HARNESS CANet See the CANet Terminator CANet Terminator Connection Diagram Below Terminator p Ss GREEN CANet Fishfinder Extension Cabe fAs Ctswmw we eS CANE EN Compatable Garmin GPS Unit BATTERY 10 35 VOLTS DC CANet Terminator Connection 3 Wire Connector To CANet Compatable To Fishfinder 340C 7 Garmin GPS Unit 7 a The CANet Extension Cable can be cut to any length 1 ft 18 to 80 ft and a CANet compatible device can be inserted He CANet on the cable at ao between the two CANet CANet HE
10. objects The depth of the line appears on the right side of the line Press up or down on the ROCKER to control the position of the line on the Sonar Pages Move the slider to the top to turn off Depth Line Zoom sets a screen zoom scale The following settings are available Off turns off the Zoom function 2x Zoom increases the graph zoom level 2x 4x Zoom increases the graph zoom level 4x Btm Bottom Lock sets the Bottom Lock returns from the bottom up picture When using this setting BL appears at the bottom of the screen Zoom View available when you select a Zoom scale other than Off You can use the Zoom View setting to change the viewing range of a zoomed display Auto follows the water bottom If you select Bottom Lock use the Span setting to adjust how far off the bottom the Fishfinder shows data Fishtinder 340C Owner s Manual USING THE FISHFINDER 340C gt CoNFIGURING ADVANCED DATA FIELDS e Tools controls the appearance of useful sonar tools The Configuring Advanced Data Fields following options are available The top left corner of the screen contains configurable data fields A scope when you turn on A scope a vertical flasher for the Sonar Pages You can view basic or advanced data for these bar appears on the far right side of the screen This flasher data fields By default the Basic configuration shows the depth indicates structure and bottom returns much the same as the water tempe
11. power wires use 22 AWG wire DO NOT cut the transducer cable terminal because this voids your warranty If your boat has an electrical 4 Install or check the 3 Amp fuse on the boat s fuse block or system you might be able to wire the Fishfinder directly to an in the in line holder unused holder on your current fuse block If you are using the 5 Align the notches on the cable plug and on the back of the boat s fuse block remove the in line fuse holder supplied with the Fishfinder Insert the cable into the connector and turn the Fishfinder You can also wire the Fishfinder directly to the battery lock ring counter clockwise until it stops CAUTION The Fishfinder input voltage is 33 volts DC Do ye To 10 33 volt boat supply not exceed this voltage because this can damage the Fishfinder 2A and void the warranty Boat ground i a sain A NOTE During a typical installation use only the Red and r ji Black wires The other wires do not have to be connected oD PpD for normal operation of the Fishfinder unit For information il on connecting to a NMEA or CANet compatable device see pages 17 19 TO Fishfinder 340C Fishfinder 340C Owner s Manual 15 INSTALLING THE FISHFINDER 340C gt INSTALLING THE WIRING HARNESS The Fishfinder 340C can be connected to another piece of NMEA compatible electronic equipment such as a Garmin GPS Global Positioning System device I
12. prop On twin drive boats mount the transducer between the drives if A NOTE DO NOT mount the transducer behind strakes struts possible fittings water intake or discharge ports or anything that creates air bubbles or causes the water to become turbulent The transducer must be in clean non turbulent water for optimal performance Fishfinder 340C Owner s Manual 11 INSTALLING THE FISHFINDER 340C gt MOUNTING THE TRANSDUCER Tool List not included drill 3 8 wrench or socket 5 32 and 1 8 drill bits masking tape 2 Phillips screwdriver and marine sealant To mount the transducer on a transom 1 Position the transducer mount at the selected transom location Make sure the transducer is parallel with the water line Mark the center locations of each hole on the transducer mount 2 Using a 5 32 bit drill the pilot holes approximately 1 25 mm deep at the marked locations To avoid drilling the holes too deep wrap a piece of tape around the bit at 1 from the point of the bit 3 Apply marine sealant to the 5 x 30 mm screws Attach the transducer assembly to the transom using the 5 x 30 mm screws Adjust the transducer assembly to extend beyond the bottom of the transom approximately 1 8 3 mm on fiberglass hulls or 3 8 10 mm on aluminum hulls Adjust the transducer assembly to be aligned parallel with the water 4 Tighten the 10 32 locking nut until it touches the mounting bracket and then tighten
13. returns might not always appear as perfect arches due to the speed fish orientation or other conditions You can turn on the Fish Symbols setting if you want to see suspended targets indicated by a fish shape The strength of the sonar return can also help you interpret the hardness of the bottom of the water The thicker the bottom line the harder the bottom ae fay 3j Poe r a Hard Structure Soft Structure Fishfinder 340C Owner s Manual INSTALLING THE FISHFINDER 340C gt SELECTING A LOCATION FOR THE FISHFINDER INSTALLING THE FISHFINDER 340C To ensure the successful operation of your Fishfinder 340C you must properly install the Fishfinder and all of its related parts To install and use your Fishfinder you must do the following 1 Select a proper location for the Fishfinder 2 Mount the Fishfinder 3 Install your transducer 4 Connect to your power source 5 Test the installation Each of these steps is described in detail in the following sections Selecting a Location for the Fishfinder Consider the following when you select an installation location Provides optimal viewing as you operate your vessel Allows easy access to the unit s keypad Is strong enough to support the weight of the Fishfinder and protect it from excessive vibration or shock Allows room for the routing and connection of the power data and transducer cables There should be at least a 3 inch 8 cm clearance
14. setting You can also set the Color Gain manually If Frequency is set to Dual you can set the Color Gain separately for each frequency 50 kHz and 200 kHz Beam only appears when using a dual beam transducer This controls the angle of the transducer beam Wide beam allows you to see more fish in shallow water even off the sides of the boat You can also choose Narrow default beam Whiteline can make it easier to identify the hardness of the bottom hard or soft This setting adjusts a brightly colored highlight of the strongest signal area of the bottom 35 USING THE FISHFINDER 340C gt USING THE ADJUSTMENT MENU Off default all high intensity bottom returns appear as a solid color 36 Whiteline Turned Off Whiteline Turned On On the strongest signal from the bottom appears as a bright color e Frequency only appears when using a dual frequency transducer This allows you to choose a sonar operation frequency You can choose 200 kHz 50 kHz or Dual frequency to alternate between the two frequencies e Scroll adyjusts the rate at which the Sonar Pages scroll from right to left Ultrascroll default is used when you select a scroll rate from 90 to 100 Auto automatically adjusts the scroll rate according to the boat s speed See also Automatic Scroll Speed Limit on page 28 Depth Line adds a horizontal depth line across the screen that is used to measure the depth of underwater
15. t Read Voltages That Low Limited to Bottom of Range the voltage value in the Battery Alarm setup is lower than the voltage where the unit automatically turns off Can t Send Waypoint the unit cannot transmit the waypoint using the NMEA WPL sentence Check the wiring Deep Water Alarm the Deep Water Alarm depth has been reached Drift Alarm the depth has changed by the amount of the Drift Alarm value Fish Alarm an icon appears and a beep sounds if enabled when a fish 1s detected This alarm does not show a message banner NMEA Depth Is Below Transducer you must enter an appropriate Keel Offset for the transducer Fishtinder 340C Owner s Manual APPENDIX gt MESSAGES AND ALARMS Shallow Water Alarm the Shallow Water Alarm depth has been reached Simulating Operation 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 Sonar Failed Unit Needs Repair there is an internal problem with the Fishfinder 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 there is not a transducer attached bad cable transducer or the transducer cable was disconnected If the transducer cable is removed while the unit is on reconnect and cycle power Water Speed Sensor Is N
16. turn on NMEA Input Output to receive this data see page 32 To toggle the data field appearance Press and release the DATA CNFG key to alternate between the Basic and Advanced data field configurations To change or add an advanced data field 1 Press and hold the DATA CNFG key to access the Advanced Data Menu The current configuration appears on the left side of the screen The available data field options appear on the right side 2 Use the ROCKER to select the Wide or Narrow tab 3 Press down on the ROCKER to select the slider Then press left or right to determine the quantity of fields of that size 4 Press down on the ROCKER to select a field that you want to change Press ENTER to see your choices Press ENTER again to select your choice Your choice appears as a new data field Repeat this step for each field you want to change 5 When you are finished press QUIT to exit the Advanced Data Menu Your new choices appear on the screen 38 Data Field Definitions BRG bearing the compass direction from a location to a destination measured to the nearest degree When using a GPS receiver bearing usually refers to the direction to a waypoint from your current location COG course over ground your direction of movement relative to a ground location DCOG desired course over ground the compass course between the from and to waypoints DIST NEXT distance to next the length from your cu
17. 0C Owner s Manual 17 INSTALLING THE FISHFINDER 340C gt INSTALLING THE WIRING HARNESS Installing the Fishfinder 340C to a Garmin CANet The Fishfinder 340C is a CANet compatible sonar device Using the CANet if applicable optimizes the performance of CANet compatible units allowing sonar information from the Fishfinder 340C to be shared with up to two CANet compatible Garmin GPS units A standard NMEA connection only allows depth temperature and speed information to be sent to a single GPS device where a CANet connection provides full sonar readings including Ultrascroll so you can view and control the same information on your compatible GPS unit s as you can on your Fishfinder 340C Included Equipment in a CANet Kit 40 ft 12 19 m CANet Extension Cable e 2 CANet Terminators 7 3 Wire Connectors you need to obtain a CANet Kit Contact your Garmin dealer or visit www garmin com well If you need additional help please contact Garmin Product Support 18 NOTE To use the Garmin CANet with your Fishfinder 340C NOTE The CANet Kit contain installation instructions as To install the 3 Wire Connector 1 Insert up to wires into the 3 wire connector Do not strip the wire insulation See the CANet Terminator Connection diagram on the next page 2 Use a standard pair of pliers to fully depress the red button into the connector 3 Wipe the excess water repellent gel from the connection CANet Notes
18. IN CANet Terminator Terminator erminators Terminator 4 y Fishfinder 340C CANet Wiring Diagram 19 Fishfinder 340C Owner s Manual INSTALLING THE FISHFINDER 340C gt TESTING THE INSTALLATION Testing the Installation While it is possible to perform some checks with the boat trailered the boat should be in the water to properly test the sonar portion of the installation To test the installation 1 Press and hold the Power Backlight key until the Fishfinder beeps It should turn on If the Fishfinder fails to turn on verify that the wiring adapter is properly connected in the back of the Fishfinder the Red and Black wires are connected to the correct polarity and that the 3 Amp fuse is installed and not blown If the Fishfinder is connected to a power supply that exceeds safe operating levels a Battery voltage is too high warning appears and the Fishfinder turns off in 10 seconds If the Fishfinder does not detect a transducer it automatically enters Simulator mode see page 42 2 When the Fishfinder detects a transducer at initial start up a Select Transducer Type window appears Press ENTER to select the transducer type 3 Use the ROCKER to select your transducer type and press ENTER 4 Press QUIT to return to the Sonar Page 20 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 underwat
19. ING THE FISHFINDER 340C gt MOUNTING THE TRANSDUCER Mounting the Transducer on a Transom When selecting a transom mount location consider the following for optimal performance e For your sonar to operate properly the transducer must be located in calm water DO NOT mount the transducer behind strakes rivet lines struts fittings water intake discharge ports eroding paint or anything that creates turbulence o gt Mount the transducer cable cover well above the T waterline Apply marine sealant to all screw threads to prevent water from seeping into the transom Mount the transducer as close to the center of the boat as possible 7 Transducer should extend I gt 1 8 below fiberglass hull DO NOT cut the transducer lead This voids your warranty 3 saed aluminum huls Ls 4 x e DO NOT mount the transducer in locations where it might il Pe aa C be jarred when launching hauling trailering or storing Dis C gt at high speed Da Do not mount the transducer directly in the e DO NOT mount the transducer in the path of the prop on a cael pone eee ae 3 M h d llel with the b l cavitation tnat may aegraaqe the poats single drive boats The transducer can cause cavitation that CU e Mansducer Parallel witi tne potom performance and damage the prop can degrade the boat s performance and damage the
20. MEA WPL sentence to an attached GPS unit or NMEA navigational device 41 APPENDIX gt SPECIFICATIONS AND OPTIONAL ACCESSORIES APPENDIX Specifications Physical Specifications Size 6 2 H x 6 3 W x 3 1 D 15 8 cm x 16 0 cm x 8 3 cm Weight 2 25 Ibs 1 02 kg Display 5 0 diagonal 12 7 cm 4 0 H x 3 0 W 256 color TFT display with adjustable brightness 234 x 320 pixels Case Fully gasketed high impact plastic alloy waterproof to IEC 529 IPX7 standards Temp Range 5 F to 131 F 15 C to 55 C Power Source 10 33v DC Usage 17 watts max at 10v DC 15 watts at 13 8v DC nominal Fuse AGC 3AG 3 0 Amp Sonar Power Dual frequency 500 watts RMS 4 000 watts peak to peak Dual beam 400 watts RMS 3 200 watts peak to peak Frequency 50 200 kHz dual frequency 80 200 kHz dual beam Depth 1 500 feet dual frequency 900 feet dual beam Depth capacity is dependent on water salinity bottom type and other water conditions 42 Using Simulator Mode You can use Simulator mode to practice and learn the operation of the Fishfinder If the Fishfinder does not detect a transducer it automatically starts in Simulator mode While in Simulator mode the Fishfinder shows a bottom scene and you can control the Fishfinder except the Gain and Auto Gain options If no keys are pressed for two minutes the Fishfinder automatically resets to default settings while in Simulator mode To exit Simu
21. Owner s Manual Fishfinder 340C wA CEtUICO COLICI SCENEI 2005 2006 Garmin Ltd or its subsidiaries Garmin International Inc Garmin Europe Ltd Garmin Corporation 1200 East 151 Street Unit 5 The Quadrangle Abbey Park Industrial Estate No 68 Jangshu 2 Road Shijr Taipei County Olathe Kansas 66062 USA Romsey SO51 9DL UK Taiwan Tel 913 397 8200 or 800 800 1020 Tel 44 0 870 8501241 outside the UK Tel 886 2 2642 9199 Fax 913 397 8282 0808 2380000 UK only 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 or organization of such changes or imp
22. SONAR OR FLASHER PAGE Pausing a Sonar or Flasher Page Use a paused screen to take a better look at sonar returns The depth continues to update while the page is paused but the Fishfinder does not show any new sonar data until the Sonar Page resumes scrolling You might see a discontinuity from where the sonar information stops to where it starts again when you resume scrolling the screen To pause and unpause the Sonar or Flasher Page From the Sonar or Flasher Page press PAUSE to stop the scrolling Press PAUSE again or QUIT to resume scrolling 39 USING THE FISHFINDER 340C gt MARKING A WAYPOINT To start or stop Pointer mode on a Sonar Page Marking a Waypoint You can use Pointer mode to move a cursor around on the paused Sonar Page to reference sonar items and mark waypoints for that location 1f your Fishfinder is attached to a Garmin GPS or compatible NMEA navigation device see page 16 When you use Pointer mode a data field appears at the top of the graph with the cursor s depth surface temperature for that location and GPS coordinates if available This makes it easy to save the location of an underwater object such as a stump rock or brush pile which you can navigate back to with your GPS receiver To enable NMEA input output Press and hold ADJ MENU The Main Menu appears 2 Use the ROCKER to select the System tab 3 Use the ROCKER to select the NMEA Input Output field Press ENTER 4 Use the
23. at is not moving fast enough or the speed a speed capable transducer sensor Calibration is required sensor is not registering a speed a Boat Is Not Moving Fast to ensure that the water speed shown on your Fishfinder is Enough To Calibrate message appears at the bottom of the accurate The Fishfinder automatically uses GPS ground screen Check that the speed sensor wheel is moving or safely speed if available using NMEA input for comparison on increase boat speed If there is a problem with the Fishfinder the calibration If a GPS ground speed is not available use speed sensor or if a speed senor is not installed a Water either your boat s speedometer reading not always accurate Speed Sensor Is Not Working message appears at the bottom of the screen Check the connections of the speed sensor cables or a stopwatch to determine your speed over a certain ea a a Seas distance distance time speed It is recommended that the calibration take place in water having little or no current To calibrate the water speed 1 Use the ROCKER to highlight Calibrate Water Speed and press ENTER 2 Bring the boat to a cruising speed Both the top GPS ground speed and uncalibrated water speed appears at the bottom of the calibration window Note your top speed then stop the boat and press ENTER 3 By default the top speed automatically appears in the What was your top water speed field If a ground speed is not available th
24. ategory and data field that 4 Highlight the setting you want and then press ENTER The you want to appear on the screen in that position and press new setting is now active ENTER Your changes to the Main Menu settings are used until you go to 4 Make all changes When you are finished press QUIT the Main Menu and set the System Factory Settings option to Yes 26 Fishfinder 340C Owner s Manual Graph Tab The Graph tab enables you to determine the appearance of the Sonar Pages The following settings are available Fish Symbols sets how the Fishfinder interprets suspended targets and background information If you select a fish symbol the Fishfinder identifies some returns for you by replacing them with fish symbols in large medium and small sizes based on the size of the sonar return If you are using dual beam fish symbols from the narrow beam directly underneath your boat are solid and the returns from the wide beam out to the sides of your boat are hollow Ep default the Fishfinder does not interpret the sonar AE return data suspended targets appear as symbols No background information appears H suspended targets appear as symbols with no d background information shown The target depth is indicated Fishfinder 340C Owner s Manual USING THE FISHFINDER 340C gt Usine THE Main MENU suspended targets appear as symbols Background information appears making the distinction between fish and
25. be used for console or overhead mounting Mounting the Bracket Assembly Tools not included drill screwdriver Phillips or standard and one of the following Three 8 4 mm pan head machine bolts with matching nuts and washers and a 5 32 5 mm drill bit Three 8 pan head self tapping screws and a 1 16 drill bit for drilling starter holes Use a pan head machine bolt or self tapping screw to secure the swivel base If you use a screw with a countersunk head you risk damaging the mounting bracket To mount the bracket assembly iL Using the swivel base as a template mark the location of the three holes that secure the bracket to the mounting surface Drill the mounting holes e If you secure the base with machine bolts drill three 5 32 5 mm holes at the locations you marked e If you secure the base with self tapping screws drill starter holes at the locations you marked Do not make the starter holes deeper than half the screw length Secure the swivel base with three bolts or screws DO NOT OVERTIGHTEN Place the swivel mount bracket over the swivel base and secure it with the short knob Fishfinder 340C Owner s Manual Installing the Unit on the Mounting Bracket To install the Fishfinder on the mounting bracket 1 Align the slot on the back of the Fishfinder with the long mounting knob and slide the Fishfinder into place If necessary adjust the long knob to spread the bracket arms a
26. behind the case Fishfinder 340C Owner s Manual DO NOT mount the unit in an area that is exposed to extreme temperature conditions A NOTE The temperature range for the Fishfinder 340C is 5 F to 131 F 15 C to 55 C Extended exposure to temperatures exceeding 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 manufacturer s limited warranty To get the best possible performance from your Fishfinder 340C e Read the instructions first and then follow the instructions to install the unit e Gather the appropriate fasteners and tools e Verify that all cables can reach the unit mounting location and the transducer e Wear safety goggles and a dust mask when drilling cutting or sanding If you experience difficulty installing the unit contact Garmin Product Support or contact a professional installer INSTALLING THE FISHFINDER 340C gt MOUNTING THE FISHFINDER Mounting the Fishfinder There are two possible installation methods for your Fishfinder You can mount the Fishfinder onto a bracket that attaches to the console or overhead You can flush mount the Fishfinder into a flat panel Surface Mounting the Fishfinder The Fishfinder 340C s compact waterproof case is suitable for mounting in exposed locations or at the nav station The Fishfinder comes with a tilt swivel mounting bracket that can
27. bottom 25 soft structure 4 sog speed over ground 38 sonar 2 sonar page 23 sonar sub tab 31 sonar tab 28 sound waves 2 span 36 specifications 42 speed units 33 split sonar page 24 adjustment menu for 24 split zoom 24 storage ili strongest sonar returns 4 stw speed through water 38 surface clutter 4 surface mounting the fishfinder 6 swap split 37 swivel base 6 swivel mount bracket 7 symbols fish 27 system sub tab 31 system tab 32 T target level 35 temperature 27 temperature graph 37 temperature log 30 temperature range for the fishfinder 5 temperature tab 30 temperature units 33 testing the installation 20 testing the transom mount installa tion 21 time 34 timer 31 39 time time of day 39 time duration 30 time format 34 time tab 33 time zone 34 4 tools 37 transducer 2 13 transducer assembling the 9 transducer cables 5 transducer type 28 transom 12 transom mounting ona 11 transom mount installation 20 trolling motor mounting ona 10 turn 39 turn on or off the fishfinder 21 U underwater waypoints 41 units tab 33 using the keypad 22 V view 36 vmg velocity made good 39 volt 39 voltage 15 W warranty 44 water immersion 111 water speed 27 29 37 water temperature 37 water temperature alarm 31 waypoint 41 waypoint marking a 40 48 weakest returns 4 whiteline 35 wide beam 3 35 wide data fields 37 wiring harness 15 16 wiri
28. ccsscssscssssssssscsssssssssssssessessssssesseessssseeseessses i Understanding the Main Pages 23 Product Registration c ccssssssssssssssssssssssssssssssesssssses ii Using the Main Menu sssssssssssssesenennenrerenensnenonosnsssssnnnnnnnnnns 26 Contact Garmin cccccsssssssssssssssssscscsesscsesecsesecscsscersesacseseracsenes iii Using the Adjustment Menu cssscsseseseeneeseteensseensetens 34 Caring for the Fishfinder ccscssssssssssssssssessssessesseessessees ii Configuring Advanced Data Fields 37 Wabi E E OAA E A T iv Pausing a Sonar or Flasher Page s ssssssssessessesen 39 Getting Startedhcccccsssccsssssscsssssscssssesscsnsssseenssessesnssseeesne 1 Marking a VAY OUI ss scniccescxtannstucsodsctnnsastisiecessaesaanatevexvansiecners 40 PACKING ISU annann a A Appendix ssessiscesdacctcesevesstccusecsttsntsentstesnseevesetasiecenennvereseeasieont 42 Optional VNo d 3 1 Specifications a a 42 Understanding the Fishfinder and SOain 2 Optional PACCESS OMICS cs sssescscavassetivscanannasesnavsaatnninacnacannnnaantannnt 42 Installing the Fishfinder 340C cccsscsssccsssssscsosessccsssesseresse 5 ice rea ENEP A EIE A A E T a Selecting a Location for the Fishfinder ssssesesee 5 Software ea Agreement 45 Mounting the Fishfinder cccssssesecseeseesessesseesensenseeees I T SSS IS Mounting the Transducer csecsssssscerssesseserstsesseserseeeees Qi NINO srrvscnscessnntstantassintasanetinsiiotecns
29. creen is a scale that reflects the depth of the area shown The most intense solid colors indicate the strongest sonar returns red is the default The weakest sonar returns appear in the least intense color blue is the default For more information on understanding the sonar read the Getting Started section of this manual see page 2 Using Split When Zoomed You can set your Fishfinder to split the screen every time use the Zoom option on a full screen Sonar Page Fishfinder 340C Owner s Manual To split the screen 1 From a Sonar Page press ADJ MENU The Adjustment Menu appears Use the ROCKER to select Split When Zoomed and press ENTER Use the ROCKER again to select On and press ENTER The current page is now a split screen If the Zoom option was set to Off the last used Zoom setting is used for one side of the split screen and the other side of the screen is not zoomed If the screen does not split select a setting other than Off for the Zoom option If Zoom contains a setting other than Off the current Zoom setting is used for half of the screen and the other side is not zoomed Fishtinder 340C Owner s Manual USING THE FISHFINDER 340C gt UNDERSTANDING THE MAIN PAGES Using the Flasher Page If you prefer the appearance of flasher sonars use the Flasher Page It provides an almost instantaneous return of what is below your boat See Using the Adjustment Menu on page 35 for
30. d 30 foot cable Optional Package 010 00505 03 with Worldwide Language Support Standard package e Dual frequency 200 50kHz plastic transom mount transducer with depth and temperature and an attached 30 foot cable Optional Accessories The following optional accessories are available at www garmin com e Speed sensors e Quick release flush mount kit e CANet connection kit e Optional transducers and transducer accessories GETTING STARTED gt UNDERSTANDING THE FISHFINDER AND SONAR Understanding the Fishfinder and Sonar The Fishfinder 340C is a fully automatic color sonar unit that allows you to go out on the water and find fish without having to configure a lot of settings However you can customize each setting as you prefer If you have used a Fishfinder before you might already know how to interpret the sonar information on the screen so you can skip this section If you have not used a Fishfinder before you might want to learn a bit about sonar what it 1s how it works and what you might see on the Fishfinder 340C screen This manual provides a general understanding of those things that you need to know about sonar that can help you interpret the screen and find the fish Understanding Sonar During installation you connect your Fishfinder 340C to a transducer The transducer uses sound to determine information about what is in the water beneath your boat Then the transducer sends the information to your Fi
31. different location Fishtinder 340C Owner s Manual USING THE FISHFINDER 340C If you are turning on your Fishfinder 340C for the first time use the following procedure If you have already turned on your Fishfinder and you are just familiarizing yourself with the basic functions please go to Learning the Basic Functions on this page To start your Fishfinder for the first time 1 Press and hold the Power Backlight key until the Fishfinder beeps It should turn on If the Fishfinder fails to turn on verify that the wiring adapter is properly connected in the back of the Fishfinder the Red and Black wires are connected to the correct polarity and that the 3 Amp fuse is installed and not blown If the Fishfinder is connected to a power supply that exceeds safe operating levels a Battery voltage is too high warning appears and the Fishfinder turns off If the Fishfinder does not detect a transducer it automatically enters Simulator mode see page 42 2 When the Fishfinder detects a transducer at initial start up a Select Transducer Type window appears Press ENTER 3 Use the ROCKER to select your transducer type and press ENTER 4 Press QUIT to return to the Sonar Page Fishtinder 340C Owner s Manual USING THE FISHFINDER 340C gt TESTING THE INSTALLATION Learning the Basic Functions To turn the Fishfinder on or off Press and hold Power Backlight to turn the Fishfinder on or off To change the so
32. dths of a minute Fishfinder 340C Owner s Manual 33 USING THE FISHFINDER 340C gt USING THE ADJUSTMENT MENU 07 05 40 14 AUG 99 The following settings are available Time Format lets you choose from 12 hour 24 hour military or UTC also called Greenwich Time format e Time Zone lets you choose your time zone to show the correct local time Daylight Saving Time lets you choose from Auto not always available On or Off to adjust for daylight saving time Current Time and Current Date shows the current time and date These fields are blank if the Fishfinder is not receiving a time from an attached GPS You cannot edit these fields 34 Using the Adjustment Menu The Adjustment Menu gives you direct access to the most commonly used settings and features The Adjustment Menu also provides a quick review of how the sonar is configured This menu varies depending on your transducer type your current page and your current settings You can make all adjustments by using the ROCKER and the ENTER key Fishfinder 340C Owner s Manual USING THE FISHFINDER 340C gt USING THE ADJUSTMENT MENU To change an Adjustment Menu setting 1 Press ADJ MENU A list of all options and their current settings appears The Adjustment Menu automatically disappears when idle for 20 seconds or you can press ADJ MENU to exit Press the ROCKER to select the option that you want to change and then press ENTER
33. e top uncalibrated water speed is used instead If the new speed is correct highlight OK and press ENTER If you want to manually enter a calibration press ENTER on the speed field enter a new speed and press ENTER Fishtinder 340C Owner s Manual 29 USING THE FISHFINDER 340C gt Usinc THE Main MENU Temp Temperature Tab Use the Temp tab to control the temperature log if your boat 1s equipped with a temperature transducer sensor The graph reads from right to left so that the most recent temperature measured appears on the far right side of the log The dotted lines within the graph indicate intervals in the temperature scale and the duration of time The following settings are available Log and Graph Scale sets the temperature range in degrees for viewing on the log and on the Sonar Pages Select Auto to have the Fishfinder automatically determine the best range or select a Span of 2 4 6 8 or 10 degrees 30 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 1 Minute to 2 5 Hours 10 Minutes is the default Temperature Log trecords the water temperature as you move through the water so that you can look for temperature changes over a period of time Alarms Tab The Alarms tab contains settings for the Fishfinder s alarms For a list of alarms and unit messages see page 43 The Alarm
34. er objects NOTE When adjusting the depth of the transducer make the Because water 1s 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 or distance reading when out of the water As the Fishfinder turns on it should immediately start showing the bottom Verify that the Fishfinder is not in Simulator mode If the Fishfinder is in Simulator mode make sure that the transducer 1s connected properly to the Fishfinder When you place your boat in the water CHECK FOR LEAKS around any screw holes that have been added below the water line DO NOT leave your boat in the water for an extended period of time without checking for leaks To test the transom mount installation 1 Begin testing the installation at a slow speed If the sonar appears to be working properly gradually increase the boat s speed 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 2 Return the boat to the speed at which the signal was lost Make moderate turns in both directions and see if the signal improves 3 Ifthe signal strength improves while turning adjust the transducer so that it extends another 1 8 below the transom of the boat It might take several adjustments to eliminate the degradation 4 Ifthe signal does not improve it might be necessary to move the transducer to a
35. esent GPRMB GPRMC GPXTE only used if RMB is not present Output SDDBT SDDPT SDMTW SDVHW SDWPL only if a waypoint is marked in Pointer mode Garmin GPS units accept an SDWPL WPL NMEA sentence and create a waypoint saved location at that position page 40 For compatibility with other brands of GPS or NMEA capable navigation devices check with those manufacturers to see if their units accept and store NMEA 0183 SDWPL sentences and waypoints The Fishfinder 340C does not store the actual waypoint Only the receiving device if capable stores the waypoint You can purchase complete information about National Marine Electronics Association NMEA format and sentences from NMEA at NMEA Seven Riggs Avenue Severna Park MD 21146 USA www nmea org Fishtinder 340C Owner s Manual INSTALLING THE FISHFINDER 340C gt INSTALLING THE WIRING HARNESS To Transducer Pin 6 Orange Accessory On Pin 14 Green CANet L RED VDC Pin 11 Yellow Alarm Pin 13 White CANet H Pin 15 Red DC Positive Pin 16 Brown RX NMEA BLACK Ground cL Pin 18 Black Ground Pin 17 Blue TX NMEA Fishfinder 340C Pin Assignment DC Power ORANGE Accessory On Source BLUE NMEA BLUE oe RXD iit BROWN NMEA In NMEA Device GREEN CANet L WHITE CANet H Alarm Relay 100ma max coil current YELLOW Alarm Low Fishfinder 340C Wiring Harness Fishtinder 34
36. essing and holding the DATA CNFG key see page 37 Fishfinder 340C Owner s Manual USING THE FISHFINDER 340C gt UNDERSTANDING THE MAIN PAGES Using the Sonar Pages The Sonar Page that you see and the options that appear in its Adjustment Menu depend on the transducer and settings that you are using If you are using a dual beam transducer you can access the basic Sonar Page and its related Adjustment Menu Current adjustment option Depth scale Water depth at the Suspended transducer targets Bottom M ode Narrow 23 USING THE FISHFINDER 340C gt UNDERSTANDING THE MAIN PAGES If you are using a dual frequency transducer and you set the Frequency to Dual you can access the Split Sonar Page the Sonar 220kHz Page the Sonar S0kHz Page and its related Adjustment Menu Frequency amp cal 100 bua 100 Split Sonar Page with Adjustment Menu For all Sonar Pages the currently selected adjustment option see page 35 appears in the upper left corner of the screen Directly below the adjustment option the screen shows numeric data such as Depth Water Temperature or Water Speed depending on your settings see page 37 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 24 Along the right side of the s
37. f equipped with a capable transducer the Fishfinder 340C can send depth temperature and speed information It can also mark a location that can be viewed and possibly saved on another device see page 41 The Fishfinder 340C can also accept GPS navigational data such as position time course or distance Refer to the wiring diagrams for interfacing the Fishfinder 340C with other devices see pages 17 and 19 To install the wiring harness to a GPS or other NMEA device 1 Follow the voltage source installation steps See page 15 For Garmin units the ground Black 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 340C NMEA Input Output to On page 32 For Garmin GPS units set the communications interface to NMEA NMEA NMEA In NMEA Out or NMEA 16 Interfacing with NMEA The Fishfinder 340C allows for NMEA 0183 Version 3 01 input output with a compatible GPS or navigation device You must set NMEA Input Output to On to send or receive data page 32 The following sentences are for NMEA 0183 Version 3 01 Input GPBOD GPBWC only used if RMB 1s not present GPGGA GPGLL only used if GGA not pr
38. ftware language on the screen 1 Press and hold ADJ MENU The Main Menu appears 2 Use the ROCKER to select the System tab Then use the ROCKER again to select the Language field Press ENTER 3 Press up or down on the ROCKER to select a language Press ENTER All text on the Fishfinder appears in the chosen language To change the backlight setting 1 Press and release Power Backlight to show the backlight Slider The backlight slider disappears when idle for 20 seconds 2 Press up or down on the ROCKER to change the user set backlight setting Press and release Power Backlight to toggle the backlight setting between maximum user set and minimum brightness levels 3 Press ENTER to return to the previous page 21 USING THE FISHFINDER 340C gt USING THE FISHFINDER 340C KEYPAD Using the Fishfinder 340C Keypad Power Backlight Key RANGE Keys e Press and hold to turn the unit on or off Press to view the Range Menu and select a Press and release to cycle through the setting maximum user set and minimum backlight ROCKER Key brightness levels e Press to move through menus highlight PAGE Key fields enter data or move the pointer e Press to cycle through the main pages in Press to change the current adjustment sequence GAIN Key ue e Press to view the Gain Menu and then use e Press to cancel data entry or exit a menu the ROCKER to select a setting ENTER Key JA PAUSE Key e e Press to pause a So
39. gles Some transducers are specifically designed to be mounted inside a fiberglass hull The standard plastic transom mount transducer can also be mounted using this method If using a temperature sensing transducer the temperature shown reflects the hull temperature Selecting a Location for a Shoot Thru Hull Installation When installing a transducer the installation location must be the following Solid fiberglass without any air bubbles laminates fillers or dead air space In an area of clean non turbulent water at all speeds The location must not be over any strakes or behind any obstruction on the hull that would create turbulence at speed Fishfinder 340C Owner s Manual NOTE Many modern hulls have a dedicated 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 in the following illustration 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 water pointed directly at the bottom and weight it down Set the unit for optimum performance If the sonar performance is significantly degraded another location must be tested Weight the transducer to PVC pipe hold it in place ora can Fill a pipe or can with water
40. information about the settings and how to change them WTR TEMP The most intense constant signal on the Flasher Page is the actual depth and bottom A soft bottom such as silt or mud creates a signal that is narrow and more faint A hard bottom such as sand or rock creates a signal that is wider The colors indicate the different strengths of the signals 25 USING THE FISHFINDER 340C gt Using THE Main MENU Using the Numbers Page Using the Main Menu When you use the Numbers Page you can view three data fields of The Main Menu contains the Fishfinder settings that should not your choice See Configuring Advanced Data Fields on page 37 require frequent change The Main Menu is divided into the for more information about the data fields following tabs Graph Sonar Temp Alarms System Units and Time Each tab is described in more detail in this section To view or change a setting in the Main Menu 1 Press and hold ADJ MENU The Main Menu appears To change the data fields on the Numbers Page 1 From the Numbers Page press and hold DATA CNFG The Data Configuration Menu appears 2 Use the ROCKER to select the field that you want to Highlight the tab for the option you want to view or change change and press ENTER A menu of your option 3 Highlight the setting you want to change and press ENTER categories appears The available settings appear 3 Use the ROCKER to select the c
41. ions A dual beam transducer can transmit a narrow or a wide beam The water area covered by the transmitted sound waves is determined by the beam width of the transducer and the water depth The narrow beam provides crisp detail of what is under your boat and is very helpful if you are fishing in deeper water where the beam covers more area for example at a depth of 30 feet the narrow beam covers the area of about a 7 foot circle Narrow Beam Fishtinder 340C Owner s Manual GETTING STARTED gt UNDERSTANDING THE FISHFINDER AND SONAR The wide beam is more helpful in shallow water because it gives you a much wider view of objects in the water including areas beyond the sides of your boat At a depth of 30 feet the wide beam covers the area of approximately a 20 foot circle Understanding the Fishfinder Screen Experimentation and experience are the keys to successfully interpreting your Fishfinder screen We recommend that you take your Fishfinder out on familiar water and spend time learning to interpret what you see on the Fishfinder 340C screen Think of the Fishfinder screen as if you took a picture from the side of an aquarium in your home You can see how deep a fish is in the water how close it 1s to the top or bottom but you cannot tell where the fish is located horizontally in the water whether it is near the front or the back of the aquarium Remember this when you are trying to locate exactly where something
42. is 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 garmin com prop65 LAMP S INSIDE THIS PRODUCT MAY CONTAIN MERCURY AND MUST BE RECYCLED OR DISPOSED OF ACCORDING TO LOCAL STATE OR FEDERAL LAWS The California Electronic Waste Recycling Act of 2003 requires the recycling of certain electronics For more information on the applicability to this product see www erecycle org iV Fishtinder 340C Owner s Manual GETTING STARTED Before installing and using your Fishfinder 340C check to see that your package includes the following items The package number is on the outside of the box If any parts are missing contact your Garmin dealer immediately Packing List planed Package 010 00505 00 Fishfinder 340C unit e Tilt swivel mount e 6 foot data power cable e Owner s manual e Quick reference guide Flush mount template e Protective cover Flush mount hardware kit Optional Package 010 00505 071 e Standard package Dual beam 14 45 plastic trolling motor transom mount transducer with depth and temperature and an attached 30 foot cable Fishtinder 340C Owner s Manual GETTING STARTED gt PACKING LIST AND OPTIONAL ACCESSORIES puona Package 010 00505 02 Standard package Dual frequency 200 50kHz plastic transom mount transducer with depth and temperature and an attache
43. is in the water GETTING STARTED gt UNDERSTANDING THE FISHFINDER AND SONAR targets The strongest sonar returns appear on your screen as the most intense solid color depending on your selected color scheme red is the default The weakest returns appear as the less intense less solid colors blue is the default The bottom of the water is always going to be the strongest signal and therefore the most intense color The bottom is the continuous intensely colored line running across the bottom of the screen The Fishfinder 340C includes the latest technology in interpreting bottom signals it can see through fish structures and thermoclines shown in the weakest colors Large schools of fish or dense structures close to the bottom can affect water depth return readings NOTE If the Fishfinder is unable to track the bottom for any reason the digits which indicate depth flash on and off to alert you that the Fishfinder is not tracking the bottom Along the top of the screen you might see a grouping of intense colors This area is surface clutter which can be caused by waves or any other sonar interference at the surface of the water Too much surface clutter can obscure your view of fish You can turn down the Gain setting to reduce this surface clutter Between the bottom and the surface clutter you see suspended targets in the previous illustration Here the targets appear as arches Actual suspended target
44. it dry Avoid chemical cleaners and solvents that can damage plastic components Cleaning the Screen Apply eyeglass lens cleaner to a clean lint free cloth and then gently wipe the screen with the moistened cloth CAUTION The Fishfinder 340C lens is coated with a special anti reflective coating which is very sensitive to skin oils waxes and abrasive cleaners CLEANERS CONTAINING AMMONIA HARM THE ANTI REFLECTIVE COATING Storage Do not store the Fishfinder where prolonged exposure to temperature extremes might occur such as in the trunk of a car because permanent damage can result Water Immersion The Fishfinder is waterproof to IEC Standard 60529 IPX7 It can withstand immersion in meter of water for 30 minutes Prolonged submersion can cause damage to the Fishfinder After submersion wipe and air dry the Fishfinder before reusing iii INTRODUCTION gt WARNING Failure to avoid the following potentially hazardous situations could result in an accident or collision resulting in death or serious injury When navigating carefully compare information displayed on the Fishfinder 340C to all available navigation sources including information from visual sightings and maps For safety always resolve any discrepancies or questions before continuing navigation WARNING This product its packaging and its components contain chemicals known to the State of California to cause cancer birth defects or reproductive harm Th
45. iwanclavatarsiandatiaviinwncnd sesscnialn 46 Installing the Wiring Harness ccsssssessesseseeseensens 15 Testing the Installation ccscssessesseeseeeseesseeseeseeeseeees 20 li Fishfinder 340C Owner s Manual INTRODUCTION gt PRopucT REGISTRATION CONTACT GARMIN AND CARING FOR THE FISHFINDER Product Registration Help us better support you by completing our online registration today Have the serial number of your Fishfinder handy and connect to our Web site http www garmin com Look for the Product Registration link on our Home page Use this area to record the serial number 8 digit number located on the back of the box Be sure to keep your original sales receipt in a safe place or attach a photocopy inside the manual Serial Number Contact Garmin If you encounter any difficulty while using your Fishfinder or if you have any questions in the U S A contact Garmin Product Support by phone 913 397 8200 or 800 800 1020 Monday Friday 8 AM 5 PM Central Time or go to www garmin com support and click on Product Support In Europe contact Garmin Europe Ltd at 44 0870 8501241 Caring for the Fishfinder The Fishfinder case is constructed of high quality materials and does not require user maintenance except cleaning Fishfinder 340C Owner s Manual Cleaning the Case Clean the Fishfinder s outer casing except for the screen using a cloth dampened with a mild detergent solution Wipe
46. lator mode turn off the Fishfinder Optional Accessories Purchase the following optional accessories on the Garmin Web site Quick release flush mount kit mounts your Fishfinder flush on the bulkhead or cabin wall Press the side clips to release the Fishfinder so you can take it with you CANet connection kit allows you to connect your Fishfinder 340C to CANet capable Garmin chartplotters so you can read sonar displays on chartplotters located elsewhere in the boat Go to www garmin com for the following information e The most recent list of available accessories e Documentation updates Fishtinder 340C Owner s Manual Messages and Alarms The Fishfinder 340C uses an on screen pop up message system to alert you to unit operating characteristics When a message appears press ENTER to acknowledge the message and return to the page you were viewing Anchor Drag Alarm you have drifted out of the specified distance range Battery Alarm battery voltage has fallen below the value entered in the Battery Alarm setup Battery Voltage Is Too High too much input voltage the unit shuts off in 10 seconds Decrease the input voltage to 33 volts or less 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 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
47. ll the four mounting holes Using a 3 8 6 mm 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 Be very careful when cutting this hole there is only a small amount of clearance between the Fishfinder and the mounting holes You can 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 Fishfinder by screwing the shorter section into the back of the Fishfinder Use a 1 16 2 mm Allen wrench to tighten the mounting Studs until the stop contacts the case Be careful not to overtighten because this can damage the mounting stud The studs have a reusable thread locking patch pre applied from the factory Place the Fishfinder into the cut out in the mounting surface Place washers over the mounting studs and then thread on one hex nut per mounting stud Tighten all four until the Fishfinder is snug against the mounting surface Install and tighten the second hex nut on all four mounting studs to lock the first one into place Studs ao al T Washer Hex nut aaga i Mounting Surface Back View Fishfinder 340C Owner s Manual INSTALLING THE FISHFINDER 340C gt MOUNTING THE TRANSDUCER Assembling the Transducer To assemble the transducer Mounting
48. nar or Flasher Page Press and hold to enter Pointer mode e Press to enter highlighted items and confirm on screen messages e Press to mark a waypoint at the pointer position when in Pointer mode when connected to a compatible NMEA GPS device DATA CNFG Key e Press to toggle the data fields in the upper ADJIMENU Key left corner of the page between the basic and pag e Press to open the Adjustment Menu advanced configurations e Press and hold to open the Main Menu e Press and hold to enter advanced data setup 22 Fishfinder 340C Owner s Manual Understanding the Main Pages The Fishfinder 340C typically offers several main pages for you to use including the Sonar Page Flasher Page and Numbers Page If you are using a dual frequency transducer and you have the Frequency set to Dual the following pages are available instead Split Sonar 200 kHz and 50 kHz Sonar 200 kHz Sonar 50 kHz and Numbers To change the page 1 Press PAGE The Pages Menu appears 2 Press PAGE or the ROCKER to select the page to which you want to go The Pages Menu disappears after a few seconds Depending on the current page you can access page specific information including one or more of the following e Access the Main Menu by pressing and holding the ADJ MENU key see page 26 e Access the Adjustment Menu by pressing and releasing the ADJ MENU key see page 35 e Access the advanced data configuration options by pr
49. ng to an NMEA device 16 wiring to a GPS 16 wtr temp water temperature 39 X xte crosstrack error 39 Z zoom 36 zoom split 24 Fishfinder 340C Owner s Manual Visit the Garmin Web site at www garmin com 2005 2006 Garmin Ltd or its subsidiaries Garmin International Inc 1200 East 151 Street Olathe Kansas 66062 USA Garmin Europe Ltd Unit 5 The Quadrangle Abbey Park Industrial Estate Romsey SO51 9DL UK Garmin Corporation No 68 Jangshu 2 Road Shijr Taipei County Taiwan Part Number 190 00658 00 Rev C
50. ot Working the 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 values 43 APPENDIX gt LIMITED WARRANTY 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
51. part Turn counter clockwise to widen the bracket arms and clockwise to tighten 2 Adjust the Fishfinder angle and tighten the long mounting knob until snug N 3 Rotate the swivel mount bracket by twisting it left or right The bracket clicks as you turn it Select a good viewing angle and then tighten all knobs 4 Connect the power data and transducer cables to the back of the Fishfinder making sure the locking rings are fully tightened on both connectors Fishfinder 340C Owner s Manual INSTALLING THE FISHFINDER 340C gt MOUNTING THE FISHFINDER Flush Mounting the Fishfinder You can flush mount the Fishfinder 340C into a flat panel e Select an appropriately sized location for the unit e Use the Flush Mount Template provided in the box to determine a location e Check that all cables reach the unit mounting location e Always wear safety goggles and a dust mask when drilling cutting or sanding Included mounting hardware 4 3 mm studs 4 flat washers and 8 3 mm hex nuts Tools not included center punch drill 1 8 3 mm drill bit 3 8 6 mm drill bit jig saw 1 16 2 mm Allen wrench and 9 32 7 mm wrench INSTALLING THE FISHFINDER 340C gt MOUNTING THE FISHFINDER To flush mount the Fishfinder 340C 1 Trim the Flush Mount Template and tape it to the chosen location Using a center punch indent the center of each mounting hole location Using an 1 8 3 mm drill bit dri
52. pth and makes it easier to spot subtle changes in bottom conditions or fish sizes DynaColor default represents the latest in sonar data presentation and is recommended for all applications The presentation is based on bottom strength It makes the bottom and the fish easier to see and requires fewer adjustments Keel Offset allows you to offset the surface reading for the depth of a keel This makes it possible to measure depth from the bottom of your keel instead of from a transducer s location near the water line Enter a positive number to offset for a keel You can also enter a negative number to compensate for a large vessel that may draw several feet of water requiring the transducer to be submerged if you want to measure from the water line The Keel Offset is reflected in the depth reading Automatic Scroll Speed Limit automatically adjusts the scroll rate see page 36 with the speed of your vessel when the Scroll option is set to Auto if equipped with a speed sensor or receiving GPS NMEA input Entering your maximum cruising speed produces a 100 scroll rate when you reach that speed One half of that speed produces a 50 scroll rate and so on The default is 30 0 kt Transducer Type allows you to specify what type of transducer you are using Fishfinder 340C Owner s Manual USING THE FISHFINDER 340C gt Usine THE Main MENU e Calibrate Water Speed this appears only if you are using A NOTE If the bo
53. r 340C Owner s Manual language changing the 21 language selection 32 LCD screen 5 location for shoot thru hull installa tion 13 location for the fishfinder 5 log temperature 30 log and graph scale 30 main menu 26 marking a waypoint 40 menu main 26 menu key 22 messages 43 mounting bracket 7 mounting the bracket assembly 6 mounting the fishfinder 6 mounting the transducer 9 mounting the transducer on a transom 12 mounting the transducer on a trolling motor 10 N narrow beam 3 35 narrow data fields 37 NMEA 16 29 32 33 41 NMEA address 16 Fishtinder 340C Owner s Manual NMEA data 38 NMEA device 16 NMEA input output 16 40 NMEA setup 32 numbers page 26 O optional accessories 42 p packing list 1 pages understanding the 23 page key 22 pause key 22 pausing a sonar or flasher page 39 pointer 16 38 pointer mode 40 pop up message 43 position format 33 power backlight key 20 21 22 power data and transducer cables 5 7 power up 20 21 Q quit key 22 R range 35 range keys 22 reset odometer 32 ROCKER key 22 scale 27 scale log and graph 30 screen cleaning the 111 scroll 36 scroll speed 28 selecting a location 5 selecting a location for shoot thru hull installation 13 selecting a transom mount location 11 setting an alarm 31 shallow water alarm 31 shoot thru hull installation 13 simulator mode 42 software language 21 software version 32 soft
54. rature and speed depending on the Graph tab settings Flasher Page The horizontal width of the A scope signal and the type of transducer or sensors attached The Advanced indicates the strength of the signal configuration shows a larger configurable data field with a white Color Bar shows a gradient scale of the current Color background The Advanced Data Setup Menu allows you to specify Gain setting see page 35 the type of data shown and either a Narrow small or Wide Temp Graph appears only if you have a temperature larger size format for each data field capable transducer This setting toggles the temperature graph along the bottom of a Sonar Page on or off When on the temperature graph matches the scrolling data WTR TEMP woo 61 7 00 Split When Zoomed splits the screen when you use the Zoom option If you turn on Zoom then this setting splits the screen If Zoom is Off and you turn on Split When Zoomed the last used zoom level is used on the screen e Swap Split available on the Split Sonar Page when Frequency is set to Dual This switches on which side the frequencies appear Fishfinder 340C Owner s Manual 37 USING THE FISHFINDER 340C gt CoNFIGURING ADVANCED Darta FIELDS The following selections require the proper NMEA data to view information in a data field Bearing Compass Course Distance to Next Off Course Pointer Position Speed Time Of Day Track Turn and VMG You must
55. rovements 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 CANet DynaColor and Ultrascroll are trademarks or registered trademarks of Garmin Ltd or its subsidiaries and may not be used without the express permission of Garmin October 2006 Part Number 190 00658 00 Rev C Printed in Taiwan INTRODUCTION gt ABouT THIS MANUAL About This Manual To get the most out of your Fishfinder 340C read this manual and INTRODUCTION Thank you for choosing the Garmin Fishfinder 340C The Fishfinder 340C is a full featured color sonar that offers a choice of display styles a dual beam or dual frequency option and many more features including the following Ultrascroll which gives you a much faster update rate on your Sonar Pages Auto Gain which allows you to see more fish and structures CANet capability which allows you to connect your unit to CANet capable Garmin chartplotters so you can read the Sonar Pages on chartplotters located elsewhere in the boat Round flasher which gives you an option for how to view the sonar Whiteline which helps you to interpret bottom hardness 2x and 4x automatic and manual zoom Adjustable keel offset Alarms for fish size shallow water deep water and low battery NMEA sonar data output and navigation data input Fishfinder 340C Owner s Manual
56. rrent location to the next waypoint DPT depth the depth of the water NOTE If the Fishfinder is unable to track the bottom for any reason the digits which indicate depth flash on and off to alert you that the Fishfinder is not tracking the bottom POINTER an arrow that points toward a destination waypoint from your current position BRG This field requires NMEA input SOG speed over ground the actual speed that the GPS unit is moving over the ground This field requires NMEA input STW speed through water the speed as calculated by an optional speed sensor on the transducer Fishfinder 340C Owner s Manual TIME the time of day shown using your selected time format TIMER an alarm that counts down or up in the increments that you set in the Alarms System sub tab TURN the degrees that you must turn left or right to make your direction of travel match your bearing Steer left L or right R until this reads 0 to go directly to your destination VMG velocity made good the rate of closure to a destination based on your current speed and course VOLT the current battery voltage input WTR TEMP water temperature the water temperature at the transducer XTE crosstrack error how far off the chosen course you are measured by your selected distance units This indicates if you are to the left or right of the course Fishtinder 340C Owner s Manual USING THE FISHFINDER 340C gt PAUSING A
57. sducer reports a temperature either above below inside or outside the specified values Fishfinder 340C Owner s Manual 31 USING THE FISHFINDER 340C gt Usinc THE Main MENU System Tab The System tab enables you to control various system and interface settings The following settings are available 32 e Beeper controls all sounds Select from Off Alarms Only sounds for alarms messages or Key and Alarm sounds for key presses and alarms messages Language select from various languages for the Fishfinder s on screen display System Mode lets you simulate Fishfinder operation If the Fishfinder does not detect a transducer it automatically enters Simulator mode NMEA Input Output controls the input and output of NMEA 0183 version 3 01 data to and from the Fishfinder This setting must be On to receive GPS navigational data and send Sonar NMEA data See page 16 for details on available NMEA sentences Factory Settings testores all settings to the original factory default values The Fishfinder 340C turns off and back on again when you select Yes Software Version shows the Fishfinder s software version copyright date and unit ID Reset Odometer this option appears only if you are using a speed capable transducer sensor This resets the odometer field to zero Fishfinder 340C Owner s Manual USING THE FISHFINDER 340C gt Usine THE Main MENU Units Tab hddd mm mmm7 The following
58. shfinder to be shown on the screen for you to view and interpret The transducer sends sound waves down into the water in a cone shape similar to a flashlight beam covering a smaller circular area at the top and angling out to a larger circular area at the bottom These sound waves reflect off of any object that they hit and then the waves travel back up to the transducer These objects could be fish branches the bottom or any other object that has density that is different from the water The transducer receives the sound wave information and then sends the information to the Fishfinder The Fishfinder shows the information on the screen for you to see and interpret The type of transducer and settings that you choose determine how the information appears on the screen Using Dual Frequency Dual frequency works best for deep water for example off shore applications The 200 kHz frequency allows you access to great detail about what is underneath your boat The 50 kHz frequency provides less detailed information but penetrates to greater depths with the same power You can choose either or both frequencies to get the information that you want If you choose dual frequency the transducer alternates between the 50 kHz and 200 kHz signals This capability allows you to see the best picture available at any depth Fishtinder 340C Owner s Manual Using Dual Beam Dual beam works best for shallow water for example inland applicat
59. structure easier aye Suspended targets appear as symbols with background information shown The target depth is indicated Scale controls the depth scale shown vertically along the right side of the graph The settings are Overlay default in the Corners Basic scale or No Scale Custom Range allows you to specify a custom viewing range or scale When On this range appears as Custom in the Range setting The left value is the top of the scale and the right value is the bottom of the scale Color Scheme sets the colors for the Sonar and Flasher Pages The default setting 1s Classic White Temperature and Water Speed hides or shows temperature and water speed on the Sonar Page When set to Auto the Fishfinder automatically shows this information if it is received from a capable transducer 27 USING THE FISHFINDER 340C gt Using THE Main MENU Sonar Tab Use the Sonar tab to set up initial settings and calibrations The following settings are available 28 e Auto Gain controls the aggressiveness of the Auto Gain when the Gain option is set to Auto see page 35 The higher the setting the greater the number of targets appear on the screen The lower the setting the less clutter on the screen The settings are Low Medium default and High e Auto Color Gain controls what colors are applied to the objects on the screen when the Color Gain option is set to Auto see page 35 Color DCG is based on de
60. tab 1s divided into two sub tabs Sonar alarms and System alarms Fishfinder 340C Owner s Manual USING THE FISHFINDER 340C gt Usine THE Main MENU To set an alarm 1 Use the ROCKER to highlight a sub tab of the Alarms tab 2 Highlight the field below the alarm name that you want to set and press ENTER Highlight a new setting and press ENTER Highlight the next field to the right if applicable and press ENTER Then enter a setting and press ENTER to finish Sonar Sub Tab Fish sets an alarm to sound and an icon to appear when the Fishfinder detects a fish of the specified size Shallow Water and Deep Water set alarms to sound when you enter an area of specified depth that is too shallow or too deep The settings are Off default and a user defined number e Battery sets an alarm to sound when the battery is reaching a critical state of discharge The settings are Off default and a user defined number of volts remaining e Timer allows you to control a timer This can be useful E an alarm to sound when you exceed a specified for tournament fishing The settings are Count Dn Down drift depth range For example if the value is set to 5 feet Count Up Up Stop or Reset the timer and the current depth is 20 feet when the alarm is enabled the alarm sounds 1f the Fishfinder detects a depth greater than 25 feet or shallower than 15 feet Water Temp sets an alarm to sound when the tran
61. the Transducer Proper transducer installation is key to getting the best performance from your new Fishfinder If the transducer lead is too short extension cables are available from your Garmin dealer Coil and secure any excess cable of the transducer cable because cutting the transducer cable voids your warranty The cable cannot be spliced and connected to any existing Garmin or non Garmin transducer cables The following pages contain tips and basic installation instructions for some popular transducers Detailed installation instructions are provided in the transducer kits Some transducers might have to be installed by a professional marine installer Fishtinder 340C Owner s Manual CAUTION DO NOT cut the transducer lead or any part 1 Insert the rubber washer and plastic spacer into the transducer at the same time DO NOT lubricate the rubber washer Route the cable toward the back of the transducer Slide the transducer into the transducer mount Place a 5 mm flat washer on the 10 32 x 1 75 screw and insert the screw through the transducer mount spacer and rubber washer Place the remaining 5 mm flat washer on the exposed end Install the 10 32 lock nut finger tight You can tighten the transducer further after installation on the boat Cable tie slot Back of the transducer INSTALLING THE FISHFINDER 340C gt MOUNTING THE TRANSDUCER Mounting the Transducer on a Trolling Motor Dual Beam Only
62. 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 service contact your local Garmin authorized dealer or call Garmin Product Support for shipping instructions and an RMA tracking 4d 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 USA Tel 913 397 8200 Fax 913 397 8282 Garmin Europe Ltd Unit 5 The Quadrangle Abbey Park Industrial Estate Romsey SO51 9DL UK Tel 44 0 870 8501241 outside the UK or 0808 2380000 UK only Fax 44 0 870 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 distribu
63. to show the settings The current setting is highlighted in yellow Press the ROCKER to select a new setting Press ENTER to accept the new setting and return to the Sonar Page The current adjustment option appears in the upper left corner of the screen For fast adjustment from a Sonar Page press left or right on the ROCKER to scroll through the options Press up or down on the ROCKER to change the current setting or press ENTER to review the setting before you make changes Available adjustments are Range sets the screen depth range used for viewing Auto recommended automatically tracks the bottom or you can set a specific depth range making sure the range includes the bottom of the water Fishfinder 340C Owner s Manual Gain controls the sensitivity of the Fishfinder s sonar receiver Auto default is the recommended setting It automatically sets the sonar sensitivity You can also set the gain manually To see more detail on the screen increase the receiver sensitivity by selecting a higher gain If there 1s too much detail or if the screen is cluttered lower the sensitivity lower the gain to increase the clarity of the screen If Frequency 1s set to Dual you can set the Gain separately for each frequency 50 kHz and 200 kHz Color Gain controls what colors are applied to the objects on the screen Auto default is the recommended setting It automatically sets the colors based on your Auto Color Gain
64. tors 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 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 States Canada or Taiwan for service Fishtinder 340C Owner s Manual The Garmin Fishfinder 340c 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 Fishfinders are 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 Declaration of Conformity Hereby Garmin declares that this Fishfinder 340c product is in compliance with the essential requirements and other relevant provisions of Directive 1999 5 EC To view the full Declaration of Conformity see the Garmin Web site for your Garmin product http www garmin com products ff340c Click Manuals and then select the Declaration of Conformity Fishtinder 340C Owner s Manual APPENDIX gt SOFTWARE LICENSE AGREEMENT Software License Agreement BY USING THE FISHFINDER 340C YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS OF THE FOLLOWING SOFTWARE LICENSE AGREEMENT PLEASE READ THIS AGREEMENT CAREFULLY

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