Garmin Fishfinder 120 Installation Instructions Manual

Contents

Menu settings

Setup Menu — Alarms: BatterySounds an alarm when the battery is reaching a critical state of discharge.Setup Menu — Alarms: Shallow/Deep Water Alarm‘Shallow’ and ‘Deep’ can be set to sound a shallow/deep water warning at a depthdetermined by you. (If the either alarm is set and ‘Depth’ units are changed, both alarmsdefault to ‘Off’.) These alarms may be set to ‘Off’ (default) or from 1-600 ft.Setup Menu — Alarms: Fish AlarmSounds an alarm when the unit detects what it determines to be a fish. The alarmselections are: ‘Off’ (default) or ‘On’.Setup Menu — Graph: Fish IDDetermines how the graph displays underwater targets and background informa-tion. If ‘Fish ID’ is set to ‘Off’, the unit displays all of the available information aboutthe underwater environment. If a fish symbol is selected, the graph displays only theinformation related to that symbol (large, medium and small sizes).— All available information is displayed. (default)— Suspended targets displayed as symbols. No background information isdisplayed in this mode.— Same as above with target depth displayed.— Suspended targets display as symbols. In this mode backgroundinformation is still displayed making fish identification easier.— Same as above with target depth displayed.Limited WarrantyThis Garmin product is warranted to be free from defects in materials or workmanship for one year fromthe date of purchase. Within this period, Garmin will at its sole option, repair or replace any componentsthat fail in normal use. Such repairs or replacement will be made at no charge to the customer for parts orlabor, provided that the customer shall be responsible for any transportation cost. This warranty does notcover failures due to abuse, misuse, accident or unauthorized alteration or repairs.THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF ALLOTHER WARRANTIES EXPRESS OR IMPLIED OR STATUTORY, INCLUDING ANY LIABILITY ARISINGUNDER ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE,STATUTORY OR OTHERWISE. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, WHICHMAY VARY FROM STATE TO STATE.IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT OR CON-SEQUENTIAL DAMAGES, WHETHER RESULTING FROM THE USE, MISUSE, OR INABILITY TO USETHIS PRODUCT OR FROM DEFECTS IN THE PRODUCT. Some states do not allow the exclusion ofincidental 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 thepurchase price at its sole discretion. SUCH REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE REMEDYFOR ANY BREACH OF WARRANTY. Products sold through online auctions are not eligible for rebates orother 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.To obtain warranty service, contact your local Garmin authorized dealer. Or call Garmin CustomerService for shipping instructions and a RMA tracking number. The unit should be securely packed withthe tracking number clearly written on the outside of the package. The unit should then be sent, freightcharges prepaid, to any Garmin warranty service station. A copy of the original sales receipt is required asthe proof of purchase for warranty repairs.The Fishfinder 120 has no user-serviceable parts and is fastened shut with screws. Any attempt to openthe case to change or modify the unit in any way will void your warranty and may result in permanentdamage to the equipment.Software License AgreementBy using the Fishfinder 120, you agree to be bound by the terms and conditions of the following soft-ware license agreement. Please read this agreement carefully.Garmin grants you a limited license to use the software embedded in this device (the “Software”) inbinary executable form in the normal operation of the product. Title, ownership rights and intellectualproperty 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 ofAmerica 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 insource 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 partthereof or create any derivative works based on the Software. You agree not to export or re-export theSoftware to any country in violation of the export control laws of the United States of America.© Copyright 2003 Garmin LTD. or its subsidiariesGARMIN®, DCG® and See-Thru® are registered trademarks of Garmin Ltd. or its subsidiariesand may not be used without the express permission of GARMIN.Garmin International, Inc. 1200 East 151st Street, Olathe, Kansas 66062, U.S.A.Tel.913/397.8200 Fax. 913/397.8282Garmin (Europe) Ltd. Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO519DL, U.K. Tel. 44/1794.519944 Fax.44/1794.519222Garmin Corporation No. 68, Jangshu 2nd Road, Shijr, Taipei County, TaiwanTel. 886/2.2642.9199 Fax. 886/2.2642.9099www.garmin.com Part Number 190-00306-00 Rev. AOperational InstructionsThank you for choosing the Garmin Fishfinder 120. This product is designed foreasy operation and to provide years of reliable service. Please read through these instruc-tions to get the most out of your new unit. If you encounter a problem please contactour Product Support Department at 913-397-8200, Monday - Friday 8:00 a.m. to 5:00p.m. CST or on the internet at www.garmin.com/support.SpecificationsCase: Fully Gasketed, high-impact plastic alloyDisplay: 3.1”H x 3.2”W (7.9 x 8.1 cm), 240 x 128 pixelsSize: 6.1” W x 4.9” H x 2.6 D (15.5 x 12.5 x 6.6 cm); Weight: 18.7 oz.Temperature Range: +5° to 158°F (-15C to 70C)Waterproof: IEC 529, level IPX-7 (submerged to 1 meter for 30 minutes)Internal memory backup to retain user settingsInput: 10 to 18 Vdc w/ high voltage protectionUsage: 8 watts maximum, Nominal: 12 Vdc @ 0.5 ampsSonar Power Output: 100 watts (RMS), 800 watts (peak to peak)Frequency: 200kHzDepth: 600 foot max depth (Depth capacity is dependent on water salinity, bottom type and otherwater conditions.)Specifications subject to change without notice.Fishfinder 120 The Fishfinder 120 is able to display a variety of useful information about theunderwater environment. Below are a few things the unit helps you see.Water DepthThe unit displays water depth and can provide a warningwhen a specific depth is encountered. The DepthScale is displayed from top to bottom along theright side of the display. Messages and AlarmIcons are displayed along the bottom.Water TemperatureThe unit displays the water temperature at thetransducer.FishThe unit displays fish as arches or fish symbols in3 sizes and can alert you when a fish is detected.Thermocline and StructureGARMIN’s See-Thru® technology can displaymore than just the thermocline and structure, theunit displays fish in and below the thermocline,trees, brush, and deadfall.Bottom Shape and TypeGarmin’s unique DCG® (Depth Control Gain) system providesa clear graphic representation of the bottom type and its shape.ARROW KEYSThe UP and DOWN ARROW keys are used toselect items on the Adjustment Menu and Setupmenu. The LEFT and RIGHT ARROW keys areused to quickly cycle through Adjustment Menusettings.ENTER KeyThe ENTER key is used to activate/deactivatethe Adjustment Menu and Setup Menu datafields for review or changes.MENU KeyThe MENU key is used to activate/deactivateAdjustment and Setup Menus.POWER KeyThe POWER Key is used to turn the unit on/offand to activate the display backlight. Press andhold to turn the unit on/off. Press briefly andrelease to activate the backlight. To change thebacklight level, press the POWER key repeat-edly to cycle between Off, Low and High.Adjustment Menu — RangeSets the display depth range. The unit can be set to automatically track thebottom or set to a user-specified range. Available settings are: ‘Auto’ (default) and15-600 ft.Adjustment Menu — GainControls the sensitivity of the unit’s sonar receiver. This provides some flexibilityin what is seen on the display. To see more detail, increase the receiver sensitivity byselecting a higher gain (+). If there is too much detail or if the screen is cluttered,lowering the sensitivity (-) may increase the clarity of the display. Available settingsare: ‘Normal’ ( default) and +5 to -5.Adjustment Menu — ScrollAdjusts the rate that the graph scrolls from right to left. If you are sitting still or thegraph is moving too fast, slowing or pausing the graph can be beneficial.Adjustment Menu — ZoomSelects a display zoom scale. Available settings are: ‘OFF’ (default), ‘2X’ and ‘4X’zoom.Adjustment Menu — View‘View’ is available only when a Zoom scale other than ‘OFF’ is selected. This set-ting allows you to select a specific zoom area to view on the display or allow the unitto automatically select a zoomed viewing area based on the bottom. When adjustingthis setting, the top and bottom numbers reflect the zoomed view depth range.Using the Adjustment MenuThe Adjustment Menu allows direct access to thesettings most commonly changed while using the unit.These include the depth Range, Gain, Zoom, and theView settings. Current Adjustment Menu settings maybe viewed by pressing the MENU key. Press MENUagain to hide the window or to exit any window. Thecurrent adjustment option always displays in theupper left of the display. Press LEFT or RIGHT on theARROW keys to scroll through the available options.To immediately change the current adjustment option, press the UP or DOWNARROW key. If you wish to review the available settings before making a change,press the ENTER key to activate the adjustment window.To change a setting on the unit:1. Press MENU, then using the UP or DOWN ARROW key, move the selection arrowto the desired option and press ENTER. Choose ‘Setup’ for the main Setup Menu.2. Using the UP or DOWN ARROW key move the selection arrow to the desiredsetting and press ENTER. (The selection arrow wraps when you reach the end ofa menu and adjustment window. If holding the ARROW key down, release thenpress.) Holding down on an ARROW key rapidly advances the selection speed.3. To close a setting or menu window, press MENU.Setup Menu — Graph: WhitelineControls how the unit displays information about the bottom type (hard orsoft). With Whiteline ‘Off’, the bottom return displays as solid black and contains noinformation on bottom hardness. With Whiteline ‘On’, the bottom return becomesa grayscale pattern and can be used to determine bottom hardness. A hard bottomreturns a stronger signal and displays a thicker bottom layer. A weaker (soft) bottomreturn displays a thinner bottom layer. The selections are: ‘Off’ or ‘On’ (default).Setup Menu — Graph: Noise RejectFilters unwanted noise from the graph (especially when moving at faster speeds)and can be turned ‘Off’ or set to a fixed value from 1-100%. Remember when setting the‘Noise Reject’, the higher the noise rejection setting, the more likely the unit does notshow fi sh or structure. The selections are: 1-100% (default 50%) or ‘Off’.Setup Menu — Numbers: SizeDisplays either ‘Normal’ (default) or ‘Large’ depth, temp. and battery numbers.Setup Menu — Numbers: BatteryChoose to either ‘Hide’ (default) or ‘Show’ the current battery voltage.Setup Menu — Numbers: Water Temp.‘Water Temp’ automatically displays when set to ‘Auto’ (default) or you may chooseto ‘Hide’ the temperature numbers. Water temperature will only display if you have atemperature capable transducer.Setup Menu — Units: DepthChoose to display measurements in Feet (ft, default), Meters (m) or Fathoms (fa). (Ifthe ‘Depth Alarm’ is set when ‘Units’ are changed, the ‘Depth Alarm’ is defaulted to ‘Off’)Setup Menu — Units: TemperatureChoose to display the water temperature in Fahrenheit (°F, default) or Celsius (°C)Setup Menu — System: SimulatorThe Fishfinder 120 comes with a built-in simulator mode that allows you topractice and learn the operation of the unit at home rather than on the water. Theunit indicates that it is running the simulator mode by displaying a message in thelower left of the display. While in the simulator mode, the unit displays a randombottom scene and the Fishfinder 120 can be controlled (except Noise Reject andGain) just as if it were on the water. To exit the Simulator, turn the unit off. If nokeys are pressed for 2 minutes, the unit automatically resets to default unit settingswhile in simulator mode. If the unit does not detect a transducer attached, it auto-matically starts in Simulator mode.Setup Menu — System: ContrastAdjusts to compensate for different light levels or viewing angles.Setup Menu — System: DefaultsThis option allows you to restore the factory default settings for the unit.Understanding SonarTo understand what the unit is displaying, it is important to have a general knowl-edge of how the unit works and how it determines what to display. The unit operates bytransmitting sound waves toward the bottom of a lake, stream, or seabed in a cone shapedpattern. The area covered by the transmitted sound waves is determined by the coneangle of the transducer and the water depth. UsingGarmin’s standard 20° transducer, the coverage isapproximately 1/3rd of the water depth. The coveragearea at a 30-foot depth is approximately a 10-footdiameter circle.When a transmitted soundwave strikes anunderwater object, sound is reflected back to thetransducer. The transducer collects the reflected soundwaves and sends the data to the unit to be processedand displayed on the graph. The underwater data isdisplayed on the graph in the order that it is returned:first returned—first on the graph. Generally speaking,if the only thing between the transducer and thebottom is water, the first strong return comes fromthe bottom directly below the transducer. The firststrong return sets the bottom level. Weaker secondaryreturns provide the detailed data. A fish may be in thecoverage area of the transducer, but remember the firststrong return sets the bottom level. Any fish in a DeadZone is not detected by the sonar. Thefi sh is never detected since the bottomlevel is never set below the fish. Thefi sh on the right side of the display(shown in light grey) is detected anddisplayed when the transducer conepasses over the fish.It is important to understand thatthe unit does not display a 3-D repre-sentation of the underwater environ-ment. The unit can display multiplethings (such as a fish and a tree) atthe same time but can not determinewhere the return originated, only whenit was received. Remember that theFishfi nder displays a 2-D picture of theunderwater environment. A fish and anunderwater structure could be locatedanywhere in the coverage area at thatslice of time.1'10'9'8'7'6'5'4'3'2'3'6'9'12'15'18'21'24'27'30'(Simulated display)Warning: This product, its packaging, and its components contain chemicals known to the Stateof California to cause cancer, birth defects, or reproductive harm. This Notice is being providedin accordance with California’s Proposition 65. If you have any questions or would like additionalinformation, please refer to our web site at www.garmin.com/prop65.Dead Zone

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