I M J O R N P

Assembling the Transducer
1. Insert the Rubber Washer and Plastic Spacer in the transducer at the same time. DO NOT lubricate the Rubber Washer. 2. Route the cable towards the back and slide the transducer into the mounting bracket. 3. Place a 5 mm Flat Washer on the 10-32 x 1.75" screw and insert the screw through the Mounting Bracket, Spacer, and Rubber Washer. 4. Place the remaining 5 mm Flat Washer on the exposed end and install the 10-32 Lock Nut finger tight. The transducer is tightened further after installation on boat.
Mounting the Transducer On a Trolling Motor
1. Slide the large Cable Tie through slot on the Transducer Mount with the ridges of the band facing up until equal lengths extend on both sides of the mount. (For cold water or heavy timber/debris areas, a metal 4-5 worm gear clamp is recommended.) 2. Position the Mount Gasket on the curved top of the Mount. 3. 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. 4. Place the pointed end of Cable Tie through the fastener hole on the opposite end and pull through (you will hear clicks) until snug. 5. Position the transducer so that it is parallel with the bottom when in use. Make sure the Gasket is aligned properly. Pull the Cable Tie end until tight. Excess may be trimmed off if needed. Tighten the 10-32 locking nut until it touches the mounting bracket and then tighten 1/4 turn more (do not overtighten). 6. Route the 20 (6.1 m) transducer cable using the supplied cable ties to secure the cable to the motor shaft. If desired, the forwardfacing portion (except the Cable Tie pocket) of the Transducer Mount may be filled with sealant to avoid debris accumulation.

Fishnder 120

Installation Instructions
Please read through these instructions thoroughly before attempting installation. Make sure you completely understand these instructions before you begin. When in doubt, seek professional assistance. Be sure the wiring harness reaches the unit and transducer location before beginning installation. The Garmin Fishnder 120 hardware allows for installation on either the transom or trolling motor. Please check the packing list below. If you are missing any items, please contact your Garmin dealer. Packing List: J - 5 x 30 mm Screws (2)
A - Fishnder 120 Sonar Unit (1) B - Swivel Mount Bracket (1) C - Swivel Base (1) D - Mounting Knobs- Short (1), Long (1) E - Mounting Knob Spacer (1) F - Transducer With Power Cable (1) G - Transducer Mount (1) H - Trolling Motor Mount Gasket (1) I - 5 mm Flat Washers (2) K - 10-32 Lock Nut (1) L - 4 x 12 mm Screws (4) M - 10-32 x 1.75 Screw (1) N - 1/4 Cable Clamps (2) O - Plastic Spacer (1) P - 1/4 Rubber Washer (1) Q - Cable Tie, 5.6 (4) R - Cable Tie, 20 (1) S - Snap-Ring (1)

A E S G H B D F Q

(Cable not shown)
Selecting a Transom Mount Location For your sonar to operate properly, the transducer has to be located in clean (nonturbulent) water. The transducer should be mounted as near the center of the boat as possible. DO NOT cut the transducer lead, this will void your warranty and may cause the unit to not operate at optimal levels. DO NOT mount the transducer behind strakes, rivet lines, struts, ttings, water intake, discharge ports, eroding paint, or anything that creates air bubbles or causes the water to become turbulent. It is important that the transducer be as close to the center line as possible in calm, non-turbulent water for optimal performance. Avoid mounting the transducer in locations where the boat may be supported during launching, hauling, trailering, or storage. Mount the transducer away from the path of the prop on single drive boats. On twin drive boats, mount the transducer between the drives if possible. Do not mount the transducer directly in the path of the prop. The transducer can cause cavitation that may degrade the boats performance and damage the prop.

Do not mount the transducer behind strakes, rivet lines, struts, fittings, water intakes, or discharge ports.
Mounting the Transducer On a Transom
Tool List (not included) - Drill, 3/8" Wrench or Socket, 5/32" and 1/8" Drill Bits, Masking Tape, #2 Phillips Screw Driver, Marine Sealant 1. Position the transom mount at the selected location, making sure the transducer is parallel with the water line. Mark the center locations of each hole on the transom mount. (See figures to the right.) 2. Using the 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 1" from the point of the bit. 3. Apply Marine Sealant to the 5 x 30 mm screws. Attach the transducer to the transom using the 5 x 30 mm screws. Adjust the transducer 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 to be aligned parallel with the water. 5. Tighten the 10-32 locking nut until it touches the mounting bracket and then tighten 1/4 turn more (do not overtighten). 6. Place the first cable clamp on the transducer cable approximately one third of the distance between the transducer and the top of the transom. Mark the location. Using a 1/8" bit, drill a pilot hole approximately 3/8" (10 mm) deep. 7. Attach the cable clamp using a 4 x 12 mm screw. Coat the screw with marine sealant before installation. Repeat steps 6 and 7 using the other cable clamp. 8. Route the transducer cable as needed to the sonar unit. DO NOT CUT THE CABLE. Try to avoid routing the cable with electrical wires or other sources of electrical interference.

Drill Pilot Holes Here

Apply marine sealant to all screw threads to prevent water from seeping into the transom.
Align with transom bottom. Transducer should extend 1/8 below fiberglass hulls or 3/8 below aluminum hulls.

Bottom o

f Transom
Mount the transducer parallel with the water line. Make sure the transducer is below water level when the boat is on plane at high speed.
Keep Parallel With Water Line
Unit Installation Selecting a Proper Location Choose a location that provides optimal viewing while operating the vessel and allows easy access to the units keypad. Select a mounting surface strong enough to support the weight of the unit and protect it from excessive vibration or shock. DO NOT mount the bracket in a location where the unit is exposed to extreme temperature conditions. When installing the mounting bracket, be sure to allow room for the connection/routing of the power cable. Mounting the Bracket Assembly
Tool List (not included) - Drill, Screwdriver (Phillips or Standard), three #8 pan head machine bolts with matching nuts and washers and a 5/32 drill bit, OR three #8 pan head self-tapping screws and a 1/16 drill bit 1. Using the swivel base as a template, mark the location of the three holes which are used to secure the bracket to the mounting surface. 2. If securing the base with machine bolts, drill three 5/32 holes at the locations you marked. OR, If securing the base using self-tapping screws, drill 1/16 starter holes at the locations you marked. Starter holes should generally be no deeper than half the screw length. 3. Secure the swivel base with three bolts or screws. DO NOT OVERTIGHTEN. 4. Place the rest of the mount over the swivel base and secure with the short knob.

Installing the Unit On the Mounting Bracket
1. Align the slot on the back of the unit with the long mounting knob and slide in place. It may be necessary to adjust the long knob to spread the bracket arms apart. (Turn counter-clockwise to widen the bracket arms, clockwise to tighten.) 2. Adjust the unit angle and tighten the long mounting knob until snug. 3. Tilt the unit by loosening the long knob on the right side of the bracket assembly. 4. Rotate the entire bracket by twisting it left or right. (You will hear clicks as you turn the bracket.) 5. Tighten all knobs once the desired viewing angle is obtained.
Wiring Harness Installation The Fishfinder 120 comes with a wiring harness that connects the unit to power and the transducer with one easy-to-remove connection. If it is necessary to extend the power wires, use 22 AWG wire. DO NOT cut the transducer cable. This will void your warranty. If your boat has an electrical system, it may be possible to wire the unit directly to an unused holder on your current fuse block. If you are using the boats fuse block, remove the in-line fuse holder supplied with the unit. You may also wire the unit direct to the battery. CAUTION: The Fishfinder 120 input voltage is 10-18 volts DC. DO NOT exceed this voltage as this may damage the unit and void the warranty. Installing the Wiring Harness:
1. 2. 3. 4. 5. Determine the polarity of the power source using a Test Light or Volt Meter. Install the Red (+) wire on the Positive fuse holder or battery terminal. Install the Black (-) wire on the Negative fuse holder or battery terminal. Install a 2 amp fuse in the fuse holder (fuse block only). Align the notches on the cable plug and back of the unit. Insert the cable into the connector and turn the lock ring counter-clockwise unit it stops.
Testing the Transom Mount Installation This test is to be performed after the unit installation. See unit operating instructions for additional use information. Since water is necessary to carry the sonar signal, the Fishnder 120 does not function properly with the transducer out of the water. When you place your boat in the water CHECK FOR LEAKS around the screw holes that are below the water line. DO NOT leave your boat in the water for an extended period of time without checking for leaks.
1. Begin testing the installation at a slow speed. If the sonar appears to be working properly gradually increase the boats speed observing the sonars 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 the signal was lost. Make moderate turns in both directions and see if the signal improves. 3. If the signal strength improves while turning, adjust the transducer so that it extends another 1/8" below the transom of the boat. It may take several adjustments to eliminate the degradation. 4. If the signal does not improve it may be necessary to move the transducer to a different location.

Unit Care Cleaning - Clean the unit housing using a cloth lightly dampened with a mild detergent solution and then wipe dry. Avoid chemical cleaners and solvents that may damage plastic components. Do not apply cleaner to electrical contacts on the back of the unit. Storage - Do not store the unit where exposure to temperature extremes may occur, as permanent damage may result.

Vertical

Operational Instructions
Thank you for choosing the Garmin Fishnder 120. This product is designed for easy operation and to provide years of reliable service. Please read through these instructions to get the most out of your new unit. If you encounter a problem please contact our Product Support Department at 913-397-8200, Monday - Friday 8:00 a.m. to 5:00 p.m. CST or on the internet at www.garmin.com/support. Specications Case: Fully Gasketed, high-impact plastic alloy Display: 3.1H x 3.2W (7.9 x 8.1 cm), 240 x 128 pixels Size: 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 158F (-15C to 70C) Waterproof: IEC 529, level IPX-7 (submerged to 1 meter for 30 minutes) Internal memory backup to retain user settings Input: 10 to 18 Vdc w/ high voltage protection Usage: 8 watts maximum, Nominal: 12 Vdc @ 0.5 amps Sonar Power Output: 100 watts (RMS), 800 watts (peak to peak) Frequency: 200kHz Depth: 600 foot max depth (Depth capacity is dependent on water salinity, bottom type and other
water conditions.) Specications subject to change without notice.

ARROW KEYS

The UP and DOWN ARROW keys are used to select items on the Adjustment Menu and Setup menu. The LEFT and RIGHT ARROW keys are used to quickly cycle through Adjustment Menu settings.

ENTER Key

The ENTER key is used to activate/deactivate the Adjustment Menu and Setup Menu data fields for review or changes.

MENU Key

The MENU key is used to activate/deactivate Adjustment and Setup Menus.

POWER Key

The POWER Key is used to turn the unit on/off and to activate the display backlight. Press and hold to turn the unit on/off. Press briefly and release to activate the backlight. To change the backlight level, press the POWER key repeatedly to cycle between Off, Low and High.
The Fishfinder 120 is able to display a variety of useful information about the underwater environment. Below are a few things the unit helps you see. Water Depth The unit displays water depth and can provide a warning when a specific depth is encountered. The Depth Scale is displayed from top to bottom along the right side of the display. Messages and Alarm Icons are displayed along the bottom. Water Temperature The unit displays the water temperature at the transducer. Fish The unit displays fish as arches or fish symbols in 3 sizes and can alert you when a fish is detected. Thermocline and Structure GARMINs See-Thru technology can display more than just the thermocline and structure, the (Simulated display) unit displays fish in and below the thermocline, trees, brush, and deadfall. Bottom Shape and Type Garmins unique DCG (Depth Control Gain) system provides a clear graphic representation of the bottom type and its shape.

Using the Adjustment Menu The Adjustment Menu allows direct access to the settings most commonly changed while using the unit. These include the depth Range, Gain, Zoom, and the View settings. Current Adjustment Menu settings may be viewed by pressing the MENU key. Press MENU again to hide the window or to exit any window. The current adjustment option always displays in the upper left of the display. Press LEFT or RIGHT on the ARROW keys to scroll through the available options.
To immediately change the current adjustment option, press the UP or DOWN ARROW 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 arrow to 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 desired setting and press ENTER. (The selection arrow wraps when you reach the end of a menu and adjustment window. If holding the ARROW key down, release then press.) Holding down on an ARROW key rapidly advances the selection speed. 3. To close a setting or menu window, press MENU.

Adjustment Menu Range

Sets the display depth range. The unit can be set to automatically track the bottom or set to a user-specified range. Available settings are: Auto (default) and 15-600 ft. Adjustment Menu Gain Controls the sensitivity of the units sonar receiver. This provides some flexibility in what is seen on the display. To see more detail, increase the receiver sensitivity by selecting 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 settings are: Normal ( default) and +5 to -5. Adjustment Menu Scroll Adjusts the rate that the graph scrolls from right to left. If you are sitting still or the graph is moving too fast, slowing or pausing the graph can be benecial. Adjustment Menu Zoom Selects 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 setting allows you to select a specific zoom area to view on the display or allow the unit to automatically select a zoomed viewing area based on the bottom. When adjusting this setting, the top and bottom numbers reflect the zoomed view depth range.

Understanding Sonar To understand what the unit is displaying, it is important to have a general knowledge of how the unit works and how it determines what to display. The unit operates by transmitting sound waves toward the bottom of a lake, stream, or seabed in a cone shaped pattern. The area covered by the transmitted sound waves is determined by the cone angle of the transducer and the water depth. Using Garmins standard 20 transducer, the coverage is approximately 1/3rd of the water depth. The coverage area at a 30-foot depth is approximately a 10-foot diameter circle. 3' 1' When a transmitted soundwave strikes an 6' 2' underwater object, sound is reflected back to the 3' 9' transducer. The transducer collects the reflected sound waves and sends the data to the unit to be processed 4' 12' and displayed on the graph. The underwater data is 5' 15' displayed on the graph in the order that it is returned: 6' first returnedfirst on the graph. Generally speaking, 18' if the only thing between the transducer and the 7' 21' bottom is water, the first strong return comes from 8' 24' the bottom directly below the transducer. The first strong return sets the bottom level. Weaker secondary 9' 27' returns provide the detailed data. A sh may be in the 30' 10' coverage area of the transducer, but remember the rst strong return sets the bottom level. Any sh in a Dead
Setup Menu Alarms: Battery Sounds 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 depth determined by you. (If the either alarm is set and Depth units are changed, both alarms default to Off.) These alarms may be set to Off (default) or from 1-600 ft. Setup Menu Alarms: Fish Alarm Sounds an alarm when the unit detects what it determines to be a sh. The alarm selections are: Off (default) or On. Setup Menu Graph: Fish ID
Setup Menu Graph: Whiteline
Controls how the unit displays information about the bottom type (hard or soft). With Whiteline Off, the bottom return displays as solid black and contains no information on bottom hardness. With Whiteline On, the bottom return becomes a grayscale pattern and can be used to determine bottom hardness. A hard bottom returns a stronger signal and displays a thicker bottom layer. A weaker (soft) bottom return displays a thinner bottom layer. The selections are: Off or On (default). Setup Menu Graph: Noise Reject Filters unwanted noise from the graph (especially when moving at faster speeds) and can be turned Off or set to a xed value from 1-100%. Remember when setting the Noise Reject, the higher the noise rejection setting, the more likely the unit does not Determines how the graph displays underwater targets and background informa- show sh or structure. The selections are: 1-100% (default 50%) or Off. tion. If Fish ID is set to Off, the unit displays all of the available information about Setup Menu Numbers: Size the underwater environment. If a fish symbol is selected, the graph displays only the Displays either Normal (default) or Large depth, temp. and battery numbers. information related to that symbol (large, medium and small sizes). Setup Menu Numbers: Battery All available information is displayed. (default) Suspended targets displayed as symbols. No background information is Choose to either Hide (default) or Show the current battery voltage. displayed in this mode. Setup Menu Numbers: Water Temp. Same as above with target depth displayed. Suspended targets display as symbols. In this mode background Water Temp automatically displays when set to Auto (default) or you may choose information is still displayed making sh identication easier. to Hide the temperature numbers. Water temperature will only display if you have a Same as above with target depth displayed. temperature capable transducer.

Limited Warranty

This Garmin product is warranted to be free from defects in materials or workmanship for one year from the date of purchase. Within this period, Garmin will at its sole option, repair or replace any components that fail in normal use. Such repairs or replacement will be made at no charge to the customer for parts or labor, provided that the customer shall be responsible for any transportation cost. This warranty does not cover failures due to abuse, misuse, accident or unauthorized alteration or repairs. THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED OR STATUTORY, INCLUDING ANY LIABILITY ARISING UNDER ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, STATUTORY OR OTHERWISE. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, WHICH MAY VARY FROM STATE TO STATE. IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER RESULTING FROM THE USE, MISUSE, OR INABILITY TO USE THIS PRODUCT OR FROM DEFECTS IN THE PRODUCT. Some states do not allow the exclusion of incidental or consequential damages, so the above limitations may not apply to you. Garmin retains the exclusive right to repair or replace the unit or software or offer a full refund of the purchase price at its sole discretion. SUCH REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY. 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. To obtain warranty service, contact your local Garmin authorized dealer. Or call Garmin Customer Service for shipping instructions and a RMA tracking 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. The Fishnder 120 has no user-serviceable parts and is fastened shut with screws. Any attempt to open the case to change or modify the unit in any way will void your warranty and may result in permanent damage to the equipment.
Setup Menu Units: Depth Choose to display measurements in Feet (ft, default), Meters (m) or Fathoms (fa). (If the Depth Alarm is set when Units are changed, the Depth Alarm is defaulted to Off) Setup Menu Units: Temperature Choose to display the water temperature in Fahrenheit (F, default) or Celsius (C) Setup Menu System: Simulator

The Fishfinder 120 comes with a built-in simulator mode that allows you to practice and learn the operation of the unit at home rather than on the water. The unit indicates that it is running the simulator mode by displaying a message in the lower left of the display. While in the simulator mode, the unit displays a random bottom scene and the Fishfinder 120 can be controlled (except Noise Reject and Gain) just as if it were on the water. To exit the Simulator, turn the unit off. If no keys are pressed for 2 minutes, the unit automatically resets to default unit settings while in simulator mode. If the unit does not detect a transducer attached, it automatically starts in Simulator mode. Setup Menu System: Contrast Adjusts to compensate for different light levels or viewing angles.
Setup Menu System: Defaults This option allows you to restore the factory default settings for the unit.
Software License Agreement
By using the Fishnder 120, you agree to be bound by the terms and conditions of the following software license agreement. Please read this agreement carefully. Garmin grants you a limited license to use the software embedded in this device (the Software) in binary executable form in the normal operation of the product. Title, ownership rights and intellectual property rights in and to the Software remain in Garmin. You acknowledge that the Software is the property of Garmin and is protected under the United States of America copyright laws and international copyright treaties. You further acknowledge that the structure, organization and code of the Software are valuable trade secrets of Garmin and that the Software in source code form remains a valuable trade secret of Garmin. You agree not to decompile, disassemble, modify, reverse assemble, reverse engineer or reduce to human readable form the Software or any part thereof or create any derivative works based on the Software. You agree not to export or re-export the Software to any country in violation of the export control laws of the United States of America.
Zone is not detected by the sonar. The sh is never detected since the bottom level is never set below the sh. The sh on the right side of the display (shown in light grey) is detected and displayed when the transducer cone passes over the sh. It is important to understand that the unit does not display a 3-D representation of the underwater environment. The unit can display multiple things (such as a sh and a tree) at the same time but can not determine where the return originated, only when it was received. Remember that the Fishnder displays a 2-D picture of the underwater environment. A sh and an underwater structure could be located anywhere in the coverage area at that slice of time.

Dead Zone

Warning: This product, its packaging, and its components contain chemicals known to the State of California to cause cancer, birth defects, or reproductive harm. This Notice is being provided in accordance with Californias Proposition 65. If you have any questions or would like additional information, please refer to our web site at www.garmin.com/prop65.
Copyright 2003 Garmin LTD. or its subsidiaries GARMIN, DCG and See-Thru are registered trademarks of Garmin Ltd. or its subsidiaries and 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. 913/397.8282 Garmin (Europe) Ltd. Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9DL, U.K. Tel. 44/1794.519944 Fax.44/1794.519222 Garmin Corporation No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan Tel. 886/2.2642.9199 Fax. 886/2.2642.9099 www.garmin.com Part Number 190-00306-00 Rev. A

. (812) 320 5565

FF120

WWW.BADGER.RU

. (812) 320 5565

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