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Garmin 240 - page 1
owner’ s manual Fishfi nder 240 240 updated covers.indd 08/16/00, 3:25 PM 1 ...
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Garmin 240 - page 2
© 2000 GARMIN Corporation GARMIN International, Inc. 1200 East 151st Street, Olathe, Kansas 66062, U.S.A. T el. 913/397.8200 or 800/800.1020 Fax 913/397.8282 GARMIN (Europe) Ltd. Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey , SO51 9AQ, U.K. T el. 44/1794.519944 Fax 44/1794.519222 GARMIN (Asia) Corporation No. 68, Jangshu 2nd Road, ...
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Garmin 240 - page 3
i Introduction Help us better support you by completing our on-line registration today! Have the serial number of your Fishfi nder 240 handy and connect to our website (www .garmin.com). Look for the Product Registration link on the Home page. Why should you register your Fishfi nder 240? • Notifi cation of Product Updates • Notifi cation o ...
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Garmin 240 - page 4
ii Introduction GARMIN Corporation warrants this product to be fr ee from defects in materials and manufacture for one year fr om the date of purchase. GARMIN will, at its sole option, repair or replace any components that fail in normal use. Such r epairs or replacement will be made at no char ge to the customer for parts or labor . The customer i ...
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Garmin 240 - page 5
iii Introduction P ackaging and Accessories The Fishfi nder 240 Standard Package contains the following items: • Fishfi nder 240 • Protective Fr ont Cover • Surface/Flush Mount Kit • W iring Adapter Cable • Owner’ s Manual • Quick Reference Guide • * T ransom Mount T ransducer (w/depth/temp) * Optional Optional T ransducers: 010-1 ...
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Garmin 240 - page 6
iv Introduction T able of Contents Introduction.......................................................................... i-vi Customer Service ............................................................................................... i Limited W arranty .......................................................................................... ...
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Garmin 240 - page 7
v Introduction T able of Contents Alarms Fish Alarm ..................................................................................................... 22 Shallow W ater ................................................................................................. 22 Deep W ater ................................................................. ...
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Garmin 240 - page 8
vi Introduction The Fishfi nder 240 is able to display a variety of useful information about the underwater environment. Below are a few things the unit will help you see. Water Depth T he unit displays water depth and can provide a warning for shallow or deep-water conditions . Battery V oltage T he unit can display the battery voltage that is av ...
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Garmin 240 - page 9
1 Installation Selecting a T ransducer T ransducers The transducer acts as the eyes and ears of your new sonar . Proper transducer selection and installation are critical to the operation of your unit. The transducer transmits sound waves toward the bottom in a cone shape. The larger the cone angle the lar ger the coverage area at a given depth. Wh ...
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Garmin 240 - page 10
2 Installation Mounting the T ransducer Proper transducer installation is key to getting the best performance from your new unit. If the transducer lead is too short, extension cables are available fr om you GARMIN dealer . DO NOT cut the transducer lead, this will void your warranty . Following are some tips and basic installation i nstructions fo ...
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Garmin 240 - page 11
3 Installation Mounting the T ransducer In-hull Installation The 010-10224-00 transducer is designed to be mounted inside a fiberglass hull. The standar d plastic transom mount transducer can also be mounted in this fashion using this method. If using a temperature sensing transducer , the temperature displayed will reflect the hull temperature. Se ...
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Garmin 240 - page 12
4 Installation Slide clamp band through slot in bracket Clamp Band Cable Ties Worm Gear Mounting the T ransducer T rolling Motor Installation Included in the 010-10251-00 transducer kit you should have: • Worm Gear Clamp • Cable Ties • T ransducer Mounting the T ransducer: 1. Loosen the Worm Gear Clamp until end of the band is clear of the wo ...
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Garmin 240 - page 13
5 Installation Installing the Wiring Harness Wiring Harness Installation The Fishfinder 240 comes with a wiring harness that connects the unit to power and the transducer with one easy-to-remove connection. Make sure the wiring harness will reach the unit before beginning installation. If it is necessary to extend the power/data wires, use a wire o ...
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Garmin 240 - page 14
6 Installation Wiring Harness Installation (continued) If your boat does not have a fuse block, the unit can be wired directly to the battery . Make sure the 2-Amp in-line fuse supplied with the unit is installed. The Fishfi nder 240 can be connected to another piece of NMEA com- patible electronic equipment. If equipped with a capable transducer ...
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Garmin 240 - page 15
7 Installation Installing the Display Display Installation (Surface Mount) The Fishfi nder 240 can be mounted to a fl at surface using the supplied Surface Mounting Bracket. Surface Mounting the Display: 1. Position the Surface Mount in the desired location. Leave approximately 2'’ behind the unit for cable clearance . 2. Mark the location ...
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Garmin 240 - page 16
8 Installation Installing the Display Display Installation (Flush Mount) The Fishfi nder 240 can be mounted fl ush against a dash or electronics rack that is no more than 1/4” thick. Flush Mounting the Display: 1. Remove the Surface Mount Brack et and Knobs . 2 Cut a 4.3”W x 4.35”H relief hole where the unit will be mounted. 3. Place the di ...
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Garmin 240 - page 17
9 Installation T esting the Installation T esting the Installation While it is possible to perform some checks with the boat trailered, to properly test the installation the boat should be in the water . Press the Power button and the Fishfinder 240 should power on. If the unit fails to power on, verify that the wiring adapter is seated properly in ...
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Garmin 240 - page 18
10 Unit Operation K eypad Function Arrow Keys Th e Arrow K eys are used to select items on the Adjustment Bar and Setup menu and to change fi eld data. Enter Key T he Enter key is used to activ ate/deactivate Adjustment Bar and Setup Menu data fi elds for review or change Setup Key T he Setup key is used to activ ate/deactivate Setup Menu. Power ...
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Garmin 240 - page 19
11 Unit Operation At the top left of the display you will find the Adjustment Bar and a variety of user-selectable information including Depth, Battery Voltage, Water Temperature, and Speed Over Water. T o provide data on Water Temperature and Speed Over Water, the Fishfinder 240 requires additional sensors capable of producing the particular data. ...
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Garmin 240 - page 20
12 Unit Operation The Adjustment Bar Using the Adjustment Bar The Adjustment Bar allows direct access to the settings most commonly changed while using the unit. These include the depth Range, Zoom setting, and the Gain (sensitivity) of the unit. Place the highlight (white bar) over the desired selection using the RIGHT or LEFT Arrow key and the cu ...
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Garmin 240 - page 21
13 Unit Operation The Adjustment Bar Zoom The Zoom Adjustment is used to quickly select a display zoom scale. T o change the zoom scale: 1. Highlight ‘Zoom’ on the Adjustment Bar . 2. Using the UP or DOWN Arrow , select the desired display zoom level. When a scale other than ‘No Zoom’ is selected, the Adjustment Bar will display a new selec ...
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Garmin 240 - page 22
14 Unit Operation Gain The Gain Adjustment allows the user to control the sensitivity of the unit’ s receiver . This provides some flexibility in what is seen on the display . T o see more detail, increase the receiver sensitivity by selecting a higher gain (+). If there is too much detail or if the screen is clutter ed, lowering the sensitivity ...
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Garmin 240 - page 23
15 Unit Operation Setup Menu/Chart Setup Menu The Setup Menu contains the unit settings that should not require frequent change. The Setup Menu is divided into eight tabs: Chart, T ools, Numbers, Alarms, System, Calibrations, Units, and Memory . Each tab will be described in more detail in this section. T o enter and exit the Setup Menu, pr ess the ...
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Garmin 240 - page 24
16 Unit Operation Setup Menu/Chart Whiteline ‘Whiteline’ controls how the unit displays information about the bottom type (hard or soft). W ith the Whiteline ‘OFF’, the bottom return will display as black and contain no information on bottom hardness. W ith Whiteline ‘ON’, the bottom return will become gray scaled and can be used to det ...
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Garmin 240 - page 25
17 Unit Operation Setup Menu/Chart Scale The depth ‘Scale’ is displayed vertically along the right side of the chart. The depth ‘Scale’ can be configured to display four dif ferent ways: as an ‘Overlay’, in the ‘Corners’, with ‘Basic’ or ‘No Scale’. T o Change the Scale Setting: 1. Highlight the ‘Chart’ tab on the Setup ...
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Garmin 240 - page 26
18 Unit Operation Setup Menu/T ools T ools The T ools tab contains the ‘Depth Line’, ‘Noise Reject’, ‘Flasher’, and ‘Simulator’ tools. The ‘Depth Line’ tool is used to quickly identify a set depth or measure the depth of underwater objects. The ‘Noise Reject’ and ‘Flasher’ tools are used to enhance the chart and help in ...
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Garmin 240 - page 27
19 Unit Operation Setup Menu/T ools Remember when setting the Noise Reject tool, the higher the noise rejection setting, the more likely the unit is to not show fi sh or structure . T o Change the Noise Reject Setting: 1. Highlight the ‘T ools’ tab on the Setup Menu. 2. Highlight the ‘Noise Reject’ selection fi eld and press ENTER . 3. Ch ...
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Garmin 240 - page 28
20 Unit Operation Setup Menu/Numbers Numbers The ‘NUM’ (Numbers) tab allows you to choose whether you would like to see normal or large numbers on the chart. Y ou can also configure the unit to display ‘Battery V oltage’, (water) ‘T emperature’, and ‘Speed’ Over W ater if the unit is equipped with a capable transducer . T o access t ...
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Garmin 240 - page 29
21 Unit Operation Setup Menu/Numbers T emperatur e The Fishfinder 240 can display the water temperature when equipped with a temperature sensing transducer . The unit has the ability to automati- cally sense when a temperature capable transducer is connected and display the water temperature. The temperature field can be shown or hidden regar dless ...
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Garmin 240 - page 30
22 Unit Operation Setup Menu/Alarms Alarms The ‘Alarm’ tab allows you to activate and configure the four alarms available in the Fishfinder 240. T o access the ‘Alarm’ tab place the highlight over it using the arrow keys. See page 35 for alarm icons and messages. Fish Alarm The ‘Fish Alarm’ can be confi gured to sound by fi sh size. T ...
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Garmin 240 - page 31
23 Unit Operation Setup Menu/Alarms Deep Water The ‘Deep W ater’ Alarm can be set to sound a warning at a depth determined by the user . Before the unit will sound a warning the alarm must be activated. Activating/Deactivating the Deep W ater Alarm: 1. Highlight the ‘ Alarm’ tab on the Setup Menu. 2. Highlight the ‘Deep W ater’ checkbox ...
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Garmin 240 - page 32
24 Unit Operation System The ‘Sys’(System) tab contains the ‘Contrast’, ‘Beeper’, and ‘NMEA ’ Output setups. T o access the ‘System’ Setup Menu, use the arr ow keys to highlight the System tab. Contrast The display ‘Contrast’ may need to be adjusted to compensate for light levels or viewing angles. T o Adjust the Contrast: 1 ...
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Garmin 240 - page 33
25 Unit Operation Setup Menu/Calibrations Calibration Keel Offset The ‘Keel Offset’ fi eld allows the user to of fset the depth reading for a keel or for the draw on a larger vessel . T o Set a K eel Offset: 1. Highlight the ‘Calibr ation’ tab on the Setup Menu. 2. Highlight the ‘K eel Offset’ fi eld and press ENTER . 3. Using the arr ...
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Garmin 240 - page 34
26 Unit Operation Setup Menu/Units Units The ‘Units’ tab contains settings for ‘Depth’, ‘T emperature’ and ‘Speed’. T o access the ‘Units’ tab, use the arr ow keys to highlight it. Depth The ‘Depth’ fi eld can be confi gured to display in Feet (ft), Meters (mt) or Fathoms (fa). T o Select a Depth Unit: 1. Highlight the ‘ ...
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Garmin 240 - page 35
27 Unit Operation Setup Menu/Memory Memory The ‘Memory’ tab contains the settings for unit memory , allows you to reset the unit to the factory setup and allows you to review software version information. T o access the ‘Memory’ tab, use the arr ow keys to highlight it. Remember The Fishfi nder 240 can be set to remember All of the unit se ...
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Garmin 240 - page 36
28 On the W ater 28 On the W ater 1 1 2 2 3 3 Understanding Sonar If you are familiar with sonar , and can determine what is on the chart, this section may not be for you. This section is intended to help the novice user gain some understanding of how the Fishfinder 240 operates and how it can help improve their fishing pr oductivity . T o understa ...
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Garmin 240 - page 37
29 On the W ater 29 On the W ater T ransducer Coverage T ransducer Cover age The area covered by the transmitted sound waves is determined by the cone angle of the transducer and the water depth. Using Garmin’ s standard 20° transducer , the coverage is approximately 1/3rd of the water depth. As shown in Example 1, the coverage area at a 30 foot ...
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Garmin 240 - page 38
30 On the W ater 30 On the W ater Understanding the Chart Understanding the Chart It is important to understand that the unit does not display a 3-D repre- sentation of the underwater environment. The unit can display multiple things at the same time, but can not determine where the return originated only when it was received. Example 2 provides a ...
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Garmin 240 - page 39
31 On the W ater 31 On the W ater Understanding the Chart Whiteline The Fishfi nder 240 can help you to determine if the bottom is hard or soft. When the sonar soundwaves are refl ected back by the bottom, a hard bottom will r etur n a stronger signal than a soft bottom. The str onger bottom return, the wider the bottom layer is displayed. The un ...
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Garmin 240 - page 40
32 On the W ater 32 On the W ater Understanding the Chart Thermoclines One of the unique features of fered by GARMIN is See-Thru® technol- ogy . See-Thru® technology allows the Fishfinder 240 to see through thermoclines and helps locate fish where they live, and fish love the thermocline. A rough defi nition of a thermocline is a break in water ...
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Garmin 240 - page 41
33 On the W ater 33 On the W ater Simulator Mode Simulator Mode The Fishfinder 240 comes with a built-in simulator mode that will allow the user to practice and learn the operation of the unit at home rather than on the water . T o start the simulator mode, turn the unit on without a transducer installed. As the unit powers on, the unit will indica ...
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Garmin 240 - page 42
34 On the W ater 34 Appendix A Specifi cations Physical Case: Fully Gasketed, high-impact plastic alloy Display: 3.3” x 3.3” (8.3 x 5 cm) 240 H x 240 W pixels Size: 4.625” H x 6.0” W x 2.75” D (11.7 x 15.2 x 7cm) Weight: 24 oz. T emperature Range: +5° to 158°F (-15C to 70C) W aterproof: IEC 529, level IPX-7 (submerged to 1 meter for 30 ...
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Garmin 240 - page 43
35 On the W ater 35 Appendix B Alarm Messages and Icons The Fishfinder 240 displays a message when an alarm is tripped. T o clear the message press the ENTER key . If the ENTER key is not pressed, the unit will automatically remove most messages after 10 seconds and display a reminder icon in the lower left corner of the chart until the alarm is no ...
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Garmin 240 - page 44
36 On the W ater 36 Appendix C Fishfi nder 240 P ortable Fishfinder 240 Portable The Portable Case The Portable Case is designed for rugged use and provides storage for the Battery Pack and the Portable Suction Cup T ransducer and a mount for the Fishfi nder 240. The case is water resistant but is not designed to fl oat in the event it should go ...
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Garmin 240 - page 45
37 On the W ater 37 Appendix C Fishfi nder 240 P ortable When storing the Suction Cup T ransducer in the case, dry the trans- ducer and cable to avoid corrosion. If using in Salt W ater , rinse the transducer and cable in fresh water and dry before storing in the case. Batteries The Fishfi nder 240 Portable comes with a D-Cell battery pack. Eight ...
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Garmin 240 - page 46
38 On the W ater 38 Appendix D Index A Accessories ..................................................................................................... iii Adjust the Scroll Speed .................................................................................. 16 Adjustment Bar .................................................................... ...
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Garmin 240 - page 47
39 On the W ater 39 Appendix D Index I In-hull Installation .......................................................................................... 3 Installing the Display ....................................................................................... 7 K Keel Offset ...................................................................... ...
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Garmin 240 - page 48
40 On the W ater 40 Appendix D S Software V ersion ............................................................................................ 27 Specifi cations ................................................................................................ 34 Speed ................................................................................ ...
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Garmin 240 - page 49
240 updated covers.indd 08/16/00, 3:25 PM 3 ...
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Garmin 240 - page 50
© 1999 - 2000 GARMIN Corporation GARMIN International, Inc. 1200 East 151st Street, Olathe, Kansas 66062, U.S.A. GARMIN (Europe) Ltd. Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey , SO51 9AQ, U.K. GARMIN (Asia) Corporation No. 68, Jangshu 2 nd Road, Shijr , T aipei County , T aiwan www .garmin.com Part Number 190-00155-10 Rev . A 24 ...
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