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Fishfinder 250/250C
high-resolution sonar
owner’s manual
(Fishfinder 250C shown)
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© Copyright 2005 Garmin Ltd. or its subsidiaries Garmin International, Inc. Garmin (Europe) Ltd. Garmin Corporation st nd 1200 East 151 Street Unit 5, The Quadrangle No. 68, Jangshu 2 Road Olathe, Kansas 66062, U.S.A. Abbey Park Industrial Estate Shijr, Taipei County, Taiwan Tel. 913/397.8200 or 800/800.1020 Romsey, SO51 9DL, U.K. Tel. 886/2.2642.9199 Fax 913/397.8282 Tel. 44/0870.8501241 Fax 886/2.2642.9099 Fax 44/0870.8501251 All rights reserved. Except as expressly provided herein, no p
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INTRODUCTION Enjoy your new Fishfinder 250/250C, and once again thank you for INTRODUCTION choosing Garmin! ® Thank you for choosing the Garmin Fishfinder 250/250C. This product is designed for easy operation and to provide years of Product Registration reliable service. Help us to better support you by completing our online registration today! Connect to our Web site (www.garmin.com) and Operations for the Fishfinder 250 and Fishfinder 250C are the look for the Product Registration link on the
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TABLE OF CONTENTS Using the Main Menu ............................................................ 21 TABLE OF CONTENTS Graph Tab ..................................................................................... 21 Tools Tab ....................................................................................... 23 Introduction .........................................................................iii Configuring Advanced Data Fields ......................................... 23 Product Suppo
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GETTING STARTED > PACKING LIST Fishfinder 250C Standard Package (010-00341-00 w/o GETTING STARTED transducer): • Fishfinder 250C Unit Packing List • Swivel-Mount Bracket and Knobs Before installing and using your Fishfinder 250/250C, check to see • Power/Data Cable that your package includes the following items. The package part • Owner’s Manual number can be found on the outside of the box. If any parts are • Self-Adhesive Quick Reference Guide • Protective Cover missing, contact your Garmin
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GETTING STARTED > TRANSDUCERS Optional Transducers Transducers Included in the Optional Packages (page 1) are transom mount The transducer acts as the eyes and ears of your sonar, transmitting transducers and separate speed sensors. These transducers provide sound waves toward the bottom in a cone shape. Proper transducer good all-around performance. In addition, a variety of optional selection and installation are important to the operation of your unit. transducers are available from you
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GETTING STARTED > INSTALLATION When choosing a location for the unit, consider the following Installation conditions: The Fishfinder 250/250C must be properly installed according to the following instructions to get the best possible performance. To • There should be at least a 3” (8 cm) clearance behind the case complete the installation, you need the appropriate fasteners and to allow connection of the transducer and power/data cables. tools. Verify that all cables can reach the unit mount
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GETTING STARTED > INSTALLATION To install the swivel-mount bracket: Tools (not included)—Drill, screwdriver (Phillips or OK standard), and either of the following: • Three #8 (4mm) pan head machine bolts with matching The swivel base is designed to be secured using a pan head screw nuts and washers and a 5/32” (5mm) drill bit. or machine bolt. If you use a screw with a countersunk head, you risk • Three #8 pan head self-tapping screws and an damaging the mounting bracket.
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GETTING STARTED > INSTALLATION To install the unit on the bracket 1. Align the slot on the back of the unit with the long mounting knob, and slide the unit into place. You may need to adjust the long mounting knob to spread the bracket arms apart. (Turn counter-clockwise to widen the bracket arms, clockwise to tighten.) 2. Adjust the unit angle and tighten the long mounting knob until snug. 3. To tilt the unit, loosen the long mounting knob on the right side of the bracket assembly. 4. To
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GETTING STARTED > INSTALLATION NOTE: Be very careful when cutting this hole; there is only a Flush Mounting the Fishfinder 250/250C Unit small amount of clearance between the unit and the mounting The Fishfinder 250/250C can be flush mounted on a flat panel. When holes. It may be prudent to cut slightly inside the indicated line flush mounting the Fishfinder 250/250C, choose an appropriately and then sand or file the panel as needed to obtain the best fit. sized location for the unit. Use the Flus
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GETTING STARTED > INSTALLATION Connecting the Power/Data Cable The power/data cable connects the Fishfinder 250/250C to a 10-35 To 10-35 Volt boat supply Volt DC system and provides interface capabilities for connecting external devices. The color code in the diagram (page 9) indicates the appropriate harness connections. If it is necessary to extend the power/data wires, use a wire of comparable size and keep your extension as short as possible. + 2-Amp The unit can be wired directly to yo
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GETTING STARTED > INSTALLATION The Fishfinder 250/250C can be connected to another piece of Interfacing NMEA compatible electronic equipment, such as a Garmin GPS The Fishfinder 250/250C allows for NMEA 0183, Version 2.3 (Global Positioning System). If equipped with a capable transducer, input/output with a compatible GPS or navigation device. NMEA the Fishfinder 250/250C can send depth, temperature, and speed Input/Output must be set to On to send/receive data (page 27). information to the
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GETTING STARTED > INSTALLATION To Transducer (TX COM 2) (Red) + 10-35 VDC DC Positive (RX COM 2) Power 10-35 Volts DC (Black) - Ground (Power/Data) (TX COM 1) (RX COM 1) (Blue) Port 1 Data OUT To Unit During a typical installation, only the Red and Black wires are used. The other wires do not have to be (Brown) Port 1 Data IN RXD + GPS/NMEA connected for normal operation of the unit. Device (White) Port 2 Data IN (N/C) TXD + (Green) Port 2 Data OUT and RXD - NMEA Device (Yellow) Alarm Low Co
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GETTING STARTED > INSTALLATION Installing the Transducer Proper transducer installation is key to getting the best performance T o U nit from your new unit. If the transducer lead is too short, extension cables are available from your Garmin dealer. Coil and secure any excess cable. DO NOT cut the transducer lead or any part of the transducer cable, as this will void your warranty. The cable cannot be spliced and connected to any existing (Garmin or non-Garmin) transducer cables. ����� � �
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GETTING STARTED > INSTALLATION NOTE: Many modern hulls have a prelocated pocket for Shoot-Thru-Hull Installation shoot-thru-hull transducer installation. If you are unsure if your To avoid drilling a hole to mount a thru-hull transducer, a transducer hull is equipped with a pre-located pocket, contact your hull may be secured with epoxy inside a boat (“shoot-thru-hull” manufacturer. installation). This type of installation can reduce noise and allow you to use a higher gain setting. For a
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GETTING STARTED > INSTALLATION Since water is necessary to carry the sounder’s sonar signal, the To permanently install the transducer: 1. Lightly sand the surface of the hull and face of the transducer transducer must be in the water to work properly. It is not possible with 400-grit wet or dry sandpaper. to get a depth/distance reading when out of the water. As the unit 2. Build a dam using strip caulk about 1/4” (6mm) tall. Pour powers on, it should immediately start showing the bottom. V
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BASIC OPERATION > USING THE KEYPAD BASIC OPERATION NOTE: Press and release a key to activate its primary function. Using the Keypad Pressing and holding a key activates its secondary function (if available). The keypad contains the following keys: ARROW Keys—press to select (highlight) menu options and enter data. Press to control movement of the cursor when paused in Pointer mode. Allows direct control of Sonar page adjustments. ENTER Key—press to select a highlighted menu option. When en
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BASIC OPERATION > USING THE SONAR PAGE The currently selected adjustment option (page 17) is displayed in Using the Sonar Page the top left of the screen. Directly below the adjustment option, the The Sonar page is where your Fishfinder 250/250C becomes a screen displays numeric data such as Depth, Water Temperature powerful fishfinder/flasher. If the unit does not detect a transducer, and Water Speed (pages 23-24). The middle of the page contains a “Sonar Turned Off” message is displayed on t
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BASIC OPERATION > USING THE SONAR PAGE The display may also be set to show a split screen view of a zoomed portion of the sonar, bottom lock (display scaled from the bottom up), or a combination of these options (pages 17-18). For example, you may choose to show dual frequency at a 2x zoom (Dual 2x) on one half of the screen, with normal range dual frequency (Dual) on the other half. The current display mode is shown at the bottom of each sonar display. The Fishfinder 250 displays sonar ret
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BASIC OPERATION > USING THE ADJUSTMENT MENU 2. Press the Up or Down ARROW keys to highlight the desired Using the Adjustment Menu option and press ENTER to display the adjustment window. The Adjustment Menu allows direct access to the settings and 3. Press the Up or Down ARROW keys to move the setting features most commonly used on the Sonar page. There are 10 main bar (or pointer) to the desired adjustment options available: Range, Zoom, View, Gain, Target percentage (Off, 1-100%), sett
