Garmin 400C Owner's Manual
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Garmin 400C Owner's Manual

Garmin fish finder user manual
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Fishfinder 400C
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  • Page 1 Fishfinder 400C owner’s manual...
  • Page 2 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 improvements. 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.

  • Page 3: Table Of Contents

    The Fishfinder 400C is a full-featured, color sonar that offers a choice of display styles, a dual beam or dual frequency option, and more. Fishfinder 400C Tips and Shortcuts • Press HOME from any screen to return to the Home screen.
  • Page 4 Step 4: Install the Wiring Harness ... Step 5: Test the Installation ... Basic Operation ...15 Turning the Fishfinder 400C On or Off ... Adjusting the Backlight Setting ... Using Simulator Mode ... Using the Fishfinder 400C Keypad ... Understanding the Home Screen ...

  • Page 5: Cleaning The Screen

    Connect to our Web site at www.garmin.com/registration/. Use this area to record the serial number (8-digit number located on the back of the Fishfinder 400C) in case your Fishfinder 400C needs service. Keep the original sales receipt, or a photocopy, in a safe place.

  • Page 6: Warnings

    Important Information The California Waste Recycling Act of 2003 requires the recycling of certain electronics. For more information on the applicability to this product, see www.erecycle.org. www.garmin.com/prop65 For more information go to: www.garmin.com/aboutGarmin/environment/disposal.jsp. for more information. Fishfinder 400C Owner’s Manual...

  • Page 7: Installing The Fishfinder 400C

    DO NOT mount the unit in an area that is exposed to extreme temperature conditions. NOtE: The temperature range for the Fishfinder 400C 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.

  • Page 8: Mounting The Fishfinder 400C

    The Fishfinder 400C’s compact, waterproof case is suitable for mounting in exposed locations or at the nav station. The Fishfinder 400C comes with a tilt/swivel mounting bracket that can be used for console or overhead mounting. Mounting the Bracket Assembly tools (not included)—drill, screwdriver (Phillips or standard), and...
  • Page 9 • 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. 3. Secure the swivel base with three bolts or screws. DO NOT OVERTIGHTEN. 4. Place the swivel mount bracket over the swivel base and secure it with the short knob. Fishfinder 400C Owner’s Manual nstallIng the Installing the Fishfinder 400C on the Mounting Bracket To install the unit 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 apart. (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.

  • Page 10: Step 3: Install The Transducer

    Proper transducer installation is key to getting the best performance from your fishfinder. If the transducer lead is too short, extension cables are available from your Garmin dealer. Coil and secure any excess cable. CAUtION: DO NOT cut the transducer lead or any part of the transducer cable, because cutting the transducer cable voids your warranty.

  • Page 11: Mounting The Transducer On A Trolling Motor

    4-5" worm gear clamp is recommended. 2. Position the mount gasket on the curved top of the transducer 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. 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.) 5. 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.) Fishfinder 400C Owner’s Manual nstallIng the 6. 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. Cable tie Front of the transducer IshFInder...

  • Page 12: Mounting The Transducer On A Transom

    400c nstallIng the IshFInder Mounting the Transducer on a Transom Fishfinder 400C Owner’s Manual...
  • Page 13 The transducer must be in clean (non-turbulent) water for optimal performance. Fishfinder 400C Owner’s Manual nstallIng the 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.

  • Page 14: Shoot-Thru-Hull Installation

    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. Fishfinder 400C Owner’s Manual...
  • Page 15 1. Fabricate a test device from a section of PVC pipe or a can, as shown in the following illustration. 2. Temporarily seal the test device to the hull with caulking or RTV sealer, and fill with water or light mineral oil. 3. 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. Fishfinder 400C Owner’s Manual nstallIng the Weight the transducer PVC pipe to hold it in place. or a can Fill a pipe or can with Strip caulk or water or a light mineral oil.

  • Page 16: Step 4: Install The Wiring Harness

    IshFInder Step 4: Install the Wiring Harness The Fishfinder 400C comes with a wiring harness that connects the fishfinder to power and the transducer with one easy-to-remove connection and provides interface capabilities for connecting external devices. The color code in the diagram (see page harness connections.
  • Page 17 PIN 13 - Red (DC Positive) PIN 12 - White (CANet H) PIN 16 - Green (CANet L) PIN 18 - Blue (NMEA Out) DC Power Fishfinder 400C Pin Assignment Source CANet L CANet H Fishfinder 400C Wiring Harness Fishfinder 400C Owner’s Manual...
  • Page 18 IshFInder Connecting to a NMEA device You can connect the Fishfinder 400C to another piece of NMEA compatible electronic equipment, such as a Garmin GPS (Global Positioning System) device. If equipped with a capable transducer, the Fishfinder 400C can send depth, temperature, and speed information.

  • Page 19: Step 5: Test The Installation

    Step 5: Test the Installation To turn on your Fishfinder 400C for the first time, press and hold the and the SElECt key and follow the screens to configure your Fishfinder 400C. NOtE: Although it is possible to perform some checks with the boat trailered, the boat should be in the water to properly test the installation.
  • Page 20 NOtE: When adjusting the depth of the transducer, make the 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 underwater objects. Fishfinder 400C Owner’s Manual...

  • Page 21: Basic Operation

    Press and hold the POWER key until the unit beeps and the Home screen appears. NOtE: When you turn on the Fishfinder 400C for the first time, you have to select a language, transducer type, units of measure, and color scheme.

  • Page 22: Understanding The Home Screen

    Understanding the Home Screen When you turn on your Fishfinder 400C, the Home screen appears. Press up or down on the ROCKER, and then press SElECt to choose an option. NOtE: Options on this screen vary based on the type of transducer installed.

  • Page 23: Understanding The Full Screen

    Transducer mode Bottom Fishfinder 400C Owner’s Manual Understanding the Split Zoom Screen Use the Split Zoom screen to view the full sonar data from the graph as well as a zoomed in portion on the same screen. On the Home screen, highlight Split Zoom Screen, and press SElECt.

  • Page 24: Understanding The Flasher Screen

    Use the Split Freq screen (dual frequency transducer only) to view both the 50kHz and 200kHz frequencies on the same screen. On the Home screen, highlight Split Freq, and press SElECt. Depth, temperature and speed Water Temp Depth Frequencies Odometer Range Fishfinder 400C Owner’s Manual...

  • Page 25: Understanding The Numbers Screen

    Water Temp field appears. If you are using a speed- capable transducer, the Water Speed and Odometer fields appear. Fishfinder 400C Owner’s Manual Understanding the Temp Log Screen If you are using a temperature-capable transducer, the Temp Log screen keeps a graphic log of temperature readings over time.

  • Page 26: Understanding The Configure Screen

    Understanding the Configure Screen The Configure screen contains the main configuration options for the Fishfinder 400C. From this screen, you can define and adjust settings universal to all Fishfinder 400C screens. On the Home screen, highlight Configure, and press SElECt.

  • Page 27: Customizing The Fishfinder 400C

    IshFInder Setting Alarms You can set the Fishfinder 400C to sound an audible alarm when certain conditions are met. By default, all alarms are turned off. To set an alarm, on the Configure screen, highlight Alarms, and press SElECt.

  • Page 28: Changing The Sonar Settings

    Numbers or Temp Log screens. Fish Symbols—set how the Fishfinder 400C interprets suspended targets. The Fishfinder 400C does not interpret the sonar return data. (default) Suspended targets appear as symbols. Background sonar information appears, making the distinction between fish and structure easier.

  • Page 29: Changing The System Settings

    The three settings are Off, Alarms Only (default), and On (keys and alarms). Simulator—turn on the Simulator to have the Fishfinder 400C act as though a transducer is connected. NMEA Output— connect the Fishfinder 400C to NMEA compatible electronic equipment (such as a Garmin GPS device) and send information.

  • Page 30: Customizing Units Of Measure

    Water temp —select Fahrenheit (°F) or Celsius (°C) (with a compatible transducer). Water Speed—select Miles/Hour (mh), Kilometers/Hour (kh), or Knots (kt) (with a compatible transducer). Distance—select Statute (mi), Metric (km), or Nautical (nm) (with a compatible transducer). Fishfinder 400C Owner’s Manual...

  • Page 31: Advanced Settings

    Highlight Manual Range and press SElECt to manually adjust the scope of the depth scale. Gain—controls the sensitivity of the Fishfinder 400C’s sonar receiver. By default, the Gain is set to Auto, which automatically sets the sonar sensitivity.

  • Page 32: Resetting The Odometer

    Setting the Temp Log Duration and Scale On Temp Log screen, press MENU to view advanced options. Duration—set the scope of time along the bottom of the graph. Scale—set the temperature span along the right side of the graph. (page 18). The Fishfinder 400C Owner’s Manual...

  • Page 33: Appendix

    Web site (www.garmin.com): Flush Mount Kit—mounts your fishfinder flush on the bulkhead or cabin wall. CANet™ Connection Kit—allows you to connect your Fishfinder 400C to CANet-capable Garmin chartplotters, so you can read sonar displays on chartplotters located elsewhere in the boat. ppendIx...

  • Page 34: Alarms And Messages

    Alarms and Messages The Fishfinder 400C uses an on-screen message system to alert you to unit operating characteristics. When a message appears, press SElECt to acknowledge the message and return to the screen you were viewing. battery Alarm—battery voltage has fallen below the value entered in the Battery Alarm setup.

  • Page 35: Limited Warranty

    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.

  • Page 36: Declaration Of Conformity (Doc)

    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...

  • Page 37: Index

    CANet 12, flush mount 2, caring for the fishfinder frequency cleaning full screen the case fuse 10, the screen Fishfinder 400C Owner’s Manual surface noise gain GPS, wiring to a HOME key Home screen important information input voltage installing selecting a location...
  • Page 38 Ultrascroll voltage warnings warranty. limited warranty waterproof. water immersion water speed calibrate water temperature 24, whiteline wiring harness installing 10–12 zoom depth split 17, water immersion Fishfinder 400C Owner’s Manual...
  • Page 40 For the latest free software updates (excluding map data) throughout the life of your Garmin products, visit the Garmin Web site at www.garmin.com. © 2006, 2007 Garmin Ltd. or its subsidiaries Garmin International, Inc. 1200 East 151 Street, Olathe, Kansas 66062, USA Garmin (Europe) Ltd.

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