Garmin Fishfinder 400c Sonar System With Saltwater Transducer

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Garmin Fishfinder 400c Sonar System With Saltwater Transducer | Manualzz
Fishfinder 400C
owner’s manual
© 2006, 2007 Garmin Ltd. or its subsidiaries
Garmin International, Inc.
1200 East 151st Street,
Olathe, Kansas 66062, USA
Tel. (913) 397.8200 or (800) 800.1020
Fax (913) 397.8282
Garmin (Europe) Ltd.
Liberty House
Hounsdown Business Park,
Southampton, Hampshire, SO40 9RB UK
Tel.+44 (0) 870.8501241 (outside the UK)
0808 2380000 (within the UK)
Fax+44 (0) 870.8501251
Garmin Corporation
No. 68, Jangshu 2nd Road,
Shijr, Taipei County, Taiwan
Tel. 886/2.2642.9199
Fax 886/2.2642.9099
All rights reserved. Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted, disseminated, downloaded or stored in
any storage medium, for any purpose without the express prior written consent of Garmin. Garmin hereby grants permission to download a single copy of this
manual onto a hard drive or other electronic storage medium to be viewed and to print one copy of this manual or of any revision hereto, provided
that such electronic or printed copy of this manual must contain the complete text of this copyright notice and provided further that any unauthorized
commercial distribution of this manual or any revision hereto is strictly prohibited.
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.
Garmin®, CANetTM, See-Thru®, and UltrascrollTM are registered trademarks or trademarks of Garmin Ltd. or its subsidiaries and may not be used without the
express permission of Garmin.
March 2007
Part Number 190-00757-00 Rev. C
Printed in Taiwan
Introduction
Introduction
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.
• Press MENU from any of the main screens to access
advanced settings.
• Press and release the POWER key to adjust the display
settings.
Quick Links
•
•
•
•
•
•
•
•
•
Installing the Fishfinder 400C: page 1
Mounting the Fishfinder 400C: page 2
Installing the Transducer: page 4
Basic Operation: page 15
Customizing the Fishfinder 400C: page 21
Changing the System Settings: page 23
Customizing the Transducer Settings: page 23
Advanced Settings: page 25
Alarms and Messages: page 28
Fishfinder 400C Owner’s Manual
Introduction
Table of Contents
Introduction............................................................................i
Fishfinder 400C Tips and Shortcuts........................................ i
Quick Links................................................................................ i
Product Registration............................................................... iii
Caring for the Fishfinder 400C............................................... iii
Warnings.................................................................................. iv
Important Information............................................................. iv
Installing the Fishfinder 400C.............................................1
Step 1: Select a Location for the Fishfinder.......................... 1
Step 2: Mount the Fishfinder................................................... 2
Step 3: Install the Transducer................................................. 4
Step 4: Install the Wiring Harness........................................ 10
Step 5: Test the Installation................................................... 13
Basic Operation..................................................................15
Turning the Fishfinder 400C On or Off................................. 15
Adjusting the Backlight Setting............................................ 15
Using Simulator Mode........................................................... 15
Using the Fishfinder 400C Keypad....................................... 15
Understanding the Home Screen.......................................... 16
Understanding the Full Screen............................................. 17
Understanding the Split Zoom Screen................................. 17
Understanding the Flasher Screen....................................... 18
Understanding the Split Freq Screen................................... 18
ii
Understanding the Numbers Screen.................................... 19
Understanding the Temp Log Screen................................... 19
Understanding the Configure Screen................................... 20
Customizing the Fishfinder 400C......................................21
Setting Alarms........................................................................ 21
Changing the Display Settings............................................. 21
Changing the Sonar Settings................................................ 22
Changing the System Settings............................................. 23
Configuring Transducer Settings......................................... 23
Customizing Units of Measure.............................................. 24
Advanced Settings.............................................................25
Resetting the Odometer......................................................... 26
Setting the Temp Log Duration and Scale........................... 26
Appendix.............................................................................27
Specifications......................................................................... 27
Optional Accessories............................................................. 27
Alarms and Messages............................................................ 28
Limited Warranty.................................................................... 29
Declaration of Conformity (DoC).......................................... 30
Software License Agreement................................................ 30
Index....................................................................................31
Fishfinder 400C Owner’s Manual
Introduction
Product Registration
Caring for the Fishfinder 400C
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.
Cleaning the Case
Help us better support you by completing our online registration
today! Connect to our Web site at www.garmin.com/registration/.
Serial Number: ___ ___ ___ ___ ___ ___ ___ __
Contact Garmin
Contact Garmin if you have any questions while using your
Fishfinder 400C. In the USA contact Garmin Product Support
by phone: (913) 397-8200 or (800) 800-1020, Monday–Friday,
8 AM–5 PM Central Time; or go to www.garmin.com/support/, and
click Product Support.
In Europe, contact Garmin (Europe) Ltd. at +44 (0) 870.8501241
(outside the UK) or 0808 2380000 (within the UK).
Tell Us What You Think
Tell us how you like this manual! Fill out the Product
Documentation Survey. Go to www.garmin.com/contactUs/, and
click Product Documentation Survey.
Fishfinder 400C Owner’s Manual
The case is constructed of high-quality materials and does not
require user maintenance, except cleaning.
Clean the unit’s outer casing (except for the screen) using a cloth
dampened with a mild detergent solution and then wipe dry. Avoid
chemical cleaners and solvents that may damage plastic components.
Cleaning the Screen
The unit’s lens is coated with a special anti-reflective coating that
is sensitive to skin oils, waxes and abrasive cleaners. Cleaners
containing ammonia, alcohol, abrasives, or anti-grease detergents
will harm the anti-reflective coating. It is important to clean the lens
using an eyeglass lens cleaner (that is specified as safe for antireflective coatings) and a clean, lint-free cloth.
Water Immersion
The unit is waterproof to IEC Standard 60529 IPX7. It can
withstand immersion in 1 meter of water for 30 minutes. Prolonged
submersion can cause damage to the unit. After submersion, be
certain to wipe and air dry the unit before reuse.
iii
Introduction
Warnings
Failure to avoid the following potentially hazardous situations could result in an accident or collision resulting in death or serious injury.
•
When navigating, carefully compare information displayed on the unit to all available navigation sources, including information from visual
sightings, and maps. For safety, always resolve any discrepancies or questions before continuing navigation.
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 provided in accordance with California’s Proposition 65. See www.garmin.com/prop65 for more information.
Hg - lampS inside this product contain mercury and must be recycled or disposed of according to local,
state, or federal laws.
For more information go to:
www.garmin.com/aboutGarmin/environment/disposal.jsp.
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.
iv
Fishfinder 400C Owner’s Manual
Installing the Fishfinder 400C
Installing the Fishfinder 400C
To successfully operate your Fishfinder 400C, you must properly
install the fishfinder and all of its related parts. Compare the contents
of this package with the packing list on the box. If any pieces are
missing, contact your Garmin dealer immediately. Before you begin
the installation:
• Read and follow the instructions to install the unit.
• Gather the appropriate fasteners and tools.
• Verify that all cables can reach the unit mounting location and
the transducer.
• Wear safety goggles and a dust mask when drilling, cutting, or
sanding.
If you experience difficulty installing the unit, contact Garmin
Product Support or contact a professional installer.
To install and use your fishfinder:
1
2.
3.
4.
5.
Select a location for the fishfinder.
Mount the fishfinder.
Install the transducer.
Install the wiring harness.
Test the installation.
Fishfinder 400C Owner’s Manual
Step 1: Select a Location for the Fishfinder
Consider the following when you select an installation location:
• Provides optimal viewing as you operate your vessel.
• Allows easy access to the unit’s keypad.
• Is strong enough to support the weight of the fishfinder and
protect it from excessive vibration or shock.
• Allows room for the routing and connection of the power/data
and transducer cables. There should be at least a 3-inch (8 cm)
clearance behind the case.
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. This type of failure and related
consequences are NOT covered by the manufacturer’s limited
warranty.
Installing the Fishfinder 400C
Step 2: Mount the Fishfinder
You can mount your fishfinder in one of two ways:
• Surface Mount—mount the fishfinder onto a bracket
(included) that attaches to the console or overhead.
• Flush Mount—use the optional flush mount kit to mount
the fishfinder into a flat panel. See the “Appendix” for more
information.
Surface Mounting the Fishfinder
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
one of the following:
• Three #8 (4 mm) pan-head machine bolts with matching nuts
and washers and a 5/32" (5 mm) drill bit.
• Three #8 pan-head self-tapping screws and a 1/16" drill bit for
drilling starter holes.
Use a pan-head machine bolt or self-tapping screw to secure the
swivel base. If you use a screw with a countersunk head, you risk
damaging the mounting bracket.
OK
Fishfinder 400C Owner’s Manual
Installing the Fishfinder 400C
To mount the bracket assembly:
1. Using the swivel base as a template, mark the location of the
three holes that secure the bracket to the mounting surface.
2. Drill the mounting holes.
• If you secure the base with machine bolts, drill three
5/32" (5 mm) holes at the locations you marked.
OR
• 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
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.
3. Rotate the swivel mount bracket by twisting it left or right.
The bracket clicks as you turn it. Select a good viewing
angle, and then tighten all knobs.
4. Connect the power/data and transducer cables to the back
of the fishfinder, making sure the locking rings are fully
tightened on both connectors.
Installing the Fishfinder 400C
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. The cable cannot be spliced and connected to any
existing (Garmin or non-Garmin) transducer cables.
The following pages contain tips and basic installation instructions
for some popular transducers. Detailed installation instructions are
provided in the transducer kits. Some transducers might have to be
installed by a professional marine installer.
Assembling the Transducer
To �������������������������
assemble the transducer:
1. Insert the rubber washer and plastic spacer into the
transducer at the same time. DO NOT lubricate the rubber
washer.
2. Route the cable toward the back of the transducer. Slide the
transducer into the transducer mount.
3. Place a 5 mm flat washer on the 10-32 x 1.75" screw, and
insert the screw through the transducer mount, spacer, and
rubber washer.
4. Place the remaining 5 mm flat washer on the exposed end.
Install the 10-32 lock nut finger tight. You can tighten the
transducer further after installation on the boat.
Cable tie slot
Back of the transducer
Fishfinder 400C Owner’s Manual
Installing the Fishfinder 400C
Mounting the Transducer on a Trolling Motor
(Dual Beam Transducers Only)
To mount the transducer on a trolling motor:
1. Slide the large cable tie through the slot on the transducer
mount with the ridges of the band facing up until equal
lengths extend on both sides of the mount.
note: For cold water, or heavy timber or debris areas, a metal
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
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
Installing the Fishfinder 400C
Mounting the Transducer on a Transom
533*AYHAWK
!PPLYMARINESEALANTTOALL
SCREWTHREADSTOPREVENTWATER
FROMSEEPINGINTOTHETRANSOM
-OUNTTHETRANSDUCERCABLE
COVERWELLABOVETHE
WATERLINE
4RANSDUCERSHOULDEXTEND
BELOWFIBERGLASSHULLOR
BELOWALUMINUMHULL
/+
-OUNTTHETRANSDUCERPARALLELWITHTHEBOTTOM
-AKESURETHATTHETRANSDUCERISBELOW
WATERLEVELWHENTHEBOATISONPLANE
ATHIGHSPEED
$ONOTMOUNTTHETRANSDUCERDIRECTLYINTHE
PATHOFTHEPROP4HETRANSDUCERCANCAUSE
CAVITATIONTHATMAYDEGRADETHEBOATS
PERFORMANCEANDDAMAGETHEPROP
Fishfinder 400C Owner’s Manual
Installing the Fishfinder 400C
When selecting a transom mount location, consider the following for
optimal performance:
• For your sonar to operate properly, the transducer must be
located in calm water. DO NOT mount the transducer behind
strakes, rivet lines, struts, fittings, water intake, discharge
ports, eroding paint, or anything that creates turbulence.
• Mount the transducer as close to the center of the boat as
possible.
• DO NOT cut the transducer lead. (This voids your warranty.)
• DO NOT mount the transducer in locations where it might be
jarred when launching, hauling, trailering, or storing.
• DO NOT mount the transducer in the path of the prop on
single-drive boats. The transducer can cause cavitation that
can degrade the boat’s performance and damage the prop. On
twin-drive boats, mount the transducer between the drives, if
possible.
NOTE: DO NOT mount the transducer behind strakes, struts,
fittings, water intake or discharge ports, or anything that creates
air bubbles or causes the water to become turbulent. The
transducer must be in clean (non-turbulent) water for optimal
performance.
Fishfinder 400C Owner’s Manual
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.
To mount the transducer on a transom:
1. Position the transducer mount at the selected transom
location. Make sure the transducer is parallel with the water
line. Mark the center locations of each hole on the transducer
mount.
2. Using a 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 at 1" from
the point of the bit.
3. Apply marine sealant to the 5 x 30 mm screws. Attach the
transducer assembly to the transom using the 5 x 30 mm
screws. Adjust the transducer assembly 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 assembly to be aligned parallel with the water.
4. Tighten the 10-32 locking nut until it touches the mounting
bracket, and then tighten 1/4 turn more. (Do not overtighten.)
5. Place the first cable clamp on the transducer cable
approximately one third of the distance between the
transducer and the top of the transom.
Installing the Fishfinder 400C
6. 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 5
and 6 using the other cable clamp.
8. Route the transducer cable, as needed, to the fishfinder. DO
NOT CUT THE CABLE. Avoid routing the cable with electrical
wires or other sources of electrical interference.
Drill pilot holes here.
Vertical
Bottom of
To avoid drilling a hole to mount a thru-hull transducer, a
transducer can be secured with epoxy inside a boat (shoot-thruhull installation). This type of installation can provide better
noise reduction and allow you to use a higher Gain setting. For
a transducer to be mounted inside the hull (shoot-thru, not thruhull), the boat must be fiberglass, with no core. Contact your boat
manufacturer if you are unsure. Professional installation might be
necessary.
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.
Level
Align with the transom
bottom. The transducer
should extend 1/8"
below fiberglass hulls
or 3/8" below aluminum
hulls.
Shoot-Thru-Hull Installation
m
the transo
Keep it parallel with the water line.
OK
Fishfinder 400C Owner’s Manual
Installing the Fishfinder 400C
Selecting a Location for a Shoot-Thru-Hull Installation
When installing a transducer, the installation location must be the
following:
• Solid fiberglass, without any air bubbles, laminates, fillers, or
dead air space.
• In an area of clean (non-turbulent) water at all speeds.
• The location must not be over any strakes or behind any
obstruction on the hull that would create turbulence.
NOTE: Many modern hulls have a dedicated pocket for
shoot-thru-hull transducer installation. If you are unsure if your
hull is equipped with a pre-located pocket, contact your hull
manufacturer.
To test the location:
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
PVC pipe
or a can
Strip caulk or
RTV sealer
Weight the transducer
to hold it in place.
Fill a pipe or can with
water or a light mineral oil.
Hull surface
Testing the Location
To permanently install the transducer:
1. Lightly sand the surface of the hull and face of the transducer
with 400 grit wet or dry sandpaper.
2. Build a dam using strip caulk about 1/4" (6 mm) tall. Pour
about 1/8" (3 mm) of two-part, slow-cure epoxy into the dam.
3. Place the transducer in the epoxy, turning the transducer to
work out any air bubbles.
4. Weight the transducer in place, and allow it to cure for
24 hours.
Installing the Fishfinder 400C
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 11) indicates the appropriate
harness connections. The replacement fuse is a AGC/ 3AG - 3 Amp
fuse. If it is necessary to extend the power wires, use 22 AWG wire.
DO NOT cut the transducer cable, because this voids your warranty.
If your boat has an electrical system, you might be able to wire the
fishfinder directly to an unused holder on your current fuse block. If
you are using the boat’s fuse block, remove the in-line fuse holder
supplied with the fishfinder. You can also wire the fishfinder directly
to the battery.
Note: During a typical installation, use only the Red and Black
wires. The other wires do not have to be connected for normal
operation of the Fishfinder 400C unit. For information on connecting
to a NMEA or CANet compatible device, see page 12.
3-Amp
fuse
To 10-38 Volt boat supply
2A
Boat ground
+
Caution: The Fishfinder 400C maximum input voltage is 35
Volts DC. Do not exceed this voltage, because this can damage
the Fishfinder 400C and void the warranty.
1. Use a test light or voltmeter to determine the polarity of the
voltage source.
2. Connect the Red (+ or positive) wire to the positive voltage
terminal. (If you use the boat’s fuse block, route the positive
connection through the fuse, as shown on the diagram.)
3. Connect the Black (- or ground) wire to the negative voltage
terminal.
4. Install or check the 3-Amp fuse (on the boat’s fuse block or in
the in-line holder).
5. Align the notches on the cable plug and on the back of the
fishfinder. Insert the cable into the connector, and turn the
lock ring counter-clockwise until it stops.
-
To install the wiring harness:
—
+
To Fishfinder 400C
Fuse block
10
Fishfinder 400C Owner’s Manual
Installing the Fishfinder 400C
PIN 8 - Black (Ground)
PIN 13 - Red (DC Positive)
PIN 7 - Yellow (Alarm)
PIN 12 - White (CANet H)
PIN 16 - Green (CANet L)
PIN 18 - Blue (NMEA Out)
DC Power
Source
Fishfinder 400C Pin Assignment
CANet L
CANet H
Fishfinder 400C Wiring Harness
Fishfinder 400C Owner’s Manual11
Installing the Fishfinder 400C
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. Refer to the wiring diagrams on page 11 for connecting
the Fishfinder 400C to NMEA compatible devices.
To install the wiring harness to a GPS or other NMEA
device:
1. Follow the voltage source installation steps (see page 10).
For Garmin units, the ground (Black) wires serve as NMEA
ground and must be attached together or on the same
terminal. Refer to the wiring diagram of your GPS unit for
wire identification.
2. Connect the Blue (NMEA Out) wire from the Fishfinder 400C
to the NMEA In wire on the GPS/NMEA unit’s wiring harness.
3. Turn on the Fishfinder 400C NMEA Output setting (page 23).
For Garmin GPS units, set the communications interface to
NMEA/NMEA, NMEA In/NMEA Out, or NMEA.
Interfacing with NMEA
The Fishfinder 400C allows for NMEA 0183, Version 3.01 output
with a compatible GPS or navigation device. You must set NMEA
Output On to send data (page 23).
12
The SDDBT, SDDPT, SDMTW, SDVHW, SDWPL sentences are
sent in NMEA 0183, Version 3.01 output from the Fishfinder 400C.
You can purchase complete information about National Marine
Electronics Association (NMEA) format and sentences from:
NMEA
Seven Riggs Avenue
Severna Park, MD 21146 USA
www.nmea.org
Installing the Fishfinder 400C to a Garmin CANet
The Fishfinder 400C is a CANet-compatible sonar device.
Using the CANet (if applicable) optimizes the performance of
CANet-compatible units, allowing sonar information from the
Fishfinder 400C to be shared with up to two CANet compatible
Garmin GPS units. A standard NMEA connection only allows
depth, temperature, and speed information to be sent to a single GPS
device, whereas a CANet connection provides full sonar readings,
including Ultrascroll™, so you can view and control the same
information on your compatible GPS unit(s) as you can on your
Fishfinder 400C.
Note: To use the Garmin CANet with your Fishfinder 400C,
you must obtain a CANet Kit. Contact your Garmin dealer, or
visit www.garmin.com.
Fishfinder 400C Owner’s Manual
Installing the Fishfinder 400C
Step 5: Test the Installation
To turn on your Fishfinder 400C for the first time, press and hold the POWER key until the unit beeps and turns on. Use the ROCKER
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.
To configure your Fishfinder 400C for the first time:

Select a language.

Select a transducer
type.

Select units of
measure.

Select a color
scheme.
The Home screen appears after you select your configuration options. After 15 seconds of inactivity, the fishfinder automatically switches to
Full Screen.
Note: If the transducer is not detected, a “Transducer Disconnected, Sonar Turned Off” message appears.
Fishfinder 400C Owner’s Manual13
Installing the Fishfinder 400C
Because water is necessary to carry the sounder’s sonar signal, the
transducer must be in the water to work properly. You cannot get a
depth or distance reading when out of the water.
When you place your boat in the water check for leaks around
any screw holes that were added below the water line. DO NOT
leave your boat in the water for an extended period of time without
checking for leaks.
To test the transom mount transducer installation:
1. Begin testing the installation at a slow speed. If the sonar
appears to be working properly, gradually increase the
boat’s speed while observing the sonar’s operation. If the
sonar signal is suddenly lost or the bottom return is severely
degraded, note the speed at which this occurs.
2. Return the boat to the speed at which the signal was lost. Make
moderate turns in both directions, and see if the signal improves.
14
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 might take several adjustments to eliminate the
degradation.
4. If the signal does not improve, you might have to move the
transducer to a different location.
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

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