Raymarine Fish Finder L470 User Guide
FishFinder L470  
Instruction Manual  
Raymarine  
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Lamp/Contrast Menu 29  
Operating Pages 30  
FishFinder Page 32  
Choosing a Frequency 37  
Fish Indications 38  
Bottom Indications 39  
Window Page 41  
Sidelooker Page 43  
Digital Page 47  
Performance Modes 50  
Zoom Mode 50  
A-Scope (Bottom Coverage) Mode 52  
Bottom Lock Mode 54  
4
Setup Instructions 56  
The Setup Menu 56  
Range Setting 57  
Sensitivity Setting 58  
Chart Speed Setting 60  
Frequency Setting 61  
Resetting the Log 63  
System Setup Menu 64  
Deep Alarm 68  
Fish Alarm 68  
Simulator 65  
Language 65  
Buzzer 69  
Fish Symbols 65  
White Line 65  
VRM 66  
Sidelooker 66  
Speed Cal 66  
Depth Units 70  
Speed Units 70  
Temp Units 70  
Speed 70  
Log 70  
Temp Cal 67  
Temp 70  
Depth Digits 67  
Shallow Alarm 67  
Setup Menus for Zoom Mode 71  
Zoom Select Menu 71  
Zoom Screen Split/Full Menu Item 72  
Setup Menus for Bottom Lock Mode 73  
Bottom Lock Range Menu Item 73  
Bottom Lock Split/Full Menu Item 74  
Setup Menu for Window Page 75  
Resetting from the Digital Page 76  
v
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Setup Instructions for Sidelooker 76  
Sidelooker Range Menu Item 77  
Sidelooker Sensitivity Menu Item 78  
Sidelooker Chart Speed Menu Item 78  
Sidelooker View Menu item 79  
Combining Displays 80  
Resetting the Unit to Factory Defaults 81  
Default Settings 82  
5
6
Maintenance andTroubleshooting 83  
Cleaning Instructions 83  
Troubleshooting Suggestions 83  
Servicing a Thru-Hull Transducer 87  
How to Contact Raymarine 87  
Specifications 91  
General Information 91  
FishFinder Functions 92  
Connector Diagrams 93  
Glossary of Terms 94  
vi  
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List of Figures  
Figure  
Page  
Unit in Use  
Front Panel  
Inside front cover  
i
1
5
6
7
7
8
8
10  
1-1  
2-1  
2-2  
2-3  
2-4  
2-5  
2-6  
2-7  
2-8  
Typical Installation  
Transducer Types  
Assembling the Transducer Bracket  
Transducer Mounted on Transom  
Transducer Bracket, Side View  
Correct Mounting Position  
Mounting the Transducer  
Installing the Sidelooker Transducer  
Installing the Sidelooker Transducer  
on aTrolling Motor  
13  
15  
16  
17  
18  
19  
20  
21  
2-9  
Suppression Ferrites  
2-10 Installation on Bracket  
2-11 Dimensions  
2-12 Flush-Mount Installation  
2-13 Disassembling from Bracket  
2-14 Installing Cable on Transom  
2-15 Cable for Sidelooker Transducer  
2-16 Cable for Speed and Temperature Sensor  
2-17 DC Power Connections  
22  
23  
26  
29  
31  
32  
38  
40  
41  
42  
43  
44  
47  
49  
50  
52  
54  
56  
57  
58  
60  
61  
3-1  
3-2  
3-3  
3-4  
3-5  
3-6  
3-7  
3-8  
3-9  
Display Panel  
Lamp/Contrast Menu  
Operating Pages  
FishFinder Page  
Fish Indications  
Bottom Conditions  
Window Page  
Options for Window Page  
Sidelooker Feature  
3-10 Sidelooker Page  
3-11 Digital Page  
3-12 Performance Modes  
3-13 Zoom Mode  
3-14 A-Scope Mode  
3-15 Bottom Lock Mode  
4-1  
4-2  
4-3  
4-4  
4-5  
Setup Menus  
Range Menu Item  
Sensitivity Menu Item  
Changing the Chart Speed Setting  
Chart Speed Menu Item  
vii  
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4-6  
4-7  
4-8  
4-9  
Frequency Menu Item  
Log Reset Menu Item  
Reaching the System Setup Menu  
System Setup Menu  
61  
63  
64  
64  
71  
72  
73  
74  
75  
77  
78  
78  
79  
80  
4-10 Zoom Select Menu Item  
4-11 Zoom Screen Split/Full Menu Item  
4-12 Bottom Lock Range Menu Item  
4-13 Bottom Lock Split/Full Menu Item  
4-14 Digital Setup Menu Item  
4-15 Sidelooker Range Menu item  
4-16 Sidelooker Sensitivity Menu Item  
4-17 Sidelooker Chart Speed Menu Item  
4-18 Sidelooker View Menu Item  
4-19 Split FishFinder Page with A-Scope Mode  
4-20 Window Page with Option G Selected  
and Zoom Enabled  
81  
89  
93  
5-1  
6-1  
Sample Mailing Label  
Connector Diagrams  
viii  
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1 – Introduction  
About the FishFinder L470  
The FishFinder L470 is a system that uses sound waves (“sonar”) to  
detect fish and show the bottom of a lake or sea. The system includes a  
transducer and a display unit, connected by a cable. The transducer  
sends high-frequency sound waves down into the water. These sounds  
strike fish, the bottom, or other objects in the water, and return as echoes.  
The FishFinder then interprets these echoes and presents a display.  
The FishFinder L470 can handle many different jobs:  
•
•
•
•
•
•
•
•
detect the presence of fish below the boat  
trigger an alarm when fish are found  
measure the depth of the water  
set alarms for minimum and maximum depth  
show the shape of the bottom  
determine whether the seabed is hard or soft  
measure the speed of the boat and the distance traveled  
show the water temperature  
We are sure you will find the FishFinder L470 to be one of the most useful  
devices on your boat.  
Raym arine  
PWR  
FishFinder L470  
Display Unit  
SETUP  
ZOOM  
CLEAR  
A-SCP  
BOT  
LOCK  
L470  
Optional Thru Hull  
Transducer  
Transducer mounted  
in quick release  
transom bracket  
Fig. 1-1  
Typical Installation  
Introduction  
1
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System Components  
The FishFinder L470 consists of a compact display unit connected to  
a transducer. The transducer is attached to the boat and extends into  
the water.  
Standard Equipment  
When you unpack your FishFinder L470, you should find the following  
standard equipment in the carton. If any items are missing, please notify  
your Raymarine dealer immediately, or contact the Customer Service  
Department at Raymarine at 1-800-539-5539, ext. 2333. Please provide  
the serial number of the FishFinder when reporting any missing items.  
Description  
Part No.  
FishFinder L470 display unit  
E61013  
Quick-release swivel-mount bracket  
(with mounting hardware)  
G623996-1  
M99-146  
G627172-3  
—
DC power cable  
Instruction manual  
Four #10 x 3/4” ss mounting screws  
Standard Transducers  
Depending on which model of the L470 you have purchased, the box will  
include one of the transducers listed below:  
Description  
Part No.  
Transom-mount transducer (with speed  
and temperature sensors, including  
mounting bracket and hardware)  
M78898  
M78923  
Bronze thru-hull transducer (with  
speed and temperature sensors)  
Optional Accessories  
Optional accessories and parts can be purchased directly from  
Raymarine. For prices and ordering information, please call the Parts  
Department at (800) 539-5539 ext. 2333.  
Introduction  
2
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Description  
Part No.  
Sidelooker transom-mount transducer  
M78930  
Sidelooker transducer for trolling motor  
mounting. Companion with M78928  
downlooker depth/temp transducer,  
with 12 ft. (3.6 m) cable and hardware  
M78929  
M99-140  
M99-139  
Extension cable, 5 pin (15 ft., 4.5 m)  
Extension cable, 9 pin (15 ft., 4.5 m)  
Flush-mounting kit (with hardware and  
mounting template)  
M99-138  
M99-142  
M78922  
M78921  
Fairing block for M78923 thru-hull  
transducer (Lexan®)  
Low profile plastic thru-hull transducer  
(Valox® plastic, sensor for depth only)  
Bronze thru-hull transducer  
(sensor for depth only)  
In-hull/trolling motor transducer (for installation in  
fiberglass hull only, or mounting on trolling motor,  
including hardware for either installation  
and 20’ or 6m cable)  
M78928  
M78946  
M78937  
M78936  
Angled in-hull transducer (for installation  
in fiberglass hull only, where deadrise  
angle is 10° to 22°)  
Plastic thru-hull transducer (Valox® plastic, with  
speed and temperature sensors, used with depth-  
only transducers M78922, M78928, M78946)  
Transom-mount speed and temperature  
sensor (used with depth-only transducers  
M78922, M78928, M78946)  
Replacement transom transducer  
mounting bracket kit  
M99-148  
M99-136  
M99-143  
D234  
Transducer switch box (select between two L470  
FishFinder displays, using one transducer)  
Replacement paddle wheel kit (for transom-  
mount transducer)  
Replacement paddle wheel kit  
(for thru-hull transducer)  
Replacement paddle wheel kit  
(for bronze thru-hull transducer)  
D144  
Introduction  
3
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2 – Installation  
The installation process has four parts:  
•
•
•
•
Mounting the transducer  
Mounting the display unit  
Connecting the cables for the transducer and power supply  
Calibrating the display unit  
About the Transducer  
Several different kinds of transducers can be used with this unit. The transom-  
mount style, used most often, and in-hull types are shown in Fig. 2-1.  
Besides measuring depth, the transducers have two other sensors: a  
paddle wheel which detects the speed of the boat, and a sensor for the  
water temperature. An optional transducer, the Sidelooker, detects  
objects by looking out to the sides of the boat.  
Since the transducer is very important to the operation of the FishFinder,  
it is vital that the transducer be mounted correctly. The transducer will  
give the most reliable readings if it looks into water which is smooth and  
undisturbed. If you place the transducer so bubbles or turbulence flow  
across the face of the unit, the system may give inaccurate readings.  
There are three important rules when mounting any type of transducer:  
•
•
The transducer should be continuously covered by water when the  
boat is moving. (If the transducer is mounted near the side of the  
boat, it may be exposed when the boat is turning.)  
The transducer should be placed where turbulence or bubbles will not  
pass directly over the face of the unit. Don’t place the transducer  
behind any running strakes, intakes, or thru-hull fittings which create  
turbulence.  
•
The transducer should be mounted where it will not be affected by the  
wash from the propeller(s).  
Installation  
4
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M78898  
Transom-mount  
transducer  
M78923  
Thru-hull  
transducer  
M99-142  
Fairing for  
thru-hull transducer  
M78946  
In-hull  
transducer  
M78930  
Sidelooker  
transducer for  
transom mount  
M78929  
Sidelooker  
transducer for  
trolling motor  
Fig. 2-1  
Transducer  
Types  
Selecting the Correct Type of Transducer  
Before you begin the installation, double-check to be sure you have the  
correct type of transducer. Each kind of transducer is designed for a  
particular type of use. In this manual we will include detailed mounting  
instructions for the transom-mount transducer. We will also include some  
general information on the other types. For detailed information on these  
other transducers, see the instructions which are packaged with the unit.  
Use a transom-mount transducer if –  
. . . your boat has an outboard or inboard-outboard engine(s), and if you’re  
planning to use the Sidelooker option. This type of transducer must be  
mounted ahead of or beside the propeller(s). Do not use this type of  
transducer for a boat with a straight-shaft inboard engine.  
Use a thru-hull transducer if –  
. . . your boat has a straight-shaft inboard engine. This type of transducer  
is installed in a hole drilled through the hull.  
Use an in-hull transducer if –  
. . . you have a high-speed boat or if, for some reason, you cannot use a  
transom-mount or thru-hull transducer. The hull may be no more than 1" thick.  
Installation  
5
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Use a trolling motor transducer if –  
. . . you want to attach the transducer to a trolling motor. (Not recom-  
mended for deep water operations.)  
Use a Sidelooker transducer –  
. . . for searching for fish or structure on either side of the boat. This type  
of transducer is attached to the bracket of the transom-mount transducer,  
or to the shaft of the trolling motor.  
Assembling the Transducer Bracket  
Fit together the two parts of the transducer bracket as shown in Fig. 2-2.  
When the installation is complete, the parts snap together as shown.  
LIKE THIS!  
Attach the  
two parts  
NOT THIS!  
Bracket is installed  
upside down  
Fig. 2-2  
Assembling  
the Transducer  
Bracket  
Lower the transducer  
and snap in the  
release clip  
Positioning the Transom-Mount Transducer  
Begin by finding the best location for the mounting bracket. Here are the rules:  
•
If your boat has one propeller (outboard or inboard-outboard), mount  
the transducer about 18" (455 mm) to the side of the centerline of the  
boat. See Fig. 2-3. Choose the side that is on the downstroke of the  
propeller. (This is usually the starboard side of the boat.) This will  
reduce interference caused by air bubbles.  
•
If the propeller can be turned to steer the boat, allow at least 2" (50 mm)  
beyond the swing radius of the propeller. This will prevent the propeller  
from damaging the transducer when it is turned. After installation, check  
the clearance by turning the wheel so the propeller swings toward the  
transducer. There should always be a 2" (50 mm) clearance.  
Installation  
6
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Fig. 2-3  
Transducer  
Mounted on  
Transom  
Allow a clearance  
of at least 10  
Transducer in  
released position  
inches (254 mm)  
10"  
(254 mm)  
Fig. 2-4  
Transducer  
Bracket,  
Side View  
•
•
If your boat has twin propellers (outboard or inboard-outboard), place  
the transducer near the centerline of the boat.  
Do not mount the transducer behind any hull fittings, intakes, or  
other parts which extend from the hull. These may cause turbulence  
or air bubbles.  
•
The bracket has a quick-release mechanism. This may reduce dam-  
age by allowing the transducer to flip up if it hits any debris or the  
bottom. See Fig. 2-4. Allow enough clearance above the transducer so  
that it can swing upward completely. This is about 10" (254 mm)  
Installation  
7
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Average transom angle–  
Vertical transom –  
Sloping transom–  
no wedge necessary  
place wedge this way  
place wedge this way  
2
to 5  
2
to 5  
2
to 5  
For fiberglass hull – 1/8" to 1/4" (3.2 to 6 mm)  
For aluminum hull – 1/4" to 3/8" (6 to 9 mm)  
No!  
No!  
No!  
The bow of the transducer  
is above the bottom of the  
transom, creating  
Rivets on the hull are  
creating bubbles.  
Lower the transducer  
a bit.  
The rear of the transducer  
is too high, creating  
cavitation.  
cavitation.  
Fig. 2-5  
Correct Mounting  
Position  
1
2
3
Insert screws 1 and 3  
1/4" from the bottom of  
slots, and screw 2  
1/4" from the top of the  
slot to allow room for  
adjustment.  
Correct  
alignment  
If screws are inserted  
this way, it won’t be  
possible to make the  
height adjustment.  
Fig. 2-6  
Mounting  
the Transducer  
Incorrect  
alignment  
Installation  
8
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measured from the bottom of the transom.  
•
•
If considering the Sidelooker option, look for a mounting location  
where the Sidelooker array will not be blocked by the engine housing  
or other mounted hardware.  
If the boat will be carried on a trailer, be sure the transducer will not  
hit any rollers, bunks or fittings on the trailer.  
Mounting the Transom-Mount Transducer  
1. On a boat with a fiberglass hull, the leading edge of the transducer  
should extend 1/8" (3.2 mm) to 1/4" (6 mm) below the bottom edge of  
the hull. See Fig. 2-5. On an aluminum hull, the transducer should  
extend a bit more – 1/4" (6 mm) to 3/8" (9 mm). If the boat will be  
operated at high speeds, the transducer may be mounted closer to  
the centerline of the hull.  
2. The lower surface of the transducer should tilt down toward the rear  
at a slight angle (2° to 5°). The mounting bracket includes a wedge.  
Depending on the angle of the transom on your boat, you may need  
this wedge to get the correct angle for the bottom of the transducer.  
3. Looking at the rear of the boat, be sure the bracket is vertical  
(perpendicular to the water line).  
4. Hold the bracket (and the wedge, if used) against the transom and  
trace the positions of the screw slots.  
5. Remove the bracket. See Fig. 2-6. The screws in the outer slots  
should be placed about 1/4" (6 mm) up from the bottom of each slot.  
The screw in the center slot should be placed 1/4” (6 mm) down from  
the top. (This will allow you to adjust the bracket up or down a bit.)  
Drill pilot holes 3/4" (19.1 mm) deep. Use a 9/64" (3.6 mm) drill bit.  
To prevent drilling too deeply, wrap masking tape around the drill bit  
about 7/8" (22 mm) from the tip. Drill in only as far as the tape  
marker.  
If you are attaching the bracket to a fiberglass hull, you can minimize  
any surface cracking of the gel coat. Before drilling each pilot hole,  
drill a shallow hole (chamfer) at each location about 1/16" (1.5 mm)  
deep. Use a 1/4" (6 mm) drill bit.  
6. Attach the bracket to the hull using the panhead screws with flat  
washers. Before you tighten the screws, apply a good-quality marine  
sealant to the pilot holes. This will protect the hull from water penetra-  
tion. Do not tighten the screws completely yet.  
Installation  
9
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7. Move the bracket up or down so that the leading edge of the trans-  
ducer has the clearance shown in Fig. 2-5.  
8. Once the bracket is in the correct position, you can tighten the screws.  
Mounting the Optional Sidelooker Transducer -  
Transom-Mount Installation  
1. The Sidelooker transducer allows the display unit to check the water  
to either side of the boat. This is helpful when you are looking for fish  
or structure near banks, or under docks or piers.  
2. The M78930 Sidelooker transducer is attached to the same mounting  
bracket used with the transom-mount transducer. See Fig. 2-7. Begin  
by installing the transom-mount bracket as described earlier.  
Fig. 2-7  
Installing the  
Sidelooker  
Transducer  
3. Remove the two screws and the bracket covering the paddle wheels.  
4. Attach the Sidelooker transducer to the top of the transom mounting  
bracket. Use the four panhead screws supplied. The fit should be  
snug, but do not overtighten the screws.  
5. Run the Sidelooker cable beside the depth cable for the transom-  
mount transducer.  
Installation  
10  
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Installation Notes – Thru-Hull Transducer  
Detailed instructions for this installation will be included with the trans-  
ducer. In this section, we will note just a few important points.  
1. Earlier we listed three general rules for placing transducers. All of  
these rules apply when you are mounting a thru-hull transducer.  
Here are some other rules for selecting the best mounting location:  
For planing hulls – Install in the flat planing area near the stern.  
Always install forward of the propeller(s) and shaft(s).  
For small displacement hulls – Install near the centerline of the hull  
and 1/3 of the way forward from the stern. Always install forward of  
the propeller(s) and shaft(s).  
For large displacement hulls – Install near the centerline of the hull  
and 1/3 of the way aft from the bow. Always install forward of the  
propeller(s) and shaft(s).  
For sailboats – Install forward of the leading edge of the keel, to one  
side and near the centerline of the hull.  
2. Choose a location where you can easily reach the transducer from  
inside the boat. This will allow you to service the unit. Allow at least  
6" (152 mm) of headroom above the transducer.  
3. When choosing a mounting location, drill a small pilot hole (1/8" or 3.2  
mm) from the inside of the hull. Before you drill the hole, be sure you  
will be able to reach the large nut on the top of the unit, and that there  
will be enough clearance for the cable. If there is a strake or other  
feature on the hull, drill from the outside of the hull instead. (This  
small hole can be filled easily if the mounting location is not suitable.)  
4. The position of the transducer is especially critical on high speed  
boats (capable of more than 20 knots). Check the locations of the  
transducers on similar boats before installing the transducer in your  
own boat. Choose the location which will offer the best performance.  
5. If the bottom of the hull at the mounting location is flat, you can mount  
the transducer directly through the hull. If the hull rises at an angle  
(the “deadrise angle”) of more than 10°, you must include a mounting  
block or “fairing.” The transducer must be mounted in a vertical  
position. Attach the fairing block to the hull as firmly as possible. This  
fairing block must be able to resist the drag of the water against the  
hull, and must also be completely waterproof.  
Installation  
11  
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6. If the hull of the boat has a core-type hull, you will need to follow  
some special mounting procedures. The core material must be  
protected from any water which may leak from the inside of the boat.  
(If the core material is allowed to remain wet, it may rot and weaken  
the hull.)  
7. When working with the transducer, support it by holding the body of  
the unit or the rings. Do not hang the transducer from the cable.  
8. It is very important to seal the opening around the transducer using a  
high-quality marine sealant suitable for underwater use. After  
installation, do not leave your boat in the water for any amount of time  
without checking for leaks.  
Installation Notes – In-Hull Transducer  
Detailed instructions for this installation will be included with the trans-  
ducer. In this section, we will note just a few important points.  
1. Choose the best mounting location:  
For outboard powerboats – Install as far aft as possible  
For inboard/outboard powerboats – Install close to the engine(s)  
For inboard powerboats – Install forward of the propeller(s) and  
shaft(s)  
For sailboats – Install near the centerline of the hull and forward of  
the leading edge of the keel  
2. An in-hull transducer may only be installed in a fiberglass hull which  
is no more than 1" (25 mm) thick. The in-hull transducer may not be  
installed in wood or aluminum hulls.  
3. Use the standard in-hull transducer if it will be installed in a flat part  
of the hull, or a section with no more than 10° of deadrise. Use the  
angled in-hull transducer if the mounting location has up to a 22° of  
deadrise.  
4. Do not try to compensate for the angle of the hull by fairing the epoxy  
adhesive on the face of the transducer.  
5. Use the epoxy supplied with the in-hull transducer, or an equivalent  
epoxy glue. Do not use any other type of adhesive, including silicone  
or RTV adhesive.  
Installation  
12  
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Installation Notes – Trolling Motor Transducers  
Both Downlooker and Sidelooker transducers may be installed on a  
trolling motor. See Fig. 2-8.  
Fig. 2-8  
Installing the  
Sidelooker  
Transducer on a  
Trolling Motor  
Detailed instructions for these installations will be included with the  
transducer(s). The Downlooker transducer is mounted on the horizontal  
gear case of the motor. The Sidelooker transducer is attached to the  
vertical support tube. These installations are simple, but it is important to  
keep these points in mind:  
1. Keep the Sidelooker transducer fully submerged. The transducer will  
only produce an image if it is immersed in water.  
2. Keep the Sidelooker transducer clear of weeds or debris.  
3. When the position of the trolling motor is changed, the field of view of  
the Sidelooker also changes. The Sidelooker can be aimed at  
interesting echoes, but can also be positioned so that it is looking  
back at the hull. Be aware of the position of the Sidelooker trans-  
ducer.  
Installation  
13  
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Installation Notes – Transducer for Speed and  
Temperature Only  
This type of transducer may be used with a thru-hull transducer which  
reads depth only. The speed/temperature transducer is attached to the  
transom of the boat. Detailed instructions for this installation will be  
included with the transducer. The cable for this transducer uses a “Y”  
connector. See the notes on “Installing the Transducer Cable.”  
EMC Installation Guidelines  
When different types of marine electronic equipment are mounted closely  
together in a tight space, they may interfere with each other. The design  
and manufacture of this unit follow industry standards for “Electromagnetic  
Compatibility” (EMC). However, it is important to install the unit correctly to  
ensure the best possible performance. Below is a list of some of the  
factors which could affect the operation of the product. Some of these  
factors may affect the way you install the FishFinder and the wiring  
cables.  
•
Place the display unit and the power and signal cables at least 3 ft.  
(1m) from any equipment transmitting radio signals, or any cables  
carrying radio signals. This includes VHF radios, cables and anten-  
nas. In the case of SSB radios, the distance should be increased to 7  
ft. (2m).  
•
•
Allow a space of at least 7 ft. (2m) from the path of a radar beam.  
Normally, a radar beam will spread about 20° above and below the  
radiating element.  
The power for the display unit should be supplied from a different  
battery than the one used to start the engine. If the voltage to the  
FishFinder unit drops below +10.8 V DC, this could cause the unit to  
reset. This will not damage the equipment, but it may cause the loss  
of some information, and it can change the operating mode.  
Avoid running the FishFinder power wires near the power wiring for any  
radar, radio, or Loran-C units. If possible, wire the FishFinder power wires  
to a separate circuit breaker.  
•
If the transducer cable runs near another electrical wire, it may pick  
up electrical interference or “noise.” To reduce this, try to keep the  
Installation  
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transducer cable separated as far as possible from all other wires.  
This is especially important with wiring for the boat’s ignition, alterna-  
tor, or tachometer. It is also helpful to keep the transducer cable away  
from the FishFinder power cable. If it is necessary to run the trans-  
ducer cable across any wires, make the crossing at a right angle.  
Use only genuine Raymarine cables. During the installation, do not  
cut the transducer cable or remove the connector. Do not try to  
shorten or splice the cable. The transducer cable includes several  
wires, along with shielding and insulation. If the cable is cut, it cannot  
be repaired. (Cutting the cable will also void the warranty.) During  
installation, if you need to drill any holes for the cable, they must be  
large enough to accept the connector. This will allow you to make the  
installation without cutting the wire.  
•
•
A “suppression ferrite” may be attached to one of the cables. See Fig.  
2-9. If you must remove the ferrite during installation, be sure to  
reassemble it in the same position.  
Fig. 2-9  
Suppression  
Ferrites  
Installation  
15  
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Raymarine  
To release the  
display from  
the base,  
PWR  
press on the  
right and left  
sides until you  
hear the clicks.  
Slide the  
SETUP  
CLEAR  
display out  
ZOOM  
of the bracket.  
A-SCP  
BOT  
LOCK  
The angle of  
the display  
can be changed.  
FIS  
H
FIN  
D
R
L
470 E  
The display can  
be turned from  
side to side.  
Fig. 2-10  
Installation  
on Bracket  
Mounting the Display Unit – Standard Mount  
You may mount the display unit on any flat surface using the bracket  
supplied. See Fig. 2-10. (There is also an optional kit which allows you to  
flush-mount the display in a flat panel or dashboard). Follow these  
instructions if you are using the standard mounting bracket:  
1. The “LCD” type display used on this unit is easier to see from certain  
angles. Before selecting a permanent mounting location, make  
temporary power connections and turn on the unit. This will allow you  
to test the visibility of the display from several different angles.  
2. Remove the display unit from the bracket by pressing on the large  
button in the center of the bracket. See Fig. 2-10.  
3. Mount the base of the bracket using the supplied screws.  
4. Slide the display unit back into the bracket.  
5. Adjust the display unit for the best viewing angle. You can turn the  
display from side to side, and tilt it up or down.  
Dismounting the Display Unit  
See Fig. 2-10. To release the display from the bracket, press and hold  
down the left and right sides. You will hear an audible “click,” and the  
bracket will slide out.  
Installation  
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2-25/32"  
(70 mm)  
Hole 3/16" (5 mm)  
2-21/32"  
(67 mm)  
2-27/32"  
(72 mm)  
1-3/4"  
(45 mm)  
6-5/8" (169 mm)  
1-15/32"  
(37 mm)  
8-1/4"  
(210 mm)  
5-13/16"  
(147 mm)  
1-3/4"  
(44 mm)  
4-9/32"  
(109 mm)  
3-29/32"(99 mm)  
4-7/32"(107 mm)  
Fig. 2-11  
Dimensions  
Installation  
17  
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Mounting the Display Unit – Flush Mount  
In order to do this installation, you will need the optional flush mounting kit  
(part no. M99-138). See Fig. 2-12.  
1. Select a mounting location on the dashboard or control panel.  
Choose a clear, flat area at least 7" x 7" (180 mm x 180 mm). Be  
sure you will also have at least 6" (152 mm) of clearance behind the  
area where the display unit will be mounted. It is a good idea to drill  
a small pilot hole in the center of the mounting area. Be sure there  
are no hidden electrical wires or other items behind the point where  
you plan to mount the display unit.  
2. A mounting template is supplied with the flush mounting kit. Tape this  
over the selected location on the panel and trace around the edges.  
3. Make the cutout for the display. Drill a series of 1/2" (13 mm) holes at  
the points shown around the edges of the cutout area.  
4. Drill the two small holes for the threaded studs as shown on the  
mounting template. Use a 7/32" (5.5 mm) drill bit.  
5. Remove the template and draw straight lines between the 1/2" holes.  
Cut along each of the lines with a small saw.  
Fig. 2-12  
Flush-mount  
Installation  
Installation  
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6. Separate the display unit from the mounting bracket. (See Fig. 2-13.)  
Press the large button in the center of the bracket to separate the  
bracket arms. The display unit is attached to the arms by two screws.  
Each screw is covered by a cap. Locate the small slot beside each  
cap and pry upward using a small screwdriver. Remove the caps,  
then the two screws and the two wave washers. Save these parts in  
case you ever want to use the mounting bracket.  
Raymarine  
PWR  
SETUP  
CLEAR  
ZOOM  
A-SCP  
BOT  
LOCK  
FISHFINDER  
L470  
To pry up the cap,  
insert a small screw-  
driver here.  
Fig. 2-13  
Disassembling  
from Bracket  
7. Screw the threaded studs into the holes on the rear of the display unit.  
8. Set the display unit into place to be sure that it will fit correctly.  
Thread the wing-nuts onto the threaded studs to hold the display  
unit in place temporarily.  
9. Once the DC wiring is complete, finish the installation. Hold the  
gasket in place around the opening. Fit the display into the cutout  
again. From the rear, screw the thumbscrews securely onto the  
threaded studs to hold the unit in place.  
Installing the Transducer Cable  
A 20 foot length of cable, with the connector attached, is supplied with the  
Downlooker transducer.  
Installation  
19  
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Cable feed-thru  
cap  
Cable clamp  
1" (25 mm)  
Fig. 2-14  
Installing Cable  
on Transom  
Hull projections  
Fiberglass: 1/4" (6mm)  
Aluminum: 1/2" (13 mm)  
1. Route the cable up and over the top edge of the transom. See Fig. 2-14.  
Secure the cable using cable clamps. (These clamps are available  
from your local marine equipment supplier.)  
If you do not want to expose the cable on the deck, you may drill a  
new hole (3/4" or 19 mm) through the transom for the cable. (Re-  
member–this hole must be large enough to accept the cable with the  
connector attached. Do not cut the cable!) To seal the opening, use  
a feed-thru cap where the cable passes through the transom.  
2. Run the cable through the interior of the boat. If the transducer cable  
runs near another electrical wire, it may pick up electrical interference  
or “noise.” To reduce this, try to keep the transducer cable separated  
as far as possible from all other wires. This is especially important  
with wiring for the boat’s ignition, alternator, or tachometer. Also try to  
keep the transducer cable away from the antenna and power cables  
for VHF or FM radios. It is also helpful to keep the transducer cable  
away from the FishFinder power cable. If it is necessary to run the  
transducer cable across any wires, make the crossing at a right  
angle.  
3. Be careful not to tear the cable jacket when passing it through bulk-  
heads and other parts of your boat. Secure the cables in place using  
tywraps or lacing twine. Coil the extra cable and tie it out of the way.  
4. If the 20 foot transducer cable is not long enough, a 15 foot extension  
cable (5M) is available from your Raymarine dealer (part no. M99-140).  
Installation  
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When you attach the extension cable, be sure that the connections  
are tight and watertight. Use Dow Corning DC-4 or an equivalent  
sealing compound to protect the connector assemblies.  
5. At the rear of the display unit, plug in the transducer cable using the  
keyed connector.  
Installing the Transducer Cable – Sidelooker Option  
1. If the installation includes the optional Sidelooker transducer, there  
will be two transducer cables. See Fig. 2-15. The cable from the  
Sidelooker includes a “Y” connector, and is 12’ long (3.6 m).  
2. Plug the cable from the depth transducer into the open end of the “Y”  
connector.  
Sidelooker  
transducer  
Fig. 2-15  
Cable for  
Sidelooker  
Transducer  
Depth  
transducer  
Installing the Transducer Cable –  
Installation with Separate Speed and Temperature Sensors  
1. Optional depth-only and speed- and temperature-only transducers are  
available for the FishFinder L470. In this optional configuration the  
separate transducers are connected via a “Y” type receptacle cable  
located on the optional speed- and temperature-only transducer cable.  
Installation  
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2. Plug the cable from the depth-only transducer into the receptacle  
connector on the optional speed- and temperature-only transducer.  
The speed- and temperature-only transducer then connects at the  
transducer receptacle of the FishFinder L470. This is shown below in  
Fig. 2-16.  
Sensor for  
depth only  
Sensor for  
speed and  
temperature  
Fig. 2-16  
Cable for Speed  
and Temperature  
Sensor  
Making the DC Power Connections  
1. The display unit is designed for use on boats with 12V DC power  
systems. (The unit can operate as long as the DC voltage is between  
10.8 and 16V DC.) The display unit can be wired to a negative-  
ground system, or both the negative and positive supply lines may be  
“floating” above ground. This unit is not intended for use on boats  
with positive ground.  
2. The 6-foot power cable supplied with the display unit should reach  
the source of DC power. On a small boat, connect the power leads  
directly to the main battery isolation switch or breaker. On a larger  
boat, route the power leads to the DC power distribution panel.  
3. It is very important that you connect the power leads correctly. See  
Fig. 2-17. At the power source, connect the red wire to the positive  
Installation  
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DC 12V  
connector  
to battery  
T/D  
connector  
to transducer  
RED  
BLACK  
DC 12V  
Fig. 2-17  
DC Power  
Connections  
RF ground  
terminal (+), and the black wire to the negative terminal (-). The  
negative terminal may also be called “ground” or “earth.” (The display  
unit is internally protected if you accidentally reverse the polarity of  
the power wires.)  
4. Attach the red or positive wire to a 5 amp circuit breaker. If the unit is  
connected directly to the boat’s battery, include a 2 amp in-line fuse.  
(In-line fuses are available at most marine supply stores.)  
5. The power cable includes a smaller “shield” wire. Connect this to a  
good ground.  
6. If you need to extend the power wiring by more than 10 feet, use a  
larger wire size. This will allow the wires to deliver the correct voltage  
in spite of the longer wire distance. For runs of 20 to 35 feet, use #14  
AWG.  
If you extend the power wiring, be sure all electrical connections are  
solid and durable. Soldering is the best way to make these connec-  
tions. Insulate all connections using heat-shrink tubing or electrical  
tape. You may also use crimp connectors or a terminal strip, but be  
sure to use good-quality marine-grade parts.  
7. At the rear of the display unit, plug in the power cable using the keyed  
connector.  
Installation  
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Note –  
Press firmly when inserting the power cable and transducer cable to  
ensure a tight seal.  
PWR  
8. When you press the  
button, the display unit should turn on. If  
the unit will not turn on and you suspect that you may have reversed the  
power connections, check the DC power lines all the way back to the  
battery. If the polarity is not correct, reconnect the leads properly and  
try again.  
Calibrating the Sensors  
The transducer most often used with this unit includes sensors for boat  
speed and water temperature. These sensors are normally very accurate,  
but you may want to calibrate them. The procedure appears on page 64.  
See the section on “System Setup Menu.”  
The speed indication on your FishFinder is usually very accurate. How-  
ever, there are some special cases where the speed reading may be high  
or low. This means that the speed of the water past the transducer may  
not be the same speed that your boat moves through the water. The hull of  
the boat may have a shape which channels water past the transducer at a  
speed which is faster or slower than normal.  
1. To calibrate the speed sensor, set up a course between two known  
points. As markers you can use buoys, range markers, or landmarks.  
Measure the length of time the boat takes to cover a known distance.  
2. You may also use locations indicated by a G.P.S. or Loran unit. (If you  
choose this method, remember that these devices measure “speed  
over ground” or “speed over the bottom.” Tides, currents, or winds  
can create a difference between the FishFinder’s “speed through  
water” measurement and the boat’s “speed over ground.” Before  
calibrating using a G.P.S. or Loran unit, wait for still water or slack tide  
conditions.  
3. If the display unit is reading high or low, you can correct for this using  
the entry for “Speed Cal.” (To reach Speed Cal, go to the System  
Setup Menu. This is described in Section 4.) The entry for Speed Cal  
is a percentage. An entry of “100” equals 100%, meaning that there  
is no correction. If the display unit is producing a low reading, use a  
Installation  
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higher value for Speed Cal. If the display unit is reading high, use a  
smaller number for Speed Cal. You may enter any value between 75  
and 125.  
4. The temperature sensor is usually very accurate, but you can adjust  
the calibration using the entry for “Temp Cal.”  
Final note: After you finish the installation, please remember to fill out the  
Warranty Card included with this manual.  
Installation  
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3 – Operating Instructions  
In this section of the manual, we will explain how to operate the unit.  
(Setup instructions are included in the next section.) Below is a drawing  
of the display unit.  
Display  
area  
Raymarine  
Power button  
PWR  
Page control  
pad  
Setup button  
Clear button  
Zoom button  
A-Scope button  
SETUP  
ZOOM  
CLEAR  
A-SCP  
BOT  
LOCK  
FISHFINDER  
Bottom Lock  
button  
L470  
Fig. 3-1  
Display  
Panel  
Controls on Display Panel  
The FishFinder is designed to be easy to use while the boat is moving.  
You can steady your hand by gripping the right side of the display with the  
fingers of your right hand. This will allow you to use your right thumb to  
press the buttons on the display.  
Notice that some of the buttons can be used in two ways. They do one job  
during a normal display, and a different job when you are setting up the  
PWR  
SETUP  
unit. In this section, we will use symbols like this –  
indicate the buttons on the front of the unit.  
and  
– to  
PWR  
This button turns the power on and off.  
To turn on the power – Press once to turn the power on.  
To enter the Lamp/Contrast Menu – To bring up the  
PWR  
Lamp/Contrast Menu in any operating mode, press the  
key for a moment, then release it.  
To turn off the power – If you press and hold the button,  
the display will say “Powering Off.” If you hold the button  
for more than 3 seconds, the display unit will switch off.  
26  
Operating Instructions  
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Page Control  
Pad  
Up and down arrows – ( and V)  
During setup – Use these controls to call up a choice or  
move to the next line on a menu.  
If the Zoom display is turned on – If the manual zoom  
feature is turned on, these will move the zoom display up  
or down.  
Left and right arrows – (< and >)  
During normal display – Use these buttons to go to the next  
display.  
During setup – Use these arrows to make a choice within a  
line on the menu.  
SETUP  
To enter the Setup Menu – Press  
at any time.  
SETUP  
CLEAR  
To go to the System Setup Menu – Press this button  
twice in all normal displays. If the sidelooker split screen  
(Window Page options F, G, or H) is enabled, this button  
must be pressed three times.  
SETUP  
During setup – Once you make a change, press  
save the change and go back to the normal display.  
to  
During normal display – When an alarm is triggered, use  
CLEAR  
to turn off the buzzer. (The alarm will continue to be  
indicated on the display.)  
CLEAR  
During setup – Once you make a change, press  
to  
save the change and go back to the normal display.  
When the unit is first turned on, it will present the normal FishFinder Page.  
You can reach the Zoom, A-Scope and Bottom Lock Modes by pressing  
buttons on the control panel. See Fig. 3-12.  
The “Zoom” Mode shows a magnified view of a section of  
ZOOM  
the display area.  
The “A-Scope” Mode shows a “real time” view of the area  
A-SCP  
directly under the transducer.  
Operating Instructions  
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The “Bottom Lock” Mode shows a “bottom-up” view. The  
bottom is used as a reference, and all depths are mea-  
sured from the bottom up.  
BOT  
LOCK  
For more information, see the section on “Performance Modes” on page 50.  
Turning the Power On and Off  
PWR  
Press the  
button once to turn on the power. For a few seconds, the  
Lamp/Contrast Menu will appear and the panel light will flash on and off.  
The light will allow you to see in order to set up the display in the dark.  
After the screen flashes three times, the unit will go to the display page  
which was used last (unless this is the first time the unit is powered up).  
The first time power is supplied to the unit, you will be asked to select the  
language used by the displays. English is the default language.You may  
also select any of six other languages. (You can change this setting at any  
time using the System Setup Menu.)  
PWR  
To turn the power off, press and hold the  
seconds.  
button for more than 3  
Setup Memory  
When you first turn on the power, the unit will be prepared to operate  
using a number of preset values. These “default” values are stored in the  
unit at the factory. (The default values are listed in Section 4.)  
This unit has a memory for some of the settings—range, sensitivity, zoom,  
and frequency. (We will explain these in a moment.) When you turn off  
the power, any changes you make to these settings will be saved. You can  
return all of the settings to the factory default values, and reset the trip log  
to zero. To reset the unit, confirm that the unit is off. Press and hold the  
CLEAR  
PWR  
button, then press the  
button for a moment. After the unit  
button.  
CLEAR  
powers up, release the  
28  
Operating Instructions  
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Adjust lamp  
brightness  
Adjust  
contrast  
Fig. 3-2  
Lamp/Contrast  
Menu  
Lamp/Contrast Menu  
PWR  
Press  
The Lamp/Contrast Menu appears when you first press  
PWR  
the  
button and turn on the power. (You will be able to  
see part of the main FishFinder Page behind the Lamp/  
Contrast menu.)  
PWR  
You can press the  
button a second time to exit from  
the Lamp/Contrast Menu and go directly to the FishFinder  
Page. (If you do not make any changes to the settings  
within 7 seconds, the unit automatically exits from the  
Lamp/Contrast Menu anyway.)  
You can also enter the Lamp/Contrast Menu from any of  
PWR  
the other displays by pressing the  
moment.  
button for a  
Adjust lamp  
brightness  
The L470 FishFinder has a backlit display and keypad.  
This feature allows you to use the unit at night. The  
backlight for the display is adjustable to five levels of  
brightness. To turn the lamp on or adjust the brightness,  
use the < or > controls on the Page Control Pad.  
Adjust contrast You can also adjust the “contrast” of the display. This is a  
measure of how light or dark the display appears. Use  
the V control to move from the line for “Lamp” to the line  
for “Contrast.” Use the < or > controls to adjust the  
contrast. (The FishFinder unit has a feature which adjusts  
the contrast automatically to compensate for changes in  
air temperature.)  
Operating Instructions  
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Save settings When the settings on this display are correct, press the  
CLEAR  
button to save the settings and go to the FishFinder  
Page.  
Operating Pages  
The L470 FishFinder has four “pages,” or normal displays. These can be  
used to show different kinds of information. Here is a list of the pages:  
Mode  
Function  
See page  
FishFinder Page  
Standard operating mode  
page 32  
Window Page  
Right half of the display operates the  
same as the FishFinder Page. Left  
half of the display is a user-selectable  
window showing digital information  
or sidelooker information (when the  
optional Sidelooker transducer is used). page 41  
Sidelooker Page  
(using optional  
View of either side of centerline  
of boat (used only with Sidelooker  
Sidelooker transducer) transducer).  
page 43  
page 47  
Digital Page Numerical display of depth, speed,  
distance traveled, battery voltage,  
elapsed time, and water temperature  
graph.  
Yo u can step from one of these pages to another using the < and > arrows  
of the Page Control Pad.  
30  
Operating Instructions  
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FishFinder Page  
Lamp/Contrast Menu  
CLEAR  
Sidelooker Page  
Window Page  
(Only if Sidelooker feature  
is turned on)  
Digital Page  
Fig. 3-3  
Operating  
Pages  
Return to  
FishFinder  
Page  
Operating Instructions  
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FishFinder Page  
Auto range on  
Auto sensitivity on  
Auto zoom on  
Fish symbol on  
Fish alarm set  
Shallow alarm set  
Deep alarm set  
Buzzer symbol  
Auto frequency on  
Transducer frequency  
Auto  
features on  
Speed  
Boat symbol  
Water surface  
Log/distance  
Water  
temperature  
Depth markers  
Fish depth  
Bottom  
indication  
Fish symbol  
Bottom depth  
Range  
Fig. 3-4  
FishFinder  
Page  
Figure 3-4 shows a typical FishFinder display. (The FishFinder Page is  
also called the “chart” or “bottom graph” display.) As time passes, this  
display scrolls from right to left. The scrolling image becomes a record of  
the echoes and the bottom seen by the FishFinder as your boat moves.  
The images at the right side of the display show the most recent echoes.  
Some of these echoes indicate fish, and others show the bottom. As new  
echoes are received, the FishFinder “draws” a graph of the bottom. The  
bottom graph helps you to tell whether the bottom is rising or falling. It  
also allows you to identify the shape or “structure” of the bottom. This can  
indicate a reef or shipwreck.  
Notice that the scrolling speed of the display does not necessarily match  
the speed of the boat. The scrolling speed of the display is called the  
32  
Operating Instructions  
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“chart speed.”You can adjust this using the “Setup Menu.” (See Section 4.)  
Many of the items on this display appear in the other display pages. Since  
you are likely to use the FishFinder Page most often, we will explain all of  
these items here.  
Top of display  
Buzzer symbol  
This symbol shows whether any of the alarms will use the  
buzzer. There are three kinds of alarms: shallow, deep, and  
fish. If one of these alarms is triggered, the unit will present  
a flashing symbol on the display. The Buzzer symbol  
shows whether, in addition to the flashing symbol, the  
alarms will also use the buzzer.  
If the Buzzer setting in the System Setup Menu is on  
(indicating that the buzzer is enabled for all of the alarms),  
this symbol will appear filled.  
If the Buzzer setting is off (indicating that the buzzer is  
disabled for all of the alarms), this symbol will be empty.  
Shallow alarm set  
You can set an alarm to go off if the boat moves into water  
which is shallower than a certain depth. If you set this type  
of alarm, the “S” indicator will appear on the display. If the  
alarm is triggered, the “S” symbol will flash. If the buzzer  
has been turned on (in the System Setup Menu), the  
CLEAR  
buzzer will also sound. To stop the buzzer, press the  
button. The “S” symbol will continue to flash until you move  
into deeper water.  
Deep alarm set  
You can set a different alarm to go off if the boat moves into  
water which is deeper than a certain depth. When this  
alarm is set, the “D” symbol will appear. If the alarm is  
triggered, the “D” symbol will flash. If the buzzer has been  
turned on (in the System Setup Menu), the buzzer will also  
CLEAR  
sound. To stop the buzzer, press the  
button. The  
“D” symbol will continue to flash until you move into  
shallower water.  
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Fish alarm set  
The FishFinder also has an alarm which will sound when-  
ever it detects a fish. When this alarm is set, the fish  
symbol appears at the top of the display. If the alarm is  
triggered and the buzzer has been turned on (in the  
System Setup Menu), the buzzer will sound for a moment.  
Auto features on (AUTO)  
If any of the automatic features are turned on, the “Auto”  
indication will appear here. (These include the automatic  
range, auto sensitivity, and auto zoom features.)  
Auto range on (R)  
The “range” is the maximum depth the unit is set to  
measure. When the auto range feature is on, the  
FishFinder chooses the correct range setting automatically.  
Auto sensitivity on (S)  
The “sensitivity” controls the ability of the unit to tell the  
difference between echoes of different strengths. A higher  
sensitivity setting makes it easier to see smaller fish, but  
also may pick up background noise. When auto sensitivity  
is on, the FishFinder chooses the correct sensitivity setting  
automatically.  
Auto zoom on (Z)  
The “zoom” can be used to magnify the image from a small  
section of the water below the boat. (This is used with the  
Zoom Mode, which we will describe in a moment.) When  
the auto zoom feature is on, the FishFinder automatically  
moves the zoom window up or down to track the bottom.  
Fish symbol on  
When the FishFinder sees a fish, it can show this by  
displaying a fish symbol. When the fish symbol feature is  
turned off, the FishFinder indicates a fish as an arch-  
shaped line on the display. For more information, see the  
section on “Fish Indications.”  
Transducer frequency  
The transducer can use two frequencies - 50 kHz for wide  
coverage, or 200 kHz for a detailed view. You can also set  
34  
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the unit to use both frequencies at the same time (“dual  
frequency”), or even display both frequencies at once (“split  
screen”).  
Auto frequency on (A)  
An “A” indication here shows that the unit is choosing the  
frequency automatically. (For more on this, see “Choosing  
the Frequency.”)  
Boat symbol This symbol is always turned on. It indicates that the new  
information appears at the right edge of the display, and the  
older information moves toward the left.  
Center of display  
Water surface This symbol (“0”) shows the depth indicated by the top of  
the display. Usually, this is the level of the surface of the  
water. (If the Zoom Mode is turned on, this will show the  
depth of the top of the zoom area.) The depth is shown  
using the same units as the rest of the display. This  
could be feet (FT), fathoms (FA), or meters (M), depend-  
ing on the setting you make in the System Setup Menu.  
Depth markers  
These markers show depths between the surface and the  
full depth range. In this example, the unit is set for a depth  
range of 100 feet. This means that each of the depth  
markers shows an interval of 20 feet.  
Speed  
This entry shows the speed of the boat through the water.  
From the System Setup Menu, you can turn this item off or  
change the units used for this display.  
Log/distance This shows how far the boat has traveled since the log was  
last reset. From the System Setup Menu, you can turn this  
item off or change the units used for this display.  
Water temperature  
This entry shows the current water temperature at the  
surface of the water. (The reading for water temperature  
can be helpful for finding fish. A particular type of fish  
will often prefer water in a narrow temperature range.)  
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From the System Setup Menu, you can turn this item off  
or change the units used for this display.  
Fish symbol This indicates that the FishFinder sees a fish. Generally,  
the larger the fish symbol appears, the larger the fish. (The  
size of the fish symbol actually depends on a number of  
factors. See the section on “Fish Indications.”)  
If the fish is detected using the narrow 200 kHz beam, the  
display will show a filled-in symbol. If the fish is detected by  
the wide 50 kHz beam, the display will use a hollow symbol.  
(For more on this, see “Choosing the Frequency.”)  
Fish depth  
This indicates the depth of the fish shown by the fish  
symbol. This number will be shown using the same depth  
units (feet, fathoms, or meters) you have selected on the  
System Setup Menu. The fish depth indicator is turned off  
when the fish symbol function is off.  
Bottom of display  
Bottom indication  
This shows the bottom of the lake or sea. You can compare  
this to the range depth shown in the lower right-hand  
corner. (In this example, the checkered pattern shows the  
unit is getting a strong echo return from the bottom. See  
the information on the White Line feature in the Setup  
Instructions.)  
Range  
The “range” is the maximum depth the unit is set to  
measure. In this example, this is 100 feet. You can set the  
range manually, or the FishFinder can do it automatically.  
Bottom depth This is the depth of the bottom shown on the display. You  
can select FT (feet), FA (fathoms), or M (meters) using the  
System Setup Menu. If the FishFinder can’t tell how deep  
the water is, the last known depth flashes on the display.  
This will continue until the unit can see the bottom again.  
Before we explain the other pages, there are some general things you  
should know about the operation of the FishFinder.  
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Choosing a Frequency  
We said that the FishFinder uses sound waves to “see” through the water  
under the boat. The “frequency” is a measure of how fast the sound  
waves change or “vibrate.” The FishFinder uses sound waves with two  
different frequencies – 50 kHz and 200 kHz. Raymarine uses these two  
frequencies because each is better for a particular purpose:  
50 kHz frequency  
•
•
Scans a wide area  
Penetrates water well, good for deep water  
200 kHz frequency  
•
•
•
Scans a narrower area, but produces a more detailed view  
Good for seeing fish near the bottom or fish close together  
Better for use in very shallow water  
“Dual” frequency (both 50 kHz and 200 kHz at once)  
•
•
•
•
Has the advantages of both frequencies  
Good depth penetration  
Good detail in display  
Using the “Dual 50 kHz” setting, the display is produced using the  
signal from the 50 kHz beam, with additional information from the 200  
kHz beam.  
•
Using the “Dual 200 kHz” setting, the display is produced using the  
signal from the 200 kHz beam, with additional information from the 50  
kHz beam.  
If you are using one of the dual frequency settings, you can get some  
useful information from the fish symbols. If the fish is spotted by the  
narrow 200 kHz beam, the fish symbol will be black or filled-in. If a fish is  
detected by the wide 50 kHz beam, the symbol will be hollow.  
When the unit is first turned on, it is set to use the Auto frequency feature.  
When set this way, the unit begins by using the 200 kHz frequency. If the  
bottom depth increases to more than 250 feet (or 50 fathoms or 80 meters),  
the unit will automatically switch to the 50 kHz frequency. If the unit cannot  
find the bottom, it will try both the 200 kHz and the 50 kHz frequencies.  
The unit will then use the frequency which finds the bottom first.  
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Fish Indications  
Even using advanced sonar technology, it is sometimes hard to detect a  
fish in the water. The body of a fish is just a little more dense than the  
surrounding water. There is really nothing very solid for the sound waves  
to bounce off of. The FishFinder L470 is very good at telling the difference  
between a fish and the surrounding water. In fact, Raymarine is the leader  
in this technology.  
When the FishFinder detects a fish, it can be indicated by a fish symbol on  
the display. In general, a larger symbol means a larger fish. This rule is  
not always true, though. Let’s say that there are two fish of the same size:  
one is close to the surface, and the other is near the bottom. The fish  
which is close to the surface will have a larger symbol. This is because  
the fish which is closer returns more of the sound waves back to the  
FishFinder.  
Actually, the sound waves are usually reflected by the air sac near the  
center of the fish, and not by the body of the fish. The size of this air sac  
is different for different kinds of fish. This can also affect the size of the  
An arch-shaped image indicates a fish.  
The same fish appears differently  
when shown by the 50 kHz or 200 kHz  
transducer beams.  
50 kHz  
200 kHz  
This indicates a group of small fish.  
This shows a fish detected in  
sidelooker mode.  
A shallow arch or horizontal line is  
generated when the boat is moving  
slowly or stopped.  
When the boat is moving very fast,  
Fig. 3-5  
a fish appears as a single vertical line.  
Fish  
Indications  
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fish symbols on the display. A fish with a large air sac will produce a large  
fish symbol, while a fish with a small sac will produce a small symbol.  
The symbol also indicates which of the two frequencies was used to locate  
the fish. If the fish was spotted by the wide 50 kHz beam, the symbol will  
appear to be hollow. If the fish was detected by the narrow 200 kHz  
beam, the symbol will be solid.  
If the fish symbol feature is turned off, the FishFinder indicates fish in a  
different way. See Fig. 3-5. An arch-shaped mark on the display usually  
indicates a fish. Again, a larger arch usually indicates a larger fish.  
Several arches together show a school of fish.  
The return from a fish will have a different appearance, depending on the  
frequency used. If a fish is spotted by the wide 50 kHZ beam, the arch will  
be broad. When using the narrower 200 kHz beam, the same fish will  
produce a narrower arch.  
The shape of the arch is also affected by the speed of the boat. If you are  
moving slowly, the arches tend to be longer. If the boat is moving more  
quickly, the arches are short and peaked. If the boat is moving very fast, a  
fish may be indicated by a single vertical line.  
You can select the frequency from the Setup Menu.  
Bottom Indications  
The bottom usually produces a strong echo, so it is easy for the FishFinder  
to see a lot of detail. The FishFinder can indicate many different kinds of  
bottom conditions. See Fig. 3-6. A hard bottom appears as a thin line. A  
softer bottom or a bottom covered with seaweed will produce a wide line,  
as the sound waves reflect from different layers of the bottom. An uneven  
bottom which is covered with rocks or coral produces a complex display  
like that shown in the last part of Fig. 3-6. The bottom image is irregular,  
with long “tails” pointing upward. A wreck produces a similar image.  
When the White Line feature is turned on, the unit can display even more  
information about the bottom. In Fig. 3-4, the FishFinder is getting a good  
echo from the bottom, so the upper layer of the bottom is shown in a  
checkerboard pattern. Notice that the lower layer of the bottom is shown  
as a solid display. This indicates a weaker echo. Sometimes this means  
that the upper layer of the bottom is soft. Some of the sound waves may  
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Hard  
(Sand)  
Soft  
Rocks  
(Mud)  
Fig. 3-6  
Bottom  
Conditions  
reach through this layer, and may be reflected by a more solid layer below.  
It is also possible that the sound waves are making two complete trips –  
hitting the seabed, bouncing off of the bottom of the boat, then reflecting  
off the seabed again. This can happen if the water is shallow, the seabed  
is hard, or the sensitivity is set to a high value.  
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Window Page  
Fig. 3-7  
Window Page  
The Window Page is a flexible feature which allows you to combine  
several different kinds of information on the display of the unit. See  
Fig. 3-7.  
The right side of the Window Page is a half-screen version of the Fish-  
Finder Page. All of the features of the full-screen FishFinder Page are avail-  
able, including Zoom, A-Scope, and Bottom Lock. The fishfinder features of  
the Window page operate identically to those in the FishFinder Page.  
On the left side of the Window Page is one of eight selectable windows,  
each of which shows a portion of the Digital Page or the Sidelooker Page.  
You select which window to display using the Window option in the Setup  
menu. The eight Window selections are designated A through H, and are  
illustrated in Fig. 3-8.  
Window  
Contents  
A
B
C
D
E
F
Large Depth, small Speed, Log, Temperature  
Large Speed, small Log, Temperature, Depth  
Large Depth, large Speed, 30-minute temperature graph  
Small Depth, Speed, Log, and 30-minute Temperature graph  
Small Depth, Speed, Log, Temperature, and Battery voltage  
Left Sidelooker  
G
H
Both left and right Sidelooker  
Right Sidelooker  
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Option A  
Option C  
Option E  
Option G  
Option B  
Option D  
Option F  
Option H  
Fig. 3-8  
Options  
for Window  
Page  
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The digital displays in Window options A, B, C, D, and E all behave  
identically to the corresponding ones in the full-screen Digital Page (see  
page 47).  
The sidelooker displays in Window options F, G, and H all behave  
identically to those in the full-screen Sidelooker Page (see page 44).  
These options will only be displayed if the Sidelooker feature is enabled.  
Sidelooker Page  
Transducer mounted  
on trolling motor  
Rock  
31° beam  
Fish  
Boat  
Rock  
Fish  
Fig. 3-9  
Sidelooker  
Feature  
Sidelooker  
transducer  
11° beam aimed  
down at 4° angle  
This feature will only work if an optional Sidelooker transducer has  
been installed, and if the Sidelooker feature has been turned on in the  
System Setup Menu. The Sidelooker feature is very helpful for certain  
kinds of fishing. It allows you to check for underwater structure along  
the sides of a stream or river, under the edge of a bank or pier, or into  
stumps or weed beds.  
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The optional Sidelooker transducer transmits two acoustic beams—one to  
the port side of the boat, and one to the starboard. These are displayed  
on the left and right halves of the Sidelooker Page. See Fig. 3-9.  
Once the Sidelooker feature has been turned on, you can reach the  
Sidelooker page easily. Press the < or > buttons on the Page Control Pad  
until the Sidelooker Page appears. The unit will present a display similar to  
Fig. 3-10.  
Boat  
symbol  
Side  
range  
Bottom/  
shore  
indication  
Dashed  
vertical  
line  
Fish  
indication  
Fig. 3-10  
Sidelooker  
Page  
Depth  
The Sidelooker Page, like the FishFinder Page, displays a graph or chart.  
The scrolling vertical dashed line represents the centerline of the boat. As  
new Sidelooker echoes are received, the new information appears at the  
top of the display, and older information moves towards the bottom. There  
is no relationship between the chart speed of the FishFinder and the  
speed of the boat. (The speed at which the display moves is set by the  
entry for “chart speed” in the Setup Menu.)  
When the Fish Symbol feature is turned off, any fish detected will appear  
as long, vertical lines. These will be slightly arched towards the center of  
the display. The unit can also be set to display fish symbols, but the fish  
arches are usually more helpful. The Sidelooker transducer transmits at  
the 200 kHz frequency. If the unit spots any fish while the Fish Symbol  
feature is on, they will be indicated by solid fish symbols. (You can turn the  
Fish Symbol feature on or off from the System Setup Menu. See Section 4.)  
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Underwater objects such as submerged tree stumps or rocks can also be  
detected by the Sidelooker transducer. These objects usually appear as  
thicker vertical targets. The Sidelooker sounding beam is transmitted very  
close to the surface of the water. In rough or choppy water this turbulence  
may appear on the Sidelooker display as “noise” or “clutter.” The Side-  
looker will also display noise or clutter when your boat travels at high  
speeds or in very shallow water. For best results, use the Sidelooker at  
idle or slow trolling speeds.  
On the Sidelooker Page, you may select one of three views using the  
Sidelooker View option in the Setup menu. These are labeled F, G, and H  
to match the three Window options which include Sidelooker views.  
View F looks only to the port (left) side of your boat. The boat symbol  
appears at the top of the display and the dashed vertical line appear  
on the right side of the screen.  
View G looks to both sides of your boat. The boat symbol appears at  
the top of the display and the dashed vertical line appears in the  
center of the screen.  
View H looks only to the starboard (right) side of your boat. The boat  
symbol appears at the top of the display and the dashed vertical line  
appears on the left side of the screen.  
Here are the special items on this display:  
Boat symbol This is pointing forward on the screen to indicate that, on  
the Sidelooker Page, the view is from above, as seen from  
a bird’s-eye. The boat symbol will appear on the top left,  
center, or right, depending on the view selected (F, G, or H)  
in the Sidelooker View option in the Setup Menu.  
Dashed  
vertical line The scrolling vertical line is drawn under, or behind, the  
boat symbol to indicate the division between the information  
produced by the left and the right sidelooker transducer  
elements.  
Side range  
This is the maximum distance the unit will be able to see  
using the current range setting. Remember that the sound  
waves move out at a shallow angle, so this distance is  
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measured sideways. See Fig. 3-9. The units used here  
are chosen using the entry for Depth Units in the System  
Setup Menu. If you have selected feet (FT) or fathoms  
(FA), the distance shown here will be measured in feet. If  
you have selected meters (M), the distance shown here will  
be in meters.  
Fish indication An arch-shaped mark shows that the unit has detected a  
fish. In general, a larger arch indicates a larger fish. If the  
fish symbols are turned on, the unit will indicate fish using  
these instead. A number beside each symbol shows the  
distance from the boat to the fish. Remember that this  
distance is measured sideways. See Fig. 3-9. The units  
used here are chosen using the entry for Depth Units in the  
System Setup Menu. If you have selected feet (FT) or  
fathoms (FA), the distance shown here will be measured in  
feet. If you have selected meters (M), the distance shown  
here will be in meters.  
Bottom/Shore  
Indication  
This indicates the area where the transducer beam is start-  
ing to see the bottom, shore, or some other object. Again,  
remember that the beam is looking sideways, so this could  
really represent the bank of a stream or the space under a  
dock or pier.  
Depth  
This is the depth directly below the boat. Even when the  
Sidelooker feature is turned on, the downward-looking  
transducer is still used to measure the depth.  
The Sidelooker feature has settings for Range and Sensitivity which are  
separate from the Range and Sensitivity settings used for the standard  
FishFinder Page. See Section 4 for details.  
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Digital Page  
Fig. 3-11  
Digital Page  
The Digital Page presents several measurements at the same time using  
large, easy-to-read digital numbers. To select the Digital Page, press  
either the < or > button on the Page Control Pad until the Digital Page  
appears. The Digital image is useful when you are traveling, but not  
looking for fish or checking the appearance of the bottom. See Fig. 3-11.  
The displayed regions on the screen are:  
Depth  
The depth of the bottom in feet, fathoms, or meters,  
depending on your selection in the System Setup Menu. If  
the unit loses its “lock” on the bottom, the last known depth  
will flash on and off.  
Speed  
The speed of your boat through the water derived from the  
impeller. This is measured in MPH (statute miles per hour),  
KTS (knots, or nautical miles per hour), or KPH (kilometers  
per hour), depending on your selection in the System Setup  
display. The speed value may also be calibrated within the  
System Setup Menu. (See page 64 for details.)  
Log  
The distance traveled, calculated using the signal from the  
paddlewheel or impeller. The L470 remembers this value  
after the unit is turned off, provided the unit is shut off using  
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PWR  
the  
button. The Log may be reset to zero from the  
Setup Menu. (See page 63 for details.)  
Battery  
The measured DC voltage of your boat’s battery.  
Elapsed Time The amount of time which has passed since turning the unit  
on, in Hours : Minutes : Seconds. The Elapsed Time may  
be reset to 00:00:00 from the Setup menu when the Digital  
Page is visible. (See page 76 for details.)  
Temperature The measured temperature of the water at the transducer,  
in degrees Fahrenheit or degrees Celsius, depending on  
your selection in the System Setup Menu. The temperature  
value may be calibrated from the System Setup Menu. (See  
page 64 for details.) The temperature variation over time is  
displayed in a scrolling graph. The graph is updated once  
every 30 seconds, so a one-hour history can be displayed  
by the unit.  
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FishFinder Page  
Zoom Mode  
ZOOM  
A-Scope Mode  
A-SCP  
Bottom Lock Mode  
BOT  
LOCK  
Fig. 3-12  
Performance  
Modes  
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Performance Modes  
This unit has three “performance” modes which can be used to add to the  
standard FishFinder Page. These are the Zoom, A-Scope and Bottom  
Lock Modes. Each mode presents the raw information from the transduc-  
ers in a special way. To reach one of these modes, press the correspond-  
ing button on the unit. See Fig. 3-12.  
Zoom Mode  
Zoom display  
(magnified)  
Normal  
display  
Top of zoom  
area  
Line indicates  
zoom area  
Bottom of  
zoom area  
Zoom  
magnification  
Fig. 3-13  
Zoom Mode  
The Zoom Mode gives you a way of enlarging or magnifying all or part of  
the display area. (The “zoomed” display is actually larger only in the  
ZOOM  
vertical direction.) You can reach Zoom at any time by pressing the  
button. For a moment, the display will say, “ENTERING ZOOM MODE,”  
then the zoomed image will appear.  
In Figure 3-13, only part of the display is zoomed. In this “split” display,  
the right side shows the same information as the FishFinder Page. The  
left side shows the magnified view. In each case, the new information  
appears at the right edge of the display, and moves to the left.  
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Many of the items presented by the Zoom Mode are the same as those on  
the FishFinder Page. There are a few additional items:  
Zoom magnification  
This indicates the amount of “zoom” or magnification. You  
always set the amount of zoom manually. While the Zoom  
SETUP  
screen is visible, press  
. This will bring you to the  
Zoom Menu, shown in Fig. 4-10. You can choose an x2  
view (double the normal display size), x4, x6 or x8. See  
Section 4 for details. You must also select the area or  
“window” of the water you want to zoom. See the next  
item.  
Zoom area  
When you turn on the zoom feature, it can only enlarge a  
part of the FishFinder Page. You must decide which part  
you want to enlarge. As we said, the right side of the “split”  
display shows the normal FishFinder Page. The vertical  
line at the right edge of this display shows the area or  
“window” of the water being enlarged.  
When the FishFinder is set for Auto Zoom, it will choose the  
zoom area automatically. The unit always chooses an area  
of the water which includes the bottom. The unit then  
moves this area up or down to keep the bottom in the  
picture. The Auto Zoom feature is great for bottom fishing.  
You may also set the zoom area manually. While the Zoom  
SETUP  
screen is visible, press  
. This will bring you to the  
Zoom Menu, shown in Fig. 4-10. You can then select  
Manual Zoom. See Section 4 for details. Once you are  
back to the zoom display, you can move the zoom area up  
or down (using the  
and V arrows of the Page Control  
Pad) to select the area you want to be enlarged.  
The Zoom image can also be presented using the whole display. See  
Section 4 for details.  
If you want to exit from the Zoom Mode, press the Zoom button again  
while the Zoom image is visible. For a moment the display will say,  
“Exiting Zoom Mode,” then the unit will return to the FishFinder Page.  
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A-Scope (Bottom Coverage) Mode  
Normal  
display  
A-Scope  
display  
A-Scope image  
(real time image)  
Fish  
indication  
Fig. 3-14  
A-Scope  
Mode  
(half screen)  
Bottom  
coverage  
On the FishFinder Page the bottom graph is “drawn” after the FishFinder  
receives several echoes. This has the effect of showing a record of the  
bottom contour. The A-scope Mode shows raw sonar data directly from the  
transducer beam. This gives you a “real time” image of fish and bottom  
structure directly below the transducer. (The A-Scope Mode is sometimes  
called an “In-Line Flasher.”) This function is very useful in showing the  
strength of the echo returned from a fish.  
You can reach the A-Scope Mode at any time by pressing the A-Scope  
button. Figure 3-14. The left section of the A-Scope Mode shows a  
section of the normal FishFinder Page. The right section shows the A-  
Scope image.  
A-Scope image  
The normal FishFinder Page with the White Line feature  
enabled (see Fig. 3-4) allows you to tell the difference  
between two levels of echo strength. Weak targets are shown  
in black, while strong targets are shown in a gray checkered  
pattern. The A-Scope image, by contrast, gives you more  
detailed information. In the A-Scope Mode, stronger echoes  
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create wider lines. Unlike the scrolling FishFinder Page, the  
A-Scope does not show a history of scans; instead, it is a  
“real-time” display. The shape of the A-Scope display shows  
the result as the sonar beam spreads as it penetrates deeper  
into the water.  
Bottom coverage  
The digital number at the bottom of the A-Scope image  
indicates the bottom coverage. This is the diameter of the  
sonar beam where it meets the bottom. This is computed  
using the beam angle of the transducer for the frequency  
you have selected. If the entry for Depth Units in the  
System Setup Menu is set to Feet or Fathoms, the bottom  
coverage will be reported in feet. If the Depth Units entry is  
set to Meters, the bottom coverage will be reported in  
meters. The beam angle used for the computation depends  
on the frequency selected in the Setup Menu:  
Frequency Bottom Coverage Beam Angle  
200 kHz  
16°  
65°  
65°  
65°  
50 kHz  
200 DUAL  
50 DUAL  
SPLIT  
16° (top);  
65° (bottom)  
If you want to exit from the A-Scope Mode, press the A-Scope button  
again. The unit will return to the FishFinder Page.  
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Bottom Lock Mode  
Top and  
bottom of  
Bottom  
Lock range  
Bar  
indicates  
area being  
displayed  
Bottom  
indication  
Fig. 3-15  
Bottom Lock  
Mode  
Bottom  
depth below  
surface  
The normal display on the FishFinder is a “top-down” view, as if it was  
seen from the surface of the water. The Bottom Lock Mode shows a  
“bottom-up” view. The bottom is used as a reference, and all depths are  
measured up from the bottom.  
BOT  
LOCK  
You can reach the Bottom Lock Mode at any time by pressing the  
button. For a moment, the display will say, “ENTERING BOTTOM LOCK,”  
then the Bottom Lock image will appear.  
Figure 3-15 shows the FishFinder Page with the split Bottom Lock feature  
enabled. The right section of the split image shows a section of the  
normal FishFinder Page. The left section shows the Bottom Lock image.  
Bottom indication  
The actual surface of the bottom under your boat varies in  
depth and contour. The bottom lock feature “flattens out”  
the bottom image to give you greater visibility of fish targets  
or structure resting on or near the bottom. On the Bottom  
Lock image, the bottom itself is shown as a flat surface, and  
all targets are shown relative to this flattened bottom.  
When using Bottom Lock, you will probably want to keep  
the Range (not the Bottom Lock Range) set to Auto. If the  
Range is set to Manual, and the bottom moves deeper than  
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the selected range, then Bottom Lock will not display the  
bottom image.  
Bottom Lock  
Range  
The range for the Bottom Lock image is set independently  
from the master range setting for the FishFinder. This  
“Bottom Lock Range” is measured up from the bottom,  
rather than down from the surface. The Bottom Lock Range  
may be adjusted using the Setup Menu when the Bottom  
Lock feature is enabled. (See page 73). The current setting  
for the Bottom Lock Range is shown in the upper right  
corner of the Bottom Lock image. This number is the  
maximum distance above the bottom the unit will display on  
the Bottom Lock image. (If the Bottom Lock Range number  
is larger than the actual depth of the water, the unit will not  
show any target in water shallower than the transducer  
itself.)  
The Bottom Lock feature may be used with a split screen presentation or  
in a full-screen presentation. You can make a selection from the Setup  
menu. See page 74 for details.  
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4 – Setup Instructions  
The Setup Menu  
SETUP  
Press the  
button to enter the Setup Menu. The menu items avail-  
able will change, depending on the display or combinations of displays the  
SETUP  
unit is presenting when you press  
. Figure 4-1 shows the order of  
the menu items if you start from the normal FishFinder Page. (The  
FishFinder  
Page  
SET UP  
Range  
Menu  
Item  
PAGE  
Frequency  
Sensitivity  
Menu Item  
Menu Item  
PAGE  
PAGE  
(press twice)  
Chart Speed  
Menu Item  
Log Reset  
Menu Item  
Fig.4-1  
Setup Menu Items  
(from FishFinder  
Page)  
PAGE  
Setup Instructions  
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order will be different if you start from the Zoom or Bottom Lock Modes.)  
To move from one menu item to another, press the  
the Page Control Pad. (If you continue to press  
and V arrows of  
and V often enough,  
you will eventually return to the same menu item which appeared origi-  
nally.) The unit remembers which menu item was last used for each page,  
and will display that item the next time you go to the Setup Menu. To  
CLEAR  
return to the normal display, press  
. (The menu will disappear on its  
own in seven seconds). This arrangement allows you to reach any item  
on the Setup Menu easily, make a change, then return to the normal  
display quickly.  
Range Setting  
Fig. 4-2  
Range  
Menu Item  
See Fig. 4-2. The “range” sets the maximum depth the unit will be able to  
see. Use the < and > arrows of the Page Control Pad to select Auto or  
Manual range. The Range menu item for the downlooker is available  
from all pages except the Digital Page and the Sidelooker Page. (The  
Sidelooker Page does have a Range menu item, but only for the  
Sidelooker.)  
Auto range  
The FishFinder can be set to select the range by itself,  
automatically. The unit chooses the shallowest range which  
will still include the bottom in the display. If the bottom rises  
or falls, the FishFinder will adjust the range to keep the  
bottom in the display.  
Manual range You can also set the range yourself. (However, if the  
bottom rises or falls, the FishFinder will not adjust for this.)  
As soon as you select Manual, the cursor will jump down a  
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line so you can choose the range you want. Use the < and >  
arrows of the Page Control Pad to make a selection. Here  
are the choices:  
Possible Range Settings (Auto or Manual)  
In feet: 5, 10, 15, 20, 30, 40, 50, 60, 80, 100, 150, 200, 250, 300, 400,  
600, 800, 1000, 1500, 2000, 2500  
In fathoms: 1, 2, 3, 4, 5, 8, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100, 150,  
200, 250, 300, 450  
In meters: 2, 4, 6, 8, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100, 150, 200,  
300, 400, 500, 600, 800  
CLEAR  
If you are done with your setup changes, press the  
button to go back  
to the normal display. To select the next menu item, press the V arrow of  
the Page Control Pad.  
Sensitivity Setting  
Fig. 4-3  
Sensitivity  
Menu Item  
The “sensitivity” adjusts the ability of the unit to tell the differences  
between echoes of different strengths. In general, the sensitivity should  
be as high as possible, to detect the fish and show the detail on the  
bottom. However, if the sensitivity is too high, the unit will begin to see  
bubbles in the water, debris, and other “background noise.” Use a higher  
sensitivity setting for deeper water, and a lower setting for shallower water.  
The L470 FishFinder has separate sensitivity settings for the 50kHz,  
200kHz, and Sidelooker channels. On the bar graph below “Auto/Man,”  
the number “200” shows that the sensitivity for the 200kHz signal is being  
adjusted. “50” shows that the sensitivity for 50 kHz is being adjusted. If  
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there is no number next to the bar graph, this tells you that the Sidelooker  
is being adjusted.  
From the menu item for the range setting, press the V arrow of the Page  
Control Pad. The next menu item will allow you to set the sensitivity. See  
Fig. 4-3. Use the < and > arrows of the Page Control Pad to select Auto  
or Manual sensitivity.  
Auto sensitivity  
The FishFinder can be set to select the sensitivity by itself,  
automatically. The unit chooses the sensitivity setting  
which will detect fish, but will also show a minimum of  
background noise. If the amount of background noise  
changes (due to changing depth or water conditions), the  
FishFinder will change the sensitivity to adjust. (You can still  
adjust the sensitivity of the unit while it is using Auto  
sensitivity. Once you select Auto sensitivity using the menu  
item shown in Fig. 4-3, use the V arrow of the Page  
Control Pad to go to the next line. Use the < and > arrows  
of the Page Control Pad to fine-tune the sensitivity setting.  
To reset the Auto sensitivity to its normal or default setting,  
switch the sensitivity from Auto to Man and back to Auto  
again. It will also be reset when the FishFinder is turned off  
and back on again.  
Manual sensitivity  
You can also set the sensitivity manually. If the amount of  
background noise changes, the FishFinder will not adjust  
for this. If you choose Manual sensitivity, press the V  
arrow of the Page Control Pad to go to the next line. Use  
the < and > arrows of the Page Control Pad to move the  
dark bar on the display. Making the bar longer increases  
the sensitivity.  
CLEAR  
If you are done with your setup changes, press the  
button to go back  
to the normal display. To select the next menu item, press the V arrow of  
the Page Control Pad.  
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Chart Speed Setting  
Most of the displays on the FishFinder show a record of the signals the  
unit has received. The new information appears at the right (or top) edge  
of the display. The older information moves toward the left (or bottom) of  
the display. The “chart speed” adjustment sets the speed at which the  
display moves. (Notice that the scrolling speed of the display is not  
related to the speed of the boat over the bottom. The speed of the display  
is controlled only by the chart speed setting.)  
Section of bottom shown  
at higher chart speed -  
Display shows  
more detail  
Same section shown at  
slower chart speed -  
Fig. 4-4  
Display shows  
longer "history"  
Changing the  
Chart Speed  
Setting  
Figure 4-4 shows how the chart speed setting affects the display. In both  
cases, the unit is showing the same section of the bottom. Using a faster  
chart speed, the display has more space on the display to show this  
section, so it can include more detail. Using a slower chart speed, this  
same information is displayed in a smaller horizontal space.  
A faster chart speed setting shows more detail on the bottom. You will  
probably want to use a faster setting when you are looking for fish.  
A slower chart speed setting shows a longer record of the bottom you  
pass over. Any fish detected will stay on the display longer.  
From the display for the sensitivity setting, press the V arrow of the Page  
Control Pad. The next menu item will allow you to set the chart speed.  
See Fig. 4-5. The chart speed adjustment affects both the normal  
downlooking display and the Sidelooker display.  
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Fig. 4-5  
Chart Speed  
Menu Item  
Chart speed This adjusts the speed at which the information moves  
across the display. Use the < and > arrows of the Page  
Control Pad to change the chart speed. Making the bar  
longer increases the chart speed. If you move the bar all of  
the way to the left, the FishFinder will “freeze” and hold the  
current display. (The depth indicator will continue to update.)  
CLEAR  
If you are done with your setup changes, press the  
button to go back  
to the normal display. To select the next menu item, press the V arrow of  
the Page Control Pad.  
Frequency Setting  
Fig. 4-6  
Frequency  
Menu Item  
“Frequency” is a measure of how fast the sound waves from the trans-  
ducer change or “vibrate.” This unit uses sound waves with two different  
frequencies—50 kHz and 200 kHz. For an explanation on the uses of  
these two frequencies, see the section on “Choosing a Frequency.”  
From the Chart Speed Menu Item, press the  
V
arrow of the Page Control Pad.  
The next menu item will allow you to make the frequency setting. See Fig. 4-6.  
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AUTO frequency  
If the frequency is set to AUTO, one of the two single  
frequencies (200 or 50 kHz) will be automatically selected,  
depending on the depth of the bottom. If the bottom is  
deeper than 350 feet (or 60 fathoms or 100 meters), the  
unit will use the 50kHz frequency. In shallower water, the  
unit will use the 200 kHz frequency.  
MAN (Manual) frequency  
You can also set the frequency manually. When you  
choose Frequency MAN, the cursor will jump down to the  
next line and wait for you to choose a frequency. Use the  
< and > controls on the Page Control Pad to choose one of  
the following five frequency selections:  
•200 kHz, single frequency – The unit will use only the  
narrow 200 kHz beam. If the fish symbols are enabled (in  
the System Setup Menu), they will appear solid.  
•50 kHz, single frequency – The unit will use the wider 50  
kHz beam. If the fish symbols are enabled (in the System  
Setup Menu), they will appear hollow.  
•200 kHz, dual frequency – The presentation of the bottom  
image and fish targets is the same as with the single 200  
kHz frequency. If fish symbols are turned on in the System  
Setup Menu, then they are displayed using the signal from  
the 200 kHz beam (solid symbols) as well as from the 50  
kHz beam (hollow symbols).  
•50 kHz dual frequency – The presentation of the bottom  
image and fish targets is the same as with the single 50  
kHz frequency. If fish symbols are turned on in the System  
Setup Menu, then fish symbols are displayed using the  
signal from the 200 kHz beam (solid symbols) as well as  
from the 50kHz beam (hollow symbols).  
•Split – The full image from both frequencies is shown at the  
same time. The 200 kHz display appears on the top half of  
the screen, and the 50 kHz display appears on the bottom  
half of the screen.  
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If you are using one of the dual frequency (or split) selections, some of the  
fish may appear in the wide 50 kHz beam, but not in the narrower 200 kHz  
beam. Fish which appear in the narrow 200 kHz beam are located more  
directly under the transducer, and the symbol will be solid black. Fish  
which appear in the wider 50 kHz beam are less precisely located, and the  
symbol will be hollow.  
CLEAR  
If you are done with your setup changes, press the  
button to go back  
to the normal display. To select the next menu item, press the V arrow of  
the Page Control Pad.  
Resetting the Log  
Fig. 4-7  
Log Reset  
Menu Item  
The “log” measures how far the boat has traveled through the water. The  
log records the distance traveled since it was last reset. You can reset the  
log at any time using the display shown in Fig. 4-7.  
Distance reading  
The number inside the box shows the distance reading now  
being displayed by the unit. To reset the log to zero, press  
either the < or the > arrows of the Page Control Pad.  
CLEAR  
If you are done with your setup changes, press the  
button to go back  
to the normal display. To go back to the Range Menu Item, press the V  
arrow of the Page Control Pad. To move on to the System Setup Menu,  
SETUP  
press  
again.  
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System Setup Menu  
Note - The “System Setup Menu” is not the same as the “Setup Menu”  
described earlier. The “Setup Menu” includes a series of small screens,  
shown in Fig. 4-1. The “System Setup Menu” is a single display, which  
includes several different items. See Fig. 4-8 and 4-9.  
FishFinder Page  
Setup Menus  
System Setup Menu  
Fig.4-8  
Reaching the  
System Setup  
Menu  
SETUP  
You can reach the System Setup Menu at any time by pressing  
twice. See Fig. 4-8. (If you have called up the Window Page, with option  
SETUP  
F, G, or H selected, you must press  
a third time.) This means that  
you can reach this display, make a change, then return to the normal  
display quickly. Figure 4-9 shows the items in this menu.  
Fig. 4-9  
System  
Setup Menu  
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To change one of the items, use the  
and V arrows of the Page Control  
Pad to move up or down in the display. This will highlight an area on the  
display where the unit is ready to make a change. (This is like the “cursor”  
on a computer.) Once you have moved to the correct line, press the < or >  
arrows of the Page Control Pad to change the entry. Make your change,  
CLEAR  
then press the  
button to leave the display. The unit will store any  
changes you have made.  
Simulator  
This unit has a built-in simulator. When the simulator is  
enabled, it presents a realistic display. You can use this  
display to learn about the features of the unit without  
operating your boat. The information on this display is  
generated by the unit itself, and does not come from a  
transducer. When this mode is turned on, you will see the  
word “Simulation” flashing on the display.  
Language  
The unit can present the display information in one of seven  
different languages. English is the default language which  
is selected at the factory.You may specify a different  
language at any time using this menu item. As you scroll  
through the languages in the menu, the wording on the  
menu will change to that language as well. The language  
choices are: English, Spanish, French, German, Italian,  
Swedish and Norwegian.  
Fish Symbols When the Fish Symbols are turned off, fish are displayed as  
arches. (This represents the way the beam from the trans-  
ducer is returned from a fish.) When the Fish Symbols are  
turned on, detected fish are shown as symbols. A number  
above the symbol shows the depth of the fish. The unit  
produces eight different sizes of symbols. The size which  
appears depends on the strength of the return from the fish.  
(For more information, see the section on “Fish Indications.”)  
White Line  
This feature controls the way the unit displays strong and  
weak echoes. When the White Line feature is turned off, all  
of the echoes are displayed in black. When the feature is  
turned on, the upper layer of the bottom structure is shown  
as a black line. Strong echoes are displayed using a  
crosshatch (or “checkerboard”) pattern. A weaker return is  
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shown using a more solid area of black or gray. This  
feature helps to show the difference between the strong  
echo from the bottom and the weaker echoes from fish or  
weeds near the bottom. The image shown in Fig. 3-4 is  
presented with the White Line feature turned on.  
VRM  
“VRM” means “Variable Range Marker.” On this unit, the  
VRM feature offers a way of finding the depth of an object  
on the display. When used with the FishFinder Page, the  
VRM feature creates a horizontal line across the display.  
Using the  
and V arrows on the Page Control Pad, you  
can move this line up or down on the display. As the line  
moves, a number shows the depth indicated by the line. By  
moving the line so that it covers a particular target on the  
display, you can find the depth of that target. When the  
Bottom Lock Mode is turned on, the VRM line measures a  
distance up from the bottom. When the optional Sidelooker  
Mode is in use, there may be two vertical VRM lines - one  
to either side of the centerline. You can move these lines  
toward or away from the centerline using the  
and V  
controls on the Page Control Pad. Keep in mind that if  
Zoom is set to Manual, the VRM on the FishFinder Page is  
linked to the Zoom adjustment. That is, they are adjusted  
together using the  
and V controls.  
Sidelooker  
Speed Cal  
This item is used with the optional “Sidelooker” transducer.  
This type of transducer sends sound waves out to the sides  
of the boat. See Fig. 3-9. If you have installed this  
transducer, use this entry in the System Setup Menu to turn  
on the Sidelooker feature.  
This unit can detect and display the speed of the boat  
through the water. It also uses the speed information to  
calculate the distance traveled (the “log”). The item for  
Speed Cal allows you to adjust the speed reading to make  
it match your actual speed through the water. It presents a  
reading in percentage points. A reading of 100% means  
the speed readings from the factory default calibration are  
accurate, and the unit does not need any correction. If the  
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unit says that you are moving faster than you really are, you  
can adjust the Speed Cal figure to a smaller number. If the  
unit says that you are moving slower than your actual  
speed, use a larger number for Speed Cal. The setting can  
range between 75 and 125. Use the < and > controls to  
change the value. For more information, see the section on  
“Calibrating the Sensors.”  
Temp Cal  
This unit can display the water temperature. You may want  
to fine-tune the signal from the transducer to get an  
accurate display. The displayed number indicates an offset  
added to the measured temperature. (This offset will be  
measured in °F or °C, depending on the setting used for  
Temp Units.) For example, if the temperature reading on  
the FishFinder Page tends to read 2°F too high, you can  
correct for this by setting Temp Cal to -2.0°. The setting  
can range between -9.9° and +9.9°. Use the < and >  
controls to change the value.  
Depth Digits This item sets the size of the digits used to show the bottom  
depth on all of the display pages except for the Window and  
Digital Pages. The “STD.” (standard) setting will display  
digits which are 7 mm tall, and the “LARGE” setting will  
display digits which are 15 mm tall. Use the < and >  
controls to change the setting.  
Shallow Alarm  
You can set an alarm to trigger whenever the boat moves  
into water which is shallower than a limit you set. Use the  
and V controls to move to the line for Shallow Alarm  
and use the > control on the Page Control Pad to turn this  
item on. Once you do this, the display will ask which depth  
you want to use as a limit. Use the < and > controls to set  
the limit you want. When the shallow alarm is set, the letter  
“S” will appear in the upper left-hand corner of the normal  
displays. If you move into shallow water and trigger the  
alarm, the letter “S” will begin to flash, and the buzzer will  
CLEAR  
sound. Press the  
button to silence the buzzer. The  
letter “S” will continue to flash until you move into  
deeper water.  
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To turn this feature off, press the < control until the display  
indicates zero feet, fathoms or meters. When these values  
are displayed in the Shallow Alarm “pop up” window, you  
will notice that the menu item in the System Setup Menu  
will read “Off.”  
Deep Alarm An alarm can be set to trigger whenever the boat moves  
into water which is deeper than a preset limit. Use the  
and V controls to move to the line for Deep Alarm and  
use the > control to turn this item on. Once you do this, the  
display will ask which depth you want to use as a limit. Use  
the < and > controls to set the limit you want. When the  
deep alarm is set, the letter “D” will appear in the upper left-  
hand corner of the normal displays. If you move into deep  
water and trigger the alarm, the letter “D” will begin to flash,  
CLEAR  
and the buzzer will sound. Press the  
button to  
silence the buzzer. The letter “D” will continue to flash until  
you move into shallower water.  
To turn this feature off, press the > control on the Page  
Control Pad until the display indicates 2500 feet, 450  
fathoms, or 800 meters. When these values are displayed  
in the Deep Alarm “pop up” window, you will notice that the  
menu item in the System Setup Menu will read “Off.”  
Note:You may want to use both the Shallow Alarm and  
Deep Alarm features when you are anchored. Set the limits  
just a bit to either side of your anchor depth. When set this  
way, the unit will trigger an alarm if the anchor drags and  
the boat moves into shallower or deeper water.  
Fish Alarm  
This unit has an alarm which will trigger when the unit  
detects a fish. Use the < and > controls to turn this item on  
or off. (The Fish Alarm feature will work even if the fish  
symbols are turned off.)  
When the Fish Alarm is set, the fish symbol will appear in  
the upper left-hand corner of the normal displays.  
If the Fish Alarm is triggered, the fish symbol will flash and  
the buzzer will sound (if it has been activated). If the unit is  
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operating with dual frequencies, the buzzer will produce two  
tones—one right after the other. If a fish has been detected  
by the 200 kHz beam, a high tone will be followed by a  
lower tone. If the fish is detected by the 50 kHz beam, the  
low tone will sound first, followed by the higher one.  
Buzzer  
A buzzer can be set to sound when any of the alarm  
conditions occurs (shallow, deep, or fish alarm). For the  
shallow or deep alarms, the “S” or “D” symbol at the top of  
CLEAR  
the screen flashes. By pressing the  
button, you can  
silence the buzzer for the current alarm condition. The  
“S” or “D” symbol will continue to flash as long as the alarm  
condition is still present.  
If the alarm condition occurs again, the buzzer will sound  
again. (For example, this would happen if, after a shallow  
alarm you moved into deep water, then returned to shallow  
water.) You can silence the buzzer again by pressing the  
CLEAR  
button.  
The Buzzer entry in the System Setup Menu can be set in  
three possible ways. Use the < and > controls to make  
your choice.  
When the Buzzer entry is set to Off, the buzzer is silenced  
for all of the alarms. Once you choose the “Off” setting, the  
buzzer symbol at the top of the screen will appear hollow.  
If the Buzzer is turned off, and a shallow alarm or deep  
alarm occurs, the “S” or “D” symbol will flash, but the  
buzzer will not sound. You can enable the buzzer again at  
any time by calling up the System Setup Menu, going to the  
line for Buzzer, and turning the item on again. Once you do  
this, the buzzer symbol at the bottom of the screen will  
appear solid.  
When the Buzzer entry is set to Alarm, the buzzer will work  
with the alarm functions only. The unit will not sound a  
short “beep” when you press a button.  
When the Buzzer line is set to On, the buzzer will  
respond to alarms, and will sound a “beep” each time  
you press a button.  
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Depth Units This item sets the units used by the depth display. You can  
choose feet (FT), fathoms (FA), or meters (M). Use the  
< and > controls to make your choice.  
Speed Units This item sets the units used by the speed display. The  
same units are used for the distance (“log”) display. There  
are three choices:  
Code  
log  
Units used for speedUnits used by  
MPH  
Miles per hour  
Knots  
Statute miles  
Nautical miles  
Kilometers  
KTS  
KPH  
Kilometers per hour  
Temp Units This item sets the units used by the temperature display.  
You can choose Fahrenheit degrees (°F) or Celsius  
degrees (°C). Use the < and > controls to make your  
choice.  
Speed  
A speed indication appears on all of the normal displays. If  
you do not want to see this item, you can turn it off using  
this line of the System Setup Menu. Use the < and >  
controls to make your choice. (The value for Speed will still  
appear on the Window and Digital Pages.)  
Log  
On all of the normal displays, an entry for “log” indicates the  
distance traveled. You can turn off this item using this line  
of the System Setup Menu. Use the < and > controls to  
make your choice. (The value for Log will still appear on  
the Window and Digital Pages.) Notice that the units used  
by the log are set by changing the entry for Speed Units.  
Temp  
An entry for temperature appears on all of the normal  
displays. You can turn this item off using this line of the  
System Setup Menu. Use the < and > controls to make  
your choice. (This item will still appear on the Window and  
Digital Pages.)  
CLEAR  
If you are done with your setup changes, press the  
to the normal display.  
button to go back  
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Setup Menus for Zoom Mode  
The “Zoom” setup menus allow you to customize the Zoom feature to your  
particular application. When the unit is in the Zoom Mode, these two menu  
items are added to the existing Setup Menu of the Page currently se-  
SETUP  
lected. Just press  
while in the Zoom Mode, and scroll through the  
menu items until you see the menu item you want to use.  
Zoom Select Menu  
Fig. 4-10  
Zoom Select  
Menu Item  
The Zoom Select Menu allows you to set the Zoom magnification and  
select Auto or Manual Zoom.  
Zoom magnification  
Use the < and > arrows of the Page Control Pad to select  
CLEAR  
x2, x4, x6, or x8 Zoom magnification. Press  
to return  
to the normal display or press the V arrow of the Page  
Control Pad to select Auto or Manual Zoom.  
Auto zoom  
Once you have set the zoom magnification, you may select  
either Auto or Manual Zoom control. If you select Auto  
Zoom, the FishFinder will automatically control the position  
of the Zoom window. The Auto Zoom control constantly  
tracks the shape of the bottom, and adjusts the position of  
the Zoom window to match any changes in depth. This  
feature is particularly useful when fishing for species of fish  
which stay close to the bottom. Use the < and > arrows of  
CLEAR  
the Page Control Pad to select Auto Zoom. Press the  
button to leave this display, and store the Auto Zoom setting.  
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Manual Zoom  
If you select Manual Zoom, you can choose the position of  
the zoom area yourself. Use the < and > arrows of the  
Page Control Pad to select Manual Zoom.  
Once you make this choice, you can set the zoom area  
yourself. You do this after you exit the Zoom Setup Menu  
Item, and you are looking at the Zoom Mode display itself.  
You can manually move the zoom area up or down by  
pressing the  
and V arrows of the Page Control Pad.  
The location of the zoom area is shown by the dark vertical  
line at the very right-hand edge of the display.  
CLEAR  
If you are done with your setup changes, press the  
button to go back  
to the normal display. To select the next menu item, press the V arrow of  
the Page Control Pad.  
Zoom Screen Split/Full Menu Item  
The Zoom Screen Split/Full Menu Item is available from the FishFinder  
Page or the Window Page when the Zoom Mode is enabled. From the  
Fig. 4-11  
Zoom Screen  
Split/Full  
Menu Item  
Zoom Select Menu (Fig. 4-10), press the V arrow of the Page Control  
Pad. Figure 4-11 shows this next menu item.  
Zoom Split/Full  
This entry indicates whether the zoom image will share the  
display with part of the normal display, or will use the whole  
display area. Use the < and > arrows on the Page Control  
Pad to select the type of zoom display you want.  
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CLEAR  
If you are done with your setup changes, press the  
button to go back  
to the normal display. If you press the V arrow of the Page Control Pad  
at this point, the next menu will be the Range menu shown in Fig. 4-1.  
Setup Menus for Bottom Lock Mode  
The Bottom Lock Setup Menus allow you to customize the Bottom Lock  
feature to your particular application. When in the Bottom Lock Mode,  
these two menu items are added to the existing Setup Menu of the page  
SETUP  
currently selected. Just press  
while in the Bottom Lock Mode and  
scroll through the menu items until the desired menu item is displayed.  
Fig. 4-12  
Bottom Lock  
Range Menu  
Item  
Bottom Lock Range Menu Item  
SETUP  
If you press  
while the unit is displaying the Bottom Lock Mode, you  
will see the setup menu shown in Fig. 4-12.  
Bottom Lock Range  
This range setting controls the maximum depth the unit will  
be able to see. Notice that only manual range control is  
available for the Bottom Lock Mode. Use the < and >  
arrows of the Page Control Pad to select the range you  
want. Here are the choices:  
Possible Bottom Lock Range Settings:  
In feet: 5, 10, 15, 20, 30, 40, 50, 60, 80, 100, 150  
In fathoms: 1, 2, 3, 4, 5, 8, 10, 15, 20, 25, 30  
In meters: 2, 4, 6, 8, 10, 15, 20, 25, 30, 40, 50  
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CLEAR  
If you are done with your setup changes, press the  
button to go back  
to the normal display. To select the next menu item, press the V arrow of  
the Page Control Pad.  
Bottom Lock Split/Full Menu Item  
Fig. 4-13  
Bottom Lock  
Split/Full  
Menu Item  
When you first press the Bottom Lock button, the Bottom Lock information  
will appear in the left-hand part of a split screen. See Fig. 3-15. You can  
also specify a full-screen Bottom Lock display. From the Bottom Lock  
Range Menu Item (Fig. 4-12), press the V arrow of the Page Control  
Pad. Figure 4-13 shows the next menu item.  
Bottom Lock Split/Full  
This entry indicates whether the Bottom Lock image will  
share the display with part of the normal display, or will use  
the whole display area. Use the < and > arrows on the  
Page Control Pad to select the type of Bottom Lock display  
you want.  
CLEAR  
If you are done with your setup changes, press the  
button to go back  
to the normal display. If you press the V arrow of the Page Control Pad at  
this point, the next menu will be the Range menu shown in Fig. 4-1.  
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Setup Menu for Window Page  
You can choose some of the elements which are presented on the Window  
Page. You will recall that you can step to this pages by using the < or >  
controls on the Page Control Pad. See Fig. 3-3.  
Normally, the displays follow in this order:  
•
•
•
•
FishFinder Page (may include Zoom, A-Scope or Bottom Lock Mode)  
>
Window Page  
>
Full-screen Sidelooker Page (if Sidelooker feature is turned on)  
>
Digital Page  
Fig. 4-14  
Digital Setup  
Menu Item  
SETUP  
When you are viewing the Window Page, press  
. The unit will  
present the setup menu shown in Fig. 4-14. The first five options (A  
through E) will appear every time you see this menu. The last three items  
(F through H) only appear when the optional Sidelooker feature is turned  
on. We explained the choices in the material on the Window Page in  
Section 3. (See page 41 and Fig. 3-8.)  
CLEAR  
To make a choice, use the < or > controls, then press  
to save the  
change. Notice that these options only control the information presented  
on the left side of the display. In each case, the right side presents part  
of the normal display. This will include the FishFinder Page, and may also  
use the Zoom, A-Scope, or Bottom Lock Modes.  
Notice that, whenever you use one of the last three options (F, G or H), the  
Digital information disappears. All of the space on the left side of the  
display is taken up by the Sidelooker Mode. See Fig. 4-20.  
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Resetting from the Digital Page  
Two functions can be reset from the Digital Page. These are Elapsed  
Time and Log Reset. When the unit is displaying the Digital Page, press  
SETUP  
the  
button. The unit will present a menu item showing the current  
reading for the log. To reset the log to zero, press the > control on the  
Page Control Pad.  
Press the V control to go to a menu item which shows the elapsed time.  
To reset this item to zero, press the > control on the Page Control Pad.  
(Notice that this is the only way to reset the elapsed time without turning  
the unit off. Normally, both of these items will be reset to zero whenever  
you turn the unit off.)  
Setup Instructions for Sidelooker  
Some installations include the optional Sidelooker transducer. We de-  
scribed the operation of this transducer in Section 3. If your boat has this  
transducer, there are some extra setup steps required.  
The Sidelooker feature must be turned on using the System Setup Menu.  
SETUP  
Figures 4-8 and 4-9 show how to reach this Menu. Press the  
button  
twice to reach the System Setup Menu. Press the V arrow of the Page  
Control Pad to reach the line labeled “Sidelook.” Press the > arrow of the  
CLEAR  
control to turn the feature on. Next, press  
go back to the main display.  
to save the change and  
Once you have turned on the Sidelooker feature, the order of the screens  
changes a bit. You will recall that you can step from one page to the next  
by using the < or > controls on the Page Control Pad. With the Sidelooker  
feature turned on, the displays follow in this order:  
•
Normal or FishFinder Display Page (may include Zoom, A-Scope or  
Bottom Lock Mode)  
>
•
•
•
Window Display Page  
>
Sidelooker Display Page  
>
Digital Display Page  
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Fig. 4-15  
Sidelooker  
Range  
Menu Item  
SETUP  
Press the > control until you see the Sidelooker Page. If you press  
while the Sidelooker Page is visible, the unit will present the menu item  
shown in Fig. 4-15.  
Sidelooker Range Menu Item  
Once the Sidelooker feature is turned on, the FishFinder uses two range  
settings: one for the standard displays, and a second for just the Side-  
looker feature. The menu item shown here sets the range for just the  
Sidelooker. (This will not change the range setting for the other display pages.)  
The range for the Sidelooker uses the Manual setting only. Use the < and >  
controls to select the range you want to use.  
Possible Sidelooker Range Settings:  
In feet: 5, 10, 15, 20, 30, 40, 50, 60, 80, 100, 150  
In meters: 2, 4, 6, 8, 10, 15, 20, 25, 30, 40, 50  
CLEAR  
If you are done with your setup changes, press the  
button to go back  
to the normal display. To select the next menu item, press the V arrow of  
the Page Control Pad.  
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Sidelooker Sensitivity Menu Item  
Fig. 4-16  
Sidelooker  
Sensitivity  
Menu Item  
This menu item allows you to set the sensitivity for the Sidelooker feature  
only. (This will not change the sensitivity setting for the other display  
pages.) Choose Auto or Manual sensitivity. If you choose Manual sensitiv-  
ity, use the < and > arrows of the Page Control Pad to adjust the sensitivity.  
CLEAR  
If you are done with your setup changes, press the  
button to go back  
to the normal display. To select the next menu item, press the V arrow of  
the Page Control Pad.  
Sidelooker Chart Speed Menu Item  
Fig. 4-17  
Sidelooker  
Chart Speed  
Menu Item  
The Chart Speed Menu Item in the Sidelooker Page adjusts the chart  
speed for the Sidelooker display and the FishFinder display. Remember, if  
you adjust the chart speed in any menu, both displays will be affected.  
Using a faster chart speed, there is more space on the display to show a  
given section of the bottom, so the unit can include more detail. Using a  
slower chart speed, this same information is displayed in a smaller vertical  
space. Use the < and > arrows of the Page Control Pad to change the  
chart speed. Making the bar longer increases the chart speed. If you  
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move the bar all of the way to the left, the FishFinder will “freeze” and hold  
the current display. (The depth indicator will continue to update.)  
CLEAR  
If you are done with your setup changes, press the  
button to go back  
to the normal display. To select the next menu item, press the V arrow of  
the Page Control Pad.  
Sidelooker View Menu Item  
Fig. 4-18  
Sidelooker  
View Menu  
Item  
When the Sidelooker information is presented as a full-screen display, you  
can decide whether you want to show all of the Sidelooker image, or just a  
part of it. Figure 4-18 shows the menu item which controls this. You can  
decide whether to show only the left half of the Sidelooker image, only the  
right half, or both halves at once. Use the < and > arrows of the Page  
Control Pad to make your choice.  
Display Option Information Shown  
F
Full display, Sidelooker view to port (left)  
G
Split display (vertical), port (left) view on left half and  
starboard (right) view on right half of display  
H
Full display, Sidelooker view to starboard (right)  
CLEAR  
If you are done with your setup changes, press the  
button to go back  
to the normal display. To go back to the Sidelooker Range Menu, press  
the V arrow of the Page Control Pad.  
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Combining Displays  
The FishFinder L470 unit can combine displays in many different ways.  
This allows you to make maximum use of the display area, and choose  
only the information you really want. Here are some of the ways the  
images can be combined.  
Dual-frequency split screen –  
If you choose this setup, the unit produces a horizontal split across the  
screen. The image on the upper half of the display is produced by the 200  
kHz transducer element, and the image on the lower half is produced by  
the 50 kHz transducer element.  
Notice that you can combine the dual frequency feature with any of the  
normal displays—the FishFinder Page by itself, or with the Zoom, A-  
Scope, or Bottom Lock Modes. In Fig. 4-19, the A-Scope Mode has been  
combined with the dual-frequency feature.  
Fig. 4-19  
Split FishFinder  
Page with  
A-Scope Mode  
Window Page –  
If you begin at the standard FishFinder Page and press the > control, the unit will  
present a Window Page. Figure 3-7 shows an example. Notice that there is a  
vertical split down the center of the screen. The Digital information takes over  
the left half of the display. The other half is occupied by one of the normal  
displays—the FishFinder Page by itself, or with the Zoom, A-Scope or Bottom  
Lock Mode. Notice that, if you have specified a “split” image for either the Zoom  
or Bottom Lock Mode, the image on the right side will be divided vertically again.  
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Fig. 4-20  
Window Page  
with Option G  
Selected and  
Zoom Enabled  
Window Page with Sidelooker –  
You can combine a Sidelooker view with the Window Page display. Figure  
4-20 shows an example where the Sidelooker view has been combined  
with the Zoom Mode in the Window Page. Notice that, again, the display  
is split vertically down the middle. There is another vertical division  
between the parts of the Zoom display. To reach this view, press the  
< or > control on the Page Control Pad until the Window Page is dis-  
SETUP  
played. Press the  
button. Press V until you see the Window Menu  
Item. If the Sidelooker is enabled, Window options A through H will be  
available. Select F, G, or H to specify a Sidelooker window, and press  
CLEAR  
ZOOM  
. Next, press  
. The unit will present the FishFinder, Sidelooker,  
and Zoom information on the same screen.  
Resetting the Unit to Factory Defaults  
It is easy to reset all of the settings on the FishFinder at the same time.  
CLEAR  
PWR  
When the unit is off, hold the  
button. Press the  
button to turn on  
PWR  
the unit. (Release the  
button first; then, one to two seconds later,  
CLEAR  
release the  
button.) All of the settings will be reset to the values  
listed below, and the trip log will be reset to zero.  
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Default Settings  
When the FishFinder is new, it uses a number of preset “default” settings.  
Here is a list:  
Function  
Range  
Default - US model Default - Europe model  
Auto  
Auto  
Sensitivity  
Chart Speed  
Frequency  
Simulator  
Language  
Fish symbols  
White line  
VRM  
Auto  
Auto  
3 (fast)  
3 (fast)  
Auto (200 kHz)  
Auto (200 kHz)  
Off  
Off  
English  
On  
English  
On  
On  
On  
Off  
Off  
Sidelooker  
Off  
Off  
Speed calibration 100  
100  
0.0  
Temp. calibration  
Depth digits  
Shallow alarm  
Deep alarm  
Fish alarm  
0.0  
Std.  
Off  
Std.  
Off  
Off  
Off  
Off  
Off  
Buzzer  
On  
On  
Depth units  
Speed units  
FT (feet)  
M (meters)  
MPH (miles per hour) KPH (kilometers per hour)  
Temperature units °F (Fahrenheit)  
°C (Celsius)  
Speed display  
Log display  
On  
On  
On  
On  
On  
On  
Temp. display  
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5 – Maintenance and Troubleshooting  
Periodically check the display unit, cable, and transducer. Be sure all  
components are free of corrosion and are securely mounted. Check all  
cables for signs of chafing or abrasion. Be sure all of the connections to  
the boat’s DC power and ground system are clean and tight.  
Cleaning Instructions  
Always keep the display unit clean. Use a soft, clean cloth to wipe off the  
display panel. Do not use abrasive cleansers, chemical cleaners or  
solvents. Use a glass cleaner or a suitable general-purpose detergent.  
If you operate your boat in salt water, you will have to protect the hull with  
antifouling paint. Use caution when sanding or cleaning the outside of the  
hull near the transducer. Harsh cleaning solvents such as acetone may  
damage the transducer.  
Sea growth can collect quickly on the bottom of the transducer. This can  
reduce the performance in just a few weeks. To prevent this, coat the  
bottom of the transducer with a thin layer of paint. Use only a water-based  
antifouling paint, or a water-based paint specifically designed for transduc-  
ers. Apply it with a brush.  
If your transducer becomes fouled or stops working because of sand or  
sea growth, use a stiff brush to clean it. You may sand the surface with a  
fine-grit wet or dry sandpaper (#320 grade or finer), but this will affect the  
performance of the unit when the boat is moving at higher speeds.  
The paddle wheel mechanism may become jammed by dirt or grit. Work this  
out of the mechanism, then clean the unit with soap and water or alcohol.  
Troubleshooting Suggestions  
If the unit is not working correctly, there may be a simple cause. Before  
you call for service help, please check these points:  
The FishFinder display unit will not turn on –  
1. The unit may actually be operating, but the contrast may have been  
set to the “full light” or “full dark” setting. With the unit turned off, hold  
PWR  
CLEAR  
the  
button. When you press  
to turn the unit on, all settings  
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will change to the factory defaults. See the default settings on  
page 82.  
2. If the power wiring includes a fuse, it may be blown. Also check the  
circuit breaker or main battery switch.  
3. You may have reversed the power connections. Follow the DC power  
lines all the way back to the battery. The red wire should connect to  
the positive terminal (+) on the battery or power source, and the black  
wire should connect to the negative terminal (-) (also called “ground”  
or “earth”). If the polarity is not correct, reconnect the leads properly  
and check again.  
4. The battery or DC power source may not be producing the correct  
voltage. The FishFinder needs at least 10.8 volts to operate. If the  
voltage is lower, check for loose or corroded connections, or a  
problem with the power source.  
The display unit “freezes” (temporarily or permanently) –  
1. Check that the display has not been stopped using the Chart Speed  
Menu Item. (If the adjustment bar is moved all of the way to the left,  
the display will freeze.)  
2. A source of electrical “noise” may be interfering with the unit’s  
operation. Both the transducer cable and the power cable for the  
FishFinder should be routed as far as possible from all other wiring on  
the boat.  
To locate the source of the noise, turn on the FishFinder. Next, turn  
on each electrical device on the boat, but just supply power to one  
device at a time. This may reveal the cause of the problem. Move  
the FishFinder, the other unit, or the wiring. A movement of just a few  
inches can make a big difference. If it is necessary to cross any  
wires, make the crossing at a right angle.  
Start the motor in neutral and increase the RPM speed. This can  
reveal a problem with the wiring for the boat’s ignition, alternator, or  
tachometer. It may help to use resistor-type spark plugs or spark plug  
cables on the boat’s motor. You can also try a noise-suppression filter  
on the alternator.  
3. One of the wiring connections may be loose. All of the connections  
should be clean, tight, and insulated. Soldering is the best way of  
making these connections. Protect each connection with a piece of  
shrink-wrap tubing.  
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4. The transducer cable may be damaged. Check for any point where  
the wiring may be pinched or bent. Look for signs that water has  
gotten into the cable. If the transducer cable is damaged, the  
transducer and cable should be replaced as a unit. Contact  
Raymarine for instructions.  
The display unit does not see the bottom or fish –  
1. Be sure the display unit is not using the Simulation mode (If this is the  
case, the word “Simulation” will flash on the display.)  
2. On a unit with the transom-mount transducer, the transducer may  
have “kicked up” because it hit an obstruction. See Fig. 2-4. Move  
the transducer down into the working position.  
3. The unit may be set for Manual sensitivity, and be using a very low  
sensitivity setting. To reset all of the values to the factory defaults,  
PWR  
CLEAR  
hold the  
button, and press  
to turn the unit on. See the  
default settings on page 82.  
4. The transducer may not be vertical. Be sure that the transducer is  
aiming straight down, or within 10° of vertical.  
5. If the transducer is an in-hull type, be sure that it is installed correctly.  
The transducer should be “looking” through just one layer of fiber-  
glass hull material, no more than 1" (25 mm) thick. The transducer  
should be firmly attached to the hull using the correct type of adhe-  
sive/sealant.  
6. The face of the transducer may be covered or fouled. Use a stiff  
brush to clean it. You may also sand the surface with a fine-grit wet  
or dry sandpaper (#320 grade or finer), but this will affect the perfor-  
mance of the unit when the boat is moving at higher speeds.  
7. If the FishFinder is using the Auto Sensitivity setting, it may be  
reacting to an increase in electrical “noise.” As the level of noise  
increases, the sensitivity automatically adjusts, and the unit can lose  
its ability to see the bottom or fish. Check for problems with the wiring  
as described in the section on “Display unit freezes.”  
8. The voltage from the power source may be low. This affects the  
transmitting power of the FishFinder. Check the connections as  
described in the section on “The display unit freezes.”  
The FishFinder does not display fish arches –  
1. Be sure the Fish Symbol feature is turned off. See the instruc-  
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tions for the System Setup Menu.  
2. The FishFinder will not display arches unless the boat is moving. If  
the boat is stopped, fish will appear on the display as straight lines.  
3. The transducer may not be aimed straight down. In order to display  
complete arches, the transducer must be vertical.  
4. The sensitivity setting may not be high enough. Go to the Setup  
Menu, choose Manual Sensitivity, and increase the sensitivity.  
The display disappears or is unreliable when the boat is moving at  
high speeds –  
1. Increased turbulence around the transducer may be “confusing” the  
unit. Move the transducer to a location where there is less turbulence  
when the boat is moving.  
2. If the FishFinder is using the Auto Sensitivity setting, it may be  
reacting to an increase in electrical “noise.” As the level of noise  
increases, the sensitivity automatically adjusts, and the unit can lose  
its ability to see the bottom or fish. Check for problems with the  
wiring as described in the section on “The display unit freezes.”  
The display unit shows lots of background “noise” –  
1. The unit may be set to use the manual sensitivity adjustment, and the  
sensitivity may be set too high. See the information on “Setup  
Instructions.”  
2. The transducer may be mounted incorrectly, or may be fouled. Check  
the mounting as described in Section 2. Clean the transducer as  
described earlier in this section.  
The depth setting flashes often –  
Note: Normally, this indicates that the bottom has moved out of range.  
1. The transducer may not be installed correctly, or the signal may not  
be reaching the display unit. Recheck the instructions in “Mounting  
the Transducer” in Section 2. Check the transducer cable for signs of  
damage. If the cable is damaged, the transducer and cable should be  
replaced as a unit.  
2. The voltage reaching the unit may be low, and this may be affecting  
the transmitting power. Check for problems with the wiring as  
described in the section on “The display unit freezes.”  
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The speed or log readings are wrong –  
1. The paddle wheel on the transducer may be fouled. Clean the parts  
as described in the section on “Cleaning Instructions.”  
2. Check the speed calibration. Use the item for “Speed Cal” on the  
System Setup Menu. See the instructions in Section 2.  
Servicing a Thru-Hull Transducer  
If your boat has a thru-hull transducer, you can service it without removing  
the boat from the water. The sensor(s) are mounted in a cylindrical plug  
in the center of the transducer assembly. If necessary, you can remove  
this plug by working from the inside of the boat. The transducer housing  
includes a check valve to minimize the water intrusion when removing the  
insert. A small amount of water will enter the boat. This is normal. Immedi-  
ately after removing the speed insert, place the dummy insert in the  
transducer housing. Do not leave the transducer without the speed or  
dummy insert in place.  
How to Contact Raymarine  
For marine product and services information  
Visit the Raymarine World Wide Web site for the latest information on the  
newest Raymarine electronic equipment and systems:  
www.raymarine.com  
For accessories and parts  
Many Raymarine accessory items and parts can be obtained directly  
from your authorized Raymarine dealer. However, if you are in need  
of an item not available from the retailer, please contact Raymarine  
Customer Service at 1-800-539-5539, extension 2333 or (603) 881-  
5200, extension 2333. Customer Service is available Monday through  
Friday, 8:15 a.m. to 5:00 p.m. Eastern Standard Time or Eastern  
Daylight Savings Time.  
If placing an order, please have the Raymarine item or part number  
ready when calling. (See the Optional Accessory List on page 2 in this  
manual.) If you are not sure which item is appropriate for your unit,  
you should first contact the Technical Support Department at 1-800-  
539-5539, extension 2444 to verify your requirements.  
Maintenance and Troubleshooting  
87  
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For technical support  
Please call 1-800-539-5539, extension 2444 or (603) 881-5200, extension  
2444. The Raymarine Fax number is 1-603-634-4756.  
Our Technical Support Specialists are available to answer questions about  
installing, operating, and troubleshooting all Raymarine products. Ques-  
tions may be addressed directly to our Technical Support Department via  
the Internet at:  
[email protected]  
For product repair service  
In the unlikely event your Raymarine unit should develop a problem,  
please contact your authorized Raymarine dealer for assistance. The  
dealer is best equipped to handle your service requirements, and can offer  
timesaving help in getting the equipment back into normal operation.  
In the event that repairs cannot be obtained conveniently, product service  
may also be obtained by returning the unit to Raymarine’s Product Repair  
Center using the prepaid shipping tag supplied with the unit. Return the  
unit to:  
Raymarine Product Repair Center  
22 Cotton Road, Unit D  
Nashua, NH 03063-4219-USA  
The Product Repair Center is open Monday through Friday, 8:15 a.m. to  
5:00 p.m. Eastern Standard Time or Eastern Daylight Savings Time. All  
products returned to the Repair Center are registered when they arrive. A  
confirmation letter will be sent to you acknowledging the repair status and  
listing the product’s reference number. Should you wish to inquire about  
the repair status of your unit, contact the Product Repair Center at 1-800-  
539-5539, extension 2118. Please have the product reference number or  
unit serial number ready when you call. We will do everything possible to  
repair the unit and return it to you as quickly as possible.  
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Raymarine in Europe  
In Europe, support, service, and accessories are available from  
Raymarine Limited:  
Raymarine Limited  
Anchorage Park, Portsmouth  
PO3 5TD, England  
Tel:  
Fax:  
+44 (0) 23 9269 3611  
+44 (0) 23 9269 4642  
Technical support is available via the Internet. Questions may be sent  
directly to this address:  
[email protected]  
Prepaid Return Service  
The return label included with your Raymarine unit provides free ground  
shipping to our Product Repair Center for all warranty repairs. This  
service is available only to customers within the continental United States.  
To return your Raymarine unit for warranty repair, please follow these  
steps:  
1. Fill out the service information card completely.  
2. Pack your FishFinder and the service information card in a suitable  
shipping container. It is best to use the original carton, if it is avail-  
able.  
3. Fill in your name, address and zip code.  
4. Attach the label to the outside of the shipping carton. Be sure to  
retain the shipping receipt.  
5. Give the package to your nearest shipping outlet, or directly to the  
driver. Your Raymarine unit will be shipped directly to our Product  
Repair Center.  
Maintenance and Troubleshooting  
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6 – Specifications  
General Information  
Display panel  
Panel dimensions  
No. of dots  
FSTN high-contrast LCD  
3.8" H x 3.8" W (96 mm x 96 mm)  
240 x 128  
LCD contrast  
Backlight  
Adjustable, with temperature compensation  
LCD panel, adjustable  
FishFinder Page (standard)  
Window Page  
Operating pages  
Sidelooker Page  
Digital Page  
Performance modes  
Zoom Mode  
A-Scope Mode  
Bottom Lock Mode  
Keys  
Silicon rubber  
Memory backup  
Power source  
Power consumption  
Non-volatile, no battery required  
10.8 to 16.1 V DC  
backlight off - approx. 2.0 W  
backlight on - approx. 4.5 W  
5.3" H (134 mm) x 6.6" W (169 mm)  
x 2.8" D (72 mm)  
Dimensions (w/o bracket)  
Weight  
1.1 lbs (0.5 kg)  
Waterproofing  
EMI resistance  
U.S.C.G., CFR 46  
IEC 945  
Specifications  
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FishFinder Functions  
Range  
Auto or manual  
FT (feet)  
5
50  
10  
60  
15  
80  
400  
20  
30  
40  
100 150 200  
600 800 1000  
250 300  
1500 2000 2500  
FA (fathoms)  
M (meters)  
1
10  
50  
2
15  
60  
3
4
25  
5
30  
8
40  
20  
80  
450  
100 150 200  
250 300  
2
20  
80  
4
25  
100  
6
30  
150  
800  
8
40  
10  
50  
15  
60  
200 300 400  
500 650  
Zoom size  
x2, x4, x6, x8, auto/manual  
Freeze, slow, medium, fast  
On/ Off  
Chart speed  
White line  
Alarms  
Shallow, deep, fish  
0 to 999 units  
Reset distance log  
Fish symbols  
Output power  
Frequency  
8 sizes  
500 W(rms)  
50 kHz, 200 kHz, dual or split operation  
200kHz: 16° @ -6db  
50kHz: 65° @ -6db  
Feet, fathoms, meters  
3 digits  
Transducer beam angle  
Depth units  
Numerical display  
Water temperature  
Boat speed units  
Sensitivity  
32.0 to 99.9°F (0 to 37.0°C)  
Mph, kph, knots (0 to 70)  
Auto or manual  
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Specifications  
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Connector Diagrams  
DC power connector  
Pin 1  
Pin 2  
12V DC (+)  
Ground (-)  
1
2
(Connectors viewed looking  
toward rear of display unit.)  
Transducer connector  
Pin 1  
Pin 2  
Pin 3  
Pin 4  
Pin 5  
Pin 6  
Pin 7  
Pin 8  
Pin 9  
Depth TX+  
Depth TX-  
L Select  
Temp  
7
1
8
2
6
9
4
3
5
R Select  
Speed signal/voltage +  
Shield ground  
+12V (sidelooker)  
L/R receive  
Fig. 6-1  
Connectors  
Specifications  
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Glossary of Terms  
Aft: Near or toward the rear part of the boat (nautical term).  
Background noise: False or meaningless echo returns produced by  
bubbles, water turbulence, or debris  
Bow: The front of the boat (nautical term).  
Cavitation: Air bubbles in the water which affect the readings of a  
transducer. These are normally caused by mounting the transducer  
at an incorrect angle or location.  
Chart Speed: The rate at which echoes scroll across the display.  
Cursor: On a setup display, the place where the unit is ready to make a  
change or enter new information. This point is highlighted. You can  
move up or down the list or display using the  
and V controls.  
Deadrise angle: The slope or angle of the underside of the hull, mea-  
sured in the side-to-side direction.  
Default value: A value or setting which is pre-loaded into the unit at the  
factory.  
Fairing block: A block used when mounting a thru-hull transducer. The  
fairing block shims the transducer to align it on a perfect horizontal  
plane versus the rise of the hull.  
Fathom: A unit of depth equal to 6 feet.  
Frequency: The rate at which a sound source vibrates, or the rate at  
which a sound wave changes.  
Fore: Near or toward the front part of the boat (nautical term).  
Keel: The center of the hull, running from the bow to the stern.  
kHz: “Kilo-Hertz” – a measure of frequency (For example, 200 kHz =  
200,000 oscillations per second.)  
Kick-up bracket: A bracket which is installed on the transom of a boat  
and holds the transducer in place. When the transducer strikes an  
obstruction, it is designed to release or “kick up” out of the water to  
prevent any damage.  
Knot: One nautical mile per hour (1.15 statute miles per hour).  
Glossary  
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LCD: “Liquid Crystal Display” - A technology used to produce flat-panel  
displays.  
Nautical mile: 6076 feet  
Port: Left side of the boat, when facing the bow (nautical term).  
PVDF: “Poly Vinylidene Fluoride” – A unique polymer plastic that has the  
ability to convert sound waves into electrical impulses. PVDF is used  
in the optional Sidelooker transducer for excellent detection of fish in  
the horizontal direction.  
Range: The depth scale for the unit. The maximum distance the unit will  
be able to see at a particular range setting.  
Sensitivity: The ability of a receiver to distinguish between echoes of  
different strengths. In general, use a higher sensitivity setting for  
deep water, and a lower setting for shallow water.  
Starboard: Right side of the boat, when facing the bow (nautical term).  
Statute mile: 5280 ft.  
Stern: The rear of a boat (nautical term).  
Thermocline: A level in the water where two areas of differing water  
temperature meet. Sometimes a thermocline can reflect sonar waves  
and present a false display.  
Transducer: A device which sends and receives high frequency sound  
waves through the water.  
Transom: The rear-most part of the boat’s hull, often a flat panel.  
White Line: A feature used to help display fish near the bottom. This  
feature helps to show the difference between weak returns (including  
fish near the bottom) and strong returns (including the bottom itself).  
Zoom: A way of magnifying or enlarging part of the display to give a  
better view of a section of the water.  
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Limited Warranty Certificate  
Raymarine warrants each new Light Marine/Dealer Distributor Product to be of good materials and  
workmanship, and will repair or exchange any parts proven to be defective in material and  
workmanshipunder normaluse for aperiod of 2 years/24 months from date of sale to end user, except  
as provided below.  
Defects will be corrected by Raymarine or an authorized Raymarine dealer. Raymarine will, except  
asprovided below, acceptlabor cost for a periodof 2years/24 monthsfromthe date of saleto end user.  
During this period, except for certain products, travel costs (auto mileage and tolls) up to 100 round  
trip highway miles (160 kilometers) and travel time of 2 hours, will be assumed by Raymarine only  
on products where proof of installation or commission by authorized service agents, can be shown.  
Warranty Limitations  
RaymarineWarranty policydoes not apply to equipment which has been subjected to accident, abuse  
or misuse, shipping damage, alterations, corrosion, incorrect and/or non-authorized service, or  
equipment on which the serial number has been altered, mutilated or removed.  
Except where Raymarine or its authorized dealer has performed the installation, it assumes no  
responsibility for damage incurred during installation.  
This Warranty does not cover routine system checkouts or alignment/calibration, unless required by  
replacement of part(s) in the area being aligned.  
A suitable proof of purchase, showing date, place, and serial number must be made available to  
Raymarine or authorized service agent at the time of request for Warranty service.  
Consumable items, (such as: Chart paper, lamps, fuses, batteries, styli, stylus/drive belts, radar mixer  
crystals/diodes, snap-in impeller carriers, impellers, impeller bearings, and impeller shaft) are  
specifically excluded from this Warranty.  
Magnetrons, Cathode Ray Tubes (CRT), TFT Liquid Crystal Displays (LCD) and cold cathode  
fluorescent lamps (CCFL), hailer horns and transducers are warranted for 1 year/12 months fromdate  
of sale. These items must be returned to a Raymarine facility.  
All costs associated with transducer replacement, other than the cost of the transducer itself, are  
specifically excluded from this Warranty.  
Overtime premium labor portion of services outside of normal working hours is not covered by this  
Warranty.  
Travel cost allowance on certain products with a suggested retail price below $2500.00 is not  
authorized.When/or ifrepairsarenecessary,theseproductsmustbeforwarded toaRaymarinefacility  
or an authorized dealer at owner’s expense will be returned via surface carrier at no cost to the owner.  
Travel costs other than auto mileage, tolls and two (2) hours travel time, are specifically excluded on  
all products. Travel costs which are excluded from the coverage of this Warranty include but are not  
limited to: taxi, launch fees, aircraft rental, subsistence, customs, shipping and communication charges  
etc. Travel costs, mileage and time, in excess to that allowed must have prior approval in writing.  
TO THE EXTENT CONSISTENT WITH STATEAND FEDERAL LAW:  
(1) THIS WARRANTYIS STRICTLY LIMITED TO THE TERMS INDICATED HEREIN,AND  
NO OTHER WARRANTIES OR REMEDIES SHALL BE BINDING ON RAYMARINE  
INCLUDING WITHOUT LIMITATIONANYWARRANTIES OF MERCHANTABLE OR  
FITNESS FORAPARTICULAR PURPOSE.  
(2) Raymarine shall not be liable for any incidental, consequential or special (including punitive or  
multiple) damages.  
All Raymarine products sold or provided hereunder are merely aids to navigation. It is the  
responsibility of the user to exercise discretion and proper navigational skill independent of any  
Raymarine equipment.  
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