Lowrance electronic Fish Finder X50 DS User Manual

Pub. 988-0151-431  
Fish-Finding Sonar  
Installation and Operation  
Instructions  
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Table of Contents  
Introduction.......................................................................................1  
Capabilities and Specifications: X50 DS ............................................1  
How Sonar Works.................................................................................2  
Preparations .........................................................................................3  
Installation ...........................................................................................4  
Recommended Tools and supplies...................................................4  
Selecting a Transducer Location.....................................................5  
How low should you go? ...................................................................6  
Shoot-Thru-Hull vs. Transom Mounting ........................................7  
Transom Transducer Assembly and Mounting..............................7  
Trolling Motor Bracket Installation..............................................12  
Transducer Orientation and Fish Arches.....................................13  
Shoot-Thru-Hull Preparation........................................................13  
Testing Determines Best Location................................................15  
Shoot-Thru-Hull Installation ........................................................16  
Power Connections (permanent mount only) ...............................17  
Mounting the Sonar Unit: In-Dash, Bracket or Portable............18  
Bracket Installation .......................................................................19  
Portable Sonar Installation...............................................................21  
Installing the Batteries..................................................................22  
Mounting the Unit .............................................................................22  
Portable Transducer Assembly .....................................................23  
Portable Transducer Storage.........................................................25  
Operation..........................................................................................27  
Keyboard Basics .................................................................................27  
Memory ...............................................................................................28  
Menus..................................................................................................28  
Display ................................................................................................29  
Full Chart ...........................................................................................29  
Depth Range.......................................................................................30  
Zoom....................................................................................................31  
Sensitivity...........................................................................................32  
Grayline®.............................................................................................34  
Chart Speed........................................................................................35  
Frequency ...........................................................................................36  
Fish I.D............................................................................................36  
FishTrack™ ........................................................................................38  
Alarms.................................................................................................38  
Fish Alarm..........................................................................................38  
Depth Alarms .....................................................................................39  
Shallow Alarm....................................................................................39  
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Deep Alarm.........................................................................................40  
Battery Alarm.....................................................................................40  
Noise Rejection and ASP................................................................41  
Depth Display.....................................................................................43  
Temperature Display .........................................................................43  
Voltage ................................................................................................44  
Backlight.............................................................................................44  
Contrast ..............................................................................................44  
Simulator ............................................................................................44  
Set Language......................................................................................45  
Software Information.........................................................................45  
Reset Options......................................................................................45  
Troubleshooting..............................................................................46  
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Introduction  
Thank you for buying an Lowrancesonar! Your unit is a high-quality  
sonar designed for both professional and novice fishermen. All  
Lowrance sonars have an automatic mode that finds and displays the  
bottom, fish, underwater structure and more – right out of the box. All  
you have to do is press the on (PWR) key.  
To get started with your Lowrance sonar, first read the installation sec-  
tion. It contains instructions for mounting the sonar unit, the trans-  
ducer and any optional accessories, such as a speed sensor.  
Following recommended installation practices will pay off in optimum  
performance of your Lowrance sonar. Improper installation can cause  
problems down the road, especially if the transducer is badly mounted.  
After you've read the installation instructions, install the unit and ac-  
cessories. Then, read the rest of the manual. The more you know about  
your sonar, the better it will work for you.  
Capabilities and Specifications: X50 DS  
General  
Case size: .........................5.8" H x 4.3" W x 2.5" D (14.7 cm H x 10.8 cm  
W x 6.6 cm D) sealed, waterproof; suitable for  
saltwater use.  
Display: ............................High-contrast Film SuperTwist LCD. Diago-  
nal viewing area: 4" (10.16 cm).  
Resolution: ......................240 pixels (vert.) x 160 pixels (horiz.) resolu-  
tion; 38,400 total pixels  
Backlighting: ..................incandescent backlit screen  
Input power: ...................10 to 17 volts DC.  
Current drain:................170 ma lights off; 240 ma lights on.  
Back-up memory:...........Built-in memory stores sonar settings when  
unit is turned off.  
Sonar  
Frequency: ......................83/200 kHz.  
Transducers:...................A dual search Skimmertransducer with  
built-in temperature sensor is packed with  
your unit. It has a wide fish detection area of  
up to 60º/120º with high sensitivity settings.  
Operates at boat speeds up to 70 mph (61  
kts).  
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Transmitter:....................1,500 watts peak-to-peak power (typical);  
188 watts RMS power (typical).  
Sonar sounding  
depth capability:............1,000 feet (305 meters). Actual capability de-  
pends on transducer configuration and in-  
stallation, bottom composition and water con-  
ditions. All sonar units typically read deeper  
in fresh water than in salt water.  
Depth display: ................Continuous digital readout.  
Audible alarms:..............Deep/shallow/fish.  
Automatic ranging:.......Yes, with instant screen updates.  
Auto bottom track:........Yes.  
Zoom bottom track:.......Yes.  
Split-screen zoom:.........No.  
Surface water temp: .....Yes, built into transducer. Optional external  
temperature sensor or combo speed/temp  
sensor available.  
NOTICE!  
The storage temperature for your unit is from -4 degrees to +167  
degrees Fahrenheit (-20 degrees to +75 degrees Celsius). Extended  
storage in temperatures higher or lower than specified will damage  
the liquid crystal display in your unit. This type of damage is not  
covered by the warranty. For more information, contact the fac-  
tory's Customer Service Department; phone numbers are inside the  
manual's back cover.  
How Sonar Works  
Sonar has been around since the 1940s, so if you already know how it  
works, skip ahead to the next segment on the typographical conventions  
used in this manual. But, if you've never owned a sonar fish finder, this  
segment will tell you the underwater basics.  
Sonar is an abbreviation for SOund NAvigation and Ranging, a technol-  
ogy developed during World War II for tracking enemy submarines. A  
sonar consists of a transmitter, transducer, receiver and display. In  
simple terms, here's how it finds the bottom, or the fish:  
The transmitter emits an electrical impulse, which the transducer con-  
verts into a sound wave and sends into the water. (The sound frequency  
can't be heard by humans or fish.) The sound wave strikes an object  
(fish, structure, bottom) and bounces back to the transducer, which  
converts the sound back into an electrical signal.  
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The receiver amplifies this return signal, or echo, and sends it to the  
display, where an image of the object appears on the scrolling sonar  
chart. The sonar's microprocessor calculates the time lapse between the  
transmitted signal and echo return to determine the distance to the  
object. The whole process repeats itself several times each second.  
Dual Search Transducer  
Your unit is packed with a Dual Search Skimmer Transducer that can  
transmit at 83 kHz and 200 kHz.  
A new innovation, the 83 kHz frequency offers superior sonar perform-  
ance at all depths from very shallow up to 1,000 ft and provides up to  
120º of fishfinding coverage.  
Preparations  
The following shows the recommended sequence for installing the  
transducer:  
CAUTION:  
You should read over this entire installation section before drill-  
ing any holes in your vehicle or vessel!  
1. Determine the approximate location for the sonar unit, so you can  
plan how and where to route the cables for the transducer and power.  
This will help you make sure you have enough cable length for the de-  
sired configuration.  
2. Determine the approximate location for the transducer and its cable  
route.  
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3. Determine the location of your battery or other power connection,  
along with the power cable route.  
4. Install the transducer and route the transducer cable to the sonar  
unit.  
5. Route the power cable from the unit's location to an appropriate  
power source and connect it there.  
6. Connect the transducer/power cable to the unit and mount the sonar  
unit on the bracket.  
Installation  
These instructions will help you install your Skimmertransducer on a  
transom, on a trolling motor or inside a hull. Please read all instructions  
before proceeding with any installation. Your Skimmer transducer typi-  
cally comes packaged with a one-piece stainless steel bracket for mount-  
ing it to the transom of your boat. The trolling motor mount uses a one-  
piece plastic bracket with an adjustable strap.  
These are all "kick-up" mounting brackets. They help prevent damage if  
the transducer strikes an object while the boat is moving. If the trans-  
ducer does "kick-up," the bracket can easily be pushed back into place  
without tools.  
Depending on your sonar unit's connectors, your transducer cable may  
also have the sonar unit's power cable attached to it. If that is the case,  
be sure to install the transducer first, before connecting the power cable  
to a power source. See the instructions later in this manual for connect-  
ing the power cable to a battery or other power supply.  
Read these instructions carefully before attempting the installation.  
Determine which of the mounting positions is right for your boat. Use  
extreme care if mounting the transducer inside the hull, because once  
it is epoxied into position, the transducer usually cannot be removed.  
Remember, the transducer installation is the most critical part  
of a sonar installation.  
Recommended Tools and supplies  
If you prefer the option of routing the cable through the transom, you  
will need a 5/8" drill bit. Each transom mount requires use of a high  
quality, marine grade above- or below-waterline caulking compound.  
NOTE:  
The following installation types also call for these recommended  
tools and required supplies (supplies are not included):  
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Single-frequency transom installations  
Tools include: two adjustable wrenches, drill, #29 (0.136") drill bit, flat-  
head screwdriver (for mounting screws and their pilot holes). Supplies:  
none.  
Single-frequency trolling motor installations  
Tools: two adjustable wrenches, flat-head screwdriver. Supplies: plastic  
cable ties.  
Shoot-through hull installations  
Tools: these will vary depending on your hull's composition. Consult your  
boat dealer or manufacturer. Supplies: 100 grit sandpaper, specially for-  
mulated epoxy adhesive available from LEI (see ordering information  
on the inside back cover). A sandwich hull also requires polyester resin.  
Selecting a Transducer Location  
1. The location must be in the water at all times, at all operating speeds.  
2. The transducer must be placed in a location that has a smooth flow  
of water at all times. If the transducer is not placed in a smooth flow of  
water, interference caused by bubbles and turbulence will show on the  
sonar's display in the form of random lines or dots whenever the boat is  
moving.  
NOTE:  
Some aluminum boats with strakes or ribs on the outside of the  
hull create large amounts of turbulence at high speed. These boats  
typically have large outboard motors capable of propelling the boat  
at speeds faster than 35 mph. Typically, a good transom location on  
aluminum boats is between the ribs closest to the engine.  
3. The transducer should be installed with its face pointing straight  
down, if possible. For shoot-thru applications: Many popular fishing boat  
hulls have a flat keel pad that offers a good mounting surface. On vee  
hulls, try to place the transducer where the deadrise is 10° or less.  
Deadrise less than 10°  
Strakes  
Pad  
Vee pad hull (left); Vee hull (right). A pod style transducer is shown  
here, but the principle is the same for Skimmers inside a hull.  
4. If the transducer is mounted on the transom, make sure it doesn't  
interfere with the trailer or hauling of the boat. Also, don't mount it  
closer than approximately one foot from the engine's lower unit. This  
will prevent cavitation (bubble) interference with propeller operation.  
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5. If possible, route the transducer cable away from other wiring on the  
boat. Electrical noise from engine wiring, bilge pumps and aerators can  
be displayed on the sonar's screen. Use caution when routing the  
transducer cable around these wires.  
CAUTION: Clamp the trans-  
ducer cable to transom near  
the transducer. This will help  
prevent the transducer from  
entering the boat if it is  
knocked off at high speed.  
Good location  
Poor location  
Good  
location  
Good location  
Poor angle  
Good and poor transducer locations.  
How low should you go?  
For most situations, you should install your Skimmer transducer so  
that its centerline is level with the bottom of the boat hull. This will  
usually give you the best combination of smooth water flow and protec-  
tion from bangs and bumps.  
Transom  
Transducer  
centerline  
Hull bottom  
Align transducer centerline with hull bottom.  
There, however, are times when you may need to adjust the transducer  
slightly higher or lower. (The slots in the mounting brackets allow you  
to loosen the screws and slide the transducer up or down.) If you fre-  
quently lose bottom signal lock while running at high speed, the trans-  
ducer may be coming out of the water as you cross waves or wakes.  
Move the transducer a little lower to help prevent this.  
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If you cruise or fish around lots of structure and cover, your transducer  
may be frequently kicking up from object strikes. If you wish, you may  
move the transducer a little higher for more protection.  
There are two extremes you should avoid. Never let the edge of the  
mounting bracket extend below the bottom of the hull. Never let the  
bottom – the face – of the transducer rise above the bottom of the hull.  
Shoot-Thru-Hull vs. Transom Mounting  
In a shoot-thru-hull installation, the transducer is bonded to the inside  
of the hull with epoxy. The sonar "ping" signal actually passes through  
the hull and into the water. This differs from a bolt-thru-hull installa-  
tion (often called "thru-hull"). In that case, a hole is cut in the hull and a  
specially designed transducer is mounted through the hull with a  
threaded shaft and nut. This puts the transducer in direct contact with  
the water.  
Typically, shoot-thru-hull installations give excellent high speed opera-  
tion and good to excellent depth capability.  
There is no possibility of damage from floating objects. It can't be  
knocked off when docking or loading on the trailer.  
However, the shoot-thru-hull installation does have its drawbacks.  
First, some loss of sensitivity does occur, even on the best hulls. This  
varies from hull to hull, even from different installations on the same  
hull. This is caused by differences in hull lay-up and construction.  
Second, the transducer angle cannot be adjusted for the best fish  
arches. This can be a problem on hulls that sit with the bow high when  
at rest or at slow trolling speeds.  
Third, a transducer CAN NOT shoot through wood and metal hulls.  
Those hulls require either a transom mount or a thru-hull installation.  
Fourth, a Skimmer transducer with a built-in temp sensor will show  
only the temperature of the bilge, not the water surface temp.  
Follow the procedure listed in the shoot-thru-hull installation section  
at the end of this lesson to determine if you can satisfactorily shoot  
through the hull.  
Transom Transducer Assembly and Mounting  
The best way to install these transducers is to loosely assemble all of the  
parts first, place the transducer's bracket against the transom and see if  
you can move the transducer so that it's parallel with the ground.  
1. Assembling the bracket. Press the two small plastic ratchets into  
the sides of the metal bracket as shown in the following illustration.  
Notice there are letters molded into each ratchet.  
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Place each ratchet into the bracket with the letter "A" aligned with the  
dot stamped into the metal bracket.  
This position sets the transducer's coarse angle adjustment for a 14°  
transom. Most outboard and stern-drive transoms have a 14° angle.  
Dot  
Align plastic ratchets in bracket.  
2. Aligning the transducer on the transom. Slide the transducer  
between the two ratchets. Temporarily slide the bolt though the trans-  
ducer assembly and hold it against the transom. Looking at the trans-  
ducer from the side, check to see if it will adjust so that its face is par-  
allel to the ground. If it does, then the "A" position is correct for your  
hull.  
If the transducer's face isn't parallel with the ground, remove the  
transducer and ratchets from the bracket. Place the ratchets into the  
holes in the bracket with the letter "B" aligned with the dot stamped in  
the bracket.  
Reassemble the transducer and bracket and place them against the  
transom. Again, check to see if you can move the transducer so it's par-  
allel with the ground. If you can, then go to step 3. If it doesn't, repeat  
step 2, but use a different alignment letter until you can place the  
transducer on the transom correctly.  
Ratchets  
Insert bolt and check transducer position on transom.  
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3. Assembling the transducer. Once you determine the correct posi-  
tion for the ratchets, assemble the transducer as shown in the following  
figure. Don't tighten the lock nut at this time.  
Metal  
washer  
Nut  
Rubber  
washers  
Metal washer  
Bolt  
Assemble transducer and bracket.  
4. Drilling mounting holes. Hold the transducer and bracket assem-  
bly against the transom. The transducer should be roughly parallel to  
the ground. The transducer's centerline should be in line with the bot-  
tom of the hull. Don't let the bracket extend below the hull!  
Mark the center of each slot for the mounting screw pilot holes. You  
will drill one hole in the center of each slot.  
Drill the holes. Use the #29 bit (for the #10 screws).  
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Transom  
Transom  
Position transducer mount on transom and mark mounting holes.  
Side view shown at left and seen from above at right.  
5. Attaching transducer to transom. Remove the transducer from  
the bracket and re-assemble it with the cable passing through the  
bracket over the bolt as shown in the following figures.  
Route cable over bolt and through bracket.  
Side view shown (left) and seen from above (right).  
Attach the transducer to the transom. Slide the transducer up or down  
until it's aligned properly with the bottom of the hull as shown in the  
preceding and following figures. Tighten the bracket's mounting  
screws, sealing them with the caulking compound.  
Adjust the transducer so that it's parallel to the ground and tighten the  
nut until it touches the outer washer, then add 1/4 turn. Don't over  
tighten the lock nut! If you do, the transducer won't "kick-up" if it  
strikes an object in the water.  
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Bottom  
of  
hull  
Deep-"vee" hull  
Flat-bottom hull  
Align transducer centerline with hull bottom  
and attach to transom.  
6. Route the transducer cable through or over the transom to  
the sonar unit. Make sure you leave some slack in the cable at the  
transducer. If possible, route the transducer cable away from other  
wiring. Electrical noise from the engine's wiring, bilge pumps, VHF  
radio wires, cables and aerators can be picked up by the sonar. Use  
caution when routing the transducer cable around these wires.  
WARNING:  
Clamp the transducer cable to the transom close to the  
transducer. This can prevent the transducer from enter-  
ing the boat if it is knocked off at high speed.  
If you need to drill a hole in the transom to pass the connector through,  
the required hole size is 5/8". (If you intend to route an additional speed  
or temp sensor cable through the same hole, you will need a 1" (25.4  
mm) drill bit instead.)  
Caution:  
If you drill a hole in the transom for the cable, make sure it is  
located above the waterline. After installation, be sure to seal the  
hole with the same marine grade above- or below-waterline  
sealant used for the mounting screws.  
7. Make a test run to determine the results. If the bottom is lost at  
high speed, or if noise appears on the display, try sliding the trans-  
ducer bracket down. This puts the transducer deeper into the water,  
hopefully below the turbulence causing the noise. Don't allow the  
transducer bracket to go below the bottom of the hull!  
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Trolling Motor Bracket Installation  
1. Attach the optional TMB-S bracket to the transducer as shown in the  
following figure, using the hardware supplied with the transducer.  
(Note: The internal tooth washer is supplied with the TMB-S.)  
TMB-S bracket  
Internal tooth washer  
Bolt  
Nut  
Flat washer  
Attach motor mounting bracket to transducer.  
2. Slide the adjustable strap supplied with the TMB-S through the slot  
in the transducer bracket and wrap it around the trolling motor.  
Position the transducer to aim straight down when the motor is in the  
water. Tighten the strap securely.  
3. Route the transducer cable alongside the trolling motor shaft. Use  
plastic ties (not included) to attach the transducer cable to the trolling  
motor shaft. Make sure there is enough slack in the cable for the motor  
to turn freely. Route the cable to the sonar unit and the transducer is  
ready for use.  
Transducer mounted on trolling motor, side view.  
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Transducer Orientation and Fish Arches  
If you do not get good fish arches on your display, it could be because  
the transducer is not parallel with the ground when the boat is at rest  
in the water or at slow trolling speeds.  
Partial fish arches  
Transducer aimed  
too far forward  
Transducer aimed  
too far back  
Full fish arch  
Proper transducer angle  
Transducer angles and their effects on fish arches.  
If the arch slopes up – but not back down – then the front of the trans-  
ducer is too high and needs to be lowered. If only the back half of the  
arch is printed, then the nose of the transducer is angled too far down  
and needs to be raised.  
NOTE:  
Periodically wash the transducer's face with soap and water to re-  
move any oil film. Oil and dirt on the face will reduce the sensitiv-  
ity or may even prevent operation.  
Shoot-Thru-Hull Preparation  
Hulls with Flotation Materials  
The transducer installation inside a fiberglass hull must be in an area  
that does not have air bubbles in the resin or separated fiberglass lay-  
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ers. The sonar signal must pass through solid fiberglass. A successful  
transducer installation can be made on hulls with flotation materials  
(such as plywood, balsa wood or foam) between layers of fiberglass if  
the material is removed from the chosen area. See the figure below.  
WARNING:  
Do not remove any material from your inner hull unless  
you know the hull's composition. Careless grinding or  
cutting on your hull can result in damage that could  
sink your boat. Contact your boat dealer or manufac-  
turer to confirm your hull specifications.  
Fill with resin  
Inner hull  
Fill with resin  
Flotation material  
Epoxy to hull first  
Outer hull  
Epoxy the transducer to a solid portion of the hull.  
For example, some (but not all) manufacturers use a layer of fiberglass,  
then a core of balsa wood, finishing with an outer layer of fiberglass.  
Removing the inner layer of fiberglass and the balsa wood core exposes  
the outer layer of fiberglass. The transducer can then be epoxied di-  
rectly to the outer layer of fiberglass. After the epoxy cures for 24  
hours, fill the remaining space with polyester resin. When the job is  
finished, the hull is watertight and structurally sound. Remember, the  
sonar signal must pass through solid fiberglass. Any air bubbles in the  
fiberglass or the epoxy will reduce or eliminate the sonar signals.  
Transducer location (high speed)  
Transducer location (trolling speed)  
Shoot-thru-hull transducer locations for  
high speed or trolling speed operation.  
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Testing Determines Best Location  
Ideally, the shoot-thru transducer should be installed as close to the  
transom as possible, close to the centerline. This will give you the best  
performance during high speed maneuvers.  
1. Anchor the boat in about 30 feet of water. Add a little water to the sump  
of the boat. Plug the transducer into the sonar unit, turn it on, then hold  
the transducer over the side of the boat in the water. Adjust the sensitiv-  
ity and range controls until a second bottom echo is seen on the display.  
(You'll need to turn off Auto Sensitivity, Auto Depth Range and ASP.  
Try a range setting that is two to three times the water depth. The harder  
(more rocky) the bottom, the easier it will be to get a second bottom sig-  
nal.) Don't touch the controls once they've been set.  
True bottom  
Second bottom  
Manual range setting  
Example of a second bottom signal. Unit is in 30 feet of water, with  
range set at 80 feet and sensitivity set at 87 percent.  
2. Next, take the transducer out of the water and place it in the water in  
the sump of the boat, face down. (The transducer face is shown in the  
figure on the following page.) Notice how the signal strength decreases.  
The second bottom signal will probably disappear and the bottom signal  
intensity will likely decrease.  
3. Now move the transducer around to find the best location with the  
strongest possible bottom signal. If you find a spot with an acceptable  
bottom signal, mark the location and move on to step 4.  
If you can't get an acceptable bottom signal, try turning up the sensitivity  
by three or five keystrokes and then move the transducer around once  
more. If you find a spot that works, mark it and move on to step 4.  
If you have to turn up sensitivity by more than five keystrokes to get a  
good signal, the transducer should be mounted on the outside of the  
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hull. This is especially true if you have to turn sensitivity all the way  
up to get a decent bottom signal.  
4. Most people can get good results by following steps 1 through 3, so this  
step is optional. If you want to make an extra effort to be absolutely sure  
that your selected location will work under all conditions, make a test run  
with the boat on plane and observe the bottom signal. You'll need to figure  
some way to prop the transducer into position while you make your test  
run. (A brick or two might be sufficient to hold it in place.)  
5. When you're satisfied with a location, mark it and proceed with  
the installation.  
Shoot-Thru-Hull Installation  
1. Make sure the area is clean, dry and free of oil or grease, then sand  
both the inside surface of the hull and the face of the transducer with  
100 grit sandpaper. The sanded hull area should be about 1-1/2 times  
the diameter of the transducer. The surface of the hull must be flat so  
the entire transducer face is in contact with the hull prior to bonding.  
After sanding, clean the hull and transducer with rubbing alcohol to  
remove any sanding debris.  
Spread epoxy here  
Sand this surface  
Orient the Skimmer  
with the nose facing  
the bow of the boat.  
To bow  
Epoxy transducer to hull.  
WARNING:  
Use only the epoxy available from LEI. It has been for-  
mulated to work with these installation procedures.  
Other epoxy types may be too thin or may not cure to  
the right consistency for optimum transducer perform-  
ance.  
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2. The epoxy consists of the epoxy itself and a hardener. Remove the  
two compounds from the package and place them on the paper plate.  
Thoroughly stir the two compounds together until the mixture has a  
uniform color and consistency. Do not mix too fast or bubbles will form  
in the epoxy. After mixing, you have 20 minutes to complete the in-  
stallation before the epoxy becomes unworkable.  
Spread a thin layer of epoxy (about 1/16" or 1.5 mm thick) on the face of  
the transducer as shown in the previous figure.  
Make sure there are no air pockets in the epoxy layer! Then, apply the  
remaining epoxy to the sanded area on the hull.  
3. Press the transducer into the epoxy, twisting and turning it to force  
any air bubbles out from under the transducer face. Stop pressing when  
you bottom out on the hull. When you're finished, the face of the trans-  
ducer should be parallel with the hull, with a minimum amount of ep-  
oxy between the hull and transducer.  
4. Apply a weight, such as a brick, to hold the transducer in place while  
the epoxy cures. Be careful not to bump the transducer while the epoxy  
is wet. Leave the weight in place for a minimum of three hours. Allow  
the epoxy to cure for 24 hours before moving the boat.  
5. After the epoxy has cured, route the cable to the sonar unit and it's  
ready to use.  
Power Connections  
(permanent mount only)  
The unit works from a 12-volt battery system. You can attach the  
power cable to your boat's accessory or power buss (or directly to the  
battery). If you use an accessory buss but have problems with electrical  
interference, attach the power cable directly to the battery. If the cable  
is not long enough, splice #18 gauge wire onto it.  
CAUTION:  
When using the unit in a saltwater environment, we strongly rec-  
ommend that you shut off the power supply to the power cable  
when the unit is not in use. When the unit is turned off but still  
connected to a power supply, electrolysis can occur in the power ca-  
ble plug. This may result in corrosion of the plug body along with  
the electrical contacts in the cable and the unit's power socket.  
In saltwater environments we recommend you connect the power  
cable to the auxiliary power switch included in most boat designs.  
If that results in electrical interference, or if such a switch is not  
available, we recommend connecting direct to the battery and in-  
stalling an inline switch. This will let you shut off power to the  
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power cable when the unit is not in use. When you are not using  
the unit, you should always shut off power to the power cable, es-  
pecially when the power cable is disconnected from the unit.  
Red wire with  
3 amp fuse  
To unit  
Black wire  
12 volt  
battery  
Power connections for the X50 DS sonar unit  
(direct battery connection shown).  
If possible, keep the power cable away from other boat wiring, espe-  
cially the engine's wires. This will provide the best isolation from elec-  
trical noise. The power cable has two wires, red and black. Red is the  
positive lead, black is negative or ground. Make sure to attach the in-  
line fuse holder to the red lead as close to the power source as possible.  
For example, if you have to extend the power cable to the battery or  
power buss, attach one end of the fuse holder directly to the battery or  
power buss. This will protect both the unit and the power cable in the  
event of a short. It uses a 3-amp fuse.  
Caution:  
Do not use this product without a 3-amp fuse wired into the  
power cable! Failure to use a 3-amp fuse will void your war-  
ranty.  
This unit has reverse polarity protection. No damage will occur if the  
power wires are reversed. However, the unit will not work until the  
wires are attached correctly.  
Mounting the Sonar Unit: In-Dash, Bracket or Portable  
You can install the sonar unit on the top of a dash with the supplied  
bracket. This unit can be installed in a dash with the optional FM-6 in-  
dash adapter kit. The FM-6 kit includes an instruction sheet, part 988-  
0147-631, which contains a template for cutting out the mounting hole.  
web site.  
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Bracket Installation  
Recommended tools for this job include: drill, 1" (25.4 mm) drill bit,  
screwdriver. Required supplies for this job include: high quality, ma-  
rine grade above- or below-waterline caulking compound, three #10  
stainless steel screws. Screw length and type should be suitable for the  
material on which you intend to mount the bracket.  
Mount the unit in any convenient location, provided there is clearance  
when it’s tilted for the best viewing angle. You should also make sure  
there is enough room behind the unit to attach the power/transducer  
cable. (See the following drawings, which show the dimensions of a  
gimbal-mounted X50 DS sonar unit.)  
Holes in the bracket’s base allow wood screw or through-bolt mounting.  
You may need to place a piece of plywood on the back side of thin pan-  
els to reinforce the panel and secure the mounting hardware.  
82.7  
[3.26]  
107.5  
[4.23]  
156  
[6.26]  
12.09 [0.48]  
76.9  
[3.03]  
Millimeter  
[Inch]  
70.3  
[2.77]  
Front view (left) and side view (right) showing dimensions  
of the X50 DS when mounted on quick release bracket.  
Drill a 1" (25.4 mm) hole in the dash for the power/transducer and ac-  
cessory cables. The best location for this hole is immediately under the  
gimbal bracket location. This way, the bracket can be installed so that  
it covers the hole, holds the cables in position and results in a neat in-  
stallation. Some customers, however, prefer to mount the bracket to the  
side of the cable hole — it's a matter of personal preference.  
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After drilling the hole, pass the connectors up through the hole from  
under the dash. If you wish, you can fill in the hole around the cable with  
a good marine caulking compound. (Some marine dealers stock cable hole  
covers to conceal the opening.)  
Using the Quick Release Mounting Bracket  
These units use a quick release mounting bracket. When you run the  
cables through the bracket's cable slots, make sure you allow enough  
slack for tilting the unit and attaching the connector. (The snug fit of  
the push-on waterproof connector requires some force to attach.)  
Align the bracket over the cable hole with the cable slots facing away  
from you and fit the cable through one of the slots. Fasten the bracket  
to the dash using the three screw holes.  
Ratchet  
Rear  
(away from viewer)  
Screw hole  
Power/transducer cable  
Cable slot  
X50 DS quick release mounting bracket. Slots in the base allow routing  
the cable from beneath the mount.  
Attach the unit to the bracket by first connecting the power/transducer  
and accessory cables. Then, hold the sonar unit vertically and slide it  
onto the bracket from above. (The back of the unit should be touching  
the front of the bracket as you lower it into position.) As you push  
down, the unit will lock into place with a distinct click.  
To adjust the viewing angle, pinch the ratchets with one hand, then tilt  
the unit with your other hand. Release the ratchets and the unit locks  
into the new position. To dismount the unit for storage, press the  
ratchets and lift the unit off the bracket.  
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Bracket front  
Mount the sonar: slide the unit onto the bracket from above.  
Depress  
ratchets to  
release  
Adjust viewing angle: use one hand to press and release the spring-  
loaded ratchets while you move the unit with the other hand.  
Portable Sonar Installation  
Like many Lowrance products, the X50 DS sonar is capable of portable  
operation. It uses the optional PPP-12 portable power pack. The power  
pack and portable transducers expand the uses for your sonar.  
You can use your X50 DS sonar unit on your boat or take it to the dock,  
on a float tube, on an ice fishing trip or use it as a second sonar in a  
friend's boat.  
The PPP-12 package includes the power pack, battery adapter and a port-  
able transducer. The transducer can be stored inside the power pack. The  
PPP-12 requires eight AA alkaline batteries. Batteries are not included.  
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To use a portable power pack, you install the batteries and then attach  
the sonar unit to the power pack's bracket. Plug in the  
power/transducer cable and you're ready to fish. The PPP-12 has a  
quick-release mounting bracket built into the case.  
Installing the Batteries  
Open the case and lay it flat. (The latch is located below the handle.)  
Insert eight "AA" size batteries into the battery adapter and place it in  
the battery compartment. Slip the battery cover tabs into the slots in  
the case wall, then close the battery cover with the thumb screw.  
Route this  
cable through  
opening  
Cable slot  
in case wall  
Install batteries in battery compartment (left).  
Attach power cable, and route wires as shown (right).  
Plug the cable's power (dog bone-shaped) connector into the socket on  
the battery compartment cover. Route the cable's unit connector and  
about 6 inches (15.2 cm) of cable through the opening under the sonar  
mount. Close the case bottom, using the slot in the case wall to avoid  
pinching the cable. Turn the unit over to mount the sonar.  
CAUTION:  
When using the sonar in a saltwater environment, we strongly  
recommend that you unplug the power connector from the bat-  
tery socket when the unit is not in use. When the unit is turned  
off but still connected to a power supply, electrolysis can occur in  
the power cable plug. This may result in corrosion of the plug  
body along with the electrical contacts in the cable and the  
unit's power socket.  
Mounting the Unit  
A quick-release mount is built into the top of the portable power pack. To  
attach the unit, first plug in the cable connector. Then, hold the sonar unit  
vertically and slide it onto the bracket from above. (The back of the unit  
should be touching the front of the bracket as you lower it into position.)  
As you push down, the unit will lock into place with a distinct click.  
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Ratchet  
To mount the sonar, slide the unit onto the bracket from above (left).  
To adjust the view, press and release spring-loaded ratchets while tilt-  
ing the unit (right).  
To adjust the viewing angle, pinch the quick-release mount's ratchets  
with one hand, then tilt the unit with your other hand. Release the  
ratchets and the unit locks into the new position. To remove the unit  
from the PPP-12, press the ratchets and lift the unit off the bracket.  
Turn the sonar unit on. If it works, turn it off and finish assembling the  
portable transducer. If it doesn't work, make sure the battery terminals  
are making good contact against the battery contacts. Also make sure  
the batteries are oriented correctly in the battery adapter.  
If it still doesn't work, check the battery voltage. Most complaints we  
hear about portable units result from stale batteries. Make sure you buy  
fresh ones. Always remove batteries from the compartment when storing  
the unit because dead batteries can leak and corrode the contacts.  
In cold weather the efficiency of dry cell batteries drops with the tem-  
perature. We find it a good idea to have the batteries and the sonar  
unit good and warm before we leave home.  
If the batteries do lose a charge, you can sometimes restore them by  
placing them in a warm room or car interior. A better way is to replace  
them with batteries that have been kept warm.  
WARNING:  
Never heat batteries over an open flame or direct hot air  
onto them. A fire or explosion could result.  
Portable Transducer Assembly  
Assemble the transducer and portable bracket as shown in the follow-  
ing illustrations.  
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Make sure there is one washer on each side of the transducer, inside the  
bracket. Slide the other washer over the end of the bolt and screw on the nut.  
Screw the suction cup onto the bracket using the supplied screw and  
flat washer. Tie the nylon cord through the hole in the top of the  
bracket. When using the transducer, tie the other end of the nylon cord  
to the boat. This will help prevent losing the transducer if it comes off.  
Tie  
nylon  
cord  
here  
Screw  
Suction  
cup  
Nut  
Bolt  
Washer  
Washer  
Transducer  
Portable transducer assembly: rear view (left) and side view (right).  
Clean the chosen area of the hull before attaching the suction cup. Lo-  
cate the transducer on the hull as shown in the following figure. Don't  
let the bracket extend below the hull, because water pressure against it  
can cause the suction cup to come off at speed.  
NOTE:  
For optimum operation, the portable transducer should be adjusted  
so that it is parallel to the ground. For more information on this,  
see the segment in the unit's operation manual on Transducer Ori-  
entation and Fish Arches.  
Moisten the suction cup, then press it onto the hull as firmly as possi-  
ble. Tie the nylon cord to the boat and set the power pack and sonar unit in  
a location for easy viewing. Your portable sonar is now ready for use.  
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Hull  
Portable transducer installed on boat transom.  
Portable Transducer Storage  
There is room inside the power pack for the portable transducer. When  
you're finished fishing, tilt the sonar down to the storage position. Open  
the case and lay it flat.  
Unplug the power connector from the battery compartment socket.  
Wrap the transducer cable around the suction cup, then stow the  
transducer on top of the battery compartment cover. Close the case and  
your equipment is ready for transport.  
Stow transducer on top of battery cover.  
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Notes  
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Operation  
Keyboard Basics  
The unit sounds a tone when you press any key. This tells you the unit  
has accepted a command. Numbers in the figure correspond to key ex-  
planations below:  
3
2
1
Lowrance X50 DS.  
1. PWR/CLEAR  
In this manual, the Power/Clear key is referred to as PWR. Press this  
key to turn the unit on and off. It also clears menus and menu selec-  
tions from the screen. To clear a menu from the screen, press PWR.  
NOTE:  
Hold the PWR key down for five seconds to turn off the unit.  
2. MENU UP & MENU DOWN  
These keys appear in the manual text as MENU UP or MENU DOWN.  
Most of the time, you can press either of the menu keys, so in those  
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cases, the text uses the word MENU. Usually, when the instructions say  
MENU, you can press the MENU UP key for consistency.  
The MENU UP key cycles forward through the menus. The MENU DOWN  
key moves backward through the menus. To check out the menus, re-  
peatedly press a MENU key to scroll through them.  
3. UP & DOWN ARROWS (↑ ↓)  
These Up and Down arrow keys are referred to as (DOWN) or (UP) in  
this manual. You will use these keys to adjust most features and functions  
on the X50 DS.  
Memory  
This unit has permanent memory that saves the following user settings  
when power is turned off: Units of Measure, Temp Size, Depth Size, Fish  
I.D. mode, Noise Reject mode, Range mode, Zoom, Sensitivity, Grayline,  
Chart Speed, Battery Alarm, Display Contrast, Backlight, Language,  
Fish Alarm, Battery Alarm and Shallow and Deep alarms. It does not  
require, nor does it use an internal backup battery, so you never have to  
worry about replacement batteries.  
Menus  
This unit's menus will guide you through its various functions and fea-  
tures. Menu names and settings appear in the manual as small capital let-  
ters like SENSITIVITY, which refers to the Sensitivity menu.  
The MENU keys access these features, allowing you to customize unit set-  
tings. To switch menus, press MENU repeatedly. Press PWR to clear menus  
from the screen.  
The Backlight menu with backlight turned on.  
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Display  
The lights will flash for about 10 seconds when the unit is turned on.  
The backlight menu will appear on the screen. Use the ARROW keys to  
turn the backlight on or off. Press PWR to clear the menu from the  
screen.  
The unit will show the Full Chart Page or mode. The Fish I.D.fish  
symbol feature is on by default. The depth range is displayed as the  
upper and lower limit on the left side of the screen. In the following  
figure, the screen shows a depth range from 0 to 80 feet and the bottom  
depth is 36.9 feet, shown by the digital sonar. The water temperature is  
34.5° F.  
Digital depth  
Water Temp  
Surface signal  
Fish symbols  
Bottom signal  
Structure  
or cover  
Depth range  
at bottom of  
depth scale  
Grayline  
Opening screen, Full Chart page, or mode. The factory default setting  
has the Fish I.D. (fish symbols) turned on.  
Full Chart  
The unit's default page, Full Chart shows all echoes scrolling across the  
full screen. The bottom signal scrolls across the screen from right to  
left. The line at the top of the screen represents the surface. The bottom  
depth — determined by the digital sonar — shows in the upper left  
corner.  
If the transducer with a built-in temperature sensor is connected, a  
digital display for water temperature also will be shown. This tempera-  
ture display can be turned on and off.  
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Digital depth  
Surface clutter  
Water Temp  
Bait fish  
Structure  
or cover  
Bottom signal  
Fish arches  
Grayline  
Depth range  
at bottom of  
depth scale  
Full Chart page, showing digital depth (above) and temp (below). The  
Fish I.D. feature is turned off.  
Depth Range  
When turned on, the unit automatically adjusts the depth range ac-  
cording to water conditions. When in auto range mode, it always keeps  
the bottom displayed in the lower portion of the screen. You can over-  
ride the automatic depth range control and manually select a depth  
range.  
To do this, repeatedly press MENU until the DEPTH RANGE menu appears.  
Press to select MANUAL, then press MENU UP to display the RANGE SIZE  
menu. Use the arrow keys to select a desired depth range. When you  
are finished, press PWR to clear the menu from the display.  
This unit has the following depth ranges: 10, 20, 40, 80, 150, 300, 600,  
1000 and 2000 feet.  
Depth Range menu with Manual setting selected (left). Range Size  
menu with 0-80 ft highlighted (right).  
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Zoom  
The zoom feature enlarges all images on the screen by doubling the size  
of the echoes (a 2X zoom). For example, if the current auto depth range  
is 0 to 60 feet, Zoom will show an enlarged view of the water column  
from 30 feet to 60 feet, always keeping the bottom in view.  
To zoom in the display, repeatedly press MENU until the ZOOM menu  
appears. Press to select ON, then press PWR to clear the menu.  
Zoom feature turned off (left). Zoom turned on (right).  
You can tell when the display is in Zoom mode when the top of the depth  
scale on the left of the screen no longer shows zero. For example, if the  
current range is 0 to 80 feet with zoom off, switching to zoom would en-  
large the water column from 40 feet to 80 feet. The number 40 would ap-  
pear at the top of the depth range scale.  
To turn off the zoom feature, repeatedly press MENU until the ZOOM menu  
appears. Press to select OFF, then press PWR to clear the menu. The top  
of the depth range scale returns to zero.  
NOTE:  
Using the Zoom command while in auto Zoom mode will always  
enlarge the echoes near the bottom, because auto Range always  
keeps the bottom displayed in the lower portion of the screen.  
When you choose to use the zoom feature while the unit is in manual  
Depth Range mode, you can select one of 17 pre-set Zoom Ranges. This  
lets you enlarge a desired segment of the water column.  
To do this, make sure Depth Range is set to manual mode. Next, re-  
peatedly press MENU until the ZOOM menu appears. Press to select ON,  
then press MENU UP to display the ZOOM RANGE menu.  
Use the arrow keys to select a desired zoom size. When you are finished,  
press PWR to clear the menu from the display.  
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Enlarged  
fish  
arches  
Zoom Range menu with the 40-80 foot zoom selected.  
You can select from these zoom size ranges: 0-10, 5-15, 10-20, 15-30, 20-  
40, 30-60, 40-80, 50-100, 75-150, 100-200, 150-300, 200-400, 300-600,  
400-800, 500-1000, 750-1500 and 1000-2000.  
Sensitivity  
Sensitivity adjusts the way echoes will be displayed on the screen. If  
you want to see more detail, try increasing the sensitivity, a little at a  
time. There are situations when too much clutter appears on the  
screen. Decreasing the sensitivity can reduce the clutter and show the  
strongest fish echoes, if fish are present. As you change the sensitivity  
setting, you can see the difference on the chart as it scrolls.  
Sensitivity set to manual mode (left). Sensitivity scroll bar (right).  
You can change the sensitivity level whether you are in Auto Sensitivity  
mode or Manual Sensitivity mode. The adjustment method works the  
same in both modes, but gives you slightly different results.  
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To adjust sensitivity in Auto Mode:  
Repeatedly press MENU until the SENSITIVITY menu appears. Make sure sen-  
sitivity is set to Auto, then press MENU UP to access the sensitivity  
scroll bar. Press to increase the sensitivity, to decrease it. When it is set  
at the desired level, press PWR to clear the menu. If you reach the maxi-  
mum or minimum sensitivity level, a tone sounds alerting you to the limits.  
To adjust sensitivity in Manual Mode:  
If you want to change the sensitivity in Manual Mode, turn off Auto  
Sensitivity. Repeatedly press MENU until the SENSITIVITY menu appears.  
Press to select MANUAL, then press MENU UP to access the sensitivity  
scroll bar. Press to increase sensitivity, to decrease it. When it is set at  
the desired level, press PWR to clear the menu.  
Bait  
school  
Fig. 1  
Fig. 2  
Fish  
arches  
Fig. 3  
Fig. 4  
These figures show results of different sensitivity levels on the same  
location. Fig. 1: Sensitivity at 98 percent, determined by Auto Sensitiv-  
ity. Typical of full auto mode. Fig. 2: Sensitivity set at 71 percent. Fig.  
3: Sensitivity set at 47 percent. Fig. 4: Sensitivity set at 100 percent.  
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Grayline®  
Graylinelets you distinguish between strong and weak echoes. It al-  
lows you to tell the difference between a hard and soft bottom. For ex-  
ample, a soft, muddy or weedy bottom returns a weaker signal which is  
shown with a narrow line or no gray line at all. A hard bottom returns  
a strong signal, which will be displayed as a wide gray line.  
Grayline scroll bar.  
If you have two signals of equal size, one with gray and the other with-  
out, then the target with gray is the stronger signal. This helps distin-  
guish weeds from trees on the bottom or fish from structure.  
Grayline is adjustable. Since Grayline shows the difference between  
strong and weak signals, adjusting the sensitivity may also require a  
different Grayline level. The level chosen by the sonar unit at power on  
is usually adequate for most conditions. Experiment with your unit to  
find the Grayline setting that's best for you.  
To change the Grayline level, repeatedly press MENU until the GRAYLINE  
scroll bar appears.  
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Wider  
Thin or no Grayline  
Grayline  
A small amount of Grayline indicates a soft bottom (left), probably  
sand or mud. More Grayline indicates a harder, rocky bottom (right).  
Press to increase Grayline, to decrease it. Echoes scrolling on the  
screen will show the effects of the Grayline adjustment.  
If you reach the maximum or minimum level, a tone sounds alerting  
you to the limits. Press PWR to clear the menu.  
Chart Speed  
The speed at which echoes scroll across the screen is called the chart  
speed. The default for this unit is "max" (100 percent). We recommend  
you leave the scroll speed setting there for most all fishing conditions.  
Chart Speed scroll bar.  
You, however, might consider experimenting with chart speed when  
you are stationary or drifting very slowly. Sometimes, you may achieve  
better images as you decrease the chart speed to match the speed of  
your boat.  
If you are at anchor, ice fishing or fishing from a dock, experiment with  
a chart speed of 25 percent. If you are drifting slowly, try a chart speed  
of 50 percent. When you are stationary and a fish swims through the  
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sonar signal cone, the image appears on the screen as a long line in-  
stead of a fish arch. Reducing the chart speed may result in a shorter  
line that more closely resembles a regular fish return.  
To adjust Chart Speed, repeatedly press MENU until the CHART SPEED  
scroll bar appears. Press to increase the speed of the chart. Press to  
decrease it. Press PWR to clear the menu.  
To return to the original setting, repeat the steps above, but use the  
arrow keys to set the speed to 100% before clearing the menu.  
Frequency  
Your sonar unit can transmit signals at 83 kHz and 200 kHz. The de-  
fault frequency is 200 kHz, best used in shallow water (about 300 feet  
or less). This frequency is the best choice for about 80 percent of the  
fresh and salt water sport fishing applications. When you get into very  
deep salt water, up to 1,000 feet, the 83 kHz frequency will work best.  
The 200 kHz transducer will give you better detail and definition, but  
less depth penetration. You will not get as much detail or definition with  
the 83 kHz frequency, but it has greater depth penetration and up to  
120° of wide fishingfinding coverage. Remember, all sonar units typically  
read deeper in fresh water than in salt water.  
Frequency menu with 200 kHz selected.  
To switch the Frequency, repeatedly press MENU until the Frequency  
menu appears. Press to select 200 KHZ or press to choose 83 KHZ. Press  
PWR to clear the Frequency menu from the screen.  
Fish I.D.  
The Fish I.D.feature displays — as fish — targets that meet certain  
conditions. The microcomputer analyzes all echoes and eliminates sur-  
face clutter, thermoclines and other undesirable signals.  
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The Fish I.D. feature displays symbols on the screen in place of the ac-  
tual fish echoes. There are three symbol sizes: small, medium and  
large. These show the relative size between targets. In other words, it  
displays a small fish symbol when it thinks a target is a small fish, a  
medium fish symbol on a larger target and so forth.  
Fish I.D. is an easier way for a sonar novice to recognize a fish signal  
return when he sees it. But, locating fish by symbol only does have  
some limitations.  
Your sonar unit's microcomputer is sophisticated, but it can be fooled. It  
can not distinguish between fish and other suspended objects such as  
trotlines, turtles, submerged floats, air bubbles, etc. Individual tree limbs  
extending outward from a group of limbs are the hardest objects for the  
Fish I.D. feature to distinguish from fish.  
Fish  
arches  
Fish I.D.  
symbols  
Underwater scene in normal fish arch mode (left). Fish I.D. menu with  
the feature turned on (right).  
To see what is under your boat in maximum detail, we recommend you  
turn off Fish I.D. and begin learning to interpret fish arches.  
You may see Fish I.D. symbols on the screen when actually, there are no fish.  
The reverse is also true — Fish I.D. can actually miss fish that are present.  
Does that mean Fish I.D. is broken? No — the feature is interpreting so-  
nar returns in a specific way to help take some of the work out of reading  
the screen. Remember: Fish I.D. is one of the many tools we provide so  
you can analyze your sonar returns for maximum fish finding informa-  
tion. This and other features can help you "see" beneath the boat under  
varied water and fishing conditions. So, practice with the unit in both the  
Fish I.D. mode and without to become more familiar with the feature.  
This unit's default Fish I.D. setting is on.  
Fish I.D. is most handy when you are in another part of the boat or per-  
forming some task that prevents you from watching the sonar screen.  
Then, you can turn on Fish I.D. and the audible fish alarm. When that  
lunker swims under your boat, you will hear it!  
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Fish I.D. can also be useful when you want to screen out some of the so-  
nar detail gathered by your unit. For example, it can help cut through  
the clutter of suspended bubbles caused by wave action or boat wakes.  
To turn Fish I.D. off, repeatedly press MENU until the FISH ID menu ap-  
pears. Press to select OFF, then press PWR. To turn it back on, repeat  
the above steps, but press to select ON.  
FishTrack™  
The FishTrackfeature shows the depth of a fish symbol when it ap-  
pears on the display. To turn it on, repeatedly press MENU until the FISH  
ID menu appears. Press to select TRACK ON, then press PWR. To turn it  
off, repeat the steps above, but press to select OFF.  
If you want to turn off FishTrack depths but leave Fish I.D. on, press ↓  
to select ON, then press PWR. Remember, Fish I.D. must be on in order  
to use the FishTrack feature.  
Fish I.D. symbols  
showing FishTrack  
depth indicator  
Fish ID menu and symbol with FishTrack on. The fish is 44 feet deep.  
Alarms  
The sonar unit has four types of alarms: fish, shallow, deep and bat-  
tery.  
Fish Alarm  
The Fish Alarm sounds a tone when a fish symbol appears on the  
screen. The Fish I.D. feature must be turned on for fish alarms to work.  
To turn on Fish I.D., repeatedly press MENU until the FISH ID menu ap-  
pears. Press to select ON, then press PWR. Repeatedly press MENU un-  
til the FISH ALARM menu appears. Press to select ON, then press PWR.  
To turn off fish alarm repeatedly press MENU until the FISH ALARM menu  
appears. Press to select OFF, then press PWR to clear the menu.  
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Fish Alarm menu.  
Depth Alarms  
The depth alarms are triggered only by the bottom signal. No other  
echoes will activate these alarms. The depth alarms consist of a shal-  
low and a deep alarm. The shallow alarm sounds an alarm tone when  
the bottom goes shallower than the alarm's setting. The deep alarm  
sounds a tone when the bottom goes deeper than its setting. Both  
alarms adjust the same way, although through different menus.  
Shallow Alarm  
To set the shallow alarm depth, repeatedly press MENU until SHALLOW  
ALARM appears.  
Shallow Alarm menu (left). Shallow Alarm Value Dialog box (right).  
Press to SET VALUE. The Shallow Alarm Value dialog box will appear.  
Use ↑ ↓ to enter the first number in the dialog box, then press MENU  
DOWN to move to the next digit. Repeat those steps until the desired  
depth has been entered in the dialog box. To move the cursor back to  
39  
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any of the previously entered numbers, press MENU UP. Press PWR to  
return to the Shallow Alarm menu. Use to select ON, which will turn  
on the alarm, then press PWR to clear the menu. When the bottom  
depth becomes more shallow than the alarm’s setting, an alarm will  
sound and a message will appear on the screen.  
Press PWR to silence the alarm. It will remain silent until it is trig-  
gered again.  
To turn off the alarm, repeatedly press MENU until the SHALLOW ALARM  
menu appears. Press to OFF, then press PWR to clear the menu.  
Deep Alarm  
To set the deep alarm depth, repeatedly press MENU until DEEP ALARM  
appears.  
Deep Alarm menu (left). Deep Alarm dialog box (right).  
Press the to SET VALUE. The Deep Alarm Value dialog box will appear.  
Use to enter the first number in the dialog box, then press MENU  
DOWN to move to the next digit. Repeat those steps until the desired  
depth has been entered in the dialog box. To move the cursor back to  
any of the previously entered numbers, press MENU UP. Press PWR to  
return to the Deep Alarm menu. Press to select ON, which will turn  
on the alarm, then press PWR to clear the menu. When the bottom  
depth becomes deeper than the alarm’s setting, an alarm will sound  
and a message will appear on the screen.  
Battery Alarm  
To set the battery alarm depth, repeatedly press MENU until BATTERY  
ALARM appears.  
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Battery Alarm menu (left). Low Battery Alarm Value (right).  
Press the to SET VALUE. The Low Battery Alarm Value dialog box will  
appear. Input a voltage value between 7 and 18 volts. Use the ↑ ↓ keys  
to enter the first number in the dialog box, then press MENU DOWN to  
move to the next digit. Repeat those steps until the desired value has  
been entered in the dialog box. To move the cursor back to any of the  
previously entered numbers, press MENU UP. Press PWR to return to  
the Battery Alarm menu. Use to select ON, which will turn on the  
alarm, then press PWR to clear the menu. If the voltage value falls be-  
low the alarm’s setting, the alarm will sound and a message will ap-  
pear on the screen.  
Noise Rejection and ASP  
The ASP(Advanced Signal Processing) feature is a noise rejection  
system built into the sonar unit. It constantly evaluates the effects of  
boat speed, water conditions and electrical interference and automati-  
cally gives you the best display possible under most conditions.  
ASP is an effective tool in combating noise. In sonar terms, noise is any  
undesired signal. It is caused by electrical and mechanical sources such  
as bilge pumps, engine ignition systems, wiring, air bubbles passing  
over the face of the transducer and even vibration from the engine. In  
all cases, noise can produce unwanted marks on the display.  
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Noise Rejection menu.  
The ASP noise rejection feature is especially useful because, typically,  
it lets you operate the boat at all speeds without adjusting the sensi-  
tivity or other controls.  
The ASP feature has three settings — Off, Low and High. When first  
turned on, noise rejection is set on low. If you have high noise levels,  
try using the high ASP setting. If, however, you are having trouble  
with noise, we suggest you take steps to find the interference source  
and fix it, rather than continually using the unit with the high ASP  
setting. There are times when you may want to turn off ASP. This al-  
lows you to view all incoming echoes before they are processed by the  
ASP feature.  
To change the ASP setting, repeatedly press MENU until the NOISE  
REJECTION menu appears. Use ↑ ↓ to select the desired setting, then press  
PWR to clear the menu.  
Depth menu with Depth display turned off (left).  
Depth display set to Large (right).  
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Depth Display  
Depth may be displayed on the screen in a small, medium or large size  
or can be turned off completely.  
To display Depth:  
Repeatedly press MENU until the DEPTH menu appears. Use ↑ ↓ to select  
the size of the depth display. Press PWR to clear the menu.  
Temperature Display  
Temperature may be displayed on the screen in a small or medium size  
or can be turned off completely.  
Temperature menu (left). Temperature display set to small size (right).  
To display Temperature:  
Repeatedly press MENU until the TEMPERATURE menu appears. Use ↑ ↓ to  
select the size of the temperature display. Press PWR to clear the menu.  
Voltage menu with the voltage display turned off (left) and with volt-  
age set to a small display size (right).  
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Voltage  
The Voltage menu allows you to display battery voltage on the screen  
in a small or medium size or can be turned off completely.  
To display battery voltage:  
Repeatedly press MENU until the VOLTAGE menu appears. Use ↑ ↓ to se-  
lect the size of the voltage display. Press PWR to clear the menu.  
Backlight turned on (left). Contrast scroll bar (right).  
Backlight  
The display's backlight allows the unit to be used at night. To turn the  
backlight on or off, repeatedly press MENU until the BACKLIGHT menu  
appears. Press to turn on the light or to turn it off. Press PWR to  
clear the backlight menu from the display.  
Contrast  
The unit’s display contrast is adjustable to suit different lighting condi-  
tions. It will help you see the screen from different angles or at various  
times of the day.  
To adjust the contrast, repeatedly press MENU until the CONTRAST scroll  
bar appears. To decrease screen contrast, press or press to increase  
the contrast. If you reach the maximum or minimum contrast level, a  
tone will sound. Press the PWR key to clear the menu.  
Simulator  
This unit has a built-in simulator that shows a simulated bottom signal  
with fish signals. This lets you practice with the unit as if you were on the  
water; all features and functions of the unit are usable. A message ap-  
pears occasionally to remind you that the simulator is on.  
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Simulator menu (left). Languages menu (right).  
To use the simulator, repeatedly press MENU until the SIMULATOR menu  
appears. Press to turn it on and press PWR to clear the menu. Repeat  
the steps above to turn it off. The simulator automatically will be  
turned off when you power off the unit.  
Set Language  
This unit's menus are available in 11 languages: English, French,  
German, Spanish, Italian, Danish, Swedish, Russian, Czech, Dutch and  
Finnish.  
To select a language:  
1. Repeatedly press MENU until the Languages menu appears.  
2. Use ↑ ↓ to select the desired language. All menus now appear in the  
language you selected. Press PWR to clear the menu from the screen.  
Software Information  
To show the unit's software system information, repeatedly press MENU  
until the SOFTWARE INFORMATION screen appears. Press PWR to clear the  
screen.  
Reset Options  
This command is used to reset all features, options and settings to their  
original factory defaults. This is useful when you have changed several  
settings and want to reset the unit to basic automatic operation.  
First, turn off the unit. Next, press and hold and the MENU DOWN key  
at the same time, then press the PWR key. Release the keys as the unit  
powers up. The unit will turn on with the factory settings restored.  
45  
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Troubleshooting  
If your unit is not working, or if you need technical help, please use the  
following troubleshooting section before contacting the factory cus-  
tomer service department. It may save you the trouble of returning  
your unit for repair. For contact information, refer to the last page, just  
inside the back cover of this manual.  
Unit won't turn on:  
1. Check the power cable's connection at the unit. Also check the wir-  
ing.  
2. Make certain the power cable is wired properly. The red wire con-  
nects to the positive battery terminal, black to negative or ground.  
3. Check the fuse.  
4. Measure the battery voltage at the unit's power connector. It should  
be at least 11 volts. If it isn't, the wiring to the unit is defective, the  
battery terminals or wiring on the terminals are corroded, or the bat-  
tery needs charging.  
Unit turns on only in simulator mode:  
There is a problem with the transducer or the transducer cable. Check  
the cable for damage.  
Unit freezes, locks up, or operates erratically:  
1. Electrical noise from the boat's motor, trolling motor, or an accessory  
may be interfering with the sonar unit. Rerouting the power and trans-  
ducer cables away from other electrical wiring on the boat may help.  
Route the sonar unit's power cable directly to the battery instead of  
through a fuse block or ignition switch.  
2. Inspect the transducer cable for breaks, cuts, or pinched wires.  
3. Check both the transducer and power connectors. Make certain both  
are securely plugged in to the unit.  
Weak bottom echo, digital readings erratic, or no fish signals:  
1. Make certain the transducer is pointing straight down. Clean the  
face of the transducer. Oil, dirt and fuel can cause a film to form on the  
transducer, reducing its effectiveness. If the transducer is mounted in-  
side the hull, be sure it is shooting through only one layer of fiberglass  
and that it is securely bonded to the hull. Do NOT use RTV silicone  
rubber adhesive or Marine-Texepoxy.  
2. Electrical noise from the boat's motor can interfere with the sonar.  
This causes the sonar to automatically increase its Discrimination or  
noise rejection feature. This can cause the unit to eliminate weaker  
signals such as fish or even structure from the display.  
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3. The water may be deeper than the sonar's ability to find the bottom. If  
the sonar can't find the bottom signal while it's in the automatic mode, the  
digital sonar display will flash continuously. It may change the range to  
limits far greater than the water you are in. If this happens, place the unit  
in the manual mode, then change the range to a realistic one, (for exam-  
ple, 0-100 feet) and increase the sensitivity. As you move into shallower  
water, a bottom signal should appear.  
4. Check the battery voltage. If the voltage drops, the unit's transmitter  
power also drops, reducing its ability to find the bottom or targets.  
Bottom echo disappears at high speeds or erratic digital read-  
ing or weak bottom echo while boat is moving  
1. The transducer may be in turbulent water. It must be mounted in a  
smooth flow of water in order for the sonar to work at all boat speeds.  
Air bubbles in the water disrupt the sonar signals, interfering with its  
ability to find the bottom or other targets. The technical term for this is  
cavitation.  
2. Electrical noise from the boat's motor can interfere with the sonar.  
This causes the sonar to automatically increase its Discrimination or  
noise rejection feature. This can cause the unit to eliminate weaker sig-  
nals such as fish or even structure from the display.  
Try using resistor spark plugs or routing the sonar unit's power and  
transducer cables away from other electrical wiring on the boat.  
No fish arches when the Fish I.D. feature is off:  
1. Make certain the transducer is pointing straight down. This is the  
most common problem if a partial arch is displayed.  
2. The sensitivity may not be high enough. In order for the unit to dis-  
play a fish arch, it has to be able to receive the fish's echo from the time  
it enters the cone until it leaves. If the sensitivity is not high enough,  
the unit shows the fish only when it is in the center of the cone.  
3. Use the Zoom feature. It is much easier to display fish arches when  
zoomed in on a small range of water than a large one. For example, you  
will have much better luck seeing fish arches with a 30 to 60 foot range  
than a 0 to 60 foot range. This enlarges the targets, allowing the dis-  
play to show much more detail.  
4. The boat must be moving at a slow trolling speed to see fish arches.  
If the boat is motionless, fish stay in the cone, showing on the screen as  
straight horizontal lines.  
NOISE  
A major cause of sonar problems is electrical noise. This usually ap-  
pears on the sonar's display as random patterns of dots or lines. In se-  
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vere cases, it can completely cover the screen with black dots, or cause  
the unit operate erratically, or not at all.  
To eliminate or minimize the effects of electrical noise, first try to de-  
termine the cause. With the boat at rest in the water, the first thing  
you should do is turn all electrical equipment on the boat off. Make  
sure the engine is also off. Turn your sonar on, then turn off Noise Re-  
ject [also known as the ASP feature (Advanced Signal Processing)].  
Sensitivity should be set at 90-95 percent. There should be a steady  
bottom signal on the display. Now turn on each piece of electrical  
equipment on the boat and view the effect on the sonar's display. For  
example, turn on the bilge pump and view the sonar display for noise.  
If no noise is present, turn the pump off, then turn on the VHF radio  
and transmit. Keep doing this until all electrical equipment has been  
turned on, their effect on the sonar display noted, then turned off.  
If you find noise interference from an electrical instrument, trolling motor,  
pump, or radio, try to isolate the problem. You can usually reroute the  
sonar unit's power cable and transducer cable away from the wiring that  
is causing the interference. VHF radio antenna cables radiate noise when  
transmitting, so be certain to keep the sonar's wires away from it. You  
may need to route the sonar unit's power cable directly to the battery to  
isolate it from other wiring on the boat.  
If no noise displays on the sonar unit from electrical equipment, then  
make certain everything except the sonar unit is turned off, then start  
the engine. Increase the RPM with the gearshift in neutral. If noise  
appears on the display, the problem could be one of three things; spark  
plugs, alternator, or tachometer wiring. Try using resistor spark plugs,  
alternator filters, or routing the sonar unit's power cable away from  
engine wiring. Again, routing the power cable directly to the battery  
helps eliminate noise problems. Make certain to use the in-line fuse  
supplied with the unit when wiring the power cable to the battery.  
When no noise appears on the sonar unit after all of the above tests,  
then the noise source is probably cavitation. Many novices or persons  
with limited experience make hasty sonar installations which function  
perfectly in shallow water, or when the boat is at rest. In nearly all  
cases, the cause of the malfunction will be the location and/or angle of  
the transducer. The face of the transducer must be placed in a location  
that has a smooth flow of water at all boat speeds. Read your trans-  
ducer owner's manual for the best mounting position.  
48  
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LOWRANCE ELECTRONICS  
FULL ONE-YEAR WARRANTY  
"We," "our," or "us" refers to LOWRANCE ELECTRONICS, a division of LEI, the manu-  
facturer of this product. "You" or "your" refers to the first person who purchases this  
product as a consumer item for personal, family, or household use.  
We warrant this product against defects or malfunctions in materials and workmanship,  
and against failure to conform to this product's written specifications, all for one (1) year  
from the date of original purchase by you. WE MAKE NO OTHER EXPRESS  
WARRANTY OR REPRESENTATION OF ANY KIND WHATSOEVER CONCERNING  
THIS PRODUCT. Your remedies under this warranty will be available so long as you can  
show in a reasonable manner that any defect or malfunction in materials or workman-  
ship, or any non-conformity with the product's written specifications, occurred within one  
year from the date of your original purchase, which must be substantiated by a dated  
sales receipt or sales slip. Any such defect, malfunction, or non-conformity which occurs  
within one year from your original purchase date will either be repaired without charge  
or be replaced with a new product identical or reasonably equivalent to this product, at  
our option, within a reasonable time after our receipt of the product. If such defect, mal-  
function, or non-conformity remains after a reasonable number of attempts to repair by  
us, you may elect to obtain without charge a replacement of the product or a refund for  
the product. THIS REPAIR, OR REPLACEMENT OR REFUND (AS JUST DESCRIBED)  
IS THE EXCLUSIVE REMEDY AVAILABLE TO YOU AGAINST US FOR ANY  
DEFECT, MALFUNCTION, OR NON-CONFORMITY CONCERNING THE PRODUCT  
OR FOR ANY LOSS OR DAMAGE RESULTING FROM ANY OTHER CAUSE  
WHATSOEVER. WE WILL NOT UNDER ANY CIRCUMSTANCES BE LIABLE TO  
ANYONE FOR ANY SPECIAL, CONSEQUENTIAL, INCIDENTAL, OR OTHER  
INDIRECT DAMAGE OF ANY KIND.  
Some states do not allow the exclusion or limitation of incidental or consequential dam-  
ages, so the above limitations or exclusions may not apply to you.  
This warranty does NOT apply in the following circumstances: (1) when the product has  
been serviced or repaired by anyone other than us; (2) when the product has been con-  
nected, installed, combined, altered, adjusted, or handled in a manner other than ac-  
cording to the instructions furnished with the product; (3) when any serial number has  
been effaced, altered, or removed; or (4) when any defect, problem, loss, or damage has  
resulted from any accident, misuse, negligence, or carelessness, or from any failure to  
provide reasonable and necessary maintenance in accordance with the instructions of the  
owner's manual for the product.  
We reserve the right to make changes or improvements in our products from time to time  
without incurring the obligation to install such improvements or changes on equipment or  
items previously manufactured.  
This warranty gives you specific legal rights and you may also have other rights which  
may vary from state to state.  
REMINDER: You must retain the sales slip or sales receipt proving the date of your  
original purchase in case warranty service is ever required.  
LOWRANCE ELECTRONICS  
PO BOX 669, CATOOSA, OK 74015  
(800) 324-1354  
49  
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How to Obtain Service…  
…in the USA:  
We back your investment in quality products with quick, expert service  
and genuine Lowrance replacement parts. If you're in the United  
States and you have technical, return or repair questions, please con-  
tact the Factory Customer Service Department. Before any product can  
be returned, you must call customer service to determine if a return is  
necessary. Many times, customer service can resolve your problem over  
the phone without sending your product to the factory. To call us, use  
the following toll-free number:  
800-324-1354  
8 a.m. to 5 p.m. Central Standard Time, M-F  
Lowrance Electronics may find it necessary to change or end our ship-  
ping policies, regulations, and special offers at any time. We reserve the  
right to do so without notice.  
…in Canada:  
If you're in Canada and you have technical, return or repair questions,  
please contact the Factory Customer Service Department. Before any  
product can be returned, you must call customer service to determine if  
a return is necessary. Many times, customer service can resolve your  
problem over the phone without sending your product to the factory. To  
call us, use the following toll-free number:  
800-661-3983  
905-629-1614 (not toll-free)  
8 a.m. to 5 p.m. Eastern Standard Time, M-F  
…outside Canada and the USA:  
If you have technical, return or repair questions, contact the dealer in the country  
where you purchased your unit. To locate a dealer near you, visit our web site,  
50  
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Accessory Ordering Information  
for all countries  
To order Lowrance GPS accessories such as computer cables or MMC  
cards, please contact:  
1) Your local marine dealer or consumer electronics store. Most quality  
dealers that handle marine electronic equipment or other consumer  
electronics should be able to assist you with these items.  
To locate  
a
Lowrance dealer near you, visit our web site,  
www.lowrance.com and look for the Dealer Locator. Or, you can consult  
your telephone directory for listings.  
2) U.S. customers: LEI Extras Inc., PO Box 129, Catoosa, OK 74015-0129  
Call 1-800-324-0045 or visit our web site www.lei-extras.com.  
3) Canadian customers can write:  
Lowrance/Eagle Canada, 919 Matheson Blvd. E. Mississauga, Ontario  
L4W2R7 or fax 905-629-3118.  
Shipping Information  
If it becomes necessary to send a product for repair or replacement, you  
must first receive a return authorization number from Customer  
Service. Products shipped without a return authorization will not be  
accepted. When shipping, we recommend you do the following:  
1. Always use the original shipping container and filler material the  
product was packed in.  
2. Always insure the parcel against damage or loss during shipment.  
Lowrance does not assume responsibility for goods lost or damaged in  
transit.  
3. For proper testing, include a brief note with the product describing  
the problem. Be sure to include your name, return shipping address  
and a daytime telephone number.  
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Visit our web site:  
Lowrance Pub. 988-0151-431  
Printed in USA 032106  
© Copyright 2006  
All Rights Reserved  
Lowrance Electronics, Inc.  
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