User manual EAGLE CUDA 242

Pub. 988-0143-842 www.eaglesonar.com & Cuda 242 Portable Fish-finding and Depth Sounding Sonars Installation and Operation Instructions Copyright © 2006 LEI-Eagle All rights reserved. No part of this manual may be copied, reproduced, republished, transmitted or distributed for any purpose, without prior written consent of Eagle Electronics. Any unauthorized commercial distribution of this manual is strictly prohibited. Eagle® is a registered trademark or LEI. Cuda® 242 is a registered trademarks of LEI. Eagle Electronics may find it necessary to change or end our policies, regulations, and special offers at any time. We reserve the right to do so without notice. All features and specifications subject to change without notice. All screens in this manual are simulated. On the cover: Cuda 242 shown. Other models covered in the manual are similar. For free owner's manuals and the most current information on this product, its operation and accessories, visit our web site: www.eaglesonar.com Eagle Electronics P.O. Box 669 Catoosa, OK USA 74015 Printed in USA. Table of Contents Introduction.......................................................................................1 Specifications: Cuda 242 & Cuda 242 Portable ...........................1 How Sonar Works.................................................................................3 Preparations .........................................................................................4 Installation ...........................................................................................4 Recommended Tools and supplies...................................................5 Selecting a Transducer Location .....................................................6 How low should you go? ...................................................................7 Shoot-Thru-Hull vs. Transom Mounting ........................................8 Transom Transducer Assembly and Mounting ..............................9 Trolling Motor Bracket Installation..............................................15 Transducer Orientation and Fish Arches.....................................16 Shoot-Thru-Hull Preparation ........................................................18 Testing Determines Best Location ................................................19 Shoot-Thru-Hull Installation ........................................................21 Power Connections (permanent mount only) ...............................23 Mounting the Sonar Unit: In-Dash, Bracket or Portable ............25 Bracket Installation .......................................................................25 Portable Sonar Installation ...............................................................28 Installing the Batteries..................................................................29 Mounting the Unit .............................................................................30 Portable Transducer Assembly .....................................................31 Portable Transducer Storage.........................................................33 Operation..........................................................................................35 Keyboard Basics .................................................................................35 Memory ...............................................................................................36 Menus..................................................................................................36 Display ................................................................................................37 Full Chart ...........................................................................................38 Depth Range .......................................................................................39 Zoom ....................................................................................................40 Sensitivity ...........................................................................................42 i Grayline .............................................................................................43 Chart Speed ........................................................................................45 Fish I.D. ...........................................................................................47 FishTrackTM ........................................................................................48 Alarms.................................................................................................49 Fish Alarm ..........................................................................................49 Depth Alarms .....................................................................................50 Shallow Alarm ....................................................................................50 Deep Alarm.........................................................................................51 Battery Alarm.....................................................................................52 Noise Reject and ASP .....................................................................53 Depth Display.....................................................................................54 Temperature Display .........................................................................54 Voltage ................................................................................................56 Units....................................................................................................56 Backlight.............................................................................................57 Contrast ..............................................................................................57 Simulator ............................................................................................58 Set Language ......................................................................................58 Software Information.........................................................................59 Reset Options......................................................................................60 Troubleshooting..............................................................................61 ® ii Introduction Thank you for buying an Eagle sonar! Your unit is a high-quality sonar designed for both professional and novice fishermen. All Eagle 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 Eagle sonar, first read the installation section. It contains instructions for mounting the sonar unit, the transducer and any optional accessories, such as a speed sensor. Following recommended installation practices will pay off in optimum performance of your Eagle 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 accessories. Then, read the rest of the manual. The more you know about your sonar, the better it will work for you. Capabilities and Specifications: Cuda 242 & Cuda 242 Portable 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. Diagonal viewing area: 3.5" (8.9 cm). Resolution: ......................240 pixels (vert.) x 160 pixels (horiz.) resolution; 38,400 total pixels Backlighting: ..................incandescent backlit screen Input power: ...................10 to 17 volts DC. 1 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: ......................200 kHz. Transducers:...................A Skimmer transducer comes packed with your unit. Its 20° cone angle offers a wide fish detection area of up to 60º with high sensitivity settings. Operates at boat speeds up to 70 mph (61 kts). Transmitter:....................800 watts peak-to-peak power (typical); 100 watts RMS power (typical). Sonar sounding depth capability:............600 feet (180 meters). Actual capability depends on transducer configuration and installation, bottom composition and water conditions. 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. 2 This manual covers the Cuda 242 and Cuda 242 Portable. Both units operate the same way. The only difference between the two is that the portable unit includes a portable transducer and other items that enable portable use. 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 factory'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 technology 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 converts 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. 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. 3 Transducer Installation Preparations The following shows the recommended sequence for installing the transducer: CAUTION: You should read over this entire installation section before drilling 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 desired configuration. 2. Determine the approximate location for the transducer and its cable route. 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 Skimmer transducer on a transom, on a trolling motor or inside a hull. Please read all instructions before proceeding with any installation. Your Skimmer transducer typically comes packaged with a one-piece stainless steel bracket for mounting it to the transom of your boat. The trolling motor mount uses a onepiece plastic bracket with an adjustable strap. 4 These are all "kick-up" mounting brackets. They help prevent damage if the transducer strikes an object while the boat is moving. If the transducer 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 connecting 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): Single-frequency transom installations Tools include: two adjustable wrenches, drill, #29 (0.136") drill bit, flathead 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 for5 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. 6 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 transducer 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 protection from bangs and bumps. 7 Transducer centerline Transom Hull bottom Align transducer centerline with hull bottom. However, there 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 frequently lose bottom signal lock while running at high speed, the transducer may be coming out of the water as you cross waves or wakes. Move the transducer a little lower to help prevent this. 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 installation (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 operation and good to excellent depth capability. 8 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. 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. 9 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 transducer assembly and hold it against the transom. Looking at the transducer from the side, check to see if it will adjust so that its face is parallel 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 parallel 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. 10 Ratchets Insert bolt and check transducer position on transom. 3. Assembling the transducer. Once you determine the correct position for the ratchets, assemble the transducer as shown in the following figure. Don't tighten the lock nut at this time. Nut Metal washer Rubber washers Bolt Metal washer Assemble transducer and bracket. 4. Drilling mounting holes. Hold the transducer and bracket assembly against the transom. The transducer should be roughly parallel to 11 the ground. The transducer's centerline should be in line with the bottom 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). 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. 12 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. 13 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 entering 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. 14 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 transducer 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! 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.) Internal tooth washer Bolt Nut TMB-S bracket 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. 15 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. 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. 16 Partial fish arches Transducer aimed too far back Transducer aimed too far forward 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 transducer 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 remove any oil film. Oil and dirt on the face will reduce the sensitivity or may even prevent operation. 17 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 layers. 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 manufacturer to confirm your hull specifications. Fill with resin Flotation material Fill with resin Inner hull 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 directly 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 18 sonar signal must pass through solid fiberglass. Any air bubbles in the fiberglass or the epoxy will reduce or eliminate the sonar signals. 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. Transducer location (high speed) Transducer location (trolling speed) Shoot-thru-hull transducer locations for high speed or trolling speed operation. 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 sensitivity 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 signal.) Don't touch the controls once they've been set. 19 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 hull. This is especially true if you have to turn sensitivity all the way up to get a decent bottom signal. 20 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. 21 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 formulated to work with these installation procedures. Other epoxy types may be too thin or may not cure to the right consistency for optimum transducer performance. 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 installation 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. 22 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 transducer should be parallel with the hull, with a minimum amount of epoxy 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 recommend 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 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. 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 in23 stalling an inline switch. This will let you shut off power to the 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, especially when the power cable is disconnected from the unit. To unit Red wire with 3 amp fuse Black wire 12 volt battery Power connections for the Cuda 242 sonar unit (direct battery connection shown). If possible, keep the power cable away from other boat wiring, especially the engine's wires. This will provide the best isolation from electrical 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 inline 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 warranty. 24 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 indash adapter kit. The FM-6 kit includes an instruction sheet, part 9880147-631, which contains a template for cutting out the mounting hole. This document can be downloaded free from the www.eaglesonar.com web site. Bracket Installation Recommended tools for this job include: drill, 1" (25.4 mm) drill bit, screwdriver. Required supplies for this job include: high quality, marine 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 Cuda 242 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 panels to reinforce the panel and secure the mounting hardware. Drill a 1" (25.4 mm) hole in the dash for the power/transducer and accessory 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 installation. Some customers, however, prefer to mount the bracket to the side of the cable hole -- it's a matter of personal preference. 25 107.5 [4.23] 82.7 [3.26] 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 Cuda 242 when mounted on quick release bracket. 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.) 26 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 Cuda 242 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. 27 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 springloaded ratchets while you move the unit with the other hand. Portable Sonar Installation Like many Eagle products, the Cuda 242 sonar is capable of portable operation. It uses the optional PPP-12 portable power pack. 28 The power pack and portable transducers expand the uses for your sonar. You can use your Cuda 242 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 portable transducer. The transducer can be stored inside the power pack. The PPP-12 requires eight AA alkaline batteries. Batteries are not included. 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 29 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 battery 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. 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 tilting the unit (right). 30 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 temperature. 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 following illustrations. 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. 31 Tie nylon cord here Suction cup Screw Bolt Washer Nut Washer Transducer Portable transducer assembly: rear view (left) and side view (right). Clean the chosen area of the hull before attaching the suction cup. Locate 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 Orientation and Fish Arches. Moisten the suction cup, then press it onto the hull as firmly as possible. 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. 32 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. 33 Notes 34 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 explanations below: 1 3 2 Eagle Cuda 242 keyboard. 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 selections 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. 35 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 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, repeatedly 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 Cuda 242. 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 features. Menu names and settings appear in the manual as small capital letters like SENSITIVITY, which refers to the Sensitivity menu. The MENU keys access these features, allowing you to customize unit settings. To switch menus, press MENU repeatedly. Press PWR to clear menus from the screen. 36 The Backlight menu with backlight turned on. 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. 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. 37 Digital depth Water Temp Bottom signal Depth range at bottom of depth scale Surface signal Fish symbols Structure or cover 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. Digital depth Water Temp Bait fish Bottom signal Depth range at bottom of depth scale Surface clutter Structure or cover Fish arches Grayline Full Chart page, showing digital depth (above) and temp (below). The Fish I.D. feature is turned off. 38 If the transducer with a built-in temperature sensor is connected, a digital display for water temperature also will be shown. This temperature display can be turned on and off. Depth Range When turned on, the unit automatically adjusts the depth range according to water conditions. When in auto range mode, it always keeps the bottom displayed in the lower portion of the screen. You can override the automatic depth range control and manually select a depth range. To do this, 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're 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). 39 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 the display, press the MENU key 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 because the top depth scale on the left of the screen will no longer show zero. For example, if the current range is 0 to 80 feet with zoom off, switching to zoom would enlarge the water column from 40 feet to 80 feet. The number 40 (instead of zero) would appear at the top of the depth range scale. To turn off the zoom feature off, press the MENU key 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. 40 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, 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. 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, 1530, 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. 41 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 control 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 it gives you slightly different results. To adjust sensitivity in Auto Mode: Press MENU until the SENSITIVITY control bar appears. 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 maximum 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. Press MENU until the SENSITIVITY menu appears. to select 42 MANUAL, then press PWR to clear the menu. To adjust the sensitivity, follow the same steps used for adjusting sensitivity in auto mode above. 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 Sensitivity. 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. Grayline® Grayline lets you distinguish between strong and weak echoes. It allows you to tell the difference between a hard and soft bottom. For ex43 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 control bar. If you have two signals of equal size, one with gray and the other without, then the target with gray is the stronger signal. This helps distinguish 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, press MENU until the GRAYLINE control bar appears. 44 Thin or no Grayline Wider 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 the level of Grayline or press to decrease it. Echoes scrolling onto the screen will show the effects of the Grayline change. 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 rate that echoes scroll across the screen is called the chart scroll speed. The default for this unit is "max" (100 percent); we recommend that you leave the scroll speed set there for virtually all fishing conditions. 45 Chart Speed control 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 sonar signal cone, the image appears on the screen as a long line instead 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, press MENU until the CHART SPEED control 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 above steps, but use the arrow keys to set the speed to 100% before clearing the menu. 46