Eagle MAGNA III PLUS INSTALLATION AND OPERATION INSTRUCTIONS

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Magna III

and

Magna III Plus

INSTALLATION AND OPERATION

INSTRUCTIONS

TABLE OF CONTENTS
INTRODUCTION .............................................................................................	3
SPECIFICATIONS ...........................................................................................	3
INSTALLATION ...............................................................................................	4
INSTALLATION - Bracket ...............................................................................	4
POWER CONNECTIONS ...............................................................................	5
SPEED/TEMP SENSOR (MAGNA III PLUS ONLY) .......................................	6
MAGNA III PORTABLE ...................................................................................	7
TRANSDUCER ................................................................................................	9
KEYBOARD BASICS ......................................................................................	10
DISPLAY .........................................................................................................	10
OPERATION ...................................................................................................	11
MENUS ...........................................................................................................	11
AUTOMATIC ...................................................................................................	11
RANGE ...........................................................................................................	11
ZOOM .............................................................................................................	12
SENSITIVITY ..................................................................................................	14
GRAYLINE® ...................................................................................................	14
FISH ID ...........................................................................................................	15
FISH TRACK™ ...............................................................................................	16
CHART SPEED ..............................................................................................	16
DISPLAY MODE .............................................................................................	17
ALARMS .........................................................................................................	20
BACK LIGHT ..................................................................................................	21
FEET/METER .................................................................................................	21
DISPLAY CONTRAST ....................................................................................	21
ASP (Advanced Signal Processing) ...............................................................	22
SIMULATOR ...................................................................................................	22
TRANSDUCER CONE ANGLES ....................................................................	23
SURVEYING A LAKE .....................................................................................	24
FISH ARCHES ................................................................................................	24
WATER TEMPERATURE AND THERMOCLINES ........................................	25
TROUBLESHOOTING ...................................................................................	27
WARRANTY ...................................................................................................	31
UPS RETURN SERVICE - U.S.A. ONLY .......................................................	32
MISSING PARTS INFORMATION .................................................................	34
HOW TO OBTAIN SERVICE - INTERNATIONAL ONLY ..............................	35

All features and specifications in this manual are subject to change without notice.

All screens in this manual are simulated.

Eagle Electronics

PO Box 669

Catoosa, OK 74015

INTRODUCTION

Thank you for purchasing an Eagle sonar. Your Magna or Magna III Plus is a high quality sonar designed for both professional and novice fishermen. These units have an automatic feature that finds and displays the bottom, fish, structure, and more! All you have to do is press the on key. However, if you wish to fine tune the unit, all you have to do is press the menu key. The Magna series has powerful features available through easy-to-use menus.

To get started with your Eagle unit, first read the installation section. This is where it all begins. Improper installation can cause problems down the road. After you’ve read the instructions, install the unit, then read the rest of the manual. The more you know about your unit, the better it will perform for you. Take this manual for reference when you head for the water.

SPECIFICATIONS

Dimensions ......................

5.9" W x 5.35" H x 3.4" D

Input Voltage ....................

10 - 15 vDC

Current Drain ...................

350 ma (lights off)

...........................

500 ma (lights on)

Transmitter

Frequency ..........

192 kHz

Output Power .....

275 watts (peak-to-peak) (typical)

...........................

34.4 watts (RMS)

Display ...........................

100 pixels (H) x 65 pixels (W)

...........................

Supertwist Liquid Crystal Display

5.9"

3.4"

5.35"

NOTICE!

The storage temperature for your unit is from -4 degrees to +167 degrees Fahrenheit (-20 degrees to +75 degrees Celcius). 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 customer service department or your local service center.

INSTALLATION - Bracket

You can install the Magna III on the top of a dash or from an overhead with the supplied bracket. It can also be installed in the dash with an optional IDA-3 mounting kit. If you use the supplied bracket, you may be interested in the optional GBSA-1 swivel bracket kit. This converts the Magna III's gimbal bracket to a swivel mount which can be used on the dash or overhead mounting positions. Installation instructions for the in-dash and swivel mounting kits are supplied with the adapter kits.

Mount the Magna III in any convenient location, provided there is clearance when it’s tilted for the best viewing angle. Holes in the bracket’s base allow wood screw or through bolt mounting. It may be necessary to place a piece of plywood on the back side of thin panels to reinforce the panel. Make certain there is enough room behind the unit to attach the power and transducer cables.

Drill a hole in the dash for the power and transducer cables. The best location for this hole is immediately under the gimbal bracket. This way, the bracket covers the hole. The smallest hole the Magna IIII's power and transducer cable connectors can pass through is 3/4". However, you can’t pass a power or transducer connector and another cable through a 5/8" hole. Therefore, after drilling the hole, pass the transducer connector up through the hole from under the dash. Then drop the power cable down from the front side of the dash. After installing the transducer, route its cable to the unit by passing it through the hole from under the dash. Slide the bracket over the hole, then route the transducer and power cables out the slot in the back of the bracket. Finally, fasten the bracket to the dash.

MAGNA III

GIMBAL BRACKET

RUBBER WASHER

PLASTIC WASHER

(PORTABLE UNITS ONLY)

GIMBAL KNOB

Attach the Magna III to the gimbal bracket using the supplied gimbal knobs and washers as shown above.

POWER CONNECTIONS

The Magna III works from a 12 volt DC system only. For the best results, run the power cable directly to the boat’s battery. Keep the power cable away from other boat wiring, especially the engine’s wires. This will give the best isolation from electrical noise. If the supplied cable is not long enough to reach the battery, splice #18 gauge insulated wire to it. If you do extend the power cable, make certain to attach the in-line fuse holder supplied with the Magna III to the battery or power source. This will protect both the unit and the power cable in the event of a short. Use only a 3-amp fuse.

You can also attach the power cable to an accessory or power buss, however, you may have problems with electrical interference.

These units have 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.

MAGNA III

WIRING

RED

WIRE

3 amp

BLACK FUSE

WIRE

12 VOLT BATTERY

RED

WIRE

MAGNA III PLUS

WIRING

BLACK	3 amp
WIRE	FUSE
TO
SPEED/	12 VOLT
TEMP	12 VOLT
SENSOR	BATTERY

SPEED/TEMPERATURE SENSOR INSTALLATION - (Magna III Plus Only)

Mount the speed/temp sensor on the boat’s transom in a location where the flow of water is the smoothest. There should be a minimum of turbulence and air bubbles in the chosen location. The port (left) side of the transom is preferred, however, the starboard (right) side can be used if necessary. Do not mount the speed sensor behind strakes, ribs, or thru-hull fittings. These will disturb the flow of water to the speed sensor. In a typical installation, the speed sensor is mounted six to twelve inches from the centerline of the hull. The sensor must always be in the water to function properly. Make certain the chosen location is in the water even at high speed or when the boat is on plane.

Once you determine the proper location, place the sensor on the transom. Make certain the sensor’s bottom is flush with the bottom of the hull. Mark the transom in four places, two in each slot. Drill a 5/32" mounting hole at each location. Mount the sensor to the hull with four #10 stainless steel screws. Use a good grade of caulking compound to seal the screws. Adjust the sensor so it is flush with the bottom of the hull and tighten the screws. If the base of the transom has a radius, fill the gap between the transom and the sensor with caulking compound. This will help ensure a smooth water flow.

Route the sensor cable to the in-line connector on the Magna Plus’ power cable. The speed/temp sensor is now ready for use.

GOOD LOCATION

SIDE VIEW

REAR VIEW

MAGNA III PORTABLE ASSEMBLY

INSTALLING THE BATTERIES

Release the latch on the front of the battery case. Open the compartment and install four "D" cell batteries into the adapter. For the longest life, we recommend you use alkaline batteries. This battery case will also hold one rechargable battery instead of the "D" cells. See the enclosed coupon for more information on the rechargable battery.

"D" CELL BATTERY

After installing the batteries, close the case and plug the power cable on the battery case into the Magna III Portable. Plug the adapter cable into the back of the sonar unit. Turn the sonar unit on. If it doesn't work, make certain the battery terminals are making good contact against the battery contacts. Also check the wiring connections on the D-cell battery adapter. The red wire on the power cable should be attached to the red wire on the D-cell battery adapter and the power cable's black wire should be connected to the black wire on the D-cell battery adapter. If it still doesn't work,

check the battery voltage. Most of the complaints we receive about portable units result from stale batteries. Make certain the ones you buy are fresh. Always remove batteries from the battery compartment before storing the unit as 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 Magna III Portable good and warm along with the batteries 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. Don't ever heat the batteries over an open flame or direct hot air onto them. A fire or explosion could result.

PORTABLE TRANSDUCER ASSEMBLY

Assemble the transducer and bracket as shown below. Attach the transducer to the bracket with the supplied hardware. Make certain there is one washer on each side of the transducer, inside the bracket. Slide the other washer over the end of the bolt and thread the nut onto it. 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 this transducer, tie the other end of the nylon cord to the boat. This will help prevent the loss of the transducer if it comes off the boat.

TIE

NYLON

CORD

HERE

SCREW

NUT

BOLT

WASHER WASHER

Clean the chosen area of the hull before attaching the suction cup. Locate the transducer on the hull as shown below. Don't allow the bracket to go below the hull, as water pressure against it can cause the suction cup to come off at speed. Moisten the cup, then press it onto the hull as firmly as possible. Tie the nylon cord to the boat and route the transducer cable to the sonar unit. Plug the transducer connector into the "Y" power cable on the Magna III. Your portable sonar is now ready for use.

HULL

PERMANENT MOUNT TRANSDUCER INSTALLATION

The HS-WSBK supplied with your Magna III is a transom mount transducer. It can be installed on any outboard or stern-drive (inboard\outboard) powered boat. It can also be permanently installed inside the boat to "shoot-through" the hull on some fiberglass boats.

The “kick-up” mounting bracket helps prevent damage if the transducer strikes an object while the boat is moving. If the transducer does “kickup”, the bracket can easily be pushed back in place without tools.

Read the enclosed transducer installation manual 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, since once it is epoxied into position, the transducer usually cannot be removed. Remember, the transducer location is the most critical part of a sonar installation. If it isn’t done properly, the sonar can’t perform at it’s designed potential.

KEYBOARD BASICS

The unit sounds a tone when you press any key. This tells you the unit has accepted a command.

ON/CLEAR

Use this key to turn the unit on. It also clears menu selections and the menus from the screen.

OFF

This key turns the unit off.

The Magna III and Magna III Plus have many features that are accessed with this key. To see the first menu, press the MENU key. To see the other menus, press the MENU key repeatedly.

UP and DOWN ARROWS

Use these keys to adjust virtually every feature and function on the unit. NOTE: The up arrow key also stops the chart when no menus are displayed. In other words, anytime you wish to stop the chart, first make certain no menu is on the screen. Now press the up arrow key. The chart freezes and the word “STOP” appears at the top of the screen. To start the chart, press the up arrow key again.

DISPLAY - General

The lights flash for about ten seconds when the Magna III is turned on. Three menus appear, one after the other. The menus are the lights (LAMP), feet-meter selection (FEET/METER), and contrast adjustment (DARK/LIGHT). To turn the lights on, press

the up arrow key. To switch from feet to meters, press the down arrow key when the proper menu appears. To adjust the contrast, wait for the DARK/LIGHT menu to appear. Now press the up arrow key to darken the screen, the down arrow to lighten it. The menus disappear after a few seconds. If you don’t want to wait, press the ON/CLEAR key to clear the menus from the screen.

When the Magna III is first turned on, the display appears similar to the one at right. The unit is in the automatic mode and the Fish

ID feature is on. The depth range displays on the upper left side of the screen. On the screen at the bottom of the previous page, the range is from 0 to 60 feet and the bottom depth is 37.3 feet.

OPERATION

MENUS

The Magna III and Magna III Plus use menus to guide you through the unit’s functions and features. The menu key accesses these features, allowing you to customize the unit to your particular needs and water conditions. All you have to do to leave one menu and enter another is press the menu key repeatedly. If you ever get lost in the menus, simply press the ON/CLEAR key. This clears the menus from the screen.

Menus change depending on the mode the unit is in. For example, if the automatic mode is turned off, the sensitivity menu changes from “AUTO SENS” to “MAN SENS.” Other messages may appear in menu boxes or new menus can appear, again depending on previous selections.

On the screen shown on the previous page, the lamp menu is showing.

AUTOMATIC

When the Magna III is first turned on, the automatic feature is enabled. This feature automatically adjusts the unit’s range and sensitivity according to water conditions. It always keeps the bottom depth displayed in the lower portion of the screen.

To turn the automatic feature off, press the menu key until the AUTO/MAN menu appears. Now press the down arrow key. This highlights the letters “MAN.” The unit is now in the manual mode. Wait a few seconds and the menu will scroll off the screen’s left side.

Pressing the ON/CLEAR key also clears it. To turn the automatic feature on again, repeat the above steps, except this time press the up arrow key.

RANGE

You can’t adjust the range when the Magna III is in the automatic mode. It is adjustable when the unit is in the manual mode, however. To do so, first put the unit in the manual mode. Now press the ON/CLEAR key to clear the screen. Then press the menu key until the “RANGE SEL” menu appears as shown below. The current range shows at the bottom of the

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