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Humminbird, DualBeam PLUS, SmartCast, Selective Fish ID+, WhiteLine, QuadraBeam PLUS, RTS, X-Press Menu, Fish ID+, WideSide, Structure ID, TrueArch, UltraBlack, Angler Profile Presets, and WeatherSense are trademarked by or registered trademarks of Humminbird. 2008 Humminbird, Eufaula AL, USA. All rights reserved.

How Sonar Works

Sonar technology is based on sound waves. The 500 Series Fishfinder uses sonar to locate and define structure, bottom contour and composition, as well as depth directly below the transducer. Your 500 Series Fishfinder sends a sound wave signal and determines distance by measuring the time between the transmission of the sound wave and when the sound wave is reflected off of an object; it then uses the reflected signal to interpret location, size, and composition of an object. Sonar is very fast. A sound wave can travel from the surface to a depth of 240 ft (70 m) and back again in less than 1/4 of a second. It is unlikely that your boat can "outrun" this sonar signal. SONAR is an acronym for SOund and NAvigation Ranging. Sonar utilizes precision sound pulses or "pings" which are emitted into the water in a teardrop-shaped beam. The sound pulses "echo" back from objects in the water such as the bottom, fish and other submerged objects. The returned echoes are displayed on the LCD screen. Each time a new echo is received, the old echoes are moved across the LCD, creating a scrolling effect.
When all the echoes are viewed side by side, an easy to interpret "graph" of the bottom, fish and structure appears.
The sound pulses are transmitted at various frequencies depending on the application. Very high frequencies (455 kHz) are used for greatest definition but the operating depth is limited. High frequencies (200 kHz) are commonly used on consumer sonar and provide a good balance between depth performance and resolution. Low frequencies (83 kHz) are typically used to achieve greater depth capability.
The power output is the amount of energy generated by the sonar transmitter. It is commonly measured using two methods: Root Mean Square (RMS) measures power output over the entire transmit cycle. Peak to Peak measures power output at the highest points. The benefits of increased power output are the ability to detect smaller targets at greater distances, ability to overcome noise, better high speed performance and enhanced depth capability.

Single Beam Sonar

Your Humminbird 515, 525 or 535 Fishfinder uses a 200 kHz single beam sonar system with a 20 area of coverage. Depth capability is affected by such factors as boat speed, wave action, bottom hardness, water conditions and transducer installation.

DualBeam Sonar

(565 Fishfinders only)
Your Humminbird Fishfinder 565 uses a 200/83 kHz Dual Beam sonar system with a wide (60) area of coverage. DualBeam sonar is optimized to show the greatest bottom definition using a narrow (20) beam yet can still indicate fish found in the wide (60) beam when the Fish ID+ feature is turned on. DualBeam is ideal for a wide range of conditions - from shallow to very deep water in both fresh and salt water. Depth capability is affected by such factors as boat speed, wave action, bottom hardness, water conditions and transducer installation.

NOTE: It's important to note that your 565 Fishfinder is a DualBeam-only unit and should not be confused with the DualBeam PLUS functionality of the 575 Fishfinder. DualBeam will only show hollow fish symbols from the wide 83 kHz beam when Fish ID+ is turned on. You cannot view the 83k Hz sonar information separately from the 200 kHz sonar information as you can in a DualBeam Plus 575 Fishfinder unit.

QuadraBeam PLUS Sonar

(575 Fishfinders only)

455 kHz

200 kHz

83 kHz

90 Total Coverage Bottom Coverage = 2 x Depth
Your Humminbird 575 Fishfinder supports QuadraBeam PLUS sonar. QuadraBeam PLUS sonar provides an extremely wide 90 area of coverage. QuadraBeam PLUS starts with two fan-shaped kHz Side Structure locating sonar beams to spot fish, bait and structure to the left and right of the boat over an area of the bottom thats always equal to twice your depth. QuadraBeam PLUS finds more fish faster, and can even tell you where to put your bait by showing if fish are to the left, right or directly beneath your boat.
For structure directly below your boat, Quadrabeam PLUS uses a DualBeam PLUS 200/83 kHz sonar system with a wide (60) area of coverage. DualBeam PLUS sonar has a narrowly focused 20 center beam, surrounded by a second beam of 60, expanding your coverage to an area equal to your depth. In 20 feet of water, the wider beam covers an area 20 feet wide. The 20 center beam is focused on the bottom, to show you structure, weeds and cover. The 60 wide beam is hunting for fish in the wide coverage area. DualBeam PLUS sonar returns can be blended together, viewed separately or compared side-by-side. DualBeam PLUS is ideal for a wide range of conditions - from shallow to very deep water in both fresh and salt water. Depth capability is affected by such factors as boat speed, wave action, bottom hardness, water conditions and transducer installation.

Whats On the Display

The 500 Series Fishfinder can display a variety of useful information about
Depth - water depth; can be set to alarm when the water becomes too shallow. Speed - if a Temp/Speed accessory is attached, your Fishfinder can display the speed of the boat, and can keep a Triplog of nautical or statute miles traveled. Temperature - water surface temperature. Timer - elapsed time with Temp/Speed Accessory. Distance - distance traveled with Temp/Speed Accessory. Average Speed - average speed reading with Temp/Speed Accessory. Bait Ball Hard Bottom Rocky Bottom Second Sonar Return - when the sonar signal bounces between the bottom and the surface of the water and back again. Use the appearance of the second return to determine bottom hardness. Hard bottoms will show a strong second return, while soft bottoms will show a very weak one or none at all.

NOTE: Entries in this view that list (with Temp/Speed) are available only if the optional-purchase
the area under and adjacent to your boat, including the following items:
83 kHz, Wide Beam Hollow Fish Symbol (ONLY available on Dual Beam Units) Structure - where fish may be hiding. Fish - fish are displayed as arches and/or fish icons, and the unit can be set to alarm when a fish of a certain size is detected. When a target is detected and Fish ID+TM is on, a Fish ID+TM symbol with depth is displayed. The size of the symbol shows the intensity of the sonar return. The unit will clearly show schools of Bait Fish as "clouds" of different shapes and sizes, depending on the number of fish and boat speed. 200 kHz, Narrow Beam Shaded Fish Symbol Thermoclines - layers of water with different temperatures that appear at different depths and different times of the year. A thermocline typically appears as a continuous band of many gray levels moving across the display at the same depth. Soft Bottom RTS (Real Time Sonar) Window Battery Voltage - the voltage of the boats battery; can be set to alarm if the voltage falls below a certain point.
device is connected to the Fishfinder.
The views available on your Fishfinder are: Sonar views: Sonar View Zoom View 200/83 kHz Split Sonar View (575 Fishfinder only) Big Digits View Side Beam View (575 Fishfinder only).
NOTE: When you change any menu settings that affect the sonar, the view will update immediately (i.e. you dont have to exit the menu to apply the change to the screen). For instance, by switching between "Inverse" and "Structure ID" from the X-Press Menu it is possible to quickly alternate between the two viewing methods.
Sonar View is the default view. When the VIEW key is pressed, the display cycles through the available views. When the EXIT key is pressed, the display cycles through the available views in reverse order. Any view can be hidden or displayed as part of the view rotation using the Views Menu tab.

Sonar View

Sonar View presents a historical log of sonar returns. Depth is always displayed. Readouts for temperature and speed are automatically displayed if the appropriate accessory is connected. The most recent sonar returns are charted on the right side of the window; as new information is received, the older information is moved across the display to the left. A Digital Depth Readout is displayed in the upper left corner. A scale with Upper and Lower Depth Range readouts appears along the right edge of the Sonar View. The scale indicates the distance from the surface of the water to a depth range sufficient to show the bottom. Depth Range is automatically selected to keep the bottom visible on the display, although you can adjust it manually as well (see Sonar X-Press Menu). Six additional Digital Readouts display information from optional-purchase accessories. These information boxes can be customized to show only the information desired (see Setup Menu Tab, Select Readouts).

Depth Upper Depth Range, Full Range View Upper Depth Range, Zoom View Full Range View Zoomed View Zoom Preview Box Lower Depth Range, Zoom View Zoom Level Lower Depth Range, Full Range View
200/83 kHz Split Sonar View
Split Sonar View displays sonar returns from the 83 kHz wide beam on the left side of the screen and displays sonar returns from the 200 kHz narrow beam on the right side of the screen and is only available on the 575 Fishfinder. Depth is always displayed in the upper left hand corner. You can use the Split Sonar View to make side by side comparisons between the sonar returns from the 83 kHz wide beam and the 200 kHz narrow beam. The digital readouts in the Split Sonar View cannot be customized; therefore, information such as water temperature and voltage are unavailable in the Split Sonar View.

Depth Upper Depth Range

200 kHz Sonar History Window 83 kHz Sonar History Window

Big Digits View

Big Digits View provides digital data in a large, easy-to-see format. Depth is always displayed. Readouts for temperature, speed and Triplog information are displayed automatically if the appropriate accessory is connected to the system. The Triplog shows distance traveled, average speed, and time elapsed since the Triplog was last reset. The digital readouts in the Big Digits View cannot be customized.
Depth Timer shows the time elapsed since Triplog was last reset. Distance is the distance traveled since the Triplog was last reset. Voltage displays the battery voltage. Average Speed shows the speed since the Triplog was last reset.

Temperature

Side Beam View
Side Beam View shows sonar information from both the left and right 455 kHz beams and the 200 kHz down-looking beam in one view and is only available on the 575 Fishfinder. You can customize the way the sonar data is displayed in the Side Beam View to suit your personal preferences. Depending on the layout selected from the Quad Layout Sonar X-Press menu (only available on the Sonar X-Press menu when in Side Beam View), the display will represent the same sonar data in one of the following three layouts: Default layout: The top portion of the display presents a historical log of sonar returns from the 200 kHz down-looking sonar beam. New information in the down beam panel scrolls from right to left. The bottom portion of the display presents a historical log of sonar returns from the 455 kHz right- and left-looking sonar beams. New information in the side beam panels scrolls from the center out.

Depth 200 kHz Sonar History Window Temperature
Left Side 455 kHz Sonar History Window
Right Side 455 kHz Sonar History Window Water Surface Line for 455 kHz Sonar History Windows
Classic layout: The top portion of the display presents a historical log of sonar returns from the 200 kHz down-looking sonar beam. The bottom portion of the display presents a historical log of sonar returns from the 455 kHz right- and left-looking sonar beams. New information appears at the top, and scrolls down the display.
200 kHz Sonar History Window
Slanted layout: This layout presents the two 455 kHz side sonar beams and the 200 kHz down-looking sonar beam as three panels of historical data. This layout is presented as three slanted panels. New information appears on the right, and scrolls to the left.
Right Side 455 kHz Sonar History Window
In all of these layouts, the sonar information from the side-looking beams reveals bottom contour, structure and fish similar to the down-looking beam, but the area covered is to the left and right of the area shown in the downlooking portion, so you actually see more of the bottom. The distance covered by the right and left beams is based on the depth setting for the down-looking beam, up to a maximum of 160 feet.
Your Fishfinder user interface consists of a set of easy-to-use keys that work with various on-screen views and menus to give you flexibility and control over your fishing experience.

POWER/LIGHT Key

The POWER/LIGHT key is used to turn the Fishfinder on and off, and also to adjust the backlight and contrast of the display. Press the POWER/LIGHT key to turn the unit on. The Title screen is then displayed until the Fishfinder begins sonar operation. Your Fishfinder will start up with the backlight on and will automatically turn it off to conserve power. To turn the backlight on for night fishing, or to adjust the display contrast, press the POWER/LIGHT key to access the Light and Contrast menu. Use the 4-WAY Cursor key to select Light or Contrast and then use the LEFT or RIGHT Cursor key to change the settings. Press EXIT to exit the Light and Contrast menu. Press and hold the POWER/LIGHT key for 3 seconds to turn the unit off. A message will appear telling you how many seconds there are until shutdown occurs. Your Fishfinder should always be turned off using the POWER/LIGHT key. This will ensure that shutdown occurs properly and any menu settings will be saved.

575 Title Screen

The Menu System
The menu system is divided into easy-to-use menu modules. The main components of the menu system are: Start-Up Options Menu - Press the MENU key during the power up sequence to view the Start-Up Options menu. X-Press Menu - The X-Press menu allows you to access the settings that are changed frequently without having to navigate through the whole menu system. Press the MENU key once to display the X-Press Menu. When you select a menu item from the X-Press menu, the menu will collapse, leaving only the menu choice on the screen. Use the UP or DOWN Cursor keys to reactivate the X-Press menu.

X-Press Menu

NOTE: The X-Press Menu choices will vary depending on which view is active when you press the MENU key, as well as whether you are in Normal or Advanced User Mode.
Main Menu Tabs - Less frequently-adjusted menus are grouped into the Main Menu System. The Main Menu system is organized under the following tab headings to help you find a specific menu item quickly: Alarms, Sonar, and Setup. Press the MENU key twice for the Main Menu, then use the 4-WAY Cursor LEFT or RIGHT key to select a tab, and use the DOWN or UP key to Main Menu System select a specific menu item under that tab, then Normal User Mode use the LEFT or RIGHT keys again to change a menu setting. Press the EXIT key to move quickly to the top of the tab. A down arrow at the bottom of a menu means that you can scroll to additional menu choices using the DOWN Cursor key. A right or left arrow on a menu choice means that you can use the RIGHT or LEFT Cursor keys to make changes or to see more information.
NOTE: The Main Menu choices will vary depending on whether you are in Normal or Advanced User Mode.
User Mode (Normal or Advanced) - An Advanced Mode is provided for users who desire the highest level of control over the Fishfinder and Normal Mode for users who desire greater simplicity and fewer menu choices. Additional Advanced menu choices will be displayed throughout the menu system when you navigate to specific menus while in Advanced Mode. Any changes made while in Advanced Mode will remain in effect after you switch back to Normal Mode. See Setup Menu Tab: User Mode for specific instructions on changing to Advanced User Mode.

Sonar Tab, Normal Mode

Sonar Tab, Advanced Mode
Total Screen Update - when you change any menu settings that affect the Sonar View, the view will update immediately (i.e. you dont have to exit the menu to apply the change to the screen).
Press the MENU key when the Title screen is displayed to access the Start-Up Options menu.

Use the UP or DOWN 4-WAY Cursor keys to position the cursor, then the RIGHT Cursor key to select one of the following choices. If you wait too long, the system will default to whichever menu mode happens to be highlighted: Normal Simulator System Status. See the following paragraphs for more information about each of these choices.

Normal Operation

Use Normal operation for on the water operation with a transducer connected. In addition, your Fishfinder uses advanced transducer detection methods to determine if a transducer is connected. If a functioning transducer is connected, Normal operation will be selected automatically at power up and your Fishfinder can be used on the water. Exit Normal operation by powering your Fishfinder off.

Simulator

Use the Simulator to learn how to use your Fishfinder before taking your boat on the water. The Simulator is a very powerful tool that simulates on the water operation, providing a randomly-updated display. We recommend going through this manual while using the Simulator, since all of the menus function and affect the display the way they actually do when in Normal operation.
NOTE: To get the full benefit of the Simulator, it is important to select Simulator manually from the Start-Up Options menu as opposed to letting the Fishfinder enter Simulator automatically (as it will if a transducer is not connected and you do nothing during power up). Manually selecting Simulator from the Start-Up Options menu allows you to pre-configure your Fishfinder for on the water operation. Any menu changes you make will be saved for later use.
A message will appear on the display periodically to remind you that you are using the Simulator. Exit the Simulator by powering your Fishfinder off.

System Status

Use System Status to view system connections and to conduct a unit self-test. The following screens are displayed in turn when you press the VIEW button when using System Status: Self Test Accessory Test. Exit System Status by powering your Fishfinder off.

Self Test

Self Test displays results from the internal diagnostic self test, including unit serial number, Printed Circuit Board (PCB) serial number, software revision, total hours of operation and the input voltage.

Self Test Screen

Accessory Test
Accessory Test lists the accessories connected to the system.

Accessory Test Screen

NOTE: The speed accessory will be detected only if the paddlewheel has moved since your Fishfinder was powered up.
The Sonar X-Press Menu provides access to the settings most frequently-used. Press the MENU key once while in any of the Sonar Views to access the Sonar X-Press Menu.
NOTE: Menu choices will vary depending on system settings such as whether the unit is set for Advanced User mode. NOTE: Zoom Level only appears in Sonar Zoom View. NOTE: Quad Layout only appears in Side Beam View on 575 Fishfinders.

Select Readouts

(Advanced; Sonar View only)
Select Readouts sets individual digital readouts on the Sonar View. This Advanced feature allows you to select what data will be displayed in each of 6 fixed-position data windows arranged around the left and bottom edges of the Sonar View screen, or whether a particular window will be turned off, displaying nothing in that area; you can access this menu choice only when in Advanced User Mode (see Setup Menu Tab: User Mode.) Data windows can display readouts from supported accessories such as Temp/Speed. Each data window can either be empty or contain one of the following: Speed Temperature

Default Sonar View

Triplog Voltage

Customized Sonar View

To Select Readouts: 1. Make sure you are in Advanced User Mode, then highlight Select Readouts on the Setup main menu. 2. Use the RIGHT 4-WAY Cursor Control key to initiate this procedure. 3. The Select Readouts submenu will appear, showing a list of all Readouts. Use the UP or DOWN Cursor keys to select a particular Readout position, then use the RIGHT or LEFT Cursor keys to change what will be displayed at that position. (Off, Speed, Temperature, Triplog, Voltage)

Depth Offset

Depth Offset will adjust the digital depth readout to indicate depth from the waterline or boat's keel. Enter a positive vertical measurement from the transducer to the waterline to read the depth from the waterline. Enter a negative vertical measurement from the transducer to keel to read the depth from the keel. This menu choice is available only when in Advanced User Mode (see Setup Menu Tab: User Mode). To change the Depth Offset setting: 1. Make sure you are in Advanced User Mode, then highlight Depth Offset on the Setup menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Depth Offset setting. (-10.0 to +10.0 feet or -3 to 3 meters [International Models only], Default = 0)

Temp Offset

Temp Offset will adjust the temperature readout by the amount entered. This menu choice is available only when in Advanced User Mode (see Setup Menu Tab: User Mode.) To change the Temp Offset setting: 1. Make sure you are in Advanced User Mode, then highlight Temp Offset on the Setup menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Temp Offset setting. (-10.0 to +10.0 degrees, Default = 0)

Speed Calibration

(Advanced; with Temp/Speed only)
Speed Calibration will adjust the speed readout by the percentage entered, and will appear in the menu if a Temp/Speed Accessory is connected and the paddlewheel has moved at least once, when the unit is in Advanced User Mode (see Setup Menu Tab: User Mode.) To change the Speed Calibration setting: 1. Make sure you are in Advanced User Mode, then highlight Speed Calibration on the Setup menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Speed Calibration setting. (-20% to +20%, Default = 0%)

When the boat moves at higher speeds, the bottom disappears or suddenly weakens, or the display contains gaps.
There are no fish detected, even when you know they are in the water under the boat, or sonar readings seem weak or faulty.
Sonar readings may be affected if the transducer is not positioned correctly (i.e. mounted at an angle, not straight down), or there is some kind of mechanical interference, either because it is mounted inside a hull that is too thick for proper sonar transmission, the bond between the transducer and the hull is not airtight, or because the transducer is dirty. Check with your Installation Guide for guidance on re-positioning the transducer, and make sure the transducer is clean. Low battery voltage may be affecting the power of signal transmission. Electrical noise from the boats engine may be interfering with sonar reception. See Finding the Cause of Noise for more information.
Finding the Cause of Noise
Electrical noise usually affects the display with many black dots at high speeds, and high sensitivity readings. One or more of the following sources can cause noise or interference:

Possible Source of Noise

Other electronic devices

Isolation

Turn off any nearby electronic devices to see if the problem goes away, then turn them on one at a time to see if the noise reappears. To determine whether the boats engine is the source of the noise, increase the RPMs while the boat is in neutral and stationary to see if the noise increases proportionately; if noise appears when you rev the engine, the problem could be the spark plugs, alternator, or tachometer wiring. Replace the spark plugs with resistor plugs, install an alternator filter, or route the control head power and transducer cables away from the engine wiring. Turbulence created by the propeller can cause noise; make sure the transducer is mounted at least 15 (38 cm) from the propeller, and that the water flows smoothly over the face of the transducer at all times.

The boats engine

Cavitation from the boats propeller
500 Series Fishfinder Accessories
Accessories customize the 500 Series Fishfinder to your needs and enable you to stay on the edge of new technology. When an accessory is connected to the 500 Series Fishfinder, additional menus and readouts are added automatically to the Main Menu System. Accessories available today that are supported by your Fishfinder include: Temperature/Speed: purchase and plug in the Temperature/Speed accessory to your 500 Series control head to get real time speed and temperature readouts, as well as a valuable Triplog function.

Chart Speed: Chart Speed is a user-controllable feature that sets the speed at which sonar information moves across the display. A faster setting displays sonar information from more pings and shows more detail, but the information moves quickly across the display: a slower setting permits viewing of more sonar history, but does not display as much detail. The best setting is often the user's personal choice. Cone Angle: The cone angle is the angular measurement of the sonar beam at a specific dB down point (i.e. -10 dB). See dB Down Point. Customizable Digital Readouts: Customizable Digital Readouts is a Humminbird feature that permits the user to select the specific digital information that appears in the main Sonar view (i.e. Speed, Temperature, Barometric Pressure, TripLog, etc.) Dead Zone: The dead zone is the area of the sonar beam that receives the sonar signal after the main bottom return. Fish and other objects close to the bottom that fall within the dead zone will probably not be visible in the sonar beam. Precision sonar beams, such as the Humminbird 20 beam, have a smaller dead zone than wider sonar beams. Decibel: A Decibel is the measurement for sound pressure level, or "intensity" of the sonar return. See dB Down Point. dB Down Point: The dB Down Point is the standard decibel level at which the sonar cone angle is measured, and is written as "@ -10 dB" or "@ -3 dB". Measurements at smaller down points (bigger negative numbers) indicate that the less intensive sonar signals are being used for the measurement. Display, FSTN: FSTN is an acronym for Film Super-Twist Nematic. FSTN is a monochrome display technology characterized by black, high-contrast pixels. All monochrome fixed mount Humminbird products use FSTN technology. DualBeam PLUS: DualBeam PLUS is a Humminbird sonar configuration that uses two sonar beams simultaneously, and combines the information from both beams into one view by overlapping the data on-screen, or shows each beam individually side by side, or permits each beam to be viewed individually full screen.
Feature Memory: Feature Memory is a Humminbird feature that retains the user's menu settings in permanent memory. Settings are retained even when the unit is powered off indefinitely. Fish Arch: A Fish Arch is the apparent "arch" that appears on the display when any object moves through the sonar cone. The arch results from a gradual decrease in distance to an object as it moves into the sonar cone. The distance to an object changes due to the conical shape of the sonar beam, which causes the distance to be greater at the edges of the beam than at the center of the beam. When this distance change is graphed on the display, an arch appears. Fish ID+: Fish ID+ is a Humminbird feature that uses advanced sonar processing algorithms to determine if a detected object is likely to be a fish. When the sonar signal from an object meets strict parameters, the unit draws a Fish Symbol (or icon) and the digital depth of the target. On DualBeam and DualBeam PLUS units, fish detected in the narrow center beam are shown as shaded symbols, and fish detected in the wider beam are shown as hollow symbols. Fish Symbol: A Fish Symbol is the graphic that is displayed on the screen when Fish ID+ determines that a sonar return is likely to be a fish. See Fish ID+. Freeze Frame: Freeze Frame is a Humminbird feature that pauses the sonar scrolling so that the image on screen can be studied with greater detail. See Instant Image Update. Frequency: Frequency is a measure of the number of sound wave cycles per second of a sound impulse transmitted underwater. A typical frequency for fishfinders is 200 kHz, which offers a good balance of performance under many conditions. Lower frequencies, such as 50 kHz, are capable of penetrating to greater depths, but with less resolution. Higher frequencies, such as 455 kHz, offer greater resolution, but are limited in depth performance. Humminbird uses a variety of frequencies that are optimized for specific applications. Grayscale: Grayscale is the use of varying shades of gray to represent the strength of the sonar signal on the display , and is a very intuitive method of presenting information. Traditionally, the strongest sonar signals are represented in black, and progressively weaker signals are represented in progressively lighter shades of gray.

Grayscale, Inverse: Inverse Grayscale is a Humminbird feature that reverses the correlation of sonar signal strength and the shade of gray typically used to represent it. The strongest sonar signals are represented by "white", and progressively weaker signals are represented in progressively darker shades of gray. While somewhat counter-intuitive, this method makes the sonar images crisper, and has the benefit of enhancing the apparent sensitivity because the weaker signals appear bolder. Inverse grayscale works well in very clear water. Debris-laden water often appears as a lot of clutter on the screen. Instant Image Update: Instant Image Update is a Humminbird feature that updates all the sonar information on the display when Sensitivity and a variety of sonar settings (Bottom View, Range, etc.) are modified. This differs from the traditional functionality that only updates the new sonar information collected after the setting change. Instant Image Update permits more accurate fine-tuning of the display because the user can see the results on the complete sonar graph. When combined with the Freeze Frame feature, the user can adjust and understand the effects of many different sonar settings quickly and easily. Maximum Depth Menu: The Maximum Depth Menu is a Humminbird feature that optimizes performance based on the maximum operational depth set by the user. Many Humminbird units can operate across a very broad depth range (up to 2500 feet) which causes the unit to "look" up to that full depth under some circumstances. Due to the speed of sound in water, this can result in less responsiveness because the unit has to wait for a longer period of time to receive the sonar signal. When the Maximum Depth menu is set to a lower value, the unit only looks up to the setting, which increases the responsiveness of the unit. This is an important feature for anyone operating in shallower depths! Noise: Noise is unintentional, external sound waves that interfere with the optimal operation of sonar. Noise appears as random "dots" on the display, and is caused by a variety of sources. Electrical noise (from trolling motors, bilge pumps, VHF radios) typically manifests as a consistent dot pattern. Electrical noise can be isolated by selectively turning on and off other electrical devices to determine the source. Often re-routing the power cable, or connecting to an alternative power supply (second battery) can help overcome electrical noise. Hydrodynamic noise (from propeller and/or hull cavitation) has a more random appearance and is generally related to boat speed, so that faster operation results in more noise.

Viewing Angle: Viewing Angle is an attribute of an LCD that characterizes visibility of the display when viewing from off the central access, such as when standing to the side of the fishfinder. Wider viewing angles are better because the information remains visible even when viewing from the side. WhiteLine: WhiteLine is a Humminbird feature that highlights the strongest sonar return on the display using a very light gray band. This is preferred by some anglers who have grown accustomed to the feature on paper graph chart recorders. WideSide: WideSide is a Humminbird sonar configuration used in an optional transducer. WideSide uses three sonar beams pointing to the left, right and down. Beams pointing to the left and right are effective for spotting fish and structure near the surface or on the bank. The downlooking beam provides depth information directly below the boat. X-Press Menu: X-Press Menus are a Humminbird feature that make the most commonly-used menu selections available with one press of the MENU key. Items that appear on the X-Press Menu are related to the current view, and present the most logical choices for that view. Sonar View X-Press menus will differ from Chart View X-Press menus, etc. X-Press menus are one of the principal reasons that Humminbird products are easier to use. Zoom: Zoom is a feature that focuses in on a smaller area of the bottom to provide enhanced resolution. With enhanced resolution, the angler can more easily see fish hanging in structure or multiple fish hanging close together. Split screen zoom divides the display into the full range view on the right, and the zoomed view on the left. Humminbird offers One-Touch Zoom which allows the zoom feature to be easily accessed from the regular sonar view with just one key press, eliminating the need to use menus to access the feature. Zoom, Bottom Lock: Bottom Lock Zoom is a feature that focuses on a smaller area just above the bottom to provide enhanced resolution. Unlike regular zoom, it continuously graphs the bottom at a constant point on the display regardless of changes in depth. This "flattens" out the bottom contour, but is effective at showing fish on or near the bottom, and is preferred by many saltwater anglers.

For More Information: Steve Roth (402) 437-6400 steveroth@swansonrussell.com FOR IMMEDIATE RELEASE
Humminbird Unveils Enhancements to Highly Popular 700 Series
EUFAULA, Ala. (July, 2008) Dedicated to giving anglers the best possible fishing experience, Humminbird has made several enhancements to its most popular line of fishfinders, the 700 Series.
Select models feature new higher resolution screens, internal GPS and dual SD card slots. New higher resolution screens are featured on all color display units (700c). The screens have an industry-best high resolution 640x640 TFT color display.
Weve significantly increased the number of pixels, said Dale Logue, product manager for Humminbird. The increased resolution provides users with the sharpest, most defined image of any fishfinder at this price point. Compared to similar units, the image quality of the 700 Series is head and shoulders above the competitors.
All Series models feature three preset buttons which anglers can program to switch to various selected screen views.
The preset buttons are a great feature similar to a car radio, said Logue, but instead of selecting a favorite radio station, anglers can call up their favorite views, such as a split screen displaying a chart map and sonar images, with a touch of a button. With a wide selection of views, anglers have numerous options for preset views.
The new 700 Series models that include GPS (which are designated as Combo models) and a color screen now include new dual SD card slots. The two card readers give anglers many additional options. For example, a Navionics map chip can be placed in one slot, and a blank SD card can be inserted in the second slot to record routes and waypoints or save sonar recordings.

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The new 700 Combo models are also available with a choice of either external or internal 50channel GPS. Since the internal GPS antenna is front-mounted near the top of the control head, the unit itself can be mounted in-dash with no obstruction to cause reception issues.
The Series will still feature the lowest price package for a fishfinder with Side Imaging Technology in the 798cSI Combo (MSRP $999.99). Humminbirds exclusive Side Imaging sonar provides incredible picture-like images with coverage up to 480 feet from side to side of the boat.
The suggested retail prices for the new 700 Series models, available to consumers in January of 2009, range from $199.99 to $1199.99.
For more information contact Humminbird, 678 Humminbird Lane, Eufaula, AL 36027, or call the Consumer Resource Center at (800) 633-1468 or visit www.humminbird.com. The Marine Electronics Group of Johnson Outdoors Inc. consists of the Humminbird, Minn Kota and Cannon brands. Humminbird is a leading innovator and manufacturer of fishfinders, fishfinder/GPS combo units, chartplotters, marine radios and digital depth gauges. Products in the Humminbird line include 1100 Series, 900 Series , 700 Series, Matrix Series, 500 Series , 300 Series, Fishin Buddy , PiranhaMax , SmartCast and ICE Series. Minn Kota is the worlds leading manufacturer of electric trolling motors, as well as offers a complete line of battery chargers, Trim Tabs and marine accessories. Trolling motors include Terrova, PowerDrive V2, Fortrex, Maxxum, Edge, Vantage, Vector 3X, Traxxis, Endura, Riptide, Riptide SF, Riptide ST, Riptide SP, Engine Mount, E-Drive and Trim-N-Troll models. Cannon is the leader in controlled-depth fishing and includes a full line of downrigger products and accessories. Downriggers include Digi-Troll, Magnum, Uni-Troll, Easi-Troll, LakeTroll and Mini-Troll.

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798c SI Combo 798ci SI Combo (internal GPS) $999.99 MRP 798c SI Combo NVB 798ci SI Combo NVB (internal GPS)
* NVB features continental USA Navionics Gold and HotMaps charts preloaded to internal memory.

$1199.99 MRP

Features
Dual SD card slot 3 soft-key preset buttons Quick Disconnect Mount Optional in-dash mounting (internal GPS antenna is front-mounted) Temp included Speed capable

Specifications

Display Size: Display Pixel Matrix: Display Type: Sonar : 5" Diagonal 640V X 640H Color TFT LCD HD Side Imaging: Frequency: 445 kHz Coverage: 180 @ 10db Sonar: DualBeam PLUS Frequency: 200 kHz & 83 kHz Coverage: 20 & 60 @ 10db Target Separation: Power Output (max): GPS: Cartography Standard: Cartography Optional: 2 " 500 Watts (RMS); 4,000 Watts (Peak-to-Peak) 50-Channel (internal & external models) Humminbird UniMap Navionics: Gold, HotMaps, Platinum
788c Combo 788ci Combo (internal GPS) $649.99 MRP 788ci Combo NVB (internal GPS)

$849.99 MRP

Dual SD card slot 3 soft-key preset buttons Quick Disconnect Mount Optional in-dash mounting (internal GPS antennae is front-mounted) Temp included GPS Speed included
Display Size: Display Pixel Matrix: Display Type: Sonar: 5" Diagonal 640V X 640H Color TFT LCD DualBeam PLUS Frequency: 200 kHz & 83 kHz Coverage: 20 & 60 @ 10db Target Separation: Power Output (max): GPS: Cartography Standard: Cartography Optional: 2 " 500 Watts (RMS); 4,000 Watts (Peak-to-Peak) 50-Channel (internal & external models) Humminbird UniMap Navionics: Gold, HotMaps, Platinum

778c $499.99 MRP

3 soft-key preset buttons Quick Disconnect Mount Optional in-dash mounting (internal GPS antennae is front-mounted) Temp included Speed capable
Display Size: Display Pixel Matrix: Display Type: Sonar: 5" Diagonal 640V X 640H Color TFT LCD DualBeam PLUS Frequency: 200 kHz & 83 kHz Coverage: 20 & 60 @ 10db Target Separation: Power Output (max): 2 " 500 Watts (RMS); 4,000 Watts (Peak-to-Peak)

768 Combo $499.99 MRP

Single SD card slot 3 soft-key preset buttons Quick Disconnect Mount Optional in-dash mounting Temp included Speed capable
Display Size: Display Pixel Matrix: Display Type: 5" Diagonal 640V X 320H Monochrome FSTN LCD 16-level grayscale Sonar: DualBeam PLUS Frequency: 200 kHz & 83 kHz Coverage: 20 & 60 @ 10db Target Separation: Power Output (max): GPS: Cartography Standard: Optional: 2 " 500 Watts (RMS); 4,000 Watts (Peak-to-Peak) 50-Channel internal GPS Humminbird UniMap Navionics: Gold, Hot Maps

728 $299.99 MRP

3 soft-key preset buttons Quick Disconnect Mount Optional in-dash mounting Temp included Speed capable
Display Size: Display Pixel Matrix: Display Type: 5" Diagonal 640V X 320H Monochrome FSTN LCD 16-level grayscale Sonar: DualBeam PLUS Frequency: 200 kHz & 83 kHz Coverage: 20 & 60 @ 10db Target Separation: Power Output (max): 2 " 500 Watts (RMS); 4,000 Watts (Peak-to-Peak)

718 $199.99 MRP

Display Size: Display Pixel Matrix: Display Type: 5" Diagonal 320V X 320H Monochrome FSTN LCD 16-level grayscale Sonar: DualBeam PLUS Frequency: 200 kHz & 83 kHz Coverage: 20 & 60 @ 10db Target Separation: Power Output (max): 2 " 300 Watts (RMS); 2,400 Watts (Peak-to-Peak)