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www.reelschematic.com Thank You! www.reelschematic.com Thank you for choosing Humminbird®, America's #1 name in fishfinders. Humminbird® has built its reputation by designing and manufacturing topquality, thoroughly reliable marine equipment. Your Humminbird® is designed for trouble-free use in even the harshest marine environment.
www.reelschematic.com Table of Contents www.reelschematic.com How Sonar Works 1 Single Beam Sonar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Dualbeam Sonar (565 Fishfinders only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 QuadraBeam PLUS™ Sonar (575 Fishfinders only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
www.reelschematic.com Table of Contents www.reelschematic.com Sonar X-Press™ Menu 28 Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Upper Range (Advanced; Sonar, Split Sonar, Big Digits Views only). . . . . . . . . . . . . . . . . . 30 Lower Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Chart Speed . . . . . . . . . . . . . . . . .
www.reelschematic.com Table of Contents www.reelschematic.com Language (International only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Triplog Reset (with Temp/Speed only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Restore Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Select Views (Advanced). . . . . . . . . . . . . . . . . . . . .
www.reelschematic.com How Sonar Works www.reelschematic.com 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.
When all the echoes are viewed side by side, an www.reelschematic.com www.reelschematic.com 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.
www.reelschematic.com Single Beam Sonar www.reelschematic.com 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.
www.reelschematic.com QuadraBeam PLUS™ Sonar www.reelschematic.com (575 Fishfinders only) 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 35° 455 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 that’s always equal to twice your depth.
www.reelschematic.com What’s On the Display www.reelschematic.com 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.
www.reelschematic.com www.reelschematic.com 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.
www.reelschematic.com Views www.reelschematic.com 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 don’t have to exit the menu to apply the change to the screen).
www.reelschematic.com Sonar View www.reelschematic.com 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.
www.reelschematic.com Understanding Sonar History www.reelschematic.com It is important to understand the significance of the display. The display does NOT show a literal 3-dimensional representation of what is under the water. Each vertical band of data received by the control head and plotted on the display represents something that was detected by a sonar return at a particular time.
www.reelschematic.com Bottom Presentation www.reelschematic.com As the boat moves, the unit charts the changes in depth on the display to create a profile of the Bottom Contour. The type of bottom can be determined from the return charted on the display. A Hard Bottom such as compacted sediment or flat rock appears as a thinner line across the display. A Soft Bottom such as mud or sand appears as a thicker line across the display. Rocky Bottoms have a broken, random appearance.
Inverse is a method where weak returns are shown with dark pixels and strong www.reelschematic.com www.reelschematic.com returns with lighter pixels. This has the benefit of ensuring that weak signals will be clearly visible on the display. Structure ID® represents weak returns as light pixels and strong returns as dark pixels. This has the benefit of ensuring that strong returns will be clearly visible on the display.
WhiteLine® highlights the strongest sonar returns in white, resulting in a www.reelschematic.com www.reelschematic.com distinctive outline. This has the benefit of clearly defining the bottom on the display. Bottom Black displays all pixels below the bottom contour as black, regardless of signal strength. This has the benefit of providing a high contrast between the bottom and other sonar returns on the display.
www.reelschematic.com Sonar Zoom View www.reelschematic.com Sonar Zoom View increases the displayed resolution to separate sonar returns that are very close together, such as those caused by fish suspended close to the bottom or within structure. In Zoom View, the display is split to show a narrow slice of the full range view on the right and the zoomed view on the left.
www.reelschematic.com 200/83 kHz Split Sonar View www.reelschematic.com (575 Fishfinders only) 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.
www.reelschematic.com Big Digits View www.reelschematic.com 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.
www.reelschematic.com Side Beam View www.reelschematic.com (575 Fishfinders only) 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.
Classic layout: The top portion of the display presents a historical log of sonar www.reelschematic.com www.reelschematic.com 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.
Slanted layout: This layout presents the two 455 kHz side sonar beams and the www.reelschematic.com www.reelschematic.com 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.
www.reelschematic.com Key Functions www.reelschematic.com 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.
www.reelschematic.com MENU Key www.reelschematic.com The MENU key is used to access the menu system. Start-Up Options Menu - Press the MENU key during the power up sequence to view the Start-Up Options menu. X-Press™ Menu - Press the MENU key once for the X-Press™ Menu. The X-Press™ menu allows you to access frequently-used settings without having to navigate through the whole menu system. When the X-Press™ menu is displayed, you can use the UP or DOWN Cursor keys to move to a particular menu choice.
www.reelschematic.com Powering Up the Unit www.reelschematic.com Turn on your Fishfinder by pressing the POWER/LIGHT key. The Title screen is displayed until the Fishfinder begins operation. Your Fishfinder will begin Normal or Simulator operation, depending on the presence or absence of a transducer.
www.reelschematic.com The Menu System www.reelschematic.com 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.
User Mode (Normal or Advanced) - An Advanced Mode is provided for users www.reelschematic.com www.reelschematic.com 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.
www.reelschematic.com Start-Up Options Menu www.reelschematic.com Press the MENU key when the Title screen is displayed to access the Start-Up Options menu. 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.
www.reelschematic.com Simulator www.reelschematic.com 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.
www.reelschematic.com System Status www.reelschematic.com 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.
www.reelschematic.com Accessory Test www.reelschematic.com 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.
www.reelschematic.com Sonar X-Press™ Menu www.reelschematic.com 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.
www.reelschematic.com Sensitivity www.reelschematic.com Sensitivity controls how much detail is shown on the display and will adjust the sensitivity of all sonar frequencies. Increasing the sensitivity shows more sonar returns from small baitfish and suspended debris in the water; however, the display may become too cluttered. When operating in very clear water or greater depths, increased sensitivity shows weaker returns that may be of interest.
www.reelschematic.com Upper Range www.reelschematic.com (Advanced: Sonar, Split Sonar, Big Digits Views only) Upper Range sets the shallowest depth range that will be displayed on the Sonar, Split Sonar, and Big Digits Views. The Upper Range menu choice is available when User Mode is set to Advanced (see Setup Menu Tab: User Mode) and can only be accessed from the Sonar, Split Sonar, and Big Digits Views. Upper Range is often used with Lower Range.
www.reelschematic.com Lower Range www.reelschematic.com Lower Range sets the deepest depth range that will be displayed. Automatic is the default setting. When in automatic mode, the lower range will be adjusted by the unit to follow the bottom. Selecting a specific setting locks the depth range into Manual mode. Use both Upper and Lower Range together to view a specific depth range manually when looking for fish or bottom structure.
www.reelschematic.com Chart Speed www.reelschematic.com Chart Speed determines the speed at which the sonar information moves across the display, and consequently the amount of detail shown. A faster speed shows more information in the Sonar Views and is preferred by most anglers; however, the sonar information moves across the display quickly. A slower speed keeps the information on the display longer, but the bottom and fish details become compressed and may be difficult to interpret.
www.reelschematic.com Bottom View www.reelschematic.com Bottom View selects the method used to represent bottom and structure on the display. Inverse represents weak returns as dark pixels and strong returns as lighter pixels. This has the benefit of ensuring that weak signals will be clearly visible on the display. Structure ID® represents weak returns as light pixels and strong returns as dark pixels. This has the benefit of ensuring that strong returns will be clearly visible on the display.
www.reelschematic.com Quad Layout www.reelschematic.com (575 Fishfinders only, Side Beam View only) Quad Layout selects the method used to represent the sonar information from the two side-looking beams plus the down-looking beam to be presented on the Side Beam View, and is only available on the 575 Fishfinder X-Press™ menu when the Side Beam View is active. Use Quad Layout to change the way the Side Beam View is displayed. See Side Beam View for more information. To adjust the Quad Layout: 1.
www.reelschematic.com Sonar Menu Tab www.reelschematic.com Press the MENU key twice to access the Main Menu System and then press the RIGHT Cursor key to select the Sonar tab. NOTE: Menu choices will vary depending on system settings such as whether the unit is set for Advanced User mode.
www.reelschematic.com Beam Select www.reelschematic.com (575 Fishfinders only) Beam Select sets which sonar returns from the transducer will be displayed on the screen. When set to 200/83 kHz, the returns from both beams are blended by starting with the 83 kHz wide beam return, dimming it, and then overlaying it with the 200 kHz narrow beam return. The darker 200 kHz narrow beam sonar returns will stand out from the paler 83 kHz wide beam sonar returns.
www.reelschematic.com Fish ID+™ www.reelschematic.com Fish ID+™ uses advanced signal processing to interpret sonar returns, and will display a Fish Symbol when very selective requirements are met. When a fish is detected, a fish icon and its depth are displayed above the return that has been classified as being a fish. Three different fish size icons represent the intensity of the sonar return, and provide an indicator of relative fish size.
www.reelschematic.com Fish ID Sensitivity www.reelschematic.com Fish ID Sensitivity adjusts the threshold of the Fish ID+™ detection algorithms. Selecting a higher setting allows weaker returns to be displayed as fish. This is useful for identifying smaller fish species or baitfish. Selecting a lower setting displays fewer fish from weak sonar returns. This is helpful when seeking larger species of fish. Fish ID Sensitivity is used in conjunction with Fish ID+™.
www.reelschematic.com Zoom Width www.reelschematic.com Zoom Width adjusts the width of the Zoom window on the Sonar Zoom View. To change the Zoom Width Setting: 1. Highlight Zoom Width on the Sonar main menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Zoom Width setting. (Narrow, Medium, Wide, Default = Wide). 83 kHz Sensitivity (Advanced; 575 Fishfinders only) 83 kHz Sensitivity changes the sensitivity of the 83 kHz beam and is only available on 575 models.
www.reelschematic.com 455 kHz Balance www.reelschematic.com (Advanced; 575 Fishfinders only) 455 kHz Balance adjusts the sensitivity of the 455 kHz beam and is only available on 575 models. Increasing the sensitivity will display additional weak returns and decreasing the sensitivity will display fewer weak returns. The 455 kHz Balance menu choice is only available when User Mode is set to Advanced (see Setup Menu Tab: User Mode).
www.reelschematic.com Depth Lines www.reelschematic.com (Advanced) Depth Lines divide the display into four equal sections that are separated by three horizontal depth lines. The depth of each line is displayed along the depth scale. You can either turn Depth Lines On or Off. The Depth Lines menu choice is available when User Mode is set to Advanced (see Setup Menu Tab: User Mode). Depth Lines Depth Lines To change the Depth Lines setting: 1.
www.reelschematic.com Surface Clutter www.reelschematic.com (Advanced) Surface Clutter adjusts the filter that removes surface clutter noise caused by algae and aeration. The lower the setting, the less surface clutter will be displayed. The Surface Clutter menu choice is available when User Mode is set to Advanced (see Setup Menu Tab: User Mode). Surface Clutter To change the Surface Clutter setting: 1. Make sure you are in Advanced User Mode, then highlight Surface Clutter on the Sonar main menu. 2.
www.reelschematic.com Noise Filter www.reelschematic.com (Advanced) Noise Filter adjusts the sonar Noise Filter to limit interference on the display from sources such as your boat engine, turbulence, or other sonar devices. The Noise Filter menu choice is available when User Mode is set to Advanced (see Setup Menu Tab: User Mode). NOTE: The Off setting removes all filtering; Low, Medium and High1, High2, High3 settings add progressive filtering of the sonar returns.
www.reelschematic.com Water Type www.reelschematic.com (Advanced) Water Type configures your unit for operation in fresh or salt water. The Water Type menu choice is available when User Mode is set to Advanced (see Setup Menu Tab: User Mode). NOTE: In salt water, what would be considered a large fish might be 2 to 10 times bigger than a large fish in fresh water (depending on the type of fish you are seeking). The salt water setting allows for a greater range in fish size adjustment to account for this.
www.reelschematic.com Alarms Menu Tab www.reelschematic.com From any view, press the MENU key twice to access the Main Menu System. The Alarms tab will be the default selection. NOTE: When an alarm is triggered, you can silence it by pressing any key. The alarm will be silenced, and will not be triggered again until a new instance of the alarm condition is detected.
www.reelschematic.com Depth Alarm www.reelschematic.com Depth Alarm sounds when the depth becomes equal to or less than the menu setting. To change the Depth Alarm setting: 1. Highlight Depth Alarm on the Alarms main menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Depth Alarm setting. (OFF, 1 to 100 feet, or 0.5 to 30 meters [International Models only], Default = OFF) Fish ID Alarm Fish ID Alarm sounds when the Fishfinder detects fish that correspond to the alarm setting.
www.reelschematic.com Low Battery Alarm www.reelschematic.com Low Battery Alarm sounds when the input battery voltage is equal to or less than the menu setting. The battery alarm will only sound for the battery that is connected to the Fishfinder. The Low Battery Alarm should be set to warn you when the battery voltage drops below the safety margin that you have determined.
www.reelschematic.com Alarm Tone www.reelschematic.com Alarm Tone selects the pitch of the alarm sound. A brief tone will be produced as you adjust the Alarm Tone so that you can select the tone that you can hear best. To change the Alarm Tone setting: 1. Highlight Alarm Tone on the Alarms main menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Alarm Tone setting.
www.reelschematic.com Setup Menu Tab www.reelschematic.com From any view, press the MENU key twice to access the tabbed Main Menu System, then press the RIGHT cursor key until the Setup tab is selected. NOTE: Menu choices will vary depending on system settings such as whether the unit is set for Advanced User mode and whether an accessory is attached to the unit.
www.reelschematic.com Units - Depth www.reelschematic.com Units - Depth selects the units of measure for all depth-related readouts. To change the Units - Depth setting: 1. Highlight Units - Depth on the Setup menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Units Depth setting.
www.reelschematic.com Units - Speed www.reelschematic.com (with Temp/Speed only) Units - Speed selects the units of measure for speed-related readouts, and will appear in the menu if a Temp/Speed Accessory is connected and the paddlewheel has moved at least once. To change the Units - Speed setting: 1. Highlight Units - Speed on the Setup menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Units - Speed setting.
www.reelschematic.com Triplog Reset www.reelschematic.com (with Temp/Speed only) Triplog Reset resets the Triplog to zero, and will appear in the menu if a Temp/Speed Accessory is connected and the paddlewheel has moved at least once. The Triplog provides the following information: timer for elapsed time, distance traveled since last reset, and average speed. NOTE: See Setup Menu Tab: Select Readouts (Advanced) to find out how to display Triplog information on the screen. To Reset Triplog: 1.
www.reelschematic.com Select Views www.reelschematic.com (Advanced) Select Views sets the available views to either hidden or visible in the view rotation. The view will be removed from the view rotation if it is set to Hidden and will be displayed in the view rotation if it is set to Visible.
www.reelschematic.com Select Readouts www.reelschematic.com (Advanced; Sonar View only) Select Readouts sets individual digital readouts on the Sonar View.
To Select Readouts: www.reelschematic.com www.reelschematic.com 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.
www.reelschematic.com Temp Offset www.reelschematic.com (Advanced) 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.
www.reelschematic.com Troubleshooting www.reelschematic.com Before contacting the Humminbird® Customer Resource Center, please read the following section. Taking the time to review these troubleshooting guidelines may allow you to solve a performance problem yourself, and therefore avoid sending your unit back for repair.
www.reelschematic.com Display Problems www.reelschematic.com There are several main conditions or sources of possible interference that may cause problems with the quality of the information displayed on the control head. Look in the following table for some symptoms of display problems and possible solutions: Problem Possible Cause The control head loses power at high speeds.
www.reelschematic.com Finding the Cause of Noise www.reelschematic.com 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 Isolation Other electronic devices 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.
www.reelschematic.com 500 Series™ Fishfinder Accessories www.reelschematic.com 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.
www.reelschematic.com Specifications www.reelschematic.com Depth Capability .............................................................. 800 ft (250 m) Power Output .................. 250 Watts (RMS), 2000 Watts (Peak to Peak) Operating Frequency ............ 200 kHz Single Beam (515, 525 and 535) 200 kHz and 83 kHz Dual Beam™ (565 only) 200 kHz/83 kHz/455 kHz QuadraBeam PLUS™ (575 only) Area of Coverage................
POLICY ON ENVIRONMENTAL COMPLIANCE: www.reelschematic.com www.reelschematic.com It is the intention of Humminbird® to be a good corporate citizen and comply and meet all known and applicable environmental regulations in the areas and countries where our products are sold. We will promote and implement environmentally sound processes in support of national and international regulations.
www.reelschematic.com Glossary www.reelschematic.com Sonar Terms: Alarm, Depth: Depth Alarm is a user-controllable, audible alert that sounds when depth is less than or equal to the setting. Alarm, Temperature: Temperature Alarm is a user-controllable, audible alert that sounds when the water surface temperature equals the setting. Backlight: Backlight is a user-controllable illumination for the LCD for night and low light use.
Chart Speed: Chart Speed is a user-controllable feature that sets the speed at www.reelschematic.com www.reelschematic.com 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.
Feature Memory: Feature Memory is a Humminbird® feature that retains the www.reelschematic.com www.reelschematic.com 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.
Grayscale, Inverse: Inverse Grayscale is a Humminbird® feature that reverses the www.reelschematic.com www.reelschematic.com 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.
Hydrodynamic noise can be overcome by proper transducer installation. Many www.reelschematic.com www.reelschematic.com Humminbird® products have a Noise Filter menu setting that allows the user to clear the screen of noise that is difficult to eliminate. Pixels: Pixels are the "picture elements", or small square blocks, that make up the image on the LCD. Measured as a vertical by horizontal number (i.e. 640 V x 320 H), this key specification typically indicates the quality of resolution.
QuadraBeam PLUS™: QuadraBeam PLUS™ is a Humminbird® sonar www.reelschematic.com www.reelschematic.com configuration that uses four sonar beams for a more detailed bottom image. QuadraBeam™ uses the DualBeam PLUS™ configuration for downlooking, and also adds two additional beams to look to the left and right. The sonar beams pointing to the left and right provide the ability to spot fish and structure over a wide 90° area, and to identify on which side of the boat they are located. See DualBeam PLUS™.
Sensitivity: Sensitivity is a user feature that adjusts the sensitivity of the sonar www.reelschematic.com www.reelschematic.com system to show more or less detail in the water. Higher sensitivities are often preferred, however, when the water contains debris (silt, storm debris, etc.) and it can be difficult to pick out targets. Conversely, if sensitivity is set too low, relevant targets may be missed. SONAR: SONAR is the acronym for SOund and NAvigation Ranging.
Structure: Structure is a general term for objects on the bottom that present a www.reelschematic.com www.reelschematic.com discontinuity and are a likely attractor for fish. This includes bottom contour features (drop-offs, humps, and holes), standing structure (stumps, timbers, brush piles) and a wide range of other potential objects (sunken boats, reefs). Humminbird® units excel at showing structure with great detail over a wider area due to unique sonar configurations developed for the angler.
new range, and the old sonar information would continue to scroll off the screen www.reelschematic.com www.reelschematic.com at the old range. Transducer: The transducer is part of the sonar system, which mounts on the boat and is in contact with the water, that converts the electrical energy from the transmitter into sound energy, and that forms the sonar beam in turn. Internally, the transducer consists of one or more piezo electric disks that expand by very minute amounts to create the sound wave.
Viewing Angle: Viewing Angle is an attribute of an LCD that characterizes visibility www.reelschematic.com www.reelschematic.com 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.
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www.reelschematic.com www.reelschematic.com Contact Humminbird® Contact the Humminbird® Customer Resource Center in any of the following ways: By Telephone: (Monday - Friday 8:00 a.m. to 4:30 p.m. Central Standard Time): 1-800-633-1468 By e-mail: (typically we respond to your e-mail within three business days): custserv@johnsonoutdoors.
