Thank you for choosing Humminbird, America's #1 name in fishfinders. Humminbird has built its reputation by designing and manufacturing top-quality, thoroughly reliable marine equipment. Your Humminbird is designed for trouble-free use in even the harshest marine environment. In the unlikely event that your Humminbird does require repairs, we offer an exclusive Service Policy - free of charge during the first year after purchase, and available at a reasonable rate after the one-year period. For complete details, see the separate warranty card included with your unit. We encourage you to read this operations manual carefully in order to get full benefit from all the features and applications of your Humminbird product.

Thank You!

WARNING! This product contains chemicals known to the State of California to cause cancer and/or reproductive harm.
WARNING! Disassembly and repair of this electronic unit should only be performed by authorized service personnel. Any modification of the serial number or attempt to repair the original equipment or accessories by unauthorized individuals will void the warranty.
WARNING! This device should not be used as a navigational aid to prevent collision, grounding, boat damage, or personal injury. When the boat is moving, water depth may change too quickly to allow time for you to react. Always operate the boat at very slow speeds if you suspect shallow water or submerged objects.
ATTENTION INTERNATIONAL CUSTOMERS: Products sold in the U.S. are not intended for use in the international market. Humminbird international units provide international features and are designed to meet country and regional regulations. Languages, maps, time zones, units of measurement, and warranty are examples of features that are customized for Humminbird international units purchased through our authorized international distributors.
To obtain a list of authorized international distributors, please visit our web site at www.humminbird.com or contact our Customer Resource Center at (334) 687-6613.

Depth Alarm. 71 Fish ID Alarm. 71 Low Battery Alarm. 72 Temp Alarm. 72 Off Course Alarm. 73 Arrival Alarm. 73 Drift Alarm. 74 Alarm Tone. 74

Setup Menu Tab

Units - Depth. 76 Units - Temp (International only). 76 Units - Distance. 76 Units - Speed. 77 User Mode. 77 Language (International only). 77 Triplog Reset. 78 Restore Defaults. 78 Select Readouts (Advanced, Sonar view only). 79 Depth Offset (Advanced). 80 Temp Offset (Advanced). 81 Speed Calibration (Advanced, with Temp/Speed only). 81 Local Time Zone (Advanced). 82 Daylight Saving Time (Advanced). 82 Position Format (Advanced). 83
Time Format (Advanced, International only). 83 Date Format (Advanced, International only). 84 NMEA Output (Advanced). 85 Sonar. 86
Views Menu Tab Troubleshooting
300 Series Doesnt Power Up. Series Defaults to Simulator with a Transducer Attached. 87 Display Problems. 88 Finding the Cause of Noise. 89
Specifications Glossary Contact Humminbird
NOTE: Entries in this Table of Contents which list (International Only) are only available on products sold outside of the U.S. by our authorized international distributors. To obtain a list of authorized international distributors, please visit our web site at www.humminbird.com or contact our Customer Resource Center at (334) 687-6613. NOTE: Entries in this Table of Contents which list (with Temp/Speed only) require the purchase of separate accessories. You can visit our website at www.humminbird.com to order these accessories online or contact our Customer Resource Center at 1-800-633-1468.

How Sonar Works

Sonar technology is based on sound waves. The 300 Series Fishing System uses sonar to locate and define structure, bottom contour and composition, as well as depth directly below the transducer. Your 300 Series Fishing System 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 teardropshaped 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.

DualBeam PLUS Sonar

Your 300 Series Fishing System uses a 200/83 kHz DualBeam PLUS 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. 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.
How GPS and Cartography Work
Your 300 Series Fishing System also supports GPS and chartplotting, and uses GPS and sonar to determine your position, display it on a grid, and provide detailed underwater information. The Global Positioning System (GPS) is a satellite navigation system designed and maintained by the U.S. Department of Defense. GPS was originally intended for military use; however, civilians may also take advantage of its highly accurate position capabilities, typically within +/- 10 meters, depending on conditions. This means that 95% of the time, the GPS receiver will read a location within 10 meters of your actual position. Your GPS Receiver also uses information from WAAS (the Wide Area Augmentation System), EGNOS (the European Geostationary Navigation Overlay Service), and MSAS (the MTSAT Satellite Augmentation System) satellites if they are available in your area.
GPS uses a constellation of 24 satellites that continually send radio signals to the earth. Your present position is determined by receiving signals from up to 16 satellites and measuring the distance from the satellites. All satellites broadcast a uniquely coded signal once per second at exactly the same time. The GPS receiver on your boat receives signals from satellites that are visible to it. Based on time differences between each received signal, the GPS receiver determines its distance to each satellite. With distances known, the GPS receiver mathematically triangulates its own position. With once per second updates, the GPS receiver then calculates its velocity and bearing. The GPS Receiver included with your 300 Series Fishing System, allows you to combine easy-to-use FishingGPS chartplotter and navigation capabilities with advanced fishfinding. The following GPS functionality is currently supported by the 300 Series Fishing System: View current position View current track (breadcrumb trail) View precision speed and heading from your GPS receiver Save tracks, waypoints and routes Travel a route and navigate from one waypoint to the next. Your unit also comes with a built-in UniMap with a more detailed map of North America (Domestic models) or a more detailed map of Europe and Southeast Asia, including Australia and New Zealand (International models). Your 300 Series uses the GPS Receiver to determine the position of the boat automatically, and uses the zoom level settings on a particular view to select the best chart to display. See Viewing Cartography for more information.

Depth Upper Depth Range, Full Range View Upper Depth Range, Zoom View Full Range View Zoomed View Zoom Preview Box
Zoom Level Lower Depth Range, Zoom View
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. 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

Lower Depth Range

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 300 Series Fishing 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 Temperature Timer shows the time elapsed since Triplog was last reset Distance is the distance traveled since the Triplog was last reset Voltage - the battery voltage. Average Speed shows the speed since the Triplog was last reset

Circular Flasher View

Circular Flasher View displays Real Time Sonar (RTS) data in the traditional flasher format. Depth and temperature are always displayed. The digital readouts in the Flasher View cannot be customized.

Birds Eye View

Bird's Eye View - This view shows a 3-D, perspective view of the track and the charts land contour from a point above and behind the boat (the eye point). As the boat turns, the eye point moves to follow the boat. When you press the 4-WAY Cursor key in the Birds Eye View, the position of the eye point will shift. This allows you to move and turn the eye point so that you can look off to the sides, or even behind the boat. Pressing the RIGHT or LEFT arrow keys on the 4-WAY Cursor key turns the eye point right or left, while pressing the UP arrow key moves the eye point forward, and pressing the DOWN arrow key moves the eye point backward. Pressing the EXIT key moves the eye point back to its original position behind and above the boat.
Depth Latitude and Longitude Position of Boat

Land Contours

Speed of Boat

4-WAY Cursor Control Key

The 4-Way Cursor Control Key has multiple functions, depending on the situation: Use the DOWN or UP arrow keys to select a menu choice from the menu list, then use the LEFT or RIGHT arrow keys to change a menu setting.
NOTE: Menu choices are implemented and saved immediately - no further action is required.
In all Sonar views but the Big Digits view, pressing any 4-WAY Cursor Control key will activate Freeze Frame and will then allow you to position the cursor on the display.

MARK Key

Press the MARK key while in any view to mark the position of a waypoint, either at the current boat location, or, if the Cursor is active, at the current Cursor location.

GOTO Key

If the Cursor is active, pressing the GOTO key while in any view creates a waypoint and starts navigation towards that waypoint. If the Cursor is not active, pressing the GOTO key displays the list of waypoints, so that you can select the waypoint towards which you want to navigate.

ZOOM (+/-) Key

Press the - or + ZOOM keys while in any of the Navigation Views or the Sonar Zoom View to change the scale of the view to appear closer or farther away.

EXIT Key

The EXIT key has multiple functions, depending on the situation: If an alarm is sounding, pressing EXIT will cancel the alarm. Ifamenutabisselected,pressingEXITwillexitthemenumodeandreturntotheview. If a menu is active, pressing EXIT will return to the previous level in the menu system. Pressing EXIT will cycle through the available views in reverse order. If Freeze Frame is active, pressing EXIT will return to a scrolling display. If the Cursor is active, pressing EXIT will remove the cursor from the display.

Powering Up the Unit

Turn on your 300 Series Fishing System by pressing the POWER/LIGHT key. The Title screen is displayed until the 300 Series Fishing System begins operation. Your 300 Series Fishing System will begin Normal or Simulator operation, depending on the presence or absence of a transducer.

383c 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-PressTM Menu - The X-PressTM 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-PressTM Menu. When you select a menu item from the X-PressTM menu, the menu will collapse, leaving only the menu choice on the screen. Use the Up or Down Cursor keys to reactivate the X-PressTM menu.

To change the Trackpoint Interval setting: 1. Highlight Trackpoint Interval on the Navigation main menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Trackpoint Interval setting. (1 second, 5 seconds, 10 seconds, 15 seconds, 30 seconds or 60 seconds, Default = 15 seconds)
NOTE: During slow travel or drift, setting both Trackpoint Interval and Track Min Distance to small values will allow you to increase the track resolution.

Track Min Distance

Track Min Distance allows you to set a minimum distance of travel before a trackpoint is added to the track. The Track Min Distance menu choice is only available when User Mode is set to Advanced (see Setup Menu Tab: User Mode).
NOTE: Track Min Distance works in conjunction with Trackpoint Interval. Both conditions must be met before a trackpoint is added to the current track.
To change the Track Minimum Distance setting: 1. Make sure you are in Advanced User Mode, then highlight Track Min Distance on the Navigation main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Track Min Distance setting. (1 to 300 feet or 1 to 100 meters [International Units only], Default = 16 ft, 5 m) NOTE: During slow travel or drift, setting both Trackpoint Interval and Track Min Distance to small values will allow you to increase the track resolution.

Map Datum

Map Datum allows you to change the map coordinate system used by the 300 Series Fishing System to match those of a paper map. The Map Datum menu choice is only available when User Mode is set to Advanced (see Setup Menu Tab: User Mode). To change the Map Datum setting: 1. Make sure you are in Advanced User Mode, then highlight Map Datum on the Navigation main menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Map Datum setting. (Default = WGS 84)

Course Projection Line

Course Projection Line allows you to display or hide an arrow extending from the bow of the boat that projects your current course, and shows where the boat will go if you continue on your present course. To change the Course Project Line setting: 1. Highlight Course Projection Line on the Navigation main menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Course Projection Line setting (Hidden, Visible, Default = Hidden)

Lat/Lon Grid

Lat/Lon Grid allows you to display or hide a grid showing latitude and longitude lines. To change the Lat/Lon Grid setting: 1. Highlight Lat/Lon Grid on the Chart main menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Lat/Lon Grid setting. (Hidden, Visible, Default = Hidden)

Set Simulation Position

Set Simulation Position allows you to set the position of the boat used in the Simulator. The Set Simulation Position menu choice is only available when User Mode is set to Advanced (see Setup Menu Tab: User Mode). To set the Simulation Position: 1. Activate the cursor and move it to the coordinates from where you want the simulation to start.
NOTE: The cursor must be active in order for this procedure to work.
2. Make sure you are in Advanced User Mode, then highlight Set Simulation Position on the Chart main menu. 3. Use the RIGHT 4-WAY Cursor Control key to change the Simulation Position setting. A confirmation dialog box will appear to allow you to change your mind, or to confirm your choice. If the cursor was not active before you began this procedure, you will see an error message. Exit the menu, set the cursor, then try again.

Set Map Offset

Set Map Offset allows you to change the map offset used by the 300 Series. The Set Map Offset menu choice is only available when User Mode is set to Advanced (see Setup Menu Tab: User Mode).
NOTE: The Map Offset will be applied to all maps and not just the map that requires the correction. The Map Offset should be cleared if a different map is to be used.
To change the Map Offset setting: 1. Activate the cursor and move it to the location where the Map Offset will be applied.
2. Make sure you are in Advanced User Mode, then highlight Set Map Offset on the Chart main menu. 3. Use the RIGHT 4-WAY Cursor Control key to set the Map Offset. A confirmation dialog box will appear to allow you to change your mind, or to confirm your choice. If the cursor was not active before you began this procedure, you will see an error message. Exit the menu, set the cursor, then try again.

Clear Map Offset

Clear Map Offset allows you to clear the Map Offset. The Clear map Offset menu choice is only available when User Mode is set to Advanced (see Setup Menu Tab: User Mode) and a Map Offset is currently active. To Clear Map Offset: 1. Make sure you are in Advanced User Mode, then highlight Clear Map Offset on the Chart main menu. 2. Use the RIGHT 4-WAY Cursor Control key to clear the Map Offset.

Triplog Reset

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, or if the GPS Receiver is connected. 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. Highlight Reset Triplog on the Setup menu. 2. Use the RIGHT 4-WAY Cursor Control key to initiate Triplog Reset. 3. The Confirm dialog box will appear. To reset the Triplog, press the RIGHT Cursor key once more. To cancel Reset Triplog, press the LEFT Cursor key.

Restore Defaults

Restore Defaults resets ALL menu settings to their factory defaults. Use this menu choice with caution! To Restore Defaults: 1. Highlight Restore Defaults on the Setup menu. 2. Use the RIGHT 4-WAY Cursor Control key to initiate restoring defaults. 3. The Confirm dialog box will appear. To reset the defaults, press the RIGHT Cursor key once more. To cancel Restore Defaults, press the LEFT Cursor key.

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 5 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: Course Navigation Position Speed Temperature Time + Date Triplog Voltage.

Default Sonar View

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. (Course, Navigation, Position, Off, Speed, Temperature, Time+Date, 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%)

Local Time Zone

Local Time Zone selects your time zone in reference to the time reported by the GPS receiver when Time+Date is selected as a Digital Readout on the Sonar View (see Select Readouts). This menu choice is available only when in Advanced User Mode (see Setup Menu Tab: User Mode). To change the Local Time Zone: 1. Make sure you are in Advanced User Mode, then highlight Local Time Zone on the Setup menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Local Time Zone (Default = EST [UTC-5] - Eastern Standard Time).

Daylight Saving Time

Daylight Saving Time adjusts the time display to account for local Daylight Saving Time when Time+Date is selected as a Digital Readout on the Sonar View (see Select Readouts). Selecting On adds one hour to the time display adjusted for your local time zone. Selecting Off leaves the time display as adjusted for your local time zone. This menu choice is available only when in Advanced User Mode (see Setup Menu Tab: User Mode). To change the Daylight Saving Time setting: 1. Make sure you are in Advanced User Mode, then highlight Daylight Saving Time on the Setup menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to turn Daylight Saving Time On or Off. (Off, On, Default = Off)

Display Problems

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 The control head loses power at high speeds. Possible Cause If the power output of your boats engine is unregulated, the control head may be protecting itself using its over-voltage protection feature. Make sure the input voltage does not exceed 20 Volts. The transducer position may need to be adjusted. A mix of air and water flowing around the transducer (cavitation) may be interfering with the interpretation of sonar data. See your Installation Guide for suggestions on adjusting the transducer position. Electrical noise from the boats engine may be interfering with sonar reception. See Finding the Cause of Noise for more information. 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. 88
When the boat moves at higher speeds, the bottom disappears or suddenly weakens, or the display contains gaps.
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 re-appears. 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.

Target Separation: Target Separation is the measurement of minimum distance that a fishfinder needs to be able to recognize two very close objects as two distinct targets (i.e. two fish hanging very close, or a fish hanging very close to structure). Humminbird fishfinders provide a very good 2 1/2 inches of target separation in shallower than 100 feet of depth. Target separation decreases as depth increases due to the need for longer Pulse Width to achieve greater depth. See Pulse Width. Thermoclines: Thermoclines are water layer(s) of distinctly different temperatures that create a sonar reflection due to the density of the differing water temperatures. Typically a thermocline will appear as a continuous band across the display at some distance above the bottom contour. Thermoclines are of interest to anglers because fish will suspend above or below the thermocline as they seek the optimum temperature and oxygen levels. Time Variable Gain: Time Variable Gain is a processing step applied to the sonar return to "normalize" the data so that objects of equal size (i.e. fish) appear to be the same size, even if they are separated by a good distance. Time Variable Gain is a fundamental attribute of good sonar, but is often promoted as a feature. Total Screen Update: A Humminbird feature that refreshes and updates all the sonar information on the display when a range change occurs. Without Total Screen Update, only the most recent sonar information would be drawn to the new range, and the old sonar information would continue to scroll off the screen 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. This element also works in reverse, converting the returned sound energy back into an electrical signal that the receiver interprets. Transducers are available for many specific mounting applications for the boat, such as a transom mount, trolling motor mount, etc. Humminbird offers many sophisticated transducers, often with multiple piezo electric elements designed to form specifically-shaped sonar beams, providing the angler with superior tools for finding and catching fish. See Transmitter and SONAR. Transmitter: The transmitter and receiver are matched parts of the sonar system that send (transmit) and listen to (receive) the sonar signals, and work in conjunction with the transducer. Humminbird transmitters have an extremely fast cycling design that 99
can send signals up to 60 times per second, as well as produce the varying levels of power output needed for different depths and conditions. Additionally, the transmitter has the capability to create very precise sonar pulses needed for a high degree of target separation. Humminbird receivers are extremely sensitive, but within a narrow "bandwidth" to discriminate against noise from external sources. Additionally, the receiver offers a wide "dynamic range" which provides the ability to receive very strong signals alternating with very weak signals, without the strong signal overwhelming the weak signal. See Transducer and Noise. TripLog: TripLog is a Humminbird feature that provides an on-screen counter for Elapsed Time, Average Speed and Total Distance traveled, and requires a speed input to activate the feature. TripLog appears on the Big Digits View, and can be reset to zero through the TripLog menu. TrueArch: TrueArch is a Humminbird feature that provides true fish arches, not artificial arches or symbols. Humminbird units are capable of producing fish arches due to the wide 60 sonar beam of DualBeam PLUS, an extremely sensitive sonar receiver. See Fish Arch. 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. 100

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.
GPS & Navigation Terms:
Acquisition Time: The length of time that a GPS receiver typically takes to determine a position from at least three satellites. Humminbird GPS receivers provide very fast acquisition times (under one minute), permitting users to get out on the water faster. Alarm, Arrival: The audible alert that sounds when the boat is equal to or less than the alarm setting (25 feet3000 feet) from the location of the destination waypoint. Alarm, Drift: Drift Alarm is an audible alert that sounds when the boat is equal to or over the alarm setting (25 feet3000 feet) from the location where the alarm was turned on. Alarm, Off-Course: Off-Course Alarm is an audible alert that sounds when the boats distance from the intended Track, (Cross Track Error), is equal to or over the alarm setting (25 feet 3000 feet). See Track and Cross Track Error. Altitude: Altitude measures height above sea level. Altitude is a measurement that can be provided by GPS. Bearing (BRG): Bearing is the direction to a destination waypoint measured in degrees from North (i.e. 321, where 000 is North, 090 East, 180 is South, 270 is West). Chartplotter: Chartplotter describes a navigation device that shows Present Position on a Map, along with Tracks, Waypoints, and Routes. All Chartplotters are also considered Trackplotters. All Humminbird GPS Combo units are Chartplotters. See Trackplotter. 101
Cold Start: Cold Start refers to the procedure that a GPS receiver must perform when it does not have historical information regarding its current location. This procedure typically lasts for several minutes, and may be experienced upon first power up of the receiver, or if the receiver has been moved a great distance. Course Over Ground (COG): Course Over Ground is the current direction the boat is traveling measured in degrees from North (i.e. 321, where 000 is North, 090 East, 180 is South, 270 is West). When the Course Over Ground is equal to Bearing, the boat is said to be On Course and will arrive at the destination in the most efficient manner. COG is often confused with Heading. See Heading. Cross Track Error (XTE): Cross Track Error is the straight-line distance of the boat from the intended Track. XTE measures how far the boat is off course, and also triggers the Off Course Alarm. See Track. Differential GPS (DGPS): Differential GPS is a system to improve the position accuracy of the Department of Defense GPS through the use of secondary correction signals broadcast from ground stations around the coastal United States and on some inland waterways. These correction signals are provided by the USCG and received by an auxiliary Differential Beacon Receiver (DBR) that connects to the GPS receiver. The advent of WAAS has largely negated the need for the added expense of a DBR in the United States. Distance To Go: Distance To Go is the straight-line distance between Present Position and the Destination Waypoint. DTG and SOG (Speed Over Ground) are used to calculate Time To Go. See Time to Go and Speed Over Ground. Estimated Position Error (EPE): Estimated Position Error is a calculation that indicates the potential position inaccuracy the user may experience due to a variety of GPS factors which include satellite position in the sky, signal strength and others factors. Fix Type: Fix Type indicates whether the GPS receiver is providing 2D fix or 3D fix. A 2D fix requires only three satellites and provides only latitude and longitude. A 3D fix requires four or more satellites, and provides latitude, longitude and altitude. GPS: GPS is an acronym for Global Positioning System. GPS provides accurate position (latitude, longitude, altitude) information virtually anywhere on the earth through satellite technology and personal receivers on the ground. A series of geosynchronous satellites broadcast a unique signal toward the earth once per second. A GPS receiver, 102

such as that included with many Humminbird products, receives the signals from these satellites and is able to determine position based on very slight differences in the time each signal is received and the receivers knowledge of the location of each of the satellites. Heading: Heading describes the direction the boat is pointing and is measured in degrees (i.e. 321, where 000 is North, 090 East, 180 is South, 270 is West). Due to wind and waves, the boat is often traveling in a slightly different direction than it is heading, and therefore Heading is often confused with Course Over Ground. See Course Over Ground. Map Datum: A Map Datum refers to a particular survey of the earths surface that was referenced when creating a chart (i.e. WGS84). Since the earth is not flat, and not even consistently round, a mathematical model must be used to translate coordinates from the sphere of the earth to the flat surface of a chart. This mathematical model is the Map Datum. Historically, many different Map Datums have been used around the world to create maps; often a reference to the Map Datum can be found in the legend of a paper map. It is important to select the correct Map Datum setting in your fishfinder when comparing GPS position to a paper chart to avoid slight position inaccuracies. Almost all electronic charts use the WGS84 Map Datum and therefore, they do not require setting changes. MMC: MMC is an acronym for Multi Media Card. An MMC is a postage stamp-sized memory device used to store electronic data such a maps, waypoints, routes and other information. MMC is a very rugged format suitable for the marine environment, but it is not waterproof. The MMC is removable from Humminbird products, and can be used in a PC that is equipped with an appropriate card reader. MMC is the same format that many digital cameras use. See SD. North, Magnetic: North is the principle reference point of the compass (i.e. North is 000). Magnetic North relies on the earths magnetic field to align a metal pointer generally towards True North. However, due to local variations in the earths magnetic field around the globe, the difference between True North and Magnetic North can be greater than 10. See True North. North, True: North is the principle reference point of the compass (i.e. North is 000). True North uses the axis of the rotation of the earth as the reference for North and is constant for all points on the earth. Most GPS units default to True North as the setting. The GPS heading may vary from the boat compass heading because the compass uses 103

Navigation X-Press Menu (Navigation views only)
Waypoint [Name] (Only with an active cursor on a waypoint). 42 Cursor To Waypoint (Chart or Combo view only). 43 Save Current Track. 43 Clear Current Track. 43 Save Current Route (only when navigating). 44 Skip Next Waypoint (only when navigating). 44 Cancel Navigation (only when navigating). 45 Remove Target (only if Target is Active). 45
Remove Grid (only if Grid is Active). 46 Sonar Window (Combo view only). 46 Waypoint [Name] (Most recently-created waypoint). 47

Sonar Menu Tab

Beam Select. 49 Fish ID+TM. 50 Fish ID Sensitivity. 51 Real Time Sonar (RTS) Window. 51 Bottom View. 52 Zoom Width. kHz Sensitivity (Advanced). 53 Depth Lines (Advanced). 54 Surface Clutter (Advanced). 55 Noise Filter (Advanced). 56 Max Depth (Advanced). 56 Water Type (Advanced). 57

Navigation Menu Tab

Current Track. 59 Saved Tracks. 60 Waypoints. 61 Routes. 62 Chart Orientation. 63 North Reference. 63 Grid Rotation. 63 Trackpoint Interval. 64 Track Min Distance (Advanced). 64 Map Datum (Advanced). 65 Course Projection Line. 65 Delete All Nav Data (Advanced). 65

Chart Menu Tab 66

Chart Detail Level. 67 Map Borders. 67 Lat/Lon Grid. 68 Set Simulation Position (Advanced). 68 Set Map Offset (Advanced). 69 Clear Map Offset (Advanced). 69

Alarms Menu Tab

Depth Alarm. 71 Fish ID Alarm. 71 Low Battery Alarm. 72 Temp Alarm. 72 Off Course Alarm. 73 Arrival Alarm. 73 Drift Alarm. 74 Alarm Tone. 74

Setup Menu Tab

Units - Depth. 76 Units - Temp (International only). 76 Units - Distance. 76 Units - Speed. 77 User Mode. 77 Language (International only). 77 Triplog Reset. 78 Restore Defaults. 78 Select Readouts (Advanced, Sonar view only). 79 Depth Offset (Advanced). 80 Temp Offset (Advanced). 81 Speed Calibration (Advanced, with Temp/Speed only). 81 Local Time Zone (Advanced). 82 Daylight Saving Time (Advanced). 82 Position Format (Advanced). 83
Time Format (Advanced, International only). 83 Date Format (Advanced, International only). 84 NMEA Output (Advanced). 85 Sonar. 86
Views Menu Tab Troubleshooting
300 Series Doesnt Power Up. Series Defaults to Simulator with a Transducer Attached. 87 Display Problems. 88 Finding the Cause of Noise. 89
Specifications Glossary Contact Humminbird
NOTE: Entries in this Table of Contents which list (International only) are only available on products sold outside of the U.S. by our authorized International Distributors. To obtain a list of authorized International Distributors, please visit our website at www.humminbird.com or contact our Customer Resource Center at 1-800-633-1468 to locate the distributor nearest you. NOTE: Entries in this Table of Contents which list (with Temp/Speed only) require the purchase of separate accessories. You can visit our website at www.humminbird.com to order these accessories online or contact our Customer Resource Center at 1-800-633-1468.

Whats On the Display

The 300 Series Fishing System can display a variety of useful information about the area
Depth - water depth; can be set to alarm when the water becomes too shallow. Cursor - available in Freeze Frame and can be positioned in the Sonar View to provide depth of a sonar return and bottom depth below the cursor. Temperature - water surface temperature. Timer - Elapsed time with Temp/Speed Accessory or GPS Receiver. Distance - Distance traveled with Temp/Speed Accessory or GPS Receiver. Average Speed - Average speed reading with Temp/Speed Accessory or GPS Receiver. Speed - if a Temp/Speed accessory or GPS Receiver is attached, the FishFinder can display the speed of the boat, and can keep a Triplog of nautical or statute miles traveled. 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. Cursor Dialog Box - indicates cursor depth on the display and the depth of the bottom directly below the cursor. The Latitude and Longitude of the cursor position, the distance to travel to the cursor position and the bearing to the cursor position is shown with a GPSreceiver. A waypoint can be marked at the cursor position for later retrieval and use with a GPS receiver.
NOTE: Entries in this view that list (with Temp/Speed or GPS Receiver) are available if either only the information from the GPS receiver will be displayed on the view.
under and adjacent to your boat, including the following items:
High Sonar Intensity Return Bait Ball 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 colors moving across the display at the same depth. 83 kHz Blue Fish Symbol Fish - the FishFinder displays fish as arches and/or fish icons, and can be set to alarm when a fish of a certain size is detected. When a target is detected, a Fish ID+TM symbol appears on the display with the depth displayed above it. The size of the symbol indicates 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 Orange Fish Symbol Structure - where fish may be hiding.

Routes link two or more waypoints together to create a path for navigation, and are used in trip planning. You can link individual waypoints together by using the GOTO key. A route represents your intended navigation and shows the shortest path from each waypoint to the next. As you travel a route, staying on the route line is the most efficient way to get to your destination, although you should always look out for obstacles not shown on the chart. Your 300 Series Fishing System can store up to 50 routes that can each contain up to 50 waypoints. Tracks consist of detailed position history, and are displayed as a breadcrumb trail of trackpoints. The Current Track shows the position history since the unit was powered up (maximum of 20,000 trackpoints displayed). You can clear the Current Track or save it at any time. Your 300 Series Fishing System can store up to 25 saved tracks, each containing 20,000 trackpoints. The current track represents your actual path so far.
Save, Edit, or Delete a Waypoint
Save your current position as a waypoint: On any view, press the MARK key to save the current position of the boat as a waypoint. Save the cursor position as a waypoint: On the Chart or Combo view, use the Cursor key to designate the position you want to save as a waypoint. Then press the MARK key to save the marked position as a waypoint. Save a position from the sonar history: On any Sonar view, use the Cursor key to point to a feature in the sonar history (also called the Sonar Saver feature). Press the MARK key to create a waypoint at the location where that sonar reading was taken. The new waypoint will also record the depth at that location.
NOTE: When you save a waypoint by any of these methods, a numerical waypoint name is automatically assigned. You can edit the waypoint information later to give it a different name and select an icon to represent it (see Waypoint submenu on the Navigation Main Menu Tab).
Display the Waypoints Submenu: From any view, press the MENU key twice to display the Main Menu System, then use the RIGHT Cursor key to select the Navigation tab. Select Waypoints and press the RIGHT Cursor key to display the Waypoints submenu. Program a specific position as a waypoint: To create a waypoint that is NOT your current position, from the Waypoints submenu, select the Create option and press the RIGHT Cursor key. Use the Cursor keys to program a waypoint name, latitude, longitude, and icon before selecting Save. Edit a waypoint: From the Waypoints submenu, select Edit and press the RIGHT Cursor key to display a list of saved waypoints. Select the waypoint you want to edit and press the RIGHT Cursor key. Use the 4-WAY Cursor Control key to move from field to field, and the UP and DOWN Cursor keys to changes values once you are in a field. In the Waypoint Name, Latitude and Longitude fields, use the UP and DOWN Cursor keys to change the letter or number. All upper and lower case letters are available, as well as digits 0-9 and some punctuation characters. In the Waypoint Icon field, use the UP and DOWN Cursor keys to change the icon used to represent the waypoint on the Combo and Chart Views. You can exit these fields with the LEFT and RIGHT Cursor keys or by pressing the EXIT key. Select Save and press the RIGHT Cursor key to save your changes.

GOTO Key

If the Cursor is active, pressing the GOTO key while in any view creates a waypoint and starts navigation towards that waypoint. If the Cursor is not active, pressing the GOTO key displays the list of waypoints, so that you can select the waypoint towards which you want to navigate.

ZOOM (+/-) Key

Press the - or + ZOOM keys while in any of the Navigation Views or the Sonar Zoom View to change the scale of the view to appear closer or farther away.

EXIT Key

The EXIT key has multiple functions, depending on the situation: If an alarm is sounding, pressing EXIT will cancel the alarm. If a menu tab is selected, pressing EXIT will exit the menu mode and return to the view. If a menu is active, pressing EXIT will return to the previous level in the menu system. Pressing EXIT will cycle through the available views in reverse order. If Freeze Frame is active, pressing EXIT will return to a scrolling display. If the Cursor is active, pressing EXIT will remove the cursor from the display.

Powering Up the Unit

Turn on your 300 Series Fishing System by pressing the POWER/LIGHT key. The Title screen is displayed until the 300 Series Fishing System begins operation. Your 300 Series Fishing System will begin Normal or Simulator operation, depending on the presence or absence of a transducer.

383c 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-PressTM Menu - The X-PressTM 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-PressTM Menu. When you select a menu item from the X-PressTM menu, the menu will collapse, leaving only the menu choice on the screen. Use the Up or Down Cursor keys to reactivate the X-PressTM menu.

X-PressTM Menu

NOTE: The X-PressTM 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. Either the Sonar or Navigation X-PressTM Menu will appear, depending on the view you are in.
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, Navigation, Chart, Setup, and Views.
Main Menu System Normal User Mode
Press the MENU key twice for the Main Menu, then use the 4WAY Cursor LEFT or RIGHT key to select a tab, and use the DOWN or UP key to select a specific menu item under that tab, then 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.

Cancel Navigation

(only when Navigating)
Cancel Navigation discards the current route and exits Navigation Mode. This menu choice will only appear when you are currently navigating a route. This will not delete a previously-saved route. To Cancel Navigation: 1. Highlight Cancel Navigation on the Sonar X-PressTM menu. 2. Use the RIGHT 4-WAY Cursor Control key to initiate canceling navigation. 3. The Confirm dialog box will appear. To cancel navigation, press the RIGHT Cursor key once more. To avoid canceling navigation, press the LEFT Cursor key. 4. The Save Current Route dialog box will appear. Use the RIGHT 4-WAY Cursor key to save the route or the LEFT 4-WAY Cursor key to decline saving the route.
Navigation X-PressTM Menu

(Navigation views only)

The Navigation X-PressTM menu provides access to the settings most frequently used. Press the MENU key once while in the Bird's Eye View, the Chart or the Combo View to access the Navigation X-PressTM menu.
NOTE: Menu choices will vary depending on system settings, such as whether you are currently navigating.

Waypoint [Name]

(Only with an active cursor on a waypoint)
Waypoint [Name] allows you to view the Waypoints submenu for the waypoint under your cursor. To view the Waypoint [Name] Submenu: 1. Move the cursor onto an existing waypoint and press the MENU key once, or use Cursor to Waypoint to select a waypoint from a list of saved waypoints. 2. Highlight Waypoint[Name] on the Navigation X-PressTM menu. 3. Use the RIGHT 4-Way Cursor Control key to view the Waypoints submenu, which contains the following menu choices:

Waypoints Submenu

The Waypoint Submenu contains the following menu choices: Edit allows you to edit the Name, Position (Latitude and Longitude) and select the Icon that will be used to represent the waypoint in the Chart and Combo Views. Delete allows you to delete a waypoint from the list of saved waypoints. Target allows you to apply a target to a waypoint selected from the list of waypoints. Grid allows you to apply a trolling grid to a waypoint selected from the list of waypoints.

Cursor to Waypoint

(Chart or Combo view only)
Cursor to Waypoint allows you to quickly move the cursor to any saved waypoint, so that you can locate it or edit it.
NOTE: This X-PressTM menu item appears only if you have saved waypoints.

Cancel Navigation discards the current route and exits Navigation Mode. This menu choice will only appear when you are currently navigating a route. This will not delete a previously-saved route. To Cancel Navigation: 1. Highlight Cancel Navigation on the Navigation X-PressTM menu. 2. Use the RIGHT 4-WAY Cursor Control key to initiate canceling navigation. 3. The Confirm dialog box will appear. To cancel navigation, press the RIGHT Cursor key once more. To avoid canceling navigation, press the LEFT Cursor key. 4. The Save Current Route dialog box will appear. Use the RIGHT 4-WAY Cursor key to save the route or the LEFT 4-WAY Cursor key to decline saving the route.

Remove Target

(only if a Target is Active)
Remove Target removes the waypoint target from the display. This menu choice will only appear when a target has already been applied to a waypoint.
NOTE: See Add a Waypoint Target or Trolling Grid for more information.
To Remove a Target: 1. Highlight Remove Target on the Navigation X-PressTM menu. 2. Use the RIGHT 4-WAY Cursor Control key to remove the target.

Remove Grid

(only if a Grid is Active)
Remove Grid removes the waypoint grid from the display. This menu choice will only appear when a grid has already been applied to a waypoint.
To Remove a Grid: 1. Highlight Remove Grid on the Navigation X-PressTM menu. 2. Use the RIGHT 4-WAY Cursor Control key to remove the grid.

(Combo view only)

Sonar Window sets the size of the Sonar Window in the Combo View. Sonar Window can only be accessed from the Combo View. To Set the Size of the Sonar Window in the Combo View: 1. Highlight Sonar Window on the Navigation X-PressTM menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to adjust the size of the sonar window. (Wide, Medium, Narrow, Default = Medium)
(Most recently-created waypoint)
Waypoint [Name] allows you to view the waypoints submenu for the most recently created waypoint.
NOTE: You must have pressed the MARK key at least once since you last powered up the fishfinder for this menu choice to appear.
To view the Waypoint [Name] Submenu: 1. Move the cursor to the desired position and press the MARK key once to save a waypoint. 2. Highlight Waypoint[Name] on the Navigation X-PressTM menu. 3. Use the RIGHT 4-Way Cursor Control key to view the Waypoints submenu.

Waypoint [Name] Submenu

The Waypoint Submenu contains the following menu choices: Edit allows you to edit the Name, Position (Latitude and Longitude) and select the Icon that will be used to represent the waypoint in the Chart and Combo Views. Delete allows you to delete a waypoint from the list of saved waypoints. Go To allows you to select a waypoint and start navigation toward that waypoint, or add that waypoint to the end of the current route. Target allows you to apply a target to a waypoint selected from the list of waypoints. Grid allows you to apply a trolling grid to a waypoint selected from the list of waypoints.

Routes

Routes allows you to view the Routes submenu. To view the Routes Submenu: 1. Highlight Routes on the Navigation main menu. 2. Use the RIGHT 4-WAY Cursor Control keys to view the Routes submenu.

Routes Submenu

The Routes Submenu contains the following menu choices: Create allows you to create a new, empty route and add waypoints to it immediately. Edit allows you to select a previously-saved route and edit its name and the waypoints on it. Delete allows you to delete a route from a list of previously-saved routes. Travel allows you to select a previously-saved route to use as the current route; this menu setting also begins navigation on this route. Routes can be traveled in either the forward or reverse direction. Info displays information about the route, including the distance and bearing from each waypoint to the next.

Chart Orientation

Chart Orientation allows you to select whether the Chart and Combo Views should be drawn North-Up or Course-Up. To change the Chart Orientation setting: 1. Highlight Chart Orientation on the Navigation main menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Chart Orientation setting. (North-Up, Course-Up, Default = North-Up)
NOTE: The Chart Orientation setting does not apply to the Bird's Eye View.

North Reference

North Reference allows you to have bearings displayed with one of two orientations: True North or Magnetic North. To change the North Reference setting: 1. Highlight North Reference on the Navigation main menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the North Reference setting. (True, Magnetic, Default = True)

Grid Rotation

Grid Rotation allows you to set the orientation of the trolling grid in degrees, where a setting of 0 displays a standard North, South, East, West alignment. See Waypoints for information on how to set a Grid. To change the Grid Rotation setting: 1. Highlight Grid Rotation on the Navigation main menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Grid Rotation setting. (0 to 89, Default = 0)

Trackpoint Interval

Trackpoint Interval allows you to select the time period between trackpoints. The current track can only contain up to 20,000 trackpoints, so longer time periods cause the track to extend back further in time, but will be less detailed.

Set Map Offset

Set Map Offset allows you to change the map offset used by the 300 Series. The Set Map Offset menu choice is only available when User Mode is set to Advanced (see Setup Menu Tab: User Mode).
NOTE: The Map Offset will be applied to all maps and not just the map that requires the correction. The Map Offset should be cleared if a different map is to be used.
To change the Map Offset setting: 1. Activate the cursor and move it to the location where the Map Offset will be applied.
2. Make sure you are in Advanced User Mode, then highlight Set Map Offset on the Chart main menu. 3. Use the RIGHT 4-WAY Cursor Control key to set the Map Offset. A confirmation dialog box will appear to allow you to change your mind, or to confirm your choice. If the cursor was not active before you began this procedure, you will see an error message. Exit the menu, set the cursor, then try again.

Clear Map Offset

Clear Map Offset allows you to clear the Map Offset. The Clear map Offset menu choice is only available when User Mode is set to Advanced (see Setup Menu Tab: User Mode) and a Map Offset is currently active. To Clear Map Offset: 1. Make sure you are in Advanced User Mode, then highlight Clear Map Offset on the Chart main menu. 2. Use the RIGHT 4-WAY Cursor Control key to clear the Map Offset.
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.

Alarms Menu

Depth Alarm
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 Fishing System detects fish that correspond to the alarm setting. Fish ID Alarm will only sound if Fish ID+TM is on. For example, if you've set the Fish ID Alarm to sound for Large fish only, the Fish ID alarm will sound when a large-sized fish is detected.

To change the Fish ID Alarm setting: 1. Highlight Fish ID Alarm on the Alarms main menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Fish ID Alarm setting. (Off, All, Large/Medium, Large, Default = Off)
Off Large Large/Medium All

Low Battery Alarm

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 300 Series Fishing System. The Low Battery Alarm should be set to warn you when the battery voltage drops below the safety margin that you have determined. For instance, if you are running a trolling motor (battery operated), you would want to set the Low Battery Alarm to sound before the battery voltage drops too low for it to be used to start your main, gasoline-powered engine. To change the Low Battery Alarm setting: 1. Highlight Low Battery Alarm on the Alarms main menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Low Battery Alarm setting. (Off, 8.5V - 13.5V, Default = Off)

Temp Alarm

Temp Alarm sounds when the water temperature detected by the 300 Series reaches the Temp Alarm setting, which is either set in degrees Fahrenheit or Celsius [International Models only]. For example, if the Temp Alarm is set to 58 degrees Fahrenheit, and the water temperature falls from 60 degrees to 58 degrees, the Temp Alarm will sound. Similarly, if the water temperature rises from 56 degrees to 58 degrees, the Temp Alarm will also sound. To change the Temp Alarm setting: 1. Highlight Temp Alarm on the Alarms main menu. 2. Use the LEFT or RIGHT 4-Way Cursor Control keys to change the Temp Alarm setting. (Off, 33-120 [Fahrenheit], 0-50 [Celsius], Default = Off)

Off Course Alarm

Off Course Alarm sounds when the boat has moved too far off course based on the menu setting when navigating. Off Course Alarm allows you to set how far the boat is allowed to move off course before the Off Course Alarm will sound.

Off Course Limits

Arrival Alarm Circle
To change the Off Course Alarm setting: 1. Highlight Off Course Alarm on the Alarms main menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Off Course Alarm setting. (Off, 25 to 3000 feet, 10 to 1000 meters [International Models only], Default = 300 ft, 100 m)

Arrival Alarm

Arrival Alarm sounds when the boat has either exceeded the distance to the destination waypoint, or has entered the Arrival Alarm Circle, based on the menu setting when navigating. Arrival Alarm allows you to set how close the boat must be to the destination waypoint before the Arrival Alarm will sound. To change the Arrival Alarm setting: 1. Highlight Arrival Alarm on the Alarms main menu. 2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Arrival Alarm setting. (Off, 25 to 3000 feet, 10 to 1000 meters [International Models only], Default = 150 ft, 50 m) 73

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.

Sonar Echo Enhancement: Sonar Echo Enhancement is a Humminbird feature that describes the high degree of sonar sensitivity achieved through a combination of transmitter/receiver and software algorithms. The result of Sonar Echo Enhancement is to display virtually everything in the water that is of interest to the angler, including bait fish, game fish, thermoclines, weed beds, subtle structure, and more. Sonar Update Rate: Sonar Update Rate is the number of times per second that the transmitter/receiver sends and receives sonar signals. A very fast sonar update rate collects more information and provides a more detailed image of the bottom, fish and structure. Many Humminbird units operate at up to 40 times per second when in single frequency operation. Due to the limitation of the speed of sound in water, the update rate begins to slow as depth increases to deeper than 50 feet. In very shallow water (less than 10 feet), however, update rates as much as 60 times per second can be achieved. Speed: Speed is the rate at which the boat moves through the water. Boat speed can be measured as Speed Over Ground or Speed Through Water. Speed Over Ground is provided by GPS, and is the measurement of the boats progress across a given distance. Speed Through Water is provided by a speed paddlewheel, and is the measurement of the flow past the boat, which may vary depending on current speed and direction. Speed Through Water is most critical for anglers using downriggers, as it impacts the running depth of the down riggers. Speed Over Ground is optimal for navigation, as accurate destination times can be derived from this measurement. Humminbird products allow for input and display of both sources. Structure: Structure is a general term for objects on the bottom that present a 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. Structure ID: Structure ID is a Humminbird feature that describes the traditional grayscale method of presenting sonar information. See Grayscale. Surface Clutter: Surface Clutter is a phenomenon where sonar returns are reflected off of tiny objects near the surface of the water, including algae and even air bubbles. Typically, saltwater environments have significantly greater surface clutter than freshwater due to continuous wind and wave action that causes aeration at the surface. The Surface Clutter menu provides manual control to bias the default settings under extreme conditions. 97
Target Separation: Target Separation is the measurement of minimum distance that a fishfinder needs to be able to recognize two very close objects as two distinct targets (i.e. two fish hanging very close, or a fish hanging very close to structure). Humminbird fishfinders provide a very good 2 1/2 inches of target separation in shallower than 100 feet of depth. Target separation decreases as depth increases due to the need for longer Pulse Width to achieve greater depth. See Pulse Width. Thermoclines: Thermoclines are water layer(s) of distinctly different temperatures that create a sonar reflection due to the density of the differing water temperatures. Typically a thermocline will appear as a continuous band across the display at some distance above the bottom contour. Thermoclines are of interest to anglers because fish will suspend above or below the thermocline as they seek the optimum temperature and oxygen levels. Time Variable Gain: Time Variable Gain is a processing step applied to the sonar return to "normalize" the data so that objects of equal size (i.e. fish) appear to be the same size, even if they are separated by a good distance. Time Variable Gain is a fundamental attribute of good sonar, but is often promoted as a feature. Total Screen Update: A Humminbird feature that refreshes and updates all the sonar information on the display when a range change occurs. Without Total Screen Update, only the most recent sonar information would be drawn to the new range, and the old sonar information would continue to scroll off the screen 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. This element also works in reverse, converting the returned sound energy back into an electrical signal that the receiver interprets. Transducers are available for many specific mounting applications for the boat, such as a transom mount, trolling motor mount, etc. Humminbird offers many sophisticated transducers, often with multiple piezo electric elements designed to form specifically-shaped sonar beams, providing the angler with superior tools for finding and catching fish. See Transmitter and SONAR. Transmitter: The transmitter and receiver are matched parts of the sonar system that send (transmit) and listen to (receive) the sonar signals, and work in conjunction with the transducer. Humminbird transmitters have an extremely fast cycling design that 98

GPS & Navigation Terms:
Acquisition Time: The length of time that a GPS receiver typically takes to determine a position from at least three satellites. Humminbird GPS receivers provide very fast acquisition times (under one minute), permitting users to get out on the water faster. Alarm, Arrival: The audible alert that sounds when the boat is equal to or less than the alarm setting (25 feet3000 feet) from the location of the destination waypoint. Alarm, Drift: Drift Alarm is an audible alert that sounds when the boat is equal to or over the alarm setting (25 feet3000 feet) from the location where the alarm was turned on. Alarm, Off-Course: Off-Course Alarm is an audible alert that sounds when the boats distance from the intended Track, (Cross Track Error), is equal to or over the alarm setting (25 feet 3000 feet). See Track and Cross Track Error. Altitude: Altitude measures height above sea level. Altitude is a measurement that can be provided by GPS. Bearing (BRG): Bearing is the direction to a destination waypoint measured in degrees from North (i.e. 321, where 000 is North, 090 East, 180 is South, 270 is West). Chartplotter: Chartplotter describes a navigation device that shows Present Position on a Map, along with Tracks, Waypoints, and Routes. All Chartplotters are also considered Trackplotters. All Humminbird GPS Combo units are Chartplotters. See Trackplotter. 100
Cold Start: Cold Start refers to the procedure that a GPS receiver must perform when it does not have historical information regarding its current location. This procedure typically lasts for several minutes, and may be experienced upon first power up of the receiver, or if the receiver has been moved a great distance. Course Over Ground (COG): Course Over Ground is the current direction the boat is traveling measured in degrees from North (i.e. 321, where 000 is North, 090 East, 180 is South, 270 is West). When the Course Over Ground is equal to Bearing, the boat is said to be On Course and will arrive at the destination in the most efficient manner. COG is often confused with Heading. See Heading. Cross Track Error (XTE): Cross Track Error is the straight-line distance of the boat from the intended Track. XTE measures how far the boat is off course, and also triggers the Off Course Alarm. See Track. Differential GPS (DGPS): Differential GPS is a system to improve the position accuracy of the Department of Defense GPS through the use of secondary correction signals broadcast from ground stations around the coastal United States and on some inland waterways. These correction signals are provided by the USCG and received by an auxiliary Differential Beacon Receiver (DBR) that connects to the GPS receiver. The advent of WAAS has largely negated the need for the added expense of a DBR in the United States. Distance To Go: Distance To Go is the straight-line distance between Present Position and the Destination Waypoint. DTG and SOG (Speed Over Ground) are used to calculate Time To Go. See Time to Go and Speed Over Ground. Estimated Position Error (EPE): Estimated Position Error is a calculation that indicates the potential position inaccuracy the user may experience due to a variety of GPS factors which include satellite position in the sky, signal strength and others factors. Fix Type: Fix Type indicates whether the GPS receiver is providing 2D fix or 3D fix. A 2D fix requires only three satellites and provides only latitude and longitude. A 3D fix requires four or more satellites, and provides latitude, longitude and altitude. GPS: GPS is an acronym for Global Positioning System. GPS provides accurate position (latitude, longitude, altitude) information virtually anywhere on the earth through satellite technology and personal receivers on the ground. A series of geosynchronous satellites broadcast a unique signal toward the earth once per second. A GPS receiver, 101

Track: A Track is a series of saved points that define the past path of the boat. These Track Points are saved at regular time intervals. Tracks are a useful and quick method to see where youve been, and an easy guide to follow to get you back to the starting point. Generally, all GPS units have a limited number of Track Points that can be saved before the unit runs out of memory and begins erasing the first track points saved. Because of this, the user can adjust the Track Point Interval menu to increase the amount of time between when points are saved, and thus extend the distance covered by a track. Tracks can also be permanently saved to memory, and re-displayed at the users option. Track Line (TRK): The Track Line is the desired line of travel between two waypoints, and represents the most efficient path between the two points because it is a straight line. The TRK is measured in degrees (i.e. 321, where 000 is North, 090 East, 180 is South, 270 is West). See Cross Track Error, Course Over Ground. Trackplotter: Trackplotter describes a navigation device that shows Present Position, along with Track, Waypoint, and Routes, but NO MAP in the background. See Chartplotter. Trolling Grid: Trolling Grid is a Humminbird feature that displays a precise reference grid around a waypoint. This grid is used as a guide pattern for trolling around a specific area to assure a more efficient and complete coverage of that area. Trolling Grid resolution be changed by zooming in or out on the chart. The Trolling Grid can also be rotated on the display to orient it for optimal boat course for wave and wind conditions. UTC: UTC is an acronym for Universal Time Constant. UTC is the standard time used in navigation, and is the local time in Greenwich England. (UTC is equivalent to Greenwich Mean Time (GMT)). To display the correct Local Time in a Humminbird GPS unit, the user must use the Local Time Zone menu and select the time zone (i.e. EST, CST). WAAS: WAAS is an acronym for Wide Area Augmentation System. WAAS is complementary technology to GPS that provides enhanced accuracy through correction signals broadcast from Federal Aviation Administration WAAS satellites stationed over the USA. These secondary signals are automatically received by the standard Humminbird GPS Receiver. With WAAS signal, GPS accuracy is improved to within 3 meters 95% of the time. Outside the United States, regional governmental coalitions have created similar systems such as EGNOS (Europe) and MSAS (Japan). Waypoint: A Waypoint is the saved location (latitude, longitude) of a point of interest that is stored in a GPS receivers memory. This can include a marker buoy, dock, fishing 104