Humminbird 748 3D User Manual

748 3D Operations Manual

531879-1EN_A

Thank You!

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 the full benefit from all the features and applications of your Humminbird® product.

To contact our Customer Resource Center, call 1-800-633-1468 or visit our Web site at humminbird.com.

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.

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 product contains chemicals known to the State of California to cause cancer and/or reproductive harm.

WARNING! Do not travel at high speed with the unit cover installed. Remove the unit cover before traveling at speeds above 20 mph.

NOTE: Some features discussed in this manual require a separate purchase, and some features are only available on international models. Every effort has been made to clearly identify those features. Please read the manual carefully in order to understand the full capabilities of your model.

ENVIRONMENTAL COMPLIANCE STATEMENT: It is the intention of Humminbird® to be a responsible corporate citizen, operating in compliance with known and applicable environmental regulations, and a good neighbor in the communities where we make or sell our products.

WEEE DIRECTIVE: EU Directive 2002/96/EC “Waste of Electrical and Electronic Equipment Directive (WEEE)” impacts most distributors, sellers, and manufacturers of consumer electronics in the European Union. The WEEE Directive requires the producer of consumer electronics to take responsibility for the management of waste from their products to achieve environmentally responsible disposal during the product life cycle.

WEEE compliance may not be required in your location for electrical & electronic equipment (EEE), nor may it be required for EEE designed and intended as fixed or temporary installation in transportation vehicles such as automobiles, aircraft, and boats. In some European Union member states, these vehicles are considered outside of the scope of the Directive, and EEE for those applications can be considered excluded from the WEEE Directive requirement.

This symbol (WEEE wheelie bin) on product indicates the product must not be disposed of with other household refuse. It must be disposed of and collected for recycling and recovery of waste EEE. Humminbird® will mark all EEE products in

accordance with the WEEE Directive. It is our goal to comply in the collection, treatment, recovery, and environmentally sound disposal of those products; however, these requirements do vary within European Union member states. For more information about where you should dispose of your waste equipment for recycling and recovery and/or your European Union member state requirements, please contact your dealer or distributor from which your product was purchased.

ROHS STATEMENT: Product designed and intended as a fixed installation or part of a system in a vessel may be considered beyond the scope of Directive 2002/95/EC of the European Parliament and of the Council of 27 January 2003 on the restriction of the use of certain hazardous substances in electrical and electronic equipment.

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.

700 Series™, Fish ID+™, Humminbird®, RTS™, RTS Window™, Structure ID®, SwitchFire™, WhiteLine™, and X-Press™ Menu are trademarked by or registered trademarks of Humminbird®.

Power On the Unit 1

How Sonar Works 2

3D Sonar .................................................................................................................... 4

2D Sonar .................................................................................................................... 5

What’s on the 3D Sonar Display 6

What’s on the 2D Sonar Display 8

Understanding the 2D Sonar Display .................................................................... 10

Real Time Sonar (RTS™) Window .......................................................................... 10

SwitchFire™ ............................................................................................................ 11

Freeze Frame and Active Cursor.............................................................................. 11

Instant Image Update .............................................................................................. 11

Bottom Presentation ................................................................................................ 12

3D Sonar View.......................................................................................................... 16

2D Sonar View.......................................................................................................... 18

2D/3D Sonar Combo View ...................................................................................... 19

6-Beam Sonar View ................................................................................................ 20

2D Zoom View.......................................................................................................... 21

2D Big Digits View .................................................................................................. 22

What’s on the 700 Series™ Control Head 23

Key Functions 24

POWER/LIGHT Key .................................................................................................. 24

VIEW Key.................................................................................................................. 25

MENU Key ................................................................................................................ 25

4-WAY Cursor Control Key ...................................................................................... 25

EXIT Key.................................................................................................................... 26

Accessory Bus 27

The Menu System 28

Table of Contents

Start-Up Options Menu 29

Normal.................................................................................................................... 29

Simulator ................................................................................................................ 30

System Status........................................................................................................ 30

Self Test.................................................................................................................. 31

Accessory Test........................................................................................................ 31

PC Connect ............................................................................................................ 32

X-Press™ Menu 33

Main Menu 34

Quick Tips for the Main Menu

Note for all Menu Settings.................................................................................... 35

User Mode

(Normal or Advanced) ............................................................................ 36

.................................................................................. 35

Sonar X-Press™ Menu

(Sonar Views only)

3D Bottom Zoom (3D Sonar, 3D/2D Sonar Combo Views only).................................... 39

3D Lower Range 3D History ( 2D Sonar Window Reset View 6-Beam Sensitivity Sensitivity Upper Range Lower Range Chart Speed Bottom View Zoom Level

(3D Sonar, 3D/2D Sonar Combo, 6-Beam Sonar Views only).............. 39

3D Sonar, 3D/2D Sonar Combo Views only) .............................................. 39

(3D/2D Sonar Combo View only).................................................. 40

(3D Sonar, 3D/2D Sonar Combo Views only).............................................. 40

(6-Beam Sonar View only) .......................................................... 40

(2D Sonar, 2D Sonar Zoom, 2D Big Digits Views only) .................................. 41

(Advanced: 2D Sonar, 2D Big Digits Views only) .................................... 42

(2D Sonar, 2D Sonar Zoom, 2D Big Digits Views only) ............................ 42

(2D Sonar, 2D Sonar Zoom, 2D Big Digits Views Only) .............................. 43

(2D Sonar, 2D Sonar Zoom, 2D Big Digits Views Only) ............................ 43

(2D Zoom View only) .............................................................................. 43

Alarms Menu Tab 44

Depth Alarm............................................................................................................45

Fish ID Alarm ..........................................................................................................45

Low Battery Alarm ..................................................................................................45

Temp. Alarm............................................................................................................46

Alarm Tone..............................................................................................................46

Table of Contents

Sonar Menu Tab 47

3D Bottom Style (3D Sonar Views only) ...................................................................... 48

3D Frame Style

2D Beam Select........................................................................................................ 48

Surface Clutter ........................................................................................................ 49

SwitchFire™ ............................................................................................................ 49

Fish ID+™ ................................................................................................................ 50

Fish ID Sensitivity .................................................................................................... 51

Fish ID 3D Reference Real Time Sonar (RTS™) Window Zoom Width 83 kHz Sensitivity Depth Lines Noise Filter Max Depth Water Type

Setup Menu Tab 55

Units – Depth .......................................................................................................... 56

Units – Temp Units – Distance Units – Speed

User Mode................................................................................................................ 57

Language Triplog Reset

Restore Defaults ...................................................................................................... 57

Select Readouts Depth Offset Digits Format NMEA Output Speed Calibration

Demonstration.......................................................................................................... 61

Sound Control .......................................................................................................... 61

(3D Sonar Views only) ........................................................................ 48

(3D Sonar Views only) .............................................................. 52

(2D Sonar View only) .......................................... 52

(2D Zoom View only) .............................................................................. 52

(Advanced, 2D Sonar Views only).................................................... 53

(Advanced, 2D Sonar Views only).............................................................. 53

(Advanced) .............................................................................................. 54

(Advanced, 2D Sonar Views only) .............................................................. 54

(Advanced) .............................................................................................. 54

(International only) ................................................................................ 56

(with Temp/Speed or GPS Receiver) .................................................. 56

(with Temp/Speed or GPS Receiver) ...................................................... 56

(International only) ...................................................................................... 57

(with Temp/Speed or GPS Receiver) ........................................................ 57

(Advanced, 2D Sonar and 3D Sonar Views only).................................. 58

(Advanced)............................................................................................ 59

(Advanced) .......................................................................................... 59

(Advanced).......................................................................................... 60

(Advanced, with Temp/Speed only).................................................. 61

iii

Table of Contents

Views Menu Tab 62

Accessories Menu Tab 63

Troubleshooting 64

Fishing System Doesn’t Power Up........................................................................ 64

Fishing System System Defaults to Simulator with a Transducer Attached...... 64

Display Problems .................................................................................................. 65

Finding the Cause of Noise .................................................................................. 66

700 Series™ Fishing system Accessories 67

Specifications 68

Glossary 69

Contact Humminbird® 73

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 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 Web site at humminbird.com to order these accessories online or contact our Customer Resource Center at 1-800-633-1468.

Power On

Follow the instructions below to power on your Humminbird® control head.

748 Title Screen

1. Press the POWER/LIGHT key.

2. When the Title screen is displayed, press the MENU key to access the Start-Up Options Menu.

3. Use the 4-WAY Cursor Control key to select Normal (if there is a transducer attached to the control head) or Simulator (if there isn’t a transducer attached to the control head).

NOTE: See Start-Up Options Menu for more information.

• If a functioning transducer is connected, Normal operation will be

selected automatically at power up, and your Fishing System can be used on the water.

• If a transducer is not connected and you wait too long to select a

Start-Up Option, the system will default to whichever menu is already highlighted.

• In Simulator you can learn how to use your control head and save settings in advance for later use.

Power On

How Sonar Works

Sonar technology is based on sound waves. The 700 Series™ Fishing System uses sonar to locate and define structure, bottom contour and composition, as well as depth directly below the transducer.

Your 700 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 uses precision sound pulses or “pings“ which are emitted into the water in a teardrop-shaped beam.

The sound pulses “echo“ back from objects in the water such as the bottom, fish, and other submerged objects. The returned echoes are displayed on the LCD screen. Each time a new echo is received, the old echoes are moved across the LCD, creating a scrolling effect.

How Sonar Works

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 (PtP) 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.

How Sonar Works

3D Sonar

Your Fishing System uses a sixelement transducer that transmits at 455 kHz and is capable of reaching depths of 240 ft (75 m). Each transmitted beam is symmetrical and 16 degrees in width. The six beams are lined up next to each other to provide a total coverage of 53 degrees from side to side, and 16 degrees from front to back.

Using multiple narrow beams together gives you a wide area of coverage for terrain interpretation and fish location, without sacrificing the detail only a narrow beam can provide. Your Fishing System gathers information from a continuous series of these returned signals. It then interprets this information to create a detailed 3-dimensional view of the terrain passing beneath your boat as you travel across the water.

NOTE: Depth capability is affected by such factors as boat speed, wave action, bottom hardness, water conditions, and transducer installation.

How Sonar Works

2D Sonar

Your Fishing System also has the capability of displaying traditional 2-dimensional sonar information from either a 455 kHz beam or an 83 kHz beam.

The 455 kHz single beam has the advantage of providing increased sonar resolution but is limited to a depth capability of 240 ft (75 m). The 83 kHz single beam sonar has the advantage of providing sonar information to 1000 ft (330 m) but provides less resolution than the 455 kHz beam.

NOTE: Depth capability is affected by such factors as boat speed, wave action, bottom hardness, water conditions, and transducer installation.

How Sonar Works

What’s on the 3D Sonar Display

In 3D views, your Fishing System can display a variety of useful information

Depth - Water depth can be set to alarm when the water becomes too shallow.

Temperature - Water surface temperature.

Bottom Contour - Shows the shape of the

bottom derived from depth measurements on 6 beams. 3 bottom styles are available; the front edges of the bottom contour are outlined to create a visual anchor. The width of the bottom covered is approximately equal to the depth.

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 Fishing System can display the speed of the boat and can keep a Triplog of nautical or statute miles traveled.

NOTE: Entries in this view that list (with Temp/Speed or GPS Receiver) are available if the information from the GPS receiver will be displayed on the view.

What’s on the 3D Sonar Display

Boat/Direction Arrow - A simple, solid 3D boat is drawn when the Upper Depth Range is 0. A solid 3D arrow is drawn when the Upper Depth Range is not 0.

Upper and Lower Depth Range

Fish ID+™ - A fish icon will be shown at

the derived position of the fish. Six fish icon styles will be used to indicate the primary beam in which the fish was found. Left-facing fish indicate fish off the port side of the boat, while rightfacing fish indicate fish off the starboard side. Each fish icon is available in three different sizes. Larger fish icons are used to represent stronger returns. The icons used in the 2D Sonar View are identical to the icons used in the 3D Sonar View.

Battery Voltage - The voltage of the boat’s battery; can be set to alarm if the voltage falls below a certain point.

Frame - Provides a reference for bottom and Fish ID information. A Range of frame styles are available, from simple to complex.

What’s on the 3D Sonar Display

What’s on the 2D Sonar Display

The 700 Series™ Fishing System can display a variety of useful information

Depth - Water depth can be set to alarm when the water becomes too shallow.

Speed - If a Temp/Speed accessory is attached, the Fishing System can display the speed of the boat and can keep a Triplog of nautical or statute miles traveled.

Temperature - Water surface temperature.

Timer - Elapsed time with Temp/Speed

Accessory.

Distance - Distance traveled with Temp/Speed Accessory.

Average Speed - Average speed reading with Temp/Speed Accessory.

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 - Displays on the view when the cursor is active.

NOTE: Entries in this view that list (with Temp/Speed or GPS Receiver) are available if the information from the GPS receiver will be displayed on the view.

What’s on the 2D Sonar Display

Bait Ball

Hollow Fish Symbol (see Fish ID+™)

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 gray levels moving across the display at the same depth.

Structure - Where fish may be hiding.

Fish - The Fishing System 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+™ 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.

Active Cursor

RTS (Real Time Sonar) Window™

Battery Voltage - The voltage of the boat’s

battery. It can be set to alarm if the voltage falls below a certain point.

What’s on the 2D Sonar Display

Understanding the 2D Sonar Display

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. As both the boat and the targets (fish) may be moving, the returns are only showing a particular segment of time when objects were detected, not exactly where those objects are in relation to other objects shown on the display.

The returned sonar echoes are displayed on the screen. As a new echo is received, the historical data scrolls left across the view.

Real Time Sonar (RTS™) Window

A Real Time Sonar (RTS™) Window appears on the right side of the display in the Sonar View only. The RTS Window™ updates at the fastest rate possible for depth conditions and shows only the returns from the bottom, structure, and fish that are within the transducer beam. The RTS Window™ plots the depth and intensity of a sonar return (see Sonar Menu Tab: RTS Window™).

The Narrow RTS Window™ indicates the sonar intensity through the use of grayscale. The grayscale used matches the Bottom View grayscale setting (Inverse, StructureID WhiteLine™, Bottom Black) . The depth of the sonar return is indicated by the vertical placement of the return on the display depth scale.

What’s on the 2D Sonar Display

The Wide RTS Window™ indicates the sonar intensity through the use of a bar graph. The length of the

plotted return indicates whether the return is weak or strong. The depth of the sonar return is indicated by the vertical placement of the return on the display depth scale. The Wide RTS Window™ does not use grayscale.

SwitchFire™

SwitchFire™ controls how the sonar returns are displayed in the Sonar Views. SwitchFire™ settings are available in the Sonar Menu Tab.

To see the maximum sonar information available within the transducer beam so more fish arches and better jig tracking are shown, choose Max Mode.

To see less clutter and more fish size accuracy interpreted from the transducer beam, choose Clear Mode. See Sonar Menu Tab: SwitchFire™ for more information.

Freeze Frame and Active Cursor

Press any arrow on the 4-WAY Cursor Control key, and the screen will freeze and a cursor will be displayed. Use the 4-WAY Cursor Control key to move the cursor over a sonar return, and the depth of the sonar return will be displayed in the cursor dialog box.

NOTE: In 2D Sonar Views, the RTS Window™ continues to update in Freeze Frame.

To return to a scrolling display and exit Freeze Frame, press the EXIT key. Freeze Frame is available in the Sonar and Sonar Zoom Views.

Instant Image Update

Instant Image Update - You can change a variety of sonar menu settings (such as Sensitivity or Upper Range), and the adjustments will be shown instantly on the screen.

What’s on the 2D Sonar Display

Bottom Presentation

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.

Bottom Contour Profile with RTS Window™

Hard Bottom

Soft Bottom

Rocky Bottom

The sonar returns from the bottom, structure, and fish can be represented as Inverse, Structure ID®, WhiteLine™, or Black (Bottom Black). See Sonar X-Press™ Menu: Bottom View to set the Bottom View.

What’s on the 2D Sonar Display

Inverse is a method where weak returns are shown with dark pixels and strong 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 distinctive outline. This has the benefit of clearly defining the bottom on the display.

Black (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.

What’s on the 2D Sonar Display

Views

The sonar information from your Fishing System is displayed on the screen in a variety of easy-to-read views.

• Default View: When you first power up the control head, 2D Sonar View will be the default view.

• Cycle: When you press the VIEW key repeatedly, the display cycles through the available views on your screen. When you press the EXIT key repeatedly, the display cycles through the available views in reverse order.

• Customize: You can display or hide any view to suit your fishing preferences. See the following pages for more information about each View.

Views

To customize your view rotation:

1. Press the MENU key twice to access the tabbed Main Menu, then press the RIGHT Cursor key until the Views tab is selected.

2. Press the UP or DOWN Cursor keys to select a View.

3. Press the RIGHT or LEFT Cursor keys to change the status of the view from Hidden to Visible or vice versa.

To change the Digital Readouts:

Each view displays digital readout information (such as speed or time), which varies with the view selected and the accessory attached. The digital readouts on the Sonar View can be customized. See Setup Menu Tab: Select Readouts for more information.

1. Press the MENU key twice to access the tabbed Main Menu, then press the RIGHT Cursor key until the Setup tab is selected.

2. Press the DOWN Cursor key to highlight Select Readouts, and press the RIGHT Cursor key to access the Select Readouts submenu.

NOTE: If the Select Readouts option does not appear under the Setup tab, change the User Mode to Advanced.

3. Press the UP or DOWN Cursor keys to select a Readout position, then press the RIGHT or LEFT Cursor keys to choose what will be displayed in that position. To hide the data window, select Off.

Views

3D Sonar View

3D Sonar View displays a 3-dimensional representation of the bottom. The sonar returns from each of the six elements are combined to create this 3dimensional, wire-frame image. This graphic depiction of the bottom provides you with an effective tool for understanding the terrain beneath the boat.

• Digital Readouts: Depth is always displayed in the upper left hand corner. Temperature and speed are displayed if the temp/speed paddle wheel is connected or if a GPS receiver is connected.

• Location: The location of your boat in relation to the on-screen information is represented by the boat icon.

• Sonar Returns: The most recent sonar returns are charted on the upper right side of the screen and move to the lower left as new information is received. The width of coverage is approximately equal to the depth.

• Fish ID+: If a return meets certain criteria, one of 18 kinds of fish symbols will be assigned. There are three different size fish symbols to indicate the intensity of the return and each of the six beams has a unique set of fish symbols (see Sonar Menu Tab: Fish ID+™ for more information).

Views

3D Sonar View

Depth

Temperature

Triplog with

Timer,

Distance

Travelled,

and Average

Speed

Voltage

Boat Icon

Upper Depth Range

3D Reference Frame

Fish ID+™ Symbols

3D Bottom Contour

Lower Depth Range

To change the selected perspective:

In some situations, the 3D Sonar View and the 2D/3D Sonar View may not display certain information due to the slope of the terrain. An option is available to change the perspective, or viewpoint, so you can see the information that would otherwise be hidden by the terrain.

1. While in the selected view, use the 4-WAY Cursor Control key to change the perspective.

• Press the LEFT Cursor key to shift the viewpoint left, and press the RIGHT Cursor key to shift it right.

• Press the Up or Down Cursor keys to shift the point of view up or down.

2. Reset Perspective: Press the MENU key once and select Reset View from the X-Press™ Menu.

Views

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