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Humminbird 748 3D User Manual

Humminbird 748 3D
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531879-1EN_A
748 3D Operations Manual

Table of Contents

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Humminbird 748 3D Specifications

General IconGeneral
Waterproof RatingIPX7
Display Size5 inches
Sonar Coverage90 degrees
Target Separation2.5 inches
Power Output500 Watts (RMS)
Display Resolution480 x 480 pixels
Sonar TypeDual Beam
Beam Angle20 / 60 degrees
Sonar Frequency455 kHz (3D Sonar)

Summary

Power On Your Humminbird Unit

Understanding Sonar Technology

3D Sonar Overview

2D Sonar Overview

3D Sonar Display Elements

Key 3D Displayed Information

Key readouts like Depth, Temp, Bottom Contour, Speed, and Timer.

2D Sonar Display Elements

Key 2D Displayed Information

Key readouts like Depth, Speed, Temp, Timer, Distance, and Second Return.

Understanding the 2D Sonar Display

Real Time Sonar (RTS) Window

Displays depth and intensity of sonar returns in real-time.

Bottom Presentation and Styles

Bottom Representation Styles

How bottom types are charted and represented on screen.

Navigating Sonar Views

View Cycling and Customization

Using VIEW/EXIT keys and hiding/showing views.

3D Sonar View Details

3D Sonar View Elements

Specific elements and information shown in the 3D view.

2D Sonar View Details

2D Sonar View Elements

Specific elements and information shown in the 2D view, including Freeze Frame.

2D/3D Sonar Combo View

6-Beam Sonar View

2D Zoom View Functionality

Zoom Level and Range Views

How to use zoom levels and view different range perspectives.

2D Big Digits View

Control Head Button Functions

Control Head Buttons

Identifies and explains the purpose of each button on the unit.

Menu System Overview

Menu System Structure

Explains the structure of Start-Up, X-Press, and Main Menus.

Software Updates via PC Connect

Using the X-Press Menu

Navigating the Main Menu

Main Menu Tabs and Navigation

Accessing and using tabs like Alarms, Sonar, Setup, Views.

User Mode Settings

Normal vs. Advanced Mode

How user mode affects menu options and functionality.

Alarms Menu Configuration

Alarm Settings

Setting up audible and visual alarms for various conditions.

Sonar Menu Settings

Sonar Display Adjustments

Adjusting sonar display and performance options.

Setup Menu Settings

Unit and System Settings

Configuring units, language, defaults, and display formats.

Views Menu Customization

Troubleshooting Common Issues

Power and Transducer Issues

Problems with unit power and transducer detection.

Display Problem Solutions

Identifying and Resolving Noise

700 Series Accessories Guide

Supported Accessories

Overview of Temperature/Speed, GPS, Wireless Sonar, PC Connect.

System Technical Specifications

Key System Specifications

Depth, power, frequency, IPX rating, and other technical data.

Glossary of Sonar Terms

Sonar Terminology Definitions

Definitions for common sonar terms like Beam, Bottom Contour, Cavitation.

Contact Humminbird Support

Support Contact Methods

Ways to contact customer support via phone, email, or mail.

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