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Humminbird 788c User Manual

Humminbird 788c
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Section Title
788c and 788ci Combo
Operations Manual
788c and 788ci Combo
Operations Manual
531687-1_C

Table of Contents

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Humminbird 788c Specifications

General IconGeneral
Sonar TypeDualBeam PLUS
GPSYes
ChartplottingYes
Depth Capability1500 ft
Maximum Depth1500 ft
Target Separation2.5 Inches
Power Output (RMS)500 Watts
Power Output (Peak to Peak)4000 Watts
TemperatureYes
BacklightYes
Power Input10-20 VDC
GPS TrackplottingYes
Waypoints3000
Routes50
Waterproof RatingIPX7
Display Size5 inches
Sonar Frequency200 kHz
Sonar Coverage20°
SpeedYes
CartographyYes
TracksYes
Power Output500 watts RMS / 4000 watts peak-to-peak
Frequency200 kHz

Summary

How Sonar Works

DualBeam PLUS™ Sonar

Explains the dual sonar beam configuration for wide coverage and depth.

QuadraBeam PLUS™ Sonar

Details the four-beam sonar for enhanced bottom imaging and side structure.

WideSide® Sonar

Describes the specialized side-looking transducer for broad coverage.

Universal Sonar 2

Covers the integrated transducer for Minn Kota trolling motors.

How GPS and Cartography Work

GPS Receiver Functionality

Explains how the GPS system determines position and provides navigation data.

Multi-Media Card (MMC)/SD Slot Usage

Details adding detailed maps, updating software, and exporting data.

What’s On the Sonar Display

Sonar Display Information

Lists key data displayed like depth, temperature, speed, and timer.

Understanding the Sonar Display

Explains how sonar returns are represented on the screen.

Bottom Presentation

Describes how bottom hardness and contour are displayed.

Views

Sonar View

The primary display for sonar returns and historical data.

Chart View

Displays cartography from built-in or external maps.

Snapshot and Recording View

Allows viewing saved screen snapshots and recordings.

Introduction to Navigation

Waypoints, Routes, and Tracks

Manages saved locations, planned paths, and boat's travel history.

Navigate to a Waypoint or Position

Provides guidance to selected destinations or cursor positions.

Man Overboard (MOB) Navigation

Activates safety feature to locate a person overboard.

Using Your 700 Series™ Control Head

Key Functions

Explains the purpose and operation of each button on the control unit.

Powering On the Unit

Start-Up Options Menu

Selects the operating mode upon powering on the device.

The Menu System

Main Menu

Organizes all system settings under tabbed headings.

X-Press™ Menu

Provides quick access to frequently used settings based on the current view.

Alarms Menu Tab

Depth Alarm

Alerts the user when a set depth is reached or exceeded.

Low Battery Alarm

Warns when the system's battery voltage drops too low.

Off Course Alarm

Alerts if the boat deviates from the planned route.

Sonar Menu Tab

Beam Select

Sets which sonar beam frequencies are displayed.

Fish ID+™

Enables advanced signal processing to identify fish.

Sensitivity

Adjusts the level of detail shown on the sonar display.

Transducer Select

Chooses which connected transducer the system will use.

Navigation Menu Tab

Waypoints

Manages saved locations, names, and icons.

Routes

Creates and manages navigation paths between waypoints.

Chart Orientation

Sets the map display to North-Up or Course-Up.

Setup Menu Tab

Units - Depth

Selects units for depth measurements (feet, meters).

User Mode (Normal or Advanced)

Customizes menu options for simplicity or advanced control.

Restore Defaults

Resets all system settings to factory defaults.

Select Readouts

Customizes which data windows are displayed on the sonar screen.

Troubleshooting

Fishing System Doesn’t Power Up

Steps to resolve issues when the unit does not turn on.

Display Problems

Addresses common issues with screen quality and information display.

Finding the Cause of Noise

Diagnoses and resolves sources of electrical or hydrodynamic noise.

Specifications

Glossary

Sonar Terms

Definitions of key sonar-related terminology and features.

GPS & Navigation Terms

Definitions of GPS and navigation concepts and acronyms.

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