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Humminbird 797C2 User Manual

Humminbird 797C2
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797c
2
GPS Chartplotter
Operations Manual
797c
2
GPS Chartplotter
Operations Manual
531519-1_B

Table of Contents

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Humminbird 797C2 Specifications

General IconGeneral
Display TypeColor TFT
GPSYes
ChartplottingYes
Waterproof RatingIPx7
Waypoints3000
Routes50
Power Output500 Watts (RMS)
Target Separation2.5 inches
Sonar Frequency200 kHz
Sonar Frequencies83/200 kHz
Transducer TypeDual Beam
Sonar TypeDual-beam
Max Depth1500 ft
Depth Capability1500 ft
GPS ReceiverInternal
Display Size5 inch
Sonar Coverage60° / 20°

Summary

How Sonar Works

Side Imaging Sonar

Provides a wide, precise survey of water area with detailed bottom topography.

DualBeam PLUS™ Sonar

Uses 200/83 kHz sonar with wide 60° coverage and a focused 20° center beam.

QuadraBeam PLUS™ Sonar

Adds two 455 kHz beams for wide 90° coverage, plus DualBeam PLUS™ below.

Universal Sonar 2

Integrated transducer for trolling motors, offering temperature sensing and DualBeam PLUS™ performance.

How GPS and Cartography Work

Multi-Media Card (MMC)/SD Slot

Used for optional-purchase cards containing detailed maps or software updates.

Software Updates

Update control head software via the MMC/SD slot with a software update file.

Understanding Side Imaging

What's On the Side Imaging Display

Explains recognizable features on the display like topography, bottom return, depth, speed, and shadows.

Side Imaging Technology: How It Works

Explains how side imaging uses precise sonar beams to create a picture-like image of the bottom.

Side Imaging: On the Water Interpretation

Provides tips for interpreting side imaging display, covering boat speed, navigation, and beam coverage.

What’s On the Sonar Display

Second Sonar Return

Describes a second return below the bottom contour, indicating bottom hardness.

Cursor Dialog Box

Shows cursor depth, bottom depth, lat/lon, distance, and bearing if GPS is active.

Views

Side Imaging View

Shows a shadowed right/left view of the bottom as the boat passes over.

Sonar/Side Combo View

Displays regular sonar and side imaging sonar in a split screen.

Sonar View

Presents historical log of sonar returns, depth, temperature, and speed.

Bird's Eye View

Shows a 3-D perspective view of the track and land contour.

Chart View

Displays cartography from built-in UniMap™ or optional map cards.

Combo View

Split screen with Chart View on left and Sonar View on right.

Key Functions

POWER/LIGHT Key

Turns the unit on/off and adjusts backlight/contrast.

MENU Key

Accesses the menu system, including Start-Up Options, X-Press™, and Main Menu.

GOTO Key

Creates waypoints, starts navigation, or activates Man Overboard (MOB) function.

The Menu System

Start-Up Options Menu

Options to select Normal, Simulator, System Status, or PC Connect upon startup.

X-Press™ Menu

Provides quick access to frequently-used settings without navigating the full menu system.

Man Overboard (MOB) Navigation

Navigation X-Press™ Menu

Waypoints

Allows viewing the Waypoints submenu for creating, editing, deleting, targeting, or gridding waypoints.

Routes

Allows viewing the Routes submenu for creating, editing, deleting, or traveling routes.

Sonar Menu Tab

Beam Select

Sets which sonar returns from the transducer will be displayed on the screen.

Noise Filter

Adjusts the sonar noise filter to limit interference from various sources.

Transducer Select

Allows selection of the transducer to use with the Fishing System.

Alarms Menu Tab

Depth Alarm

Alerts when the boat reaches a set depth or shallower.

Low Battery Alarm

Alerts when the input battery voltage drops below a critical level.

Off Course Alarm

Alerts when the boat moves too far off the intended navigation course.

Setup Menu Tab

Units - Depth

Selects units of measure for all depth-related readouts.

User Mode (Normal or Advanced)

Sets the menu system to Normal for simplicity or Advanced for more control.

Restore Defaults

Resets all menu settings to their factory defaults.

Troubleshooting

Fishing System Doesn’t Power Up

Troubleshooting steps if the system does not power up, checking cables, fuse, and battery voltage.

Display Problems

Addresses issues with control head power at high speeds or inconsistent sonar readings.

Specifications

Glossary

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