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Humminbird 346c DI User Manual

Humminbird 346c DI
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531955-2EN_A
346c DI
Operations Manual
346c DI
Operations Manual

Table of Contents

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Humminbird 346c DI Specifications

General IconGeneral
Display Size3.5 inches
Display TypeColor TFT
Display Resolution320 x 240
Sonar Frequency200 kHz / 455 kHz
Target Separation2.5 inches
Depth Capability600 feet
Down ImagingYes
GPSNo
Frequency200 kHz / 455 kHz
Waterproof RatingIPX7
Display Pixel Matrix320 x 240
Sonar TypeDualBeam PLUS with Down Imaging

Summary

Power On

How Sonar Works

Down Imaging™™ Sonar

Explains the Down Imaging™™ technology, its razor-thin beams, and frequencies.

Dual Beam Ice Transducer

Details the optional XI 9 20 Ice Transducer and its selectable dual-frequency sonar.

What's on the 300 Series™ Control Head

Key Functions

POWER/LIGHT Key

Explains the function of the POWER/LIGHT key for powering on/off and adjusting display.

VIEW Key

Describes how to use the VIEW key to cycle through available display views.

MENU Key

Details how to access the Start-Up, X-Press™, and Main Menu systems.

4-WAY Cursor Control Key

Explains the multiple functions of the 4-WAY Cursor Control key for navigation and selection.

EXIT Key

Outlines the EXIT key's functions for canceling alarms, exiting menus, and cycling views.

What's on the Sonar Display

Understanding the Sonar Display

Explains that the display shows sonar returns over time, not a literal 3D representation.

Real Time Sonar (RTS™™) Window

Describes the RTS Window's function for displaying depth and intensity of sonar returns.

Sonar Colors and Bottom View

Explains how colors represent sonar return intensity and how to set them.

Structure ID®

Explains how Structure ID represents weak and strong sonar returns.

WhiteLine™

Highlights the strongest sonar returns in white for clearer bottom definition.

SwitchFire™

Controls how sonar returns are displayed in Sonar Views (Max Mode/Clear Mode).

Freeze Frame and Active Cursor

Explains how to freeze the display and use a cursor for detailed sonar analysis.

Instant Image Update

Allows menu setting adjustments to update instantly on the screen.

What's on the Down Imaging™™ Display

Understanding the Down Imaging™™ Display

Explains how Down Imaging™™ images are produced and how sonar history scrolls.

Interpreting the Display

Guides on interpreting light/dark parts, white streaks, and shadows in DI display.

Down Imaging™™ Sensitivity

Controls how sonar returns appear on the display and reduces clutter.

Freeze Frame and Active Cursor

Explains freezing the Down Imaging™™ display and using a cursor.

Views

Sonar View

Presents a historical log of sonar returns with the most recent on the right.

Sonar Zoom View

Provides a magnified view of the bottom and structure for detailed analysis.

Split Sonar View

Displays sonar returns from different frequencies side-by-side for comparison.

Big Digits View

Provides digital data in a large, easy-to-see format.

Down Imaging™™ View

Uses high-definition beams to produce detailed sonar data on the display.

Circular Flasher View

Displays sonar data in traditional flasher format with optional ice fishing features.

Down Imaging™™/Sonar Combo View

Shows traditional Sonar information on top and Down Imaging™™ sonar below.

The Menu System

Start-Up Options Menu

Allows selection of operating modes like Normal, Simulator, and System Status.

X-Press™™ Menu

Provides shortcuts to frequently-used settings based on the current view.

Main Menu

Organizes standard menu settings under tabs like Alarms, Sonar, and Setup.

User Mode (Normal or Advanced)

Sets menu system complexity, affecting the visibility of menu options.

Sonar X-Press™™ Menu

Sensitivity

Controls display detail and adjusts the sensitivity of all sonar frequencies.

Upper Range

Sets the shallowest depth range displayed on Sonar, Split Sonar, etc.

Lower Range

Sets the deepest depth range displayed by the unit.

Chart Speed

Determines the speed at which sonar information moves across the display.

Zoom Level

Sets the magnification level for the Sonar Zoom View.

Bottom Lock

Graphs the bottom constantly in the zoomed view for better fish visibility.

Bottom Range

Controls how much of the water column, measured from the bottom, is shown.

Down Imaging™™ X-Press™™ Menu

Down Sensitivity

Controls how sonar returns are displayed on the Down Imaging™™ Views.

DI Enhance

Allows adjustment of Sensitivity, Contrast, and Sharpness for the DI view.

Upper Range

Sets the shallowest depth range displayed on the Down Imaging™™ Views.

Lower Range

Sets the deepest depth range displayed by the unit.

Chart Speed

Determines the speed at which sonar information moves across the display.

DI Colors

Allows selection of color palettes for the Down Imaging™™ display.

Flasher X-Press™™ Menu

Sensitivity

Controls display detail and adjusts sensitivity of sonar frequencies.

Upper Range

Sets the shallowest depth range displayed on Sonar, Split Sonar, etc.

Lower Range

Sets the deepest depth range displayed by the unit.

Color Palette

Sets the colors used to display sonar returns in the Circular Flasher View.

Zoom Level

Sets the magnification level for the Circular Flasher View when Ice Fishing Mode is on.

Alarms Menu Tab

Depth Alarm

Sounds when the depth becomes equal to or less than the menu setting.

Fish ID Alarm

Sounds when the Fishfinder detects fish corresponding to the alarm setting.

Low Battery Alarm

Sounds when the input battery voltage drops below the set threshold.

Temp. Alarm

Sounds when the water temperature reaches the set alarm point.

Alarm Tone

Selects the pitch of the alarm sound.

Timer Setup

Allows creating settings and starting countdowns for the Timer.

Start Timer

Starts the Timer using saved countdown settings.

Stop Timer

Stops the Timer while it is counting down.

Sonar Menu Tab

Beam Select

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

Imaging Frequency

Selects frequency for Down Imaging™™ beams for image quality or sharpness.

Surface Clutter

Adjusts the filter to remove surface clutter noise.

SwitchFire™

Controls how sonar returns are displayed (Max Mode/Clear Mode).

Fish ID+™

Interprets sonar returns and displays fish symbols when conditions are met.

Fish ID Sensitivity

Adjusts the threshold of Fish ID+™ detection algorithms.

RTS Window™

Sets the RTS Window to Wide or Narrow, or turns it off.

Sonar Colors

Allows selection of color palettes for display on various views.

Bottom View

Selects the method used to represent bottom and structure on the display.

Zoom Width

Adjusts the width of the zoomed view on the Sonar Zoom View.

455 kHz Sensitivity

Adjusts the sensitivity of the 455 kHz beam.

Depth Lines

Divides the display into sections with horizontal depth lines.

Noise Filter

Adjusts the sonar Noise Filter to limit interference on the display.

Max Depth

Controls the maximum depth of operation.

Water Type

Configures the unit for operation in fresh or salt water.

Digital Depth Source

Specifies beams used to provide depth for digital readouts.

DI Pings

Selects which beams display returns in the Down Imaging™™ View.

Ice Fishing Mode

Controls how information is displayed in the Circular Flasher View.

DI Colors

Allows selection of color palettes for the Down Imaging™™ display.

Setup Menu Tab

Units - Depth

Selects units of measure for depth-related readouts.

Units - Temp

Selects units of measure for temperature-related readouts.

Units - Distance

Selects units of measure for distance-related readouts.

Units - Speed

Selects units of measure for speed-related readouts.

User Mode

Sets the menu system to Normal or Advanced.

Language

Selects the display language for menus.

Triplog Reset

Resets the Triplog to zero, showing timer, distance, and average speed.

Restore Defaults

Resets all menu settings to their factory defaults.

Select Views

Sets available views to hidden or visible in the view rotation.

Select Readouts

Sets information to display in fixed-position data windows on the screen.

Depth Offset

Adjusts digital depth readout to indicate depth from waterline or boat's keel.

Temp. Offset

Adjusts the temperature readout by the amount entered.

Digits Format

Adds a tenth decimal place to readouts like Temperature and Depth.

Speed Calibration

Adjusts the speed readout by the percentage entered.

Demonstration

Controls whether Demonstration Mode is visible or off.

Sound Control

Sets when the control head will beep or sound for key presses and alarms.

Maintenance

Control Head Maintenance

Lists precautions for using and cleaning the control head screen.

Transducer Maintenance

Provides information to maintain transducer operation and clean its face.

Troubleshooting

Fishfinder Doesn't Power Up

Lists checks for power issues, including cable connection, wiring, fuse, and voltage.

Fishfinder Defaults to Simulator with a Transducer Attached

Troubleshoots transducer detection issues if the unit defaults to Simulator mode.

Display Problems

Lists common display problems and their possible causes and solutions.

Finding the Cause of Noise

Identifies sources of electrical noise and interference affecting sonar reception.

346c DI Specifications

Glossary

Contact Humminbird®

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