Page
Thank You
humminbird.com
Page
Power On
How Sonar Works
What’s on the Sonar Display
What’s on the Down Imaging™ Display
Views
What’s on the 300 Series™ Control Head
Key Functions
The Menu System
Start-UpOptions Menu
X-Press™Menu
Flasher
X-Press™
Menu
Alarms Menu Tab
Sonar Menu Tab
Setup Menu Tab
Troubleshooting
300 Series™ Fishfinder Accessories
Specifications
Glossary
Contact Humminbird®
Page
Power On
1.Press the POWER/LIGHT key
When the Title screen is displayed, press the MENU key to access the
If a transducer is not connected and you wait too long to select a
How Sonar Works
•Peak to Peak measures power output at the highest points
DualBeam PLUS™ Sonar
(DualBeam PLUS™ models only [345c])
Down Imaging™ Sonar
345c DI
Dual Beam Ice Transducer
Your Fishfinder supports the optional
beams, and both beams will cover the
definition, while the 60 degree beam
is affected by such factors as bottom
What’s on the Sonar Display
the area under your boat, including the following items:
Understanding the Sonar Display
Real Time Sonar (RTS™) Window
SwitchFire™
Instant Image Update
Bottom Presentation
Page
What’s on the Down Imaging™ Display
Page
Understanding the
Down Imaging™ Display
Interpreting the Display
Down Imaging™ Sensitivity
Views
Customize:
To customize your view rotation:
You can choose which views are hidden or visible in your view rotation
3.Press the UP or DOWN Cursor keys to select a View
To change the Digital Readouts:
Setup Menu Tab: Select Readouts
Sonar View
Digital Readouts
Sonar Zoom View
Zoomed View
numbers indicate the high and low range of the water which is being viewed
Split Sonar View
•Depth is displayed in the upper left hand corner
Big Digits View
Big Digits View provides digital data in a large, easy-to-seeformat
Big Digits View
Triplog
Down Imaging™ View
Circular Flasher View
Circular Flasher View
When Ice Fishing Mode is on
Set the Circular Flasher View Mode
1.Press the MENU key twice
Ice Fishing Mode: Off
Ice Fishing Mode: On
To activate the Depth Cursor:
Use the Depth Cursor to identify depth on the flasher display
Set up:
Activate:
4.Close the Cursor: Press the EXIT key
To activate Flasher Zoom:
3.Close the X-Press™Menu: Press the EXIT key
Adjust the Zoom Range:
Close Zoom:
Down Imaging™/Sonar Combo View
Freeze Frame:
What’s on the 300 Series™ Control Head
Key Functions
POWER/LIGHT Key
Power On the control head:
Power Off the control head:
Adjust the Backlight or the Display
MENU Key
The Menu System
Start-Up
Options Menu:
Main Menu:
EXIT Key
If an alarm is sounding
If a menu tab is selected
If a menu is active
From any view
The Menu System
The Menu System is divided into easy-to-usemenu modules as follows:
Start-Up
Options Menu:
•Main Menu: The Main Menu is a standard set of menu settings which
Normal
Simulator
System Status
Accessory Test lists the accessories connected to the system
X-Press™Menu
To use an X-Press™Menu:
1.In any view, press the MENU key once
Press the UP or DOWN Cursor keys to highlight an
3.Reactivate the X-Press™Menu by pressing the UP or DOWN Cursor keys
Main Menu
To use the Main Menu:
1.In any view, press the MENU key twice
2.Press the RIGHT or LEFT Cursor keys to highlight a menu tab
•Press the EXIT keyto move quicklyto thetop of thetab
Quick Tips for the Main Menu
Note for all Menu Settings
User Mode (Normal or Advanced)
Page
Sonar X-Press™Menu
(Sonar Views only)
Sensitivity
Upper Range
Lower Range
Auto:
Chart Speed
Bottom Lock
Bottom Range
(Sonar Zoom View only when Bottom Lock is On)
Down Imaging™
Imaging Sensitivity
Imaging Sensitivity
Increase the Imaging Sensitivity
Chart Speed
Flasher X-Press™Menu
(Circular Flasher View only)
provides a shortcut to your most
frequently-used
X-Press™
Sensitivity
Color Palette
(Circular Flasher View, Ice Fishing Mode only)
Choose from the following color palettes:
Palette 1: Green (weak), Yellow (medium), Red (strong)
Palette 1:
Page
Alarms Menu Tab
Depth Alarm
Depth Alarm
Fish ID Alarm
Fish ID Alarm
Low Battery Alarm
Temp. Alarm
Temp. Alarm
Alarm Tone
Alarm Tone
Sonar Menu Tab
Beam Select
Beam Select
83kHz
When set to
200 kHz
Imaging Frequency
Imaging Frequency
Surface Clutter
Surface Clutter
SwitchFire™
Fish ID+™
Fish ID Sensitivity
Fish ID Sensitivity
Real Time Sonar (RTS™) Window
Sonar Colors
and Big Digits View)
•Gray: Light Gray (weak) to Black (strong)
Gray:
•Green: Dark Green (weak) to Light Green (strong)
Zoom Width
Zoom Width
Views: Sonar Zoom View
83 kHz Sensitivity
(Advanced, DualBeam PLUS™ Sonar only [345c])
Depth Lines
Depth Lines
Noise Filter
Max Depth
Water Type
Water Type
Ice Fishing Mode
Ice Fishing Mode
Page
Setup Menu Tab
Units - Depth
Units - Depth
Units - Temp
Units - Temp
International Models only
User Mode
User Mode
Language
Triplog Reset
Triplog Reset
Select Views
Select Readouts
Select Readouts
Views
•Speed
Depth Offset
Depth Offset
Temp. Offset
Temp. Offset will adjust the temperature readout by the amount entered
Digits Format
Speed Calibration
(Advanced, with Temp/Speed only)
Speed Calibration
Demonstration
Troubleshooting
Fishfinder Doesn’t Power Up
•The power cable is properly connected to the Fishfinder control head
•The fuse is operational
•The battery voltage of the power connector is at least 10 Volts
Display Problems
Problem
Possible Cause
Finding the Cause of Noise
Low battery voltage may be affecting the power of signal transmission
Finding the Cause of Noise
Possible Source of Noise
Isolation
Other electronic devices
The boat’s engine
300 Series™ Fishfinder Accessories
Temperature/Speed:
humminbird.com
345c Specifications
Depth Capability
Power Output
2400 Watts (Peak to Peak)
345c DI Specifications
Area of Coverage
Glossary
Sonar Terms:
Beam (Sonar Beam)
Cone Angle
Cavitation
Page
Structure
Time VariableGain (TVG)
Zoom
Zoom, Bottom Lock
Contact the Humminbird® Customer Resource Center
in any of the following ways:
By Telephone:
By e-mail:
service@humminbird.com