Humminbird 345C User manual

531726-1_A
345c Operations Manual
345c Operations Manual

Thank You!
Thank you for choosing Humminbird®, America’s #1 name in fishfinders.
Humminbird® has built its reputation by designing and manufacturing
top-quality, thoroughly reliable marine equipment. Your Humminbird® is
designed for trouble-free use in even the harshest marine environment. In
the unlikely event that your Humminbird® does require repairs, we offer an
exclusive Service Policy - free of charge during the first year after purchase,
and available at a reasonable rate after the one-year period. For complete
details, see the separate warranty card included with your unit. We
encourage you to read this operations manual carefully in order to get full
benefit from all the features and applications of your Humminbird® product.
To contact our Customer Resource Center, call 1-800-633-1468 or visit our
web site at www.humminbird.com.
WA NING! This device should not be used as a navigational aid to prevent collision,
grounding, boat damage, or personal injury. When the boat is moving, water depth may
change too quickly to allow time for you to react. Always operate the boat at very slow
speeds if you suspect shallow water or submerged objects.
WA NING! Disassembly and repair of this electronic unit should only be performed by
authorized service personnel. Any modification of the serial number or attempt to repair the
original equipment or accessories by unauthorized individuals will void the warranty.
WA NING! This product contains chemicals known to the State of California to cause
cancer and/or reproductive harm.
WA NING! Do not travel at high speed with the unit cover installed. Remove the unit cover
before traveling at speeds above 20 mph.
ENVI ONMENTAL COMPLIANCE STATEMENT: It is the intention of Humminbird® to be
a responsible corporate citizen, operating in compliance with known and applicable
environmental regulations, and a good neighbor in the communities where we make or sell
our products.
WEEE DI ECTIVE: EU Directive 2002/96/EC “Waste of Electrical and Electronic Equipment
Directive (WEEE)” impacts most distributors, sellers, and manufacturers of consumer
electronics in the European Union. The WEEE Directive requires the producer of consumer
electronics to take responsibility for the management of waste from their products to
achieve environmentally responsible disposal during the product life cycle.
NOTE: Some features discussed in this manual require a separate purchase, and
some features are only available on international models. Every effort has been made
to clearly identify those features. Please read the manual carefully in order to
understand the full capabilities of your model.

WEEE compliance may not be required in your location for electrical & electronic equipment
(EEE), nor may it be required for EEE designed and intended as fixed or temporary
installation in transportation vehicles such as automobiles, aircraft, and boats. In some
European Union member states, these vehicles are considered outside of the scope of the
Directive, and EEE for those applications can be considered excluded from the WEEE
Directive requirement.
This symbol (WEEE wheelie bin) on product indicates the product must not be
disposed of with other household refuse. It must be disposed of and collected for
recycling and recovery of waste EEE. Humminbird® will mark all EEE products in
accordance with the WEEE Directive. It is our goal to comply in the collection,
treatment, recovery, and environmentally sound disposal of those products; however, these
requirements do vary within European Union member states. For more information about
where you should dispose of your waste equipment for recycling and recovery and/or your
European Union member state requirements, please contact your dealer or distributor from
which your product was purchased.
OHS STATEMENT: Product designed and intended as a fixed installation or part of a
system in a vessel may be considered beyond the scope of Directive 2002/95/EC of the
European Parliament and of the Council of 27 January 2003 on the restriction of the use of
certain hazardous substances in electrical and electronic equipment.
300 Series™, DualBeam PLUS™, Fish ID+™, Humminbird®, RTS™, RTS Window™, Structure
ID®, SwitchFire™, WhiteLine™, and X-Press™ Menu are trademarked by or registered
trademarks of Humminbird®.
© 2009 Humminbird®, Eufaula AL, USA. All rights reserved.
ATTENTION INTERNATIONAL CU TOMER : Products sold in t e U.S. are not
intended for use in t e international market. Humminbird® international units provide
international features and are designed to meet country and regional regulations.
Languages, maps, time zones, units of measurement, and warranty are examples of
features t at are customized for Humminbird® international units purc ased t roug
our aut orized international distributors.
To obtain a list of aut orized international distributors, please visit our web site at
www.humminbird.com or contact our Customer Resource Center at [phone].

Power On the Unit 1
How Sonar Works 2
DualBeam PLUS™ Sonar .......................................................................................... 4
What’s On the Sonar Display 5
Understanding the Sonar Display ............................................................................ 7
Real Time Sonar (RTS™) Window ............................................................................ 7
SwitchFire™ .............................................................................................................. 8
Freeze Frame and Active Cursor................................................................................ 8
Instant Image Update................................................................................................ 8
Bottom Presentation .................................................................................................. 9
Views 11
Sonar View .............................................................................................................. 13
Sonar Zoom View .................................................................................................... 14
200/83 kHz Split Sonar View .................................................................................. 15
Big Digits View ........................................................................................................ 16
Circular Flasher View .............................................................................................. 17
What’s on the 300 Series™ Control Head 18
Key Functions 19
POWER/LI HT Key .................................................................................................. 19
VIEW Key ................................................................................................................ 19
MENU Key .............................................................................................................. 20
4-WAY Cursor Control Key ...................................................................................... 20
EXIT Key .................................................................................................................. 21
he Menu System 22
Table of Contents
i

ii
Start-Up Options Menu 23
Normal.................................................................................................................... 23
Simulator .............................................................................................................. 24
System Status ...................................................................................................... 24
Self Test.................................................................................................................. 25
Accessory Test........................................................................................................ 25
X-Press™ Menu 26
Main Menu 27
Quick Tips for the Main Menu .................................................................................. 28
Note for all Menu Settings .......................................................................................... 28
User Mode (Normal or Advanced) .............................................................................. 29
Sonar X-Press™ Menu (Sonar views only) 31
Sensitivity .............................................................................................................. 32
Upper Range (Advanced: Sonar, Split Sonar, Circular Flasher,
and Big Digits Views only) .................................................................................... 33
Lower Range ........................................................................................................ 33
Chart Speed .......................................................................................................... 34
Zoom Level (Sonar Zoom View only) .......................................................................... 34
Bottom Lock (Sonar Zoom View only) ........................................................................ 34
Bottom Range (Sonar Zoom View only when Bottom ock is On) .................................. 34
Alarms Menu ab 36
Depth Alarm .......................................................................................................... 37
Fish ID Alarm.......................................................................................................... 37
Low Battery Alarm ................................................................................................ 37
Temp. Alarm .......................................................................................................... 38
Alarm Tone ............................................................................................................ 38
Table of Contents

iii
Sonar Menu ab 39
Beam Select ............................................................................................................ 40
Surface Clutter ........................................................................................................ 41
SwitchFire™ ............................................................................................................ 41
Fish ID+™ ................................................................................................................ 42
Fish ID Sensitivity .................................................................................................... 43
Real Time Sonar (RTS™) Window .......................................................................... 43
Bottom View ............................................................................................................ 44
Zoom Width.............................................................................................................. 44
83 kHz Sensitivity (Advanced).................................................................................... 44
Depth Lines (Advanced) ............................................................................................ 45
Noise Filter (Advanced) .............................................................................................. 45
Max Depth (Advanced) .............................................................................................. 46
Water Type (Advanced) .............................................................................................. 46
Setup Menu ab 47
Units - Depth............................................................................................................ 48
Units - Temp (International only) ................................................................................ 48
Units - Distance (with Temp/Speed only) .................................................................... 48
Units - Speed (with Temp/Speed only) ........................................................................ 48
User Mode .............................................................................................................. 49
Language (International only)...................................................................................... 49
Triplog Reset (with Temp/Speed only) ........................................................................ 49
Restore Defaults ...................................................................................................... 49
Select Views (Advanced)............................................................................................ 50
Select Readouts (Advanced, Sonar View only) ............................................................ 50
Depth Offset (Advanced)............................................................................................ 51
Temp. Offset (Advanced) ............................................................................................ 51
Speed Calibration (Advanced, with Temp/Speed only).................................................. 51
Table of Contents

iv
roubleshooting 52
Fishfinder Doesn’t Power Up ................................................................................ 52
Fishfinder Defaults to Simulator with a Transducer Attached............................ 52
Display Problems .................................................................................................. 53
Finding the Cause of Noise .................................................................................. 54
300 Series™ Fishfinder Accessories 55
Specifications 56
Glossary 57
Contact Humminbird® 61
NOTE: Entries in this Table of Contents which list (International Only) are only
available on products sold outside of the U.S. by our authorized international
distributors. To obtain a list of authorized international distributors, please visit our
web site at www.humminbird.com or contact our Customer Resource Center at
[phone].
NOTE: Entries in this Table of Contents which list (with Temp/Speed only) require
the purchase of separate accessories. You can visit our web site at
www.humminbird.com to order these accessories online or contact our
Customer Resource Center at 1-800-633-1468.
NOTE: Some features discussed in this manual require a separate purchase, and
some features are only available on international models. Every effort has been
made to clearly identify those features. Please read the manual carefully in order to
understand the full capabilities of your model.
Table of Contents

1
ower On the Unit
Follow the instructions below to power on your Humminbird® control head.
1. Press the POWER/LI HT key.
2. When the Title screen is displayed, press the MENU key to access the
Start-Up Options Menu.
3. Use the 4-WAY Cursor Control key to select Normal (if there is a
transducer attached to the control head), or Simulator (if there isn’t a
transducer attached to the control head).
NOTE: See Start-Up Options Menu for more information.
•If a functioning transducer is connected, Normal operation will be
selected automatically at power up, and your Fishfinder can be
used on the water.
•If a transducer is not connected and you wait too long to select a
Start-Up Option, the system will default to whichever menu is
already highlighted.
• In Simulator you can learn how to use your control head and save
settings in advance for later use.
345c Title creen
Power On the Unit

2
How Sonar Works
Sonar technology is based on sound waves. The 300 Series™ Fishfinder uses
sonar to locate and define structure, bottom contour and composition, as well
as depth directly below the transducer.
Your 300 Series™ Fishfinder sends a sound wave signal and determines
distance by measuring the time between the transmission of the sound wave
and when the sound wave is reflected off of an object; it then uses the reflected
signal to interpret location, size, and composition of an object.
Sonar is very fast. A sound wave can travel from the surface to a depth of
240 ft (70 m) and back again in less than 1/4 of a second. It is unlikely that your
boat can “outrun“ this sonar signal.
SONAR is an acronym for SOund and
NAvigation Ranging. Sonar uses precision
sound pulses or “pings“ which are emitted
into the water in a teardrop-shaped beam.
The sound pulses “echo“ back from objects
in the water such as the bottom, fish, and
other submerged objects. The returned
echoes are displayed on the LCD screen.
Each time a new echo is received, the old
echoes are moved across the LCD, creating
a scrolling effect.
How Sonar Works

3
When all the echoes are viewed side by side, an
easy to interpret “graph“ of the bottom, fish, and
structure appears.
The sound pulses are transmitted at various
frequencies depending on the application. Very
high frequencies (455 kHz) are used for greatest
definition but the operating depth is limited. High
frequencies (200 kHz) are commonly used on
consumer sonar and provide a good balance
between depth performance and resolution. Low
frequencies (83 kHz) are typically used to achieve
greater depth capability.
The power output is the amount of energy
generated by the sonar transmitter. It is commonly
measured using two methods:
• Root Mean Square (RMS) measures power
output over the entire transmit cycle.
• Peak to Peak measures power output at the
highest points.
The benefits of increased power output are the
ability to detect smaller targets at greater
distances, ability to overcome noise, better high
speed performance and enhanced depth capability.
How Sonar Works