Hummingbird Communications 300 Series User manual

531955-1EN_A
345c and 345c DI
Operations Manual
345c and 345c DI
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 humminbird.com.
WAR I G! 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.
WAR I G! 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.
WAR I G! This product contains chemicals known to the State of California to cause
cancer and/or reproductive harm.
WAR I G! Do not travel at high speed with the unit cover installed. Remove the unit cover
before traveling at speeds above 20 mph.
E VIRO ME TAL COMPLIA CE STATEME T: 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 DIRECTIVE: 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.
OTE: 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.
ROHS STATEME T: 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™, Down Imaging™, DualBeam PLUS™, Fish ID+™, Humminbird®, RTS™, RTS
Window™, Structure ID®, SwitchFire™, WhiteLine™, and X-Press™ Menu are trademarked by
or registered trademarks of Humminbird®.
Baekmuk Batang, Baekmuk Dotum, Baekmuk ulim, and Baekmuk Headline are registered
trademarks owned by Kim Jeong-Hwan.
© 2011 Humminbird®, Eufaula AL, USA. All rights reserved.
ATTENTION INTERNATIONAL CU TOMER : Produ ts sold in the U.S. are not
intended for use in the international market. Humminbird® international units provide
international features and are designed to meet ountry and regional regulations.
Languages, maps, time zones, units of measurement, and warranty are examples of
features that are ustomized for Humminbird® international units pur hased through
our authorized international distributors.
To obtain a list of authorized international distributors, please visit our Web site at
humminbird.com or onta t our Customer Resour e Center at [phone].

Power On 1
How Sonar Works 2
DualBeam PLUS™ Sonar (DualBeam P US™ models only [345c])................................ 4
Down Imaging™ Sonar (Down Imaging™ models only [345c DI]) ................................ 5
Dual Beam Ice Transducer (optional-purchase XI 9 20 Ice Transducer only) .................. 6
What’s on the Sonar Display 7
Understanding the Sonar Display .......................................................................... 9
Real Time Sonar (RTS™) Window .......................................................................... 9
SwitchFire™ .......................................................................................................... 10
Freeze Frame and Active Cursor .......................................................................... 10
Instant Image Update............................................................................................ 10
Bottom Presentation.............................................................................................. 11
What’s on the Down Imaging™ Display
(Down Imaging™ models only [345c DI]) 13
Understanding the Down Imaging™ Display........................................................15
Interpreting the Display..........................................................................................15
Down Imaging™ Sensitivity ..................................................................................16
Freeze Frame and Active Cursor ............................................................................16
Views 17
Sonar View ............................................................................................................ 19
Sonar Zoom View .................................................................................................. 20
Split Sonar View .................................................................................................... 21
Big Digits View ...................................................................................................... 22
Down Imaging™ View (Down Imaging™ models only [345c DI])................................ 23
Circular Flasher View ............................................................................................ 24
Down Imaging™/Sonar Combo View (Down Imaging™models only [345c DI]) ........ 29
Table of Contents
i

What’s on the 300 Series™ Control Head 30
Key Functions 31
POWER/LI HT Key .............................................................................................. 31
VIEW Key .............................................................................................................. 31
MENU Key ............................................................................................................ 32
4-WAY Cursor Control Key .................................................................................. 32
EXIT Key ................................................................................................................ 33
he Menu System 34
Start-Up Options Menu 35
Normal.................................................................................................................... 35
Simulator .............................................................................................................. 36
System Status ...................................................................................................... 36
Self Test.................................................................................................................. 37
Accessory Test........................................................................................................ 37
X-Press™ Menu 38
Main Menu 39
Quick Tips for the Main Menu .................................................................................. 40
Note for all Menu Settings .......................................................................................... 40
User Mode (Normal or Advanced) .............................................................................. 41
Sonar X-Press™ Menu (Sonar Views only) 43
Sensitivity .............................................................................................................. 44
Upper Range
(Advanced: Sonar, Split Sonar, Circular Flasher, and Big Digits Views only) ................ 45
Lower Range ........................................................................................................ 45
Chart Speed .......................................................................................................... 46
ii
Table of Contents

Zoom Level (Sonar Zoom View only) .......................................................................... 46
Bottom Lock (Sonar Zoom View only) ........................................................................ 46
Bottom Range (Sonar Zoom View only when Bottom ock is On) .................................. 47
Down Imaging™ X-Press™ Menu (Down Imaging™ Views only [345c DI]) 48
Imaging Sensitivity ................................................................................................ 49
Upper Range (Advanced, Down Imaging™ Views only) .............................................. 49
Lower Range .......................................................................................................... 50
Chart Speed............................................................................................................ 50
Imaging Colors ...................................................................................................... 50
Flasher X-Press™ Menu (Circular Flasher View only) 51
Sensitivity .............................................................................................................. 52
Upper Range
(Advanced: Sonar, Split Sonar, Circular Flasher, and Big Digits Views only) ................ 52
Lower Range .......................................................................................................... 53
Color Palette (Circular Flasher, Ice Fishing Mode only) ................................................ 53
Zoom Level (Circular Flasher View, Ice Fishing Mode only) .......................................... 54
Alarms Menu ab 55
Depth Alarm .......................................................................................................... 56
Fish ID Alarm.......................................................................................................... 56
Low Battery Alarm ................................................................................................ 56
Temp. Alarm .......................................................................................................... 57
Alarm Tone ............................................................................................................ 57
Sonar Menu ab 58
Beam Select .......................................................................................................... 59
Imaging Frequency (Down Imaging™ Views only [345c DI]) ...................................... 60
Table of Contents
iii

Surface Clutter ...................................................................................................... 61
SwitchFire™ .......................................................................................................... 61
Fish ID+™ .............................................................................................................. 62
Fish ID Sensitivity .................................................................................................. 63
Real Time Sonar (RTS™) Window ........................................................................ 63
Sonar Colors (Sonar View, Sonar Zoom View, and Big Digits View) .............................. 64
Bottom View .......................................................................................................... 64
Zoom Width .......................................................................................................... 65
83 kHz Sensitivity (Advanced, DualBeam P US™ Sonar only [345c]) .......................... 65
455 kHz Sensitivity (Advanced, Down Imaging™ only [345c DI]) ................................ 65
Depth Lines (Advanced) .......................................................................................... 66
Noise Filter (Advanced) ............................................................................................ 66
Max Depth (Advanced) ............................................................................................ 67
Water Type (Advanced) ............................................................................................ 67
Ice Fishing Mode (Advanced) .................................................................................. 67
Imaging Colors (Down Imaging™ Views only [345c DI]).............................................. 68
Setup Menu ab 69
Units - Depth.......................................................................................................... 70
Units - Temp (International only) .............................................................................. 70
Units - Distance (with Temp/Speed only) .................................................................. 70
Units - Speed (with Temp/Speed only) ...................................................................... 70
User Mode ............................................................................................................ 71
Language (International only).................................................................................... 71
Triplog Reset (with Temp/Speed only) ...................................................................... 71
Restore Defaults .................................................................................................... 71
Select Views (Advanced).......................................................................................... 72
Table of Contents
iv

v
Select Readouts (Advanced, Sonar View and Down Imaging™ View only)...................... 72
Depth Offset (Advanced)............................................................................................ 73
Temp. Offset (Advanced) ............................................................................................ 73
Digits Format (Advanced) ............................................................................................74
Speed Calibration (Advanced, with Temp/Speed only).................................................. 74
Demonstration.......................................................................................................... 74
Sound Control .......................................................................................................... 74
roubleshooting 75
Fishfinder Doesn’t Power Up .................................................................................. 75
Fishfinder Defaults to Simulator with a Transducer Attached .............................. 75
Display Problems...................................................................................................... 76
Finding the Cause of Noise .................................................................................... 77
300 Series™ Fishfinder Accessories 78
Specifications 79
Glossary 81
Contact Humminbird® 85
Table of Contents

vi
OTE: 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 humminbird.com or contact our Customer Resource Center at
[phone].
OTE: 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
humminbird.com to order these accessories online or contact our Customer
Resource Center at 1-800-633-1468.
OTE: 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
Power On
Power On
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).
OTE: 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

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

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 3

4
DualBeam PLUS™ Sonar
(DualBeam PLUS™ models only [345c])
Your 345c Fishfinder uses a 200/83 kHz
DualBeam PLUS™ sonar system with a wide
(60°) area of coverage. DualBeam PLUS™ sonar
has a narrowly focused 20° center beam,
surrounded by a second beam of 60°, expanding
your coverage to an area equal to your depth. In
20 feet of water, the wider beam covers an area
20 feet wide.
DualBeam PLUS™ sonar returns can be blended
together, viewed separately, or compared side-
by-side. DualBeam PLUS™ is ideal for a wide
range of conditions - from shallow to very deep
water in both fresh and salt water. Depth
capability is affected by such factors as boat
speed, wave action, bottom hardness, water
conditions, and transducer installation.
How Sonar Works

Down Imaging™ Sonar
(Down Imaging™ models only [345c DI])
Your 345c DI Fishfinder uses Down
Imaging™ technology. The Down Imaging™
transducer scans the water with razor-thin,
high-definition beams. The beams are wide
(side to side) but very thin front to bac .
The Down Imaging™ beams can be operated
at two frequencies: 455 Hz (75°) or 800 Hz
(45°). Select 455 Hz for the best overall
image quality and depth. Select 800 Hz for
the sharpest image. See Sona Menu Tab:
Imaging F equency for more information.
The transducer also uses conical beams to
provide data in traditional 2D format (see
What’s on the Sona Display). Select 455
Hz for a narrowly focused 16° center beam,
or select 200 Hz for a wider 25° beam (see
Sona Menu Tab: Beam Select).
Depth capability is affected by such factors
as boat speed, wave action, bottom hardness,
water conditions, and transducer installation.
75 Degree Total Coverage
16°
75°
25°
455kHz
200kHz
455kHz
45° 800kHz
How Sonar Works 5

6
Dual Beam Ice Transducer
(optional-purchase XI 9 20 Ice Transducer only)
Your Fishfinder supports the optional-
purchase XI 9 20 Ice Transducer which
provides selectable dual-frequency sonar
with a wide area of coverage. Selectable
dual-frequency gives you the option of two
beams, and both beams will cover the
bottom and provide high definition. The 20
degree center beam provides the highest
definition, while the 60 degree beam
provides wider coverage. Depth capability
is affected by such factors as bottom
hardness and water conditions. Whether
fishing in shallow to very deep water,
selectable dual-frequency is ideal for a
variety of conditions.
Ice transducer
How Sonar Works

What’s on the Sonar Disp ay
What’s on the Sonar Display
The 300 Series™ Fishfinder can display a variety of useful information about
OTE: Entries in this view that list (with Temp/Speed) are available if the device is connected to
Depth - Water depth; an be set to alarm when
the water be omes too shallow.
Temperature - Water surfa e temperature.
Timer - Elapsed time with Temp/Speed
A essory.
Distance - Distan e traveled with Temp/Speed
A essory.
Average Speed - Average speed reading with
Temp/Speed A essory.
Cursor Dialog Box - Indi ates ursor depth on
the display and the depth of the bottom dire tly
below the ursor.
Speed - If a Temp/Speed a essory is atta hed,
the Fishfinder an display the speed of the boat
and an keep a Triplog of nauti al or statute
miles traveled.
Second Sonar Return - When the sonar signal
boun es between the bottom and the surfa e of the
water and ba k again. Use the appearan e of the
se ond return to determine bottom hardness. Hard
bottoms will show a strong se ond return, while soft
bottoms will show a very weak one or none at all.
7

8What’s on the Sonar Disp ay
RTS (Real Time Sonar) Window™
Structure - Where fish may be hiding.
Thermoclines - Layers of water with different
temperatures that appear at different depths
and different times of the year. A thermo line
typi ally appears as a ontinuous band of
many olors moving a ross the display at the
same depth.
Cursor - Available in Freeze Frame and an
be positioned in the Sonar View to provide
depth of a sonar return and bottom depth below
the ursor.
Low Sonar Intensity Return
High Sonar Intensity Return
Bait Ball
the area under your boat, including the following items:
the 300 Series™ Fishfinder.
Fish - The Fishfinder displays fish as ar hes
and/or fish i ons, and an be set to alarm
when a fish of a ertain size is dete ted.
When a target is dete ted, a Fish ID+™
symbol appears on the display with the
depth displayed above it. The size of the
symbol indi ates the intensity of the sonar
return. The unit will learly show s hools of
Bait Fish as " louds" of different shapes and
sizes, depending on the number of fish and
boat speed.

Understanding the Sonar Display
It is important to understand the significance of
the display. The display does not show a literal
3-dimensional representation of what is under the
water. Each vertical band of data received by the
control head and plotted on the display represents
something that was detected by a sonar return at
a particular time. As both the boat and the targets
(fish) may be moving, the returns are only showing
a particular segment of time when objects were
detected, not exactly where those objects are in
relation to other objects shown on the display.
The returned sonar echoes are displayed on the screen. As a new echo is
received, the historical data scrolls left across the view.
Real ime Sonar (R S™) Window
AReal Time Sonar (RTS™) Window appears on the right side of the display in
the Sonar View only. The RTS Window™updates at the fastest rate possible for
depth conditions and shows only the returns from the bottom, structure, and
fish that are within the transducer beam. The RTS Window™plots the depth
and intensity of a sonar return (see Sonar Menu Tab: RTS Window™).
The Narrow RTS Window™
indicates the sonar intensity
through the use of colors. Red
indicates a strong return and
blue indicates a weak return.
The depth of the sonar return
is indicated by the vertical
placement of the return on the
display depth scale.
The Wide RTS Window™
indicates the sonar intensity
through the use of a bar
graph. The length of the
plotted return indicates
whether the return is weak or
strong. The depth of the sonar
return is indicated by the
vertical placement of the
return on the display depth
scale. The Wide RTS
Window™does not use
grayscale.
What’s on the Sonar Disp ay 9

10
SwitchFire™
SwitchFire™ controls how the sonar returns are displayed in the Sonar Views.
SwitchFire™ settings are available in the Sonar Menu Tab.
To see the maximum sonar information available within the transducer beam so
more fish arches and better jig tracking are shown, choose Max Mode.
To see less clutter and more fish size accuracy interpreted from the transducer
beam, choose Clear Mode. See Sonar Menu Tab: SwitchFire™ for more
information.
Freeze Frame and Active Cursor
Freeze Frame & Active Cursor - Press any arrow on the 4-WAY Cursor Control key,
and the screen will freeze and a cursor will be displayed. Use the 4-WAY Cursor
Control key to move the cursor over a sonar return, and the depth of the sonar
return will be displayed at the bottom of the screen in the cursor dialog box.
The RTS Window™continues to update in Freeze Frame. To return to a scrolling
display and exit Freeze Frame, press the EXIT key. Freeze Frame is available in the
Sonar, Split Sonar, and Sonar Zoom Views.
Instant Image Update
Instant Image Update - You can change a variety of sonar menu settings (such
as Sensitivity or Upper Range), and the adjustments will be shown instantly on
the screen.
What’s on the Sonar Disp ay

Bottom Presentation
As the boat moves, the unit charts the changes in depth on the display to create
a profile of the Bottom Contour. The type of bottom can be determined from
the return charted on the display. A Hard Bottom such as compacted sediment
or flat rock appears as a thinner line across the display. A Soft Bottom such as
mud or sand appears as a thicker line across the display. Rocky Bottoms have
a broken, random appearance.
The sonar returns from the bottom, structure, and fish can be represented as
WhiteLine™ or Structure ID®.See Sonar Menu Tab: Bottom View to set the
bottom view.
Bottom Contour Profile with RT Window™
Rocky Bottom
Hard Bottom
Soft Bottom
What’s on the Sonar Disp ay 11