Humminbird 788ci HD DI User manual

531833-1EN_A
Operations Manual
788ci HD & 788ci HD DI Combo

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 the full benefit from
all the features and applications of your Humminbird® product.
Contact our Customer Resource Center at 1-800-633-1468 or visit our Web
site at humminbird.com.
WARNING! 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.
WARNING! 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.
WARNING! This product contains chemicals known to the State of California to cause
cancer and/or reproductive harm.
WARNING! Do not travel at high speed with the unit cover installed. Remove the unit cover
before traveling at speeds above 20 mph.
WARNING! Do not travel at high speed with the unit cover installed. Remove the unit cover
before traveling at speeds above 20 mph.
NOTE: The illustrations in this manual may not look exactly like the display on your
Humminbird®model, but your model will work in the same way.
ENVIRONMENTAL COM LIANCE 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.
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 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.
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 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.
ProMap™ and LakeMaster® are trademarked by or registered trademarks of Waypoint
Technologies, Inc.
Navionics® Gold, HotMaps™, and HotMaps Premium™ are registered trademarks of Navionics®.
700 Series™, Cannon®, CannonLink™, own Imaging™, ualBeam PLUS™, Fish I +™, Fishing
GPS®, Humminbird®, HumminbirdPC™, InterLink™, QuadraBeam PLUS™, RTS™, RTS
Window™, Structure I ®, Selective Fish I +®, WeatherSense®, WhiteLine™, WideSide®,
UniMap™, and X-Press™ Menu are trademarked by or registered trademarks of Humminbird®.
© 2010 Humminbird®, Eufaula AL, USA. All rights reserved.
ATTENTION INTERNATIONAL CU TOMER : Pro ucts sol in the U.S. are not
inten e for use in the international market. Humminbir ® international units provi e
international features an are esigne to meet country an regional regulations.
Languages, maps, time zones, units of measurement, an warranty are examples of
features that are customize for Humminbir ® international units purchase through
our authorize international istributors.
To obtain a list of authorize international istributors, please visit our Web site at
humminbird.com or contact our Customer Resource Center at [phone].

Power On the Unit 1
How Sonar Works 2
ualBeam PLUS™ Sonar (DualBeam PLUS™models only [788ci HD]) .......................... 4
own Imaging™ Sonar
(Down Imaging™ models only [788ci HD DI, XNT 9-DI-T Transducer])..................................5
ual Beam Ice Transducer (optional-purchase XI 9 20 Ice Transducer only) .................... 6
QuadraBeam PLUS™ Sonar (with optional-purchase QuadraBeam PLUS™ transducer) .... 7
WideSide® Sonar (with optional-purchase WideSide® transducer) .................................. 8
Universal Sonar 2 (compatible w/ optional-purchase Minnkota trolling motors) ................ 8
How GPS Works 9
What’s on the Sonar Display 10
Understanding the Sonar isplay .......................................................................... 12
Real Time Sonar (RTS™) Window .......................................................................... 12
SwitchFire™ ..............................................................................................................13
Freeze Frame and Active Cursor.............................................................................. 13
Instant Image Update ..............................................................................................13
Bottom Presentation ................................................................................................ 14
What’s on the Down Imaging™ Display
(Down Imaging™ models only [788ci HD DI]) 16
Understanding the own Imaging™ isplay..........................................................18
Interpreting the isplay ............................................................................................18
own Imaging™ Sensitivity ....................................................................................19
Freeze Frame and Active Cursor ..............................................................................19
Views 20
Sonar View .............................................................................................................. 22
Sonar Zoom View .................................................................................................... 23
Split Sonar View ...................................................................................................... 24
Big igits View ........................................................................................................ 25
own Imaging™ View (Down Imaging™models only [788ci HD DI]) ............................26
Circular Flasher View .............................................................................................. 28
Snapshot and Recording View ................................................................................ 33
Side Beam View (with optional-purchase QuadraBeam PLUS™ transducer).................... 40
WideSide® View (with optional-purchase WideSide® transducer) .................................. 44
Table of Contents
i

ii
Bird’s Eye View ...................................................................................................... 45
Chart View.............................................................................................................. 46
Chart/Sonar Combo View...................................................................................... 48
Chart/ own Imaging™ Combo View (Down Imaging™models only [788ci HD DI]) .... 49
own Imaging™/Sonar Combo View (Down Imaging™models only [788ci HD DI]).... 50
View Orientation .................................................................................................... 51
Viewing Cartography ............................................................................................ 51
Introduction to Navigation 54
Waypoints, Routes, and Tracks ............................................................................ 54
Save, Edit, or elete a Waypoint .......................................................................... 56
Navigate to a Waypoint or Position...................................................................... 58
Add a Waypoint Target or Trolling Grid ................................................................ 59
Save, Edit, or elete a Route ................................................................................ 60
Save or Clear a Current Track................................................................................ 61
Edit, elete, or Hide Saved Tracks........................................................................ 61
What’s on the Control Head 64
Key Functions 65
POWER/LIGHT Key .............................................................................................. 65
VIEW Key .............................................................................................................. 65
ZOOM (+/-) Key...................................................................................................... 66
4-WAY Cursor Control Key .................................................................................. 66
INFO Key ................................................................................................................ 67
MENU Key ............................................................................................................ 68
MARK Key.............................................................................................................. 68
GOTO Key................................................................................................................ 69
VIEW PRESET Keys................................................................................................ 69
EXIT Key ................................................................................................................ 69
SD Memory Card Slots 70
Add Maps to Your Fishing System........................................................................ 71
Export Navigation ata.......................................................................................... 72
Update Software.................................................................................................... 73
Accessory Bus 74
Table of Contents

iii
he Menu System 75
Start-Up Options Menu 76
Normal...................................................................................................................... 76
Simulator ................................................................................................................ 77
System Status ........................................................................................................ 77
Self Test .................................................................................................................... 78
Accessory Test.......................................................................................................... 78
GPS iagnostic View .............................................................................................. 79
PC Connect and Software Updates (with optional-purchase PC Connect cable only) .... 80
X-Press™ Menu 81
Main Menu 82
Quick Tips for the Main Menu................................................................................ 83
Note for all Menu Settings...................................................................................... 84
User Mode (Normal or Advanced).......................................................................... 85
Sonar X-Press™ Menu (Sonar Views only) 87
Side (WideSide® transducer: WideSide® View only) ........................................................ 88
Sensitivity ................................................................................................................ 88
Upper Range (Advanced: Sonar, Split Sonar, Circular Flasher, and Big Digits Views only).... 89
Lower Range .......................................................................................................... 90
Side Beam Range (WideSide® transducer: WideSide® View only) .................................. 90
Chart Speed ............................................................................................................ 91
Quad Layout (with Optional-Purchase QuadraBeam PLUS™ Transducer,
Side Beam View only) ................................................................................................ 91
Bottom Lock (Sonar Zoom View only) .......................................................................... 92
Bottom Range (Sonar Zoom View only when Bottom Lock is On) .................................. 92
Cancel Navigation (only when Navigating) ................................................................ 92
Down Imaging™ X-Press™ Menu (Down Imaging™ Views only [788ci HD DI]) 93
Imaging Sensitivity .................................................................................................. 94
Upper Range (Advanced) .......................................................................................... 94
Lower Range ............................................................................................................ 95
Chart Speed.............................................................................................................. 95
Imaging Colors ........................................................................................................ 96
Cancel Navigation (only when Navigating) ................................................................ 96
Table of Contents

iv
Flasher X-Press™ Menu (Circular Flasher View only) 97
Sensitivity .............................................................................................................. 98
Upper Range (Advanced: Sonar, Split Sonar, Circular Flasher,
and Big Digits Views only) ........................................................................................ 98
Lower Range ........................................................................................................ 99
Color Palette (Circular Flasher View, Ice Fishing Mode only) ...................................... 100
Cancel Navigation (only when Navigating) ............................................................ 100
Snapshot and Recording X-Press™ Menu
(Snapshot and Recording View only) 101
Start Recording (optional-purchase SD Memory Card,
Snapshot and Recording View only) ........................................................................ 102
Stop Recording (optional-purchase SD Memory Card only) ...................................... 102
elete Image (optional-purchase SD Memory Card,
Snapshot and Recording View only) ........................................................................ 102
elete All Images (optional-purchase SD Memory Card,
Snapshot and Recording View only) ..........................................................................102
elete Recording (optional-purchase SD Memory Card,
Snapshot and Recording View only) ........................................................................ 103
elete All Recordings (optional-purchase SD Memory Card,
Snapshot and Recording View only) ........................................................................ 103
Pings Per Second (optional-purchase SD Memory Card,
Snapshot and Recording View only) ........................................................................ 103
Playback Speed (optional-purchase SD Memory Card,
Snapshot and Recording View only) ........................................................................ 104
Stop Playback (optional-purchase SD Memory Card only) ........................................ 105
Navigation X-Press™ Menu (Navigation views only) 106
Waypoint [Name] (Only with an active cursor on a waypoint) .................................. 107
Cursor To Waypoint (Chart or Combo View only) .................................................... 107
Save Current Track .............................................................................................. 108
Clear Current Track .............................................................................................. 108
Save Current Route (only when Navigating) .......................................................... 108
Skip Next Waypoint (only when Navigating) .......................................................... 108
Cancel Navigation (only when Navigating) ............................................................ 109
Table of Contents

v
Remove Target (only if a Target is Active) .................................................................. 109
Remove Grid (only if a Grid is Active) ........................................................................ 109
Sonar Window (Combo View only) .......................................................................... 109
Waypoint [Name] (Most recently-created waypoint) .................................................. 110
Alarm Menu Tab 111
Depth Alarm .......................................................................................................... 112
Fish D Alarm.......................................................................................................... 112
Low Battery Alarm ................................................................................................ 112
Temp. Alarm .......................................................................................................... 113
Off Course Alarm ....................................................................................................113
Arrival Alarm .......................................................................................................... 114
Drift Alarm.............................................................................................................. 114
Alarm Tone ............................................................................................................ 114
Sonar Menu Tab 115
Beam Select .......................................................................................................... 116
maging Frequency (Down Imaging™ Views only [788ci HD DI])..................................118
Surface Clutter ...................................................................................................... 119
SwitchFire™ .......................................................................................................... 120
Fish D+™ .............................................................................................................. 121
Fish D Sensitivity .................................................................................................. 122
Real Time Sonar (RTS™) Window ........................................................................ 122
Sonar Colors (Sonar View, Sonar Zoom View,
Circular Flasher View, and Big Digits View) ................................................................ 123
Bottom View .......................................................................................................... 123
Zoom Width .......................................................................................................... 124
83 kHz Sensitivity (Advanced, DualBeam PL S™ Sonar only) .................................... 124
455 kHz Sensitivity (Advanced, Down Imaging™ Views only [788ci HD DI]) ..................124
455 kHz Sensitivity (Advanced, with optional purchase QuadraBeam PL S™ transducer)..124
WideSide® Sensitivity (Advanced: with WideSide® transducer) .................................. 125
Depth Lines (Advanced) .......................................................................................... 126
Noise Filter (Advanced)............................................................................................ 126
Max Depth (Advanced) ............................................................................................ 127
Water Type (Advanced) ............................................................................................ 127
Table of Contents

vi
Trans ucer Select ................................................................................................ 128
Ice Fishing Mo e ................................................................................................ 128
Imaging Colors (Down Imaging™ View only [788ci HD DI]) ......................................128
Navigation Menu Tab 129
Current Track........................................................................................................ 130
Save Tracks ........................................................................................................ 130
Waypoints ............................................................................................................ 131
Routes .................................................................................................................. 132
Chart Orientation ................................................................................................ 132
North Reference .................................................................................................. 133
Waypoint Decluttering (Advanced) ...................................................................... 133
Trolling Gri Rotation .......................................................................................... 133
Trackpoint Interval .............................................................................................. 133
Track Min Distance (Advanced) ............................................................................ 134
Map Datum (Advanced) ........................................................................................ 134
Course Projection Line ........................................................................................ 134
Export All Nav Data (optional-purcha e SD Memory Card required) .......................... 134
Delete All Nav Data (Advanced) ............................................................................ 135
Continuous Navigation Mo e ............................................................................ 135
GPS Receiver Overri e (Advanced).......................................................................... 135
Chart Menu Tab 136
Lat/Lon Gri .......................................................................................................... 137
Navai s on Bir ’s Eye View ................................................................................ 137
Chart Select.......................................................................................................... 137
Set Simulation Position (Advanced) ...................................................................... 137
Set Map Offset (Advanced) .................................................................................. 138
Clear Map Offset (Advanced) .............................................................................. 138
Sha e Depth ...................................................................................................... 138
Chart Detail Level ................................................................................................ 139
Map Bor ers ........................................................................................................ 139
Spot Soun ings.................................................................................................... 140
Contour Lines (optional-purcha e LakeMa ter® chart only) ...................................... 140
Table of Contents

vii
epth Colors (optional-purchase LakeMaster® charts only).......................................... 140
epth Highlight (optional-purchase LakeMaster® charts only) .................................... 140
epth Highlight Range (+/-) (optional-purchase LakeMaster® charts only) ................ 141
Water Level Offset (optional-purchase LakeMaster® charts only) ................................ 141
Shallow Water Highlight (optional-purchase LakeMaster® charts only) ...................... 141
Lake List (optional-purchase LakeMaster® charts only) ................................................ 142
Setup Menu ab 143
Units - epth.......................................................................................................... 144
Units - Temp (International only) .............................................................................. 144
Units - istance .................................................................................................... 144
Units - Speed ........................................................................................................ 144
User Mode ............................................................................................................ 145
Language (International Models only) ........................................................................ 145
Triplog Reset ........................................................................................................ 145
Restore efaults .................................................................................................... 145
Select Readouts (Advanced, Sonar View only) .......................................................... 146
epth Offset (Advanced).......................................................................................... 147
Temp. Offset (Advanced, with Temp/Speed only)........................................................ 148
Speed Calibration (Advanced, with Temp/Speed only) .............................................. 148
Local Time Zone (Advanced).................................................................................... 148
aylight Saving Time (Advanced)............................................................................ 148
Position Format (Advanced) .................................................................................... 149
Time Format (Advanced, International only) .............................................................. 149
ate Format (Advanced, International only)................................................................ 149
NMEA Output (Advanced) ...................................................................................... 150
Sonar ...................................................................................................................... 151
emonstration........................................................................................................ 151
Sound Control ........................................................................................................ 151
Views Menu ab 152
Table of Contents

viii
Acce orie Menu Tab 153
Screen Snapshot .................................................................................................... 154
Trouble hooting 155
Fishing System Doesn’t Power Up........................................................................ 155
Fishing System Defaults to Simulator with a Transducer Attached .................. 155
Display Problems.................................................................................................... 156
Finding the Cause of Noise .................................................................................. 157
700 Serie ™ Fi hing Sy tem Acce orie 158
Specification 160
Glo ary 161
Contact Humminbird® 169
NOTE: Entries in this Table of Contents which list (International Only) are only
available on products sold outside of the .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].
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 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

Po er On
Follow the instructions below to power on your Humminbird® control head.
1. Press the POWER/L GHT 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 St rt-Up Options Menu for more information.
•f a functioning transducer is connected, Normal operation will be
selected automatically at power up, and your Fishing System can
be used on the water.
•f 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.
• n Simulator you can learn how to use your control head and save
settings in advance for later use.
788ci Title Screen
1Power On

2
How Sonar Works
Sonar technology is based on sound waves. The 700 Series™ Fishing System
uses sonar to locate and define structure, bottom contour and composition, as
well as depth directly below the transducer.
Your 700 Series™ Fishing System 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 utilizes 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 LC screen.
Each time a new echo is received, the old
echoes are moved across the LC , creating
a scrolling effect.
How Sonar Works

3How 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.

4
DualBeam PLUS™ Sonar
(DualBeam LUS™models only [788ci HD])
Your 788ci HD ishing System uses a
200/83 kHz ualBeam PLUS™ sonar system with
a wide (60°) area of coverage. ualBeam 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.
ualBeam PLUS™ sonar returns can be blended
together, viewed separately, or compared side-
by-side. ualBeam PLUS™ is ideal for a wide
range of conditions - from shallow to very deep
water in both fresh and salt water. epth
capability is affected by such factors as boat
speed, wave action, bottom hardness, water
conditions and transducer installation.
How Sonar Works

5How Sonar Works
Down Imaging™ Sonar
(Down Imaging™models only
[788ci HD DI, XNT 9-DI-T Transducer])
Your 788ci HD DI ishing System uses
own Imaging™ technology. The own
Imaging™ transducer scans the water with
razor-thin, high-definition beams. The
beams are wide (side to side) but very thin
front to back.
The own Imaging™ beams can be
operated at two frequencies: 455 kHz (75°)
or 800 kHz (45°). Select 455 kHz for the
best overall image quality and depth.
Select 800 kHz for the sharpest image. See
Down Imaging™X- ress™Menu:
Imaging Frequency for more information.
The transducer also uses conical beams to
provide data in traditional 2 format (see
What’s on the Sonar View). Select 455 kHz for
a narrowly focused 16° center beam, or select
200 kHz for a wider 25° beam (see Sonar
Menu Tab: Beam Select).
epth 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

6
Dual Beam Ice Transducer
(optional-purchase XI 9 20 Ice Transducer only)
Your Fishing System 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° center beam provides the highest
definition, while the 60° beam provides
wider coverage. epth capability is
affected by such factors as bottom
hardness and water conditions. Whether
fishing in shallow or very deep water,
selectable dual-frequency is ideal for a
variety of conditions.
Ice transducer
How Sonar Works

7
QuadraBeam PLUS™ Sonar
(with optional-purchase
QuadraBeam LUS™ transducer)
Your Fishing System also supports
QuadraBeam PLUS™ sonar with the
purchase of an additional QuadraBeam
PLUS™ transducer. QuadraBeam PLUS™
sonar provides an extremely wide 90° area
of coverage. QuadraBeam PLUS™ starts
with two fan-shaped 35° 455 kHz Side
Structure locating sonar beams to spot fish,
bait, and structure to the left and right of
the boat over an area of the bottom that’s
always equal to twice your depth. For a
detailed view below the boat, QuadraBeam
PLUS™ uses ualBeam PLUS™ technology,
with precision 20° and wide 60° beams.
QuadraBeam PLUS™ finds more fish faster
and can even tell you where to put your bait
by showing if fish are to the left, right, or
directly beneath your boat.
90° Total Coverage
Bottom Coverage = 2 x Depth
35° 60° 20° 35°
455 kHz 455 kHz
83 kHz
200 kHz
How Sonar Works

8
WideSide® Sonar
(with optional-purchase WideSide®
transducer)
Your Fishing System also supports
WideSide® sonar with the purchase of an
additional WideSide® transducer. The
WideSide® transducer is a specialized
"side-looking" transducer that is extremely
useful for bank fishing or looking for bait
fish in open water. The WideSide®
transducer uses three different sonar
elements that transmit signals to the left,
right, and straight down from your boat.
The downward beam is 200 kHz with a 24°
area of coverage. This beam maintains a
continuous digital depth readout from the
bottom directly beneath your boat. The side
beams are 455 kHz with a 16° area of
coverage. The side-looking elements can
be used independently or together to
locate targets near the surface of the water
on either side of your boat.
Universal Sonar 2
(compatible w/ optional-purchase Minnkota trolling motors)
Your 700 Series™ Fishing System supports Universal Sonar 2, a state-of-the-
art, integrated and protected transducer that is built into the lower unit of
Minnkota trolling motors. With Universal Sonar 2, all wiring is concealed inside
the indestructible composite shaft—out of sight and out of harm’s way, with
no clamps, ties, or exposed wires. Universal Sonar 2 features new temperature
sensing and the performance of ualBeam PLUS™ technology (available with
all Humminbird® ualBeam PLUS™ models). An expanded view and greater
bottom detail gives you a totally new perspective of the water below, along
with optimal sonar performance to help you find fish.
How Sonar Works