Humminbird Fish Finder 531444 1_A User Manual

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323 Operations Manual  
531444-1_A  
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Table of Contents  
Table of Contents  
Bottom View .......................................................................................................................................... 28  
Zoom Level (Sonar Zoom view only).................................................................................................... 29  
Bottom Lock (Sonar Zoom view only).................................................................................................. 29  
Bottom Range (Sonar Zoom View only, when Bottom Lock is On) ................................................ 30  
Depth Offset (Advanced)...................................................................................................................... 50  
Temp Offset (Advanced) ...................................................................................................................... 50  
Speed Calibration (Advanced, with Temp/Speed only) .................................................................... 51  
Troubleshooting  
52  
Sonar Menu Tab  
31  
300 Series™ Doesn’t Power Up.......................................................................................................... 52  
300 Series™ Defaults to Simulator with a Transducer Attached ............................................ 52  
Display Problems .................................................................................................................................. 53  
Finding the Cause of Noise ................................................................................................................ 53  
Beam Select ............................................................................................................................................ 32  
Fish ID+™.................................................................................................................................................. 33  
Fish ID Sensitivity .................................................................................................................................. 34  
Real Time Sonar (RTS®) Window ...................................................................................................... 34  
Zoom Width............................................................................................................................................ 35  
83 kHz Sensitivity (Advanced).............................................................................................................. 35  
Depth Lines (Advanced) ........................................................................................................................ 36  
Surface Clutter (Advanced) .................................................................................................................. 37  
Noise Filter (Advanced) ........................................................................................................................ 38  
Max Depth (Advanced) ........................................................................................................................ 38  
Water Type (Advanced) ........................................................................................................................ 39  
Specifications  
Glossary  
55  
56  
56  
Contact Humminbird®  
NOTE: Entries in this Table of Contents which list (International only) are only available on products sold outside of the  
US by our authorized International Distributors. To obtain a list of authorized International Distributors, please visit  
our website at www.humminbird.com or contact our Customer Resource Center at 1-800-633-1468 to locate the  
distributor nearest you.  
Alarms Menu Tab  
40  
Depth Alarm............................................................................................................................................ 41  
Fish ID Alarm .......................................................................................................................................... 41  
Low Battery Alarm ................................................................................................................................ 42  
Temp Alarm ............................................................................................................................................ 42  
Alarm Tone .............................................................................................................................................. 43  
NOTE: Entries in this Table of Contents which list (with Temp/Speed) require the purchase of a separate accessory. You  
can visit our website at www.humminbird.com to order this accessory online or contact our Customer Resource  
Center at 1-800-633-1468.  
Setup Menu Tab  
44  
Units - Depth .......................................................................................................................................... 45  
Units - Temp (International only) ........................................................................................................ 45  
Units - Distance (with Temp/Speed) .................................................................................................. 45  
Units - Speed (with Temp/Speed)........................................................................................................ 46  
User Mode .............................................................................................................................................. 46  
Language (International only).............................................................................................................. 46  
Triplog Reset (with Temp/Speed) ........................................................................................................ 47  
Restore Defaults .................................................................................................................................... 47  
Select Views (Advanced) ...................................................................................................................... 48  
Select Readouts (Advanced, Sonar view only) .................................................................................. 49  
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When all the echoes are viewed side by  
side, an easy to interpret "graph" of the  
bottom, fish and structure appears.  
How Sonar Works  
Sonar technology is based on sound waves. The 300 Series™ Fishing System uses  
sonar to locate and define structure, bottom contour and composition, as well as  
depth directly below the transducer.  
Your 300 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 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  
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.  
a
good balance between depth  
performance and resolution. Low  
frequencies (83 kHz) are typically used to  
achieve greater depth capability.  
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The power output is the amount of  
energy generated by the sonar  
transmitter. It is commonly measured  
using two methods:  
DualBeam PLUS™ Sonar  
Your 300 Series™ Fishing System 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. The 20° center beam is  
focused on the bottom, to show you  
structure, weeds and cover. The 60° wide  
beam is hunting for fish in the wide coverage  
area. 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.  
• 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.  
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What’s On the Display  
The 300 Series™ Fishing System can display a variety of useful information about the a
Depth - water depth; can be set to alarm  
when the water becomes too shallow.  
Cursor - available in Freeze Frame and can  
depth of a sonar return and bottom depth  
Speed - if a Temp/Speed accessory is attached,  
the 300 Series™ can display the speed of the  
boat, and can keep a Triplog of nautical or  
statute miles traveled.  
Do Not print this page  
Temperature - water surface temperature.  
Timer - elapsed time with Temp/Speed  
Accessory.  
Distance - distance traveled with Temp/Speed  
Accessory.  
Average Speed - average speed reading with  
Temp/Speed Accessory.  
Bait Ball  
Hard Bottom  
Rocky Bottom  
Second Sonar Return - when the sonar  
signal bounces between the bottom and the  
surface of the water and back again. Use the  
appearance of the second return  
to determine bottom hardness. Hard  
bottoms will show a strong second return,  
while soft bottoms will show a very weak  
one or none at all.  
Cursor Dialog Box - indicates cursor depth  
directly below the cursor.  
NOTE: Entries in this view that list (with Temp/Speed) are available if this device is  
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rea under and adjacent to your boat, including the following items:  
83 kHz, Wide Beam Hollow Fish Symbol  
be positioned in the Sonar View to provide  
below the cursor.  
Structure - where fish may be hiding.  
Fish - fish are displayed as arches and/or  
fish icons, and the unit can be set to alarm  
when a fish of a certain size is detected.  
When a target is detected and Fish ID+ is on,  
a Fish ID+TM symbol with depth is displayed.  
The size of the symbol shows the intensity of  
the sonar return. The unit will clearly show  
schools of Bait Fish as "clouds" of different  
shapes and sizes, depending on the number  
of fish and boat speed.  
Do Not print this page  
200 kHz, Narrow Beam Shaded Fish Symbol  
Thermoclines - layers of water with different  
temperatures that appear at different depths  
and different times of the year. A thermocline  
typically appears as a continuous band of  
many gray levels moving across the display at  
the same depth.  
Soft Bottom  
RTS® (Real Time Sonar) Window  
Battery Voltage - the voltage of the boat’s  
battery; can be set to alarm if the voltage  
falls below a certain point.  
on the display and the depth of the bottom  
connected to the 300 Series™ Fishing System.  
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Views  
Sonar View  
The views available on your 300 Series™ Fishing System are:  
Sonar View presents a historical log of sonar returns. Depth is always displayed.  
Readouts for temperature and speed are automatically displayed if the appropriate  
accessory is connected. The most recent sonar returns are charted on the right side  
of the window; as new information is received, the older information is moved  
across the display to the left. A Digital Depth Readout is displayed in the upper left  
corner. A scale with Upper and Lower Depth Range readouts appears along the right  
edge of the Sonar View. The scale indicates the distance from the surface of the  
water to a depth range sufficient to show the bottom. Depth Range is automatically  
selected to keep the bottom visible on the display, although you can adjust it  
manually as well (see Sonar X-PressTM Menu). Five additional Digital Readouts display  
information from optional-purchase accessories.  
• Sonar View  
• Zoom View  
• 200/83 kHz Split Sonar View  
• Big Digits View  
• Circular Flasher View.  
Sonar View is the default view. When the VIEW key is pressed, the display cycles  
through the available views. When the EXIT key is pressed, the display cycles  
through the available views in reverse order. Any view can be hidden or displayed as  
part of the view rotation using the Views Menu tab.  
These information boxes can be customized to show only the information desired  
(see Setup Menu Tab, Select Readouts).  
NOTE: When you change any menu settings that affect the sonar, the view will update  
immediately (i.e. you don’t have to exit the menu to apply the change to the screen). For  
instance, by switching between "Inverse" and "Structure ID®" from the X-PressTM Menu it is  
possible to quickly alternate between the two viewing methods.  
Sonar View  
Upper Depth  
Range  
Depth  
Temperature  
RTS® Window  
Triplog  
Cursor  
Sonar History  
Window  
Cursor Dialog Box  
Lower Depth  
Range  
NOTE: If the Depth number is flashing, it means that the unit is having trouble locating  
the bottom. This usually happens if the water is too deep, the transducer is out of the  
water, the boat is moving too fast, or for any other reason that the unit can’t accurately  
receive continuous data.  
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Understanding Sonar History  
Real Time Sonar (RTS®) Window  
It is important to understand the significance  
of the 300 Series™ Fishing System 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.  
A Real Time Sonar (RTS®) Window appears on the right side of the display in the  
Sonar View only. The RTS® Window always 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 - RTS® Window).  
The Narrow RTS® Window  
indicates the sonar intensity  
through the use of grayscale.  
The grayscale used matches  
the bottom view grayscale  
setting used in the sonar  
history window (i.e. Inverse,  
Structure ID®, WhiteLine®,  
Bottom Black). 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 provides an  
indication of 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  
make use of grayscale.  
Freeze Frame  
Freeze Frame - Pressing any arrow on the 4-WAY Cursor Control key will freeze the  
screen and a cursor will be displayed on the screen. The cursor can be positioned on  
the display using the 4-WAY Cursor Control key to determine the depth of any sonar  
return. The RTS® Window continues to update in Freeze Frame. In addition, see the  
effects of menu setting changes with Instant Image Update. Pressing EXIT will exit  
Freeze Frame and the display will start to scroll. Freeze Frame is available in Sonar,  
Sonar Zoom and 200/83 kHz Split Sonar Views.  
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Inverse is a method where weak returns are shown  
with dark pixels and strong returns with lighter pixels.  
This has the benefit of ensuring that weak signals will  
be clearly visible on the display.  
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.  
Bottom Contour Profile with RTS® Window.  
Temp/Speed Accessory is optional.  
Structure ID® represents weak returns as light pixels  
and strong returns as dark pixels. This has the benefit of  
ensuring that strong returns will be clearly visible on  
the display.  
Hard Bottom  
Soft Bottom  
Rocky Bottom  
WhiteLine® highlights the strongest sonar returns in  
white, resulting in a distinctive outline. This has the  
benefit of clearly defining the bottom on the display.  
The sonar returns from the bottom, structure and fish can be represented as either  
Inverse (default), WhiteLine®, Structure ID®, or Bottom Black. See Sonar X-PressTM  
Menu: Bottom View for details on how to set the bottom view.  
Bottom Black displays all pixels below the bottom  
contour as black, regardless of signal strength. This has  
the benefit of providing a high contrast between the  
bottom and other sonar returns on the display. Any  
targets such as fish, structure and thermoclines will be  
shown using the Structure ID® method.  
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Sonar Zoom View  
200/83 kHz Split Sonar View  
Sonar Zoom View increases the displayed resolution to separate sonar returns that  
are very close together, such as those caused by fish suspended close to the bottom  
or within structure. In Zoom View, the display is split to show a narrow slice of the  
full range view on the right and the zoomed view on the left. The full range view on  
the right also contains the Zoom Preview Box that shows what part of the full range  
view is shown in zoom view on the left; the Zoom Preview Box tracks the bottom in  
the full range view.  
Split Sonar View displays sonar returns from the 83 kHz wide beam on the left side  
of the screen and displays sonar returns from the 200 kHz narrow beam on the right  
side of the screen. Depth is always displayed in the upper left hand corner. You can  
use the Split Sonar View to make side by side comparisons between the sonar  
returns from the 83 kHz wide beam and the 200 kHz narrow beam.  
The digital readouts in the Split Sonar View cannot be customized; therefore,  
information such as water temperature and voltage are unavailable in the Split  
Sonar View.  
As the depth changes, the zoomed view updates automatically to display a  
magnified image of the bottom. The Zoom Preview Box shows where the zoomed  
view is in relation to the full range view. The Zoom Level, or magnification, is  
displayed in the lower left corner and can be changed to suit conditions (see Sonar  
X-PressTM Menu: Zoom Level). Upper and Lower Zoom Depth Range numbers indicate  
the depth of the water which is being viewed.  
200/83 kHz Split Sonar View  
Upper  
Depth Range  
Depth  
Digital depth is displayed in the upper left hand corner. The digital readouts in the  
Sonar Zoom View cannot be customized; therefore, information such as water  
temperature and voltage are unavailable in the Sonar Zoom View.  
Sonar Zoom View  
Upper Depth Range,  
Full Range View  
Depth  
Upper Depth Range,  
Zoom View  
83 kHz  
Sonar History  
Window  
Lower  
Depth Range  
Full Range View  
200 kHz  
Sonar History Window  
Zoom  
Preview Box  
Zoomed  
View  
Lower Depth Range,  
Full Range View  
Zoom Level  
Lower Depth  
Range, Zoom View  
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Big Digits View  
Key Functions  
Big Digits View provides digital data in a large, easy-to-see format. Depth is always  
displayed. Readouts for temperature, speed and Triplog information are displayed  
automatically if the appropriate accessory is connected to the system. The Triplog  
shows distance traveled, average speed, and time elapsed since the Triplog was last  
reset. The digital readouts in the Big Digits View cannot be customized.  
Your 300 Series™ Fishing System user interface consists of a set of easy-to-use keys  
that work with various on-screen views and menus to give you flexibility and control  
over your fishing experience.  
POWER/LIGHT Key  
The POWER/LIGHT key is used to turn the 300 Series™ Fishing System  
on and off, and also to adjust the backlight and contrast of the display.  
Press the POWER/LIGHT key to turn the unit on. The Title screen is then displayed  
until the Fishing System begins sonar operation.  
Big Digits View  
Timer shows the time  
elapsed since Triplog  
was last reset  
Depth  
Distance is the distance  
traveled since the  
Triplog was last reset  
Your Fishing System will start up with the backlight on and will  
automatically turn it off to conserve power. To turn the backlight  
on for night fishing, or to adjust the display contrast, press the  
Temperature  
Voltage - the battery  
voltage.  
POWER/LIGHT key to access the Light and Contrast menu. Use  
the 4-WAY Cursor key to select Light or Contrast and then use the LEFT or RIGHT Cursor  
key to change the settings. Press EXIT to exit the Light and Contrast menu.  
Average Speed shows  
the speed since the  
Triplog was last reset  
Speed  
Press and hold the POWER/LIGHT key for 3 seconds to turn the unit off. A message  
will appear telling you how many seconds there are until shutdown occurs. Your  
Fishing System should always be turned off using the POWER/LIGHT key. This will  
ensure that shutdown occurs properly and any menu settings will be saved.  
Circular Flasher View  
Circular Flasher View displays Real Time Sonar (RTS®) data in the traditional flasher  
format. Depth and temperature are always displayed. The digital readouts in the  
Flasher View cannot be customized.  
VIEW Key  
The VIEW key is used to cycle through all available views. Press the  
VIEW key to advance to the next view. Repeatedly pressing VIEW  
cycles through all views available. Views can be hidden to optimize  
the system to your fishing requirements (see Setup Menu Tab: Select  
Views, Advanced).  
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MENU Key  
EXIT Key  
The MENU key is used to access the menu system.  
The EXIT key has multiple functions, depending on the situation:  
Start-Up Options Menu - Press the MENU key during the power up sequence to view  
the Start-Up Options menu.  
• If an alarm is sounding, pressing EXIT will cancel the alarm.  
• If a menu tab is selected, pressing EXIT will exit the menu mode and return  
to the view.  
X-PressTM Menu - Press the MENU key once for the Sonar X-PressTM Menu. The X-PressTM  
Menu allows you to access frequently-used settings without having to navigate through  
the whole menu system. When the X-PressTM Menu is displayed, you can use the UP or  
DOWN Cursor keys to move to a particular menu choice. As soon as you alter a  
parameter (using the RIGHT or LEFT Cursor keys) the X-PressTM Menu will collapse  
temporarily, and the screen will update if it is affected by your menu setting change,  
allowing you to see the effects of your action immediately. Reactivate the X-PressTM  
Menu by using the UP or DOWN Cursor keys.  
• If a menu is active, pressing EXIT will return to the previous level in the menu  
system.  
• Pressing EXIT will cycle through the available views in reverse order.  
• If Freeze Frame is active, pressing EXIT will return to a scrolling display.  
Powering Up the Unit  
Turn on your 300 Series™ Fishing System by  
pressing the POWER/LIGHT key. The Title screen is  
displayed until the Fishing System begins  
operation. Your Fishing System will begin Normal  
or Simulator operation, depending on the presence  
or absence of a transducer.  
Main Menu - Press the MENU key twice for the tabbed Main Menu System. The Main  
Menu System is organized under tabbed headings to help you find a specific menu  
item quickly: Alarms, Sonar, and Setup tabs are part of your tabbed Main Menu System.  
Use the LEFT or RIGHT 4-WAY Cursor Control key to select a tab; then use the DOWN or  
UP key to select the menu item, and the LEFT or RIGHT key to alter a menu setting.  
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4-WAY Cursor Control Key  
The 4-Way Cursor Control Key has multiple functions, depending on the  
situation:  
323 Title Screen  
• Use the DOWN or UP arrow keys to select a menu choice from the menu list,  
then use the LEFT or RIGHT arrow keys to change a menu setting.  
NOTE: Menu choices are implemented and saved immediately - no further action is  
required.  
• In all Sonar views but the Big Digits view, pressing any 4-WAY Cursor Control  
key will activate Freeze Frame and will then allow you to position the cursor  
on the display.  
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User Mode (Normal or Advanced) - An Advanced Mode is provided for users who  
desire the highest level of control over the Fishing System and Normal Mode for  
users who desire greater simplicity and fewer menu choices. Additional Advanced  
menu choices will be displayed throughout the menu system when you navigate to  
specific menus while in Advanced Mode. Any changes made while in Advanced  
Mode will remain in effect after you switch back to Normal Mode. See Setup Menu  
Tab: User Mode for specific instructions on changing to Advanced User Mode.  
The Menu System  
The menu system is divided into easy-to-use menu modules. The main components  
of the menu system are:  
Start-Up Options Menu - Press the MENU key during the power up sequence to view  
the Start-Up Options menu.  
X-PressTM Menu - The X-PressTM Menu allows you to  
access the settings that are changed frequently  
without having to navigate through the whole menu  
system. Press the MENU key once to display the  
X-PressTM Menu. When you select a menu item from  
the X-PressTM Menu, the menu will collapse, leaving  
only the menu choice on the screen. Use the UP or  
DOWN Cursor keys to reactivate the X-PressTM Menu.  
NOTE: The X-PressTM Menu choices will vary depending on  
which view is active when you press the MENU key, as well  
Sonar Tab, Normal Mode  
X-PressTM Menu  
as whether you are in Normal or Advanced User Mode.  
Main Menu Tabs - Less frequently-adjusted menus are grouped into the Main  
Menu System. The Main Menu system is organized under the following tab headings  
to help you find a specific menu item quickly: Alarms, Sonar, and Setup.  
Sonar Tab, Advanced Mode  
Total Screen Update - when you change any menu settings that affect the Sonar  
View, the view will update immediately (i.e. you don’t have to exit the menu to apply  
the change to the screen). For instance, by switching between “Inverse” and  
"Structure ID®" from the X-PressTM Menu it is possible to alternate quickly between  
the two viewing methods.  
Press the MENU key twice for the Main Menu, then use the  
4-WAY Cursor LEFT or RIGHT key to select a tab, and use the  
DOWN or UP key to select a specific menu item under that  
tab, then use the LEFT or RIGHT keys again to change a  
menu setting. Press the EXIT key to move quickly to the top  
of the tab. A down arrow at the bottom of a menu means  
that you can scroll to additional menu choices using the  
DOWN Cursor key. A right or left arrow on a menu choice  
means that you can use the RIGHT or LEFT Cursor keys to  
make changes or to see more information.  
Main Menu System  
Normal User Mode  
NOTE: The Main Menu choices will vary depending on  
whether you are in Normal or Advanced User Mode.  
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Start-Up Options Menu  
Simulator  
Press the MENU key when the Title screen is displayed to access the Start-Up  
Options menu.  
Use the Simulator to learn how to use your 300 Series™ Fishing System before taking  
your boat on the water. The Simulator is a very powerful tool that simulates on the  
water operation, providing a randomly-updated display. We recommend going  
through this manual while using the Simulator, since all of the menus function and  
affect the display the way they actually do when in Normal operation.  
Use the UP or DOWN 4-WAY Cursor keys to position  
the cursor, then the RIGHT Cursor key to select one  
of the following choices. If you wait too long, the  
system will default to whichever menu mode  
happens to be highlighted:  
NOTE: To get the full benefit of the Simulator, it is important to select Simulator manually  
from the Start-Up Options menu as opposed to letting the Fishing System enter Simulator  
automatically (as it will if a transducer is not connected and you do nothing during power  
up). Manually selecting Simulator from the Start-Up Options menu allows you to pre-  
configure your 300 Series™ Fishing System for on the water operation. Any menu  
changes you make will be saved for later use.  
• Normal  
• Simulator  
• System Status.  
A message will appear on the display periodically  
to remind you that you are using the Simulator.  
Start-Up Options Menu  
See the following paragraphs for more information  
about each of these choices.  
Exit the Simulator by powering your Fishing  
System off.  
Normal Operation  
Use Normal operation for on the water operation with a transducer connected. In  
addition, your 300 Series™ Fishing System uses advanced transducer detection  
methods to determine if a transducer is connected. If a functioning transducer is  
connected, Normal operation will be selected automatically at power up and your  
Fishing System can be used on the water.  
Simulator  
Exit Normal operation by powering your Fishing System off.  
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System Status  
Use System Status to view system connections and  
to conduct a unit self-test.  
Sonar X-PressTM Menu  
The Sonar X-PressTM Menu provides access to the settings  
most frequently-used. Press the MENU key once while in  
any of the Sonar Views to access the Sonar X-PressTM  
Menu.  
The following screens are displayed in turn  
when you press the VIEW button when using  
System Status:  
NOTE: Upper Range only appears in Advanced User Mode  
when in Sonar, Split Sonar, Big Digits and Circular Flasher  
Views.  
• Self Test  
• Accessory Test.  
System Status Self Test Screen  
NOTE: Zoom Level only appears in Sonar Zoom View.  
Self Test displays results from the internal diagnostic self test, including unit serial  
number, Printed Circuit Board (PCB) serial number, software revision, total hours of  
operation and the input voltage.  
Sonar X-PressTM Menu  
Accessory Test lists the accessories connected to  
the system.  
NOTE: The speed accessory will be detected only if the  
paddlewheel has moved since your 300 Series™ Fishing  
System was powered up.  
System Status Accessory Test Screen  
Exit System Status by powering your Fishing System off.  
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Sensitivity  
Upper Range  
(Advanced: Sonar, Split Sonar, Big Digits and Circular Flasher Views only)  
Sensitivity controls how much detail is shown on  
the display and will adjust the sensitivity of all sonar frequencies. Increasing the  
sensitivity shows more sonar returns from small baitfish and suspended debris in  
the water; however, the display may become too cluttered. When operating in very  
clear water or greater depths, increased sensitivity shows weaker returns that may  
be of interest. Decreasing the sensitivity eliminates the clutter from the display that  
is sometimes present in murky or muddy water. If Sensitivity is adjusted too low, the  
display may not show many sonar returns that could be fish.  
Upper Range sets the shallowest depth range that will be displayed on the Sonar,  
Split Sonar, Big Digits and Circular Flasher views. The Upper Range menu choice is  
available when User Mode is set to Advanced (see Setup Menu Tab: User Mode) and  
can only be accessed from the Sonar, Split Sonar, Big Digits and Circular Flasher  
views. Upper Range is often used with Lower Range.  
For example, if you are only interested in the area between 20 and 50  
feet deep, you should set the Upper Depth Range to 20 and the Lower  
Depth Range to 50. The Sonar View will then show the 30 foot area  
between 20 and 50, and will not show the surface or the bottom  
(assuming the bottom is deeper than 50 feet), and will show greater  
detail for that area between 20 and 50 feet.  
NOTE: The Sensitivity setting is a global setting and will adjust the sensitivity of all sonar  
frequencies, as compared to specific sensitivity adjustments (such as 83 kHz Sensitivity)  
which allow you to adjust the level of sensitivity for one specific beam.  
NOTE: A minimum distance of 10 feet will be maintained between the Upper and Lower  
Range regardless of the manual settings entered.  
To adjust the Upper Range:  
1. Make sure you are in Advanced Mode, then highlight Upper Range on the  
Sonar X-PressTM Menu.  
Sensitivity at Low  
Sensitivity at Medium  
Sensitivity at High  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to increase or decrease the  
Upper Range setting. (0 to 990 feet or 0 to 327 meters [International Models  
Only], Default = 0)  
To adjust the Sensitivity:  
1. Highlight Sensitivity on the Sonar X-PressTM Menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to increase or decrease the  
Sensitivity setting. (Low = 1, High = 20, Default = 10)  
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Lower Range  
Chart Speed  
Lower Range sets the deepest depth range that will  
be displayed. Automatic is the default setting. When in automatic mode, the lower  
range will be adjusted by the unit to follow the bottom. Selecting a specific setting  
locks the depth range into Manual mode. Use both Upper and Lower Range together  
to view a specific depth range manually when looking for fish or bottom structure.  
Chart Speed determines the speed at which the  
sonar information moves across the display, and consequently the amount of detail  
shown. A faster speed shows more information and is preferred by most anglers;  
however, the sonar information moves across the display quickly. A slower speed  
keeps the information on the display longer, but the bottom and fish details become  
compressed and may be difficult to interpret. Regardless of the Chart Speed setting,  
the RTS® Window will update at the maximum rate possible for the depth  
conditions. Adjust Chart Speed to your personal preference.  
will be displayed in the lower right corner of the screen when you start manually  
M
adjusting the Lower Range to indicate that you are in Manual mode.  
For example, if you are fishing in 60 feet of water but are only  
interested in the first 30 feet (surface to a depth of 30 feet) you should  
set the Lower Depth Range limit to 30. The display will show the 0 to  
30 foot range, allowing you to see a more detailed view than you  
would see if the display went all the way to the bottom.  
To adjust the Chart Speed:  
1. Highlight Chart Speed on the Sonar X-PressTM Menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to increase or decrease the  
Chart Speed setting. (1-9, Ultra, where 1 = Slow, 9 = Fast, Ultra = Fastest,  
Default = 5)  
NOTE: A minimum distance of 10 feet will be maintained between the Upper and Lower  
Range regardless of the manual settings entered.  
Bottom View  
Bottom View selects the method used to represent  
bottom and structure on the display.  
To adjust the Lower Range:  
1. Highlight Lower Range on the Sonar X-PressTM Menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to increase or decrease the  
Lower Range setting. (AUTO, 10 to 1000 feet, 3 to 330 meters [International  
Models Only], Default = AUTO)  
Inverse represents weak returns as dark pixels and strong returns as lighter pixels.  
This has the benefit of ensuring that weak signals will be clearly visible on the display.  
Structure ID® represents weak returns as light pixels and strong returns as dark  
pixels. This has the benefit of ensuring that strong returns will be clearly visible on  
the display.  
WhiteLine® highlights the strongest sonar returns in white resulting in a distinctive  
outline. This has the benefit of clearly defining the bottom on the display.  
Bottom Black displays all pixels below the bottom contour as black, regardless of  
signal strength. This has the benefit of providing a high contrast between the  
bottom and other sonar returns on the display. Any targets such as fish, structure  
and thermoclines will be shown using the Structure ID® method.  
See Bottom Presentation for more information.  
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To adjust the Bottom View:  
1. Highlight Bottom View on the Sonar X-PressTM Menu.  
Bottom Range  
(Sonar Zoom View only, when Bottom Lock is On)  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Bottom View  
setting. (Inverse, Structure ID®, WhiteLine®, Bottom Black, Default = Inverse)  
Bottom Range allows you to control how much of the water column, measured up  
from the bottom, is shown in the Sonar Zoom View. Choose a small value to see low-  
lying bottom structure or details of the bottom return. Choose a larger value to see  
large structure in deeper water. It is possible to set the Bottom Range to be greater  
than the depth. In this case, you may see surface clutter in a wavy band that mirrors  
changes in the depth.  
Zoom Level  
(Sonar Zoom View only)  
Zoom Level sets the magnification level for the Sonar Zoom View, and is only  
available on the X-PressTM Menu when the Sonar Zoom View is active. Use Zoom to  
increase the display resolution to separate sonar returns that are very close together.  
To adjust the Bottom Range:  
1. In the Sonar Zoom View, highlight Bottom Lock on the Sonar X-Press™ Menu.  
To adjust the Zoom Level:  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Bottom Lock  
setting to on. (Off, On, Default = Off).  
1. Highlight Zoom Level on the Sonar X-PressTM Menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Zoom Level  
setting for the Sonar Zoom View. (2x, 4x, 6x, 8x, Default = 2x)  
3. Once you turn on Bottom Lock, the Bottom Range X-Press™ menu choice  
will be displayed. (10 - 60 feet or 3-20 meters [International Models only],  
Default = 15 feet)  
NOTE: The Zoom Preview Box tracks the bottom and cannot be moved by the user.  
Bottom Lock  
(Sonar Zoom View only)  
Bottom Lock changes the mode of the Zoomed view in the Sonar Zoom View. Bottom  
Lock continuously graphs the bottom at a constant point on the display regardless of  
changes in depth. This "flattens" out the bottom contour, but is effective at showing  
fish on or near the bottom.  
To turn on Bottom Lock:  
1. In the Sonar Zoom View, highlight Bottom Lock on the Sonar X-Press™ Menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Bottom Lock  
setting to on. (Off, On, Default = Off)  
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Sonar Menu Tab  
Beam Select  
Press the MENU key twice to access the Main Menu  
System and then press the RIGHT Cursor key to select  
the Sonar tab.  
Beam Select sets which sonar returns from the  
transducer will be displayed on the screen.  
When set to 200/83 kHz, the returns from both beams are blended by starting with  
the 83 kHz wide beam return, dimming it, and then overlaying it with the 200 kHz  
narrow beam return. The darker 200 kHz narrow beam sonar returns will stand out  
from the paler 83 kHz wide beam sonar returns. The Split Sonar View continues to  
display the sonar returns from each beam in their respective windows. The blended  
information is shown in the Sonar View, Sonar Zoom View and the Big Digits View.  
The RTS® Window in the Sonar View and the Circular Flasher View will only show the  
returns from the 200 kHz narrow beam.  
NOTE: Menu choices will vary depending on system settings  
such as whether the unit is set for Advanced User mode or  
what transducer is currently selected.  
When set to 200 kHz, only the returns from the 200 kHz narrow beam will be  
displayed in the Sonar View, the Sonar View, the Sonar Zoom View, the Big Digits  
View and the Circular Flasher View. The Split Sonar View will continue to display  
returns from both beams in their respective windows. The RTS® Window in the  
Sonar View will display the returns from the 200 kHz narrow beam.  
When set to 83 kHz, the returns from the 83 kHz wide beam will be displayed in the  
Sonar View, the Sonar Zoom View, the Big Digits View and the Circular Flasher View.  
The Split Sonar View will continue to display returns from both beams in their  
respective windows. The RTS® Window will display the returns from the 83 kHz  
wide beam.  
Sonar Menu  
To use Beam Select:  
1. Highlight Beam Select on the Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to select either the 200 kHz  
beam, the 83 kHz beam or the 200/83 kHz beams. (200/83 kHz, 200 kHz,  
83 kHz, Default = 200 kHz)  
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Fish ID+TM  
Fish ID Sensitivity  
Fish ID+TM uses advanced signal processing to interpret  
sonar returns, and will display a Fish Symbol when very selective requirements are met.  
When a fish is detected, a fish icon and its depth are displayed above the return that has  
been classified as being a fish. Three different fish size icons represent the intensity of  
the sonar return, and provide an indicator of relative fish size.  
Fish ID Sensitivity adjusts the threshold of the Fish  
ID+TM detection algorithms. Selecting a higher setting allows weaker returns to be  
displayed as fish. This is useful for identifying smaller fish species or baitfish.  
Selecting a lower setting displays fewer fish from weak sonar returns. This is helpful  
when seeking larger species of fish. Fish ID Sensitivity is used in conjunction with  
Fish ID+TM. Fish ID+TM must be On for Fish ID Sensitivity to affect the ability of the  
Fishing System to identify sonar returns as fish.  
Targets detected in the 200 kHz narrow beam are represented as Shaded Fish  
Symbols, and targets detected in the 83 kHz wide beam are represented as Hollow  
Fish Symbols.  
To change the Fish ID Sensitivity setting:  
1. Highlight Fish ID Sensitivity on the Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Fish ID  
Sensitivity setting. (Low = 1, High = 10, Default = 5)  
200 kHz, Narrow Beam Shaded  
Fish Symbols  
83 kHz, Wide Beam  
Hollow Fish Symbols  
Real Time Sonar (RTS®) Window  
RTS® Window sets the RTS® Window to either Wide  
or Narrow, or turns it off in the Sonar View. The RTS® Window always updates at the  
fastest rate possible and only displays returns that are within the transducer beam.  
(See Real Time Sonar (RTS®) Window for additional detail).  
Transducer Cone and Fish Arches  
When Fish ID+TM is turned off, the Fishing System shows only the raw sonar returns on  
the display. These returns will often result in "arches" forming on the display, indicating  
potential targets. Due to the transducer beam angle, the distance to a fish decreases as  
the fish moves into the beam, and then increases as it moves out again, creating a Fish  
Arch when this distance change is shown on the display. Boat speed, chart speed, and  
the position of the fish within the sonar beam greatly affect the shape of the arch.  
RTS® Window (Wide)  
RTS® Window (Narrow)  
RTS® Window (Off)  
To turn Fish ID+ on or off:  
To change the RTS® Window setting:  
1. Highlight Fish ID+ on the Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to turn the Fish ID+TM  
setting On or Off. (Off, On, Default = Off)  
1. Highlight RTS Window on the Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the RTS®  
Window setting. (Wide, Narrow, Off, Default = Wide)  
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Zoom Width  
Zoom Width adjusts the width of the Zoom window  
Depth Lines  
(Advanced)  
on the Sonar Zoom View.  
Depth Lines divide the display into four equal sections which are separated by three  
horizontal depth lines. The depth of each line is displayed along the depth scale. You  
can either turn Depth Lines On or Off. The Depth Lines menu choice is available when  
User Mode is set to Advanced (see Setup Menu Tab: User Mode).  
To change the Zoom Width Setting:  
1. Highlight Zoom Width on the Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Zoom Width  
setting. (Narrow, Medium, Wide, Default = Wide)  
Depth Lines  
Depth  
Lines  
83 kHz Sensitivity  
(Advanced)  
83 kHz Sensitivity changes the sensitivity of the 83 kHz beam. Increasing the 83 kHz  
Sensitivity will display additional weak returns and decreasing the 83 kHz Sensitivity  
will display fewer weak returns. The 83 kHz Sensitivity menu choice is only available  
when User Mode is set to Advanced (see Setup Menu Tab: User Mode).  
NOTE: 83 kHz Sensitivity is particularly useful for adjusting the sensitivity of the 83 kHz sonar  
returns in the 200/83 kHz Split Sonar View. The 83 kHz sensitivity can be adjusted without  
affecting the sensitivity of the 200 kHz returns shown in the 200 kHz sonar window.  
To change the Depth Lines setting:  
1. Make sure you are in Advanced User Mode, then highlight Depth Lines on  
the Sonar main menu.  
To set the 83 kHz Sensitivity:  
1. Make sure you are in Advanced User Mode, then highlight 83 kHz Sensitivity  
on the Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to turn the Depth Lines  
setting On or Off. (Off, On, Default = On)  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to set the 83 kHz  
Sensitivity. (-10 to +10, Default = 0)  
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Surface Clutter  
(Advanced)  
Noise Filter  
(Advanced)  
Surface Clutter adjusts the filter that removes surface clutter noise caused by algae  
and aeration. The lower the setting, the less surface clutter will be displayed. The  
Surface Clutter menu choice is available when User Mode is set to Advanced (see  
Setup Menu Tab: User Mode).  
Noise Filter adjusts the sonar Noise Filter to limit interference on the display from  
sources such as your boat engine, turbulence, or other sonar devices. The Noise Filter  
menu choice is available when User Mode is set to Advanced (see Setup Menu Tab:  
User Mode).  
NOTE: The Off setting removes all filtering; Low, Medium and High settings add  
progressive filtering of the sonar returns. In some deep water situations, the High setting  
may actually hinder your unit’s ability to find the bottom.  
Surface  
Clutter  
To change the Noise Filter setting:  
1. Make sure you are in Advanced User Mode, then highlight Noise Filter on the  
Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Noise Filter  
setting. (Off, Low, Medium, High1, High2, High3, Default = Low)  
Max Depth  
(Advanced)  
To change the Surface Clutter setting:  
Max Depth adjusts the maximum depth of operation. The performance of your  
Fishing System can be tuned to the maximum depth you will be fishing in by setting  
the Max Depth. When a maximum depth is set, your Fishing System will not attempt  
to acquire sonar data below that depth, thus increasing overall performance. When  
Max Depth is set to Auto, the Fishing System will acquire bottom readings as needed  
(within the capacity of the unit). If the bottom is deeper than the Max Depth setting,  
the digital depth readout will flash, indicating that the Fishing System cannot locate  
the bottom. The Max Depth menu choice is available when User Mode is set to  
Advanced (see Setup Menu Tab: User Mode).  
1. Make sure you are in Advanced User Mode, then highlight Surface Clutter on  
the Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Surface  
Clutter setting. (Low = 1 to High = 10, Default = 5)  
To change the Max Depth setting:  
1. Make sure you are in Advanced User Mode, then highlight Max Depth on the  
Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Max Depth  
setting. (AUTO, 10 to 1000 feet, 3 to 330 meters [International Models Only],  
Default = AUTO)  
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Water Type  
Alarms Menu Tab  
From any view, press the MENU key twice to access  
the Main Menu System. The Alarms tab will be the  
default selection.  
(Advanced)  
Water Type configures your unit for operation in fresh or salt water. The Water Type  
menu choice is available when User Mode is set to Advanced (see Setup Menu Tab:  
User Mode).  
NOTE: When an alarm is triggered, you can silence it by  
pressing any key. The alarm will be silenced, and will not  
be triggered again until a new instance of the alarm  
condition is detected.  
NOTE: In salt water, what would be considered a large fish might be 2 to 10 times bigger  
than a large fish in fresh water (depending on the type of fish you are seeking). The salt  
water setting allows for a greater range in fish size adjustment to account for this. Also,  
make sure that the Water Type is set accurately, especially in salt water, as this affects the  
accuracy of deep water depth readings.  
Alarms Menu  
To change the Water Type setting:  
1. Make sure you are in Advanced User Mode, then highlight Water Type on the  
Sonar main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Water Type  
setting. (Fresh, Salt, Default = Fresh)  
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Depth Alarm  
Depth Alarm sounds when the depth becomes equal to  
or less than the menu setting.  
Low Battery Alarm  
Low Battery Alarm sounds when the input battery  
voltage is equal to or less than the menu setting. The battery alarm will only sound for  
the battery that is connected to the 300 Series™ Fishing System. The Low Battery Alarm  
should be set to warn you when the battery voltage drops below the safety margin that  
you have determined. For instance, if you are running a trolling motor (battery  
operated), you would want to set the Low Battery Alarm to sound before the battery  
voltage drops too low for it to be used to start your main, gasoline-powered engine.  
To change the Depth Alarm setting:  
1. Highlight Depth Alarm on the Alarms main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Depth Alarm  
setting. (OFF, 1 to 100 feet, or 0.5 to 30 meters [International Models Only],  
Default = OFF)  
To change the Low Battery Alarm setting:  
1. Highlight Low Battery Alarm on the Alarms main menu.  
Fish ID Alarm  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Low Battery  
Alarm setting. (Off, 8.5V - 13.5V, Default = Off)  
Fish ID Alarm sounds when the Fishing System detects  
fish that correspond to the alarm setting. Fish ID Alarm will only sound if Fish ID+TM is on.  
Temp Alarm  
For example, if you've set the Fish ID Alarm to sound for Large fish  
only, the Fish ID alarm will sound when a large-sized fish is detected.  
Temp Alarm sounds when the water temperature  
detected by the 300 series™ reaches the Temp Alarm setting, which is either set in  
degrees Fahrenheit or Celsius [International Models only]. For example, if the Temp  
Alarm is set to 58 degrees Fahrenheit, and the water temperature falls from 60  
degrees to 58 degrees, the Temp Alarm will sound. Similarly, if the water  
temperature rises from 56 degrees to 58 degrees, the Temp Alarm will also sound.  
To change the Fish ID Alarm setting:  
1. Highlight Fish ID Alarm on the Alarms main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Fish ID Alarm  
setting. (Off, All, Large/Medium, Large, Default = Off)  
To change the Temp Alarm setting:  
1. Highlight Temp Alarm on the Alarms main menu.  
Off  
2. Use the LEFT or RIGHT 4-Way Cursor Control keys to change the Temp Alarm  
setting. (Off, 33-120 [Fahrenheit], 0-50 [Celsius], Default = Off)  
Large  
Large/Medium  
All  
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Alarm Tone  
Setup Menu Tab  
Alarm Tone selects the pitch of the alarm sound. A  
brief tone will be produced as you adjust the Alarm Tone so that you can select the  
tone that you can hear best.  
From any view, press the MENU key twice to access  
the tabbed Main Menu System, then press the  
RIGHT cursor key until the Setup tab is selected.  
NOTE: Menu choices will vary depending on system  
settings such as whether the unit is set for Advanced  
User mode, whether it is an International model, or  
whether a Temp/Speed is currently connected.  
To change the Alarm Tone setting:  
1. Highlight Alarm Tone on the Alarms main menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Alarm Tone  
setting. (High, Medium, Low, Default = Medium)  
Setup Menu  
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Units - Depth  
Units - Depth selects the units of measure for all depth-  
Units - Speed  
(with Temp/Speed)  
related readouts.  
Units - Speed selects the units of measure for speed-related readouts, and will  
appear in the menu if a Temp/Speed Accessory is connected and the paddlewheel  
has moved at least once.  
To change the Units - Depth setting:  
1. Highlight Units - Depth on the Setup menu.  
To change the Units - Speed setting:  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Units - Depth  
setting. (Meters [International Models Only], Feet, Fathoms; Default is  
Meters for International models, and Feet for Domestic models)  
1. Highlight Units - Speed on the Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Units - Speed  
setting. (kph [International Models Only], mph, kts, Default = kph for  
International models and mph for Domestic models)  
Units - Temp  
(International only)  
Units - Temp selects the units of measure for all temperature-related readouts.  
International Models Only.  
User Mode  
User Mode sets the menu system to either Normal or  
Advanced. When set to Normal (default setting,) only the basic menu options are  
shown. When set to Advanced, additional menu choices are available.  
To change the Units - Temp setting:  
1. Highlight Units - Temp on the Setup menu.  
To change the User Mode setting:  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Units - Temp  
setting. (Celsius, Fahrenheit; Default = Celsius)  
1. Highlight User Mode on the Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the User Mode  
setting. (Normal, Advanced, Default = Normal)  
Units - Distance  
(with Temp/Speed)  
Units - Distance selects the units of measure for all distance-related readouts, and  
will appear in the menu if a Temp/Speed Accessory is connected and the  
paddlewheel has moved at least once.  
Language  
(International only)  
Language selects the display language for menus. International Models only.  
To change the Units - Distance setting:  
To change the Language setting:  
1. Highlight Units - Distance on the Setup menu.  
1. Highlight Language on the Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Units - Distance  
setting. (Domestic Models: Statute Miles, Nautical Miles; Default = Statute  
Miles; International Models: Meters/Kilometers, Meters/Nautical Miles,  
Feet/Statute Miles, Feet/Nautical Miles; Default = Meters/Kilometers)  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Language  
setting. (Default = English)  
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Triplog Reset  
(with Temp/Speed)  
Select Views  
(Advanced)  
Triplog Reset resets the Triplog to zero, and will appear in  
the menu if a Temp/Speed Accessory is connected and the paddlewheel has moved  
at least once. The Triplog provides the following information: timer for elapsed time,  
distance traveled since last reset, and average speed.  
Select Views sets the available views to either hidden  
or visible in the view rotation. The view will be  
removed from the view rotation if it is set to Hidden  
and will be displayed in the view rotation if it is set to  
Visible. The following views are available:  
NOTE: See Setup Menu Tab: Select Readouts (Advanced) to find out how to display Triplog  
information on the screen.  
• Sonar View  
• Sonar Zoom View  
• Split Sonar View  
• Big Digits View  
• Circular Flasher  
• Self Test  
To Reset Triplog:  
1. Highlight Reset Triplog on the Setup menu.  
2. Use the RIGHT 4-WAY Cursor Control key to initiate Triplog Reset.  
3. The Confirm dialog box will appear. To reset the Triplog, press the RIGHT  
Cursor key once more. To cancel Reset Triplog, press the LEFT Cursor key.  
• Accessory Test  
Restore Defaults  
Select Views  
Restore Defaults resets ALL menu settings to their  
factory defaults. Use this menu choice with caution!  
The display status of these views can be changed only when in Advanced User Mode  
(see Setup Menu Tab: User Mode.)  
To Restore Defaults:  
1. Highlight Restore Defaults on the Setup menu.  
2. Use the RIGHT 4-WAY Cursor Control key to initiate restoring defaults.  
To Select Views:  
1. Make sure you are in Advanced User Mode, then highlight Select Views on  
the Setup menu.  
3. The Confirm dialog box will appear. To reset the defaults, press the RIGHT  
Cursor key once more. To cancel Restore Defaults, press the LEFT Cursor key.  
2. Use the RIGHT 4-WAY Cursor Control key to initiate this procedure.  
3. The Select Views submenu will appear, showing a list of all Views that can  
be hidden or made visible. Use the UP or DOWN Cursor keys to select a  
particular view, then use the RIGHT or LEFT Cursor keys to change the View  
status from Visible to Hidden or vice versa.  
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Select Readouts  
Depth Offset  
(Advanced)  
(Advanced, Sonar view only)  
Select Readouts sets individual digital readouts on the Sonar View. This Advanced  
feature allows you to select what data will be displayed in each of 5 fixed-position  
data windows arranged around the left and bottom edges of the Sonar View  
screen, or whether a particular window will be turned off, displaying nothing in  
that area; you can access this menu choice only when in Advanced User Mode  
(see Setup Menu Tab: User Mode.)  
Depth Offset will adjust the digital depth readout to indicate depth from the  
waterline or boat's keel. Enter a positive vertical measurement from the transducer  
to the waterline to read the depth from the waterline. Enter a negative vertical  
measurement from the transducer to keel to read the depth from the keel. This  
menu choice is available only when in Advanced User Mode (see Setup Menu Tab:  
User Mode.)  
Data windows can display readouts from  
supported accessories such as Temp/Speed. Each  
data window can either be empty or contain one of  
the following:  
To change the Depth Offset setting:  
1. Make sure you are in Advanced User Mode, then highlight Depth Offset on  
the Setup menu.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Depth Offset  
setting. (-10.0 to +10.0 feet or -3 to 3 meters [International Models only],  
Default = 0)  
- Speed (will be displayed if a Temp/Speed  
Accessory is attached and the paddlewheel has  
moved at least once)  
Temp Offset  
(Advanced)  
- Temperature  
- Triplog (will be displayed if a Temp/Speed  
Accessory is attached and the paddlewheel has  
moved at least once)  
Temp Offset will adjust the temperature readout by the amount entered. This menu  
choice is available only when in Advanced User Mode (see Setup Menu Tab: User Mode.)  
Select Readouts  
To change the Temp Offset setting:  
- Voltage  
1. Make sure you are in Advanced User Mode, then highlight Temp Offset on  
the Setup menu.  
- Water Speed (will only be displayed if a  
Temp/Speed Accessory is attached and the  
paddlewheel has moved at least once).  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Temp Offset  
setting. (-10.0 to +10.0 degrees, Default = 0)  
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Speed Calibration  
(Advanced, with Temp/Speed only)  
Troubleshooting  
Before contacting the Humminbird® Customer Resource Center, please read the  
following section. Taking the time to review these troubleshooting guidelines may  
allow you to solve a performance problem yourself, and therefore avoid sending your  
unit back for repair.  
Speed Calibration will adjust the speed readout by the percentage entered, and will  
appear in the menu if a Temp/Speed Accessory is connected and the paddlewheel  
has moved at least once, when the unit is in Advanced User Mode (see Setup Menu  
Tab: User Mode.)  
300 Series™ Doesn’t Power Up  
To change the Speed Calibration setting:  
If your 300 Series™ doesn’t power up, use the Installation Guide that also comes with  
it for specific confirmation details, making sure that:  
1. Make sure you are in Advanced User Mode, then highlight Speed Calibration  
on the Setup menu.  
• The power cable is properly connected to the 300 Series™ control head.  
• The power cable is wired correctly, with red to positive battery terminal and  
black to negative terminal or ground.  
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Speed  
Calibration setting. (-20% to +20%, Default = 0%)  
• The fuse is operational.  
• The battery voltage of the power connector is at least 10 Volts.  
Correct any known problems, including removing corrosion from the battery  
terminals or wiring, or actually replacing the battery if necessary.  
300 Series™ Defaults to Simulator with a Transducer Attached  
A connected and functioning transducer will cause the newly-started Fishing System  
to go into Normal operating mode automatically. If, when you power up the Fishing  
System, it goes into Simulator mode automatically, even though a transducer is  
already connected, this means that the control head is not detecting the transducer.  
Perform the following troubleshooting tasks:  
• Using the Installation Guide that also comes with your Fishing System, check  
to make sure that the transducer cable is securely connected to the Fishing  
System. Reconnect if necessary, and power up the Fishing System again to see  
if this fixes the problem.  
• Replace the non-functioning transducer with a known good transducer if  
available and power up the control head again.  
• Check the transducer cable. Replace the transducer if the cable is damaged or  
corroded.  
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Display Problems  
Finding the Cause of Noise  
There are several main conditions or sources of possible interference that may cause  
problems with the quality of the information displayed on the control head. Look in  
the following table for some symptoms of display problems and possible solutions:  
Electrical noise usually affects the display with many black dots at high speeds, and  
high sensitivity readings. One or more of the following sources can cause noise or  
interference:  
Problem  
Possible Cause  
Possible Source of Noise  
Other electronic devices  
Isolation  
The control head loses power at  
high speeds.  
If the power output of your boat’s engine is  
unregulated, the control head may be protecting  
itself using its over-voltage protection feature. Make  
sure the input voltage does not exceed 20 Volts.  
Turn off any nearby electronic devices to see if the  
problem goes away, then turn them on one at a  
time to see if the noise re-appears.  
The boat’s engine  
To determine whether the boat’s engine is the  
source of the noise, increase the RPMs while the  
boat is in neutral and stationary to see if the noise  
increases proportionately; if noise appears when  
you rev the engine, the problem could be the spark  
plugs, alternator, or tachometer wiring. Replace the  
spark plugs with resistor plugs, install an alternator  
filter, or route the control head power and  
transducer cables away from the engine wiring.  
When the boat moves at higher  
speeds, the bottom disappears  
or suddenly weakens, or the  
display contains gaps.  
The transducer position may need to be adjusted. A  
mix of air and water flowing around the transducer  
(cavitation) may be interfering with the inter-  
pretation of sonar data. See your Installation Guide  
for suggestions on adjusting the transducer position.  
Electrical noise from the boat’s engine may be  
interfering with sonar reception. See Finding the  
Cause of Noise for more information.  
Cavitation from the boat’s  
propeller  
Turbulence created by the propeller can cause  
noise; make sure the transducer is mounted at least  
15” (38 cm) from the propeller, and that the water  
flows smoothly over the face of the transducer at  
all times.  
There are no fish detected,  
even when you know they are  
in the water under the boat,  
or sonar readings seem weak  
or faulty.  
Sonar readings may be affected if the transducer is  
not positioned correctly (i.e. mounted at an angle, not  
straight down), or there is some kind of mechanical  
interference, either because it is mounted inside a  
hull that is too thick for proper sonar transmission,  
the bond between the transducer and the hull is not  
airtight, or because the transducer is dirty. Check with  
your Installation Guide for guidance on re-positioning  
the transducer, and make sure the transducer is clean.  
Low battery voltage may be affecting the power of  
signal transmission.  
Electrical noise from the boat’s engine may be  
interfering with sonar reception. See Finding the  
Cause of Noise for more information.  
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Specifications  
Glossary  
Sonar Terms:  
Depth Capability ................................................................................ 1000 ft (330 m)  
Power Output ............................................300 Watts (RMS), 2400 Watts (Peak to Peak)  
Operating Frequency.............................. 200 kHz and 83 kHz DualBeam PLUS™  
Alarm, Depth: Depth Alarm is a user-controllable, audible alert that sounds when  
depth is less than or equal to the setting.  
Alarm, Temperature: Temperature Alarm is a user-controllable, audible alert that  
sounds when the water surface temperature equals the setting.  
Backlight: Backlight is a user-controllable illumination for the LCD for night and low  
light use.  
Area of Coverage .................................................................. 60° @ -10 dB in 83 kHz  
20° @ -10 dB in 200 kHz  
Beam (Sonar Beam): A sonar beam is the cone-shaped projection of sound waves  
formed as sound travels underwater. See Cone Angle.  
Target Separation ................................................................ 2 1/2 Inches (63.5 mm)  
Power Requirement .................................................................................... 10-20 VDC  
LCD Matrix .............................................................................................. 320 V x 240 H  
Transducer .................................................................................................... XHS-9-20-T  
Transducer Cable Length .......................................................................... 20 ft (6 m)  
Current Draw.................................................................................................... .31 Amps  
Big Digits View: Big Digits View is a Humminbird® feature that displays the sonar  
graph and enlarged digital readouts for easy reading from a distance. This is a great  
tool when monitoring the digital depth is important - such as with higher boat  
speeds, or when viewing the unit from a distance. When speed input is available, the  
Big Digits View also shows the TripLog. See TripLog.  
Bottom Black: Bottom Black is a Humminbird® feature that "fills in" the area of the  
display below the bottom contour. Bottom Black is preferred by some anglers  
because of its high contrast and easy readability, even though it can obscure bottom  
hardness information.  
Bottom Contour: Bottom Contour is the profile of the bottom graphed to the display  
as the depth changes.  
Bottom Hardness: Bottom Hardness is the density (or composition) of the bottom,  
which can often be determined by interpreting the main sonar return. Varying levels  
of hardness can be determined by interpreting the "thickness" of the sonar return.  
Hard returns appear thin and black, softer returns appear thicker and less black. It is  
important to note that a sonar return from a sloping bottom can have the  
appearance of a softer bottom.  
NOTE: Humminbird® verifies maximum stated depth in saltwater conditions, but actual  
depth performance may vary due to transducer installation, water type, thermal layers,  
bottom composition and slope.  
Cavitation: Cavitation is the effect of air bubbles created as the propeller rotates and  
the boat moves through the water.  
NOTE: Product specifications and features are subject to change without notice.  
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Chart Speed: Chart Speed is a user-controllable feature that sets the speed at which  
sonar information moves across the display. A faster setting displays sonar information  
from more pings and shows more detail, but the information moves quickly across the  
display; a slower setting permits viewing of more sonar history, but does not display as  
much detail. The best setting is often the user's personal choice.  
Fish Arch: A Fish Arch is the apparent "arch" that appears on the display when any  
object moves through the sonar cone. The arch results from a gradual decrease in  
distance to an object as it moves into the sonar cone. The distance to an object  
changes due to the conical shape of the sonar beam, which causes the distance to be  
greater at the edges of the beam than at the center of the beam. When this distance  
change is graphed on the display, an arch appears.  
Cone Angle: The cone angle is the angular measurement of the sonar beam at a  
specific dB down point (i.e. -10 dB). See dB Down Point.  
Fish ID+: Fish ID+™ is a Humminbird® feature that uses advanced sonar processing  
algorithms to determine if a detected object is likely to be a fish. When the sonar  
signal from an object meets strict parameters, the unit draws a Fish Symbol (or icon)  
and the digital depth of the target. On DualBeam and DualBeam PLUS™ units, fish  
detected in the narrow center beam are shown as shaded symbols, and fish detected  
in the wider beam are shown as hollow symbols.  
Customizable Digital Readouts: Customizable Digital Readouts is a Humminbird®  
feature that permits the user to select the specific digital information that appears  
in the main Sonar view (i.e. Speed, Temperature, Barometric Pressure, TripLog, etc.)  
Dead Zone: The dead zone is the area of the sonar beam that is received after the  
main bottom return. Fish and other objects close to the bottom that fall within the  
dead zone will probably not be visible in the sonar beam. Precision sonar beams,  
such as the Humminbird® 20° beam, have a smaller dead zone than wider sonar  
beams.  
Fish Symbol: A Fish Symbol is the graphic that is displayed on the screen when Fish  
ID+ determines that a sonar return is likely to be a fish. See Fish ID+.  
Freeze Frame: Freeze Frame is a Humminbird® feature that pauses the sonar  
scrolling so that the image on screen can be studied with greater detail. See Instant  
Image Update.  
Decibel: A Decibel is the measurement for sound pressure level, or "intensity" of the  
sonar return. See dB Down Point.  
Frequency: Frequency is a measure of the number of sound wave cycles per second  
of a sound impulse transmitted underwater. A typical frequency for fishfinders is  
200 kHz, which offers a good balance of performance under many conditions. Lower  
frequencies, such as 50 kHz, are capable of penetrating to greater depths, but with  
less resolution. Higher frequencies, such as 455 kHz, offer greater resolution, but are  
limited in depth performance. Humminbird® uses a variety of frequencies that are  
optimized for specific applications.  
dB Down Point: The dB Down Point is the standard decibel level at which the sonar  
cone angle is measured, and is written as "@ -10 dB" or "@ -3 dB". Measurements at  
smaller down points (bigger negative numbers) indicate that the less intensive  
sonar signals are being used for the measurement.  
Display, FSTN: FSTN is an acronym for Film Super-Twist Nematic. FSTN is a  
monochrome display technology characterized by black, high-contrast pixels. All  
monochrome fixed mount Humminbird® products use FSTN technology.  
Grayscale: Grayscale is the use of varying shades of gray to represent the strength  
of the sonar signal on the display, and is a very intuitive method of presenting  
information. Traditionally, the strongest sonar signals are represented in black, and  
progressively weaker signals are represented in progressively lighter shades of gray.  
DualBeam PLUS™: DualBeam PLUS™ is a Humminbird® sonar configuration that  
uses two sonar beams simultaneously, and combines the information from both  
beams into one view by overlapping the data on-screen, or shows each beam  
individually side by side, or permits each beam to be viewed individually full screen.  
Grayscale, Inverse: Inverse Grayscale is a Humminbird® feature that reverses the  
correlation of sonar signal strength and the shade of gray typically used to represent  
it. The strongest sonar signals are represented by "white", and progressively weaker  
signals are represented in progressively darker shades of gray. While somewhat  
counter-intuitive, this method makes the sonar images crisper, and has the benefit  
Feature Memory: Feature Memory is a Humminbird® feature that retains the user's  
menu settings in permanent memory. Settings are retained even when the unit is  
powered off indefinitely.  
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of enhancing the apparent sensitivity because the weaker signals appear bolder.  
Inverse grayscale works well in very clear water. Debris-laden water often appears as  
a lot of clutter on the screen.  
Pixels: Pixels are the "picture elements", or small square blocks, that make up the  
image on the LCD. Measured as a vertical by horizontal number (i.e. 640V x 320H),  
this key specification typically indicates the quality of resolution. In fishfinders, the  
total resolution (vertical multiplied by horizontal) is often less important than the  
"Vertical Pixel" resolution. See Pixels, Vertical.  
Instant Image Update: Instant Image Update is a Humminbird® feature that  
updates all the sonar information on the display when Sensitivity and a variety of  
sonar settings (Bottom View, Range, etc.) are modified. This differs from the  
traditional functionality that only updates the new sonar information collected after  
the setting change. Instant Image Update permits more accurate fine-tuning of the  
display because the user can see the results on the complete sonar graph. When  
combined with the Freeze Frame feature, the user can adjust and understand the  
effects of many different sonar settings quickly and easily.  
Pixels, Vertical: Vertical Pixels are a number of vertical picture elements in a single  
column on an LCD display. More vertical pixels provide finer resolution of targets  
detected by sonar. Essentially, a vertical distance (the depth), when divided by a  
larger number, breaks that distance into smaller samples, each representing a  
smaller area and thus providing more detail. In fishfinders, vertical pixels are more  
critical than horizontal pixels because the horizontal axis of the display represents  
time, or history. Sonar information on the horizontal axis can vary greatly,  
depending on boat speed and the Chart Speed setting. A greater number of  
horizontal pixels show more sonar history that the boat has passed through. On  
many models, Humminbird® provides the most vertical pixels to provide a better  
display resolution. See Chart Speed and Pixels.  
Maximum Depth Menu: The Maximum Depth Menu is a Humminbird® feature that  
optimizes performance based on the maximum operational depth set by the user.  
Many Humminbird® units can operate across a very broad depth range (up to 2500  
feet) which causes the unit to "look" up to that full depth under some circumstances.  
Due to the speed of sound in water, this can result in less responsiveness because  
the unit has to wait for a longer period of time to receive the sonar signal. When the  
Maximum Depth menu is set to a lower value, the unit only looks up to the setting,  
which increases the responsiveness of the unit. This is an important feature for  
anyone operating in shallower depths!  
Power Output: Power output is the amount of sound energy emitted into the water  
by the sonar transmitter. Power output is measured using either RMS (Root Mean  
Square) or P-T-P (Peak-to-Peak) measurement systems. Either method is acceptable,  
but it is important, when comparing power outputs, to make sure that the same  
measurement system is being used for both outputs, because P-T-P numbers are 8  
times higher than RMS numbers. Greater power output allows the sonar signal to  
penetrate through weeds and thermoclines, reach deeper depths and operate more  
effectively in noisy environments, such as when the boat is running at high speed.  
Noise: Noise is unintentional, external sound waves that interfere with the optimal  
operation of sonar. Noise appears as random "dots" on the display, and is caused by  
a variety of sources. Electrical noise (from trolling motors, bilge pumps, VHF radios)  
typically manifests as a consistent dot pattern. Electrical noise can be isolated by  
selectively turning on and off other electrical devices to determine the source. Often  
re-routing the power cable, or connecting to an alternative power supply (second  
battery) can help overcome electrical noise. Hydrodynamic noise (from propeller  
and/or hull cavitation) has a more random appearance and is generally related to  
boat speed, so that faster operation results in more noise. Hydrodynamic noise can  
be overcome by proper transducer installation. Many Humminbird® products have a  
Noise Filter menu setting that allows the user to clear the screen of noise that is  
difficult to eliminate.  
Pulse Width (Pulse Length): Pulse Width is the length of time that a sonar sound  
burst is transmitted into the water. Shorter pulse widths provide better target  
separation, but cannot travel to great depths. Longer pulse widths provide better  
depth penetration, but result in poorer target separation. Humminbird® varies pulse  
width based on depth to optimize both target separation and depth performance.  
See Target Separation.  
QuadraBeam™: QuadraBeam™ is a Humminbird® sonar configuration that uses four  
sonar beams for a more detailed bottom image. QuadraBeam™ uses the DualBeam  
PLUS™ configuration for downlooking, and also adds two additional beams to look  
to the left and right. The sonar beams pointing to the left and right provide the  
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ability to spot fish and structure over a wide 90° area, and to identify on which side  
of the boat they are located. See DualBeam PLUS™.  
SONAR: SONAR is the acronym for SOund and NAvigation Ranging. Sonar  
technology uses precision sound bursts transmitted underwater to determine the  
distance and other attributes of objects in the water. Distance can be determined  
because the speed of sound in water is constant, and the time for the signal to  
return is measured. Sound also travels very quickly underwater, making sonar a  
responsive, cost-effective tool. Sonar is the basic technology behind all recreational  
and commercial fishfinding and depthfinding devices.  
Quick Disconnect Mount: The Quick Disconnect Mounting system is an exclusive  
Humminbird® feature that permits the unit to be easily removed from the mounting  
base by pressing a release button, and re-installed by simply snapping it back into  
place. All cable connections are made when installing, so that no separate wiring  
connections are required. Additionally, the mount offers 90° tilt and 360° swivel  
capability to adjust the viewing angle of the unit as you move about the boat.  
Sonar Echo Enhancement: Sonar Echo Enhancement is a Humminbird® feature that  
describes the high degree of sonar sensitivity achieved through a combination of  
transmitter/receiver and software algorithms. The result of Sonar Echo Enhancement  
is to display virtually everything in the water that is of interest to the angler, including  
bait fish, game fish, thermoclines, weed beds, subtle structure, and more.  
Real Time Sonar: Real Time Sonar is a Humminbird® technology that delivers ultra-  
fast sonar transmitter/receiver operation and results in a more detailed  
instantaneous view of what is under the boat. The Real Time Sonar window is a  
vertical band at the right side of the display that shows the instantaneous sonar  
return from the transducer at a particular instant. The RTS® Window menu option  
permits the user to adjust the window to show the full sonar signal return, or just a  
narrower band that indicates intensity using grayscale. Real Time Sonar relies on  
very fast Sonar Update Rate (Ping Speed). See Sonar Update Rate.  
Sonar Update Rate: Sonar Update Rate is the number of times per second that the  
transmitter/receiver sends and receives sonar signals. A very fast sonar update rate  
collects more information and provides a more detailed image of the bottom, fish  
and structure. Many Humminbird® units operate at up to 40 times per second when  
in single frequency operation. Due to the limitation of the speed of sound in water,  
the update rate begins to slow as depth increases to deeper than 50 feet. In very  
shallow water (less than 10 feet), however, update rates as much as 60 times per  
second can be achieved.  
Receiver: See Transmitter.  
Second Return: The Second Return is a term that describes the appearance of a  
second sonar return below the primary sonar return (bottom contour) at exactly  
twice the true depth. The second return is caused by the same sonar energy  
bouncing off the bottom once, rebounding to the water surface and then traveling  
back down to the bottom to be reflected again. Second returns are more common in  
shallow water and over hard bottoms; it is actually possible to see a third sonar  
return under some circumstances. The second return provides useful information to  
help determine bottom hardness, as areas with harder bottoms will generally create  
a second return. The second return can be used as a guide to set Sensitivity when in  
shallower water.  
Speed: Speed is the rate at which the boat moves through the water. Boat speed can  
be measured as Speed Over Ground or Speed Through Water. Speed Over Ground is  
provided by GPS, and is the measurement of the boats progress across a given  
distance. Speed Through Water is provided by a speed paddlewheel, and is the  
measurement of the flow past the boat, which may vary depending on current  
speed and direction. Speed Through Water is most critical for anglers using  
downriggers, as it impacts the running depth of the down riggers. Speed Over  
Ground is optimal for navigation, as accurate destination times can be derived from  
this measurement. Humminbird® products allow for input and display of both  
sources.  
Sensitivity: Sensitivity is a user feature that adjusts the sensitivity of the sonar  
system to show more or less detail in the water. Higher sensitivities are often  
preferred; however, when the water contains debris (silt, storm debris, etc.) it can be  
difficult to pick out targets. Conversely, if sensitivity is set too low, relevant targets  
may be missed.  
Structure: Structure is a general term for objects on the bottom that present a  
discontinuity and are a likely attractor for fish. This includes bottom contour features  
(drop-offs, humps, and holes), standing structure (stumps, timbers, brush piles) and  
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a wide range of other potential objects (sunken boats, reefs). Humminbird® units  
excel at showing structure with great detail over a wider area due to unique sonar  
configurations developed for the angler.  
Transducer: The transducer mounts on the boat and is in contact with the water. It  
converts the electrical energy from the transmitter into sound energy, forming the  
sonar beam. Internally, the transducer consists of one or more piezo electric disks  
that expand by very minute amounts to create the sound wave. This element also  
works in reverse, converting the returned sound energy back into an electrical signal  
that the receiver interprets. Transducers are available for many specific mounting  
applications for the boat, such as a transom mount, trolling motor mount, etc.  
Humminbird® offers many sophisticated transducers, often with multiple piezo  
electric elements designed to form specifically-shaped sonar beams, providing the  
angler with superior tools for finding and catching fish. See Transmitter and SONAR.  
Structure ID®: Structure ID® is a Humminbird® feature that describes the traditional  
grayscale method of presenting sonar information. See Grayscale.  
Surface Clutter: Surface Clutter is a phenomenon where sonar returns are reflected  
off of tiny objects near the surface of the water, including algae and even air  
bubbles. Typically, saltwater environments have significantly greater surface clutter  
than freshwater due to continuous wind and wave action that causes aeration at the  
surface. The Surface Clutter menu provides manual control to bias the default  
settings under extreme conditions.  
Transmitter: The transmitter and receiver are matched parts of the sonar system  
that send (transmit) and listen to (receive) the sonar signals, and work in  
conjunction with the transducer. Humminbird® transmitters have an extremely fast  
cycling design that can send signals up to 60 times per second, as well as produce  
the varying levels of power output needed for different depths and conditions.  
Additionally, the transmitter has the capability to create very precise sonar pulses  
needed for a high degree of target separation. Humminbird® receivers are extremely  
sensitive, but within a narrow "bandwidth" to discriminate against noise from  
external sources. Additionally, the receiver offers a wide "dynamic range" which  
provides the ability to receive very strong signals alternating with very weak signals,  
without the strong signal overwhelming the weak signal. See Transducer and Noise.  
Target Separation: Target Separation is the measurement of minimum distance that  
a fishfinder needs to be able to recognize two very close objects as two distinct  
targets (i.e. two fish hanging very close, or a fish hanging very close to structure).  
Humminbird® findfinders provide a very good 2 1/2 inches of target separation in  
shallower than 100 feet of depth. Target separation decreases as depth increases  
due to the need for a longer Pulse Width to achieve greater depth. See Pulse Width.  
Thermoclines: Thermoclines are water layer(s) of distinctly different temperatures  
that create a sonar reflection due to the density of the differing water temperatures.  
Typically a thermocline will appear as a continuous band across the display at some  
distance above the bottom contour. Thermoclines are of interest to anglers because  
fish will suspend above or below the thermocline as they seek the optimum  
temperature and oxygen levels.  
TripLog: TripLog is a Humminbird® feature that provides an on-screen counter for  
Elapsed Time, Average Speed and Total Distance traveled, and requires a speed input  
to activate the feature. TripLog appears on the Big Digits View, and can be reset to  
zero through the TripLog menu.  
Time Variable Gain: Time Variable Gain is a processing step applied to the sonar  
return to "normalize" the data so that objects of equal size (i.e. fish) appear to be the  
same size, even if they are separated by a good distance. Time Variable Gain is a  
fundamental attribute of good sonar.  
TrueArch®: TrueArch® is a Humminbird® feature that provides true fish arches, as  
opposed to artificial arches or symbols. Humminbird® units are capable of producing  
fish arches due to the extremely sensitive DualBeam PLUS™ sonar receiver with its  
wide 60° sonar beam. See Fish Arch.  
Total Screen Update®: A Humminbird® feature that refreshes and updates all the  
sonar information on the display when a range change occurs. Without Total  
Screen Update®, only the most recent sonar information would be drawn to the  
new range, and the old sonar information would continue to scroll off the screen  
at the old range.  
Viewing Angle: Viewing Angle is an attribute of an LCD that characterizes visibility  
of the display when viewing from off the central axis, such as when standing to the  
side of the fishfinder. Wider viewing angles are better because the information  
remains visible even when viewing from the side.  
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WhiteLine®: WhiteLine® is a Humminbird® feature that highlights the strongest  
sonar return on the display using a very light gray band. This is preferred by some  
anglers who have grown accustomed to the feature on paper graph chart recorders.  
Contact Humminbird®  
Contact the Humminbird® Customer Resource Center  
in any of the following ways:  
WideSide®: WideSide® is a Humminbird® sonar configuration used in an optional  
transducer. WideSide® uses three sonar beams pointing to the left, right and down.  
Beams pointing to the left and right are effective for spotting fish and structure near  
the surface or on the bank. The downlooking beam provides depth information  
directly below the boat.  
By Telephone  
X-Press™ Menu: The X-Press™ Menu is a Humminbird® feature that makes the most  
commonly-used menu selections available with one press of the MENU key. Items  
that appear on the X-Press™ Menu are related to the current view, and present the  
most logical choices for that view.  
(Monday - Friday 8:00 a.m. to 4:30 p.m. Central Standard Time):  
1-800-633-1468  
Zoom: Zoom is a feature that focuses in on a smaller area of the bottom to provide  
enhanced resolution. With enhanced resolution, the angler can more easily see fish  
hanging in structure or multiple fish hanging close together. Split screen zoom  
divides the display into the full range view on the right, and the zoomed view on the  
left. Humminbird® offers One-Touch® Zoom which allows the zoom feature to be  
easily accessed from the regular sonar view with just one key press, eliminating the  
need to use menus to access the feature.  
By e-mail  
(typically we respond to your e-mail within three business days):  
Zoom, Bottom Lock: Bottom Lock Zoom is a feature that focuses on a smaller area  
just above the bottom to provide enhanced resolution. Unlike regular zoom, it  
continuously graphs the bottom at a constant point on the display regardless of  
changes in depth. This "flattens" out the bottom contour, but is effective at showing  
fish on or near the bottom, and is preferred by many saltwater anglers.  
For direct shipping, our address is:  
Humminbird  
Service Department  
678 Humminbird Lane  
Eufaula, AL 36027 USA  
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