Garmin Fish Finder 160 BLUE User Manual

Fishfinder 160 Blue  
owners  
manual  
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Thank you for choosing the GARMIN Fishfinder 160 Blue™. This  
product is designed for easy operation and to provide years of reliable  
service.  
Introduction  
Please take the time to read this Owners Manual, and learn the opera-  
tion of your new unit. This will help ensure that you get the most from  
the Fishfinder 160 Blue.  
Customer Service  
Product Registration  
If you encounter a problem, or just have a question, contact  
our Product Support Department at 913-397-8200 or 800-800-1020,  
Monday — Friday 8:00 a.m. to 5:00 p.m. Central Time.  
Help us better support you by completing our  
on-line registration today! Have the serial number  
of your Fishfinder 160 Blue handy and connect  
to our web site (www.garmin.com). Look for the  
Product Registration link on the Home page.  
Enjoy your new Fishfinder 160 Blue and once again thank you for  
choosing GARMIN.  
Why should you register your Fishfinder 160  
Blue?  
• Notification of product updates  
• Notification of new products  
• Lost or stolen unit tracking  
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GARMIN Corporation warrants this product to be free from defects in materials  
and manufacture for one year from the date of purchase. GARMIN will, at its sole  
option, repair or replace any components that fail in normal use. Such repairs or  
replacement will be made at no charge to the customer for parts or labor. The  
customer is, however, responsible for any transportation costs. This warranty does  
not cover failures due to abuse, misuse, accident or unauthorized alteration or  
repairs.  
Introduction  
Limited Warranty  
THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE  
AND IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED OR  
STATUTORY, INCLUDING ANY LIABILITY ARISING UNDER ANY WARRANTY  
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE,  
STATUTORY OR OTHERWISE. THIS WARRANTY GIVES YOU SPECIFIC LEGAL  
RIGHTS, WHICH MAY VARY FROM STATE TO STATE.  
IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL,  
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER RESULTING  
FROM THE USE, MISUSE, OR INABILITY TO USE THIS PRODUCT OR  
FROM DEFECTS IN THE PRODUCT. SOME STATES DO NOT ALLOW THE  
EXCLUSION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE  
ABOVE LIMITATIONS MAY NOT APPLY TO YOU.  
To obtain warranty service, call the GARMIN Customer Service department  
(913-397-8200 or 800-800-1020) for a returned merchandise tracking number.  
The unit should be securely packaged with the tracking number clearly marked  
on the outside of the package and sent freight prepaid and insured to a GARMIN  
warranty service station. A copy of the original sales receipt is required as the proof  
of purchase for warranty repairs. GARMIN retains the exclusive right to repair or  
replace the unit or software or offer a full refund of the purchase price at its sole  
discretion. SUCH REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY  
FOR ANY BREACH OF WARRANTY.  
ii  
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The Fishfinder 160 Blue Standard Package Includes:  
• Fishfinder 160 Blue  
Introduction  
• Protective Front Cover  
• Surface Mount Bracket with Knobs  
• Power/Data Cable  
Packaging and Accessories  
• Owners Manual and Quick Reference Guide Label  
• Dual Frequency Transom Mount Transducer (with depth/temp)* and  
separate Speed Sensor*  
Optional Dual Frequency Transducers and Accessories:  
Plastic Transom Mount (with depth/temp)*  
Bronze Thru-Hull (depth only)  
Plastic Thru-Hull (depth only)  
Speed Sensor*  
Temperature Sensor  
10’ Transducer Extension Cable  
20’ Transducer Extension Cable  
Second Mounting Station  
Flush Mounting Kit  
Swivel Mount, 1” RAM  
Cigarette Lighter Adapter  
Power/Data Cable  
18-Pin A/C PC Adapter (US)  
18-Pin A/C PC Adapter (EURO)  
iii  
* Included with Optional Package  
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Unit Operation...................................................10-29  
Keypad Functions .................................................................10  
Backlight ................................................................................10  
Display Information ...............................................................11  
Introduction  
Using the Adjustment Bar:  
Table of Contents  
Range .....................................................................................12  
Zoom .....................................................................................13  
View.......................................................................................13  
Gain .......................................................................................14  
Setup Menu:  
Introduction..........................................................i-vi  
Customer Service ..................................................................... i  
Limited Warranty .................................................................... ii  
Packaging and Accessories...................................................... iii  
Unit Display........................................................................... vi  
Chart Tab  
Frequency ..............................................................................15  
Fish Symbols..........................................................................16  
Whiteline ...............................................................................17  
Scroll Speed ...........................................................................17  
Scale.......................................................................................18  
Installation ...........................................................1-9  
Transducers............................................................................. 1  
Transom Mount Installation ................................................... 2  
In-hull Installation .................................................................. 3  
Speed Sensor Installation......................................................... 4  
Wiring Harness Installation..................................................... 5  
Wiring to a Fuse Block ............................................................ 5  
Display Installation (Surface Mount) ....................................... 7  
Display Installation (Flush Mount).......................................... 8  
Testing the Installation ............................................................ 9  
Tools Tab  
Depth Line .............................................................................18  
Flasher ...................................................................................19  
Simulator ...............................................................................19  
Noise Reject ...........................................................................19  
Numbers Tab  
Number Size ..........................................................................20  
Battery Voltage........................................................................21  
Temperature...........................................................................21  
Speed .....................................................................................22  
Depth Number.......................................................................22  
iv  
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Alarms Tab  
Fish Alarm ............................................................................23  
Shallow Water ........................................................................24  
Deep Water ............................................................................24  
Battery Voltage .......................................................................25  
Introduction  
Table of Contents  
System Tab  
Contrast .................................................................................25  
Beeper....................................................................................26  
NMEA Output........................................................................26  
Language................................................................................26  
On the Water .................................................... 30-35  
Understanding Sonar..............................................................30  
Transducer Coverage..............................................................31  
Understanding the Chart........................................................32  
Whiteline ...............................................................................33  
Thermoclines .........................................................................34  
Simulator Mode......................................................................35  
Calibrations Tab  
Keel Offset..............................................................................27  
Water Type .............................................................................27  
Calibrate Speed ......................................................................27  
Units Tab  
Appendix A: Specifications.................................... 36  
Appendix B: Alarm Messages and Icons................ 37  
Appendix C: Index ................................................. 38  
Depth ...................................................................................28  
Temperature...........................................................................28  
Speed .....................................................................................28  
Memory Tab  
Remember..............................................................................29  
Factory Setup.........................................................................29  
Software Version.....................................................................29  
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The Fishfinder 160 Blue is capable of displaying a variety of useful  
information about the underwater environment. Below are a few things  
the unit will help you see.  
Introduction  
Water Depth  
The unit displays water depth and can provide a warning for shallow  
or deep-water conditions.  
What can the Fishfinder 160 Blue  
Display?  
Battery Voltage  
The unit can display the battery voltage that is available to the unit.  
Water Temperature  
If equipped with a capable transducer or temperature sensor, the unit  
can display the water temperature.  
Speed Over Water*  
If equipped with a capable transducer or speed sensor, the unit can  
display the boat’s speed over water.  
Fish  
The unit displays fish as arches or fish symbols, and can alert you when  
a fish is detected.  
Thermocline and Structure  
With GARMIN’s See-Thru® technology, the Fishfinder 160 Blue can  
display more than just the thermocline and structure. The unit displays  
fish in and below the thermocline, trees, brush and deadfall like you  
have never seen before!  
Bottom Shape and Type  
Garmin’s unique DCG® (Depth Control Gain) system provides a clear  
graphic representation of the bottom type and its shape.  
The screen shots shown in this manual are simulated.  
Images seen during actual operation will be influ-  
enced by environmental conditions, and may differ  
from the images shown here.  
Transducer Frequency*  
If equipped with a capable transducer, the unit will display the  
frequency selected for use; either 200kHz, 50kHz or Dual.  
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vi  
Transducers  
The transducer acts as the eyes and ears of your new sonar. Proper  
transducer selection and installation are critical to the operation of your  
unit.  
Installation  
Included in the Optional Package is a 200/50kHz frequency (10°/40°  
cone angle), depth and temperature sensing, transom mount transducer.  
This transducer provides good all-around performance. Other optional  
dual frequency transducers are available from your local dealer or GARMIN.  
Transducers  
The transducer transmits sound waves toward the bottom in a cone  
shape. The wider the cone angle, the larger the coverage area at a given  
depth. While it is good to see as large of an area as possible, it is best to  
select a frequency setting that suits the water that you are on.  
50 kHz  
wide cone angle  
With a dual frequency transducer, you may select either a 200kHz  
frequency, a 50kHz frequency or both. The 50kHz frequency setting  
provides a wide cone angle. This wide cone angle produces a large coverage  
area, but less detailed bottom resolution. In areas where bottom contours  
change quickly, this can result in “dead zones” where fish cannot be seen.  
200 kHz  
narrow cone angle  
dead zone  
fish not seen  
In contrast, the 200kHz frequency setting provides a narrow cone  
angle. This narrow cone angle produces a smaller viewing area (compared  
to a wide cone angle at the same depth), but with improved bottom  
resolution and a smaller dead zone.  
X
X
The Dual frequency setting will provide you the most accurate depth  
and fish returns by transmitting signals at both 200kHz and 50kHz.  
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Proper transducer installation is key to getting the best performance  
from your new unit. If the transducer lead is too short, extension cables  
are available from you GARMIN dealer. DO NOT cut the transducer lead  
or any part of the transducer cable, as this will void your warranty. The  
cable cannot be spliced and connected to any existing (GARMIN or non-  
GARMIN) transducer cables.  
Installation  
Mounting the Transducer  
Following are some tips and basic installation instructions for the  
optional dual frequency transducer and speed sensor. Detailed installation  
instructions are provided in the transducer kits.  
DO NOT mount the transducer behind strakes,  
struts,fittings,waterintakeordischargeports,or  
anything that creates air bubbles or causes the  
water to become turbulent. It is important that  
the transducer be in calm, non-turbulent water for  
optimal performance.  
Transom Mount Installation  
Dual Frequency Transom Mount Transducer (with depth/temp).  
NOTICE: Both the Transom Mount Transducer  
and the Speed Sensor must be installed sepa-  
rately. These two sensors may not be combined.  
Apply marine sealant to all  
screw threads to prevent water  
from seeping into the transom.  
Mount the transducer cable cover  
well above the waterline.  
Transducer should extend 1/8" below  
fiberglass hull or 3/8" below aluminum hull  
Make sure that the transducer is  
below water level when the boat  
is on plane at high speed  
OK  
Do not mount transducer directly in the  
path of the prop. The transducer can cause  
cavitation that may degrade the boat's performance  
and damage the prop.  
Mount the transducer parallel with the bottom.  
2
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In-Hull Installation  
To avoid drilling a hole to mount a thru-hull transducer, a transom  
mount transducer may be used with epoxy inside a boat (also called “shoot-  
thru-hull” installation). For a transducer to be mounted inside the hull  
(shoot-thru, not thru-hull), the boat must be fiberglass, no core (contact  
your boat manufacturer if you are unsure). Test by placing a small amount  
of water inside the hull, placing the transducer on top of the water, then  
verifying the accuracy of the locators versus the current water depth. If  
they are the same, use epoxy (non-silicone based) to affix the transducer  
to the inside of the hull. If using a temperature sensing transducer, the  
temperature displayed will reflect the hull temperature.  
Installation  
Mounting the Transducer  
Many modern hulls have a pre-located pocket for  
In-hull transducer installation. If you are unsure  
if your hull is equipped with a prelocated pocket,  
contact your hull manufacturer.  
Selecting a Location  
The location has to be solid fiberglass, devoid of any air bubbles,  
laminates, fillers or dead air space. The location needs to be in an  
area of clean water at all speeds. Do not place the transducer over  
any strakes or behind any obstruction on the hull that would create  
turbulence.  
Weight  
transducer to  
hold it in place  
PVC Pipe  
Testing the Location  
or a Can  
Place the transducer in the water, pointed directly at the bottom, and  
set the unit for optimum performance. Place the transducer in the test  
device as show on the side bar. If the sonar performance is significantly  
degraded, another location will need to be tested.  
Fill Pipe or Can  
with water or a  
light mineral oil  
Strip Caulk or  
RTV Sealer  
Hull Surface  
Testing the Location  
Continued on page 4  
3
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In-Hull Installation (continued)  
Installing the Transducer:  
Installation  
1. Lightly sand the surface of the hull and face of the transducer with 400  
grit wet or dry sandpaper.  
2. Build a dam using strip caulk about 1/4” tall. Pour about 1/8” of 2-part,  
slow cure epoxy in the dam. Place the transducer in the epoxy, turning  
the transducer to work out any air bubbles.  
Mounting the Transducer/  
Speed Sensor  
3. Weight the transducer in place and allow to cure for 24 hours.  
Weight transducer in place  
for at least 24 hours  
Apply twisting motion  
to eliminate any  
trapped air bubbles  
Slow cure  
2-part epoxy  
Speed Sensor Installation  
The speed sensor should be mounted as near the center of the boat  
as possible. Like the transducer, for the speed sensor to operate properly,  
it should be located in non-turbulent water. Follow the directions in the  
speed sensor installation instructions to assemble the speed sensor with  
the mounting bracket, drill holes in the transom, mount the assembly and  
route the cable.  
Strip Caulk or  
RTV Sealer  
Installing the Transducer  
Drill a 3/4” hole well above the water line.  
Coat the inside of the hole with Marine Sealant.  
OK  
Position Cable Clamps about one-third of  
the distance from the hole to the transducer.  
Adjust the speed sensor so it is parallel with the bottom  
of the boat. If the speed sensor is not adjusted properly,  
the sonar may experience inaccurate or degraded speed  
readings.  
Drill 1/8” pilot holes 3/8” deep for the mounting screws.  
Coat the screws with Marine Sealant before installing them.  
4
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Wiring Harness Installation  
The Fishfinder 160 Blue comes with a wiring harness that connects  
the unit to power and the transducer with one easy-to-remove connection.  
Make sure the wiring harness will reach the unit before beginning  
installation.  
Installation  
Installing the Wiring Harness  
If it is necessary to extend the power/data wires, use a wire of compa-  
rable size and keep your extension as short as possible. If the transducer  
lead is too short, DO NOT cut the transducer lead to lengthen the cable.  
This will void the warranty. Transducer extension cables are available in 10’  
or 20’ lengths from your GARMIN dealer.  
10-18 Volt Boat Supply  
+
Wiring to a Fuse Block  
Install 2-Amp Fuse  
If your boat has an electrical system, it may be possible to wire the unit  
directly to an unused holder on your current fuse block. If you are using the  
boats fuse block, remove the in-line fuse holder supplied with the unit.  
Installing the Wiring Harness:  
1. Determine the polarity of the fuse holder using a Test Light or Volt Meter.  
2. Install the Red (+) wire on the Positive Fuse Holder Terminal.  
3. Install the Black (-) wire on the Negative Fuse Holder Terminal.  
4. Install a 2 amp fuse in the Fuse Holder.  
-
Boat Ground  
During a typical installation, only the Red and Black wires are used. The  
Blue wire supplies NMEA data, and doesn’t have to be connected for normal  
operationoftheunit.TheYellow(alarm)wireisnotused,becausetheFishfinder  
160 Blue does not support external alarms.  
Fishfinder 160 Blue  
Continued on page 6  
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Wiring Harness Installation (continued)  
If your boat does not have a fuse block, the unit can be wired directly  
to the battery. Make sure the 2-Amp in-line fuse supplied with the unit  
is installed.  
Installation  
The Fishfinder 160 Blue can be connected to another piece of NMEA-  
compatible electronic equipment. If equipped with a capable transducer  
and speed sensor, the Fishfinder 160 Blue sends depth, temperature and  
speed information that could be displayed on another device.  
Installing the Wiring Harness  
Power/Data  
Connection  
(BLUE) NMEA Out  
(RED) +10 to +15 VDC  
(BLACK) Ground  
TRANSDUCER  
CONNECTION  
Speed  
Temp Transducer  
Power Source  
NMEA Device  
Connecting a Transducer to Multiple Sensors  
6
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Display Installation (Surface Mount)  
The Fishfinder 160 Blue can be mounted to a flat surface using the  
supplied Surface Mount Bracket.  
Installation  
Surface Mounting the Display:  
Installing the Display  
1. Position the Surface Mount Bracket in the desired location. Leave  
approximately 2” behind the unit for cable clearance.  
Mounting Bracket  
2. Mark the location of the four mounting holes with a pencil.  
3. Drill pilot holes for the mounting fasteners (not included in kit).  
4. Secure the Surface Mount Bracket using the mounting fasteners.  
5. Slip the unit into the Surface Mount Bracket.  
6. Tighten the knobs to secure the unit to the bracket.  
The Surface Mount Bracket is designed to be secured using a flat head screw.  
If you use a screw with a countersunk head, you risk damaging the Surface  
Mount Bracket.  
Surface Mount  
Bracket  
OK  
7
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Display Installation (Flush Mount)  
The Fishfinder 160 Blue can be mounted flush against a dash or  
electronics rack that is no more than 1/4” thick.  
Installation  
Flush Mounting the Display:  
1. Remove the Mounting Bracket from the back of the unit by removing  
its four screws.  
Installing the Display  
2 Using the Mounting Bracket as a template, mark the location of the four  
mounting holes and the center relief hole.  
3. Drill the mounting holes using a 6mm or 15/64” drill.  
4. Using a 1-7/8” hole saw, cut the center relief.  
Be careful not to install screws that are too long!  
The mounting holes in the unit are approximately 1/4”  
deep. Installing screws that are too long will damage  
the unit and void the warranty.  
5. Secure the unit to the mounting surface using four M5 screws.  
If you are flush mounting the unit on a sheet metal surface, use the  
mounting bracket on the back to help reinforce the metal. You may also  
purchase the optional Flush Mounting Kit and follow the flush mounting  
instructions included with the kit.  
Mounting Bracket  
8
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Testing the Installation  
While it is possible to perform some checks with the boat trailered, the  
boat should be in the water to properly test the installation.  
Installation  
Press the POWER button and the Fishfinder 160 Blue should power  
on. If the unit fails to power on, verify that the wiring adapter is seated  
properly in the back of the unit, the Red and Black wires are connected to  
the correct polarity, and the 2-Amp fuse is installed and not blown. If the  
unit is connected to a power supply that exceeds 18 VDC, a ‘Battery Voltage  
High’ warning will be displayed and the unit will turn off.  
Testing the Installation  
As the unit powers on, it should immediately start showing the bottom.  
Verify that the unit is not in the simulator mode. If the unit is in the  
simulator mode, make sure that the transducer is connected to the wiring  
harness.  
Simulator Message and Icon  
To test the transducer and speed sensor installation, gradually increase  
the boats speed while checking the unit operation. If the unit displays  
intermittently or fails to display, verify that the transducer and speed sensor  
are aligned parallel with the bottom. If necessary, adjust their heights until  
the unit operates correctly. It may be necessary to make several adjustments  
to ensure proper operation throughout the speed range. If the signals do  
not improve, it may be necessary to move the transducer or speed sensor  
to a different location.  
If the Fishfinder 160 Blue is in Simulator Mode, the message  
“Simulator On” will be displayed along the bottom of the  
screen. The message will be replaced by the “S” icon indicat-  
ing that the unit is running in simulator mode.  
When adjusting the depth of the transducer, make the adjustments in small  
increments, like 1/8”. Placing the transducer or speed sensor too deep can  
adversely affect the boat’s performance and increase the risk that they may  
strike underwater objects.  
9
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Arrow Keys  
Unit Operation  
The ARROW keys are used to select items on the Adjustment Bar and  
Setup Menu and to change field data.  
Keypad Functions  
Enter Key  
The ENTER key is used to activate/deactivate the Adjustment Bar and  
Setup Menu data fields for review or change.  
Setup Key  
The SETUP key is used to activate/deactivate the Setup Menu.  
Power and Backlight Key  
The POWER key is used to turn the unit on/off and to activate the  
display backlight. Press and hold to turn the unit on or off.  
Pressing the POWER key briefly will activate the backlight or change  
the backlight setting. There are three backlight settings; Off, Medium  
and High.  
10  
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At the top left of the display you will find the Adjustment Bar and  
a variety of user-selectable information including Depth, Battery Voltage,  
Water Temperature, and Speed Over Water. To provide data on Speed Over  
Water, the Fishfinder 160 Blue requires an additional speed sensor.  
Unit Operation  
The Depth Scale and the Flasher are displayed from top to bottom  
along the right side of the display. Messages and Alarm Icons are displayed  
along the bottom.  
Describing The Display  
Adjustment Bar  
Depth  
Battery Voltage  
If the unit is unable to track the bottom for any reason, the digits in the depth  
window will flash on and off to alert the user that the unit is not tracking the  
bottom.  
Water Temperature  
Speed Over Water  
Depth Scale  
Depth Line  
Flasher  
Transducer Frequency  
Alarm/Message Icons  
11  
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Using the Adjustment Bar  
The Adjustment Bar allows direct access to the most commonly  
changed settings. These include the Depth Range, Zoom setting, and the  
Gain (sensitivity) of the unit.  
Unit Operation  
Place the highlight (white bar) over the desired selection using the  
RIGHT or LEFT Arrow key, and the current setting will be displayed in  
the highlight. To immediately change the setting, press the UP or DOWN  
Arrow key. If you wish to review the available settings before making a  
change, press the ENTER key to activate the adjustment list.  
The Adjustment Bar  
Current Setting  
Range  
The Range Adjustment is used to set the display depth range. The  
unit can be set to automatically track the bottom or set to a user-specified  
depth range.  
Adjustment List  
To select a Depth Range:  
1. Highlight ‘Range’ on the Adjustment Bar.  
2. Using the UP or DOWN Arrow, place the pointer at the desired depth  
range.  
To set the unit to automatically track the bottom:  
Range Adjustment  
1. Highlight ‘Range’ on the Adjustment Bar.  
2. Using the UP or DOWN Arrow, select Auto’ at the top of the  
adjustment list.  
12  
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Zoom  
The Zoom Adjustment is used to quickly select a display zoom scale.  
Unit Operation  
To change the Zoom Scale:  
1. Highlight ‘Zoom’ on the Adjustment Bar.  
The Adjustment Bar  
2. Using the UP or DOWN Arrow, select the desired display zoom level.  
When a scale other than ‘No Zoom’ is selected, the Adjustment Bar will  
display a new selection labeled ‘View.’  
View  
The View Adjustment is available only when a Zoom Scale other than  
‘No Zoom’ is selected. This setting allows you to select a specific area to  
view on the display, or allows the unit to automatically select a viewing area  
based on the bottom.  
To change the View:  
1. Highlight ‘View ‘on the Adjustment Bar.  
2. Press the UP or DOWN Arrows to change the setting.  
Zoom Adjustment  
To have the unit automatically set a View:  
1. Highlight ‘View’ on the Adjustment Bar.  
2. Using the UP or DOWN Arrow, move the slider to the top or bottom of  
the range, then release and press the Arrow again.  
View Adjustment  
13  
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Gain  
The Gain Adjustment allows the user to control the sensitivity of the  
units receiver. This provides some flexibility in what is seen on the display.  
To see more detail, increase the receiver sensitivity by selecting a higher gain  
(+). If there is too much detail or if the screen is cluttered, lowering the  
sensitivity (-) may increase the clarity of the display.  
Unit Operation  
The Adjustment Bar  
To change the Gain:  
1. Highlight ‘Gain’ on the Adjustment Bar.  
2. Using the UP or DOWN Arrows, move the pointer to the desired setting.  
Normal Gain  
Maximum Gain  
Minimum Gain  
14  
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SETUP MENU  
The Setup Menu contains the unit settings that should not require  
frequent change. The Setup Menu is divided into eight tabs: Chart, Tools,  
Numbers, Alarms, System, Calibrations, Units, and Memory. Each tab will  
be described in more detail in this section.  
Unit Operation  
Setup Menu: Chart Tab  
To enter and exit the Setup Menu, press the SETUP button on the face  
of the unit. The first time that the SETUP button is pressed, the Setup  
Menu will be displayed with the ‘Chart’ tab highlighted in black. Pressing  
the UP or DOWN arrow will move the highlight between the tab selections.  
Press the RIGHT arrow to access the selection fields. Each time the Setup  
Menu is accessed, the unit will return to the last edited selection field. Press  
the LEFT arrow key to get back to the tabs.  
Chart Tab  
The ‘Chart’ tab allows the user to determine the appearance of the  
scrolling chart display. To access the ‘Chart’ tab, place the highlight over  
it using the arrow keys.  
Frequency  
Frequency Settings  
The ‘Frequency’ setting allows you to choose a transducer frequency.  
Frequency refers to the “pitch” of the sound that the transducer sends and  
receives. You may choose ‘200kHz’ (default), ‘50kHz’ or ‘Dual’ frequency.  
Continued on page 16  
15  
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Frequency (continued)  
The wide cone angles associated with low frequencies (40° for 50kHz)  
provide a large coverage area for finding fish. However, this also means that  
wide cone angles produce less bottom detail and resolution. The narrow  
cone angles associated with high frequencies (10° for 200kHz) provide  
better bottom resolution and crisper detail, but therefore cannot show a  
large coverage area for finding fish. Dual frequency mode combines the  
improved contour detail and depth readings of the 200kHz frequency with  
the wide coverage area of the 50kHz frequency.  
Unit Operation  
Setup Menu: Chart Tab  
To select a Frequency:  
1. Highlight the ‘Chart’ tab on the Setup Menu.  
2. Highlight the ‘Frequency’ selection field and press ENTER.  
3. Using the UP or DOWN Arrow, choose ‘200kHz,’ 50kHz’ or ‘Dual’ and  
press ENTER. The selected frequency will be displayed in the bottom  
left-hand corner of the chart.  
Fish Symbols  
Fish Symbols  
Arches wil be displayed representing suspended targets.  
All available backgroud information will be displayed.  
‘Fish Symbols’ allows the user to determine how the chart will display  
underwater targets and background information. If ‘Fish Symbols’ is set  
to ‘Off,’ the unit will display all of the available information about the  
underwater environment. If a fish symbol is selected, the chart will display  
only the information related to that symbol.  
Suspended targets displayed as symbols. In this mode,  
background information will still be displayed making  
fish identification easier.  
Same as above, with target depth displayed.  
To select a Fish Symbol:  
1. Highlight the ‘Chart’ tab on the Setup Menu.  
2. Highlight the ‘Fish Symbols’ selection field and press ENTER.  
Suspended targets displayed as symbols. No background  
information will be displayed in this mode.  
3. Using the UP or DOWN Arrow, select the desired symbol and press  
ENTER.  
Same as above, with target depth displayed.  
16  
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NOTE: When the frequency is set to ‘Dual,’ the appearance  
ofthefishsymbolswillchange.Fishreturnsfromthecenter  
ofthebeamwillbeblack,butthefishreturnsfromtheedges  
of the beam will be clear.  
F
Unit Operation  
Setup Menu: Chart Tab  
Whiteline  
‘Whiteline’ controls how the unit displays information about the  
bottom type (hard or soft). With the Whiteline ‘OFF’, the bottom return  
will display as black and contain no information on bottom hardness. With  
Whiteline ‘ON’, the bottom return will become gray-scaled. The degree of  
gray-scale can be used to determine bottom hardness. See page 33 for more  
details on this feature.  
To change the Whiteline Setting:  
1. Highlight the ‘Chart’ tab on the Setup Menu.  
2. Highlight the ‘Whiteline’ selection field and press ENTER.  
3. Choose ‘On’ or ‘Off’ and press ENTER to accept the selection.  
Fish Symbols in Dual Frequency Mode  
Scroll Speed  
You can adjust the speed that the chart scrolls from right to left by  
using the ‘Scroll Speed’ selection field. If you are sitting still or the chart is  
moving too fast, slowing the scroll rate can be beneficial.  
To adjust the Scroll Speed:  
1. Highlight the ‘Chart’ tab on the Setup Menu.  
2. Highlight the ‘Scroll Speed’ selection field and press ENTER.  
3. Choose ‘Fast,’ ‘Medium,’ ‘Slow’ or ‘Pause,’ then press ENTER to accept  
Whiteline Selections  
the selection.  
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Scale  
The depth ‘Scale’ is displayed vertically along the right side of the chart.  
The depth ‘Scale’ can be configured to display in four different modes: as an  
‘Overlay,’ in the ‘Corners,’ as a ‘Basic’ Scale, or with ‘No Scale.’  
Unit Operation  
To change the Scale Setting:  
Setup Menu: Chart/Tools Tabs  
1. Highlight the ‘Chart’ tab on the Setup Menu.  
2. Highlight the ‘Scale’ selection field and press ENTER.  
3. Choose ‘Overlay,’ ‘Corners,’ ‘Basic’ or ‘No Scale,’ then press ENTER to  
accept the selection.  
Tools Tab  
The ‘Tools’ tab contains the ‘Depth Line,’ ‘Flasher,’ ‘Simulator’ and  
‘Noise Reject’ tools. The ‘Depth Line’ tool is used to quickly identify a set  
depth or to measure the depth of underwater objects. The ‘Noise Reject’ and  
‘Flasher’ tools are used to enhance the chart and help in identifying and  
providing information about an underwater return. The ‘Simulator’ tool  
is used to enhance the simulator mode by allowing you to customize the  
simulated transducer selection. To access the ‘Tools’ tab, place the highlight  
over it using the arrow keys.  
Scale — ‘Overlay’  
Scale — ‘Corners’  
Depth Line  
When the ‘Depth Line’ tool is activated, a Depth Line selection is added  
to the Adjustment Bar.  
To activate the Depth Line:  
1. Highlight the ‘Tools’ tab on the Setup Menu.  
2. Highlight the ‘Depth Line’ selection field and press ENTER.  
3. Select ‘On’ and press ENTER.  
Scale — ‘No Scale’  
Scale — ‘Basic’  
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To change the Depth Line Setting:  
1. Place the highlight over the ‘Depth Line’ selection on the Adjustment Bar.  
Unit Operation  
2. Use the UP or DOWN Arrow to change the setting, press ENTER to  
accept the change.  
Flasher  
Setup Menu: Tools Tab  
With the ‘Flasher’ tool active, a graphic Flasher representation will be  
displayed on the far right side of the chart. This graphic Flasher displays  
structure and bottom returns much the same as a true Flasher. You may  
find this feature particularly useful when using ‘Fish Symbols.’  
To Turn the Graphic Flasher on and off:  
1. Highlight the ‘Tools’ tab on the Setup Menu.  
2. Highlight the ‘Flasher’ selection field and press ENTER.  
3. Select ‘On’ or ‘Off’ and press ENTER to accept the selection.  
Simulator  
Depth Line Activated  
The ‘Simulator’ tool allows the unit to simulate the use of four different  
transducer configurations: ‘Depth Only’, ‘Temp’, ‘Speed’, or ‘Temp and  
Speed’. These choices allow the user to view more accurate depictions of  
actual unit operation. For details on using the simulator, see page 35.  
Noise Reject  
The ‘Noise Reject’ tool helps filter unwanted noise from the chart. The  
‘Noise Reject’ tool can be turned ‘Off,’ set for ‘Auto’ (automatic) adjustment  
or set for ‘Manual’ adjustment.  
Remember when setting the Noise Reject tool, the higher the noise rejection  
setting,themorelikelytheunitistonotshowfishorstructure.  
Graphic Flasher Activated  
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Noise Reject (continued)  
To change the Noise Reject Setting:  
Unit Operation  
1. Highlight the ‘Tools’ tab on the Setup Menu.  
2. Highlight the ‘Noise Reject’ selection field and press ENTER.  
3. Choose ‘Off,’ ‘Auto,’ or ‘Manual’ and press ENTER.  
Setup Menu: Tools/Numbers Tabs  
To manually adjust the Noise Reject Setting:  
1. Select ‘Manual’ in the ‘Noise Reject’ field of the ‘Tools’ tab, then press  
ENTER. A slider will appear below the ‘Noise Reject’ selection field.  
2. Use the Up or Down ARROW key to highlight the slider, then press  
ENTER.  
3. Use the Left or Right ARROW key to manually adjust the Noise Reject  
to the desired setting, then press ENTER.  
Numbers Tab  
The ‘Numbrs’ (Numbers) tab allows you to choose whether you would  
like to see normal or large numbers on the chart. You can also configure  
the unit to display ‘Battery Voltage,’ (water) ‘Temperature,’ and ‘Speed’ Over  
Water if the unit is equipped with capable sensors. You can also set up how  
the unit finds the digital ‘Depth Number.’ To access the ‘Numbrs’ tab, place  
the highlight over it using the arrow keys.  
Noise Reject Manual Adjustment Slider  
Number Size  
This setting determines the size of the numbers displayed in the  
‘Depth,’ ‘Temperature,’ ‘Battery Voltage’ and ‘Speed’ fields on the chart.  
To select Normal or Large Numbers:  
1. Highlight the ‘Numbrs’ tab on the Setup Menu.  
Normal Numbers  
Large Numbers  
2. Highlight the ‘Number Size’ selection field and press ENTER.  
3. Choose ‘Normal’ or ‘Large’ and press ENTER to accept the selection.  
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Battery Voltage  
The Fishfinder 160 Blue can display the current battery voltage on  
the chart.  
Unit Operation  
To show or hide the Battery Voltage display field:  
1. Highlight the ‘Numbrs’ tab on the Setup Menu.  
Setup Menu: Numbers Tab  
2. Highlight the ‘Battery Voltage’ selection field and press ENTER.  
3. Choose ‘Show’ or ‘Hide’ and press ENTER to accept the selection.  
Temperature  
The Fishfinder 160 Blue can display the water temperature when  
equipped with a temperature-sensing transducer. The unit has the ability  
to automatically sense when a temperature-capable transducer is connected.  
The temperature field can be shown or hidden, regardless of the transducer  
installed.  
To set the Temperature display field:  
Battery Voltage Selections  
1. Highlight the ‘Numbrs’ tab on the Setup Menu.  
2. Highlight the ‘Temperature’ selection field and press ENTER.  
3. Choose Auto,’ ‘Show’ or ‘Hide,’ then press ENTER to accept the  
selection.  
Temperature Display Selections  
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Speed  
The Fishfinder 160 Blue can display the boats Speed’ Over Water  
when equipped with a speed sensor. When set to ‘Auto,’ the unit will  
automatically sense when a capable sensor is connected and display the  
boats speed.  
Unit Operation  
Setup Menu: Numbers Tab  
To set the Speed display field:  
1. Highlight the ‘Numbrs’ tab on the Setup Menu.  
2. Highlight the ‘Speed’ selection field and press ENTER.  
3. Choose Auto,’ ‘Show’ or ‘Hide,’ then press ENTER to accept the  
selection.  
Depth Number  
The ‘Depth Number’ setting refers to how the unit finds the digital  
depth number that is displayed in the upper left corner of the screen.  
When set to ‘Auto,’ the unit will show the most accurate digital depth  
possible. However, this may cause the chart to update slower as the unit  
calculates the ‘Auto’ depth. When set to ‘From Chart’ (default), the unit  
finds the digital depth from the same image you see on the chart. The ‘From  
Chart’ setting allows the chart to update faster than when the unit is set to  
‘Auto’ and is recommended when using the unit in deep water.  
Speed Display Selections  
NOTE:In‘FromChart’mode,theFishfinder160Bluemay  
not be able to get the digital Depth Number if the bottom  
is not visible on the chart. Adjust the Depth Range on the  
Adjustment Bar until the bottom is visible, or change the  
setting to Auto’ to get the digital Depth Number.  
F
Depth Number Selections  
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To change the Depth Number Setting:  
1. Highlight the ‘Numbrs’ tab on the Setup Menu.  
2. Highlight the ‘Depth Number’ selection field and press ENTER.  
Unit Operation  
3. Choose ’Auto’ or ‘From Chart,’ then press ENTER to accept the  
selection.  
Setup Menu: Alarms Tab  
Alarms Tab  
The ‘Alarms’ tab allows you to activate and configure the four alarms  
available in the Fishfinder 160 Blue. To access the ‘Alarms’ tab, place the  
highlight over it using the arrow keys. See page 37 for alarm icons and  
messages.  
Fish Alarm  
The ‘Fish Alarm’ can be configured to sound by fish size. There are  
four different alarm selections: ‘Off,’ ‘Small, Medium and Large,’ ‘Medium  
and Large,’ or ‘Large.’ The ‘Fish Alarm’ will sound with or without the ‘Fish  
Symbols’ activated on the Chart Tab of the Setup Menu.  
To set a Fish Alarm:  
1. Highlight the Alarms’ tab on the Setup Menu.  
2. Highlight the ‘Fish Alarm’ selection field and press ENTER.  
3. Choose the desired setting, then press ENTER to accept the selection.  
Fish Alarm Selections  
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Shallow Water  
The ‘Shallow Water’ Alarm can be set to sound a warning at a depth  
determined by the user. The alarm must be activated before the unit will  
sound a warning.  
Unit Operation  
To activate/deactivate the Shallow Water Alarm:  
1. Highlight the Alarms’ tab on the Setup Menu.  
Setup Menu: Alarms Tab  
2. Highlight the ‘Shallow Water’ checkbox.  
3. Pressing ENTER will insert or remove a check mark in the checkbox.  
To set the Shallow Water Alarm depth:  
1. Highlight the ‘Shallow Water’ depth field and press ENTER.  
2. Use the Arrow Keys to input the desired depth, then press ENTER to  
accept the setting.  
Deep Water  
The ‘Deep Water’ Alarm can be set to sound a warning at a depth  
determined by the user. The alarm must be activated before the unit will  
sound a warning.  
Shallow Water Alarm  
To activate/deactivate the Deep Water Alarm:  
1. Highlight the Alarm’ tab on the Setup Menu.  
2. Highlight the ‘Deep Water’ checkbox.  
3. Pressing ENTER will insert or remove a check mark in the checkbox.  
To set the Deep Water Alarm depth:  
1. Highlight the ‘Deep Water’ depth field and press ENTER.  
2. Use the Arrow Keys to input the desired depth, then press ENTER to  
Deep Water Alarm  
accept the setting.  
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Battery Voltage  
When activated, the ‘Battery Voltage’ Alarm will warn you when the  
battery voltage reaches a user determined state of discharge.  
Unit Operation  
To activate/deactivate the Battery Voltage Alarm:  
1. Highlight the Alarm’ tab on the Setup Menu.  
Setup Menu: Alarms/System Tabs  
2. Highlight the ‘Battery Voltage’ checkbox.  
3. Pressing ENTER will insert or remove a check mark in the checkbox.  
To set the Battery Voltage Alarm:  
1. Highlight the ‘Battery Voltage’ field and press ENTER.  
2. Use the Arrow Keys to input the desired voltage, then press ENTER to  
accept the setting.  
System Tab  
The ‘System’ tab contains the ‘Contrast,’ ‘Beeper,’ ‘NMEA Output’ and  
‘Language’ setups. To access the ‘System’ tab, use the arrow keys to  
highlight it.  
Battery Voltage Alarm  
Contrast  
The display ‘Contrast’ may need to be adjusted to compensate for light  
levels or viewing angles.  
To adjust the Contrast:  
1. Highlight the ‘System’ tab on the Setup Menu.  
2. Highlight the ‘Contrast’ Adjustment field and press ENTER.  
3. Using the Right/Left ARROW keys, move the slider Right to darken the  
screen, or Left to lighten the screen. When finished, press ENTER to  
accept the setting.  
Contrast Adjustment  
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Beeper  
The ‘Beeper’ field contains three settings: ‘Off,’ ‘Alarms Only,’ and ‘Key  
& Alarm.’  
Unit Operation  
To change the Beeper Setting:  
1. Highlight the ‘System’ tab on the Setup Menu.  
Setup Menu: System Tab  
2. Highlight the ‘Beeper’ field and press ENTER.  
3. Choose ‘Off,’ ‘Alarms Only,’ or ‘Key & Alarm,’ then press ENTER to  
accept the setting.  
NMEA Output  
The Fishfinder 160 Blue has the ability to output information about  
Depth, Speed, and Water Temp for display on another NMEA-compatible  
device.  
To activate/deactivate the NMEA Output:  
1. Highlight the ‘System’ tab on the Setup Menu.  
2. Highlight the ‘NMEA Output’ field and press ENTER.  
3. Choose ‘Off’ or ‘On,’ then press ENTER to accept the setting.  
Beeper Selections  
Language  
The Fishfinder 160 Blue can display chart information in several differ-  
ent languages.  
To select a Language:  
1. Highlight the ‘System’ tab on the Setup Menu.  
2. Highlight the ‘Language’ field and press ENTER.  
3. Use the Arrow Keys to select the desired language from the list and  
press ENTER to accept the setting.  
Language Selections  
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Calibrations Tab  
The ‘Calibrt’ tab contains the ‘Keel Offset’ and ‘Water Type’ setups, and  
a ‘Calibrate Speed’ function for use when a speed sensor is installed.  
Unit Operation  
Keel Offset  
The ‘Keel Offset’ field allows the user to offset the depth reading for a  
keel or for the draw on a larger vessel. This setting should not need to be  
changed on smaller recreational boats.  
Setup Menu: Calibrations Tab  
To set a Keel Offset:  
1. Highlight the ‘Calibrt’ tab on the Setup Menu.  
2. Highlight the ‘Keel Offset’ field and press ENTER.  
3. Use the Arrow Keys enter a new offset, then press ENTER to accept.  
Water Type  
Since sound waves travel through fresh and salt water at different rates,  
it is necessary to select the ‘Water Type’ to ensure accurate depth readings.  
To change the Water Type:  
1. Highlight the ‘Calibrt’ tab on the Setup Menu.  
2. Highlight the ‘Water Type’ selection field and press ENTER.  
3. Choose ‘Fresh’ or ‘Salt,’ then press ENTER to accept the selection.  
Calibrate Speed  
The ‘Calibrate Speed’ field will be enabled when a speed sensor is  
installed or when you are in simulator mode. This allows you to calibrate  
the Fishfinder speed to your boats speedometer or to your GPS speed.  
To calibrate the Speed:  
1. Highlight the ‘Calibrt’ tab on the Setup Menu.  
2. Highlight the ‘Calibrate Speed’ button and press ENTER.  
3. Run your boat, noting your top speed. Stop the boat and press ENTER.  
Transducer at Surface  
Enter (+) positive number to show  
depth from bottom of keel  
Transducer at Bottom of Keel  
Enter (-) negative number to show  
depth from surface  
4. With the speed field highlighted, press ENTER and input your top  
speed. Highlight ‘OK’ and press ENTER to finish the calibration.  
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Units Tab  
The ‘Units’ tab contains settings for ‘Depth,’ ‘Temperature’ and ‘Speed.’  
To access the ‘Units’ tab, use the arrow keys to highlight it.  
Unit Operation  
Depth  
The ‘Depth’ field can be configured to display in Feet (ft), Meters (m)  
or Fathoms (fa).  
Setup Menu: Units Tab  
To select a Depth Unit:  
1. Highlight the ‘Units’ tab on the Setup Menu.  
2. Highlight the ‘Depth’ field and press ENTER.  
3. Select ‘Feet,’ ‘Meters’ or ‘Fathoms,’ then press ENTER to accept the  
new setting.  
Temperature  
If equipped with a temperature–capable transducer or a separate  
temperature sensor, the unit can display water temperature in Fahrenheit  
(°F) or Celsius (°C).  
To Select a Temperature Unit:  
1. Highlight the ‘Units’ tab on the Setup Menu.  
Depth Selections  
Temperature  
Selections  
2. Highlight the ‘Temperature’ field and press ENTER.  
3. Select ‘Fahrenheit’ or ‘Celsius,’ then press ENTER to accept the setting.  
Speed  
If equipped with a speed sensor, the unit can display the boats Speed’  
Over Water. The unit can be configured to display ‘Miles-Per-Hour’ (mh),  
‘Kilometers-Per-Hour’ (kh), or ‘Nautical Miles-Per-Hour’ (kt).  
To select a Speed Unit:  
1 Highlight the ‘Units’ tab on the Setup Menu.  
2. Highlight the ‘Speed’ field and press ENTER.  
Speed Selections  
3. Select ‘Miles/hr,’ ‘Kilom/hr’ or ‘Knots,’ then press ENTER to accept the  
new setting.  
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Memory Tab  
The ‘Memory’ tab contains the settings for unit memory and allows you  
to reset the unit to the factory settings and review the software version. To  
access the ‘Memory’ tab, use the arrow keys to highlight it.  
Unit Operation  
Remember  
Setup Menu: Memory Tab  
The Fishfinder 160 Blue can be set to remember its settings each time  
you power it on. You can set it to remember the settings in the Setup  
Menu (‘Setup Only’) or the units settings in both the Setup Menu and the  
Adjustment Bar (‘All’).  
To select a Memory Setting:  
1. Highlight the ‘Memory’ tab on the Setup Menu.  
2. Highlight the ‘Remember’ field and press ENTER.  
3. Choose All’ or ‘Setup Only,’ then press ENTER to accept the selection.  
Factory Setup  
To restore the Factory Settings:  
Remember Selections  
Restore  
Factory Settings  
1. Highlight the ‘Memory’ tab on the Setup Menu.  
2. Highlight the ‘Factory’ Setup button and press ENTER.  
3. Choose ‘OK’ to reset the unit or ‘Cancel’ to abort.  
Software Version  
The ‘Software Version’ Button will report information about the current  
software version in the unit and display the Unit ID Number.  
To activate the Software Version Window:  
1. Highlight the ‘Memory’ tab on the Setup Menu.  
2. Highlight the ‘Software Version’ button and press ENTER.  
3. Press ENTER to close the information window.  
Software Version Information  
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Understanding Sonar  
If you are unfamiliar with sonar, or need help determining what is  
displayed on the chart, then this section may be for you. This section  
is intended to help the novice user gain some understanding of how the  
Fishfinder 160 Blue operates and how it can help improve their fishing  
productivity.  
On the Water  
Unit Operation and the Chart  
To understand what the unit is displaying, it is important to have a  
general knowledge of how the unit works and how it determines what to  
display. Briefly described, the unit operates by transmitting sound waves  
toward the bottom of a lake, stream or seabed in a cone–shaped pattern.  
When a transmitted sound wave strikes an underwater object such as the  
bottom, a piece of structure, or a fish, sound is reflected back to the  
transducer. The transducer collects the reflected sound waves and sends the  
data to the unit to be processed and displayed on the chart. Underwater  
data is displayed on the chart in the order that the reflected sound waves  
are received. The diagram in the sidebar demonstrates this, showing an  
underwater scene as it would be displayed on the chart. Generally speaking,  
if the only thing between the transducer and a flat bottom is water, the  
first strong return will come from the bottom directly below the transducer,  
this return will set the bottom level. Weaker secondary returns provide  
the detailed data. Stronger returns will display in darker colors, with black  
being the strongest return. In Examples 1 and 2 (page 32), you can see  
that the branches and the fish were the strongest secondary returns and are  
indicated in black on the display.  
1
2
3
2
1
3
This fish is currently in a Dead Zone and is not detected  
by the sonar. The fish is in the coverage area of the  
transducer, but remember the first strong return sets the  
bottom level. The fish will never be detected since the  
bottom level will never be set below the fish. The fish on  
the right side of the display (shown in light grey) will be  
detected and displayed when the transducer cone passes  
over the fish.  
That is a brief description of how your Fishfinder operates. Lets take a  
look at how this data can help you to improve your fishing.  
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Transducer Coverage  
The area covered by the transmitted sound waves is determined by the  
cone angle of the transducer and the water depth. The 50kHz frequency  
provides a 40° cone angle, with a coverage width that is approximately 2/3  
of the water depth. As shown in the sidebar, the 40° cone angle (50kHz  
frequency) approximately covers the area of a 20 foot diameter circle at a  
30 foot depth. The 200kHz frequency provides a 10° cone angle, with a  
coverage width that is approximately 2/10 of the water depth. As shown,  
the 10° cone angle (200kHz frequency) approximately covers the area of a  
6 foot diameter circle at a 30 foot depth.  
On the Water  
Transducer Coverage  
When using the Fishfinder 160 Blue in ‘Dual’ frequency mode, the unit  
transmits both 50kHz and 200kHz signals at the same time. The ‘Dual’  
frequency capability of the Fishfinder 160 Blue allows the user to have  
a large coverage area and still retain good bottom resolution. When in  
‘Dual’ frequency mode the unit uses the 200kHz to display detailed bottom  
information, keeping “Dead Zones” to a minimum, and the 50kHz signal  
for the large coverage area.  
200kHz - 10˚ Cone Angle  
72" coverage at 30'  
50kHz - 40˚ Cone Angle  
20' coverage at 30'  
Fish returns from the 50kHz and 200kHz beams will appear differently  
on the display. The 50kHz beam tends to show longer fish returns than  
the 200kHz beam. The examples below show simulated fish returns at  
50 and 200 kHz.  
50kHz  
200kHz  
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Understanding the Chart  
It is important to understand that the unit does not display a 3-D  
representation of the underwater environment. The unit can display mul-  
tiple things at the same time, but cannot determine from where the return  
originated. It can only determine when the return was received.  
On the Water  
Understanding the Chart  
Examples 1 and 2 provide a look at the underwater world from a top  
view, and illustrate how these views would be displayed on the chart. On  
both charts it appears the fish and tree are side by side as shown in Example  
1. However, when we look at Example 2, we see that the fish can be several  
feet from the tree. It is important to remember that the Fishfinder cannot  
determine where in the coverage area the tree or fish are, only that the  
returns were received at the indcated depths in the same time frame.  
RememberthattheFishfinderdisplaysa2-Dpicture  
oftheunderwaterenvironment.Thefishandtree  
could be located anywhere in the coverage area  
produced by the sonar cone at the object’s indicated  
depth.  
Branches  
Fish  
Branches  
Fish  
Enlarged  
Transducer  
View  
Enlarged  
Transducer  
View  
Example 1.  
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Example 2.  
32  
Whiteline  
The Fishfinder 160 Blue can help you to determine if the bottom is  
hard or soft. When the sonar soundwaves are reflected back by the bottom,  
a hard bottom will return a stronger signal than a soft bottom. The stronger  
the bottom return, the wider the bottom layer is displayed. The unit uses  
the Whiteline function to make this bottom layer information easier to  
distinguish.  
On the Water  
Understanding the Chart  
When viewing the display without Whiteline active, the bottom return  
is black. While you can make some determination of the bottom type,  
the black return makes this more difficult. With the Whiteline active, the  
bottom return appears layered in shades of gray and black, which makes  
determining the bottom type easier and more reliable. Example 3 shows  
the bottom return with and without the Whiteline activated.  
Whiteline can also help you to determine the type of  
bottom structure that is displayed on the chart. By  
determining the hardness of the structure you can  
make a better informed decision as to the type of  
structure.  
Soft  
Bottom  
Hard  
Bottom  
Whiteline  
Whiteline Activated  
Whiteline Turned Off  
Structure is hard, probably a  
rock or stump  
Structure is soft, probably a  
mud pile  
Example 3.  
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Thermoclines  
A rough definition of a thermocline is a break in water where the  
water temperature changes at a faster rate than the water above it. The  
thermocline is usually displayed as a gray level, as shown below.  
On the Water  
One of the unique features offered by GARMIN is See-Thru technology.  
A benefit of See-Thru technology is that it allows the Fishfinder 160 Blue  
to see fish inside thermoclines.  
Understanding the Chart  
Thermocline  
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Simulator Mode  
The Fishfinder 160 Blue comes with a built-in simulator. While in  
simulator mode, the unit will display a random bottom scene, and the  
Fishfinder 160 Blue can be controlled just as if it were on the water. Using  
simulator mode allows the user to practice and learn the operation of the  
unit without having to be on the water.  
On the Water  
Simulator Mode  
If the Fishfinder 160 Blue is turned on without a transducer connected,  
the unit will start in simulator mode. Also the unit can be switched into  
simulator mode by selecting one of the simulated transducer options from  
the ‘Simulator Selection’ field as described below. The unit will indicate that  
it is running in simulator mode by displaying a message across the bottom  
of the screen. The message will be replaced by the “S” simulator-mode icon  
in the lower left corner of the screen.  
The unit can be configured to act as if a variety of transducers are  
installed while in the simulator mode.  
Simulator Message and Icon  
To Select a Simulated Transducer:  
1. Press the SETUP button on the face of the unit.  
2. Using the Arrow keys, highlight the ‘Tools’ tab then the ‘Simulator’  
selection field.  
3. Press ENTER. Choose the desired transducer from the list.  
4. Press ENTER to accept the transducer selection.  
To exit the Simulator, select ‘Off’ from the list or transducer selections,  
or turn the unit off.  
Simulator Transducer Selections  
35  
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Physical  
Case: Fully gasketed, high-impact plastic alloy  
AppendixA
Display: 3.3” x 3.3” (8.3 x 8.3 cm), 4.6” diagonal (11.7 cm),  
160 H x 160 W pixels, FSTN LCD with incandescent backlighting  
Size: 4.93” H x 6.3” W x 3.0” D (12.5 x 16 x 7.6 cm)  
Weight: 22 oz.  
Specifications  
Temperature Range: +5° to 158°F (-15°C to 70°C)  
Waterproof: IEC 529, level IPX-7 (submerged to 1 meter for 30 minutes)  
Power  
Input: 10 to 18 VDC with High Voltage Protection  
Usage: 12 watts maximum  
Nominal: 12 VDC @ 0.8 amps  
Performance  
Sonar Power Output: 500 watts (RMS), 4000 watts (peak to peak)  
Frequency: 200/50 kHz (10°/40°)  
Depth 1500 foot max depth*  
NMEA  
Support: NMEA 0183 Versions 2.0 - 2.3  
Output Sentences: DBT, DPT, NTW, VHW  
* Depth capability is dependent on water salinity, bottom type and other water  
conditions.  
Specifications subject to change without notice.  
36  
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Alarm Messages and Icons  
The Fishfinder 160 Blue displays a message when an alarm is tripped.  
To clear the message, press the ENTER key. If the ENTER key is not  
pressed, the unit will automatically remove most messages after 10 seconds  
and display a reminder icon in the lower left corner of the chart until the  
alarm is no longer valid.  
AppendixB
Messages and Alarms  
Unit Needs Repair  
Unit Needs Repair  
Battery Voltage Low  
Deep Water Alarm  
Shallow Water Alarm  
Supply Voltage Low  
Supply Voltage High  
Memory Deleted  
Increase Battery Voltage  
Alarm Setting  
Fish Alarm  
37  
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D
Deep Water Alarm.............................................................................24  
Depth Line ...................................................................................18-19  
Depth Number.............................................................................22-23  
Depth Range......................................................................................12  
Depth Scale .......................................................................................18  
Depth Units.......................................................................................28  
Display......................................................................................... vi, 11  
Display Installation...........................................................................7-8  
AppendixC
Index  
A
Accessories.........................................................................................iii  
Adjustment Bar ........................................................................... 12-14  
Alarm Messages.................................................................................37  
Alarms Tab.................................................................................. 23-25  
Arrow Keys........................................................................................10  
E
Enter Key ..........................................................................................10  
F
Factory Setup....................................................................................29  
Fish Alarm ........................................................................................23  
Fish Symbols................................................................................16-17  
Flasher ..............................................................................................19  
Flush Mounting the Display ................................................................8  
Frequency ..............................................................................15-16, 31  
B
Backlight ...........................................................................................10  
Battery...............................................................................................37  
Battery Voltage Alarm........................................................................25  
Battery Voltage Display......................................................................21  
Beeper...............................................................................................26  
Bottom Structure.................................................................... vi, 32-33  
G
Gain Adjustment ...............................................................................14  
Graphic Flasher.................................................................................19  
C
I
Calibrate Speed .................................................................................27  
Calibrations Tab ................................................................................27  
Chart Tab .................................................................................... 15-18  
Contrast ............................................................................................25  
Customer Service .................................................................................i  
In-Hull Installation..............................................................................3  
Installing the Display........................................................................7-8  
Installing the Speed Sensor..................................................................4  
Installing the Transducer ..................................................................2-4  
Installing the Wiring Harness ...........................................................5-6  
38  
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K
Keel Offset.........................................................................................27  
Keypad..............................................................................................10  
AppendixC
L
Language...........................................................................................26  
Limited Warranty ................................................................................ii  
Index  
M
S
Memory Tab......................................................................................29  
Messages ...........................................................................................37  
Mounting the Display...................................................................... 7-8  
Mounting the Speed Sensor.................................................................4  
Mounting the Transducer ................................................................ 2-4  
Scale.................................................................................................18  
Scroll Speed .....................................................................................17  
Setup Key.........................................................................................10  
Setup Menu.................................................................................15-29  
Shallow Water Alarm........................................................................24  
Simulator ...................................................................................19, 35  
Software Version...............................................................................29  
Specifications ...................................................................................36  
Speed Calibration.............................................................................27  
Speed Display...................................................................................22  
Speed Sensor Installation....................................................................4  
Speed Units......................................................................................28  
Surface Mounting the Display.............................................................7  
System Tab..................................................................................25-26  
N
NMEA Output...................................................................................26  
Noise Reject ......................................................................................19  
Number Size .....................................................................................20  
Numbers Tab............................................................................... 20-23  
O
Operation..........................................................................................30  
P
Packaging...........................................................................................iii  
Power Key.........................................................................................10  
Product Registration.............................................................................i  
T
Table of Contents ........................................................................... iv-v  
Temperature Display ........................................................................21  
Temperature Units............................................................................28  
Testing the Installation .......................................................................9  
Thermocline................................................................................ vi, 34  
R
Range Adjustment .............................................................................12  
Remember Settings............................................................................29  
Restore Factory Settings ....................................................................29  
39  
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AppendixC
Index  
T
Tools Tab.....................................................................................18-20  
Transducers..................................................................................1, 31  
Transom Mount Installation ...............................................................2  
U
Understanding Sonar........................................................................30  
Understanding the Chart.............................................................32-34  
Units Tab..........................................................................................28  
V
View Adjustment..............................................................................13  
W
Warranty ............................................................................................ii  
Water Depth................................................................................ vi, 28  
Water Temperature................................................................ vi, 21, 28  
Water Type .......................................................................................27  
Whiteline ...................................................................................17, 33  
Wiring Harness Installation.............................................................5-6  
Z
Zoom Adjustment ............................................................................13  
40  
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© 2001 GARMIN Corporation  
GARMIN International, Inc.  
1200 East 151st Street, Olathe, Kansas 66062, U.S.A.  
GARMIN (Europe) Ltd.  
Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9AQ, U.K.  
GARMIN Corporation  
No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan  
www.garmin.com  
Part Number 190-00199-00 Rev. B  
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