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Garmin Fishfinder 160C


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Garmin Fishfinder 160C Declaration Of Conformity Rev. A, Jun, 2005

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Garmin Fishfinder 160CGarmin Fishfinder 160C - Fishfinder - portable - included transducer - dual-beam
The Fishfinder 160C is a rugged, affordable color sounder for recreational anglers who fish primarily in freshwater lakes. Fish returns and bottom information are clearly shown on the unit's bright, sunlight-readable color display, making it easier for you to scope out your fishing grounds. Fishfinder 160C's included dual-beam transducer provides excellent shallow-water performance, and the wide viewing angle lets you see fish even off the sides of the boat. The 160C also offers Ultrascr... Read more


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Comments to date: 2. Page 1 of 1. Average Rating:
fmho 5:27pm on Wednesday, November 3rd, 2010 
NewEgg as usual has excellent shipping !!!Actually received the product 1 day early!! excellent fish/depth finder!
WillDMitchell 9:06am on Saturday, September 25th, 2010 
Good instructions, solid construction and colorful screen. A good buy for the low price. Easy To Read","Easy To Set Up","Simple Controls".

Comments posted on are solely the views and opinions of the people posting them and do not necessarily reflect the views or opinions of us.





Installing the Fishfinder 160C..4


Introduction > Product Registration and Caring for the Fishfinder 160C

Product Registration

Help us better support you by completing our online registration today! Connect to our Web site at Use this area to record the serial number (8-digit number located on the back of the Fishfinder 160C) in case your Fishfinder 160C needs service. Keep the original sales receipt, or a photocopy, in a safe place. Serial Number: ___ ___ ___ ___ ___ ___ ___ __
Caring for the Fishfinder 160C

Caring for the Screen

The Fishfinder 160C's case is constructed of high-quality materials and does not require user maintenance except cleaning.
The Fishfinder 160C's lens is coated with a special anti-reflective coating that is sensitive to skin oils, waxes and abbrasive cleaners. Cleaners containing amonia, alcohol, abrasives, or anti-grease detergents will harm the antireflective coating. It is important to clean the lens using an eyeglass lens cleaner (that is specified as safe for anti-reflective coatings) and a clean, lintfree cloth.

Contact Garmin

Contact Garmin if you have any questions while using your Fishfinder 160C. In the USA contact Garmin Product Support by phone: (913) 397-8200 or (800) 800-1020, MondayFriday, 8 AM5 PM Central Time; or go to, and click Product Support. In Europe, contact Garmin (Europe) Ltd. at +44 (0) 870.8501241 (outside the UK) or (within the UK).

Cleaning the Case

Clean the units outer casing (except for the screen) using a cloth dampened with a mild detergent solution, and then wipe dry. Avoid chemical cleaners and solvents that may damage plastic components.

Water Immersion

The Fishfinder 160C is waterproof to IEC Standard 60529 IPX7. It can withstand immersion in 1 meter of water for 30 minutes. Prolonged submersion can cause damage to the unit. After submersion, be certain to wipe and air dry the unit before reuse.

Tell Us What You Think

Tell us how you like this manual! Fill out the Product Documentation Survey. Go to, and click Product Documentation Survey.

Do not store the Fishfinder 160C where prolonged exposure to temperature extremes may occur (such as in the trunk of a car) because permanent damage may result.
Introduction > Warnings and Important Information


WARNING: This product, its packaging, and its components contain chemicals known to the State of California to cause cancer, birth defects, or reproductive harm. This Notice is being provided in accordance with Californias Proposition 65. If you have any questions or would like additional information, please refer to our Web site at
Hg - lampS inside this product contain mercury and must be recycled or disposed of according to local, state, or federal laws.

Important Information

The California Electronic Waste Recycling Act of 2003 requires the recycling of certain electronics. For more information on the applicability to this product, see
For more information go to:
Getting Started > Understanding the Fishfinder and Sonar
Getting Started Understanding the Fishfinder and Sonar
The Fishfinder 160C is a fully automatic, color sonar unit that allows you to go out on the water and find fish without having to configure a lot of settings. However, you can customize each setting as you prefer. If you have used a Fishfinder before, you might already know how to interpret the sonar information on the screen, so you can skip this section. If you have not used a Fishfinder before, you might want to learn a bit about sonar: what it is, how it works, and what you might see on the Fishfinder 160C screen. This manual provides a general understanding of those things that you need to know about sonar that can help you interpret the screen and find the fish.
These sound waves reflect off of any object that they hit, and then the waves travel back up to the transducer. These objects could be fish, branches, the bottom, or any other object that has density that is different from the water. The transducer receives the sound wave information, and then sends the information to the Fishfinder. The Fishfinder shows the information on the screen for you to see and interpret. The type of transducer and settings that you choose determine how the information appears on the screen.
Understanding the Fishfinder Screen

Experimentation and experience are the keys to successfully interpreting your Fishfinder screen. We recommend that you take your Fishfinder out on familiar water, and spend time learning to interpret what you see on the Fishfinder 160C screen. Think of the Fishfinder screen as if you took a picture from the side of an aquarium in your home. You can see how deep a fish is in the water (how close it is to the top or bottom), but you cannot tell where the fish is located horizontally in the water (whether it is near the front or the back of the aquarium). Remember this when you are trying to locate exactly where something is in the water. The strongest sonar returns appear on your screen as the most intense solid red. The weaker returns appear as less intense, less solid colors,with dark blue to black being the weakest.

Understanding Sonar

During installation, you connect your Fishfinder 160C to a transducer. The transducer uses sound to determine information about what is in the water beneath your boat. Then the transducer sends the information to your Fishfinder to be shown on the screen for you to view and interpret. The transducer sends sound waves down into the water in a cone shape, similar to a flashlight beam (covering a smaller circular area at the top and angling out to a larger circular area at the bottom).
The bottom of the water is always going to be the strongest signal, and therefore the bottom is the continuous, intense red line running across the bottom of the screen. The Fishfinder 160C includes the latest technology in interpreting bottom signals; it can see through fish, structures, and thermoclines (see page 3). Even so, large schools of fish or dense structures close to the bottom can affect water depth return readings. Along the top of the screen, you might see a grouping of intense colors. This area is surface clutter, which can be caused by waves or any other sonar interference at the surface of the water. Too much surface clutter can obscure your view of fish. You can turn down the Gain setting to reduce this surface clutter. Between the bottom and the surface clutter, you may see suspended targets. By default, the targets appear as arches.
Note: Suspended target returns might not always appear as perfect arches, due to the speed, fish orientation, or other conditions.

Using Dual Beam

A dual beam transducer can transmit a narrow or a wide beam. The water area covered by the transmitted sound waves is determined by the transducer beam width and the water depth. The narrow beam provides crisp detail of what is under your boat, and is very helpful if you are fishing in deeper water where the beam covers more area (for example, at a depth of 30 feet, the narrow beam covers the area of about a 7-foot circle).

Unit Installation

Choose a location that provides optimal viewing and allows easy access to the units keypad. Select a mounting surface strong enough to support the weight of the unit and protect it from excessive vibration or shock. DO NOT mount the bracket in a location where the unit is exposed to extreme temperature conditions. When installing the mounting bracket, be sure to allow room for the connection and routing of the power cable. Tool List (not included)drill, screwdriver (Phillips or standard), three #8 pan-head machine bolts with matching nuts and washers, and a 5/32" drill bit, OR three #8 pan head self-tapping screws, and a 1/16" drill bit. To mount the bracket assembly:
1. Using the swivel base as a template, mark the location of the three mounting holes. 2. If securing the base with machine bolts, drill three 5/32" holes at the locations you marked. If securing the base using selftapping screws, drill 1/16" starter holes at the locations you marked. Generally, starter holes should be no deeper than half the screw length. 3. Secure the swivel base with three bolts or screws. DO NOT OVERTIGHTEN. 4. Attach the swivel bracket and secure it with the short knob.

Mounting Holes

Swivel Base Short Knob
Swivel Bracket and Base Fishfinder 160C Owners Manual
Installing the Fishfinder 160C > Transducer Installation 1. Align the slot on the back of the unit with the long mounting knob and slide into place. It may be necessary to adjust the long knob to spread the bracket arms apart. (Turn counterclockwise to widen the bracket arms, clockwise to tighten.) 2. Adjust the unit angle and tighten the long mounting knob until snug. 3. Tilt the unit by loosening the long knob on the right side of the bracket assembly. 4. Rotate the entire bracket by twisting it left or right. (NOTE: You will hear clicks as you turn the bracket.) 5. Tighten all knobs when the viewing angle you want is obtained.
To install the unit on the mounting bracket:

Transducer Installation

Once youve installed the Fishfinder 160C unit, you must install the transducer for it to function. The included transducer can be installed on the transom (see page 7) or on the trolling motor (see page 9). To assemble the transducer:
1. Insert the rubber washer and plastic spacer in the transducer at the same time. DO NOT lubricate the rubber washer. 2. Route the cable toward the back and slide the transducer into the mounting bracket. 3. Place a 5 mm flat washer on the 10-32 x 1.75" screw and insert the screw through the mounting bracket, spacer, and rubber washer. 4. Place the remaining 5 mm flat washer on the exposed end, and install the 10-32 lock nut finger tight. The transducer is tightened further after installation on the boat.
Installing the Fishfinder 160C > Transducer Installation
Selecting a Transom Mount Location

For your sonar to operate properly, the transducer has to be located in clean (non-turbulent) water. The transducer should be mounted as near the center of the boat as possible. DO NOT cut the transducer lead, this will void your warranty and may degrade the sonars operation. DO NOT mount the transducer behind strakes, rivet lines, struts, fittings, water intake, discharge ports, eroding paint, or anything that creates air bubbles or causes the water to become turbulent. It is important that the transducer be as close to the center line as possible in calm, non-turbulent water for optimal performance. Avoid mounting the transducer in locations where the boat may be supported during launching, hauling, trailering, or storage. Mount the transducer away from the path of the prop on single drive boats. On twin drive boats, mount the transducer between the drives if possible. Do not mount the transducer directly in the path of the prop. The transducer can cause cavitation that may degrade the boats performance and damage the prop.
Do not mount the transducer behind strakes, rivet lines, struts, fittings, water intakes or discharge ports.
Mount the transducer parallel with the water line. Make sure the transducer is below water level when the boat is on plane at high speed. Apply marine sealant to all screw threads to prevent water from seeping into the transom.
Mounting the Transducer on a Transom
Drill pilot holes here. Level Vertical Align with transom bottom. Transducer should extend 1/8" below fiberglass hulls or 3/8" below aluminum hulls.
Tool List (not included)drill, 3/8" wrench or socket, 5/32" and 1/8" drill bits, masking tape, #2 Phillips screwdriver, marine sealant. To mount the transducer on a transom:
1. Position the transom mount at the selected location, making sure the transducer is parallel with the water line. Mark the center locations of each hole on the transom mount (see figures to the right). 2. Using the 5/32" bit, drill the pilot holes approximately 1"(25mm) deep at the marked locations. To avoid drilling the holes too deep wrap a piece of tape around the bit 1" from the point of the bit. 3. Apply marine sealant to the 5 x 30 mm screws. Attach the transducer to the transom using the 5 x 30 mm screws. Adjust the transducer to extend beyond the bottom of the transom approximately 1/8" (3 mm) on fiberglass hulls or 3/8" (10 mm) on aluminum hulls. Adjust the transducer to be aligned parallel with the water. 4. Tighten the 10-32 locking nut until it touches the mounting bracket, and then tighten 1/4 turn more (do not overtighten). Note: After you install the transducer on a transom, it is highly recommended you test the installation (see page 10)

Bottom of

Keep parallel with water line.
Mounting the Transducer on a Trolling Motor
1. Slide the large cable tie through the slot on the transducer mount with the ridges of the band facing up until equal lengths extend on both sides of the mount. (NOTE: For cold water, or heavy timber or debris areas, a metal 4-5" worm gear clamp is recommended.) 2. Position the mount gasket on the curved top of the transducer mount. 3. Place the transducer assembly against the motor body of the trolling motor, with the front of the transducer pointed away from the trolling motor propeller. 4. Wrap the two ends of the cable tie around the motor body. Place the pointed end of the cable tie through the fastener hole on the opposite end and pull it through until it is snug but not tight. (The cable tie clicks when you pull it.) 5. Position the transducer so that it is parallel with the bottom when in use, and make sure the gasket is aligned properly. Pull the cable tie end until tight. Trim off the excess, if necessary. Tighten the 10-32 locking nut until it touches the mounting bracket and then tighten 1/4 turn more. (Do not overtighten.)

To test the transom mount installation:
The Fishfinder 160C outputs NMEA data for: Water Depth, Water Speed and Water Temperature. To connect the NMEA output to a NMEA device:
Connect the Blue wire to the Data Input of the NMEA device.

To Transducer

(red) + 10-18 VDC
(black) - Ground (Power/Data)

Power 10-18 volts DC

To Unit

(blue) Port 1 Data OUT



(yellow) Alarm Low

Alarm Relay

100ma max coil current

Wiring Diagram

Black Red + Wiring to a Fuse Block Fishfinder 160C Owners Manual 11
Operating Instructions > The Keypad and Simulator Mode
Using the Fishfinder 160C
If you are turning on your Fishfinder 160C for the first time, use the following procedure. If you have already turned on your Fishfinder, and you are just familiarizing yourself with the basic functions, please go to Using the Keypad on this page. To start your Fishfinder for the first time:
1. Press and hold the Power/Backlight key until the Fishfinder powers on. If the Fishfinder fails to turn on, verify that the wiring adapter is properly connected in the back of the Fishfinder, the Red and Black wires are connected to the correct polarity, and that the 2-Amp fuse is installed and not blown. If the Fishfinder does not detect a transducer, it automatically enters Simulator mode.

The Keypad

The Arrow keys The up and down Arrow keys are used to select items on the Adjustment Bar and Setup menu. The left and right Arrow keys are used to quickly cycle through Adjustment Bar settings. The ENTER key The ENTER key opens items in the Adjustment Bar and Setup Menu. The MENU key The MENU key opens and closes the Adjustment Bar. The POWER key The POWER key turns the unit on or off and activates the backlight. Press and hold to turn the unit on or off. Press briefly and release to activate the backlight. To change the backlight level, press the POWER key repeatedly to cycle between off, user level, and high.

Simulator Mode

You can use Simulator mode to practice and learn the operation of the Fishfinder. If the Fishfinder does not detect a transducer, it automatically starts in Simulator mode. While in Simulator mode, the Fishfinder shows a bottom scene, and you can control the Fishfinder (except the Gain and Auto Gain options). If no keys are pressed for two minutes, the Fishfinder automatically resets to default settings while in Simulator mode. To exit Simulator mode, turn off the Fishfinder.

Operating Instructions > The Fishfinder 160C Display
The Fishfinder 160C Display
Water Depth The Depth Scale is shown from top to bottom along the right side. Messages and Alarm Icons appear along the bottom. Water Temperature The unit can show the water temperature at the transducer. Speed With a speed capable transducer, speed is shown in miles per hour, kilometers per hour, and knots. Distance With a speed capable transducer, distance is shown in miles, nautical miles, or kilometers. Battery Voltage You can choose to show the current battery voltage (seepage18). Fish (Suspended Targets) Suspended targets appear as arches or fish symbols (seepage16), and you can set an alert for when a target is detected

(Simulated display)

Thermocline and Structure Garmins See-Thru technology can show more than just the thermocline and structure, the unit finds targets in and below the thermocline, trees, brush, and deadfall.
Bottom Shape and Type Garmins Auto Gain system provides a clear graphic representation of the bottom type and its shape.
Operating Instructions > The Adjustment Bar

The Adjustment Bar

The Adjustment Bar allows quick access to the settings most commonly changed while using the unit. The Adjustment Bar settings are: Range, Gain, Scroll, Zoom, and View. Press the MENU key to view the current Adjustment Bar settings. Press MENU again to hide the window. The current adjustment option always appears in the upper left of the display. Press left or right on the Arrow keys to scroll through the available options. To immediately change the current adjustment option, press the up or down Arrow key. To review the available settings before making a change, press the ENTER key to activate the adjustment window.
1. Press MENU, use the up or down Arrow key. 2. Move the selection arrow to the option you want, and press ENTER. 3. Choose Setup for the main Setup Menu.
Sets the display depth range. The unit can automatically track the bottom, or be set to a user-specified range. Available settings are: Auto (default) or 5-900 ft.
To change a setting on the unit:
Controls the sensitivity of the units sonar 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. Available settings are: Auto (default) and 0-100%. The Auto setting level is controlled by the Auto Gain setting in the Setup menu.


Adjusts the rate that the graph scrolls from right to left. If you are sitting still or the graph is moving too fast, slowing or pausing the graph can be beneficial.
Operating Instructions > The Setup Menu
Selects a screen zoom scale. Available settings are: OFF (default), 2X, and 4X zoom.

The Setup Menu

The Setup menu contains the settings that should not need to be changed frequently.
1. Press the MENU key. 2. Using the up or down Arrow key, select Setup, and press the ENTER key. 1. 2. 3. 4.
To display the Setup menu:
View is only available when a Zoom scale other than Off is selected. This setting allows you to select a specific zoom area to view on the screen, or allows the unit to automatically select a zoomed viewing area based on the bottom. When adjusting this setting, the top and bottom numbers reflect the zoomed view depth range.
To change a Setup menu item:
Using the up or down Arrow key, highlight the selection. Press the ENTER key to activate the setting. Using the up or down Arrow key, make the change. Press the ENTER key to accept the change.


Battery Sounds an alarm when the battery has discharged to a user-determined voltage. The Battery Alarm can help determine when the battery is reaching a critical state of discharge.
Shallow The Shallow Alarm sounds a warning at a determined depth between 1 and 900 ft. Deep The Deep Alarm sounds a warning at a determined depth between 1 and 900 ft.
Fish ID The Fish ID setting determines how the graph shows underwater targets and background information. If Fish ID is set to Off, the unit shows all of the available information about the underwater environment. If a fish symbol is selected, the graph shows only the information related to that symbol (large, medium, and small sizes). In wide beam, targets detected toward the outside of the beam are indicated by a hollow fish symbol. Targets detected directly under the boat are indicated by a solid fish symbol. (default) the Fishfinder does not interpret the sonar return data. Fish appear as arches Suspended targets appear as symbols. No background information appears Same as previous with the target depth shown. Suspended targets appear as symbols. Background information appears, making the distinction between fish and structure easier. Same as previous with target depth shown.
Fish Alarm Sounds an alarm when the unit detects what it determines to be a fish. The alarm selections are: Off (default) or On.
Beam The Beam setting allows the selection of a Narrow Beam or Wide Beam for the transducer. A narrow beam provides higher detail structure returns of a smaller bottom area. The wide beam shows a larger fish return area with poorer detail of non-bottom structure. Whiteline The Whiteline setting controls how the unit displays information about the bottom type (hard or soft). With Whiteline off, the bottom return displays as a solid color. With Whiteline on, the strongest area of bottom return becomes white and can be used to determine bottom hardness. A hard bottom returns a stronger signal and displays a thicker bottom layer. A soft bottom returns a weaker signal and displays a thinner bottom layer.

Hard Bottom

Whiteline On
Auto Gain The Auto Gain setting controls the sensitivity of the receiver when in the gain option is set to Auto. Auto Gain has three settings; High, Medium, and Low. Increasing the Auto Gain setting makes the Fishfinder 160C more aggressive when adjusting gain automatically. High auto gain may lead to excessive clutter on the screen.
Whiteline Off Fishfinder 160C Owners Manual 17
Background Use this setting to change the Background color. The available settings are: Black, Blue, and White.
Size Determines the size of the depth, battery, temperature, speed, and distance numbers shown on the screen, either Small or Large (default). Battery Choose to either Hide (default) or Show the current battery voltage. Water Temp Water Temperature automatically appears when set to Auto (default), or you can choose to Hide the Water Temperature. Speed Speed automatically appears when set to Auto (default), or you can choose to Hide the Speed. Distance Distance automatically appears when set to Auto, or you can choose to Hide (default) the Distance.


Keel Offset Use the Keel Offset setting to offset the surface reading for the depth of a keel. This makes it possible to measure depth from the bottom of your keel instead of from the transducers location. Enter a positive number to offset for a keel. You can enter a negative number to compensate for a large vessel that may draw several feet of water.
Transducer at Surface Enter (+) positive number to show depth from the bottom of keel. Transducer at Bottom of Keel Enter (-) negative number to show depth from the surface. 18
Calibrate Speed This only appears if you are using a speed-capable transducer. Calibration is required to ensure that the speed shown on your unit is accurate. Use the boats speedometer, a stopwatch, or a GPS device to determine your speed. If using a stopwatch, measure the distance that the boat travels in a period of time (distance / time = speed). It is recommended that the calibration take place in water having little or no current.
1. Highlight Calibrate Speed, and press the ENTER key. 2. Bring the boat to cruising speed, note the top speed, and then stop the boat. 3. With OK selected, press the ENTER key. 4. Using the up or down Arrow key, set the maximum speed, and press the ENTER key. Note: If the boat is not moving fast enough or the speed sensor is not registering a speed, you will see Speed Too Low displayed in the selection box. With OK highlighted, press ENTER and check that the speed sensor wheel is moving or safely increase boat speed. If there is a problem with the speed sensor/unit, check the cable connections.

To calibrate the speed:

Reset Distance Reset Distance appears only if you are using a speed-capable transducer. Reset Distance resets the displayed Distance to zero.


Simulator The Fishfinder 160C comes with a built-in Simulator mode that allows you to practice and learn the operation of the unit at home rather than on the water. The unit indicates that it is running the Simulator mode by showing in the lower-left of the screen. While in the simulator mode, the unit displays a simulated bottom scene, and the Fishfinder 160C can be controlled (except Gain) just as if it were on the water. To exit Simulator mode, turn the unit off. If no keys are pressed for 1 minute, the unit automatically resets while in Simulator mode. At startup if a transducer is not detected, the unit automatically starts in Simulator mode. Language Choose to display information in one of four languages.
Depth Choose to show measurements in Feet(ft,default), Meters (m) or Fathoms (fa). Temperature Choose to show the water temperature in Fahrenheit (F, default) or Celsius (C). Speed Choose to show Speed in Miles per Hour (mph, default), Kilometers per Hour (kph), or Knots (kt). Distance Choose to show Distance in Miles (mi, default), Nautical Miles (nm), or Kilometers (km).
NMEA Output Choose to turn the NMEA Output On or Off (default). The Fishfinder 160C can output NMEA data for Water Depth, Water Temperature, and Water Speed. The NMEA output is NMEA 0183 version 3.01. Beeper Choose to turn the Beeper On or Off. When the Beeper is On, a beep is sounded when a key is pressed, a message is shown or an alarm activated. With the Beeper Off, all Beeper functions are muted. Contrast Adjust to compensate for different light levels or viewing angles. Moving the slider up darkens the contrast. Moving the slider down lightens the contrast.
Light Changes the level of screen backlighting. This setting affects the middle level (user level) when cycling through the Backlight setting. To cycle through the Backlight settings, press and release the POWER key. Defaults This option restores the factory default settings for the unit.
Fishfinder 160C Owners Manual21
Appendix > Specifications



Physical Specifications

Weight: 1.1 lbs. (0.5 kg) Display: 4.4" diagonal (11.3 cm), 3.14" H x 3.14" W (8.0 cm x 8.0 cm) high-contrast, 16-color CSTN display with adjustable brightness (128 x 128 pixels) Case: Fully gasketed, high-impact plastic alloy, waterproof to IEC 529 IPX7 standards Temp. Range: 5F to 130F (-15C to 55C) Size: 4.9" H x 6.1" W x 2.9" D (12.4 cm x 15.5 cm x 7.4 cm)
Power: Dual Beam: 150 watts (RMS); 1200 watts (peak to peak) Frequency: 200 kHz/80kHz Depth: 900 foot max depth (Depth capacity is dependent on water salinity, bottom type, and other water conditions.)

Fishfinder 160C Owners Manual23
Appendix > Software License Agreement and Declaration of Conformity
Software License Agreement
BY USING THE FISHFINDER 160C, YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS OF THE FOLLOWING SOFTWARE LICENSE AGREEMENT. PLEASE READ THIS AGREEMENT CAREFULLY. Garmin grants you a limited license to use the software embedded in this device (the Software) in binary executable form in the normal operation of the product. Title, ownership rights, and intellectual property rights in and to the Software remain in Garmin. You acknowledge that the Software is the property of Garmin and is protected under the United States of America copyright laws and international copyright treaties. You further acknowledge that the structure, organization, and code of the Software are valuable trade secrets of Garmin and that the Software in source code form remains a valuable trade secret of Garmin. You agree not to decompile, disassemble, modify, reverse assemble, reverse engineer, or reduce to human readable form the Software or any part thereof or create any derivative works based on the Software. You agree not to export or re-export the Software to any country in violation of the export control laws of the United States of America.
Declaration of Conformity (DoC)
Hereby, Garmin, declares that this Fishfinder 160C is in compliance with the essential requirements and other relevant provisions of Directive 1999/5/EC. To view the full Declaration of Conformity, see the Garmin Web site for your Garmin product: Click Manuals, and then select the Declaration of Conformity link.
adjustment bar, the 14 alarms 15 arches 2 arrow keys 12 auto gain 13, 17
clutter 2 color 1 contrast 21
background 18 battery 15, 18 battery alarm 15 battery voltage 13 beam 2, 17 beeper 21 bottom of the water 2 shape and type 13
Declaration of Conformity 24 deep alarm 16 defaults 21 depth 20 distance 13, 18, 20 dual beam 2
installing the transducer 6 the unit 5 the wiring harness 10
packing list 4 physical specifications 22 power/backlight key 12
keel offset 18 language 20 light 21
range 14 reset defaults 21 distance 20 scroll 14 setup menu 15 shallow alarm 16 simulator mode 12, 20 size (numbers) 18 Software License Agreement 24 sonar 1, 22 sound waves 1 specifications 22 speed 13, 18, 20 storage iii strongest sonar returns 1 surface clutter 2 suspended targets 2, 13 system 20
electrical system 10 ENTER key 12 features i fish 13. See alsosuspended targets alarm 16 ID 16 symbols 2, 16
MENU key 12 mounting the bracket assembly 5 the transducer 8, 9
calibrate speed 19 change a setting 14 a setup menu item 15 cleaning the case iii the screen iii

gain 2, 14 graph 16

narrow beam 2, 17 NMEA 10 output 21 numbers 18
operating instructions 12
temperature 20 testing the transom mount installation 10 thermoclines 3 and structure 13 tool list 5 transducer 1 assembling 6 installing 6, 9 mounting on a transom 8 mounting on a trolling motor 9 transom mount installation 10 selecting a mount location 7 trolling motor mounting the transducer 9

water depth 13 temperature 3, 13, 18 weakest returns 1 whiteline 3, 17 wide beam 2, 17 wiring diagram 11 harness installation 10 to a fuse block 11

zoom 15

understanding sonar 1 units 20 unit installation 5

view 15

Copyright 2007 Garmin Ltd. or its subsidiaries Garmin International, Inc. 1200 East 151st Street, Olathe, Kansas 66062, USA Garmin (Europe) Ltd. Liberty House, Hounsdown Business Park, Southampton, Hampshire, SO40 9RB UK Garmin Corporation No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan Part Number 190-00532-00 Rev. D


Technical specifications

Full description

The Fishfinder 160C is a rugged, affordable color sounder for recreational anglers who fish primarily in freshwater lakes. Fish returns and bottom information are clearly shown on the unit's bright, sunlight-readable color display, making it easier for you to scope out your fishing grounds. Fishfinder 160C's included dual-beam transducer provides excellent shallow-water performance, and the wide viewing angle lets you see fish even off the sides of the boat. The 160C also offers Ultrascroll, which refreshes the screen with lightning speed so you always see the most up-to-date information. You can manually adjust the gain or set to Auto Gain, which adjusts the level of detail you see automatically.

Product TypeFishfinder - portable - included transducer
Width6.1 in
Depth2.9 in
Height4.9 in
Weight17.6 oz
AlarmsDeep water, fish size, low battery, shallow water
FeaturesSee-Thru technology, AutoGain Technology, automatic settings backup, Ultrascroll, Fish Symbol ID, Whiteline
Connection / InterfaceNMEA 0183v3.01
Transducer TypeDual-beam
Transducer MountTransom
Maximum Depth900 ft
Beamwidth14/45 degrees
Operating Frequency80/200 kHz
Power Output (Peak to Peak)1200 W
Power Output (RMS)150 W
Built-in Display
TypeCSTN - 3.1 in x 3.1 in
Resolution128 x 128
Display Diagonal4.4"
Color SupportColor
Color Depth16 color
FeaturesAdjustable brightness, 2x zoom, 4x zoom
Low Voltage PowerDC 10 - 18 V
Waterproof StandardIPX7
Included AccessoriesMounting bracket, power cable, protective cover
Manufacturer Warranty
Service & Support1 year warranty
Environmental Parameters
Min Operating Temperature5 °F
Max Operating Temperature131 °F
Universal Product Identifiers
Part Numbers010-00403-00, 010-00403-02



VGN-NR11m-S WF-J1254 KV-21CL10B Fttx95-1 HR2074 FO-3150 Nikkor MZ-42PZ13B Call 5310 Speed Transducer Administrators GSM712F VSX-AX5ai-S V6515 Wixl 125 SNR6500 12470 W ITD 65 Collimator SA-940 Gzmg20AA-GZ-mg20 ROC3407 DTH250E Laserjet 3550 CDR760-00 Ii IIE 9 0 RX-V392RDS Ipod-HP Maestro 3050 Travelmate 6460 VSX-D514 System Price Volvo XC60 A-960 Nokia 5100 S Gate EW757F CQ-DFX555 VGN-FJ270-B DMC-T26 HD44780U LH-T6740A KV-32FX66K Manual PRA-1200 CRA-1656SP VGN-SR19XN NAD 310 Autoloader SBV900 Arxl 105 PPV-20 KX-TG7233E TS150CR Possession AR-BC260 F1403TD A 50 DB345MP Portable Speaker F5D7234-4 BX300F CW F300 P7230 Zoom 80 UWA-BR100 LD-450ST8 MG-606BL KDC-C603 TI312BT1 Edition NWZ-E355 101735 Office 25 Scanner 4610 IV DSS-2 Proheat 7901 ETX-125PE 54710 BT2015 Flasher MP721 4363Z LD-2293THB KX-670 System Photos WS-7078UF SM1400 I470D DV250-NZ Dlex7177RM RBC30sesa MS-7380 M410R Merlin Blend NV-F65B P5GZ-MX PVR-8000


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