Garmin CS 1522 User manual

CS 1522
Professional Fishnder
Owner’s Manual

© 2020 Garmin Ltd. or its subsidiaries
All rights reserved. Under the copyright laws, this manual may not be copied, in whole or in part,
without the written consent of Garmin. Garmin reserves the right to change or improve its products
and to make changes in the content of this manual without the obligation to notify any person or
organization of such changes or improvements. Go to www.garmin.com for current updates and
supplemental information concerning the use of this product.
Garmin®and the Garmin logo are trademarks of Garmin Ltd. or its subsidiaries, registered in
the USA and other countries. Fantom™, FUSION-Link™, Garmin ClearVü™, Garmin Connect™,
Garmin Helm™,Garmin LakeVü™, Garmin Quickdraw™, GCV™, GMR™, GRID™, GXM™, HomePort™,
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its subsidiaries. These trademarks may not be used without the express permission of Garmin.
SD™ and the SDHC logo are trademarks of SD-3C, LLC.
NMEA®, NMEA 2000®, and the NMEA 2000 logo are registered trademarks of the National Marine
Electronics Association.
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Printed in Taiwan
March 2020
190-02655-2B Rev. C
製造銷售： 台灣國際航電股份有限公司
製造地址： 新北市汐止區樟樹二路68號
電 話： (02)2642-8999
客服專線： (02)2642-9199

1
TABLE OF CONTENTS
CHAPTER 1 INTRODUCTION������������������������������������������������������������������������� 5
1.1 A Brief History of Sonars ..................................................................................................5
1.1.1 Basic Principles of Sonars ....................................................................................... 5
1.1.2 Development of Sonars............................................................................................ 5
1.1.3 Determining the Distance......................................................................................... 5
1.1.4 Locating Fish on a Sonar Display ............................................................................ 6
1.2 Specications ...................................................................................................................6
1.2.1 NMEA 2000 PGN Information.................................................................................. 7
1.2.2 NMEA 0183 Information .......................................................................................... 8
1.3 Inside the Box ...................................................................................................................9
1.3.1 Device Overview...................................................................................................... 10
1.3.2 Ports ........................................................................................................................ 11
1.3.3 PortPinDenition................................................................................................... 11
1.4 Installation ......................................................................................................................12
1.4.1 TypicalConguration.............................................................................................. 12
1.4.2 Tools Needed.......................................................................................................... 12
1.4.3 Mounting Considerations....................................................................................... 13
1.4.4 Bail Mounting the Device ....................................................................................... 13
1.4.5 Flush Mounting the Device..................................................................................... 14
1.5 Thru-Hull Transducer Installation ...................................................................................16
1.5.1 Tools Needed.......................................................................................................... 16
1.5.2 Mounting Considerations....................................................................................... 16
1.5.3 Fairing Block Angle Cut .......................................................................................... 17
1.5.4 Cable Considerations ............................................................................................. 18
1.6 Cable and Connection Considerations............................................................................18
1.6.1 Power/NMEA 0183 Cable ...................................................................................... 18
1.6.2 Connecting the Wiring Harness to Power............................................................. 19
1.6.3 GPS Antenna Considerations................................................................................. 20
1.6.4 Connecting the Device to a Transducer ................................................................ 20
1.6.5 GSD Sonar Considerations..................................................................................... 20
1.6.6 NMEA 2000 Considerations.................................................................................. 20
1.6.7 NMEA 0183 Connection Considerations............................................................... 21
1.6.8 Lamp and Horn Connections ................................................................................. 25
1.7 Control Panel ..................................................................................................................26
1.8 SD Card ...........................................................................................................................26
1.8.1 Capturing a Screenshot.......................................................................................... 27

2
1.8.2 Updating the Software............................................................................................ 27
1.9 Protective Cover..............................................................................................................27
1.10 Garmin Support Center ...................................................................................................28
1.10.1 Registering Your Device ......................................................................................... 28
CHAPTER 2 GETTING STARTED ����������������������������������������������������������������� 29
2.1 Basic Operations.............................................................................................................29
2.1.1 Powering On/Off..................................................................................................... 29
2.1.2 Stopping the Transmission of the Transducer...................................................... 29
2.1.3 Adjusting the Backlight .......................................................................................... 29
2.1.4 Switching Display Modes....................................................................................... 29
2.2 Display Modes.................................................................................................................30
2.2.1 Typical Views .......................................................................................................... 30
2.2.2 Sonar Interface Overview ....................................................................................... 31
2.3 Adjusting the Sonar Display............................................................................................ 31
2.3.1 Adjusting the Frequency of the Transducer.......................................................... 31
2.3.2 Adjusting the Range ............................................................................................... 32
2.3.3 Adjusting the Zoom ................................................................................................ 32
2.3.4 Hiding Overlay Data and Depth Scale.................................................................... 35
2.4 Optimizing the Sonar Display..........................................................................................35
2.4.1 Adjusting Gain......................................................................................................... 35
2.4.2 Adjusting Echo Stretch........................................................................................... 35
2.4.3 Adjusting Contrast.................................................................................................. 36
2.4.4 Adjusting TVG ......................................................................................................... 36
2.5 Interfacing with the Sonar Display ..................................................................................36
2.5.1 Accessing the Menu............................................................................................... 36
2.5.2 Selecting Split Screens........................................................................................... 37
2.5.3 Invoking the Cursor................................................................................................. 37
2.5.4 Marking a Waypoint................................................................................................ 38
2.5.5 Capturing a Screenshot.......................................................................................... 38
2.5.6 Acknowledging and Silencing an Alarm................................................................ 38
2.6 Navigation Chart .............................................................................................................39
2.6.1 Navigation Chart Interface..................................................................................... 39
2.6.2 Navigating to a Point.............................................................................................. 39
2.6.3 Viewing Information ............................................................................................... 40
2.7 F1-F4 Shortcuts ..............................................................................................................41
2.7.1 Using a Shortcut Function...................................................................................... 41
2.7.2 Swapping an Assigned Function ........................................................................... 41

3
CHAPTER 3 MENU AND SETTINGS������������������������������������������������������������� 43
3.1 Accessing the Menu .......................................................................................................43
3.2 Sonar Setup ....................................................................................................................43
3.2.1 Adjusting Gain......................................................................................................... 43
3.2.2 Adjusting Contrast.................................................................................................. 44
3.2.3 Adjusting Frequency............................................................................................... 44
3.2.4 Adjusting Range...................................................................................................... 44
3.2.5 Adjusting Zoom ...................................................................................................... 44
3.2.6 Adjusting Shift ........................................................................................................ 44
3.2.7 Adjusting Scroll Speed ........................................................................................... 44
3.2.8 Adjusting Bottom Search Limit.............................................................................. 45
3.3 Clutter .............................................................................................................................45
3.3.1 Reducing Interference ............................................................................................ 46
3.3.2 Selecting a Color Limit ........................................................................................... 46
3.3.3 Filtering Colors........................................................................................................ 46
3.3.4 Smoothing Noises .................................................................................................. 46
3.3.5 Reducing Surface Noise......................................................................................... 47
3.3.6 Adjusting Echo Stretch........................................................................................... 47
3.3.7 Adjusting TVG ......................................................................................................... 47
3.4 Alarms.............................................................................................................................48
3.4.1 Setting a Shallow Water Alarm .............................................................................. 48
3.4.2 Setting a Deep Water Alarm................................................................................... 48
3.4.3 Setting Water Temperature Alarms ....................................................................... 48
3.4.4 Setting Contour Alarms.......................................................................................... 48
3.4.5 Setting Fish Alarms ................................................................................................ 49
3.4.6 Setting Collision Alarms......................................................................................... 49
3.4.7 Setting Up Boundaries............................................................................................ 49
3.5 Sonar Appearance...........................................................................................................50
3.5.1 Changing the Colors............................................................................................... 50
3.5.2 Selecting On-Screen Data....................................................................................... 50
3.5.3 Selecting Views in SideVü Mode ........................................................................... 51
3.6 Chart Setup ..................................................................................................................... 51
3.6.1 Selecting the Chart Orientation.............................................................................. 52
3.6.2 Personalizing the Chart.......................................................................................... 52
3.7 Navigation Info................................................................................................................52
3.7.1 Navigating to Coordinates ..................................................................................... 52
3.7.2 Managing Navigational Data.................................................................................. 52
3.7.3 Managing Tracks .................................................................................................... 53

4
3.8 Other Vessels..................................................................................................................53
3.8.1 Managing Other Vessels ........................................................................................ 53
3.8.2 AIS ........................................................................................................................... 54
3.9 Quickdraw Contours........................................................................................................55
3.9.1 Mapping a Body of Water....................................................................................... 55
3.9.2 Adding a Label to a Quickdraw Contours Map ..................................................... 55
3.9.3 Garmin Quickdraw Contours Settings................................................................... 56
3.9.4 Garmin Quickdraw Community.............................................................................. 56
3.10 Navigation Chart Appearance .........................................................................................58
3.10.1 Customizing Chart Layers...................................................................................... 58
3.10.2 Editing Data Panels ................................................................................................ 58
3.11 Settings...........................................................................................................................59
3.11.1 System Settings...................................................................................................... 59
3.11.2 Preferences............................................................................................................. 59
3.11.3 Communications Settings...................................................................................... 60
3.11.4 My Vessel Settings ................................................................................................. 60
3.11.5 Data Management .................................................................................................. 60
CHAPTER 4 ECHO PATTERNS ���������������������������������������������������������������������61
4.1 Surface Noise ................................................................................................................. 61
4.2 Colliding Currents ........................................................................................................... 61
4.3 Plankton Layers ..............................................................................................................62
4.4 Air Bubbles......................................................................................................................62
4.5 Side-Lobe Echoes ...........................................................................................................62
CHAPTER 5 APPENDICES��������������������������������������������������������������������������� 63
5.1 Error Message and Troubleshooting...............................................................................63
5.2 Hazardous Substance Table ...........................................................................................63
5.3 Declaration of Conformity...............................................................................................64
5.4 Menu Tree .......................................................................................................................65

1.1 A Brief History of Sonars 5
CHAPTER 1 INTRODUCTION
WARNING
See the Important Safety and Product Information in the Installation Instructions for product
warnings and other important information.
You are responsible for the safe and prudent operation of your vessel. Sonar is a tool that
enhances your awareness of the water beneath your boat. It does not relieve you of the
responsibility of observing the water around your boat as you navigate.
All route and navigation lines displayed on the device are intended to provide general guidance to
identify proper channels, and are not intended to be strictly followed. Always refer to the navaids
and conditions on the water when navigating to avoid groundings or hazards that could result in
vessel damage, personal injury, or death.
1�1 A Brief History of Sonars
1�1�1 Basic Principles of Sonars
Sonar, originally an acronym for Sound Navigation and Ranging, is a technology that uses
sound propagation to detect objects under the surface of water. Sonar devices determine
the distance to objects by sending out sound pulses and measuring the time it takes for
thesoundpulsestobereectedback.
1.1.2 Development of Sonars
Sonars were developed during the period of the First World War to assist in the detection
of submarines and icebergs under water. The technology received major improvements
duringWorldWarII,andeventuallydevelopedintomodernshnders.
Fishndershelpdetectschoolsofshbytransmittingultrasonicwavesfromatransducer
mountedonthebottomoftheboat,andlistensforreectedechoes.Theechoesover
time can then be plotted on a sonar display in relation to the depths of the water.
1.1.3 Determining the Distance
Fishndershelpdetectschoolsofshbytransmittingultrasonicwavesfromatransducer
mountedonthebottomoftheboat.Thepulsewouldreectstronglyoffsolidobjects
liketheseaoor,ormoreweaklyofftheairconservedinshbladders.Withthespeedof
sound in water known (roughly 1,500 meters per second), the received echoes over time
can then be plotted on a sonar display in relation to the depths of the water.

CHAPTER1 INTRODUCTION6
1.1.4 Locating Fish on a Sonar Display
The beam of sound transmitted from the transducer spreads wider as it passes into
deeperwater,formingaconicalshapeundertheboat.Asashcrossesthecone,the
distancebetweentheshandthetransducerwouldbemarkedonthesonardisplay,and
sincethecenteroftheconeisclosesttothetransducer,ashthatswimsthroughthe
cone at a constant depth would form an arch on the sonar display.
1�2 Specifications
Specication Measurement
Dimensions (W x H x D) 355 x 376.7 x 82.7 mm
Weight 4.0 kg (6.0 kg with bail mount)
Display size (W x H) 15″(228.1x304.1mm)
Display type XGA
Display resolution 1024 x 768 pixels
Power supply 10 to 36 VDC
Fuse 8 A, 125 V fast-acting
Max. power consumption at 12 VDC 41.4 W
Typical current draw at 12 VDC 4 A
Max. current draw at 12 VDC 6.5 A
Sonar frequencies* Traditional: 50/77/200 kHz, dual channel CHIRP
ClearVü: 260/455/800 kHz, CHIRP
SideVü: 260/455/800 kHz, CHIRP
Sonar transmit power (RMS)** Traditional: 1 kW
Traditional dual channel CHIRP: 1 kW
ClearVü CHIRP: 500 W
SideVü CHIRP: 500 W
Sonar depth*** 5,000 ft at 1 kW
Temperature range -15° to 50°C (5° to 122°F)
Material Polycarbonate plastic and die-cast aluminum
Waterproof rating**** IPX6/IPX7 (IEC 60529)
Memory card 2 SD™ card slots; 32 GB max. storage
Max. AIS targets 300
Max. waypoints 5,000

1.2 Specications 7
Specication Measurement
Max. routes 100
Max. saved tracks 50
Chart format Garmin BlueChart
Interface 2 NMEA 0183, 1 NMEA 2000
Compass-safe distance 65 cm (25.5 in)
NMEA 2000 LEN 2
NMEA 2000 draw 75 mA max.
SW version (as of Dec 2019) 2.0
* Dependent upon transducer.
** Dependent upon transducer rating and depth.
*** Dependent upon the transducer, water salinity, bottom type, and other water conditions.
**** The device is protected against powerful jets of water, and withstands incidental
exposure to water of up to 1 m for up to 30 minutes. For more information on water rating,
go to Garmin.com/waterrating.
1.2.1 NMEA 2000 PGN Information
Type PGN Description
Transmit
and
receive
059392 ISO acknowledgment
059904 ISO request
060928 ISO address claim
126208 NMEA: Command, request, and acknowledge group function
126464 Transmit and receive PGN list group function
126996 Product information
127250 Vessel heading
128259 Speed: Water referenced
128267 Water depth
129025 Position: Rapid update
129026 COG and SOG: Rapid update
129029 GNSS position data
129540 GNSS satellites in view
130306 Wind data
130312 Temperature
Transmit 127258 Magnetic variance
129283 Cross track error
129284 Navigation data
129285 Navigation route and waypoint info
Receive 065030 Generator average basic AC quantities (GAAC)
126992 System time
127488 Engine parameters: Rapid update
127489 Engine parameters: Dynamic
127493 Transmission parameters: Dynamic
127504 AC output status
127505 Fluid level

CHAPTER1 INTRODUCTION8
Type PGN Description
Receive 127508 Battery status
129038 AIS class A position report
129039 AIS class B position report
129040 AIS class B extended position report
129539 GNSS DOPs
129794 AIS class A static and voyage related data
129809 AIS class B “CS” static data report, part A
129810 AIS class B “CS” static data report, part B
130310 Environmental parameters
130311 Environmental parameters (obsolete)
130313 Humidity
130314 Actual pressure
1.2.2 NMEA 0183 Information
Type Sentence Description
Transmit GPAPB APB: Heading or track controller (autopilot) sentence “B”
GPBOD BOD: Bearing (origin to destination)
GPBWC BWC: Bearing and distance to waypoint
GPGGA GGA:Globalpositioningsystemxdata
GPGLL GLL: Geographic position (latitude and longitude)
GPGSA GSA: GNSS DOP and active satellites
GPGSV GSV: GNSS satellites in view
GPRMB RMB: Recommended minimum navigation information
GPRMC RMC:RecommendedminimumspecicGNSSdata
GPRTE RTE: Routes
GPVTG VTG: Course over ground and ground speed
GPWPL WPL: Waypoint location
GPXTE XTE: Cross track error
PGRME E: Estimated error
PGRMM M: Map datum
PGRMZ Z: Altitude
SDDBT DBT: Depth below transducer
SDDPT DPT: Depth
SDMTW MTW: Water temperature
SDVHW VHW: Water speed and heading
TLL Target latitude and longitude
TTM Tracked target message
TLB Target label
ZDA Date and time
XDR Transducer values
Receive DPT Depth
DBT Depth below transducer
MTW Water temperature

1.3 Inside the Box 9
Type Sentence Description
Receive VHW Water speed and heading
WPL Waypoint location
DSC Digital selective calling information
DSE Expanded digital selective calling
HDG Heading, deviation, and variation
HDM Heading, magnetic
MWD Wind direction and speed
MDA Meteorological composite
MWV Wind speed and angle
VDM AIS VHF data-link message
You can purchase complete information about National Marine Electronics Association
(NMEA) format and sentences from: NMEA, Seven Riggs Avenue, Severna Park, MD
21146 USA (www.nmea.org).
1.3 Inside the Box
Check that these items are included in the box.
13
FOREASY REMOVAL,BEND & PEEL HERE
17
16
15
14

CHAPTER1 INTRODUCTION10
Item Description Part Number
CS 1522 Display Unit 011-04973-02
Protective cover 145-03158-60
Power cable (2 m) 320-00458-70
12 pin to 8 pin XDCR Adapter Cable 320-00844-01
Garmin sticker 161-04518-01
Bail mount bracket 011-04973-90
Bail mount knob x 2 145-02020-01
Bail mount screw x 4, M6.3 x 1.8 x 25 211-00171-04
Bail mount washer x 4 212-20084-00
Flush mount screw x 4, M4 x 0.7 x 70 211-00210-04
Flush mount screw x 4, M3 x 0.5 x 60 211-52207-55
Flush mount screw x 4, TFWM, 4.0 x 25 211-00171-00
13 Nut plate x 4 115-01407-50
14 Trim piece snap cover x 2 145-03158-50
15 Flush mount foam gasket x 4 253-01299-00
16 Flush mount template 190-02655-03
17 Documentation K00-01227-01
1.3.1 Device Overview
The Garmin CS 1522 features a 15-inch XGA display, with a control panel, and 2 SD
cardslotsontheside.TheCS1522canbebailmountedorushmountedtoyourboat.
Connection to a transducer such as GT40-TM, is required.
378.3 mm 108.3 mm
390.2 mm

1.3 Inside the Box 11
1�3�2 Ports
The ports are located at the back of the device.
POWER
NMEA 0183
12-PIN XDCR GPS ANT NMEA 0183 GSD SONAR
NMEA 2000
Ground
1.3.3 Port Pin Denition
Power Port
NMEA TXB
NMEA TXA
NMEA RXA
NMEA RXB
Accessory
Alarm
Power supply +Power supply - / Ground
NMEA 0183 Port
TXA
Ground
TXB
NC
RXB
RXA
NMEA 2000 Port
Power supply +
Power supply - / Ground
CAN_L
NC
CAN_H

CHAPTER1 INTRODUCTION12
1.4 Installation
WARNING
When connecting the power cable, do not remove the in-line fuse holder. To prevent the
possibilityofinjuryorproductdamagecausedbyreoroverheating,theappropriate
fusemustbeinplaceasindicatedintheproductspecications.Inaddition,connecting
the power cable without the appropriate fuse in place voids the product warranty.
CAUTION
Failure to install and maintain the equipment in accordance with these instructions could
result in damage or injury.
Always wear safety goggles, ear protection, and a dust mask when drilling, cutting, or
sanding.
NOTICE
When drilling or cutting, always check what is on the opposite side of the surface.
Read all installation instructions before proceeding with the installation. If you
experiencedicultyduringtheinstallation,contactGarminsupport.
1.4.1 Typical Conguration
Thediagramshowsatypicalcongurationofthedevice.
Rectier
NMEA 0183
Network GPS Antenna
TransducerTransducer
CS 1522
10–36 VDC
Power Supply
115/230 VAC
Power Supply
GSD
1.4.2 Tools Needed
• Bail mount: drill and drill bits appropriate for the surface and hardware
• Flush mount: drill and 14 mm (9/16 in), 6 mm (1/4 in) and 3.6 mm (9/64 in) drill bits
with nut plates, or 3.2 mm (1/8 in) drill bit without nut plates
• #2 Phillips screwdriver
• Jigsaw or rotary tool
• File and sandpaper
• Marine sealant (recommended)

1.4 Installation 13
1.4.3 Mounting Considerations
NOTICE
This device should be mounted in a location that is not exposed to extreme
temperatures or conditions. The temperature range for this device is listed in the product
specications.Extendedexposuretotemperaturesexceedingthespeciedtemperature
range, in storage or operating conditions, may cause device failure. Extreme-
temperature-induced damage and related consequences are not covered by the warranty.
When selecting a mounting location, you should observe these considerations:
• The location should be directly in front or slightly to your left as you operate your boat,
to provide optimal viewing and allow easy access to all device interfaces, such as the
control panel and the SD card slots.
• The location must be strong enough to support the weight of the device and protect it
from excessive vibration or shock.
• To avoid interference with a magnetic compass, the device should not be installed
closer to a compass than the compass-safe distance value listed in the product
specifications.
• The location must allow room for the routing and connection of all cables.
1.4.4 Bail Mounting the Device
NOTICE
Ifyouaremountingthebracketonberglasswithscrews,itisrecommendedtousea
countersink bit to drill a clearance counterbore through only the top gel-coat layer. This
will help to avoid cracking in the gel-coat layer when the screws are tightened.
Stainless-steelscrewsmaybindwhenscrewedintoberglassandovertightened.Itis
recommended to apply an anti-seize lubricant on the screws before installing them.
Youcanusethebailmountbrackettobailmountthedeviceonaatsurface.
1 Using the bail mount bracket as a template, mark the pilot holes.
2 Using a 3 mm (1/8 in) drill bit, drill the pilot holes.
3 Secure the bail mount bracket to the mounting surface using the bail mount screws
and washers.
4 Install the bail mount knobs on the sides of the device.

CHAPTER1 INTRODUCTION14
5 Place the device in the bail-mount and tighten the bail mount knobs.
1.4.5 Flush Mounting the Device
NOTICE
Usetheincludedtemplateandhardwaretoushmountthedeviceinyourdashboard.
Becarefulwhencuttingtheholetoushmountthedevice.Thereisonlyasmallamount
of clearance between the case and the mounting holes, and cutting the hole too large
could compromise the stability of the device after it is mounted.
1 Trimthetemplate,andmakesureittsinthelocationyouwanttomountthedevice.
2 Secure the template to the mounting location.
3 Using a 14 mm (9/16 in) drill bit, drill one or more of the holes inside the corners of
the solid line on the template to prepare the mounting surface for cutting.
4 Using a jigsaw or a rotary tool, cut the mounting surface along the inside line on the
template.
5 Placethedeviceinthecutouttotestthet.
6 Ifnecessary,usealeandsandpapertorenethesizeofthecutout.
7 Useaprytool,suchasaatpieceofplasticorascrewdriver,tocarefullypryupthe
trim caps from the sides, slide the pry tool to the center, and remove the trim caps.
NOTICE
Use a plastic pry tool when possible. Using a metal pry tool such as a screwdriver can
damage the trim caps and the device.
Trim Cap
8 Afterthedevicetscorrectlyinthecutout,ensurethemountingholesonthedevice
line up with the larger 6 mm (1/4 in) holes on the template.
9 If the mounting holes on the device do not line up, mark the new hole locations.
10 Select an option:
• If you are using a nut plate, drill a 6 mm (1/4 in) hole in the larger hole locations.
• If you are not using a nut plate, drill 3.2 mm (1/8 in) holes in the hole locations.
11 Starting in one corner of the template, place a nut plate over the larger hole
drilled in the previous step.

1.4 Installation 15
If you are using a nut plate, the smaller hole on the nut plate should line up with the
smaller hole on the template.
12 If the smaller hole on the nut plate does not line up with the smaller hole on the
template, mark the new hole location.
13 If you are using a nut plate, drill a 3.6 mm (9/64 in) hole in the smaller hole location.
14 Repeat to verify placement of the remaining nut plates and holes on the template.
15 Remove the template from the mounting surface.
16 Starting in one corner of the mounting location, place a nut plate on the back of the
mounting surface, lining up the large and small holes.
Theraisedportionofthenutplateshouldtintothelargerhole.
17 Secure the nut plates to the mounting surface by fastening the included M3 screws
through the smaller 3.6 mm (9/64 in) holes.
18 Install the foam gasket on the back of the device.
The pieces of the foam gasket have adhesive on the back. Make sure you remove the
protective liner before installing them on the device.
19 If you will not have access to the back of the device after you mount it, connect all
necessary cables to the device before placing it into the cutout.
NOTICE
To prevent corrosion of the metal contacts, cover unused connectors with the
attached weather caps.
20 Apply marine sealant between the mounting surface and the device to properly seal
and prevent leakage behind the dashboard.
21 If you have access to the back of the device, apply marine sealant around the cutout.
22 Place the device into the cutout.
23 Secure the device to the mounting surface using the included M4 screws .
24 Wipe away all excess marine sealant.
25 Install the trim caps by snapping them in place around the edges of the device.

CHAPTER1 INTRODUCTION16
1.5 Thru-Hull Transducer Installation
WARNING
After installation, check your boat for leaks before leaving it in the water for an extended
period of time.
CAUTION
Always wear safety goggles, ear protection, and a dust mask when drilling, cutting, or
sanding.
Do not install a transducer in the engine compartment or near heat sources.
NOTICE
When drilling or cutting, always check what is on the opposite side of the surface.
Thedeviceshouldbeinstalledbyaqualiedmarineinstaller.
1.5.1 Tools Needed
• Drill
• 3 mm (1/8 in), 9 mm (3/8 in), 13 mm (1/2 in) drill bits
• fiberglasshull:25mm(1in),29mm(1⅛in),32mm(1¼in)spadebit
• metalhull:32mm(1¼in)holesaw
• Band saw or table saw
• Slip-joint pliers or crescent wrench
• Masking tape
• Marine sealant
• Epoxy or exposed core sealant (cored fiberglass hull)
1.5.2 Mounting Considerations

1.5 Thru-Hull Transducer Installation 17
When selecting a mounting location, observe these considerations:
• On outboard and sterndrive vessels , the transducer should be mounted in front of
and close to the engine or engines.
• On inboard vessels , the transducer should be mounted in front of and far away from
the engine propeller and shaft.
• On step-hull vessels , the transducer should be mounted in front of the first step.
• On full-keel vessels , the transducer should be mounted at a slight angle that aims at
the bow, not parallel to the centerline.
• On fin-keel vessels , the transducer should be mounted 25 to 75 cm (10 to 30 in) in
front of the keel and a maximum of 10 cm (4 in) to the side of the centerline.
• On vessels with displacement hulls , the transducer should be mounted
approximately 1/3 aft of the waterline length of the vessel from the bow, and 150 to
300 mm (6 to 12 in) to the side of the centerline.
• The transducer should be mounted parallel to the bow-stern axis of your vessel.
• The transducer should not be mounted behind strakes, struts, fittings, water intake
or discharge ports, or anything that creates air bubbles or causes the water to
become turbulent. The transducer must be in clean (non-turbulent) water for optimal
performance.
• The transducer should not be mounted in a location where it might be jarred when
launching, hauling, or storing.
• On single-drive boats, the transducer must not be mounted in the path of the propeller.
The transducer can cause cavitation that can degrade the performance of the boat
and damage the propeller.
• On twin-drive boats, the transducer should be mounted between the drives, if possible.
1.5.3 Fairing Block Angle Cut
A fairing block positions your transducer parallel to the water line for increased sonar
accuracy. You must measure the deadrise angle of your boat hull to determine if a fairing
block is necessary to mount the transducer. If the deadrise angle of your mounting
location exceeds 5°, you should use a fairing block to mount the transducer.
Deadrise Angle
Deadrise is the angle formed between a horizontal line and a boat hull at a single point.
Youcanmeasurethedeadriseanglewithananglender,aprotractor,oradigitallevel.
Youcanalsoaskyouboatmanufacturerforthedeadriseangleofthespecicpointon
your boat hull.
Transom Transducer
Fairing Block
Deadrise
NOTE: A boat may have several deadrise angles depending on the shape of the hull.
Measure the deadrise angle only at the location where you plan to install the transducer.

CHAPTER1 INTRODUCTION18
1.5.4 Cable Considerations
Itmaybenecessarytodrill32mm(1¼in)holesforroutingthepowerornetworkcables.
• When routing multiple cables through the same hole, you must route the network
cable first because of the size of the network connector.
• You must apply marine sealant to the hole after the cables are in place to ensure a
waterproof seal.
If the routing hole must be made in a visible location, decorative cable grommets can be
purchased from Garmin or a Garmin dealer (optional).
• If needed, you can trim the grommet to enable you to route multiple cables through
the same hole.
• The optional grommet does NOT provide a waterproof seal. You must apply marine
sealant to the grommet after the cables are in place to ensure a waterproof seal.
When installing the cables, you should observe these considerations:
• Cutting the Garmin Marine Network cable is not recommended, but a field install
kit can be purchased from Garmin or a Garmin dealer if cutting the network cable is
necessary.
• To ensure safety, appropriate tie-wraps, fasteners, and sealant should be used to
secure the cable along the route and through any bulkheads or the deck.
• You should not run cables near moving objects and high-heat sources, or through
doorways and bilges.
• To avoid interference with other equipment, you should not run network and power
cables next to or parallel to other cables, such as radio antenna lines or power cables.
If this is not possible, the cables should be shielded with metal conduit or a form of
EMI shielding.
• You should install the power cable as close to the battery source as possible.
• If it is necessary to extend the cable, you must use the appropriate wire gauge.
• Incorrectly extended runs of cable may cause the device to malfunction due to
insufficient power transmission.
1.6 Cable and Connection Considerations
• The cables may have been packaged without the locking rings installed. If so, you
should route the cables before you install the locking rings.
• After connecting a locking ring to a cable, make sure the ring is securely connected
and the O-ring is in place so the connection remains secure.
1.6.1 Power/NMEA 0183 Cable
• The wiring harness connects the device to power, NMEA 0183 devices, and a lamp or
a horn for visible or audible alerts.
• If it is necessary to extend the NMEA 0183 or alarm wires, you must use 22 AWG (.33
mm²) wire.