Garmin 536 M Gsd 20 Manual Installation Guide 190 00255 00_0E

GSD-20 GSD20_InstallationGuide

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GSD 20

Sounder

Module

installation instructions

All rights reserved. Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted, disseminated, downloaded, or stored in any

storage medium, for any purpose without the express prior written consent of Garmin. Garmin hereby grants permission to download a single copy of this manual onto

a hard drive or other electronic storage medium to be viewed and to print one copy of this manual or of any revision hereto, provided that such electronic or printed

copy of this manual must contain the complete text of this copyright notice and provided further that any unauthorized commercial distribution of this manual or any

revision hereto is strictly prohibited.

Information in this document is subject to change without notice. Garmin reserves the right to change or improve its products and to make changes in the content

without obligation to notify any person or organization of such changes or improvements. Visit the Garmin Web site (www.garmin.com) for current updates and

supplemental information concerning the use and operation of this and other Garmin products.

Garmin®, DCG®, and See-Thru® are a registered trademark of Garmin Ltd. or its subsidiaries and may not be used without the express permission of Garmin.

Safety 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 California’s Proposition 65. If you have any questions or would like additional information, please refer to our Web

site at http://www.garmin.com/prop65.

Limited Warranty

This Garmin product is warranted to be free from defects in materials or workmanship for one year from the date of purchase. Within this period, 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,

provided that the customer shall be responsible for any transportation cost. This warranty does not cover failures due to installation errors, abuse, misuse, accident, or

unauthorized alteration or repairs.

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.

Garmin retains the exclusive right to repair or replace the product 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.

Products sold through online auctions are not eligible for rebates or other special offers from Garmin. Online auction confirmations are not accepted for warranty

verification. To obtain warranty service, an original or copy of the sales receipt from the original retailer is required. Garmin will not replace missing components from

any package purchased through an online auction.

To obtain warranty service, contact your local Garmin authorized dealer or call Garmin Product Support for shipping instructions and an RMA tracking number. The

product should be securely packed with the tracking number clearly written on the outside of the package. The product should then be sent, freight charges prepaid, to

any Garmin warranty service station. A copy of the original sales receipt is required as the proof of purchase for warranty repairs.

July 2005 Part Number 190-00225-00 Rev. E Printed in Taiwan

Garmin International, Inc.

1200 East 151st Street,

Olathe, Kansas 66062, U.S.A.

Tel. 913/397.8200 or 800/800.1020

Fax 913/397.8282

Garmin (Europe) Ltd.

Unit 5, The Quadrangle,

Abbey Park Industrial Estate,

Romsey, SO51 9DL, U.K.

Tel. 44/0870.8501241

Fax 44/0870.8501251

Garmin Corporation

No. 68, Jangshu 2nd Road,

Shijr, Taipei County, Taiwan

Tel. 886/2.2642.9199

Fax 886/2.2642.9099

© Copyright 2004, 2005 Garmin Ltd. or its subsidiaries

1GSD 20 Sonar Module

INTRODUCTION

Thank you for choosing the Garmin GSD 20. The GSD 20 is an intelligent, remote sounder module designed to include powerful features

as found in other Garmin sounders, including Depth Control Gain (DCG®) and See-Thru® technology. When used with compatible Garmin

chartplotters, it provides full-featured depth sounder functions. It may interface to multiple head units, providing for complete sounder control

from multiple stations, including transmit frequency, range, and gain adjustments. To get successful results from your GSD 20, take time to read

through this installation guide. If any items are missing, please contact your Garmin dealer immediately.

Included Equipment:

• GSD 20 Sounder Module

• 30’ (9.1 m) Power/Data Cable

• Installation Guide for the GSD 20

Optional Transducers

The transducer acts as the eyes and ears of your new sonar. The transducer transmits sound waves toward the bottom in a cone shape. The larger

the cone angle, the larger the coverage area at a given depth.

Proper transducer selection and installation are critical to the operation of your unit. Since mounting locations vary, see your local dealer or

contact Garmin Product Support for further information. A full list of transducers can be found at www.garmin.com.

INTRODUCTION

Power/Data

Connector

LED Status Indicator

Transducer

Connector

Mounting Holes

2

GSD 20 Sonar Module

INSTALLATION INSTRUCTIONS

INSTALLATION INSTRUCTIONS

The GSD 20 must be properly installed according to the following instructions to get the best possible performance. To complete the

installation, you need the appropriate fasteners. If you experience difficulty with the installation, contact Garmin Product Support.

The module should be mounted in an out-of-the-way location that is dry and well ventilated. Avoid mounting the module where it can be

submerged in liquids or exposed to extreme temperatures. Be sure to mount the module so that the LED is visible.

To install the GSD 20 module:

1. Once the location is chosen, place the unit. Be sure to allow enough clearance for attaching the cables. Using the module as a template,

mark the location of the four mounting holes. If needed, additional mounting holes may be drilled in the side mounting flanges of the

module.

2. Attach the GSD 20 to the mounting location using the appropriate fasteners.

3. Mount the transducer according to the instructions provided with the transducer.

4. Route the cables to the mounting location of the display unit. Use the appropriate tie-wraps, fasteners, and sealant to secure the cable

along the route and through any bulkhead or deck.

5. Once the GSD 20 module has been installed, connect the power/data and transducer cables to the appropriate receptacle.

6. Refer to the following wiring diagrams for connecting the GSD 20 to compatible Garmin units.

NOTE: You can extend the wiring of the GSD 20 power/data cable up to 100’ (30 m) total length. Use 22 AWG, 4-conductor shielded cable for data

cable and 18 AWG for power. Transducer cable extensions are available through your Garmin dealer.

3GSD 20 Sonar Module

INSTALLATION INSTRUCTIONS

WIRE

COLOR

GARMIN GSD 20

SOUNDER MODULE

BLACK

ORANGE

RED

WHITE/BLUE

BLACK

RED

WHITE/BLUE

WHITE/BROWN WHITE/BROWN

WIRE

COLOR

5 A

FUSE

ORANGE

2 A

FUSE

TO

TRANSDUCER

BATTERY

10-35 VOLTS DC

BASIC WIRING FOR THE GARMIN GSD 20 TO A SINGLE

GPSMAP 2006/2006C/2010/2010C/3005C/3006C/3010C

Notes:

1. Power and ground wires require 18 AWG. All other wires require 22 AWG. Use 4-conductor, shielded wiring for runs over 30’ (9.1 m).

2. Refer to the GPSMAP 2006/2006C/2010/2010C/3005C/3006C/3010C Installation Instructions for wiring the GPS 17 sensor and other devices.

3. For runs over 30’ (9.1 m), the drain wire must be connected to the shielding of the extension run. Do not terminate the end of the shield drain wire.

4. When multiple GPSMAP 3005C/3006C/3010C units are in use, only wire the GSD 20 to one unit. The GSD 20 information is transmitted to all

units connected to the Garmin Marnine Network.

4

GSD 20 Sonar Module

INSTALLATION INSTRUCTIONS

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BATTERY

10-35 VOLTS DC

BASIC WIRING FOR THE GARMIN GSD 20 TO A DUAL GPSMAP 2006/2006C/2010/2010C

*This diagram does not apply to the GPSMAP 3005C/3006C/3010C. Refer to Note 4 on the Single GPSMAP

2006/2006C/2010/2010C/3005/C3006C/3010C diagram.

Notes:

1. Power and ground wires require 18 AWG. All other wires require 22 AWG. Use 4-conductor, shielded wiring for runs over 30’ (9.1 m).

2. Refer to the GPSMAP 2006/2006C/2010/2010C Installation Instructions for wiring the GPS 17 sensor and other devices.

3. For runs over 30’ (9.1 m), the drain wire must be connected to the shielding of the extension run. Do not terminate the end of the shield drain wire.

4. Use unit #1 to update the GSD 20 software.

5GSD 20 Sonar Module

INSTALLATION INSTRUCTIONS

WIRE

COLOR

GARMIN GSD 20

SOUNDER MODULE

BLACK

ORANGE

RED

WHITE/BLUE

BLACK

RED

BLUE

YELLOW WHITE/BROWN

WIRE

COLOR

FUSE

1.5A

FUSE

2A

TO

TRANSDUCER

ON

OFF

SEE NOTE 3

OPTION 1

ON

OFF

SEE NOTE 3

OPTION 2

BATTERY

10-35 VOLTS DC

BASIC WIRING FOR THE GARMIN GSD 20 TO A SINGLE GPSMAP 276C/296/376C/396

Notes:

1. Power and ground wires require 18 AWG. All other wires require 22 AWG. Use 4-conductor, shielded wiring for runs

over 30’ (9.1 m).

2. For runs over 30’ (9.1 m), the drain wire must be connected to the shielding of the extension run. Do not terminate the

end of the shield drain wire.

3. The Orange wire must be pulled low (-) in order for the GSD 20 to power on.

Option 1: If the GSD 20 is wired to a circuit that is switched on the Red (+) wire, connect the Orange wire to ground.

The GSD 20 and the GPSMAP 276C/296/376C/396 turn on/off when power is applied/removed to the Red wire.

Option 2: If the Red (+) wire is applied directly to a power source, install a switch between the Orange wire and ground.

The GSD 20 turns on/off when ground is applied/removed to the Orange wire.

6

GSD 20 Sonar Module

INSTALLATION INSTRUCTIONS

BASIC WIRING FOR THE GARMIN GSD 20 TO A SINGLE GPSMAP 182/182C/192C/232

WIRE

COLOR

GARMIN GSD 20

SOUNDER MODULE

BLACK

ORANGE

RED

WHITE/BLUE

BLACK

RED

BLUE

BROWN WHITE/BROWN

WIRE

COLOR

FUSE

1.5A

FUSE

2A

TO

TRANSDUCER

ON

OFF

SEE NOTE 3

OPTION 1

BATTERY

10-35 VOLTS DC

ON

OFF

SEE NOTE 3

OPTION 2

Notes:

1. Power and ground wires require 18 AWG. All other wires require 22 AWG. Use 4-conductor, shielded wiring for runs over 30’ (9.1 m).

2. For runs over 30’ (9.1 m), the drain wire must be connected to the shielding of the extension run. Do not terminate the end of the shield

drain wire.

3. The Orange wire must be pulled low (-) in order for the GSD 20 to power on.

Option 1: If the GSD 20 is wired to a circuit that is switched on the Red (+) wire, connect the Orange wire to ground. The GSD 20 and

the GPSMAP 182/182C/192C/232 turns on/off when power is applied/removed to the Red wire.

Option 2: If the Red (+) wire is applied directly to a power source, install a switch between the Orange wire and ground. The GSD 20

turns on or off when ground is applied or removed to the Orange wire.

7GSD 20 Sonar Module

INSTALLATION INSTRUCTIONS

WIRE

COLOR

GARMIN GSD 20

SOUNDER MODULE

BLACK

ORANGEORANGE

RED

WHITE/BLUE

BLACK

RED

BLUE

BROWN WHITE/BROWN

WIRE

COLOR

FUSE

5A

FUSE

2A

TO

TRANSDUCER

BATTERY

10-35 VOLTS DC

BASIC WIRING FOR THE GARMIN GSD 20 TO A SINGLE GPSMAP 172/172C

Notes:

1. Power and ground wires require 18 AWG. All other wires require 22 AWG. Use 4-conductor, shielded wiring for runs over 30’ (9.1 m).

2. Refer to the GPSMAP 172/172C Owner’s Manual for wiring the GPS 17 sensor and other devices.

3. For runs over 30’ (9.1 m), the drain wire must be connected to the shielding of the extension run. Do not terminate the end of the shield drain wire.

8

GSD 20 Sonar Module

INSTALLATION INSTRUCTIONS

Blink Codes

Once the unit is installed, it switches on when the display unit is powered on (or the GSD remote power line is pulled low, with power applied).

The two-color (Green/Red) LED on the GSD 20 indicates the current operational status of the module. Codes are:

Code Status

Green blinking, on for 1 second, off for 1/2 second (slow blink) GSD 20 is servicing one directly wired connection and the display

device is operating properly.

The user should see sonar data on the display unit.

Green blinking, on for 1/2 second, off for 1/4 second (fast blink) GSD 20 is servicing two dirctly wired connections and the two display

devices are operating properly.

The user should see sonar data on both display units.

Red blinking, on for 1 second, off for 1/2 second (slow blink) GSD 20 is powered on but is waiting to connect to a display device. In

this state, the GSD 20 does not transmit any sonar signals and is not

sending out any sonar information to display units. If a display unit is

connected and this code persists, check the wiring.

Solid Red (no blink) Software failure - Call Garmin Product Support. If the cause is a

software error, the display unit can show the error. Power must be

cycled to clear the error.

Red blinking, on for 1/10 second, off for 1/10 second

(very fast blink)

System alarm. The display device gives a message indicating the type

of failure. After the alarm condition is fixed, power must be cycled on

the GSD 20 to clear the alarm.

9GSD 20 Sonar Module

INSTALLATION INSTRUCTIONS

Physical Specifications

Size: 6.75” L x 4.75” W x 2.00” H

(17.2cm x 12.1cm x 5.1cm)

Weight: 1.5 lbs. (.680Kg)

Case: Fully gasketed, high-impact plastic and aluminum alloy, waterproof to IEC 529-IPX-7

Temp Range: 5°F to 158°F (-15°C to 70°C)

Power

Source: 10-35 Vdc

Usage: 18 watts max.

Fuse: AGC/3AG - 2.0 Amp

Sonar

Sounder Power: 500 watts (RMS)

4000 watts (peak to peak)

Frequency: 50/200 kHz

Depth: 1500 foot max depth*

* Depth capacity is dependent on water salinity, bottom type, and other water conditions.

Data Output

Source: Proprietary Garmin data format.

© Copyright 2004, 2005 Garmin Ltd. or its subsidiaries

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 9DL, U.K.

Garmin Corporation

No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan

www.garmin.com

Part Number 190-00255-00 Rev. E