Garmin GSD-20 User Manual

GSD 20

Sounder

Module

installation instructions

© Copyright 2004, 2005 Garmin Ltd. or its subsidiaries
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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 WARRANTIESAND REMEDIES CONTAINED HEREINARE EXCLUSIVEAND IN LIEU OFALL OTHER WARRANTIES EXPRESS OR IMPLIED OR STATUTORY, INCLUDINGANY LIABILITYARISING UNDERANYWARRANTY OF MERCHANTABILITY OR FITNESS FORAPARTICULAR PURPOSE, STATUTORY OR OTHERWISE. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, WHICH MAYVARY FROM STATE TO STATE.

IN NO EVENT SHALL GARMIN BE LIABLE FORANY INCIDENTAL, SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER RESULTING FROM THE USE, MISUSE, OR INABILITYTO 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 REMEDYSHALL BE YOUR SOLEAND EXCLUSIVE REMEDY FORANY 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 RMAtracking 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.Acopy 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

INTRODUCTION

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.Afull list of transducers can be found at www.garmin.com.

Power/Data	Mounting Holes
Connector

LED Status Indicator

Transducer

Connector

GSD 20 Sonar Module

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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.

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GSD 20 Sonar Module