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. A full 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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