Garmin GSD 21 Included Equipment:, Optional Transducers, INTRODUCTION

INTRODUCTION

INTRODUCTION

Thank you for choosing the Garmin GSD 21. The GSD 21 is a CANetTM compatible, remote sounder module designed to include powerful features found in other Garmin sounders, including Color Depth Control Gain (DCG®), DynacolorTM, and auto gain features technology. When used with compatible Garmin chartplotters, it provides full-featured depth sounder functions. It can interface to multiple head units, providing complete sounder control from multiple stations, including transmit frequency, range, and gain adjustments. To get successful results from your GSD 21, take time to read through this installation guide. If any items are missing, please contact your Garmin dealer immediately.

Included Equipment:

•GSD 21 Sounder Module

•6 ft (0.30 m) Power/Data Cable

•40 ft (12.19 m) CANet/Serial Extension Cable

•2 CANet Terminators

•7 3-Wire Connectors

•The GSD 21 Sounder Module Installation Instructions

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.

Mounting Holes	Transducer
	Connector
	LED Status Indicator
	Power/Data
	Connector

GSD 21 Sonar Module 1