Installation Instructions
Page 3
... larger the cone angle, the larger the coverage area at www.garmin.com. When used with compatible Garmin chartplotters, it provides full-featured depth sounder functions. Mounting Holes Power/Data Connector LED Status Indicator Transducer Connector GSD 21 Sonar Module 1 The GSD 21 is a CANetTM compatible, remote sounder module designed to the operation of your unit. Included Equipment...
... larger the cone angle, the larger the coverage area at www.garmin.com. When used with compatible Garmin chartplotters, it provides full-featured depth sounder functions. Mounting Holes Power/Data Connector LED Status Indicator Transducer Connector GSD 21 Sonar Module 1 The GSD 21 is a CANetTM compatible, remote sounder module designed to the operation of your unit. Included Equipment...
Installation Instructions
Page 4
...can lower the available amperage, causing the chartplotter and/or GSD 21 to shut off ) for extended periods of the module. 2. Doing so might damage the GSD 21. 2 GSD 21 Sonar Module NOTE: When using the chartplotter and GSD 21 on . Use the CANet Extension Cable or 22 AWG... length using appropriate fasteners. 3. INSTALLATION INSTRUCTIONS INSTALLATION INSTRUCTIONS The GSD 21 must be properly installed according to the following CANet and serial wiring diagrams for connecting the GSD 21 to compatible Garmin units. Route the cables according to the CANet or Serial ...
...can lower the available amperage, causing the chartplotter and/or GSD 21 to shut off ) for extended periods of the module. 2. Doing so might damage the GSD 21. 2 GSD 21 Sonar Module NOTE: When using the chartplotter and GSD 21 on . Use the CANet Extension Cable or 22 AWG... length using appropriate fasteners. 3. INSTALLATION INSTRUCTIONS INSTALLATION INSTRUCTIONS The GSD 21 must be properly installed according to the following CANet and serial wiring diagrams for connecting the GSD 21 to compatible Garmin units. Route the cables according to the CANet or Serial ...
Installation Instructions
Page 5
..., reconnect all wires according to the chartplotter's installation instructions for wiring the GPS 17 sensor and other devices. 5. The CANet Extension Cable Black wire is fully depressed into the connector. GSD 21 Sonar Module To Sounder Green White CANet Wiring for the Garmin GSD 21 CANet Terminator See the CANet Terminator Connection Diagram Below CANet Terminator GREEN WHITE...
..., reconnect all wires according to the chartplotter's installation instructions for wiring the GPS 17 sensor and other devices. 5. The CANet Extension Cable Black wire is fully depressed into the connector. GSD 21 Sonar Module To Sounder Green White CANet Wiring for the Garmin GSD 21 CANet Terminator See the CANet Terminator Connection Diagram Below CANet Terminator GREEN WHITE...
Installation Instructions
Page 6
Ground the drain wire at the display unit. GSD 21 Sonar Module Refer to the chartplotter's specific Installation Instructions for the Garmin GSD 21 to 100 ft (30 m) total length. INSTALLATION INSTRUCTIONS 4 Serial Wiring for wiring the GPS 17 sensor and other devices. 4. Use the CANet Extension Cable or 22 AWG, 4-conductor shielded cable for data connections and...
Ground the drain wire at the display unit. GSD 21 Sonar Module Refer to the chartplotter's specific Installation Instructions for the Garmin GSD 21 to 100 ft (30 m) total length. INSTALLATION INSTRUCTIONS 4 Serial Wiring for wiring the GPS 17 sensor and other devices. 4. Use the CANet Extension Cable or 22 AWG, 4-conductor shielded cable for data connections and...
Installation Instructions
Page 7
... connections and 18 AWG for wiring the GPS 17 sensor and other devices. 4. Ground the drain wire at the display unit. When crimping the 3-wire connector, use a standard pair of the GSD 21 power/data cable up to 100 ft (30 m) total length. GSD 21 Sonar Module Serial Wiring for the Garmin GSD 21 to the chartplotter's specific Installation...
... connections and 18 AWG for wiring the GPS 17 sensor and other devices. 4. Ground the drain wire at the display unit. When crimping the 3-wire connector, use a standard pair of the GSD 21 power/data cable up to 100 ft (30 m) total length. GSD 21 Sonar Module Serial Wiring for the Garmin GSD 21 to the chartplotter's specific Installation...
Installation Instructions
Page 8
... power is applied or removed form the Red wire. GSD 21 Sonar Module Ground the drain wire at the display unit. The GSD 21 turns on . The GSD 21 and the GPSMAP 276C/296/376C/396 turn on or off when ground is switched on the sonar unit. 3. INSTALLATION INSTRUCTIONS ON OFF 6 Serial Wiring for the Garmin GSD 21 to ground.
... power is applied or removed form the Red wire. GSD 21 Sonar Module Ground the drain wire at the display unit. The GSD 21 turns on . The GSD 21 and the GPSMAP 276C/296/376C/396 turn on or off when ground is switched on the sonar unit. 3. INSTALLATION INSTRUCTIONS ON OFF 6 Serial Wiring for the Garmin GSD 21 to ground.
Installation Instructions
Page 9
... the CANet Extension Cable or 22 AWG, 4-conductor shielded cable for data connections and 18 AWG for the Garmin GSD 21 to a circuit that is switched on the sonar unit. 3. Option 1: If the GSD 21 is wired to a Single GPSMAP 182/182C/192C/232/292/392/492 INSTALLATION INSTRUCTIONS ON OFF FUSE 3A...BLACK WHITE/BLUE WHITE/BROWN ORANGE BATTERY 10-33 VOLTS DC SEE NOTE 3 OPTION 2 GARMIN GSD 21 SOUNDER MODULE TO TRANSDUCER Notes: 1. Option 2: If the Red (+) wire is fully depressed into the connector. 7 The GSD 21 turns on or off when power is applied or removed from the Red wire. Do ...
... the CANet Extension Cable or 22 AWG, 4-conductor shielded cable for data connections and 18 AWG for the Garmin GSD 21 to a circuit that is switched on the sonar unit. 3. Option 1: If the GSD 21 is wired to a Single GPSMAP 182/182C/192C/232/292/392/492 INSTALLATION INSTRUCTIONS ON OFF FUSE 3A...BLACK WHITE/BLUE WHITE/BROWN ORANGE BATTERY 10-33 VOLTS DC SEE NOTE 3 OPTION 2 GARMIN GSD 21 SOUNDER MODULE TO TRANSDUCER Notes: 1. Option 2: If the Red (+) wire is fully depressed into the connector. 7 The GSD 21 turns on or off when power is applied or removed from the Red wire. Do ...
Installation Instructions
Page 10
... GPS 17 sensor and other devices. 4. When crimping the 3-wire connector, use a standard pair of the GSD 21 power/data cable up to a Single GPSMAP 172/172C FUSE 2A WIRE COLOR RED BLACK BLUE BROWN ORANGE WIRE COLOR RED FUSE 2A BLACK WHITE/BLUE WHITE/BROWN ORANGE GARMIN GSD 21 ...SOUNDER MODULE TO TRANSDUCER BATTERY 10-35 VOLTS DC Notes: 1. INSTALLATION INSTRUCTIONS 8 Serial Wiring for the Garmin GSD 21 to 100 ft (30 m) total length. GSD 21 Sonar Module You can extend the serial/power wiring of pliers and...
... GPS 17 sensor and other devices. 4. When crimping the 3-wire connector, use a standard pair of the GSD 21 power/data cable up to a Single GPSMAP 172/172C FUSE 2A WIRE COLOR RED BLACK BLUE BROWN ORANGE WIRE COLOR RED FUSE 2A BLACK WHITE/BLUE WHITE/BROWN ORANGE GARMIN GSD 21 ...SOUNDER MODULE TO TRANSDUCER BATTERY 10-35 VOLTS DC Notes: 1. INSTALLATION INSTRUCTIONS 8 Serial Wiring for the Garmin GSD 21 to 100 ft (30 m) total length. GSD 21 Sonar Module You can extend the serial/power wiring of pliers and...
Installation Instructions
Page 11
...Garmin Product Support. GSD 21 Sonar Module 9 System alarm. The display device gives a message indicating the type of the module. INSTALLATION INSTRUCTIONS Blink Codes When the unit is installed, it switches on when the display unit is powered on (or the GSD remote power line is connected and this state, the GSD 21... does not transmit any sonar signals and is not sending out any sonar information to display units. If the cause is fixed, power ...
...Garmin Product Support. GSD 21 Sonar Module 9 System alarm. The display device gives a message indicating the type of the module. INSTALLATION INSTRUCTIONS Blink Codes When the unit is installed, it switches on when the display unit is powered on (or the GSD remote power line is connected and this state, the GSD 21... does not transmit any sonar signals and is not sending out any sonar information to display units. If the cause is fixed, power ...
Installation Instructions
Page 12
Data Output Source: Proprietary Garmin data format over CANet or Serial 10 GSD 21 Sonar Module INSTALLATION INSTRUCTIONS SPECIFICATIONS Physical Size: 6.75" L x 4.75" W x 2.00" H (17.2 cm x 12.1 cm x 5.1 cm) Weight: 1.5 lbs. (.680Kg) Case: Fully gasketed, high-impact ...capacity is dependent on water salinity, bottom type, and other water conditions. Fuse: AGC/3AG - 2.0 Amp Steering Compass Safe Distance: 3.95" (10.00 cm) Sonar Sounder Power: 500 watts (RMS) dual frequency, 400 watts (RMS) dual beam 4,000 watts (peak to 70°C) Electrical Source: 10-35 Vdc Usage: ...
Data Output Source: Proprietary Garmin data format over CANet or Serial 10 GSD 21 Sonar Module INSTALLATION INSTRUCTIONS SPECIFICATIONS Physical Size: 6.75" L x 4.75" W x 2.00" H (17.2 cm x 12.1 cm x 5.1 cm) Weight: 1.5 lbs. (.680Kg) Case: Fully gasketed, high-impact ...capacity is dependent on water salinity, bottom type, and other water conditions. Fuse: AGC/3AG - 2.0 Amp Steering Compass Safe Distance: 3.95" (10.00 cm) Sonar Sounder Power: 500 watts (RMS) dual frequency, 400 watts (RMS) dual beam 4,000 watts (peak to 70°C) Electrical Source: 10-35 Vdc Usage: ...