Garmin GSD 25 Installation Instructions - Page 2

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Install the locking rings on the marine network and power

cables.

Connect the bare-wire end of the power cable to a 12 Vdc

power source and to ground.

Align the notch on the end of the power cable with the power

port on the device, and press the cable into place.

Tighten the locking ring.

Select an option:

• If your boat is equipped with a GMS

expander, connect the network cable to an available port

on the GMS 10.

• If your boat is not equipped with a GMS 10 network port

expander, connect the network cable directly to the

network port on your chartplotter.

Cable Routing Grommets

When routing cables through your boat, it may be necessary to

drill holes to route the cables. Cable routing grommets can be

used to cover cable installation holes. The grommets do not

create a waterproof seal. If necessary, apply a marine sealant

after installation to weatherproof around the grommet and the

cable. You can purchase grommets from your Garmin dealer or

directly from Garmin at www.garmin.com.

Installation Diagram

You can use this diagram to identify the connection points from

your sounder to the network, power, and transducer.

Item

Description

Chartplotter

GSD 25

Power Source

Transducer

Blink Codes

After the sounder is installed, it turns on when the chartplotter is

turned on. The two-color (green and red) status LED on the

sounder indicates its operational status.

Garmin

and the Garmin logo are trademarks of Garmin Ltd. or its subsidiaries, registered in the USA and other countries. GSD

used without the express permission of Garmin.

™

10 network port

LED

State

Status

Color

Green

Slow blink

The sounder is connected to a chartplotter

and is operating properly. You should see

sonar data on the chartplotter.

Red

Slow blink

The sounder is turned on, but is not

connected to a chartplotter, or is waiting to

connect to a chartplotter. If the sounder is

connected to the chartplotter and this code

persists, check the wiring connections.

Red/

Slow blink

The sounder is in test mode.

Green

Red

Rapid blink

System error. The chartplotter displays a

sequence

message indicating the type of failure. When

the error condition is fixed, the sounder must

be completely disconnected from and

reconnected to its power source to clear the

error.

Red

Solid

The sounder has a hardware failure. Contact

Garmin Product Support for assistance.

Specifications

Specification

Measurement

Size

W × H × D: 251 x 66 x 192 mm (9.9 x 2.6 x

7.6 in.)

Weight

771 g (1.7 lb.)

Case material

Fully gasketed, polycarbonate plastic

Water rating*

IEC 60529 IPX7

Temperature range

From -15° to 70°C (from 5° to 158°F)

Power input

From 10 to 35 Vdc

Power usage

27 W maximum

Fuse

4.0 A

Compass safe

30 cm (11.8 in.)

distance

Transmit power

1 kW

(RMS)**

Frequency

Traditional sonar: 50/77/83 kHz

Single channel and dual channel CHIRP: 40 kHz

to 250 kHz

SideVü/DownVü: CHIRP 455/800 kHz and

260/455 kHz

Depth***

Traditional: 1524 m (5000 ft.); DownVü: 305 m

(1000 ft.); SideVü: 229 m (750 ft.) left and right.

Data output

Garmin Marine Network

*The device withstands incidental exposure to water of up to 1 m

for up to 30 min. For more information, go to

/waterrating.

**Dependent upon transducer rating and depth

***Maximum depth, dependent upon transducer, water salinity,

bottom type, and other water conditions.

™

is a trademark of Garmin Ltd. or its subsidiaries. These trademarks may not be