background image

center of the radome 

Â

, and the second option is offset 

towards the back 

Ã

 to move the radar further away from the 

mast.

• The device should be mounted away from heat sources such 

as smoke stacks and lights.

• The device should be mounted at a different level than 

horizontal spreaders and mast crosstrees.

• To avoid interference with a magnetic compass, the device 

should not be mounted closer to a compass than the 

compass-safe distance value listed in the product 

specifications.

• Other electronics and cables should be mounted more than 

2 m (6 ½ ft.) from the radar beam path.

• GPS antennas should be either above or below the radar 

beam path.

• The device should be mounted at least 1 m (40 in.) from any 

transmitting equipment.

• The device should be mounted at least 1 m (40 in.) away 

from cables carrying radio signals such as VHF radios, 

cables, and antennas.
For Single Side Band (SSB) radios, increase the distance to 

2 m (6 ½ ft.).

Cable Considerations

It may be necessary to drill 31.7 mm (1 ¼ in.) holes for routing 

the power or network cable. The provided rubber cable grommet 

can be used to cover a cable installation hole.
• The grommet does NOT provide a waterproof seal. To make 

the grommet waterproof, marine sealant must be applied.

• If needed, the grommet can be trimmed to route both the 

power and the network cable through the same hole.

• Additional cable grommets can be purchased from Garmin or 

a Garmin dealer.

When installing the power and network cables, you should 

observe these considerations.
• Cutting the Garmin Marine Network cable is not 

recommended, but a field install kit can be purchased from 

Garmin or a Garmin dealer if cutting the network cable is 

necessary.

• To ensure safety, appropriate tie-wraps, fasteners, and 

sealant should be used to secure the cable along the route 

and through any bulkheads or the deck.

• Cables should not be run near moving objects and high-heat 

sources or through doorways and bilges.

• To avoid interference with other equipment, power and 

network cables should not be run next to or parallel to other 

cables, such as radio antenna lines or power cables. If this is 

not possible, the cables should be shielded with metal 

conduit or a form of EMI shielding.

• The power cable should be installed as close to the battery 

source as possible.

◦ If it is necessary to extend the power cable, the 

appropriate gauge of wire must be used (

Power Cable 

Extensions

).

◦ Incorrectly extended runs of cable may cause the radar to 

malfunction due to insufficient power transmission.

Mounting the Radar

Before you mount the radar, you must review the mounting 

location considerations and select a mounting location.

NOTE: 

The supplied M8 x 1.25 x 60 threaded rods can be used 

on mounting thicknesses of 5 to 30 mm (

3

/

16

 to 1 

3

/

16

 in.) 

(recommended). For surfaces over 30 mm (1 

3

/

16

 in.), use longer 

threaded rods.

1

If you are not installing the device on a pre-drilled Garmin-

compatible radar mount, use the included mounting template 

to drill four 9.5 mm (

3

/

8

 in.) mounting holes.

2

Install the locking ring and o-ring on the end of the Garmin 

Marine Network cable.

3

Connect the power cable to the power port 

À

 and the 

network cable to the network port 

Á

.

4

Press the cables into any of the guide grooves 

Â

 on the 

bottom of the case, and secure them using a cable hold-

down plate 

Ã

.

The cables should be bent or twisted as little as possible.

5

Position the radome on the mounting surface with the 

triangular mark on the case aligned to the front of the vessel.

6

Apply the included anti-seize compound to the threads of the 

four M8 x 1.25 x 60 threaded rods.

7

Insert the four threaded rods into the mounting holes on the 

bottom of the radome.
Up to 50 mm (2 in.) of the threaded rods may extend below 

the radome.

8

Apply a bead of marine sealant on the mounting surface 

around each mounting hole.

9

Fasten the radome 

Ä

 to the mounting surface 

Å

 using the 

threaded rods 

Æ

, flat washers 

Ç

, spring washers 

È

, and hex 

nuts 

É

.

2

Summary of Contents for GMR 18 xHD

Page 1: ...ard If so follow the instructions provided with the card If a software update memory card is not included you must copy the software update to a memory card 1 Insert a memory card into the card slot on the computer 2 Go to www garmin com support software marine html 3 Select Download next to Garmin Marine Network with SD card 4 Read and agree to the terms 5 Select Download 6 Select Run 7 Select th...

Page 2: ...ts and high heat sources or through doorways and bilges To avoid interference with other equipment power and network cables should not be run next to or parallel to other cables such as radio antenna lines or power cables If this is not possible the cables should be shielded with metal conduit or a form of EMI shielding The power cable should be installed as close to the battery source as possible...

Page 3: ... cable to the port labeled RADAR If the device is compatible with the Garmin Marine Network connect the network cable to the port labeled NETWORK Radar Operation All functions of the Garmin radome are controlled with your Garmin chartplotter See the Radar section of your chartplotter s manual for operating instructions To download the latest manual go to www garmin com support Measuring the Potent...

Page 4: ...etwork The device software may not be up to date Update the software on the device or on the Garmin Marine Network The network cable may not be connected correctly to the device or to the Garmin Marine Network Check all connections If a field installable network connector was used it may have been installed improperly Check the connector The status LED is located on the product label and can help ...

Reviews: