background image

Installing the Antenna

Before you can install the antenna on the radar, you must 

securely mount the pedestal (

Mounting the Radar

, page 2

).

1

Remove the protective cover from the waveguide on the top 

of the pedestal.

2

Align the waveguide 

À

 on the pedestal with the socket on the 

bottom of the antenna 

Á

, and slide the antenna onto the 

pedestal.

3

Secure the antenna to the pedestal using the included hex 

bolts 

Â

 and spring washers 

Ã

.

4

Torque the hex bolts to 0.81 kgf-m (70 lfb-in. [6 lbf-ft.]) to 

fasten the antenna to the pedestal without damaging the 

antenna or the mounting hardware.

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

, page 4

).

◦ Incorrectly extended runs of cable may cause the radar to 

malfunction due to insufficient power transmission.

Connecting to Power Through the Voltage Converter

 WARNING

When connecting the power cable, do not remove the in-line 

fuse holder. To prevent the possibility of injury or product 

damage caused by fire or overheating, the appropriate fuse 

must be in place as indicated in the product specifications. In 

addition, connecting the power cable without the appropriate 

fuse in place will void the product warranty.

NOTICE

Do not reuse any voltage converters from previous Garmin radar 

models, or third party voltage converters. Using any converter 

other than one included with the radar may damage the radar or 

prevent it from turning on.

Some radar models require a voltage converter unit to properly 

power the device. If your model is packaged with a voltage 

converter, it must be installed in order for your radar to function. 

If your model is not packaged with a voltage converter, connect 

the power cable directly to the boat battery (

Connecting Directly 

to Power

, page 4

).

When installing the voltage converter for an applicable radar 

model, observe these considerations.
• The voltage converter requires an input voltage of 10 to 

32 Vdc.

• It is recommended to install the voltage converter as close as 

possible to the power source.

• Connecting the power cable for the voltage converter directly 

to the battery is recommended. If it is necessary to extend 

the cable, the appropriate gauge of wire must be used for the 

length of the extension (

Power Cable Extensions

, page 4

).

Item

Description

À

To the Garmin Marine Network

Á

7.5 A fuse holder

Â

Red (+)

Ã

Black (-)

Ä

To the boat battery (10 to 32 Vdc)
Water ground connection

1

Route the power cable to the radar and the voltage converter.

2

Use crimp connectors and heat-shrink tubing to connect the 

power cable to the voltage converter.
The radar power cable contains a 7.5 A fuse which should 

not be removed when connecting to the voltage converter.

3

Connect the voltage converter to the boat battery through a 

15 A, slow-blow fuse (not included).
The 15 A fuse (not included) between the voltage converter 

and battery is in addition to the 7.5 A fuse included in the 

radar power cable. Both fuses must be in place for the radar 

to function properly.

GMR 420/620/1220/2520 xHD2 Series Installation Instructions

3

Содержание GMR 420 xHD 2 Series

Страница 1: ...Drill and 15 0 mm 19 32 in drill bit 17 mm 21 32 in wrench and torque wrench A length of 3 31 mm 12 AWG copper wire to ground the radar housing and voltage converter if applicable Marine sealant Moun...

Страница 2: ...e bottom of the pedestal Mounting the Radar Before you can mount the radar you must first select a mounting location and prepare the mounting surface and the radar Preparing the Surface and the Radar...

Страница 3: ...dar to malfunction due to insufficient power transmission Connecting to Power Through the Voltage Converter WARNING When connecting the power cable do not remove the in line fuse holder To prevent the...

Страница 4: ...re to water ground location and to the voltage converter 7 Loosen a screw on one corner of the voltage converter and secure the copper wire to the screw 8 Coat the screw and wire on the voltage conver...

Страница 5: ...the radar scanner does not align with the bow stern axis Measuring the Potential Front of Boat Offset The front of boat offset compensates for the physical location of the radar scanner on a boat if...

Страница 6: ...cable length 15 m 49 ft 3 in Antenna rotation speed 24 rpm and 48 rpm Max wind load 80 kn Temperature range From 15 to 70 C 5 to 158 F Humidity 95 at 35 C 95 F Water resistance IEC 60529 IPX6 protect...

Страница 7: ...the table provided in the Power Cable Extensions section of these instructions to make sure the correct wire gauge is used Power Cable Extensions page 4 If the radar uses a voltage converter it may b...

Страница 8: ...2014 Garmin Ltd or its subsidiaries www garmin com support...

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