Garmin GPS 24xd Installation manual

GPS 24XD NMEA 2000

INSTALLATION

INSTRUCTIONS

Important Safety Information

CAUTION

To avoid possible personal injury, always wear safety goggles, ear protection, and a dust mask when drilling, cutting, or sanding.

NOTICE

When drilling or cutting, always check what is on the opposite side of the surface to avoid damaging the vessel.

For the best performance and to avoid damage to your boat, read all installation instructions before proceeding. Install the device per these instructions. Use the appropriate fasteners, tools, and mounts listed, which are available at most marine dealers.

The Garmin® GPS 24xd NMEA 2000 high-sensitivity GPS antenna provides position information to your existing NMEA 2000 network. If your boat does not have a NMEA 2000 network, you will need to install one.

For more information, go to www.garmin.com.

Tools Needed

• Drill

• 3.2 mm (1/8 in.) drill bit

• 19 mm (3/4 in.) drill bit for a pole-mount cable-hole

• 1 in. (25 mm) hole saw for a surface-mount cable-hole

• Countersink bit for mounting on fiberglass

• Screws for under-deck mounting

• Screwdriver, appropriate for the screw type

• Marine sealant (optional)

• Additional NMEA 2000 network components as needed

Mounting the Antenna

• The antenna should not be mounted where it is shaded by the superstructure of the boat , a radome antenna, or the mast.

• The antenna should not be mounted near the engine or other sources of Electromagnetic Interference (EMI) .

• The antenna should not be mounted near known ferrous metal objects such as a toolbox or compass.

• A handheld compass should be used to test for magnetic interference in the area where the antenna is to be mounted. Your boat, motors, and devices must be on during the test.

If the needle on the handheld compass moves when you hold it where you intend to mount the antenna, magnetic interference is present. You must choose another location and test again.

• Mounting screws are provided with the antenna. If you use mounting hardware other than the provided screws, the hardware must be made of quality stainless steel or brass material to avoid magnetic interference with the antenna.

NOTE: Test all mounting hardware with a handheld compass to make sure no magnetic fields are present in the hardware.

• If a radar is present, the antenna should be mounted above the path of the radar mounted below the path of the radar .

• The antenna should not be mounted directly in the path of the radar .

• The antenna should not be mounted within 1 m (3 ft.) of a VHF radio antenna or the path of a radar .

. If necessary, the antenna may be

Antenna Mounting Considerations

CAUTION

Do not install or store the antenna near strong magnets, including speakers. A strong magnetic field can damage the antenna.

You can mount the antenna on a flat surface or attach it to a standard 1 in. OD, 14 threads per inch, pipe-threaded pole (not included). You can route the cable outside of the pole or through the pole. For best performance, consider these guidelines when selecting the antenna mounting location.

• To ensure the best reception, the antenna should be mounted in a location that has a clear, unobstructed view of the sky in all directions .

Testing the Mounting Location

Temporarily secure the antenna in the preferred mounting

location and test it for correct operation. If you experience interference with other electronics, move

the antenna to a different location, and test it again.

GUID-28CE8C25-CFD8-4C12-B6D0-AD9CDF4D5084 v2August 2020

Repeat steps 1–2 until you observe full or acceptable signal

strength. Permanently mount the antenna.

Surface Mounting the Antenna

NOTICE

If you are mounting the bracket on fiberglass with screws, it is recommended to use a countersink bit to drill a clearance counterbore through only the top gel-coat layer. This will help to avoid cracking in the gel-coat layer when the screws are tightened.

Before you permanently mount the antenna, you must test the mounting location for correct operation (Testing the Mounting

Location, page 1).

Using the surface-mount bracket as your mounting

template, mark the three pilot-hole locations and trace the cable-hole in the center of the bracket.

Set the surface-mount bracket aside.

Do not drill through the bracket. Drill the three 3.2 mm (1/8 in.) pilot holes.

Drill the 19 mm (3/4 in.) cable hole in the center.

Use the included M4 screws to secure the surface-mount

bracket to the mounting surface. Route the cable through the center hole, and connect it to

the antenna. Verify the large gasket is in place on the bottom of the

antenna, place the antenna on the surface-mount bracket, and twist it clockwise to lock it in place.

Secure the antenna to the mounting bracket with the included

M3 screw . Route the cable away from sources of electronic interference.

Mounting the Antenna on a Pole

Mounting the Antenna with the Cable Routed Outside the Pole

Before you permanently mount the antenna, you must test the mounting location for correct operation (Testing the Mounting

Location, page 1).

Route the cable through the pole-mount adapter , and

place the cable in the vertical slot along the base of the pole-mount adapter.

Screw the pole-mount adapter onto a standard 1 in. OD, 14

threads per inch, pipe-threaded pole (not included). Do not overtighten the adapter on the pole. Connect the cable to the antenna.

Place the antenna on the pole-mount adapter and twist it

clockwise to lock it in place. Secure the antenna to the adapter with the included M3 set

screw . With the antenna installed on the pole mount, fill the

remaining gap in the vertical cable slot with a marine sealant (optional).

Attach the pole to the boat if it is not already attached.

Route the cable away from sources of electronic interference.

Mounting the Antenna with the Cable Routed Through the Pole

Before you permanently mount the antenna, you must test the mounting location for correct operation (Testing the Mounting

Location, page 1).

Position a standard 1 in. OD, 14 threads per inch, pipe-

threaded pole (not included) in the selected location, and mark the approximate center of the pole.

Drill a hole using a 19 mm (3/4 in.) drill bit for the cable to

pass through. Fasten the pole to the boat.

Thread the pole-mount adapter onto the pole.

Do not overtighten the adapter. Route the cable through the pole and connect it to the

antenna. Place the antenna on the pole-mount adapter and twist it

clockwise to lock it in place. Secure the antenna to the adapter with the included M3 set

screw .

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