Garmin GMR 604 Open Array Antenna xHD Installation Instructions - Page 4
Mounting the Antenna, Installing the Voltage Converter Unit, Installing the Power and Network Cables
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Mounting the Antenna 1. Remove the protective cover from the pedestal wave guide. 2. Verify that the antenna wave guide is aligned with the pedestal wave guide. Slide the antenna onto the pedestal. Align the 3. Secure the antenna to the pedestal using the 8 mm hex bolts, flat waveguide faces washers, and spring washers. The 8 mm bolts should be torqued to 70 lbf-in (6 lbf-ft) (.81 kgf-m). Antenna Pedestal Installing the Voltage Converter Unit The included voltage converter unit is needed to supply a specific constant voltage to the radar. When installing the voltage converter unit, consider the following: • The voltage converter requires an input voltage of 10-40 Vdc (20-40 Vdc for the GMR 1204 and GMR 1206). • You must connect the converter to the boat battery through a 15 A slow-blow fuse. • Garmin recommends that you install the voltage converter as close as possible to the selected power source. • For optimal performance, connect the voltage converter housing to the RF ground of the vessel. Distance 9 ft. 10 in. (3 m) 16 ft. 4 in. (5 m) 21 ft. 3 in. (6.5 m) Gauge 12 AWG 10 AWG 9 AWG • If the input wires need to be extended, follow the recommendations in the wire gauge table. 26 ft. 2 in. (8 m) 8 AWG ◦◦ If the wires are extended, use the supplied heat-shrink butt connectors. Wire Gauge Table ◦◦ After the connector is crimped, heat the connector to shrink it and provide a water resistant fit. GMR 400/600/1200 xHD Voltage Converter Unit + Sample boat fuse block To radar Voltage Converter Unit To power - 15 A slow-blow fuse To RF ground Connecting the Voltage Converter to a Boat Fuse Block 10-40 Vdc (20-40 Vdc for the GMR 1204 and 1206) Installing the Power and Network Cables Route the cable as needed, based on the type of mount you are using. When installing the power and network cables, consider the following: • To ensure safety, use the appropriate tie-wraps, fasteners, and sealant to secure the cable along a route and through any bulkhead or deck. Avoid running the cable near moving objects, high-heat sources, or through doorways and bilges. • Avoid installing the cable next to or parallel to other cables, such as radio antenna lines or power cables. This is essential to avoid interference to or from other equipment. If this is not possible, shield the cable with metal conduit or a form of EMI shielding. • You may need to drill a 1 1/4 in. (31.7 mm) hole for routing the power/network cable. Garmin provides a rubber cable grommet to cover the cable installation hole. ◦◦ The grommet does NOT provide a waterproof seal. To waterproof the grommet, apply a marine sealant. ◦◦ You can purchase additional cable grommets through Garmin or a Garmin dealer. • Use the optional field-installable RJ-45 network connector (included) to create a custom-length Garmin Marine Network cable if needed (see page 8). 4 GMR 400/600/1200 xHD Installation Instructions