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2-8 Installation
2.4.3 NMEA Data
The RAY215 accepts NMEA 0183 data from a position determining device
(GPS, etc.) to provide the Latitude and Longitude position information
that is transmitted during a DSC Distress Call.
Connect the input(s) of the positioning device to the blue (NMEA+) and
purple (NMEA-) wires in the Power/Optional Speaker/NMEA cable.
An example of how to connect the NMEA cables and power supply using
a suitable connector block is shown in the diagram below. For specific
instructions how to connect your particular GPS, please refer to the
handbook that came with that device.
Note: For non-differential GPS, all return connections (-) must be tied to
a common ground reference.
+12 V
0V
+ NMEA Data (blue)
-- NMEA Data (purple)
Red
Black
Yellow
Figure 2-5 GPS Connections
2.4.4 Antenna Connections
Your coaxial VHF antenna cable connects to the RAY215 antenna cable
on the rear panel using a PL259 VHF type connector. Your VHF antenna
cable length can be critical to performance. If you are uncertain, contact a
professional installer or call Raymarine Product Support department. If a
longer cable length is required, RG-58 (50 ohm) coaxial cable or equivalent
cable can be used for runs up to a maximum of 50 feet. If the distance
required is even greater, Raymarine recommends using low loss RG-213
or equivalent cable for the entire run to avoid excessive losses in power
output.
If the antenna RF connector is likely to be exposed to the marine
environment, a protective coating of grease (Dow Corning DC-4 or similar)
can be applied to the connector before connecting it to the radio. Any
other extensions or adapters in the cable run should also be protected by
silicon grease and then wrapped with a waterproofing tape.