Raymarine GPS navigation User Manual download pdf (Page 13)

accepting position data in the NMEA format. Please refer to the Raystar 108

or Raynav 508/508A instruction manuals for details on making this type of

interconnection.

Data Input

One feature of the NAV398 is to transfer the

waypoint

and route memory

contents of the internal memory to external computer files and to re-load the

memory from the computer.

Downloading of files occurs through the Data Output connections (Green

and Yellow wires). To Upload files into the NAV unit the Data Input wires

of the power cable assembly should be used. Make connections as follows:

DATAIN + = WHITE

DATA IN

= BROWN

The data Input must be in the NMEA 0 183 format using the WPL and RTE

sentences.

2.3.4 Ground Connection

One important need in any installation is to obtain the cleanest, noise-free

signals possible, for measuring and calculating your position. Part of this

requirement can be met by assuring a proper connection from your NAV unit

to the ship’s ground system. The ground system provides both a completion

of the signal path for the sensor and a drain for noise sources.

There are two separate wires labeled “GROUND” in the cable assembly.

Both the WHITE and BROWN wires should be connected to the nearest

connection point of the ship’s

Rl?

ground system.

Normally, on a steel hull boat, a good clean connection to the ship’s hull

makes a sufficient ground. On Fiberglas or wood hull vessels, connection to

a ground plate or to the engine block or other bonded groundwork should

provide acceptable grounding.

INSTALLATION 2-7

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Raymarine GPS navigation User Manual Page 13