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Page 118 9 — Installation and Interfacing
9 — Installation and Interfacing9 — Installation and Interfacing
9 — Installation and Interfacing Rev. D
input to the 941X, the checksum is ignored. (It should be noted that, with
the checksum ignored on input, there is a possibility of the 941X receiv-
ing contaminated NMEA data when it is connected to an external Ray-
theon loran.) Format is supported on
PORT 1
and
PORT 2
.
The setting NONE
NONENONE
NONE is used when the 941X is not connected to an external
device.
(PORT 1 / PORT 2 SETUP)
(PORT 1 / PORT 2 SETUP)(PORT 1 / PORT 2 SETUP)
(PORT 1 / PORT 2 SETUP)
NMEA 0183
NMEA 0183NMEA 0183
NMEA 0183 is perhaps the most widely-accepted standard of data
transfer used in marine electronics devices today. It enables GPS and lo-
ran navigators, for instance, to “talk” to plotters, radars, charting in-
struments and other electronics by means of a common “language.”
When either NMEA 0183 or RAY 0183 is selected as the output format
(after pressing the
EDIT
menu key) and
ENTER
is pressed, a screen is
displayed showing all of the available NMEA 0183 sentences that will be
output by the 941X.
Some devices cannot handle all of these sentences, so you may use this
screen to customize the output by turning individual sentences ON or
OFF. In general, you might want to turn ON only those sentences used
by the particular equipment to which you are interfacing the 941X. (See
Table 4 on the next page for a listing of NMEA 0183 sentence identifier
meanings.)
To modify the 941X’s NMEA 0183 sentence output format, follow the
above steps to display the 0183 sentences. Three-letter abbreviations
identify each sentence and are listed alphabetically. The sentences that
NMEA 0183 and
RAY 0183
sentences
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