NorthStar 951X Installation Manual page 53

Setting the output
format
About NMEA 0183
and RAY 0183
951/952 INSTALLATION MANUAL Revision B
Table 5: Port setup options (continued)
Parameter
OUTPUT RATE
(see page 47)
NMEA 0183 WAYPOINT ID AS
(see page 47)
NMEA 0183 CHECKSUMS
(see page 48)
OUTPUT DATUM
(see page 48)
The unit outputs navigation data in any of several standard formats as
required by the receiving, or "listener," device. Highlight the OUTPUT
FORMAT option, then press the (',7 menu key and the &85625 3$',
and you'll find the following choices available: NMEA 0180, 0183 V2.1,
DATAMARINE CDX, 0183 RAY and NONE.
•
NMEA 0180 is an infrequently used format, developed in the late
1970's, required by certain older autopilots.
•
NMEA 0183 VERSION 2.1 is a general-use interface output format
used by most autopilots, radars, plotters, and other equipment. The
NMEA 0183 Version 1.5 sentences (BWC, GLL, and RNN) enable the
952X to be backward-compatible with marine equipment previously
designed for this earlier version of 0183. For details on using the
0183 format, see "About NMEA 0183 and RAY 0183" starting on page
43.
• DATAMARINE CDX is required by Datamarine's cross-track-error
indicators, the latest of which display distance and bearing to the
waypoint.
•
0183 RAY is used when transmitting/receiving position information
to or from Raytheon equipment. It uses Raytheon's non-standard
NMEA 0183 checksum, where, on output, the checksum isn't
included, and on input to the 951/952, the checksum is ignored.
(Note: With the checksum ignored on input, it is possible that the
unit may receive contaminated NMEA data when connected to an
external Raytheon loran.) Format is supported on Port 1 and Port 2.
The NONE setting is used when the unit isn't connected to an exter-
•
nal device.
NMEA 0183 enables GPS and loran navigators, for example, to "talk" to
plotters, radars, charting instruments, and other electronics, by means of
a common language.
SECTION THREE - Interfacing
Options
choose 2 to 999 seconds for the
interval at which data is sent to
the external device
choose NAME or NUMBER for
the identifier of waypoints sent to
the external device
choose ON or OFF for compati-
bility with some older devices
choose from a list of datums to
apply to your lat/lon coordinates
Page 43