NorthStar 951X, Installation Manual

Page: 53 / 80

SECTION THREE - Interfacing
951/952 INSTALLATION MANUAL Revision B Page 43
Setting the output
format
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 menu key and the ,
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.
About NMEA 0183
and RAY 0183
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.
OUTPUT RATE
(see page 47) choose 2 to 999 seconds for the
interval at which data is sent to
the external device
NMEA 0183 WAYPOINT ID AS
(see page 47) choose NAME or NUMBER for
the identifier of waypoints sent to
the external device
NMEA 0183 CHECKSUMS
(see page 48) choose ON or OFF for compati-
bility with some older devices
OUTPUT DATUM
(see page 48) choose from a list of datums to
apply to your lat/lon coordinates
Table 5: Port setup options (continued)
Parameter Options