Mid-tech RX 400p, Руководство пользователя

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RX 400p
6-1 98-05044
R1
6 NMEA 0183 Messages
This chapter identifies the selection of valid NMEA 0183 output messages for the RX
400p receiver.
6.1 Description of NMEA 0183
NMEA 0183 is a communications standard established by the marine industry. It has
found use in a variety of electronic devices, including GPS and beacon receivers.
The National Marine Electronics Association publishes updates to the NMEA 0183
message standard. The latest NMEA 0183 standard is available through:
National Marine Electronics Association
NMEA Executive Director
P. O. Box 50040, Mobile, Alabama 36605, USA
Tel (205) 473-1793 Fax (205) 473-1669
6.2 NMEA Message Elements
NMEA 0183 messages have a common structure, consisting of a message header,
data fields, and carriage return/line feed message terminator.
Example: $XXYYY,zzz,zzz,zzz…<CR><LF>
The components of this generic NMEA message example are displayed in Table 6-1.