Furuno NX-700B manual Output data description NRX New Navtex received message

4. INSTALLATION

Output data description

NRX: New NAVTEX received message

New NAVTEX message to follow in ASCII format

$NXNRX,xxxx,x,x,x,xx,xx,xxxx,hhmmss,x.x,n--n*hh<CR><LF>

encapsulated message error rate % (xx.x)

UTC of receipt of message year

month (1-12) day (0-31)

freq ('490', '518' or '4209')

number of lines in message (1 to 999) line number (1 to 999)

message identifier (B1B2B3B4)

The first NRX sentence transmitted for a particular NAVTEX message shall contain valid data for all fields. For subsequent NRX sentences encapsulating a NAVTEX message, all fields apart from 'message identifier', 'line number' and 'encapsulated message' are optional. If UTC time or date are not known then the fields are NULL.

Example usage:

$NXNRX,TA21,1,4,518,10,01,2005,102000,2.2,291600 UTC JAN =*hh $NXNRX,TA21,2,4,,,,,,,OOSTENDERADIO - INFO 37/04 =*hh $NXNRX,TA21,3,4,,,,,,,WESTHINDER ANCHORAGE, ANCHOR LOST IN*hh $NXNRX,TA21,4,4,,,,,,,POSITION 51-24.94N 002-40.02E.+*hh

Example usage when no UTC is available to the equipment:

$NXNRX,TA21,1,4,518,,,,,2.2, TEST MESSAGE*hh

Where the NAVTEX message contains reserved characters as defined in IEC 61162-1, then these shall be handled by using ASCII 'escape code' :

c) Reserved character			ASCII escape code
d) <CR>			^0D
e) <LF>			^0A
f)	$	^24
g) *		^2A
h) ,		^2C
i)	!	^21
j)	\	^5C
k) ^		^5E
l)	~	^7E

4-19