JRC JHS-183 - Page 22

CONFIGURATION AND SPECIFICATIONS
1-10
(2.5.9) DSC – Digital selective calling information
$ --DSC,xx,xxxxxxxxxx,xx,xx,xx,x.x,x.x,xxxxxxxxxx,xx,a,a*hh<CR><LF>
Expansion indicator
Acknowledgement
Nature of distress
MMSI of ship in distress
Time or Tel. No.
Position or Channel/frequency
Type of communication or second telecommand
Nature of distress or first telecommand
Category
Address
Format specifier
(2.5.10) DSI – DSC transponder initialize
Expansion indicator
Command set ‘n’
$--DSI,x,x,xxxxxxxxxx,xxx,xx,xxxxxxxxxxxxxxxxxxxxxx,xx,c--c,.....,xx,c--c,a*hh<CR><LF>
Command set ‘1’
Geographical area, 0,01 min
Vessel type
Vessel course, degrees true
Vessel MMSI
Message number
Total number of messages
(2.5.11) DSR – DSC transponder response
$--DSR,x,x,xxxxxxxxxx,xx,c--c,......,xx,c--c,a*hh<CR><LF>
Expansion indicator
Data Set ’n’
Additional data sets
Data set ‘1’
Vessel MMSI
Message number
Total number of messages
(2.5.12) DTM – Datum reference
$--DTM,ccc,a,x.x,a,x.x,a,x.x,ccc*hh<CR><LF>
Reference datum WGS84 = W84
Altitude offset, m WGS72 = W72
Lon offset, min, E/W SGS85 = S85
Lat offset, min, N/S PE90 = P90
Local datum subdivision code
Local datum: WGS84 = W84
WGS72 = W72
SGS85 = S85
PE90 = P90
User defined = 999
IHO datum code