Samyung ENC SI-30A, Manual Instruction

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6 0
!--VDO ,x ,x ,x ,a ,s—s ,x *hh<CR><LF>
① ② ③ ④ ⑤ ⑥
① total number of sentences needed to transfer message
② sentence number
③ sequential message identifier
④ AIS Channel (‘A’ or ‘B’)
⑤ encapsulated ITU-R M.1371 radio message
⑥ number of fill-bits
The transponder outputs one VDO sentence every second in addition to echoing all
transmitted VDO sentences as they are transmitted in order to provide frequent updates to
all connected presentation devices. VDO sentences which have also been transmitted contain
the appropriate AIS channel indicator whereas VDO sentences that have not been transmitted
contain a NULL field for the channel indicator.
6-3-29 VSD – AIS voyage static data
This sentence may be output by the transponder in response to a query.
$--VSD ,x.x ,x.x ,x.x ,c—c ,hhmmss.ss ,xx ,xx ,x.x ,x.x *hh<CR><LF>
① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨
① type of ship and cargo category ② maximum present static draught
③ persons on-board ④ destination
⑤ estimated UTC of arrival at destination ⑥ estimated day of arrival at destination
⑦ estimated month of arrival at destination ⑧ navigational status
⑨ regional application flags
6-3-30 VTG – course over ground and ground speed
This sentence contains the actual course and speed relative to the ground.
$--VTG ,x.x,T ,x.x,M ,x.x,N ,x.x,K ,a *hh<CR><LF>
① ② ③ ④ ⑤
① course over ground, degrees true ② course over ground, degrees magnetic (ignored)
③ speed over ground, knots ④ speed over ground, km/h (ignored)
⑤ mode indicator
Note that RMC has priority over VTG.