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A-3
A.3 Navigation Data (IEC 61162-1 Edition 1 and Edition2)
1. I/O Sentences for Channel 1
Input
BWC, BWR, DBT, DPT, GGA, GLL, MTW, MWV, RMA, RMB, RMC, VDR, VTG(*),
ZDA *: not recommended in IMO-type
2. I/O Sentences of Channel 2
Input
VBW, VHW, HDT
Output
RAOSD, RARSD (An interval of three seconds)
3. I/O Sentences of Channel 3
Output
RATTM (Every five seconds when acquiring 10 targets)
4. Sentence Description
See pages which follow.
Note: Checksum for RMA, RMB, and RMC is mandatory. Checksum for other sen-
tences is evaluated if it exists.
5. Priority
Nav data sentences below are read left to right, and in case of timeout the sentence
right of last read sentace is read. In case of multiple high priority sentences the sen-
tences having the highest priority is read. ** is read regardless of talker. Timeout is 30
seconds unless specified otherwise. Difficult time-outs for data sentences are required
by German authorities.
Position data
GPGGA>GPRMC>GPGLL>LCRMA>LCGLL>**GLL
Timeout: 30 seconds