Samyung ENC SI-30A, Manual Instruction

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5 4
⑤ Altitude offset, m ⑥ Reference datum
Note that the only datum supported by AIS is WGS84. The DTM sentence must be sent to
the transponder at a frequency of more than once every 30 seconds otherwise any positional
information sentences (eg GLL, GNS. RMC and GGA) will be ignored.
6-3-10 GBS – GNS satellite fault detection
This message is used to support receiver autonomous integrity monitoring (RAIM).
$--GBS ,hhmmss.ss ,x.x ,x.x ,x.x ,xx ,x.x ,x.x ,x.x ,*hh<CR><LF>
① ② ③ ④ ⑤ ⑥ ⑦ ⑧
① UTC time of GGA or GNS fix associated with this sentence
② Expected error in attitude
③ Expected error in longitude
④ Expected error in altitude ⑤ ID number of most likely failed satellite
⑥ Probability of missed detection for most likely failed satellite
⑦ Estimate of bias on most likely failed satellite
⑧ Standard deviation of bias estimate
6-3-11 GGA – Global positioning system (GPS) fix data
Time, position and fix-related data for a GPS receiver.
$--GGA ,hhmmss.ss ,IIII.II,a ,yyyyy.yy,a ,x ,xx ,x.x ,x.x ,M ,x.x ,M ,x.x ,xxxx *hh<CR><LF>
① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ ⑪ ⑫
① UTC of position ② Latitude N/S
③ Longitude E/W ④ GPS quality indicator
⑤ Number of satellites in use ⑥ Horizontal dilution of precision
⑦ Antenna altitude above/below mean sea level (geoid)
⑧ Units of antenna altitude, m
⑨ Geoidal separation
⑩ Units of geoidal separation, m ⑪ Age of differential GPS data
⑫ Differential reference station ID
6-3-12 GLL – geographic position
This sentence is a primary source of position information for the transponder when
connected to a functional GNSS system. In the absence of GNS sentences, longitude and
latitude information may also be obtained from GNS, GGA or RMC sentences.
$--GLL ,llll.ll,a ,yyyyy.yy,a ,hhmmss.ss ,A ,a *hh<CR><LF>
① ② ③ ④ ⑤
① latitude, N/S ② longitude, E/W
③ UTC of position ④ status (‘A’ -> use mode flag; ‘V’ -> use position as default)
⑤ mode indicator (‘A’, ‘D’, ‘E’, ‘M’ -> used; ‘N’ -> invalid)