Raymarine NMEA Multiplexer Especificações descarregar pdf (Página 31)

Translated SeaTalk datagrams

When the SeaTalk translation is enabled, the following datagrams are translated into NMEA

sentences:

SeaTalk

NMEA

Description

DBT

Depth below transducer

MWV

Wind angle, (10 and 11 combined)

MWV

Wind speed, (10 and 11 combined)

VHW

Speed through water, includes heading when

present

VLW

Trip mileage (21 and 22 combined)

VLW

Total mileage (21 and 22 combined)

MTW

Water temperature

VLW

Total and Trip mileage

VHW

Speed through water, includes heading when

present

MTW

Water temperature

---

GPS latitude, value stored

---

GPS longitude, value stored

---

GPS speed over ground, value stored

RMC

Course over ground. RMC sentence is

generated from stored values from other GPS

related datagrams.

---

GPS time, value stored

---

GPS date, value stored

---

GPS lat/long, values stored

HDG

Magnetic heading, including variation (99)

---

Magnetic variation, value stored

The table shows that not all datagrams result in an NMEA sentence. Some datagrams are only used

to retrieve data, which is combined with data from other datagrams to be able to create one NMEA

sentence.

When the SeaTalk translation is enabled with option 2 (the ‘s’ parameter in the CF sentence is 2),

unlisted datagrams are translated into a proprietary NMEA sentence with the following format:

$PSMDST,aa,bb,cc,dd…*hh<CR><LF>

aa,bb,cc,dd… represent the hexadecimal value of the bytes from the received SeaTalk datagram.

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 43 44

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