(2020-02-23, 10:39 PM)Techstyle Wrote: Is that device bi-directional?
Hi Techstyle. Another option would be to find a Raymarine ST60 Multi instrument. It has "Seatalk 1", "NMEA In", and "NMEA Out" plugs on the back and it will convert some data from Seatalk 1 to NMEA 0183 and other data from NMEA 0183 to Seatalk 1 See below for sentences.
From the ST60 Multi Instrument Owner’s Handbook
1.6 Operating with NMEA
The ST60 Multi instrument can provide data communication between SeaTalk
and NMEA when the appropriate connections are made, and supports NMEA
0183 compatible products.
SeaTalk to NMEA 0183
Data from SeaTalk is transmitted to the NMEA output port every 2 seconds. The
data types and NMEA headers are:
Data NMEA Header
Depth DBT
Heading, deviation and variation HDG
Magnetic heading HDM
Water temperature MTW
Water speed and heading VHW
Wind speed and angle MWV
NMEA to SeaTalk
The ST60 Multi instrument decodes certain data from NMEA when available, and
if the respective data is not already present on SeaTalk, transmits the decoded
data to SeaTalk. The data types and NMEA headers are:
[b] Data NMEA Header[/b]
XTE, Waypoint identifier,
Bearing & distance to waypoint APB
Bearing & distance to waypoint BWC
Bearing & distance to waypoint rhumb line BWR
Latitude and longitude GLL
Time, latitude, longitude, satellites tracked & HDOP GGA
Cross track error MWV or XTE
Navigational information RMB
Time, date, lat, long, COG & SOG RMC
COG and SOG VTG