NMEA 0183 buffer-splitter-multiplier
NM-251A is a two channel NMEA 0183 input/ four or five channels NMEA 0183 output multiplier.
It enables data distribution from two NMEA 0183 sources (primary and secondary with priority encoding) to all NMEA 0183 instruments through four or five RS-422 or TTL talker ports and an I/O RS-232
NM-251A is certified to IEC 60945 for use on board SOLAS vessels.
Typical applications include the interconnection of navigation instruments like ECDIS, ECS, VDR, SVDR, Radars, VHFs, Conning-Monitoring systems, etc.