Rose Point nemo, Руководство по установке, Страница: 8 / 27

4 Rose Point Navigation Systems
Accessory Port (ACCY)
The ACCY port is reserved for future use. Please do not plug any devices into
the ACCY port unless specifically approved by Rose Point Navigation Systems.
Please refer to our website for updates regarding the use of this port.
NMEA 0183
The Nemo Gateway conforms to the NMEA 0183 and NMEA 0183-HS marine
electronic device network communication standard. All NMEA 0183 ports are
capable of communicating in NMEA 0183 (4800 baud) and NMEA 0183-HS
(38,400 baud) modes via two talker ports and four listener ports.
NMEA 0183 and NMEA 0183-HS standards define device ports as either Talker
or Listener. A Talker is a port on a device (e.g. GPS) that is transmitting
information. A Listener is a port on a device (e.g. chart plotter) that is receiving
information. Some devices are capable of being both a Talker and a Listener , for
example an AIS transponder or chart plotter.
Common talker devices include GPS ’s , depth sounders, water speed indicators,
compasses, and wind indicators. Common listener devices include: AIS
transceivers, autopilots and chart plotters. Most of the common listener devices
mentioned will also have
Talker ports
Note: A Talker may be connected in parallel to up to 10 Listeners , while a
Listener may only connect to a single Talker.
Note: Talker 1 and Listener 1 operate at the same baud rate, but are otherwise
independent. Talker 2 and Listener 2 can also only have one baud rate, but are
otherwise independent.
Example:
Nemo Port 1 Talker - Connect autopilot ("Talking to AP")
Nemo Port 1 Listener - Connect GPS device ("Listening to GPS")
Baud Rate set to 4,800 for Nemo Port 1
– This setting applies to both parts of
the port (Autopilot and GPS)
When using NMEA 0183-HS, a three conductor, shielded cable is to be used and
requires two connections to be made in addition to the A and B wires used in
the NMEA 0183 protocol. These additional connections are a common ground