Subelement F: Other Equipment and Networks— Topic :
Question 43F6
Element 9 (GMDSS Maintainer)An important difference between NMEA 0183 and NMEA 2000 is:
Explanation
NMEA 0183 uses a "single talker, multiple listeners" approach, meaning each device that transmits data (a "talker") needs a dedicated connection to each device that receives it (a "listener"). It's a point-to-point, serial communication protocol, often based on RS-232 standards.
NMEA 2000, on the other hand, is based on the Controller Area Network (CAN bus) standard. This allows multiple devices to be connected to a single bus and share data. Any device can act as a "talker" or "listener," sending or receiving data packets that are available to all devices on the network. This "multi-talker" capability, with robust arbitration, allows for more complex and integrated marine electronics systems.
Options A, B, and D are incorrect. The switching mechanism (A) and voltage levels (B) are not the defining distinctions of the protocols themselves. Both are designed for data transfer, not video (D).
Related Questions
43F4 What type of data communication is used for NMEA 0183.43F5 Which of the following statements about an NMEA -0183 system is correct?44F1 The Voltage of the NMEA 2000 backbone power supply pair must be maintained to within the following range.44F2 NMEA 2000 Certified Device identify their current requirements in terms of LENs (load Equivalent Number). 1 LEN is equal to:44F3 Which of the following are NOT components of a NMEA 2000 network?