Which color pair on NMEA 2000 cables is used for data signaling on the backbone?

Which color pair on NMEA 2000 cables is used for data signaling on the backbone?

• A. Blue and White
• B. Red and Black
• C. Green and Yellow
• D. Brown and Orange

Answer: (A)

The backbone in NMEA 2000 uses a CAN bus pair to carry data. That data pair is blue and white, forming the two conductors for CAN High and CAN Low. This differential signaling makes the network resistant to electrical noise in a marine environment, allowing reliable communication to every device on the bus. The red and black wires supply power, while the remaining color pairs aren’t used for the backbone data in the standard. So blue and white are the data signaling pair on the backbone.

The backbone in NMEA 2000 uses a CAN bus pair to carry data. That data pair is blue and white, forming the two conductors for CAN High and CAN Low. This differential signaling makes the network resistant to electrical noise in a marine environment, allowing reliable communication to every device on the bus. The red and black wires supply power, while the remaining color pairs aren’t used for the backbone data in the standard. So blue and white are the data signaling pair on the backbone.