What physical signaling lines carry the CAN data on an NMEA 2000 network?

Enhance your knowledge of NMEA 2000 standards. Study with interactive questions, hints, and explanations, tailored to gear you up for the exam. Excel in marine electronics!

Multiple Choice

What physical signaling lines carry the CAN data on an NMEA 2000 network?

Explanation:
CAN data on NMEA 2000 travels over a two-wire differential CAN bus: the CAN High (CAN_H) and CAN Low (CAN_L) lines. Data is represented as a voltage difference between these two wires, which makes the signal very resistant to electrical noise and interference common in a marine environment. The power and ground conductors are used to supply devices, not to carry the data, and USB or Ethernet lines are not part of the NMEA 2000 signaling. The two-wire, twisted-pair network is typically terminated with 120 ohms at both ends to prevent reflections.

CAN data on NMEA 2000 travels over a two-wire differential CAN bus: the CAN High (CAN_H) and CAN Low (CAN_L) lines. Data is represented as a voltage difference between these two wires, which makes the signal very resistant to electrical noise and interference common in a marine environment. The power and ground conductors are used to supply devices, not to carry the data, and USB or Ethernet lines are not part of the NMEA 2000 signaling. The two-wire, twisted-pair network is typically terminated with 120 ohms at both ends to prevent reflections.

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