The maximum length for an NMEA 2000 backbone consisting entirely of Lite Cable is:

The maximum length for an NMEA 2000 backbone consisting entirely of Lite Cable is:

• A. 50 meters
• B. 100 meters
• C. 150 meters
• D. 200 meters

Answer: (B)

In an NMEA 2000 backbone, the length is limited by how well the CAN signal can travel along the trunk and still deliver enough power to all nodes. Lite Cable is thinner and has higher resistance per meter than the standard backbone cable, so as the backbone grows longer, voltage drop and signal attenuation increase. To keep the bus impedance, termination, and device operating voltage within the limits that guarantee reliable communication, the specification caps the maximum backbone length when using only Lite Cable at 100 meters. If you need more distance, you’d typically use a different (standard) cable for longer portions of the backbone or restructure the network to avoid extending the Lite Cable length.

In an NMEA 2000 backbone, the length is limited by how well the CAN signal can travel along the trunk and still deliver enough power to all nodes. Lite Cable is thinner and has higher resistance per meter than the standard backbone cable, so as the backbone grows longer, voltage drop and signal attenuation increase. To keep the bus impedance, termination, and device operating voltage within the limits that guarantee reliable communication, the specification caps the maximum backbone length when using only Lite Cable at 100 meters. If you need more distance, you’d typically use a different (standard) cable for longer portions of the backbone or restructure the network to avoid extending the Lite Cable length.