What is the maximum allowable voltage drop at the end of the last segment in NMEA 2000 wiring?

The maximum allowable voltage drop at the end of the last segment in NMEA 2000 wiring is 1.5 volts. This specification is crucial for maintaining the integrity and performance of the NMEA 2000 network, which is used primarily in marine electronics for communication between devices.

A voltage drop beyond this level can result in insufficient power being delivered to devices at the end of the network, potentially leading to malfunction or failure of electronic equipment. By adhering to the 1.5-volt limit, users ensure reliable operation of connected instruments and devices, as the system is designed to function properly within these electrical parameters.

In contrast, higher voltage drop limits, such as 2 volts or 2.5 volts, would not be acceptable because they could compromise the performance and reliability of the network. The design requirements of NMEA 2000 specify tight tolerances to ensure communication integrity and device performance across complex marine installations.