NMEA 2000 Exam Practice Questions and Answers

NMEA 2000 Exam Practice Questions and Answers When termination resistors are connected at the wrong locations, the voltage drop in the power leads (NET-S and NET-C) will be ______________ than the common mode voltage range. - Ans:-Voltage drop is unaffected by termination resistors. True or False... NMEA 2000® PGN's are a series of numbers and letters that describe the data coming from a particular device on the network. - Ans:-False. Which of the statements regarding Bus Power for a NMEA 2000 Backbone is False? Calculations ensure that all devices are getting adequate power. More than one Power Tee(s) may be needed to feed all devices Devices furtherest from power insertion point will get less voltage. - Ans:-None of the above. In-Line Termination Resistors are typically used when: - Ans:-There are cable runs greater than 6 meters up a mast or tower. Which installation example would require device instancing? - Ans:-2 Transducers. The maximum voltage drop allowed from the battery source to the power insertion point is: - Ans:- 3%. ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 2/11 The NMEA 2000 Mid cable can use which of the following connectors? Field Attachable Mini Micro All of the above. - Ans:-All of the above. True or false? If you are using multiple power Tees, the Shield / Drain connection should be connected to the non-current carrying RF Ground system at only one location. - Ans:-True. The purpose of termination resistors in an NMEA 2000® backbone is: - Ans:-To limit signal reflections from each end of the backbone. True or false? If a display on the network has a LEN of 22, it can power itself entirely from the NMEA 2000 network power. - Ans:-False. True or false? In order to get a 60 Ohm meter reading between the blue and white NMEA 2000 data wires, power to the network must be OFF. - Ans:-True. A NMEA 2000® backbone Tee has two connectors on the backbone: _______ and _______, and a third _______ connector for the drop. - Ans:-Male and Female, Female ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 3/11 True or false? The shield / drain wire is connected to the NMEA 2000® network common reference ground at only one power supply location. - Ans:-True. The maximum network voltage drop for an NMEA 2000® network powered from a regulated DC Power Supply is: - Ans:-3.61 volts. True or false? Per the NMEA 2000 standard, Instance numbers are pre programmed by the manufacturer and cannot be changed. - Ans:-False. The maximum voltage drop allowed from the battery source to the power insertion point is: - Ans:- 3%. The voltage of the NMEA 2000® backbone power supply pair must be maintained to within which following range: - Ans:-9-16V. The maximum voltage drop for an NMEA 2000® network powered fro