Which of the following statements about an...

Question 1 / 20ZDD3iWKGwB5uKHAi2esc

Question 1 of 20ZDD3iWKGwB5uKHAi2esc

Which of the following statements about an NMEA -0183 system is correct?

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Question 1 of 20

ZDD3iWKGwB5uKHAi2esc

Which of the following statements about an NMEA -0183 system is correct?

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🔍 Key Concepts

• NMEA-0183 interface standard for marine electronics communication • Purpose of opto-isolators in protecting talker and listener circuits • Proper shield grounding practice to avoid ground loops and interference

💭 Think About

• Think about why manufacturers use opto-isolators between talker and listener equipment. What are they trying to prevent? • In shielded data cables, what happens if you ground the shield at both ends versus only one end? Which tends to reduce noise and ground loop problems? • Compare Version 1 and Version 2 of NMEA-0183: are the big changes mainly in voltage levels, message format, or number of talkers/listeners allowed?

✅ Before You Answer

• Verify which device the shield is normally tied to: the talker chassis, the listener chassis, or both ends • Confirm the role of opto-isolators in NMEA-0183 (are they optional or strongly recommended/assumed in a correct installation?) • Check whether NMEA-0183 Version 2 actually specifies a higher signal voltage than Version 1, or if the difference is in data structure and system capacity instead

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Question 1 of 20

Which of the following statements about an NMEA -0183 system is correct?

The cable shield must be grounded at both ends including the opto-isolators.

Opto-isolators must be used and the shield should be grounded to the talker chassis only.

Opto-isolators must be used and the shield should be grounded to the listener chassis only.

Version 2 devices use higher voltages than version 1 devices.

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Question 1 / 20ZDD3iWKGwB5uKHAi2esc

Question 1 of 20ZDD3iWKGwB5uKHAi2esc

Which of the following statements about an NMEA -0183 system is correct?

Back

Question 1 of 20

ZDD3iWKGwB5uKHAi2esc

Which of the following statements about an NMEA -0183 system is correct?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed