What precedes the phasing signal in a DSC...

Question 1 / 20gN5dvwHAYM3MhiuuYfXA

Question 1 of 20gN5dvwHAYM3MhiuuYfXA

What precedes the phasing signal in a DSC distress alert call?

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Question 1 of 20

gN5dvwHAYM3MhiuuYfXA

What precedes the phasing signal in a DSC distress alert call?

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🔍 Key Concepts

• DSC (Digital Selective Calling) distress alert structure and order of components • The phasing signal purpose in DSC transmissions • The standard bit length of the alternating dot pattern that comes before the phasing signal

💭 Think About

• Think about the sequence of elements in a DSC distress alert: call setup, distress format, and what is transmitted immediately before the phasing signal. • Consider why an alternating dot pattern is used and how long it must be to allow the receiving equipment to synchronize properly. • Compare the answer choices as powers or multiples of 2 and think which length is commonly standardized in digital signaling for synchronization.

✅ Before You Answer

• Verify in the GMDSS/ITU DSC documentation the standard bit length of the alternating dot pattern before the phasing signal. • Check that the chosen bit length is explicitly associated with synchronization just prior to the phasing signal in a distress alert. • Confirm you are looking at the section describing distress alert format, not routine or urgency calls.

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Question 1 of 20

What precedes the phasing signal in a DSC distress alert call?

An alternating dot pattern of 20 bits

An alternating dot pattern of 100 bits

An alternating dot pattern of 200 bits

An alternating dot pattern of 400 bits

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Question 1 / 20gN5dvwHAYM3MhiuuYfXA

Question 1 of 20gN5dvwHAYM3MhiuuYfXA

What precedes the phasing signal in a DSC distress alert call?

Back

Question 1 of 20

gN5dvwHAYM3MhiuuYfXA

What precedes the phasing signal in a DSC distress alert call?

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