ASTTBC RFPT — Fire Alarm Systems (AL) · Question
How is the 'Survival' of a Data Communication Link (DCL) with Isolators verified?
Clause 5.5.1.3.1 specifies that for DCLA circuits, a short circuit must be introduced, and the system must report a trouble yet remain operational (if isolators
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Question: How is the 'Survival' of a Data Communication Link (DCL) with Isolators verified?
Answer options: ✅ Introduction of a short circuit to verify isolator operation
- Checking if the cable has a 'fire-rated' jacket label
- Verifying the wire is exactly 18 AWG
- Ensuring the shield is grounded at both ends
Correct answer: Introduction of a short circuit to verify isolator operation
Explanation: Clause 5.5.1.3.1 specifies that for DCLA circuits, a short circuit must be introduced, and the system must report a trouble yet remain operational (if isolators are used).
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Question explanations
- Which of the following constitutes a system 'deficiency' rather than a 'non-conformance' to current standards?
- When a deficiency is corrected, what specific information MUST be recorded in the log?
- Which of the following would be categorized as a 'Non-Conformance' to the Installation Standard (S524) in an i
- In the event of a deficiency that renders the fire alarm system inoperative, what is the mandatory reporting r
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