ASTTBC RFPT — Fire Alarm Systems (AL) · Question
In a distributed processing fire alarm system, what must happen if data communication fails between the main CPU and a remote data communication link?
CAN/ULC-S527 §5.10 details technical requirements for distributed processing. If a communication link fails between a remote transponder and the CPU, both ends
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Question: In a distributed processing fire alarm system, what must happen if data communication fails between the main CPU and a remote data communication link?
Answer options:
- The transponder must go into alarm mode immediately
- The transponder should wait 100 seconds before trouble signal ✅ Both the transponder and the central control unit must indicate a trouble condition
- The loop must be automatically bypassed
Correct answer: Both the transponder and the central control unit must indicate a trouble condition
Explanation: CAN/ULC-S527 §5.10 details technical requirements for distributed processing. If a communication link fails between a remote transponder and the CPU, both ends must indicate a trouble signal.
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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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