Applicability / Design Basis: CCTV / imaging systems must be designed to achieve visual identification of persons, objects, or scenes, in accordance with the Authority Having Jurisdiction (AHJ).
Mounting & Enclosures: Enclosures and mounts must be tamper-resistant and provide protection against moisture, temperature extremes, and vandalism that could degrade image quality.
Camera / Illumination / Imaging Conditions: Design must account for backlighting, low-light conditions, glare, contrast, and lens selection. Features like automatic compensation may be required to maintain usable images.
Wiring / Cabling: All wiring must comply with NFPA 70 (NEC). Low-voltage video wiring must be separated from power wiring to reduce interference.
Power Supply & Redundancy: CCTV devices must have reliable power. Both primary and secondary power sources are required. Backup power must sustain operations during outages; switchover must occur within 10 seconds without unacceptable signal loss.
Performance & Image Quality: The system must deliver usable images consistent with design objectives (e.g., sufficient resolution and clarity for identification). Installers must verify that final images meet these requirements.
Testing, Inspection & Maintenance: CCTV components are subject to periodic inspection, testing, and maintenance per NFPA 731 Chapter 9. Defects must be corrected promptly (often within 24 hours).
Integration with Other Systems: CCTV may need to integrate with intrusion detection, access control, or other security systems. NFPA 731 outlines interrelation requirements.
AHJ Approval / Design Review: All designs, including any proposed equivalencies or deviations, must be submitted to and approved by the AHJ. The AHJ has the final authority.
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