ZIZTEL - TRUE A+B PAGA SYSTEM INTEGRITY

ZIZTEL - TRUE A+B PAGA SYSTEM INTEGRITY. MISSION CRITICAL BROADCAST SYSTEMS. This short video from Ziztel illustrates the importance of full A+B system integrity throughout a P.A.G.A installation. ZIZTEL design and manufacture communications systems for life-safety critical applications; primarily for defence, oil and gas and nuclear industries. Our hardware has been specifically designed to align with mission-critical safety level certifications. For life-safety systems, high-integrity principles must be designed into the equipment from inception, and cannot be retrospectively added. Importantly, inadequate packages utilising general purpose hardware or intercom services cannot deliver the levels of integrity required for a life-safety system. An example of a poorly implemented AB system is where one intercom or access panel has been connected to a primary and secondary amplifier. Conversely, all Ziztel A+B equipment, implements various techniques and measures to provide comprehensive integrity throughout the life-safety system. Ziztel access units are true AB integrative devices, with the fundamental capability to serve dedicated AB circuits, integrating with system supervisory monitoring and management. A+B integrative devices feature dual circuit system indicators, dual voice coils, dual processors and power supplies. Membrane-keypad button-indicators provide A+B status per zone. The software layer used on our PCAP and PAWS units also displays the dual circuit status. The second aspect of A+B integrity relates to site installation principles. Microphone input, status and control access facilities are fully duplicated A+B. Dedicated A+B circuits have coverage to serve the same area where personnel occupy, according to prior acoustic site study. This means a minus 3 decibel sound pressure reduction with either A+B subsystems affected by a fault condition. A+B rack equipment should ideally be separated by a minimum A60 firewall. A+B field cable networks should be segregated, following isolated routes through transits, raceways and ducts where possible. Finally, the sub-systems are fully autonomous and have no interdependence. This completes our introduction to the Ziztel A+B high-integrity P.A.G.A system for industrial sites. Please contact us below for more information. www.ziztel.com