A total of 16 priority levels can be specified for microphone, call stations and trigger inputs for optimum system flexibility.The powerful 240 W output section has six transformer-isolated 100 V constant-voltage outputs for driving 100 V loudspeakers in six separate zones.
The controller has two BGM source inputs and a mic/line input with configurable priority, speech filter, phantom power and selectable VOX activation. The system is configured using DIP switches for basic functionality and a PC for more advanced functions. The audio output uses standard analog audio 100 V line switching for full compatibility with the product family of public address equipment and Bosch EVAC-compliant loudspeakers. Additional amplifiers can be added to provide twochannel operation. A builtin 240 W amplifier provides the power for the emergency call channel and BGM. Interconnections are made using standard RJ45connectors and shielded CAT-5 cable. Up to eight call stations can be connected.
The controller can be used as a tandalone system with up to six zones, or expanded to up to 120 zones using additional sixzone routers. It is the basis of the Plena Voice Alarm System, and has all the essential functionality for compliance with the EN 5416 and EN 60849 standards, including full system supervision, loudspeaker line impedance supervision, a supervised emergency microphone on the front panel and a supervised message manager.The messages can be merged to allow even more flexible use of prerecorded announcements and evacuation messages. The LBB 1990/00 Voice Alarm Controller unit is theheart of the Plena Voice Alarm System.
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