LBB 1990 / 00 voice alarm controller is the core component

 of plena voice alarm system. As the basis of the plena voice alarm system, the controller is equipped with all the necessary functions in accordance with en 54-16 and en 60849 standards, including comprehensive system monitoring, speaker line impedance monitoring, emergency microphone monitored on the front panel and monitored information manager. The information can be combined to make more flexible use of pre recorded broadcast and evacuation information. The controller can be used as a stand-alone system with up to 6 zones, but an additional 6-zone router can also be used to increase the area to 120. The controller can connect up to eight call stations. They are connected using standard RJ45 connectors and shielded Cat-5 cables. Built in 240 w amplifier is used to output power for emergency call channel and background music. Users can add additional amplifiers to provide dual channel operation. All amplifiers are monitored. The audio output adopts standard analog audio 100 V line switching technology, so as to achieve full compatibility with the product series of public broadcasting equipment and Bosch evac standard speakers. The system can configure basic functions through dial switch, and more advanced functions can be configured through PC. The basic function controller has two background music source inputs, one configurable priority microphone / line input, voice filter and phantom power supply, and can choose whether to activate vox. Up to 16 priorities can be assigned to microphones, call stations and trigger inputs, giving the system excellent flexibility. The powerful 240 W output section provides six transformer isolated 100 V regulated outputs to drive 100 V speakers in six separate zones. The 100 V technology reduces signal loss on long-distance lines and allows simple parallel connection of multiple speakers. All regions can be individually selected on the front panel, and the background music output level of each area can be set separately in 6 steps. This controller supports a / b cabling. www.boschsecurity.com The configuration software is provided in the "software download" section of the upper plena voice alarm system controller. In addition, the software package also includes many useful programs, such as MP3 extraction software, sample rate conversion program, a variety of audio and video tools, and free MP3 encoded music. In addition, the power amplifier can output 100 V and 70 V respectively. A separate 100 V "call only" output is used for areas that do not require background music but require priority broadcasting. During the priority call, six configurable volume override output contacts can override the local volume control. Three line and four line support. The LED output is used to monitor the indicator. The built-in 16 MB flash memory can store up to 255 messages without battery backup. Each message can be set to any length, but it cannot exceed its total available capacity. Information and configuration can be uploaded from PC to memory via USB 2.0. After uploading, the device can disconnect the PC and operate. The information is in standard wav format, and the sampling rate supports 16 bit (linear PCM) format from 8 kHz to 24 kHz. This allows recording time up to 17 minutes and has CD quality signal-to-noise ratio.

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