The unit has 12 contact trigger inputs for business and emergency (EMG) calls. This gives up to 17 minutes of recording time with CD-quality signal-tonoise ratio. The standard WAV-format is used for the messages, and sample rates of 8 kHz up to 24 kHz with 16-bit word length (linear PCM) are supported.
Messages and configurations are uploaded from a PC via USB 2 into the memory, after which the unit operates without a PC connection. Each message can have any length within the total available capacity. Up to 255 messages can be stored in the internal 16 MB flash ROM, without a need for battery backup. Both four-wire and three-wire schemes are supported. Six configurable volume-override output contacts are available for overriding local volume controls during priority calls. A separate 100 V call-only output provides addressing for an area where BGM is not required but where priority announcements are. The CD also includes many useful programs, such as MP3 –ripping software, a samplerate converter, various audio and visual tools, and free, MP3-coded music.The amplifier output is also available as a separate output on 100 V and 70 V.
FunctionsĬonfiguration software is provided on the CD included with the unit. 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 Plena family of public address equipment and Bosch EVAC-compliant Additional Plena Amplifiers can be added to provide two-channel operation. Interconnections are made using standard RJ45 connectors and shielded CAT-5 cable.Ī built-in 240 W amplifier provides the power for the emergency call channel and BGM. Up to eight call stations can be connected. The controller can be used as a stand-alone system with up to six zones, or expanded to up to 120 zones using additional six-zone routers. It is the basis of the Plena Voice Alarm System, and has all the essential functionality for compliance with the EN 54‑16 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 pre-recorded announcements and evacuation messages. The Plena Voice Alarm Controller unit is the heart of the voice alarm system.