Description
M Class PA/GA System Units
- System rack
Depending on application several sectors/area maybe assigned dedicated
PA/GA resources with network connections to communicate inter sector. - Operator access units
- Loudspeakers
- Flashing beacons (high intensity) in high ambient noise areas
Amplifier cage
The amplifier cage carries loudspeaker amplifiers, type VA300+M, which facilitate both drive and management of groups of loudspeaker devices.
Amplifier module
A typical PA/GA system might have amplifiers ranging from two units to hundreds of amplifiers depending on the acoustic alarm signals and intelligible speech coverage requirement over the site.
Amplifier power supply
The VA300+M amplifier provides extremely high power density in a compact lightweight modular plug in “cassette” format. VA300+ amplifier power supply is derived from VA300+/PSU which facilitates dedicated outlets for each amplifier thereby enhancing overall system security.
Management central processor VX/AT-M
The complete package is managed by the PSC VODEC VX/AT-M central pro
cessor. VX/AT-M provides:
– Secure switching of input/output program
– Generation of internationally specified alarm tone cadence
– Supervision and control of system priorities
– Supervision of the complete PA/GA system
– Re-programmable system configuration via email
Ports
Connection of field equipment to the host rack is made via an integral “MDF” which houses a number of DIN rail mount termination “ports”.
A family of PSC VODEC ports enable simple reliable implementation of
– Self healing loudspeaker and flashing beacon networks “Loop” based
– Mutable loudspeakers
– Interfaces to other site systems e. g. PABX, VHF, Radio, SCADA, Fire and Gas, ESD, Supervisory, Event Recording, Entertainment Systems
– Connection to operator access units
– AC/DC power supplies
