4.2. Interception of Signal Device ( ISD )
ISD are intended to control wire broadcast distribution amplifiers of city wire broadcast networks and radio DBAs of wire broadcast networks, TV audio paths, VHF radio stations with received signals in order to further deliver urgent address to the public with control over its operability and serviceability of communication channels involved.
ISD is an integral component of AAS hardware and software package and is intended for use in LAS, ACAS, for civil defense and in emergency purposes, as well as at hazardous industrial facilities and other sites.
ISD includes electronic player unit with MMC/SD memory card storing voice messages to be delivered during notification. Message number (1 to 4095) is transmitted to the device from LAS / ACAS control PC with installed GLOBAL ADDRESS SYSTEM software. In case of abnormal alert an audio message shall be delivered real-time by control PC link.
ISD is controlled by LAS, ACAS control PC with installed GLOBAL ADDRESS SYSTEM software by data network with 10/100 BaseT terminating equipment interface – Ethernet link (two channels).
The device shall be operated in controlled environmental conditions.