System RG2001
The system consists of a main station and repeaters, which are composed of a coder-decoder of radio messages and the respective number of radio stations. The main station (RG2001) is located in the coordination centre and it has 8 channels for communication with maximum 8 repeaters and 4 channels for communication with up to 4 work stations for monitoring of the sites. When 4 main radio frequencies and 4 random for doubling of alarm messages are used, the maximum number of guarded sites is 32768. Communication between the main station and the repeaters is through external modems for wire connection and/or radio modems. A graphic display 240x128 px or 16 rows with 30 symbols each is used for visualization of received information . Menus of the graphic display and the placed next to it input device are used for programming of the main station modes. Menus could be scanned by rotation of the input device and chosen by pressing it. The main station could be connected to a printer and the whole acquired information could be printed. If the number of sites is greater, information received from them could be selected based on some characteristics and it could be distributed to up to 4 work stations for visualization, processing and recording. The main part of the repeaters is the coder-decoder (RG2001 H). Up to 8 radio stations could be connected to the coder-decoder. There is also a serial port for connection with a modem (radio modem). At the maximum configuration of the system – 8 repeaters working on 8 frequencies, 64 radio receivers listen to the ether distributed in groups of 8 for a frequency at different points – 8 in the field. This is a guarantee that no message, sent from any guarded site, will be missed. Because of the fact that the alarm messages are doubled over one of the four frequencies (or more – up to 8) by a random law, it is practically impossible the channel to be blocked, since the frequency over which the doubled message will be transmitted is not known in advance. When a repetition of 4 or more times is set, the alarm message is transmitted over 5 frequencies and the order is determined randomly.

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Features:
  • Up to 8 radiostations through coder-decoder RG2001 H
  • Message standart - KP
  • Filter for duplicate messages – 2.5 minutes
  • Back-Up messages selecting
  • Test messages selecting and counting the number of repeaters which receive them
  • 4 x RS 232C channels for connection with up to 4 monitoring stations
  • 8 channels for connection with up to 8 repeaters
  • RS 232C channel for connection with radio modems
  • LCD – 16 rows with 30 symbols
  • Centrnics Standart Paralel Port for connection with printer
  • 5120 for a radio channel
  • When using 4 main radio frequencies and 4 back-ups, the maximum number of guarded sites is 32768
  • Power supply - 220V AC/50Hz or 12V DC/1.2A