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Double-Way Fleet Communication and Loudspeaker Warning Equipment

SDPS-MDE

Double-Way Fleet Communication and Loudspeaker Warning Equipment (SDPS-MDE) is designed for the organization of loudspeaker warning communication and double-way communication on the railway, metro, industrial facilities with the maximum number of 24 independent loudspeaker announcement feeders.

Functional characteristics

Double-Way Fleet Communication and Loudspeaker Warning Equipment (SDPS-MDE) provides:

  • Double-way communication and announcements between manager’s panel boards, telephone set, double-way communication devices in accordance with the set priorities.

  • Double-way communication and announcements with and without transmission to the loudspeaker announcement line.

  • Double-way communication and announcements in “loud”, “quiet”, “daytime”, “nighttime” modes.

  • Integration organization of  double-way fleet communication and loudspeaker warning equipment (SDPS-MDE)  into distributed systems via digital E1 streams.

  • Connection to the Centralized Warning System (STsO)  via Ethernet network or nine-wire interface.

  • Transmission of announcements from external sources of audio-signals.

  • Connection to the external Automatic Telephone Station (ATS).

  • Broadcast of voice messages that were previously recorded following the order from dispatcher panel board or the internal control command.

  • Automatic redundancy of amplifiers following the scheme «N+N», «N+0»,«3+1».

  • Control of primary voltage 220 V and shut down followed by automatic switch-on of double-way fleet communication and loudspeaker warning equipment (SDPS-MDE)  in emergency operation (more than 280 V).

  • Switch-off of primary voltage 220 V following the signal of the external fire alarm system.

  • Switch-off of primary voltage 220 V following the signal of the external remote switching control system.

  • Monitoring and administration of equipment via Ethernet interface or USB.

  • Continuous resistance control of all loudspeaker announcement lines.

  • Control of any loudspeaker warning lines with the help of an in-built or external loudspeaker.

  • Operation with or without an external input-protection device.

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