Interface Block BI-NTP for Accurate Time Synchronization in Metro Systems

The BI-NTP interface unit (hereinafter referred to as BI-NTP) is designed to operate as part of the metro unified time system. BI-NTP is designed to receive time from NTP server and retransmit it to the device FMI-14 minute pulse shaper (for the purpose of issuing corrective signals of current time for lobby clocks of CHVM-10 (CHV-11) type), as well as to the unified metro clock indication system (ESICH-M complex). BI-NTP is designed for operation in the conditions of crossing rooms.

In terms of resistance to climatic factors during operation BI-NTP corresponds to group K1 according to OST 32.146-2000, but for operation at ambient air temperature from +10 deg. C to +45 deg. C and relative humidity up to 90%.

According to the degree of protection of the shell, the BI-NTP control unit is made in a dustproof and moisture-proof enclosure according to IP 41 group according to GOST 14254-96. In terms of resistance to mechanical effects occurring during operation, BI-NTP corresponds to group MS1 according to OST 32.146-2000....