SYSTEM TO ASSESS NOISE IMMUNITY OF TELECOMMUNICATIONS COMPLEX Russian patent published in 2011 - IPC G01R31/08 

FIELD: electricity.

SUBSTANCE: in the system for assessment of noise immunity of a telecommunications complex there is a recorder included as equipped with a memory and a module of discrete Fourier transformation, being connected to a metre of electromagnetic field parameters that this equipment and its communication cables are exposed to, and also a processor with a display interacting with the specified recorder. Recorders are made as mobile microprocessor modules with autonomous supply sources. The system also comprises an additional recorder by the module of discrete Fourier transformation, which is equipped with a cable insert with connectors that interact with one of the communications cable and an appropriate port of telecommunications complex equipment, and also a tapping with a module of discrete Fourier transformation of this recorder connected to its inlet. Timers are made on the basis of quartz generators, stability of which is determined by the following dependence: Δ≤1/FDT, where F - frequency of development of discrete Fourier transformation, D - its discrecity, T - technologically permissible gap of measurement time between mutual synchronisations of timers. The central processor is equipped with one port for connection of the specified detachable carriers and a double-channel circuit board to work with video signals.

EFFECT: provides for detection of areas of actual penetration of electromagnet noise into communication line in facility premises.

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