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Building Modern Networks

Specifications for the local network

From all these considerations can be defined new specifications for field testing of the local network. It should take into account four essential points: the new frontier frequency, new performance classes, new levels of precision to comply with the limit frequencies and possible new measurement parameters.

To meet the specified frequency levels, devices for field testing must comply with the category or level so that the test measurements are carried out in the required class. Test equipment for Class E / Category 6 must comply with Level IIIe, and Class F – Level IVa (see. Table 2). Level consists of a number of individual parameters to determine the test device. Along the border with tolerance values ​​for the test device must meet the requirements to internal features, such as background noise and dynamic range. As part of the measurement procedures, test accuracy is identified in three different places: first – when the HF interface of the tester, so called. “Pivot value”; two others – at the points of interconnections identified as Permanent Link and Channel Link. These accuracy requirements meet such test equipment series LANTEK company IDEAL. LANTEK devices are regularly inspected and approved by an independent external organization (ETL) within a series of tests with equipment taken directly from the production line. In this way, each device receives a special certificate guaranteeing that it complies with the required level of accuracy. Strict observance of this parameter becomes increasingly important as how modern applications with their growing requirements approaching the limits of cable options. The use of inaccurate test devices leads to the risk of a subsequent operation of the whole system. “Aliens” – the scourge not only for unshielded LANs remain in focus and in-field testing. So far, all they excited by the question: “How can you hold a meaningful field test parameter AXT?” Yes, some manufacturers have already submitted their initial proposals, but it does not give detailed figures of the characteristics but rather assess the different channels compared one with each other or, alternatively, extrapolate their behavior. In order to obtain useful information on the behavior of the system in AXT, it is important to measure each channel in comparison with any other channel in order or, even better, one channel relative to all other simultaneously. Theoretically, this is the perfect proposal, but in practice it you two feasible.

Specifications for the local network