IEEE C37.94-2013 pdf free

IEEE C37.94-2013 pdf free.Standard for N times 64 kilobit per second optical fiber interfaces between teleprotection and multiplexer equipment.
IEEE C37.94 describes the interconnection details for N, where N= 1, 2… 12, times 64 kilobit per second connections of teleprotection equipment to digital multiplexers using optical fiber. Requirements for both physical connection and the communications timing are also included.
The purpose of this standard is to allow the interconnection of different vendors’ teleprotection equipment with different vendors’ multiplexer equipment, without any restriction on the content of the N times 64 kilobit per second data using up to 2 km of 50 or 62.5 micrometer multimode optical fiber.
The following standard contains provisions, which through reference in this text constitute provisions of this standard. At the time of this publication, the editions indicated were valid. All standards are subject to revision, and parties to agreerments based on this stardard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated bclow. Members of the IEC and ISO maintain registers of currently valid International Standards.
For the purposes of this standard, the following terms and definitions apply. The IEEE Authoritative Dictionary of IEEE Standards Terms, Seventh Edition [B2] 2, should be used for terms not defined in this clause.
3.1.1 jitter: A term used to describe perturbations in the timing of data bit transitions when the frequency of the perturbations is greater than 10 Hz.
3.1.2 multimode optical fiber: An optical fiber that has a relatively large core, in which light bounces off the walls of the core. This results in multiple signal paths through the fiber, which limits the maximum signaling rate more and more as the fiber length increases.
3.1.3 multiplexer equipment: A device that allows the transmission of a number of different signals simultaneously over a single channel or transmission facility.
3.1.4 teleprotection equipment: Equipment that provides the interface between the protective relay and a communications circuit.
3.1.5 unit interval (UI): Time duration equal to the reciprocal of the bit rate.
3.1.6 wander: A term used to describe perturbations in the timing of data bit transitions when the frequency of the perturbations is less than 10 Hz.IEEE C37.94 pdf free download.