IEEE C37.94-2002 pdf download IEEE Standard for N Times 64 Kilobit Per Second Optical Fiber Interfaces Between Teleprotection and Multiplexer Equipment
1. Overview
1.1 Scope
This standard describes the interconnection details for N, where N = 1, 2…12, times 64 kilobit per secondconnections of teleprotection equipment to digital multiplexers using optical fiber Requirements for bothphysical connection and the communications timing are also included.
1.2 Purpose
The purpose of this standard is to allow the interconnection of different vendors’ teleprotection equipmentwith different vendors’ multiplexer equipment, without any restriction on the content of theN times 64 kilobit per second data using up to 2 km of 50 or 62.5 micrometer multimode optical fiber.
2. References
The following standard contains provisions, which through reference in this text constitute provisions of thisstandard.At the time of this publication, the editions indicated were valid. All standards are subject torevision, and parties to agreements based on this stardard are encouraged to investigate the possibility ofapplying the most recent editions of the standards indicated below. Members of the IEC and ISO maintainregisters of currently valid International Standards.
IEC-60874-10-1 (1997-06) Connectors for optical fibres and cables- Part 10-1: Detail specification for fibreoptic connector type BFOC/2.5 terminated to multimode fibre type Al.
3. Definitions and acronyms
3.1 Definitions
For the purposes of this standard, the following terms and definitions apply. The IEEE AuthoritativeDictionary of lEEE Standards Terms, Seventh Edition B2) , should be used for terms not defined in thisclause.
3.1.1 jitter: A term used to describe perturbations in the timing of data bit transitions when the frequency ofthe 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 offthe walls of the core. This results in multiple signal paths through the fiber, which limits the maximumsignaling 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 signalssimultaneously over a single channel or transmission facility.
3.1.4 teleprotection equipment: Equipment that provides the interlace between the protective relay and acommunications circuit.
3.1.5 unit interval (Ul): 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 frequencyof the perturbations is less than 10 Hz
3.2 Acronyms
BERbit error rate
CRCcyclic redundancy check
Losloss of signal
LOFloss of frame
ppmparts per million
RDIremote defect indication
IEEE C37.94-2002 pdf download
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