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30 March 1984 A Fiber Optic LAN With IEEE 488 Interface
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Abstract
The IEEE 488 (or IEC 625) interface standard for programmable instrumentation is used widely, all over the world, in laboratories and manufacturing pants. The main limitation of this data bus system is distance : the maximum cabling distance is 20 meters or 2 meters per instrument, whichever is less. Fiber optics can help us getting rid of this serious distance limitation problem. DATEABUS 488 is a ring shaped physical local area network, which is totally transparent to the IEEE 488 protocol. It uses optically bypassed, fail-safe, transceivers (Servotaps), for high reliability. Maximum distance between stations is one kilometer. Maximum data rate is 140 kilobyte per second. The number of stations can be higher than 100, but addresses are limited to 31 by the protocol. The noise immunity inherent to optical fiber precludes any deterioration of bit-error-rate.
© (1984) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jan P. VanDooren "A Fiber Optic LAN With IEEE 488 Interface", Proc. SPIE 0403, Optical Fibers in Broadband Networks, Instrumentation, and Urban and Industrial Environments, (30 March 1984); https://doi.org/10.1117/12.935609
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