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ESTA, the North America-based Entertainment Services & Technology Association has announced that BSR E1.11, Entertainment Technology - USITT DMX512-A, Asynchronous Serial Digital Data Transmission Standard for Controlling Lighting Equipment and Accessories, is now available for public review and comment. This document is an updating and revision of the widely-used DMX512/1990, which was originally developed by the United States Institute for Theatre Technology. USITT's DMX512 is being revised to clarify undefined and loosely-defined provisions in the original document and to accommodate new lighting technology while maintaining backward compatibility with products that comply with the existing standard. The new version addresses issues regarding the use of alternate start codes, the undefined data pair, grounding practices, over-voltage protection, error detection, and alternate connectors.

Comments on BSR E1.11 are being sought so that the standard may reflect the consensus of the entertainment lighting industry. The complete public review materials packet includes a copy of BSR E1.11 , a comment form for BSR E1.11, and this instruction page. The public is invited to use these materials to review the document and to offer criticism - both positive and negative - by the comment deadline of 5:00 p.m. Eastern Time on 24 April 2001. Comments received after that time may not be considered as part of this public review.

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