ESTA's Technical Standards Program announced four draft standards that are now available for public review. All can be accessed here.
BSR E1.31-200x, Entertainment Technology DSP DMX512-A Streaming Protocol will be available for review through March 19. BSR E1.22, Entertainment Technology - Fire Safety Curtain Systems; BSR E1.35-200x, Standard for Lens Quality Measurements for Pattern Projecting Luminaires Intended for Entertainment Use; and BSR E1.36-200x, Model Procedure for Permitting the Use of Tungsten-Halogen Incandescent Lamps and Stage and Studio Luminaires in Vendor Exhibit Booths in Convention and Trade Show Exhibition Halls will be available through March 12.
BSR E1.31- 200x is a simple protocol that offers functionality comparable to existing DMX512 over Ethernet protocols but with the advantages of compatibility with ANSI E1.17-2006 and easy implementation on managed networks. Device Management Protocol over Session Data Transport, borrowed from the ANSI E1.17 protocol suite, provides a mechanism for streaming DMX-type data intermixed with random access data and high-speed feedback in a flexible and scalable way.
BSR E1.22 describes the materials, fabrication, installation, operation, testing, and maintenance of fire safety curtains and fire safety curtain systems used for theatre proscenium opening protection. Instead of outlining what kind of fabric to use for a fire safety curtain, for example, but tells how strong fabric must be and what abrasion and fire tests it must pass.
BSR E1.35-200x describes a method for measuring stage and studio luminaire lens quality with particular emphasis on contrast and perceived image quality (sharpness). It also offers a way for presenting these results on a datasheet in a format readily understood by a typical end-user and allows the end-user to directly compare lenses in a meaningful way. There is currently no way to describe how clearly a stage lighting instrument projects an image other than by demonstration. Standards exist for projection lenses, but these are not applicable to the lower quality lenses used on stage and studio luminaires.
BSR E1.36-200x is a model set of procedures that can be used by convention center and trade show exhibition hall staff to mitigate risks associated with the use of tungsten-halogen lamps and stage and studio luminaires and to allow their use. There is no evidence that tungsten-halogen lamps used in Listed luminaires or that Listed stage and studio luminaires present any greater risk, as they are used in exhibition halls, than any other light source or type of luminaire in those venues, but the management staff of at least one major convention center in the United States believe they have elevated risks. They have moved to prohibit or limit the use of this equipment by exhibitors, but the restrictions are inconsistently enforced, largely because there is no clear procedure to decide when their use is acceptable or not. This draft standard offers a model procedure to permit or prohibit the use of tungsten-halogen lamps and stage and studio luminaires, and helps promote the use of the lamps and luminaires in a safe manner.
In addition to being asked to review the document to see if it offers adequate and correct advice, reviewers are asked to look for protected intellectual property in the draft standards. ESTA does not warrant that its standards contain no protected intellectual property, but it also does not intend to adopt any standard that requires the use of protected intellectual property unless that property is necessary for technical reasons and can be licensed and used by anyone without prejudice or preference for a reasonable fee. Any protected intellectual property in the document should be pointed out in the public review comments.
For more information, contact Karl G. Ruling, technical standards manager, ESTA, 875 Sixth Avenue, Suite 1005, New York, NY 10001; 1-212-244-1505; fax 1-212-244-1502; or standards@esta.org.
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