Standards News

New Standard in review: Prevention of falls on mobile stages

Posted on Wednesday, December 16th, 2015

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BSR E1.57 – 201x, Recommendations to prevent falls on or off movable parade floats, movable stages, and similar moving platforms.

This standard offers recommendations to prevent falls by anyone (e.g., performers, technicians, politicians) on parade floats, movable stages, and similar moving platforms. Fall protection is needed, but this protection needs to be provided in a way that preserves the artistic intent of the moving float or platform. This document is being written to provide guidance on how to accomplish this.

 Comments are due by US COB on 2nd February, 2016.

For more information, please contact:
Karl G. Ruling, PLASA Technical Standards Manager
630 Ninth Avenue, Suite 609
New York, New York 10036 USA
Phone: 1-212-244-1505
karl.ruling@plasa.org

www.tsp.plasa.org

 

CIE looks to update Colour Rendering Index (CRI)

Posted on Friday, November 27th, 2015

00439AA0B2The Commission Internationale de l’Eclairage (CIE) have published a position statement on their intentions to develop a new and improved colour fidelity metric that would update the CRI (Colour Rendering Index).

The CIE have also accepted that the CRI has several significant sources of colorimetric inaccuracies and accept that it should be updated with the latest well-accepted formulae and an improved set of test samples. CIE’s own Technical Committee (TC1-90) is in the process of developing a new improved colour fidelity metric that can update the CRI. The CIE also recognises that the colour fidelity metrics including the CRI do not assess other important aspects of the colour qualities of light sources, in particular, those related to colour preference.

CIE TC 1-91 is developing a Technical Report on this subject, which will be the groundwork for developing colour preference metric(s). And again the CIE’s own TC1-91 is preparing a report on this subject, which according to the CIE’s website, will be the groundwork for developing colour preference metric(s).

Importantly, the CIE supports the study of the recently published IES Technical Memorandum TM-30, to which some CIE TC 1-90 members have contributed. This work was recently proposed for consideration in TC 1-90, which voted to make its Rf metric the basis for the TC’s first working draft.

To read the full draft of the CIE Position click here.

In relation to the above, the Society of Light and Lighting has published an open letter in support of TM-30

For more information on TM-30 click here.

 

Seven PLASA Standards in Public Review

Posted on Tuesday, November 24th, 2015

PLASA_Standards_LogoSeven PLASA North America standards are currently up for review.

New Standards:

BSR E1.53 – 20xx, Overhead Mounting of Luminaires, Lighting Accessories, and Other Portable Devices: Specification and Practice. The standard covers specifications for the primary and secondary mounting devices for portable stage and studio luminaires and accessories. It also covers these mounting devices for special effects equipment (e.g. fog machines and bubble machines) that are often mounted along with lighting equipment on trusses and rigging system battens. The standard would give guidance on how to properly affix these mounting devices. Comments are due by US COB on January 4, 2016.

BSR E1.51, The Selection, Installation, and Use of Single-Conductor Portable Power Feeder Cable Systems for Use at 600 Volts Nominal or Less for the Distribution of Electrical Energy in the Television, Film, Live Performance, and Event Industries in Canada. E1.51 is intended to offer guidance in accordance with existing applicable standards and regulations in Canada on how to select, install, use, and maintain single-conductor portable feeder cables used to supply power for television, film, live performance, and special events in Canada. Comments are due by US COB on January 4, 2016.

BSR E1.37-5 – 201x, General Purpose Messages for ANSI E1.20, RDM. This document provides additional Get/Set parameter messages (PIDs) for use with the ANSI E1.20 Remote Device Management protocol. Comments are due by US COB on January 5, 2016.

Standards to be reaffirmed:

ANSI E1.3 – 2001 (R201x), Entertainment Technology – Lighting Control Systems – 0 to 10V Analog Control Specification. The standard describes a method of controlling current-sink devices and equipment by means of an analog control voltage in the nominal range from zero to 10 volts positive, with the control signal current sourced from the controller. It is primarily intended for theatrical lighting controllers and controlled devices (e.g., dimmers), but any device could use this control method. The working group proposes to reaffirm the existing standard, which was previously reaffirmed in 2011. Comments are due by US COB on December 28, 2015.

ANSI E1.30-1 – 2010 (R201x), EPI 23. Device Identification Subdevice. This document is part of BSR E1.30, application level equipment interoperability for control of commonly encountered entertainment technology devices using ANSI E1.17. It specifies a templated device for device identification as typically used for remote hardware and software devices. The working group is proposing to reaffirm the 2010 version. Comments are due by US COB on December 28, 2015.

ANSI E1.27-1 – 2006 (R201x), Entertainment Technology-Standard for Portable Control Cables for Use with ANSI E1.11 (DMX512-A) and USITT DMX512/1990 Products. This standard describes the types of portable cable for the transmission of digital data among products which comply with ANSI E1.11, Entertainment Technology – USITT DMX512-A. It covers recommended cable types, connectors, and their internal wiring. The working group is proposing to reaffirm the 2006 version. Comments are due by US COB on January 4, 2016.

Standard to be Withdrawn:

ANSI E1.30-7 – 2009 (W201x), EPI 29, Allocation of Internet Protocol Version 4 Addresses to ACN Hosts. E1.30-7, EPI 29, is a recipe that changes some of the rules for ACN (ANSI E1.17) so that devices with IP addresses not set by DHCP can be used on a network. The standard is being proposed for withdrawal on the grounds that much of the document was based around a protocol not adopted by the market, and that implementation for IP addressing is better dealt with by designers, not through the standardization of any particular method. Comments are due by US COB on December 28, 2015.

For more information, please contact:
Karl G. Ruling, PLASA Technical Standards Manager
630 Ninth Avenue, Suite 609
New York, New York 10036 USA
Phone: 1-212-244-1505
karl.ruling@plasa.org

www.tsp.plasa.org

Source: Lighting & Sound America

 

ANSI approves two PLASA standards and the withdrawal of a third

Posted on Wednesday, October 21st, 2015

On September 25, ANSI’s Board of Standards Review approved the reaffirmation of the 2010 edition of ANSI E1.30-4, EPI 26, Device Description Language (DDL) Extensions for DMX512 and E1.31 Devices, and the revised version of ANSI E1.37-2, Entertainment Technology – Additional Message Sets for ANSI E1.20 (RDM) – Part 2, IPv4 & DNS Configuration Messages.

ANSI E1.30-4 does what the title says: it defines protocol-specific extensions to the device description language for describing DMX512 devices.

ANSI E1.37-2 is another part of the multi-part, open-ended E1.37 standard. It provides get/set parameter messages for configuring network interfaces, routing information, and DNS settings on devices with IPv4 addresses.

Both standards are now published. They may be downloaded at no charge from http://tsp.plasa.org/freestandards; the free download is sponsored by Prosight Specialty Insurance.

On October 8, the ANSI Board of Standards Review approved PLASA North America’s withdrawal of ANSI E1.45 – 2013, Unidirectional Transport of IEEE 802 data frames over ANSI E1.11 (DMX512-A). ANSI E1.45 has been withdrawn because it does not comply with PLASA’s patent policy, which states that we do not intend to publish any standard that contains protected intellectual property unless that property can be licensed by anyone for a reasonable fee on a non-discriminatory basis. There are patents issued in Korea and in the United States that cover key parts of the standard. The licensing terms offered by the patent-holder do not meet our requirements, so the standard has been withdrawn.

For more information, please contact:
Karl G. Ruling, PLASA Technical Standards Manager
630 Ninth Avenue, Suite 609
New York, New York 10036 USA
Phone: 1-212-244-1505
karl.ruling@plasa.org

www.tsp.plasa.org

Source: Lighting & Sound America

 

Introduction to Modern Atmospheric Effects Revision in Public Review

Posted on Monday, April 13th, 2015

A fifth edition of The Introduction to Modern Atmospheric Effects is being developed. The public is invited to comment on the draft document.

Check it out at http://tsp.plasa.org/tsp/documents/public_review_docs.php. Comments should be submitted before May 15, 2015.

 

Weather vs. Lighting Designer

Posted on Monday, March 30th, 2015

Written by: John Featherstone

Even if Oscar Wilde did once say “Conversation about the weather is the last refuge of the unimaginative,” we all still love to talk about the weather. And, sooner or later, we will all have to do a show outside, or at the very least in a tent.

If we are honest, we are a business of “control freaks.” We love to set our own schedules, create our own environments and make our own rules. Yet the weather won’t cooperate with our schedules, seems to conspire against our creativity, and defies our rules. Whatever the reason, there is little debate that the weather is changing — storms seem to be fiercer, winds stronger, rains harder, winters colder and summers hotter. We have all seen the results of the weather catching us off guard, some of us first hand. From festival roofs collapsing to tour bus accidents, all too often lives are lost or people seriously hurt – band, crew and audience alike. So how can we learn to work with the weather, and still stay sane and most importantly safe? I’d like to use two projects as examples of how planning helps work in the face of the elements and coming out if not ahead, certainly unscathed.

Read the full article at: http://www.plsn.com/current-issue/102-safety-factor/15768-weather-vs-lighting-designer.html

 

Two PLASA Standards Published: A Revision and a Reaffirmation

Posted on Friday, February 27th, 2015

NSI E1.19 – 2015, Recommended Practice for the Use of Class A Ground-Fault Circuit Interrupters (GFCIs) Intended for Personnel Protection in the Entertainment Industry and ANSI E1.23 – 2010 (R2015), Entertainment Technology – Design and Execution of Theatrical Fog Effects, were approved by the ANSI Board of Standards Review on February 10th and 13th respectively. They are now published and are available for free at http://tsp.plasa.org/freestandards. The free download is made possible by the sponsorship of ProSight Specialty Insurance. They also may be purchased from ANSI’s eStandards Store (http://webstore.ansi.org/) for $15.00 each.

ANSI E1.19 is intended to offer guidance in accordance with existing applicable standards on how to select, install, use, and maintain ground-fault protection devices in the entertainment industry to protect persons from shock and persons and property from fire. This is a revision of the 2009 version that incorporates new information about avoiding nuisance tripping and offers new recommendations for ground-fault protection on higher ampacity circuits.

ANSI E1.23 offers guidance on planning and carrying out fog effects so that recognized exposure levels are not exceeded, fire and egress hazards are not created, false alarms don’t summon the fire brigade, and fog effects are executed as they are designed, performance after performance. This is a reaffirmation of the 2010 version. There are no substantive changes.

For more information, please contact: Karl G. Ruling, PLASA technical standards manager, 630 Ninth Avenue, Suite 609, New York, New York 10036; phone: 1-212-244-1505; or via email at standards.na@plasa.org.

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