Quote:
Originally Posted by steverk
Has anybody stopped to consider the lighting on Eistein?
The lighting was very different on Einstein than it was on any other field. It was much more involved. It had moving spotlights. It was routinely dimmed.
Theatre lighting is controlled by a several pieces of equipment called "dimmer packs." In recent years, they went to wireless controls on the dimmer packs, so ugly or lengthy control wires would not need to be strung to the lighting racks.
To quote wikipedia directly:
Recently, wireless DMX512 adapters have become popular, especially in architectural lighting installations where cable lengths can be prohibitively long. Such networks typically employ a wireless transmitter at the controller, with strategically placed receivers near the fixtures to convert the wireless signal back to conventional DMX512 wired network signals...The first commercially marketed wireless DMX512 system was based on frequency-hopping spread spectrum (FHSS) technology using commercial wireless modems.[8] Somewhat later some venders used WiFi/WLAN technology. Other later generation systems still used frequency-hopping spread spectrum (FHSS) technology, but at higher bandwidth. FHSS systems tend to disturb other types of wireless communication systems such as WiFi/WLAN. This has been solved in newer wireless DMX systems by using adaptive frequency hopping and cognitive coexistence, a technique to detect and avoid surrounding wireless systems, to avoid transmitting on occupied frequencies.[9]
( http://en.wikipedia.org/wiki/DMX512)
So could this be part of the problem? Was the transmitter near the wireless access point? Hopefully someone familiar with the field can answer some of these questions. |
I own a theater company and I manage a few theaters out of my local hometown and use a very similar setup to what they use in the rigging on Einstein. Wireless DMX is very behind in the amount of channels it can support and the lights that move, the intelligent lighting takes up many channels as every single aspect takes one channel. It would not have made any sense for them to have used wireless DMX. Using W-DMX would also mean flying all of the dimmer packs for the lighting, then the rigging isn't balanced on one side if those packs are up there.
I have used 2.4GHz and 5Ghz for intensive applications such as media streaming in theaters that were using wireless DMX at the same time and experienced no interference.