Re: Re: [Development] Lights functions required

["james" <James@xxxxxxx>]

If I remember correctly on a standard lighting desk 70% on the fader is 50%
actual brightness. 95%-100% on the fader is un-noticable to the eye as is
0%
to 10%. www.zero88.co.uk (demux48)and www.etcconnect.com (expression desk)
have more info. Dimming curves in theatrical light is usually done on the
desk or the de-multiplexer, the actual dimmers are fairly dumb.  The main
reason to use the right curve is for crossfades. If a light fades down in
area A and then up in area B the overall intensity should remain constant,
aka the dipless cross-fade.

As a suggestion could the dimmer be able to sense its load so as to be able
report blown bulb or even incorrect bulb accross the network??

James T

----- Original Message -----
From: "Dr John Tankard" <john@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Monday, June 11, 2001 10:25 PM
Subject: [ukha_d] Re: [Development] Lights functions required


> > I've just checked the manual for my stage dimmers (Light
Processor
> > Paradims), and they have the options of linear (I assume by
time),
> and
> > square law (which is the conversion for power). I'm pretty sure
that
> > this is all that most professional lighting dimmers offer -
> > manufacturers web sites for people like Avolites or Celco will
> probably
> > have more details. The square law certainly looks linear enough
to
> my
> > eyes.
>
> Tel us more...
>
> The square law, I thought was about distance from the source.
>
> This sounds interesting.
>
> My current prototype integrates the sine wave to power, but its not
> linear to my eyes, at the low end its way off, having said that its
> better than the x10 units.
>
> John
>
>
>
>
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