Re: [LCtalk] buffer delay ?

[Fokko van Duin]

At 14:02 +0000 23-02-2005, Gideon Kiers wrote:
> Ah a bit more on this old topic then ..
> I was working on a highend catalyst system the past weeks and 
> noticed a considerable difference in response time. No visible delay 
> there.
> The catalyst video system is operated through the artnet protocol, 
> either straight from the lightdesk or through an artnet box.
> Is this artnetbox and/or protocol so much faster or what is it ?

Yes, as it's designed as DMX cable replacement. If we write firmware 
for the LCX which -only- had to send out UDP packets, there was also 
no visible delay! But...

The LanBox is a desk with uses a 50mS time slice in which all 
processing is done. If you connect the DMX-input of a LCX, the data 
will be collected as it comes in, but it will be processed in the 
same time slice as all other DMX data. So it's sampled every 50mS, 
which means that it could be DMX data which was send 50mS ago.

--
Fokko van Duin,                     Creators of the LanBox-LC
CDS advanced technology bv,         DMX lighting controller.
http://www.cds.nl/                  http://www.lanbox.com/

We are member of MIDI Manufacturers Association, MMA