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AusChristmasLighting 101 Manual
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101 display basics
When do you use a null node?
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[QUOTE="ryanschristmaslights, post: 90788, member: 138"] [I][plain]TL;DR[/plain] It sounds like a null pixel would solve the 13m issue.[/I] Pixel data can only travel a certain distance before it deteriorates to the point of being corrupted. Null pixels are useful on long runs as they regenerate the signal (the same as a regular pixel would), and the data can go a little bit further before your first pixel (or another null pixel). The distance between your controller and first pixel typically can be longer than between different pixels. I like to think of null pixels like Chinese whispers where the null pixel has an ear piece to hear what the original word was at the other end of the long cable :D (the cheat! :eek:) With a PixLite 4, I could get some pixels working perfectly over a 12 metre run without a null pixel off one output, but with another output and identical pixels I needed a null pixel at the 9 metre point to make it the whole 12 metres (I was using Ray's 3-metre 13.5mm extension leads). If I put the null pixel at the 6 metre point, then I needed a second null pixel at 9 metres, too. One way around long pixel data run problems, particularly if you have a lot of them, is to use differential controllers (Falcon F16/F4 with differential expansion/receivers, or PixLite 16 Long Range + long range receiver). Of course, someone else may have a better explanation :) [/QUOTE]
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