akael
Newbie level 4
Hello,
I have a converter board DVI to RGB, I conected this board to a TFT LCD MODULE using several cables, i didnt paid much attention to the signal length, and it works perfectly.
![IMG_20221107_175612.jpg IMG_20221107_175612.jpg](https://www.edaboard.com/data/attachments/109/109594-c379f7d8c3bac91661dc0eaa466f4845.jpg)
I've got another TFT LCD (different company) and i've decided to do a simple PCB board, but it doesn't work well, it has a lot of noise and if i set the full screen to be blue, it seems ligth blue, if i set red, it seems pink and so on.
![IMG_20221107_173127.jpg IMG_20221107_173127.jpg](https://www.edaboard.com/data/attachments/109/109595-7373baa98cc326d1be41e8bbde5e4475.jpg)
The clock signal is 25MHz, and the max difference of lengths between the clock signal and the RGB signal is 3cm , is this the the problem?
How could i determine the max length mismatch between the clock and the RGB signal allowed knowing the clock frequency?
Thanks in advanced,
Akael
I have a converter board DVI to RGB, I conected this board to a TFT LCD MODULE using several cables, i didnt paid much attention to the signal length, and it works perfectly.
![IMG_20221107_175612.jpg IMG_20221107_175612.jpg](https://www.edaboard.com/data/attachments/109/109594-c379f7d8c3bac91661dc0eaa466f4845.jpg)
I've got another TFT LCD (different company) and i've decided to do a simple PCB board, but it doesn't work well, it has a lot of noise and if i set the full screen to be blue, it seems ligth blue, if i set red, it seems pink and so on.
![IMG_20221107_173127.jpg IMG_20221107_173127.jpg](https://www.edaboard.com/data/attachments/109/109595-7373baa98cc326d1be41e8bbde5e4475.jpg)
The clock signal is 25MHz, and the max difference of lengths between the clock signal and the RGB signal is 3cm , is this the the problem?
How could i determine the max length mismatch between the clock and the RGB signal allowed knowing the clock frequency?
Thanks in advanced,
Akael
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