Hi All,
New on this forum and I don't know if this is the right place for this question, so can an admin please move it if so
I have a DIY projector with a Pixelworks PW338 LCD controller driving a 15.4" LP154WU1 WUXGA screen and all has been working fine, but I now need to extend the LVDS cable from the controller to the screen by about 300mm.
Initially I tried Ethernet UTP pairs and tried to twist them at the same rate the LVDS cables were twisted and the screen was displaying an image, but it had horrendous colours and a lot of noise.
I thought it was because of interference as the cables weren't shileded so I opened up a VGA cable and I replaced the UTP pairs with individually shielded cables inside the VGA cable, I also used foil and braided shielding on the connection spots between the LVDS cables and extension VGA cables, no luck.
I still get exactly the same results as I did with UTP.
I tried different colour depth and resolution settings, the result is the same. As can be seen in the images the extension is only about 300mm long so that shouldn't be the problem as I heard people extending LVDS cables for longer distances than this.
The resolution I'm displaying on the projector screen is 1920 by 1080 through HDMI at 24 Hz but I also tried VGA with the same (actually a bit worse) result.
Does anyone know what might be the cause of this or what I should check?
New on this forum and I don't know if this is the right place for this question, so can an admin please move it if so
I have a DIY projector with a Pixelworks PW338 LCD controller driving a 15.4" LP154WU1 WUXGA screen and all has been working fine, but I now need to extend the LVDS cable from the controller to the screen by about 300mm.
Initially I tried Ethernet UTP pairs and tried to twist them at the same rate the LVDS cables were twisted and the screen was displaying an image, but it had horrendous colours and a lot of noise.
I thought it was because of interference as the cables weren't shileded so I opened up a VGA cable and I replaced the UTP pairs with individually shielded cables inside the VGA cable, I also used foil and braided shielding on the connection spots between the LVDS cables and extension VGA cables, no luck.
I still get exactly the same results as I did with UTP.
I tried different colour depth and resolution settings, the result is the same. As can be seen in the images the extension is only about 300mm long so that shouldn't be the problem as I heard people extending LVDS cables for longer distances than this.
The resolution I'm displaying on the projector screen is 1920 by 1080 through HDMI at 24 Hz but I also tried VGA with the same (actually a bit worse) result.
Does anyone know what might be the cause of this or what I should check?