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Noise in the DVI Output of ADV7511W

Hi,

We are using ADV7511WBSWZ for DVI Output in our board. The set up is as shown in the attached image.

The cables used for connection are shielded.

We have observed that, there are white blinking dots on the output (On Monitor).

We tried to display only one primary color(any of the three) bar on the screen, with darker color the dots are not visible, but with lighter shades of the same color( with mix of other two primary color) dots are visible.

Have anyone have come across this kind of issue ?

Please help us to solve this issue ASAP.

Thanks & Regards,

Nanjunda M

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  • FormerMember
    0 FormerMember

Finger touching a trace adds a small amount of capacitance to the line.  This capacitance maybe just enough to filter off any noise that is getting injected into the line.  Since the copper tape works this implies the noise source is electrostatic in nature, not magnet coupling.  I'd look for high dv/dt signals running close to the cable. 

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  • FormerMember
    0 FormerMember

Finger touching a trace adds a small amount of capacitance to the line.  This capacitance maybe just enough to filter off any noise that is getting injected into the line.  Since the copper tape works this implies the noise source is electrostatic in nature, not magnet coupling.  I'd look for high dv/dt signals running close to the cable. 

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