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ADV7842 3D_Comb(TBC=Off) , Output picture has small waving noise issue at CVBS input.

Hello,

When I start 3D_Comb function, Output picture has small waving noise issue at when I used CVBS input.

However, this issue doesn't happen when I used Y/C input.

also, when I stopped 3D_Comb, this issue disappear even I used CVBS input.

System contens

3D_Comb = On

TBC=Off

64Mb SDR

It seems this issue is relating 3D Comb function.

How can I fix this?

Regards,

Bogey

Parents
  • Hi Matt,

    Now, I could check SW Driver(REPEATER) is working with 3D_Comb=ON.

    EVAL-ADV7842-7511 with SW Driver REPEATER doesn't have 3D_Comb noise issue.

    I think my 3D_Comb noise issue may be some test environment noise issue.

    My test environment is

    CVBC (NTCS source) --> EVAL-ADV7842-7511--> Momitor.

    I guess NTCS source had noise.

    How do you think?

    Regards,

    Bogey

Reply
  • Hi Matt,

    Now, I could check SW Driver(REPEATER) is working with 3D_Comb=ON.

    EVAL-ADV7842-7511 with SW Driver REPEATER doesn't have 3D_Comb noise issue.

    I think my 3D_Comb noise issue may be some test environment noise issue.

    My test environment is

    CVBC (NTCS source) --> EVAL-ADV7842-7511--> Momitor.

    I guess NTCS source had noise.

    How do you think?

    Regards,

    Bogey

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