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ADV7391

Category: Hardware
Product Number: ADV7391

Hello,

 

I am using the ADV7391 in monochrome NTSC 640X480 NTSC SD square pixel (YCrCb) mode.

I use the following pattern :

White level at column 0, While level at the middle of the pattern and White level at the column 639 (the others comumn set to black).

At the scope, I see that these 3 stripes (same white level) don't have the same electrical level. At the first and last columns, I see that my white level is reduced.

Why don't I have the same electrical level for these 3 identicals white stripe ?

Thanks in advance,

Best regards,

HHL