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,