we use the ADV7343 with the following register settings to generate a progressive picture with 24Bit RGB(0...255) input and RGB output on DAC1-3 Timing / and Picture on the Display look fine so far.
Now, we checked the voltage levels on the Video output DACs.
I measure a blank/black sigal with 300mV at DAC2+3 ( B and R) but have a 40mV Offset ( 340mV) on DAC1 (Green). The maximum amplitude is a 780mV when all data-inputs are "1". I see registers to adapt the gain of the DACs, but how could I correct this 40mV on one of the DACs, respcetivley what could be the reason for this undesired offset.