is there a change in video leakage with or without applying 0.5V DC bias?
I measured and saw a difference:
without bias: 2mV pk-pk
with bias: 300 mV pk-pk
the bias was applied using a 1.5V battery with voltage divider of 100 ohm and 200 ohm to achieve 0.5V bias. I used battery to have cleanest possible power supply.
I require the video leakage to be 2mV also with DC bias. is there any reason why I didn't get that?