HDCOMP/TV DAC

Is there anyone help me ? I am using RDK03.00.00.00.

Hi,

Could you please explain why you need to change signal strength? Current signal strength is good enough for output.

Regards,

Brijesh Jadav

Hi,

We measure the signal and find the signal strength of TV is under 1 Vpp, and RGB signal level is over 0.7Vpp. This is why we need to modify the parameters to find tune the output signal.

Jack.

Hi,

Do you have THS7360 filter connected at the output of DAC? This is required otherwise signal strength can be low. Could you follow EVM to get the correct output?

Regards,

Brijesh Jadav

Hi,

Yes,  we have used THS7360 on the board and follow EVM design.

Jack

Hi,

Than there should not be problem with signal strength. What are you seeing, is signal strength low or not matching standard?

HI,

We measure TV and HDCOMP, but , the signal strength is low and we want to adjust them to match standard.

Hi,

Can you share the portion of the schematic which DAC output cirtuit?

regards

Brijesh Jadav

Hi,

Did you do the characterization. We recently did characterization and found some issues. Signal strength was low but not because of amplifier of something but because of some wrong Color Space Converter coefficients. This is solved and probably it should be available as a part of next EZSDK release. 

Hi,

We are doing characterization and find we can't have the standard signal strength for TV and HDCOMP. If we have the right value on TV,  HDCOMP will not have correct voltage. If we adjust the correct level on HDCOMP, TV will not have correct value. This is why we need to adjust some parameters and hope you could give us a hand.

Could you share us the location of modified ASAP ? Our testing is waiting for us to find out the solution.

Hi,

This solution is part of HDVPSS drivers which cant be shared publicly thats why i am asking you to wait till next release.