The ADV7802 decoder has limited frequency response at 30 MHz. I have tried driving the decoder with different filter impedances, peaked the response of the input signal with amplitude equalization, and added a buffer for low impedance drive. The 30 MHz. response is always 1.5 - 2.0 dB down at 30 MHz. relative to the multiburst signal applied. The input signal is measured with a scope probe and the output freq response measure with an SDI waveform monitor.
Any ideas to correct this limitation?
The setup file I am using is attached.