Thanks, Chen, We are working your recommendations in the following order and will get you the results when we implement them: Dump our register settings and send them to you. Perform the SW reset prior to the SYNC. Perform the RAMP SYNC test. Scope traces of the SYNC as close to the ADC pins as possible. SEE QUESTION BELOW. If we can find a suitable location, we will try to terminate the SYNC with a 50 Ohm resistor. For #4, since we already sent you the scope traces showing SYNC, can you please tell me what concerns you have and what specifically you might be looking for in the waveform? E.g., do you want to see them relative to the sample clock? Do you want to see both ADC's SYNCs on the same trace, etc.? Regards, Bob
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