Hi Scott,
I’m sorry I didn’t realize you were also the same person we have been emailing.
I just sent a follow up email mentioning that based on my most recent understanding I don’t think there is an issue with the processing. I think the reason you see the “peak” or “corrupted data” at the 5MS/s rate is that you are centered at 100kHz, and the 0Hz (DC) feedthrough is coming into your spectrum. The filtering in the API is not sharp enough at that sample rate to filter out the 0Hz response. I recommend a post processing filter if you want to remove the 0Hz response, or reducing the sample rate to 2.5MS/s or below such that additional filtering helps remove the 0Hz feedthrough.
Does this sound like an accurate take on the information you have provided? If yes, then I believe the API is likely working nominally on your system.
I look forward to your response.
