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Hello,
1. AD9433
has a specified minimum encode rate of 10 MSPS
2. DSP Development Board has AC-coupled clock to ADC
3. DSP Development Board analog input is transformer coupled with about 0.4 MHz cutoff frequency (Mini-circuits ADT2-1T and ADT1-1WT).
so there are several reasons why acquiring of low frequency signals may not work. It would be no disadvantage to use minimum specified sampling frequency and resample the digital input, but transformer coupling can't be disabled by software. Generally SNR would be improved using a higher sampling rate and rate conversion, e. g. by a CIC filter.
Regards,
Frank
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Can you explain a little bit more about the AC coupling and transformer coupled ? or is there a place i could get more insight on the ADC working
Sorry I guess these are basic, i would appreciate if you could tell me so that i could document it :confused:
Thank you so much Frank You rule :):)
Honored Contributor
