ADS1298ECGFE-PDK: ADS1298 Sampling rate

Part Number: ADS1298ECGFE-PDK

The sampling of ads1298 is not accurate.

I set HR mode and 1k SPS at CONFIG1 but, measured about 930 /sec on a PC.

when I changed register 1k SPS to 500 SPS, it was measured about 420/sec.

What are the factors that can affect the sampling rate?

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