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ADS1299測試訊號不正確

Other Parts Discussed in Thread: ADS1299

我利用EVM對ADS1299進行內部產生方波的測試,同時在ADS1299上接著邏輯分析儀,可是從邏輯分析儀獲得的數據跟EVM獲得的數據不一樣,請問發生什麼問題?我該如何才能從邏輯分析儀上獲得正確的輸出?

TI EVM

EXCEL (Channel 1)

Y ais:Voltages

邏輯分析儀

完整訊號圖

訊號放大圖

EXCEL(Channel 1)