3.1.3. PMA Tuning
For certain protocols, the adaptation sequence may not yield optimal performance over the temperature sweep. When temperature increases, the signal quality at the sampler degrades and the vertical and horizontal eye opening at the sampler degrade. To compensate for these degradations, RX analog front end (AFE) parameters and decision feedback equalization (DFE) must be positioned so that the adaptation results in an optimal performance with environmental changes.
PMA tuning methodology optimizes link performance to reduce the bit error rate (BER).
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