For A-PHY Profile 1, which is based on NRZ Physical Medium Dependent (PMD), the A-PHY specification provides eye diagrams for all supported gears (G1-G3). For Profile 2, which is based on PAM, eye diagrams are not appropriate.

Power Spectral Density (PSD) limits are specified for all gears, along with requirements for supporting mandatory test modes for transmit jitter and linearity to fully characterize the transmitter.

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