In this channel, we might like to send a different bit pattern ... with the “4” indicating four levels of pulse modulation. An eye diagram for a PAM4 signal is unusual, with three eye openings and ...

Fig.1: NRZ signal (top) and eye diagram (bottom). Pulse amplitude modulation builds upon this concept by encoding data across multiple voltage levels. PAM4 uses four levels. A PAM4 signal can appear ...

ENRZ modulation can be ... is to address all of the different applications,” he said. Figure 6. An XSR interface connects a serial data stream between a chip and an optical engine. Figure 7 shows a ...