The GTM RX has the ability to receive serial data using two different modulation schemes: NRZ and PAM4. NRZ signals contain one bit of information per symbol while PAM4 signals contain two bits of information per symbol. Using PAM4 modulation doubles the transmitted data bandwidth while maintaining the same unit interval (UI). Use the Versal ACAPs Transceivers Wizard to program the GTM RX to a desired signal modulation. See Rate Change for modulation changes in run time.