The ML4039E is a full featured 400G BERT that can be configured as four channels of 56 GBaud PAM4 or 56 Gbps NRZ. Also, half rates of 28 GBd are supported in PAM4 and NRZ modes. The transmitters support all standard test patterns mandated by IEEE and OIF such as PRBS13Q, SSPRQ, PRBS31Q, etc.
Additionally, the user may program the TX to output a user- defined pattern up to 131 kb long.
In addition, the ML4039E supports transmitter and receiver equalization to overcome signal integrity impairments due to channel losses or reflections.