Anritsu to demonstrate complete PAM4 signal simulation system

Anritsu to demonstrate complete PAM4 signal simulation system

Technology News |
By eeNews Europe

PAM (Pulse Amplitude Modulation) is one of the most promising techniques under development by telecoms equipment manufacturers and component suppliers as they strive to meet customers’ requirements for data rates as high as 100Gbps in the backplane and in server-to-server connections.

Anritsu’s demonstration system implements PAM4 modulation in a signal simulation on the Anritsu MP1800A signal quality analyser (SQA) alongside its MZ1834A PAM4 converter. Signal analysis is implemented through LeCroy’s 65 GHz LabMaster Scope.

This system may be used by R&D engineers to verify the transmission capabilities of various media – including even copper cable for very short links – providing for multi-level signal generation with an adequate opening in each level’s eye. To achieve this, it is essential that the original signals be of high quality, with quick rise/fall times and low jitter, and that the SQA be capable of managing channel synchronization on generation, while offering inter-channel skew control. R&D engineers also need to tune the multiple eye openings in the resulting signal, a feature that should be provided by the SQA.

The provision of multi-level signal generation for PAM testing is best achieved by adding dedicated modules which offer a complete array of pre-set coupled connections, allowing engineers to simply input multiple electrical differential signals and get out a high-quality, multi-level PAM output signal. Anritsu’s demonstration system shows how this capability can be provided by combining the MZ1834A PAM4 converter with the MP1800A SQA. The company will also soon offer the MZ1838A, a PAM8 converter supporting a three-channels modulation compared with the MZ1834A’s two channels.

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