Anritsu shows PAM4 test set-up at ECOC in London
Anritsu will demonstrate a PAM4 signal simulation system on its stand at the ECOC 2013 exhibition in London (22-26 September).
PAM (Pulse Amplitude Modulation) is a high speed data communictaions protocol being developed to support data rates of 100Gbit/s over optical fibre and copper 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), pictured, alongside Anritsu’s new MZ1834A PAM4 converter. Signal analysis is implemented through LeCroy’s 65GHz LabMaster Scope.
Transmission requires 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.
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 this capability by combining the MZ1834A PAM4 converter with the MP1800A SQA.
At ECOC 2013, Anritsu will also be demonstrating DP-QPSK modulation for high-speed backhaul applications, a 100GbE optical test laboratory, and the MT908x Access Master OTDR.
“The quality of the simulated signal is a key factor in the successful verification of new transmission techniques such as PAM4 and PAM8 modulation,” said Alessandro Messina, Business Development Director for optical test instruments at Anritsu.
“This PAM4 demonstration at ECOC shows how a high-quality signal generation system can help R&D engineers to reduce the effort and time required to implement a test set-up for backplanes running at up to 100Gbit/s.”