nritsu Corporation is releasing two upgrades on

January 31, 2017 to strengthen the company’ s 32

On the other hand, the BER of the 4-level PAM4 signal is measured like the NRZ method by splitting into two binary signals at the PAM4 decoder. Furthermore, confirming the

Quality Analyzer MP1800A series.

correlation with simulation results requires use of an

The newly developed G0375A 32 Gbaud Power PAM4

Converter and G0376A 32 Gbaud PAM4 Decoder with CTLE support the PAM4 * 1 input tests and BER * 2 measurements

equalizer circuit such as a Continuous Time Linear Equalizer

( CTLE) and BER measurement of a signal corrected for transmission path loss.

defined in the next-generation 200GbE / 400GbE * 3 and CEI-

Anritsu expects that its signal source for implementing 32

56G * 4 standards.

Gbaud * 7 PAM4 BER measurements and BER measurement

solutions will play a major role in development of nextgeneration

Development Background

Faster communications speeds between servers and network devices are being investigated to help cope with the recent explosive increase in data traffic. The

200GbE / 400GbE next-generation Ethernet standard not only uses faster symbol rates and multiple lanes to increase transmission capacity per unit time but also used PAM

PAM4 communication standards.

Outline of PAM4 Signal Evaluation using G0375A / G0376A and MP1800A Series

The Signal Quality Analyzer MP1800A is a plug-in module type Bit Error Rate Tester; the built-in 32G multichannel

PPG and ED modules assure multichannel, high-quality signal generation and high-input-sensitivity measurement.

( pulse amplitude modulation).

The newly developed G0375A and G0376A are remote

Like the NRZ * 5 method, evaluation of PAM4 optical communications modules requires a high-amplitude test signal for direct-driving the optical modulator performing

heads for addition to the MP1800A series 32G PPG / ED to extend measurement support for both NRZ and PAM4 measurements using NRZ measuring instruments.

the electro-optical conversion. Additionally, evaluation of

Combining the G0375A with the 28G / 32Gbit / s PPG

EA Modulators * 6 must take non-linearity of the optical

MU183020A converts 32 Gbit / s NRZ signals to PAM4

output level into consideration and requires a signal source

signals to output a high-amplitude signal of 4.4 Vp-p

supporting independent adjustment of the PAM4 signal

( differential, max.). Additionally, the 3ch PPG

3Eye amplitude.

synchronization function for independent control of the

PAM4 signal 3Eye amplitudes enables high-reproducibility