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Launch of Market-Leading 116-Gbit/s PAM4 Error Detector for Evaluating 400 and 800GbE Transmissions


Signal Quality Analyzer-R MP1900A

Anritsu Corporation (President Hirokazu Hamada) is starting sales of its PAM4*1 Error Detector (ED) supporting market-leading 116-Gb/s bit error rate tests*2. This new module for the Anritsu Signal Quality Analyzer-R MP1900A series is the only instrument to achieve error-free measurement of PAM4 signals at 116 Gbit/s with industry-best operation bit rates and high Rx sensitivity performance. Combination with the previously released MP1900A series PAM4 Pattern Generator supports high-accuracy BER measurements of PAM4 signals.


With the spread of next-generation 5G mobile communications and Cloud services, data communications traffic is expected to increase exponentially. In addition, data centers supporting fast and large-capacity traffic are switching to the 400GbE*3 communications standard using the 53.125-Gbaud PAM4 x 4 lane method, and are also investigating the future switch to 800GbE*4 using 8 lanes.

Since the PAM4 method representing data with four amplitude levels has gaps between signal levels of just 1/3rd that of the two-level NRZ*5 method, measuring instruments for evaluating signal quality must have much higher input sensitivity performance than previous models. Moreover, in addition to fast speeds, the impact of transmission path losses in printed circuit boards, cables, components, etc., on measurement results cannot be ignored. Evaluating the genuine performance of the measured product not only requires excellent fundamental performance, such as sensitivity and bandwidth, but also requires a highly integrated solution with functions such as clock recovery*6 and an equalizer*7 for correcting loss effects.

To meet these needs, Anritsu has developed this ED with built-in clock recovery and equalizer to implement a PAM4 BER measuring instrument with market-leading high performance.

[Product Development Outline]

The market-leading Signal Quality Analyzer-R MP1900A is a bit error rate tester for communications speeds of 400G and faster, supporting high-speed signal generation and signal performance analysis.

With a built-in high-bandwidth and high-input-sensitivity Rx circuit, the newly released PAM4 ED MU196040B module supports error-free measurement of 100-Gbit/s PAM4 input signals even at a low input amplitude of just 36 mV typ. Furthermore, the built-in clock-recovery and equalizer functions support high-reproducibility jitter stress and ISI stress tests of transceiver input circuits using an easily configured equipment setup.

[Click here for MP1900A PAM4 BERT.]

[Target Markets and Application]

  • Target Markets: Makers of 400GbE/800GbE communications equipment and devices
  • Applications: Evaluating bit error rate of 400GbE/800GbE communications equipment and devices

[Technical Terms´╝Ż

*1 PAM4
Abbreviation for 4-level Pulse Amplitude Modulation (PAM) transmission method controlling changes in voltage amplitude (pulse height); PAM4 transmits 2 bits of data using 4 levels in one time slot

*2 Bit Error Rate Test
Digital signal bit error rate test

*3, *4 400GbE, 800GbE
Communication standards defined and tested by IEEE

*5 NRZ
Abbreviation for Non-Return-to-Zero; one method for representing digital signals

*6 Clock Recovery
One technology used by digital transmissions used to extract only clock from received data signal with superimposed clock

*7 Equalizer
Signal conditioning (adjustment) technology used by digital transmissions to optimize frequency characteristics of transmitted signal

For further information please contact:

Anritsu Pte Ltd
11, Chang Charn Road
#04-01 Shriro House
Singapore 159640
Tel : 65-62822400
Fax :65-62822533
Contact Us for more information.

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