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Supporting CEI-56G/400GbE

Anritsu brings higher speeds to server and network equipment

Anritsu Singapore – With the May 28 release of its new MP1861A MUX and MP1862A DEMUX modules for the MP1800A Signal Quality Analyzer, Anritsu Corporation is strengthening the functions of its MP1800A 32G BERT to support 56G and 64G BER measurements required for evaluating high-speed serial transmission*1 devices, such as SERDES*2. When used in conjunction with the MP1800A, these two new modules support generation of NRZ Data and BER measurements up to 64.2 Gbit/s. In addition, support for Jitter Tolerance and Bathtub Jitter measurements meets the recommendations of the latest CEI-56G*3 and 400GbE*4 standards.

These standards for new high-speed interfaces are currently being examined to help speed-up server and network instruments. PHY devices, such as SERDES, used as these high-speed interfaces use measurements such as BER, Jitter Tolerance, Bathtub Jitter, as key indices of signal integrity in evaluating higher speeds.

By strengthening the functions of its MP1800A series, Anritsu expects to play a major role in bringing higher speeds to server and network equipment.

Development Background

Traffic volumes at data centers are exploding due to the rapid spread of cloud computing services. To increase the transmission capacity between servers and network equipment, conversion to parallel lanes, increasing serial transmission speeds, and adoption of PAM transmission*5, are all being actively developed; IEEE is examining a switch from 100GbE to 400GbE, while the Optical Internetworking Forum (OIF) is examining new-high-speed interfaces, such as upgrading from CEI-28G to CEI-56G.

The above-described communications standards use high-speed serial transmission devices, such as SERDES, and optical transceiver modules. The BER, Rx Jitter Tolerance, and Tx Bathtub Jitter characteristics are key quality standards in assuring device design margins and compatible connectivity as speeds become faster, requiring development of measurement instruments supporting accurate measurements of these characteristics.

To meet these needs, Anritsu has developed the new MP1861A MUX and MP1862A DEMUX for its popular MP1800A series of signal quality analyzers used worldwide to support strengthened signal quality evaluations in the 56-Gbit/s band.

Product Outline

Anritsu’s MP1800A Signal Quality Analyzer series is a plug-in, modular-type Bit Error Rate Tester (BERT) simultaneously accommodating Pulse Pattern Generator (PPG), Error Detector (ED), synthesizer, and jitter generation modules. It supports simultaneous generation of synchronous signals and measurement of Bit Error Rates (BER) for up to 8ch by installing multiple 32G PPG and ED modules.

Combining the newly developed MP1861A 56/64 Gbit/s MUX with the 32G 2ch PPG option supports generation of NRZ Data signals at up to 64.2 Gbit/s. Similarly, combining the MP1862A 56/64 Gbit/s DEMUX with the 32G ED option supports reception and BER measurement of signals up to 64.2 Gbit/s. Expanding the 32G BERT to either 56G or 64G supports an easy switchover from 100GbE to 400GbE R&D. Additionally, joint use with the MP1800A series jitter generation modules supports generation of SJ*6 with a maximum amplitude up to 0.55UI*7 at a high 250-MHz jitter modulation frequency*8 at up to 2000UI. Dual Tone SJ*9(two different frequencies), RJ, BUJ and SSC, can also be injected independently and simultaneously. Moreover, Bathtub Jitter measurement at the DEMUX side is also possible while generating a jittered-Data signal from the MUX. This can be used to measure the Jitter Tolerance and Bathtub Jitter of high-speed serial transmission devices, such as SERDES, supporting CEI-56G and 400GbE with both high accuracy and sufficient margin.

Key Features

Wideband 56/64 Gbit/s

Supports latest CEI-56G, 400GbE, and FEC bit rates

Supports versatile range of 56G-band signal integrity evaluations

Automatic TJ/DJ/RJ/Bathtub Jitter, Eye Diagram, EYE Margin measurements Meets CEI-56G and 400GbE test requirements using Jitter Tolerance tests supporting SJ, RJ, BUJ, SSC, Dual Tone SJ, and Half Period Jitter (Even/Odd Jitter)

Handy, compact remote head

Gets close to DUT to reduce cable losses

2:1 MUX, 1:2 DEMUX

Expand MP1800A with installed 28G/32G 2ch PPG and 2ch ED to 56G and 64G with easy operation using Auto-alignment function to auto-adjust phase between PPG and MUX at bit-rate conversion

Excellent signal quality and Rx sensitivity

The MP1861A MUX has low intrinsic jitter*10 waveform of RJ = 200 fs rms (typ.) plus wide output over wide amplitude range up to 3.5 Vp-p; the MP1862A DEMUX has high input sensitivity of 25 mVp-p (typ., single-end, EYE Height) for high-accuracy measurement of semi-conductor chip characteristics.

High expandability

Multi-channel synchronous pattern generation and simultaneous BER analysis for up to 4ch with easy expansion of channel number for future-proof equipment investment

Target Markets and Applications


Makers of high-end servers, storage and communications equipment; parts makers.


R&D into high-speed serial transmission devices, optical transceiver modules, optical devices.


*1 High-Speed Serial Transmission

Technology for converting Data signal to serial signals supporting fast, long-distance transmission.


Conversion circuit between serial and parallel transmission methods used in high-speed communications equipment and computer/server buses; unlike general parallel transmission using separate Data and Clock lines, SERDES serializes the Data signal down one or several lines to support fast, long-distance transmission.

*3 CEI-56G

Standard supporting 56-Gbps transfers for electrical interfaces for interconnects now being examined by Optical Internetworking Forum (OIF).

*4 400GbE

Standard under investigation by IEEE802.3bs for Internet use supporting transfer of 400 Gbits of data per second (400 Gbps).

*5 PAM Transmission

PAM (Pulse Amplitude Modulation) increases transmission capacity using amplitude modulation.

*6 SJ: Sinusoidal Jitter

Jitter with sine waveform.

*7 UI: Unit Interval

Unit indicating time; 1UI = 1 clock period.

*8 High Jitter Modulation Frequency

Jitter modulation signal with high modulation frequency.

*9 RJ, BUJ, SSC, Dual Tone SJ

Abbreviations for different jitter types classified according to source and character.


Random Jitter—Close to normal distribution over wide bandwidth with unbounded characteristics.


Bounded Uncorrelated Jitter—Jitter occurring randomly with no correlation to data and bounded limits.


Spread spectrum clocking—technology for impressing jitter on reference clock signal to mitigate EMI.

Dual Tone SJ:

Sine wave jitter modulation component like SJ; with two SJ waveforms, second SJ component called Dual Tone SJ.

*10 Intrinsic Jitter

Jitter generated by measuring equipment itself due to effects of thermal noise without jitter modulation.

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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