M8000 Series Highlights

Take the Express Lane to Design Verification

Simplified, time-efficient testing is essential when you are developing next-generation computer, consumer, or communication devices. The Keysight M8000 Series is a highly-integrated bit error ratio (BER) test solution for physical layer characterization, validation, and compliance testing. With support for a wide range of data rates and standards, the M8000 Series provides accurate, reliable results that accelerate your insight into the performance margins of high-speed digital devices.

Shift into high gear with the M8000 Series and take the express lane to design verification.

  • Pulse amplitude modulation 4 (PAM4) and non-return-to-zero (NRZ) formats software-selectable using one piece of hardware
  • NRZ data rates from 2 to 64 Gbit/s pattern generation and error analysis
  • PAM4/6/8 data rates from 2 to 120 GBd pattern generation and up to 120 GBd error analysis (when used with a UXR-Series oscilloscope)
  • Built-in clock / data recovery and equalization from 2 to 120 Gbaud
  • Integrated de-emphasis and adjustable intersymbol interference (ISI)
  • Multi-channel capabilities
  • Flexible hardware ensures investment protection as your application needs change

Receiver Characterization and Compliance Testing

Keysight’s bit error ratio test (BERT) system enables the most accurate physical-layer design verification of high-speed communication and multigigabit digital interfaces. Our expert-level support will help you select the high-performance hardware, control software, receiver test, and automation tools needed to help you master your design.

Whether you are working on data center or computing interface technologies, Keysight BERTs offer the most comprehensive choices, from affordable manufacturing test to high-performance characterization and compliance test.

The Keysight BERT supports symbol rates up to 120 Gbaud with non-return-to-zero and pulse amplitude modulation 4/6/8 coding schemes. It also supports digital interfaces such as PCI Express®, USB, MIPI, Thunderbolt, DisplayPort, SATA / SAS, electrical and optical Ethernet 10G / 100G / 400G / 800G / 1.6T, OIF-CEI, Fibre Channel, and PON.

M800 BERT Family with Empty Slot

Key Specifications

Data Rate

2 to 120 GBd

Integrated Technologies

ISI, Clock Recovery, Equalization,


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Pulse Amplitude Modulation (PAM)

The 400 Gigabit Ethernet (GE) standards define four-level PAM (PAM4) multilevel signaling as a recommended modulation format to implement serial 400GE data center interfaces. This is an evolution from the two-state NRZ modulation used in 100GE. PAM4 effectively doubles the data rate for a link bandwidth at the expense of reduced signal to noise ratio (SNR).

You require new measurements to characterize impairments that were not an issue in previous NRZ designs. We can help you ensure accurate and repeatable results to accelerate the development of your PAM4 interface components and systems.

400GE FEC Infographic

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