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Keysight Technologies Introduces Bit Error Rate Contour in DDR4, LPDDR4 Memory Measurements


New BER Contour Tool Helps Ensure Valid and Accurate Data Transfer


  • Make JEDEC timing and voltage data input valid window measurement on DDR4 command and data signal
  • Display eye contour up to 1e-21 and highlight eye contour of interest

SANTA ROSA, Calif., April 5, 2016

Keysight Technologies, Inc. (NYSE: KEYS) today introduced a new bit error rate (BER) contour analysis tool that helps memory designers perform DDR4 and LPDDR4 JEDEC compliance measurements. Designers are now able to make data valid window measurement with components of noise and jitter to ensure valid and accurate data transfer. The BER contour analysis tool is a capability added to the E2688A Serial Data Analysis software and runs on Keysight Infiniium S-Series, 90000A, V-Series and Z-Series oscilloscopes.

Historically, double data rate (DDR) has defined its timing specifications with a belief of a zero BER. Latest DDR technology offers data rates of 3.2Gb/s or higher. Each picosecond now matters and can be the difference in passing and failing bits. At these high data rates, noise and jitter affect the signal integrity. Measuring and understanding the components of noise and jitter can enable designers to maximize the margin to ensure valid and accurate data transfer. The timing parameters specific to the BER contour analysis in accordance to the JEEC specification are timing data input valid window (TdiVW) and voltage data input valid window (VdiVW).

"The new BER contour software tool uses accurate algorithm to measure jitter and noise to compute statistical measurement of the DDR data valid window," said Dave Cipriani, vice president and general manager of Keysight's oscilloscope business. "This helps customers quantify the bit error rate and ultimately increase the margin of the DDR memory system."

Additional information about Keysight's BER contour tool is available at Product images are available at

U.S. Pricing and Availability

The Keysight BER contour tool is available now as an added feature to the E2688A Serial Data Analysis/Mask Testing with Clock Recovery software which would require the N8823A EZJIT complete license. The E2688A tool is currently priced at $8,951 and the N8823A software is priced at $12,000.  

About Keysight in Digital Test

Keysight's solutions for digital applications are driven and supported by Keysight experts who are involved in various international standards committees. Keysight experts are active in the Joint Electronic Devices Engineering Council (JEDEC), PCI Special Interest Group (PCI-SIG®), Video Electronics Standards Association (VESA), Serial ATA International Organization (SATA-IO), USB Implementers Forum (USB-IF), Mobile Industry Processor Interface (MIPI®) Alliance, Ethernet standards (IEEE 802.3), Optical Internetworking Forum (OIF) and many others. Keysight is committed to involvement in standards groups and related workshops, plugfests and seminars to ensure the right test solutions are created to meet customers' evolving needs.

About Keysight in Software

Keysight software is downloadable design, test and measurement expertise. From first simulation through first customer shipment, Keysight software tools enable engineering teams to accelerate from data to information to actionable insight. Additional information is available at Download free software trials at

About Keysight Technologies

Keysight Technologies (NYSE: KEYS) is a global electronic measurement technology and market leader helping to transform its customers' measurement experience through innovations in wireless, modular, and software solutions. Keysight's electronic measurement instruments, systems, software and services are used in the design, development, manufacture, installation, deployment and operation of electronic equipment. The business had revenues of $2.9 billion in fiscal year 2015. Information about Keysight is available at

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Janet Smith, Americas
+1 970 679 5397
Twitter: @KeysightJSmith

Sarah Calnan, Europe
+44 (118) 927 5101

Connie Wong, Asia
+852 3197-7818