Agilent Technologies Introduces 28 Gb/s Multiplexer for J-BERT, ParBERT
New Tool Enables Accurate Characterisation of Next-Generation Serial Interfaces, Optimizing Design Margins
New SERDES physical interconnects, electrical interconnects in backplanes, and communication or storage networks will operate at data rates far beyond 12.5 Gb/s. For example, the Optical Internetworking Forum defined that Common Electrical I/O backplanes operate at data rates between 19.9 and 28 Gb/s; IEEE 802.3ba, 100GBASE-LR4, and -ER4 are operating at 25.78125 Gb/s; and 32x Fibre Channel is expected to operate at 28.05 Gb/s. Designing and characterising the physical layer performance of receivers and transmitters for these bit rates will require new test equipment capabilities. Agilent's 2:1 Multiplexer doubles the pattern generator data rate by multiplexing two generator channels. The Multiplexer extends the variable generator data rate of J-BERT N4903B up to 28.4 Gb/s and of ParBERT 81250A up to 27.0 Gb/s. To enable multiplexing on J-BERT, a second channel option of N4903B is available.
The Multiplexer allows accurate characterisation by providing excellent output signal performance with variable output amplitudes up to 1.8 Vpp; transition times of less than 20 ps (20%-80%); and intrinsic jitter of less than 1 ps rms. However, for jitter tolerance testing of receivers, the Multiplexer is transparent to jitter coming from J-BERT or ParBERT.
When used together with the Agilent 86100C Infiniium DCA-J oscilloscope, the Agilent BERTs with the 28 Gb/s Multiplexer provides the most accurate characterisation, enabling transmitter quality and receiver robustness.
"We are very proud to expand the industry's leading BERT solutions to the next speed class," said Jürgen Beck, general manager of Agilent's Digital Photonic Test product line. "By expanding the data rate range of our BERTs up to 28 Gb/s, we offer R&D and validation teams an affordable upgrade path without compromising our worldclass performance. We are committed to enable R&D teams release the next generation of robust highspeed digital interfaces for the communication, storage and computer industry."
Benefits of the Agilent N4876A Multiplexer include:
- accurate characterisation by generating pattern streams with variable data rates up to 28.4 Gb/s and excellent signal quality;
- small size frontend box that can be located closely to the device under test allowing for the shortest possible signal cables;
- emulation of stress conditions with calibrated jitter coming from the J-BERT;
- flexible frontend box, which extends the data rate of the ParBERT or J-BERT configuration as a pure generator or as a full BERT; and
- affordable frontend that can be added to existing Agilent's J-BERT N4903A /B or 81250A ParBERT setups.
Benefits of the second channel option of Agilent J-BERT N4903B include:
- easy userpattern setup, including PRBS and pattern sequences, on J-BERT's auxiliary data output;
- increased test flexibility with J-BERT's auxiliary data output channel, including multiplexing to higher data rates, control signal for sequence triggering, crosstalk testing, or when using external channel addition, emulating 3level signals or 2tap deemphasis, etc.; and
- options that can be upgraded now or later.
Additional information about Agilent's N4876A is available at www.agilent.com/find/n4876. Highresolution images are available at www.agilent.com/find/n4876_images.
Additional information about Agilent's J-BERT N4903B and the new second channel option is available at www.agilent.com/find/jbert.
Additional information about Agilent's ParBERT 81250A is available at www.agilent.com/find/parbert.
Agilent Technologies Deutschland GmbH
Agilent Technologies Inc. (NYSE: A) is the world's premier measurement company and a technology leader in communications, electronics, life sciences and chemical analysis. The company's 17,000 employees serve customers in more than 110 countries. Agilent had net revenues of $4.5 billion in fiscal 2009. Information about Agilent is available on the Web at www.agilent.com.
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