Transcription of Keysight Presenters: 400G/PAM-4 designs Rob Sleigh Steve ...
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Keysight Presenters: 400G/PAM-4 designs Rob Sleigh Steve ...
How to overcome test challenges in Keysight Presenters: . 400G/PAM-4 designs Rob Sleigh Steve Reinhold February 15, 2017. Keysight Technologies 2017. Agenda Introduction o Why use Pulse Amplitude Modulation 4-Level (PAM-4)? o Review Standards using PAM-4. Output (Transmitter) Characterization o Key Optical PAM-4 Measurements o Key Electrical PAM-4 Measurements Input (Receiver) Characterization Summary Q&A. Overcoming test Keysight Technologies 2017 challenges in 02/15/2017. 400G/PAM-4 designs Page 2. Why does the industry need PAM-4? Enables higher data throughput NRZ > 28 Gb/s limits trace length or increases cost PAM-4 packs 2 bits / symbol Halves the channel BW needs Allows designers to develop products to fit cost structure of available channel technologies.
Page Overcoming test challenges in 400G/PAM-4 designs Current Draft Standards and IAs using PAM-4 • 200G/400G Ethernet (802.3bs) (Draft 3.0) •200GBASE-FR4/LR4 4 lanes of 26.5 Gbaud WDM on 1 …
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