EDN's 19th Annual Innovation Awards Finalists
-- EDN, February 2, 2009
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&& PREVIOUS FINALIST | MAIN | NEXT FINALIST >> Category: Instruments Finalist: DPP12500A-4T four-tap digital pre-emphasis processor (Synthesys Research)  Signaling standards recently released and under development such as PCI Express Generation 2 and 3, SATA, DisplayPort, USB 3.0, and 10G Base-KR utilize transmitter side pre-emphasis to boost the high frequency content of the data stream, compensating for losses in the channel. The DPP 12500A-4T instrument-grade 4-tap digital pre-emphasis processor applies calibrated pre-emphasis equalization to a test pattern, emulating the transmitter function to allow for testing of receivers for either standards compliance or operating margin. The instrument can also be used in transmitter design, to characterize a pre-emphasis design on real signals before committing the design to silicon. Previous pre-emphasis processors supported only two taps, which limits the resolution, the company reports. Tap settings can be entered either as tap weights or as attenuation values in either percent or dB. “The Bode plot display runs in parallel with the time domain, allowing me to see the effects of tap weight changes on frequency response directly as I make them,” reports one user. For users who do not require 4-tap resolution, a 3-tap version is also available. |
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