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preemphasis |
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preemphasis [prē′em·fə·səs] (electronics) A process which increases the magnitude of some frequency components with respect to the magnitude of others to reduce the effects of noise introduced in subsequent parts of the system. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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With three mouse clicks, the eye diagram of a 30-inch long version of the microstrip above was simulated (FIGURE 3) and in one mouse click, the improvement when adding 50% pre-emphasis was simulated (FIGURE 4). In particular, the device allows users to tailor signal integrity by fine-tuning transmitter pre-emphasis, receiver equalization and output voltage swing through over 36 programmable settings to optimally offset system-specific backplane and interconnect losses. This includes multiple pre-emphasis and amplitude levels on the transmit side, adjustable equalization on the receiver side, and impedance control on both sides, for each of the serial channels. |
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