Using Schottky barrier diodes for D1 and D2 rather than common diodes reduces the low-level voltage on the bus, improving the noise margin.

使用肖特基二极管d1和D2，而不是普通二极管，为的是减少总线上低状态电压，改进噪声极限。

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You can think of SNR margin as the measure of quality of the service; it defines the ability of the service to work error free during noise bursts.

你可以这样理解一下，信噪比宽容度意味着服务质量；他表示允许提供服务的同时突发噪声并可以容错的参考数值。

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You can think of SNR margin as the measure of quality of the service; it defines the ability of the service to work error free during noise bursts.

你可以这样理解一下，信噪比宽容度意味着服务质量；他表示允许提供服务的同时突发噪声并可以容错的参考数值。

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