驱动强度对上升时间有什么影响

G，
您应该使用IBIS模型和信号完整性模拟器。
阻抗匹配，pcb传输线的质量，终端的电容和电感将极大地影响信号的形状。
测量装置也会影响您在示波器上看到的信号 - 通常测量基本上是不可能的（您可以看到探头的效果及其接线，由信号激发）。
没有这么简单的结论是有效的（即使是远程的）。
信号完整性是一个独立的领域，全职工程师获得了不错的薪水。
http://www.google.com/url?sa=t&rct=j&q=xilinx%20signal%20integrity&source=web&cd=1&cad=rja&ved=0CCoQFjAA&url=http%3A%
2F％2Fwww.xilinx.com％2Fproducts％2Ftechnology％2Fsignal完整性％2F＆安培; EI = Wh35UYCiEKrqiwLYkYH4Bg＆安培; USG = AFQjCNEfN-wKIbjvliK2htYGNX25NbzlyQ＆安培; BV ...
Austin Lesea主要工程师Xilinx San Jose



以下为原文

g,
 
You should really use the IBIS models, and a signal integrity simulator.
 
The impedance match, the quality of the pcb transmission line, the termination's capacitance, and inductance, will greatly affect the shape of the signal.
 
The measurement means will also affect the signal you see on the scope -- often measuring is just basically impossible (you see the effects of the probe, and its wiring, as excited by the signal).
 
No such simple conclusion is valid (even remotely so).  Signal integrity is a field all its own, with full time engineers earning a good salary.
 
http://www.google.com/url?sa=t&rct=j&q=xilinx%20signal%20integrity&source=web&cd=1&cad=rja&ved=0CCoQFjAA&url=http%3A%2F%2Fwww.xilinx.com%2Fproducts%2Ftechnology%2Fsignal-integrity%2F&ei=Wh35UYCiEKrqiwLYkYH4Bg&usg=AFQjCNEfN-wKIbjvliK2htYGNX25NbzlyQ&bv...
 
Austin Lesea
Principal Engineer
Xilinx San Jose

谢谢奥斯汀的快速回复。
对我的知识感到羞愧。
我同意，你列出的所有因素都会影响信号。
测量装置也会影响您在示波器上看到的信号 - 通常测量基本上是不可能的（您可以看到探头的效果及其接线，由信号激发）。
当我们陷入困境时，我们会对信号产生影响。这一点也得到了我的支持。但是如果我们想知道生成的信号是否符合我们的要求，我们该怎么做？
谢谢



以下为原文

Thank you austin for your quick reply .
Shamed on my knowledge.
All the factors you listed affect the signal ,I agree.
 
The measurement means will also affect the signal you see on the scope -- often measuring is just basically impossible (you see the effects of the probe, and its wiring, as excited by the signal).
 
When we mesure ,we have impact on the singal .This point is also supported by me.But if we want to figure out if the generated singal  meets our request ,what we supposed to do?
Thanks 

模拟它。
并阅读有关如何最好的衡量。
Austin Lesea主要工程师Xilinx San Jose



以下为原文

Simulate it.
 
And read about how to best measure.
 
 
Austin Lesea
Principal Engineer
Xilinx San Jose