如何用90000示波器来研究光纤上的突发模式传输

各位大家好，我们现在正在购买9000或90000示波器中的一个，我想在本示波器N5384A或E2688中询问有关高速串行解码功能的信息。
我们的问题是我们希望使用此功能来研究光纤上的突发模式传输。
我们的链接速度是640mbit，问题是帧正在爆发。
例如。
在线有很长的空闲时间，没有任何边缘过渡。
要恢复时钟，突发有140 0-1个转换，然后是特定的对齐字符。
之后所有数据都是8b / 10b编码。
框架的大小高达20字节所以我的问题是 - 是否可以触发此类流并使用高速软件对其进行解码？
我在数据表中读到，“当你选择PLL时钟恢复时，时钟恢复算法需要一些时间在每条记录的开头锁定数据。这个时间间隔无法查看或分析”。
我实际上希望在屏幕上的流前看到我的140个转换。
那可能吗？
另一个问题 - 如果我知道我的频率并选择恒定频率的CDR，那么示波器能够从前几个边缘同步并搜索对齐字符吗？
我知道我的描述有点令人困惑，所以我已经准备好了解具体的问题。
谢谢。



     以下为原文

  Hello everybody,
We are now going in purchase of one of 9000 or 90000 Oscilloscopes, and I wolud like to ask communicaty about High speed serial decoding feature in this oscilloscopes N5384A or E2688.  
Our problem is that we would like to use this feature to investigate our burst mode transfer over fiber optic.
Our link has the speed is 640mbit, and the problem is that frames are coming in bursts. E.g. there are long idle times on line, without any edge transition. To recover the clock, the burst has 140 0-1 transitions and then specific align character. Afterwards all data is 8b/10b coded. the frame is up to 20bytes in size  
So my question is - is it possible to trigger on such stream and decode it with High speed software? I read in datasheet, that " When you choose PLL clock recovery, the clock recovery algorithm requires some time at the start of each record to lock to the data. This interval cannot be viewed or analyzed". I actually would like to see my 140 transitions in front of the stream on the screen. Is that possible?  
Another question - if I know my frequency and choose constant-frequency CDR, will Oscilloscope be able to synchronize from first several edges and search for alignment character?
I know that my description is a little bit confusing, so I'm ready for specific questions.

Thank you.