[SI-LIST] SDA bandwidth

Hi all,

Have you got an idea of the required features (bandwidth + sampling rate) for a
SDA to analyse 10Gbits/s serial links ?

Bandwidth:
Thumbs rules for the bandwidth would lead me to choose 5 times the fundamental
frequency to see the 5th harmonics ie 25 GHz. But high speed devices have a rise
time of only 40ps, so the estimated bandwidth of such signals would rather be
0.5/30ps = 12 Ghz ... So, what to choose ?

Sampling rate:
Am I wrong if I say that with a sampling rate of 60 Gsamples/s, I
will capture an eye with only 6 points and therefore I will be able to measure
jitter with an accuracy of only 16 %. Should I need a higher sampling rate ?

Thanks.
Jean.

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