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How do I determine the Rise Time of my Sampling Head for my sampling scope? Only the bandwidth is specified.

Question :

How do I determine the Rise Time of my Sampling Head for my sampling scope? Only the bandwidth is specified.

Answer :

The gausian definition is used for the sampling scope, so the formula is: T_rise (10-90%) = 0.339 / BW.


In other words, a sampling head with a 3dB bandwidth of 30 GHz would have a rise time of 11.3 ps (for 10 to 90%).


For the 20 to 80% risetime the formula would be: T_rise (20-80%) = 0.223 / BW, which is 7.43 ps rise time.


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FAQ ID 60706

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