FreeLists / si-list / [SI-LIST] Re: A question for the instrument guys on TDR and TDT

[Istvan Novak <istvan.novak@xxxxxxxxxxx>]

Chris,

The answer is yes (as long as the network is 'sufficiently' linear).  
The finite rise time
shows up as filtering, what happens in all simulations or measurements 
anyway,
even if we neglect the effect of risetime.  If you need the impedance of 
a power
distribution network, the quantization of the receiving instrument will 
set the noise floor.

Regards,

Istvan Novak
SUN Microsystems

Chris Cheng wrote:

>I can understand the merit of a step response and direct read out of =
>impedance profile.
>Will it be easy to also include a mode with a sharp pulse instead of =
>step for an impulse response ? If you have a circuit to generate a 35ps =
>step, can you use it to generate a 35ps pulse also ? I think there are =
>steps you can do to convert one to the other but a direct impulse =
>response is just too good to pass up.
>Network analyzer on the cheap.
>Thanks in advanced,
>Chris
>
>
>  
>

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