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Re: Gluex doc 1131: response function



Hall D Electronics:

Somehow I didn't look deeply enough into the mails going around, but 
certainly  Gerard is correct  the rise of the step needs to be
sub 5ns anyway.  Otherwise you will not get the proper shape. - Mitch

Gerard Visser wrote:
> Hall D Electronics:
>
> Hi Yves,
>     Well, certainly if you use a "step" function with risetime of ~13 
> to 20 ns (as I think you said) it _will_ make a big difference. This 
> is already basically equal or greater than the preamp peaking time. 
> You should get a better pulse generator if you want to measure the 
> real step response. Something like <3ns risetime should be easy, yet 
> sufficient. Sincerely,
>
>     Gerard
>
> Yves Van Haarlem wrote:
>> Hall D Electronics:
>>
>> Hi Fernando,
>>
>> Thanks for the information. The step function goes over a capacitor 
>> into the preAmp, so one could consider it a delta function. I would 
>> not concider it urgent at all, it would be nice to compare to see if 
>> the rise time of that step function plays a big role.
>>
>> Cheers,
>>      Yves