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Question:how to expand frecuente range of a Digital Scope

 
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nebisman



Joined: 13 Apr 2002
Posts: 285
Helped: 1
Post05 Feb 2003 5:31   Question:how to expand frecuente range of a Digital Scope
I have a 20MhZ digital scope with pc interface. Iwant info about how to expand it frecuency range by software. I know that for repetitive sampling for static signals this is posible by subsampling.

Any info very appreciated

thanks
nebisman
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flatulent



Joined: 19 Jul 2002
Posts: 4860
Helped: 288
Location: Middle Earth
Post05 Feb 2003 5:46   analog chanel limits
It is very likely that the analog amplifiers before the ADC will limit your bandwidth. You can try making a sampling circuit before the scope. This will alias down the signal to be within the amplifier bandwidth. Many years ago Tektronix made such a box for their analog scopes.
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