Re: DSO spec confusion
- From: payer1005@xxxxxxxxx
- Date: Wed, 26 Mar 2008 11:53:21 -0700 (PDT)
On 3月16日, 上午2时23分, Brett Pantalone <pantalone2....@xxxxxxxxx> wrote:
Hello,
I am a software engineer with some theoretical (but little practical)
knowledge of electronics. I'm shopping for an inexpensive (< $1000)
digital storage scope to use in my software consulting business and for
my personal hobby projects. I'm a little confused by the way these
scopes are specified, and I'm hoping someone can clear it up for me.
When a scope is advertised as, for example, 60MHz bandwidth, but has a
100 Msa/s sampling frequency, what does this mean? Doesn't Nyquist
dictate that the sampling frequency must be at least 120 MSa/s to
properly characterize a 60MHz signal?
Also, what about a scope advertised as 60MHz bandwidth, but 1 Gsa/s
sampling frequency? What do I get with the additional oversampling?
Most of my work will be with audio signals and digital data at
frequencies less than 1MHz, but I will occasionally want to verify clock
signals of 50MHz or more. What features and specifications should I
look for when shopping for a DSO?
Thanks for any advice you can offer.
-- Brett
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- From: Brett Pantalone
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