Sampling at twice the bandwidth will allow you to accurately extract
frequency information about a signal, or if all you were viewing were
sine waves. To view the actual waveform, however, you really want to
sample at at least 4x or 5x the bandwidth, or, even better, 10x the
bandwidth.
73!
Dan KB6NU
----------------------------------------------------------
CW Geek and MI Affiliated Club Coordinator
Read my ham radio blog at http://www.kb6nu.com
LET'S GET MORE KIDS INTO HAM RADIO!
On Apr 29, 2008, at Apr 29, 1:32 PM, Stephen Prior wrote:
On a related topic, does anyone have any experience of using the
usb types
of 'oscilloscopes' which appear on eBay- dual channel 60MHz
bandwidth and
150Mb/s sampling rate? It's a neat and cost-effective way of
displaying the
transmitted waveform for those of us without desk/bench room for a
'proper'
scope.
I've always been led to believe that sampling at twice the
bandwidth is a
decent decent rule of thumb and this one is better than that.
I'd be grateful for any advice from someone who has one.
Thanks
Stephen G4SJP
KX-1, K2, K3 almost!
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