HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Comment
Jon Titus
User Rank
Blogger
Re: Part IV: Fundamentals of Digital Debugging
Jon Titus   1/19/2012 5:53:44 PM
NO RATINGS
Q:  how do you select bandwidth for an oscilloscope?

 

A:  Check manufacturer's data for either a bandwidth number of a number-of-samples-per second number.  The bandwidth indicated the frequency at which a signal appears at half its actual amplitude (the -3 dBpoint).  So, if you have a scope with a 200 MHz bandwidth, you can probably use it for accurate amplitude measurements up to about 160 MHz (my guess) or perhaps a bit higher.  The signals will still provide good timing information at higher frequencies.  If you see a samples-per-second value, say 1 Gsamples/second, I'd use 1/10th of that as the bandwidth.  That's my rule of thumb.  Watch the specs carefully, though, because sample rates can decrease as you turn on more analog channels.  If you have big bucks to spend have a sales rep stop by for a hands-on demo with your signals.



Partner Zone
Latest Analysis
A Finland-based company has introduced what it claims is the first smart door lock that can be powered from energy harvested from a mobile device.
This charts show the pros and cons of five drive-train technologies.
A UK-based consortium comprised of the Centre for Process Innovation, Merck, and Polysolar are working on a design for integrated photovoltaic windows.
A new development kit expedites proof-of-concept for applications requiring an ultra-thin force or pressure sensor.
A researcher from The Ohio State University has designed objects that harness vibrations from the movement of swaying buildings or bridges to provide alternative energy.
More:Blogs|News
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Jan 11 - 15, Designing ARM Devices Using Segger Tools
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7 | 8 | 9


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Technology Marketplace

Copyright © 2016 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service