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
Sensor deployment in automated factories should be done slowly and conservatively, otherwise engineers may face the loss of hundreds of thousands or even millions of dollars, an Internet of Things expert will tell attendees at the upcoming Design & Manufacturing Show in Minneapolis.
A new proof-of-concept robot from Harvard's Wyss Institute shows that it may one day be possible to build sophisticated autonomous robots without any hard components.
Mobile technology is slowly gaining ground on the plant floor, even with indications of high ROI.
Perfection is a laudable, but ultimately unattainable, goal, even for the world's most successful consumer electronics company. You know the hits; here are Apple's all-time greatest misses.
Siemens' new version of Imagine Lab was designed to help the automotive and aerospace industries meet environmental mandates.
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.
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7 | 8 | 9 | 10


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