Breaking News
User Rank
Re: 18 April 2014 Live Chat
Aeroengineer   4/18/2014 1:30:28 PM
Once the carrier is stripped out, there are going to be two remaining frequencies 10kHz and 15kHz.  One represents a binary high and the other the low.  I need to monitor the time the signal is either high or low, and I am looking to have .000001s resolution (I may have missed a 0in there).


I am thinking about passing it through a low pass filter, then doing a 64 point FFT with an overlapping moving window.  I will then have a threshold that I start a counter once a requency reaches a certain level.

Flash Poll
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Juggling a Cornucopia of Projects
Max Maxfield
Post a comment
I feel like I'm juggling a lot of hobby projects at the moment. The problem is that I can't juggle. Actually, that's not strictly true -- I can juggle ten fine china dinner plates, but ...

Karen Field

June 2014 Cartoon Caption Winner
Karen Field
Congratulations to "Wnderer" for submitting the winning caption for our June cartoon, after much heated conversation by our judges, given the plethora of great entries.

Jeremy Cook

Inspection Rejection: Why More Is Less in a Vision System
Jeremy Cook
Albert Einstein has been quoted as saying, "Everything should be as simple as possible, but not simpler." I would never claim to have his level of insight -- or such an awesome head of ...

Jeremy Cook

Machine Fixes That Made Me Go 'DUH!'
Jeremy Cook
As you can see in my bio at the end of this article, I work as a manufacturing engineer. One of my favorite things that happens on a Friday late in the afternoon is to hear my phone ring ...

Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)