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Glen Chenier
Glen Chenier, Engineer, 5/17/2013   Comment now   8 comments
Gadgetech's recent blogs on test thoroughness reminded me how some faults are found only because a specific method is followed, along with a bit of luck. This tale also demonstrates the beauty of a four-channel scope that sees almost everything that goes on simultaneously.
Ramkumar Ramaswamy
Ramkumar Ramaswamy, PhD, Chief Scientist, 5/16/2013   Comment now   4 comments
Recently I was working on the design of a simple quadrature upconversion module for a Software Defined Radio (SDR) front-end. What it did was fairly straightforward -- take the baseband I and Q outputs from a direct-conversion receiver (an ADRF6850) and feed these to two modulators (the good old MC1496), configured as I and Q modulators, then combine ...
Michael Dunn
Michael Dunn, Editor in Chief, Scope Junction, 5/15/2013   Comment now   39 comments
In some previous blogs, we've discussed iOS apps, oscilloscope and other, as well as remotely controlling a scope from a device. Now, I want to get a cheap Android tablet to see what it can do in this arena. But you need to help me pick one.
Michael Dunn
Michael Dunn, Editor in Chief, Scope Junction, 5/14/2013   Comment now   51 comments
I really like microprocessors and microcontrollers, little chips with the only goal in life to do your bidding. And I keep wanting to do one interesting project or another, though never seem get around to it. But I plan to change that.
Shiv Balakrishnan
Shiv Balakrishnan, DSP & Test Expert, 5/13/2013   Comment now   12 comments
Engineers of a certain vintage (I won't say how old except you had to be around in the late 1970s or early 80s) might remember the Tek 4051 desktop computer, or the venerable Tek 4014 graphics display terminal. The graphics came in only one color -- green -- but the quality of the picture was superb, and these terminals were popular in engineering ...
Michael Dunn
Michael Dunn, Editor in Chief, Scope Junction, 5/10/2013   Comment now   52 comments
Believe it or not, every Radio Shack -- hell, almost every drugstore -- once had a tube tester sitting at the back, available for all to use. Pulling a bunch of tubes out of a malfunctioning radio or TV, and heading off to test them, was always an exciting little excursion!
most commented
51
Can You Lend Me an ARM?
Michael Dunn, Editor in Chief, Scope Junction, 5/14/2013
39
Choosing a Cheap Android – Help!
Michael Dunn, Editor in Chief, Scope Junction, 5/15/2013
12
The Direct View Storage Tube
Shiv Balakrishnan, DSP & Test Expert, 5/13/2013
8
4
Measuring (Small) Phase Errors With a Scope
Ramkumar Ramaswamy, PhD, Chief Scientist, 5/16/2013
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