Design Con 2015

zeeglen

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CC&BW

Old-timer who grew up with vacuum tubes and therefore have been amazed and fascinated by the many advances in the electronics industry since.


zeeglen

's contributions
  • 12.01.2014
  • Bad-bulb finder fixes Christmas lights
  • "this tester won't help you find a bulb whose shorting bar has activated" Well, if the shorting bar has activated this tester would not be required for further testing, would it?
  • 10.03.2014
  • The scope...from Hell!
  • I would laugh if this was not so scary - read your review on Amazon just this morning, and only 6 hours later am already seeing ads for the DPO2024B on farcebook. Corporate USA is watching me...
  • 10.03.2014
  • The scope...from Hell!
  • Wonderful review - tells it like it is! I think a big part of the problem is user interfaces designed by those who have not have much experience using oscilloscope user interfaces. Growing up with the experience gained from the UI of video games is no substitute for growing up using oscilloscopes. Hopefully your observations and suggestions for improvement will result in furthering of their future skills.
  • 10.03.2014
  • The scope...from Hell!
  • Right! Except when the only floppy-equipped machines in the corp are the scopes. Try copying a screen image into a word file when the PC does not have a floppy drive. And no PC in the entire corp has a floppy drive. Now what?
  • 10.03.2014
  • The scope...from Hell!
  • To which the bean-counter response is "You did great on your last project with that same scope. Why do you need a new scope for your new project?" I guess one has to fail substantially before the need for decent test equipment gets noticed - in a negative way.
  • 10.03.2014
  • The scope...from Hell!
  • Oh yeah, did the self-cal many times. No improvement. I suspect the self-cal was simply a quack panacea that did nothing.
  • 10.03.2014
  • The scope...from Hell!
  • However, just this morning turned on the bench and one of the Attens no longer boots, blank screen after several power cycles. Both were purchased at the same time, so with any luck the other will fail shortly and then corporate will be forced to buy me a new scope. This time I might even get a say in what I need. And I think I will now make a video of a teardown of an Atten scope - with a BASEBALL BAT!
  • 10.03.2014
  • The scope...from Hell!
  • That would involve convincing corporate bean-counters that not all scopes are alike, even the ones purchased through ebay with floppy disc screen capture.
  • 10.07.2014
  • EMC pre-compliance testing ups success rate, part 2 of 3
  • Good description of outdoor OATS. I've seen temporary OATS set up in a corporate parking lot (well away from vehicles). Interesting outdoor OATS experiences are trying to work in the middle of a winter ice storm when the antenna mast keeps freezing up - the tent really should cover the mast too. For a description of a "Cheaper Indoor Setup" in a reduced-ambient basement see http://edn.com/electronics-blogs/tales-from-the-cube/4316136/RF-emissions-and-FCC-Part-15-EMI-woes-and-cures . This technique does work if done carefully.