EEVblog #981 (EEVacademy #1) - Introduction To Digital Logic
NEW screencast type tutorial! Let me know what you think. NOTE: The plan is at least several of these tutorial videos per week consistently. So on my main channel that frequency could swamp the other content, hence considering a new channel.
An introduction to digital logic, digital vs analog, logic gates, logical operators, truth tables, timing diagrams, and the dreaded boolean algebra.
Why do digital oscilloscopes appear noisier than traditional analog oscilloscopes?
Dave busts the myth that digital scopes are noiser than analog scopes, and demonstrates what inherent advantages digital scopes can have over analog scopes in terms of true waveform capture. And also why your analog scope may be hiding important signal detail from you.
Demonstrations of how memory depth, analog bandwidth, averaging, and intensity graded displays can all effect the signal detail you see on your digital oscilloscope.
And how long exposure camera shots on analog oscilloscopes can reveal detail you can't see with your eyes.
Demonstrations are done on the new Tektronix MDO3000, the Rigol DS1052E, the Tektronix TDS220, and Tektronix 2225 analog oscilloscope.
Previous video on common mode noise measurement: https://www.youtube.com/watch?v=ImyUB3_n9fw
Discuss on the Forum here: http://www.eevblog.com/forum/blog/eevblog-601-why-digital-oscilloscopes-appear-noisy-download/
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Test footage from the first run Kickstarter developer prototype 360cam 360 degree waterproof HD camera from Giroptic
As you can see, the quality isn't that great, and the audio is terrible, this came directly out of the camera. Not sure if it's a PEBKAC or a genuine issue. But it is a first run developer prototype.
NOTE: There are some reports the 360 feature only works on Google Chrome
Review footage here: https://www.youtube.com/watch?v=p6oYaFweigc
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Dave shows you how he built his own acoustic sound absorption panels for his recording studio using Tontine Acoustisorb 3 material.
Data on the material is here:
http://www.tontineinsulation.com.au/technical-data
More retro computer time!
Repair of a 1992 vintage Amstrad NC100 Notepad
Forum Topic:
http://www.eevblog.com/forum/blog-specific/eevblog-385-amstrad-nc100-notepad-repair/
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Dave looks at the $25 ANENG AN8008 Multimeter
It has some unusually low ranges making it ideal for electronics use. Or is it?
http://amzn.to/2tq68UO
Forum: http://www.eevblog.com/forum/blog/eevblog-1007-is-a-$25-multimeter-any-good/
Previous discussion: http://www.eevblog.com/forum/testgear/an8008-us-$19-10000count-1uv-0-01ua-0-01ohm-resolution-meter/
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What's inside the ICP/IEI industrial rack mount computer Dave got from auction?
Does it boot?
Forum Topic: http://www.eevblog.com/forum/blog/eevblog-458-industrial-computer/
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Another mystery teardown.
Forum: http://www.eevblog.com/forum/blog/eevblog-967-mystery-teardown/
SPOILER:
A Philips PM5639 Colour Analyser Teardown
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