Dave does an impromptu teardown and repairs his 125KHz RFID lab access card. And finds a use for his DSO Quad oscilloscope. Forum: http://www.eevblog.com/forum/blog/eevblog-539-rfid-tag-repair/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

1 minute tech tip! Dave shows how to remove sticker residue from test equipment without damage, using a plastic pencil eraser. No chemicals required! It also works for those troublesome security stickers. Handy for sprucing up equipment before resale on ebay. Forum: http://www.eevblog.com/forum/blog/eevblog-560-how-to-remove-sticker-residue-on-test-equipment/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/

Will Trump's Mexican border solar powered wall pay for itself? Dave runs the numbers to find out what the solar payback is. NOTE: These are BEST CASE (non-practical) figures that don't include any system losses from a single long line array like this, or anything to do with the changing wall topology, or increased maintenance costs etc. The cost to maintain this system could be an order of magnitude higher than a traditional solar array farm. The point of the video is to check if the *ballpark* figure works out before getting more techniical, it doesn't. SPOILER: At best figure with *no losses* is $1BN payback for a 10 year period. 1/20th the cost of the wall. In practice it will be much worse than this, likely double the payback period or more. And if you want to argue it will pay back the solar install cost then why not install a normal utility scale solar array farm in the Texas desert? Much more efficient and practical. Installing a long array on a wall like this is a technically dumb idea. Forum: https://www.eevblog.com/forum/blog/eevblog-1002-trumps-solar-freakin-wall-busted/ EEVblog Main Web Site: http://www.eevblog.com The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2 Support the EEVblog through Patreon! http://www.patreon.com/eevblog EEVblog Amazon Store (Dave gets a cut): http://astore.amazon.com/eevblogstore-20 T-Shirts: http://teespring.com/stores/eevblog

Dave tries out the new DS1054Z firmware from Rigol that is supposed to fix the 5us delay jitter issue, and the AC Trigger Coupling jitter issues. Have they fixed it, or is there still a problem? What caused the 5us jitter issues to begin with, Dave also investigates the ADC PLL based sample clock with an e-Field probe and the Rigol DSA815 spectrum analyser. Did Rigol also change the PLL coefficients? Previous video: https://www.youtube.com/watch?v=kcOdzFaIYNE Review Summary: http://youtu.be/ETCOhzU1O5A Full features review: http://youtu.be/W2qdtQkBKhc Teardown: http://youtu.be/kb9P1Am9aFU Jitter Problem: http://youtu.be/kcOdzFaIYNE Reverse Engineering: http://youtu.be/lJVrTV_BeGg ADF4360 PLL datasheet: http://www.analog.com/static/imported-files/data_sheets/ADF4360-7.pdf Forum: http://www.eevblog.com/forum/blog/eevblog-699-rigol-ds1054z-oscilloscope-jitter-fix-testing/ EEVblog Main Web Site: http://www.eevblog.com The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2 Support the EEVblog through Patreon! http://www.patreon.com/eevblog EEVblog Amazon Store (Dave gets a cut): http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/