2014-11-01.log

--- Log opened Sat Nov 01 00:00:37 2014
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ebowdenhttp://www.ncbi.nlm.nih.gov/pubmed/1743748601:55
paperbothttp://libgen.org/scimag/get.php?doi=10.1111%2Fj.1600-0625.2007.00545.x01:55
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kanzuredrazak: maybe ask tallakahath for someone04:11
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kanzurebeep boop10:27
archelsfrack. that Rigol oscilloscope that I wanted to buy is sold out until at least Jan 1st at three major distributors10:43
chris_99darn, which one did you want10:44
archelsthe DS1054Z10:45
archelsthe 74 was in stock, but I'm not paying €180 extra for a software option to unlock 20 extra MHz of bandwidth10:46
chris_99oh 4 channel cool10:46
chris_99i've got the 2 channel, 50MHz one, that can be upgraded to 100MHz via firmware10:46
archelsah yeah, this one too apparently10:47
chris_99nice10:47
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bkeroarchels: pirate that shot10:55
bkeroahit*10:55
bkeroshit**10:55
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nmz787archels: get the Z series11:09
nmz787i have it11:09
nmz787and did the unlock from eevblog11:09
nmz787oh, wait, the 1054z is new?11:10
nmz787ah, ok, the 50MHz option doesn't have an option for a sig-gen11:15
nmz787I guess I have the 1074Z-S11:15
nmz787I was a bit upset that I missed the spec that said the square wave generation bandwidth limit was about half of the analog sine generation11:16
nmz787which makes sense if it's coming from an analog circuit, but why not switch to a GPIO based generator or something digital for square wave generation11:17
tallakahathI've been hilighted11:23
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andytoshikanzure: are you aware of any archives of sheet music?12:14
archelsnmz787: you're saying, get the -S option?12:15
archelsrandom books http://avaxhm.com/ebooks12:17
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nmz787archels: unless you have a another sig-gen that you might use that's better12:26
nmz787archels: it is nice that it is in the same case/enclosure.... but I didn't read up on sig-gens before buying, I just figured I would be pissed someday when I needed a sig-gen while probing some circuit12:27
nmz787so there could be better values out there12:27
archelsmmm yeah12:28
nmz787just watched the eevblog teardown of the 1052Z12:28
archelsI passed up on a pretty good oldschool HP signal gen today at a good price12:28
nmz787pretty neat to watch him rev-engineer the analog front end12:28
archelsa friend recommended to wait for the guy behind HackRF to make the signal generator version thereof12:28
nmz787is he planning that?12:29
archelsprobably half as expensive and infinitely more versatile12:29
archelsyeah, apparently12:29
nmz787you can get the MCU that it uses for $20-$25 as a demo board12:29
nmz787i thought he was working on daisho now12:29
nmz787well actually that dev board has a bit better device, with an 80MSPS ADC12:29
nmz787the LPC-Link 212:30
nmz787which is a usb3 i/o thing12:30
archelsthe thing is, I don't want any of this to turn into a project12:30
nmz787(daisho)12:30
archelsI want something that I can just plug and plug and that just works12:30
archelsplug and play*12:31
nmz787yeah, that's why i just spent the extra $ on the added sig-gen in the rigol12:31
archelsright-o12:31
nmz787also i noticed that when you have the sig-gen on and all 4 channels the controls are a  bit laggy12:31
nmz787so that is another vote for a separate gen12:31
nmz787other than that, the unit has been pretty great for what I want12:32
chris_99i'd go for the bladerf over the hackrf12:32
nmz787i demoed a $20k USD scope from Agilent prior to demoing the Rigol (higher end than Z and also the Z)12:32
nmz787and it was comparable on memory12:33
nmz787chris_99: I had the opposite opinion when I last checked12:33
nmz787they were both at defcon12:33
nmz787i can't remember why i thought that12:33
chris_99the half-duplex puts me off hackrf12:33
nmz787whatcha mean?12:34
nmz787i thought it was only a receiver12:34
nmz787or you mean the fact that it has to buffer signals?12:34
superkuhNope. Transmit 10-6000 MHz too.12:34
nmz787rather than streaming them12:34
* superkuh has one.12:34
nmz787oh12:34
nmz787cool12:35
superkuhI mostly use it as a transmitter and receive with rtlsdr.12:35
superkuhBut soon I'll have an airspy too. :D12:35
chris_99http://www.taylorkillian.com/2013/08/sdr-showdown-hackrf-vs-bladerf-vs-usrp.html12:35
nmz787on another note, this seems OK, haven't tried it yet on the arduino mega files https://github.com/DanChianucci/Eagle2Kicad12:36
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archels10 MHz lower frequency limit though, so not so useful as a benchtop function generator12:36
superkuhInteresting side note, for automated testing of Airspy (Rx) boards at the factory in China prog sent a HackRF with modified firmware.12:36
nmz787chris_99: i guess you just need two hackrf's!12:37
chris_99which would be > than a bladerf12:37
nmz787:/12:38
superkuhRight now the osmosdr source for GNU Radio doesn't seem to support on the fly switching of Rx/Tx either. But I expect that to be fixed.12:38
superkuhEr, for HackRF.12:38
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nmz787chris_99: that data is a bit old, it doesn't compare against hackrf one12:48
chris_99what specifically?12:49
chris_99looks like the hackrf 1 is still 20Msps, but starts @ 10MHz12:50
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nmz787literally just saying it wasn't listed in the comparison12:52
nmz787seems the main advantage is it's completely open, and that it relies more on C than HDL12:53
nmz787but I guess this all depends on what you want things for12:53
chris_99are they both not open?12:58
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nmz787that link you posted seems to say not completely for the non-hackrfs13:18
chris_99i'm not certain about the schematics licence, but the firmware seems open13:19
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andytoshihow come the cryonics institute is so much cheaper than alcor?14:02
andytoshiand so much cheaper than what you'd expect they'd need to be solvent?14:02
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delinquentmethis is so hugely counter-intuitive14:18
delinquentmedata:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wCEAAkGBxQTEhUUExQWFRUXGBcXGBUYFhwXGBUXFxcaFxgYHBwaHCggHB4lHBQXIjEhJSksLi4uFx8zODMsNygtLisBCgoKDg0OGhAQGiwcHCQsLCwsLCwsLCwsLCwsLDAsLCwsLCwsLCwsLCwsLCwsLCwsLCwsLCwsLCwsLCwsLCwsLP/AABEIAHgBOAMBIgACEQEDEQH/xAAcAAACAgMBAQAAAAAAAAAAAAAABAIDAQUHBgj/xABCEAACAQIDAwYKCQMEAwEAAAABAgADEQQhMRJBUQUTYXGBkQciMkJScqGxssEUFSMzYpKT0dJTwvAGY6LhQ3Pxgv/EABgBAQEBAQEAAAAAAAAAAAAAAAABAgQD/8QAHhEBAQEAAgIDAQAAAAAAAAAAAAE14:18
delinquentmeRAjEhQQMSMiL/2gAMAwEAAhEDEQA/AElMmAOEpXKXq040kR2ZMU5nm5NVkxUFSTCSXNyaLKRBaecVXa2s1PVw6Y/aRtneVqQvXTxW7PfKq2Ucqr4p7PfKa9C8tUo5i4XMxxqWUVYWksBaVOJKo9tP865giKilhKXSMPKVMmVFJE6J4FPvcV6lH4qk5806H4Fh9tivUo/FUm/j7hXVoQhOlBCEIBCEIBCEIBCEIBCU4jEqlto66DUseAAzPZKjUqt5KhOl/GP5VPzgNxblBXNMimQGNgGPmgnNumwvlFOU8Owo1WNRywRiM9kAhTuUCcvblOsda1X9Rv3gdcwAcU1FUguBYsNGtltW3X1tuvGJxk8rVlH39UddRte0zqPJlFzRpMKrbRpoTtWcElQSTfPuIgbWEU5+oo8dL9NPPLjsnPsF5fQrK42lIYcRAshCEAhCE14:18
delinquentmeD54UkdPvjCtfQy4oCMxKqmG4Z++cd1dXK1pcLRVKnHTjLEhTCiTtKleWiVMTtALeQLgSxQ3VKsDp4rdnvldQS116YrVuNDK3imuRaJg3k8RibajtlC1Jm3ymeFhUcJW0kakixvDOKKnRKGEsr1QvSeE19SsWNvYPnM6LK2IGgzM6B4DahNbF39Cj1eVVv8AKc6TCel3bp0zwK/e4rd4lH4qk38e/aJXV4QhOpBCEIBCEIBCEIBE6uIZiUpWuMmc5qvR+JujdvhiahZubQ2yBdhqoOgH4jn1a7xEKlQ1iaGHPN0kOzUqqM776dM+l6Tbr21vshjkXlfC1ar0qTl61MWqBlbbTPRtoDZub2G/dN5NVh8HRwxYUafj1SCQurbICgsToBxO8nUmMrhCxvVba4Itwg+bHpPcIFHK+LU0qtNTtuUcbKAublSADs6ds51T/wB14:18
delinquentmeL4s/+AjrZB/dOrU6YUWUADgBYSUDkmI/0zi1Bvh2I/CVb2BrmdB5HpUuZpICUdUS6XKMCFAPi5H2TdSFWireUAesXtAV5Iwb0qexUrNWa7HbYAHM32bDcL2G+2+WV8JcllOw/pDfbTaHnD/LiQ5h0zpm676bH4W1HUbjql2GxAcXFwRkVORU8CP8ALwK6GK8bYcbL2vbcw3lTvtvGouI1KsTQDrY3G8EZFTuIPGV4SuSSj221tewsGB0YDgfYRAZhCEDgRBjFLSRDCWKw4zkw1ipQBkRSI0jAhLi6pBvMbZBsNfdLKiiRpAjXfCrqSARi8XWRqVJroxOq8pZJcomGkaK1KY4RWrQ2cwMt4jrRarU3TKFqigi8SrOdB3xo0jfPQ+wybIJMOmtNHa1MzsADKTrCxlFSoMgd/skqB26J0PwKfe4r1KPxVJz7YnRfAwPtc14:18
delinquentmeV6lH4qk3w/US46pCEJ1IIi/K1IEi73BINqVQi41zC2Menni4u2Y8p9/4jA2P1xS/wBz9Gr/AAmfril/ufo1P4TW7Y4jvhzg4jvgbL64pf7n6NX+EqxPLtNVuA5OijmqguToPIiW2OI75QHDVNRZBrfzn/ZR/wAoGcbyoAi0KLVBUqXL1eZqXRctupYpm1yAuVrkbhHBypRpItOkrcFXmqlgBqx8W5AvmdTfpmo5HYNtVyQDVItc+TSW414:18
delinquentmehttp://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/Articleimage/2009/LC/b904937c/b904937c-f9.gif14:18
delinquentmederp14:18
streetyandytoshi: how are you calculating their costs?14:21
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kanzureback from formula one15:11
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fenndid you win?15:23
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kanzurei won ear damage from row 115:32
kanzurevroom15:32
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delinquentmealso just found thisss: https://weworkremotely.com/17:51
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fennThe downlink receiver uses photon-counting superconducting nanowire arrays that are operated at cryogenic temperatures for high photon detection efficiencies exceeding 1 bit per detected photon.23:17
fenn:O23:17
--- Log closed Sun Nov 02 00:00:38 2014

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