On Friday, December 17, 2021 at 6:00:08 PM UTC-4, whit3rd wrote:> On Friday, December 17, 2021 at 1:15:36 PM UTC-8, John Larkin wrote: > > I was looking for something else and... > [ FNIRSI touchscreen o-scope ] > > Amazing. Someone could set up a garage lab and do some serious stuff > > really cheap these days. > There's two versions; that (#1013) has a touch-screen and the 1014 has knobs. > I'm uncertain I'd want to depend on the touch-screen version, but it certainly IS a nice compact form factor.Better as an attached scope with a laptop as the front panel. Then you could actually see the screen without a magnifier. It would also save costs on the touch screen. I expect it would cost more for development of the PC software. All they do now is allow file access to screen captures, no data dumps. I bought a Hantek attached unit once. A total piece of crap and the PC software wouldn't even run. Some fans hacked it and wrote software for it, but it's still a very low end unit, maybe 10 MHz, I forget. I got a refund without returning it because the delivery paper trail was messed up. Not that I care, the thing has just been sitting. Lots of crap out there. I don't know if this device is any better. Often the triggering on these units is crap which is a very important feature. -- Rick C. - Get 1,000 miles of free Supercharging - Tesla referral code - https://ts.la/richard11209
$161 oscilloscope
Started by ●December 17, 2021
Reply by ●December 18, 20212021-12-18
Reply by ●December 18, 20212021-12-18
On Friday, December 17, 2021 at 10:10:34 PM UTC-4, Rich S wrote:> > >> Amazing. Someone could set up a garage lab and do some serious stuff > > >> really cheap these days. > > >> > > >** How about a VHF/ UHF SA for A$220 ? > > > > > >https://www.ebay.com.au/itm/174645368295?hash=item28a9acd5e7:g:vKgAAOSw7WJgUjkv > > > > > >Thousands of uses...... > > >..... Phil > > Microwave frequency synthesizers can be had for literally 1/1000 of > > what they cost 20 or 30 years ago. > > If a man will begin with certainties, he shall end with doubts, > > but if he will be content to begin with doubts he shall end in certainties. > > Francis Bacon > what is everyone's opinion about "USB scopes" and "USB SA", etc. > where the computer does all human interface & control, and > a little black box handles the in's & out's. > I think I like it since the laptop has UXGA resolution or better, way > beyond what these stand-alone pieces have.That's what I'd like. The only one I've found that was worth having is PicoScope. There MSO is around $1,500 though. Not such a bargain, but at least they work. -- Rick C. + Get 1,000 miles of free Supercharging + Tesla referral code - https://ts.la/richard11209
Reply by ●December 18, 20212021-12-18
On a sunny day (Fri, 17 Dec 2021 18:10:31 -0800 (PST)) it happened Rich S <richsulinengineer@gmail.com> wrote in <eee32e67-f710-4a69-8330-400fe6cb4ab4n@googlegroups.com>:>> >> Amazing. Someone could set up a garage lab and do some serious stuff >> >> really cheap these days. >> >> >> >** How about a VHF/ UHF SA for A$220 ? >> > >> >https://www.ebay.com.au/itm/174645368295?hash=item28a9acd5e7:g:vKgAAOSw7WJgUjkv >> > >> >Thousands of uses...... >> >..... Phil >> Microwave frequency synthesizers can be had for literally 1/1000 of >> what they cost 20 or 30 years ago. >> If a man will begin with certainties, he shall end with doubts, >> but if he will be content to begin with doubts he shall end in certainties. >> Francis Bacon > >what is everyone's opinion about "USB scopes" and "USB SA", etc. >where the computer does all human interface & control, and >a little black box handles the in's & out's. >I think I like it since the laptop has UXGA resolution or better, way >beyond what these stand-alone pieces have.I have several RTL_SDR USb sticks, accuray 1 ppm, range about 30 MHz to 1.8 GHz cost abut 30$ https://www.ebay.com/itm/272411458376 There is plenty of software for it online, but wrote my own stuff: http://panteltje.com/pub/xpsa_audio_sinc_filter_3.gif\old version from 2017, more option have been added... These new sticks have a software mod somewhere to go below 30 MHz, but have not needed / used it. But these things are super cool, I plug it into the laptop and type xpsa http://panteltje.com/pub/xpsa-0.7.gif 7.5 cm antenna.. But again there is a lot of open source software online, some with more features, for these sticks I just write what I need for fun.
Reply by ●December 18, 20212021-12-18
Rich S wrote:> On Friday, December 17, 2021 at 10:54:41 PM UTC, John Larkin wrote: >> On Fri, 17 Dec 2021 16:32:48 -0500, Phil Hobbs >> <pcdhSpamM...@electrooptical.net> wrote: >> >>> John Larkin wrote: >>>> I was looking for something else and this showed up: >>>> >>>> https://www.amazon.com/s?k=0751300436685&crid=21WX22FGW2XXG&sprefix=0751300436685%2Caps%2C262&ref=nb_sb_noss >>>> >>>> Amazing. Someone could set up a garage lab and do some serious stuff >>>> really cheap these days. >>>> >>>> >>>> >>>> >>> Potentially pretty useful, especially in a tool bag. >>> >>> Cheers >>> >>> Phil Hobbs >> I could keep one at home. Or in my car. >> -- >> >> If a man will begin with certainties, he shall end with doubts, >> but if he will be content to begin with doubts he shall end in certainties. >> Francis Bacon > > "Debugging Weapon" > finally, Amazon is selling weapons. > Kill those lousy oscillations. >Not with a 100 MHz scope! I did see one at 38 MHz a couple of months ago, but it's more usually 300 MHz or above. (My current record is 14 GHz iirc.) It's pretty cool to be able to get magic 60 GHz transistors for 20 cents. I remember designing 70-MHz crystal oscillators with 2N5179s back in the day, because 2N3904s were slightly too slow. (Yikes, that was 40 years ago!) Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
Reply by ●December 18, 20212021-12-18
On Sat, 18 Dec 2021 08:27:49 -0500, Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:>Rich S wrote: >> On Friday, December 17, 2021 at 10:54:41 PM UTC, John Larkin wrote: >>> On Fri, 17 Dec 2021 16:32:48 -0500, Phil Hobbs >>> <pcdhSpamM...@electrooptical.net> wrote: >>> >>>> John Larkin wrote: >>>>> I was looking for something else and this showed up: >>>>> >>>>> https://www.amazon.com/s?k=0751300436685&crid=21WX22FGW2XXG&sprefix=0751300436685%2Caps%2C262&ref=nb_sb_noss >>>>> >>>>> Amazing. Someone could set up a garage lab and do some serious stuff >>>>> really cheap these days. >>>>> >>>>> >>>>> >>>>> >>>> Potentially pretty useful, especially in a tool bag. >>>> >>>> Cheers >>>> >>>> Phil Hobbs >>> I could keep one at home. Or in my car. >>> -- >>> >>> If a man will begin with certainties, he shall end with doubts, >>> but if he will be content to begin with doubts he shall end in certainties. >>> Francis Bacon >> >> "Debugging Weapon" >> finally, Amazon is selling weapons. >> Kill those lousy oscillations. >> > >Not with a 100 MHz scope! I did see one at 38 MHz a couple of months >ago, but it's more usually 300 MHz or above. (My current record is 14 >GHz iirc.) It's pretty cool to be able to get magic 60 GHz transistors >for 20 cents. > >I remember designing 70-MHz crystal oscillators with 2N5179s back in the >day, because 2N3904s were slightly too slow. (Yikes, that was 40 years >ago!) > >Cheers > >Phil HobbsIn my mis-spent youth I designed an RC emitter follower + 7414 schmitt gate as a system power-on reset. The 2N2219 oscillated so hard at 100 MHz it never got the gate input high. Transistors are so much better now! -- I yam what I yam - Popeye
Reply by ●December 18, 20212021-12-18
John Larkin wrote:> On Fri, 17 Dec 2021 16:33:30 -0800 (PST), Phil Allison > <pallison49@gmail.com> wrote: > >> On Saturday, December 18, 2021 at 8:15:36 AM UTC+11, John Larkin wrote: >>> I was looking for something else and this showed up: >>> >>> https://www.amazon.com/s?k=0751300436685&crid=21WX22FGW2XXG&sprefix=0751300436685%2Caps%2C262&ref=nb_sb_noss >>> >>> Amazing. Someone could set up a garage lab and do some serious stuff >>> really cheap these days. >>> >> >> ** How about a VHF/ UHF SA for A$220 ? >> >> https://www.ebay.com.au/itm/174645368295?hash=item28a9acd5e7:g:vKgAAOSw7WJgUjkv >> >> Thousands of uses...... >> >> >> ..... Phil > > Microwave frequency synthesizers can be had for literally 1/1000 of > what they cost 20 or 30 years ago. >And with 1000x the close-in phase noise. :( Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
Reply by ●December 18, 20212021-12-18
17.12.21 22:15, John Larkin wrote:>I was looking for something else and this showed up: > >https://www.amazon.com/s?k=0751300436685&crid=21WX22FGW2XXG&sprefix=0751300436685%2Caps%2C262&ref=nb_sb_noss > >Amazing. Someone could set up a garage lab and do some serious stuff >really cheap these days. > > > >Looks very nice You can buy a Picoscope 2000 for 125USD but then only 10MHz BW. You get protocol analysis for free along with potent FFT Of course you then need to bring a laptop... -- Klaus
Reply by ●December 18, 20212021-12-18
Rich S wrote:>>>> Amazing. Someone could set up a garage lab and do some serious stuff >>>> really cheap these days. >>>> >>> ** How about a VHF/ UHF SA for A$220 ? >>> >>> https://www.ebay.com.au/itm/174645368295?hash=item28a9acd5e7:g:vKgAAOSw7WJgUjkv >>> >>> Thousands of uses...... >>> ..... Phil >> Microwave frequency synthesizers can be had for literally 1/1000 of >> what they cost 20 or 30 years ago. >> If a man will begin with certainties, he shall end with doubts, >> but if he will be content to begin with doubts he shall end in certainties. >> Francis Bacon > > what is everyone's opinion about "USB scopes" and "USB SA", etc. > where the computer does all human interface & control, and > a little black box handles the in's & out's. > I think I like it since the laptop has UXGA resolution or better, way > beyond what these stand-alone pieces have. >I'd way rather have a stack of boat anchors for the same money. My lab has nearly $2M worth of top-of-the-line test gear (at list prices) that I've paid probably $50k for over the years. SDR-style spectrum analyzers are okay for spur chasing, but mostly useless for the kind of RF stuff I do, which requires low phase noise. USB things are great for portable use, of course, but AFAICT they tend to be limited by their software. The Ocean Optics spectrometers are the same way--the software is infinitely flexible if you want to spend a week setting it up, but it's a huge pain if you just want to turn it on and measure a spectrum. Machines should do as they're damn well told. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
Reply by ●December 18, 20212021-12-18
On Sat, 18 Dec 2021 11:51:12 -0500, Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:>Rich S wrote: >>>>> Amazing. Someone could set up a garage lab and do some serious stuff >>>>> really cheap these days. >>>>> >>>> ** How about a VHF/ UHF SA for A$220 ? >>>> >>>> https://www.ebay.com.au/itm/174645368295?hash=item28a9acd5e7:g:vKgAAOSw7WJgUjkv >>>> >>>> Thousands of uses...... >>>> ..... Phil >>> Microwave frequency synthesizers can be had for literally 1/1000 of >>> what they cost 20 or 30 years ago. >>> If a man will begin with certainties, he shall end with doubts, >>> but if he will be content to begin with doubts he shall end in certainties. >>> Francis Bacon >> >> what is everyone's opinion about "USB scopes" and "USB SA", etc. >> where the computer does all human interface & control, and >> a little black box handles the in's & out's. >> I think I like it since the laptop has UXGA resolution or better, way >> beyond what these stand-alone pieces have. >> > >I'd way rather have a stack of boat anchors for the same money. My lab >has nearly $2M worth of top-of-the-line test gear (at list prices) that >I've paid probably $50k for over the years. > >SDR-style spectrum analyzers are okay for spur chasing, but mostly >useless for the kind of RF stuff I do, which requires low phase noise. > >USB things are great for portable use, of course, but AFAICT they tend >to be limited by their software. > >The Ocean Optics spectrometers are the same way--the software is >infinitely flexible if you want to spend a week setting it up, but it's >a huge pain if you just want to turn it on and measure a spectrum. > >Machines should do as they're damn well told. > >Cheers > >Phil HobbsLike kitchen ranges and front doors. They should have knobs and not quit working when you can't find your phone or when AWS crashes. My neighbor has a fake LED fireplace with a remote. He's very proud of it. -- I yam what I yam - Popeye
Reply by ●December 18, 20212021-12-18
On Sat, 18 Dec 2021 11:44:22 -0500, Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:>John Larkin wrote: >> On Fri, 17 Dec 2021 16:33:30 -0800 (PST), Phil Allison >> <pallison49@gmail.com> wrote: >> >>> On Saturday, December 18, 2021 at 8:15:36 AM UTC+11, John Larkin wrote: >>>> I was looking for something else and this showed up: >>>> >>>> https://www.amazon.com/s?k=0751300436685&crid=21WX22FGW2XXG&sprefix=0751300436685%2Caps%2C262&ref=nb_sb_noss >>>> >>>> Amazing. Someone could set up a garage lab and do some serious stuff >>>> really cheap these days. >>>> >>> >>> ** How about a VHF/ UHF SA for A$220 ? >>> >>> https://www.ebay.com.au/itm/174645368295?hash=item28a9acd5e7:g:vKgAAOSw7WJgUjkv >>> >>> Thousands of uses...... >>> >>> >>> ..... Phil >> >> Microwave frequency synthesizers can be had for literally 1/1000 of >> what they cost 20 or 30 years ago. >> > >And with 1000x the close-in phase noise. :( > >Cheers > >Phil HobbsThat's from the cheap XO. The $7 synth chips are really good... picosecond jitter in my domain. -- I yam what I yam - Popeye
