Just the way they have that written seems funny. But its really cheap. https://digilent.com/shop/zmod-scope-1410-2-channel-14-bit-oscilloscope-module/
Is this right? 1125MHz 14-bit dual channel acquisition
Started by ●November 1, 2021
Reply by ●November 1, 20212021-11-01
mandag den 1. november 2021 kl. 22.25.51 UTC+1 skrev Fred Bloggs:> Just the way they have that written seems funny. But its really cheap. > > https://digilent.com/shop/zmod-scope-1410-2-channel-14-bit-oscilloscope-module/cheap?
Reply by ●November 1, 20212021-11-01
On Monday, November 1, 2021 at 5:55:20 PM UTC-4, lang...@fonz.dk wrote:> mandag den 1. november 2021 kl. 22.25.51 UTC+1 skrev Fred Bloggs: > > Just the way they have that written seems funny. But its really cheap. > > > > https://digilent.com/shop/zmod-scope-1410-2-channel-14-bit-oscilloscope-module/ > cheap?Last time I checked a 14-bit acquisition board costs a LOT more than that. I'm starting to suspect that's a Chinese "M" meaning x1000, western "k."
Reply by ●November 1, 20212021-11-01
mandag den 1. november 2021 kl. 23.31.51 UTC+1 skrev Phil Hobbs:> Fred Bloggs wrote: > > On Monday, November 1, 2021 at 5:55:20 PM UTC-4, lang...@fonz.dk wrote: > >> mandag den 1. november 2021 kl. 22.25.51 UTC+1 skrev Fred Bloggs: > >>> Just the way they have that written seems funny. But its really cheap. > >>> > >>> https://digilent.com/shop/zmod-scope-1410-2-channel-14-bit-oscilloscope-module/ > >> cheap? > > > > Last time I checked a 14-bit acquisition board costs a LOT more than that. > > I'm starting to suspect that's a Chinese "M" meaning x1000, western "k." > > > I'm maybe missing something important, but for me the specs page says > > "Sample rate (real time): 40MS/s for 1410-40, 105MS/s for 1410-105, > 125MS/s for 1410-125 > Input impedance: 1MΩ||18pF > Analog bandwidth: > > 1410-40: 20 MHz @ 3dB, 8 MHz @ 0.5dB, 4 MHz @ 0.1dB > 1410-105: 70 MHz @ 3dB, 30MHz @ 0.5dB, 20 MHz @ 0.1 dB > 1410-125: 70 MHz @ 3dB, 30MHz @ 0.5dB, 20 MHz @ 0.1 dB" >and the pictures show an AD9648, a dual 14bit, 125125 MSPS ADC
Reply by ●November 1, 20212021-11-01
mandag den 1. november 2021 kl. 23.23.13 UTC+1 skrev Fred Bloggs:> On Monday, November 1, 2021 at 5:55:20 PM UTC-4, lang...@fonz.dk wrote: > > mandag den 1. november 2021 kl. 22.25.51 UTC+1 skrev Fred Bloggs: > > > Just the way they have that written seems funny. But its really cheap. > > > > > > https://digilent.com/shop/zmod-scope-1410-2-channel-14-bit-oscilloscope-module/ > > cheap? > Last time I checked a 14-bit acquisition board costs a LOT more than that. > I'm starting to suspect that's a Chinese "M" meaning x1000, western "k."it is only the ADC and front end, you need one of these to use it: https://digilent.com/shop/genesys-zu-zynq-ultrascale-mpsoc-development-board/
Reply by ●November 2, 20212021-11-02
On a sunny day (Mon, 1 Nov 2021 14:25:48 -0700 (PDT)) it happened Fred Bloggs <bloggs.fredbloggs.fred@gmail.com> wrote in <99d760d0-d6e3-4873-b4c6-901f408fb898n@googlegroups.com>:>Just the way they have that written seems funny. But its really cheap. > >https://digilent.com/shop/zmod-scope-1410-2-channel-14-bit-oscilloscope-module/Seems expensive for what you get, for double that you can get a real scope with probes etc. I mean 14 bits and 3dB error at 70 MHz, what is the point?
Reply by ●November 2, 20212021-11-02
On Tuesday, November 2, 2021 at 4:32:11 AM UTC-4, Jan Panteltje wrote:> On a sunny day (Mon, 1 Nov 2021 14:25:48 -0700 (PDT)) it happened Fred Bloggs > <bloggs.fred...@gmail.com> wrote in > <99d760d0-d6e3-4873...@googlegroups.com>: > >Just the way they have that written seems funny. But its really cheap. > > > >https://digilent.com/shop/zmod-scope-1410-2-channel-14-bit-oscilloscope-module/ > Seems expensive for what you get, for double that you can get a real scope > with probes etc. > I mean 14 bits and 3dB error at 70 MHz, what is the point?This is a National Instruments company, they know what they're doing. Apparently they see a growing demand for embedded measurement, and these kinds of products facilitate it. Here's a kind of nutty description of what they're trying to do: https://digilent.com/blog/blurring-the-lines-between-fpga-and-test-measurement/
Reply by ●November 2, 20212021-11-02
On a sunny day (Tue, 2 Nov 2021 11:27:16 -0700 (PDT)) it happened Fred Bloggs <bloggs.fredbloggs.fred@gmail.com> wrote in <437b12e5-f7cf-4f7f-9a23-19a5e075bf84n@googlegroups.com>:>On Tuesday, November 2, 2021 at 4:32:11 AM UTC-4, Jan Panteltje wrote: >> On a sunny day (Mon, 1 Nov 2021 14:25:48 -0700 (PDT)) it happened Fred Bloggs >> <bloggs.fred...@gmail.com> wrote in >> <99d760d0-d6e3-4873...@googlegroups.com>: >> >Just the way they have that written seems funny. But its really cheap. >> > >> >https://digilent.com/shop/zmod-scope-1410-2-channel-14-bit-oscilloscope-module/ >> Seems expensive for what you get, for double that you can get a real scope >> with probes etc. >> I mean 14 bits and 3dB error at 70 MHz, what is the point? > >This is a National Instruments company, they know what they're doing. Apparently they see a growing demand for embedded >measurement, and these kinds of products facilitate it. >Here's a kind of nutty description of what they're trying to do: >https://digilent.com/blog/blurring-the-lines-between-fpga-and-test-measurement/Nothing new, I have an old Digilent board with what was it a Xilinx Spartan 2? Used it 15 years ago to brute force things (why I bought it) and do analog TV processing with it. Added an 8 bit FLASH ADC for video.. Card reader stuff (for the hack). Also had a simple frequency counter: http://panteltje.com/panteltje/fpga/frequency_counter-0.2.1.lsm same add-on board: http://panteltje.com/pub/FPGA_board_with_25MHz_VCXO_locked_to_rubidium_10MHz_reference_IMG_3724.GIF I think the black thing is the card reader... Pay TV hacking. Of course I stopped hacking when it became illegal, or rather some politician woman in the EU started screaming 'mouse' and called Tom the cat (but Jerry always wins) like in that Tom and Jerry comic strip... So now 14 bit, am sure even that was no problem back then. In 78 I build a video digitizer with normal logic... Digilent was expensive even then BTW. Let's Go Brandon!
Reply by ●November 3, 20212021-11-03
Jan Panteltje wrote:> On a sunny day (Mon, 1 Nov 2021 14:25:48 -0700 (PDT)) it happened Fred Bloggs > <bloggs.fredbloggs.fred@gmail.com> wrote in > <99d760d0-d6e3-4873-b4c6-901f408fb898n@googlegroups.com>: > >> Just the way they have that written seems funny. But its really cheap. >> >> https://digilent.com/shop/zmod-scope-1410-2-channel-14-bit-oscilloscope-module/ > > Seems expensive for what you get, for double that you can get a real scope > with probes etc. > I mean 14 bits and 3dB error at 70 MHz, what is the point? >All sorts of instruments can profit from that sort of performance. 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 ●November 3, 20212021-11-03
On a sunny day (Wed, 3 Nov 2021 12:59:47 -0400) it happened Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote in <9fa3d49f-9f2a-3cfd-c0e3-a904e5af284d@electrooptical.net>:>Jan Panteltje wrote: >> On a sunny day (Mon, 1 Nov 2021 14:25:48 -0700 (PDT)) it happened Fred Bloggs >> <bloggs.fredbloggs.fred@gmail.com> wrote in >> <99d760d0-d6e3-4873-b4c6-901f408fb898n@googlegroups.com>: >> >>> Just the way they have that written seems funny. But its really cheap. >>> >>> https://digilent.com/shop/zmod-scope-1410-2-channel-14-bit-oscilloscope-module/ >> >> Seems expensive for what you get, for double that you can get a real scope >> with probes etc. >> I mean 14 bits and 3dB error at 70 MHz, what is the point? >> > >All sorts of instruments can profit from that sort of performance. > >Cheers > >Phil HobbsWhen you start thinking in decibels 3 dB is down to about 70% 2^14 = 16384 70 % of 16384 = 11468.8 difference is 16384 - 11468.8 = 4915.2 That is close to 2^12 = 4096 So the thing screws up 12 bits or is basically worth 2 bits at that frequency for signals that fast. In other words 11111111111111 11X? ^ | 4096 Then you can better get a 100 MHz 8 bit flash ADC for peanuts. For DC that 14 bit thing should work.. Although there are plenty of good 16 bit audio ADCs I think for a fraction of that money. So yes, probably some application exists for it but I aint buying for that money. My math is strange I but neural net beep
