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Analog Discovery 2

Started by Clive Arthur November 9, 2017
Anyone else have one of these?

http://store.digilentinc.com/analog-discovery-2-100msps-usb-oscilloscope-logic-analyzer-and-variable-power-supply/

I bought one a couple of months ago, and seldom use my expensive 'scope 
now.  The limited input gain is made up for by the 14 bit ADC, it does 
oscilloscope, waveform generator, network analyser, spectrum analyser 
and more and the software is pretty intuitive.  Only two (differential) 
channels, but has trigger inputs too.

It takes up very little room and if 100MS/s is fast enough it's an 
excellent tool.  Just a pity it's not in a box - I might fix that if I 
can get a round tuit.

Cheers
-- 
Clive
On 11/09/2017 09:30 AM, Clive Arthur wrote:
> Anyone else have one of these? > > http://store.digilentinc.com/analog-discovery-2-100msps-usb-oscilloscope-logic-analyzer-and-variable-power-supply/ > > > I bought one a couple of months ago, and seldom use my expensive 'scope > now.  The limited input gain is made up for by the 14 bit ADC, it does > oscilloscope, waveform generator, network analyser, spectrum analyser > and more and the software is pretty intuitive.  Only two (differential) > channels, but has trigger inputs too. > > It takes up very little room and if 100MS/s is fast enough it's an > excellent tool.  Just a pity it's not in a box - I might fix that if I > can get a round tuit. > > Cheers
Looks cool for a student or someone where minimal size/portability is the main concern, but at $279 you can get a full-blown DSO with legit 50MHz bandwidth for not much more money. The network analyzer feature is intriguing; I don't think anyone made an inexpensive low-freq one and the boatanchors that go up to hundreds of MHz even used aren't particularly cheap for a contractor or small business
On 11/09/2017 09:30 AM, Clive Arthur wrote:
> Anyone else have one of these? > > http://store.digilentinc.com/analog-discovery-2-100msps-usb-oscilloscope-logic-analyzer-and-variable-power-supply/ > > > I bought one a couple of months ago, and seldom use my expensive 'scope > now.  The limited input gain is made up for by the 14 bit ADC, it does > oscilloscope, waveform generator, network analyser, spectrum analyser > and more and the software is pretty intuitive.  Only two (differential) > channels, but has trigger inputs too. > > It takes up very little room and if 100MS/s is fast enough it's an > excellent tool.  Just a pity it's not in a box - I might fix that if I > can get a round tuit. > > Cheers
Does it have a Linux development kit? I don't think it'll do what I'd want it for, namely a 100-MS/s dynamic signal analyzer, because it's only got one ADC, but if it has simultaneous sampling, it might be quite attractive. Looks nice for a DSP lab course. 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 https://hobbs-eo.com
On 11/09/2017 09:41 AM, bitrex wrote:
> On 11/09/2017 09:30 AM, Clive Arthur wrote: >> Anyone else have one of these? >> >> http://store.digilentinc.com/analog-discovery-2-100msps-usb-oscilloscope-logic-analyzer-and-variable-power-supply/ >> >> >> I bought one a couple of months ago, and seldom use my expensive >> 'scope now.  The limited input gain is made up for by the 14 bit ADC, >> it does oscilloscope, waveform generator, network analyser, spectrum >> analyser and more and the software is pretty intuitive.  Only two >> (differential) channels, but has trigger inputs too. >> >> It takes up very little room and if 100MS/s is fast enough it's an >> excellent tool.  Just a pity it's not in a box - I might fix that if I >> can get a round tuit. >> >> Cheers > > Looks cool for a student or someone where minimal size/portability is > the main concern, but at $279 you can get a full-blown DSO with legit > 50MHz bandwidth for not much more money.
Only 8 bits though. For DSP things the difference between 8 and 14 bits is pretty startling. 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 https://hobbs-eo.com
On 09/11/2017 14:45, Phil Hobbs wrote:
> On 11/09/2017 09:30 AM, Clive Arthur wrote: >> Anyone else have one of these? >> >> http://store.digilentinc.com/analog-discovery-2-100msps-usb-oscilloscope-logic-analyzer-and-variable-power-supply/ >> >> >> I bought one a couple of months ago, and seldom use my expensive 'scope >> now.  The limited input gain is made up for by the 14 bit ADC, it does >> oscilloscope, waveform generator, network analyser, spectrum analyser >> and more and the software is pretty intuitive.  Only two (differential) >> channels, but has trigger inputs too. >> >> It takes up very little room and if 100MS/s is fast enough it's an >> excellent tool.  Just a pity it's not in a box - I might fix that if I >> can get a round tuit. >> >> Cheers > > Does it have a Linux development kit? I don't think it'll do what I'd > want it for, namely a 100-MS/s dynamic signal analyzer, because it's > only got one ADC, but if it has simultaneous sampling, it might be quite > attractive. > > Looks nice for a DSP lab course. > > Cheers > > Phil Hobbs
The ADC is a dual channel AD9648. Cheers -- Clive
On Thursday, November 9, 2017 at 9:30:22 AM UTC-5, Clive Arthur wrote:
> Anyone else have one of these? > > http://store.digilentinc.com/analog-discovery-2-100msps-usb-oscilloscope-logic-analyzer-and-variable-power-supply/ > > I bought one a couple of months ago, and seldom use my expensive 'scope > now. The limited input gain is made up for by the 14 bit ADC, it does > oscilloscope, waveform generator, network analyser, spectrum analyser > and more and the software is pretty intuitive. Only two (differential) > channels, but has trigger inputs too. > > It takes up very little room and if 100MS/s is fast enough it's an > excellent tool. Just a pity it's not in a box - I might fix that if I > can get a round tuit. > > Cheers > -- > Clive
Looks interesting. 'scope inputs are differential, that's nice. and 14 bit! From national instruments and yet I heard not one 'lab view' blurb. (which is a good thing IMHO.) George H.
On 11/09/2017 09:49 AM, Phil Hobbs wrote:
> On 11/09/2017 09:41 AM, bitrex wrote: >> On 11/09/2017 09:30 AM, Clive Arthur wrote: >>> Anyone else have one of these? >>> >>> http://store.digilentinc.com/analog-discovery-2-100msps-usb-oscilloscope-logic-analyzer-and-variable-power-supply/ >>> >>> >>> I bought one a couple of months ago, and seldom use my expensive >>> 'scope now.  The limited input gain is made up for by the 14 bit ADC, >>> it does oscilloscope, waveform generator, network analyser, spectrum >>> analyser and more and the software is pretty intuitive.  Only two >>> (differential) channels, but has trigger inputs too. >>> >>> It takes up very little room and if 100MS/s is fast enough it's an >>> excellent tool.  Just a pity it's not in a box - I might fix that if I >>> can get a round tuit. >>> >>> Cheers >> >> Looks cool for a student or someone where minimal size/portability is >> the main concern, but at $279 you can get a full-blown DSO with legit >> 50MHz bandwidth for not much more money. > > Only 8 bits though. For DSP things the difference between 8 and 14 bits > is pretty startling. > > > Cheers > > Phil Hobbs >
Ya at the 300-ish price point anything is going to be a compromise between whether you prefer bit depth or sample rate. Looks like the Discovery is using a single 14-bit AD9648; by comparison e.g. a Rigol DS1052E in single channel mode interleaves the output of 10 8-bit AD9288s clocked at 100MHz
On 11/09/2017 10:37 AM, bitrex wrote:
> On 11/09/2017 09:49 AM, Phil Hobbs wrote: >> On 11/09/2017 09:41 AM, bitrex wrote: >>> On 11/09/2017 09:30 AM, Clive Arthur wrote: >>>> Anyone else have one of these? >>>> >>>> http://store.digilentinc.com/analog-discovery-2-100msps-usb-oscilloscope-logic-analyzer-and-variable-power-supply/ >>>> >>>> >>>> >>>> I bought one a couple of months ago, and seldom use my expensive >>>> 'scope now.  The limited input gain is made up for by the 14 bit ADC, >>>> it does oscilloscope, waveform generator, network analyser, spectrum >>>> analyser and more and the software is pretty intuitive.  Only two >>>> (differential) channels, but has trigger inputs too. >>>> >>>> It takes up very little room and if 100MS/s is fast enough it's an >>>> excellent tool.  Just a pity it's not in a box - I might fix that if I >>>> can get a round tuit. >>>> >>>> Cheers >>> >>> Looks cool for a student or someone where minimal size/portability is >>> the main concern, but at $279 you can get a full-blown DSO with legit >>> 50MHz bandwidth for not much more money. >> >> Only 8 bits though.  For DSP things the difference between 8 and 14 bits >> is pretty startling. >> >> >> Cheers >> >> Phil Hobbs >> > > Ya at the 300-ish price point anything is going to be a compromise > between whether you prefer bit depth or sample rate. Looks like the > Discovery is using a single 14-bit AD9648; by comparison e.g. a Rigol > DS1052E in single channel mode interleaves the output of 10 8-bit > AD9288s clocked at 100MHz
10 sections, rather as I believe the AD9288 is a dual
On Thu, 9 Nov 2017 14:30:17 +0000, Clive Arthur
<cliveta@nowaytoday.co.uk> wrote:

>Anyone else have one of these? > >http://store.digilentinc.com/analog-discovery-2-100msps-usb-oscilloscope-logic-analyzer-and-variable-power-supply/
Ouch! That's expensive! Others interested in pocket scopes should look at this one. https://www.seeedstudio.com/DSO-Quad-Aluminium-Alloy-Black-p-1034.html I have one and use it extensively. It is 4 channels but channels 3 and 4 are TTL levels only. Still, with a mini plug to BNC adapter (available from Seeed), one can use a X10 or X100 probe to make the channels useful. This scope is especially useful when the waveform to be observed is above ground - typical of off-line products. In the induction heater I'm working on right now, one side is at about 400 volts and the other side of the inductor rings up to 1000 volts. To observe those type signals, I set up the scope, lay it on a dry towel for insulation, then fire up the circuit. I have only two complaints. 1) they adapted the case from what looks like a music/video player so the controls aren't very intuitive. 2) battery life is too short. On the positive side, using a 2+ amp USB charger, it recharges in a very short time. John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN See website for email address
On 11/09/2017 09:53 AM, Clive Arthur wrote:
> On 09/11/2017 14:45, Phil Hobbs wrote: >> On 11/09/2017 09:30 AM, Clive Arthur wrote: >>> Anyone else have one of these? >>> >>> http://store.digilentinc.com/analog-discovery-2-100msps-usb-oscilloscope-logic-analyzer-and-variable-power-supply/ >>> >>> >>> >>> I bought one a couple of months ago, and seldom use my expensive 'scope >>> now.&nbsp; The limited input gain is made up for by the 14 bit ADC, it does >>> oscilloscope, waveform generator, network analyser, spectrum analyser >>> and more and the software is pretty intuitive.&nbsp; Only two (differential) >>> channels, but has trigger inputs too. >>> >>> It takes up very little room and if 100MS/s is fast enough it's an >>> excellent tool.&nbsp; Just a pity it's not in a box - I might fix that if I >>> can get a round tuit. >>> >>> Cheers >> >> Does it have a Linux development kit?&nbsp; I don't think it'll do what I'd >> want it for, namely a 100-MS/s dynamic signal analyzer, because it's >> only got one ADC, but if it has simultaneous sampling, it might be quite >> attractive. >> >> Looks nice for a DSP lab course. >> >> Cheers >> >> Phil Hobbs > > The ADC is a dual channel AD9648.
Well that ought to work then. Cool. Now all I have to do is reproduce the software of my HP 35665A in my spare time. ;) 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 https://hobbs-eo.com