Products > Test Equipment

Using an oscilloscope for data acquisition

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Fungus:

--- Quote from: nctnico on April 13, 2023, 10:33:54 am ---Scpi also supports binary data and with a fast enough network the sky is the limit. However, an oscilloscope is usually not setup to do continous streaming.

--- End quote ---

It's not about how fast the network is, it's about how fast the 'scope will send the data.

We both know that 'scopes aren't made for doing this.

If all you want is data capture to a PC then there's special data capture devices for the job.

jasonRF:

--- Quote from: jonpaul on April 13, 2023, 01:20:14 pm ---Bonjour,  we did data acquisition and Spectrum analysis since 1968.

For audio BW use any sound card, record on any sound track editor, many are free. Most are 16..20 bit and capabilities 20 .Hz.20 kHz.  FS to 192 kHz.

We use Oscilloscope, speech  and spectrum analysis SW on W10 laptop.

For DC or wider BW, many PCI cards for PC BUS PC and USB ADC, scopes, many much cheaper than the crazy high cost Picos.

Jon

--- End quote ---
The OP needs at least 8 bits at 20 MS/s.  Do you have any specific products that you could recommend for that sample rate?   The least expensive picoscope that can do that seems to be the 2206b, which runs $419 US.  It seems like there should be something available that is cheaper…

jason

bifferos:

--- Quote from: jasonRF on April 13, 2023, 03:55:24 pm ---The OP needs at least 8 bits at 20 MS/s.  Do you have any specific products that you could recommend for that sample rate?   The least expensive picoscope that can do that seems to be the 2206b, which runs $419 US.  It seems like there should be something available that is cheaper…

--- End quote ---

I really don't want a picoscope... for whatever price.  I'm in the market for a new scope, could do with a 4-channel one, and don't really want to purchase hardware for a specific use that could just be left in a drawer unused.  I don't really like PC scopes in general and prefer to have a bench-top one.  The industrial ADC cards are really over-priced for what you get, and again, it's just going to sit in a drawer when I'm not using it whereas a new bench top scope will be something I'll be using all the time.  If I wanted something custom I'd probably go the AD9226 route they have cheap boards on ali-express, but it's still a project to get the data into the PC, and that's not really the project I wanted!

2N3055:

--- Quote from: bifferos on April 13, 2023, 04:37:42 pm ---
--- Quote from: jasonRF on April 13, 2023, 03:55:24 pm ---The OP needs at least 8 bits at 20 MS/s.  Do you have any specific products that you could recommend for that sample rate?   The least expensive picoscope that can do that seems to be the 2206b, which runs $419 US.  It seems like there should be something available that is cheaper…

--- End quote ---

I really don't want a picoscope... for whatever price.  I'm in the market for a new scope, could do with a 4-channel one, and don't really want to purchase hardware for a specific use that could just be left in a drawer unused.  I don't really like PC scopes in general and prefer to have a bench-top one.  The industrial ADC cards are really over-priced for what you get, and again, it's just going to sit in a drawer when I'm not using it whereas a new bench top scope will be something I'll be using all the time.  If I wanted something custom I'd probably go the AD9226 route they have cheap boards on ali-express, but it's still a project to get the data into the PC, and that's not really the project I wanted!

--- End quote ---

You asked the question. Picoscope is cheapest solution that works inside your parameters.

Standalone scopes cannot do that. I don't know if there is even one standalone scope that can stream data, at any speed.. only triggered blocks..

So what you want is not doable the way you are trying to force the solution.  I agree standalone scope is more general solution. It will be good for everything else, except streaming...

Someone:

--- Quote from: 2N3055 on April 13, 2023, 06:37:38 pm ---
--- Quote from: bifferos on April 13, 2023, 04:37:42 pm ---
--- Quote from: jasonRF on April 13, 2023, 03:55:24 pm ---The OP needs at least 8 bits at 20 MS/s.  Do you have any specific products that you could recommend for that sample rate?   The least expensive picoscope that can do that seems to be the 2206b, which runs $419 US.  It seems like there should be something available that is cheaper…

--- End quote ---

I really don't want a picoscope... for whatever price.  I'm in the market for a new scope, could do with a 4-channel one, and don't really want to purchase hardware for a specific use that could just be left in a drawer unused.  I don't really like PC scopes in general and prefer to have a bench-top one.  The industrial ADC cards are really over-priced for what you get, and again, it's just going to sit in a drawer when I'm not using it whereas a new bench top scope will be something I'll be using all the time.  If I wanted something custom I'd probably go the AD9226 route they have cheap boards on ali-express, but it's still a project to get the data into the PC, and that's not really the project I wanted!

--- End quote ---

You asked the question. Picoscope is cheapest solution that works inside your parameters.

Standalone scopes cannot do that. I don't know if there is even one standalone scope that can stream data, at any speed.. only triggered blocks..

So what you want is not doable the way you are trying to force the solution.  I agree standalone scope is more general solution. It will be good for everything else, except streaming...

--- End quote ---
This was over with the first reply, the OP is trying to find something which doesn't exist. Which from one point of view is understandable as the hardware of many scopes could do this task (at some lower sample rate) but the manufacturers don't see the point in adding that feature as its such a niche use and has high support costs.

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