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-   -   digital oscilloscope group buy (http://www.diyaudio.com/forums/group-buys/234420-digital-oscilloscope-group-buy.html)

cyclecamper 18th April 2013 11:17 PM

digital oscilloscope group buy
 
Just guaging interest in trying to get a group buy going. I have no connections or discounts. I'm just interested and wondering whether anyone else also is? I'm thinking a digital 'scope with good isolation like the Tektronix, a nice interface to a better PC monitor, probes appropriate for tube and transistor audio work. Some kind of knobs instead of UP/DOWN buttons. Maybe a foreign off-brand in the 3xx.xx USD range? Or is that just wishful thinking?

prairieboy 18th April 2013 11:40 PM

Don't know if this meets your criteria? Syscomp Electronic Design Ltd.

soundchaser001 19th April 2013 01:09 AM

That looks great. Some people might not like the need for a PC but I'd be good with it. I love the idea of a network analyzer function.

Too bad I just got an Agilent DSOX-2002. I like it but could have spent less I suppose.

Matt

qusp 19th April 2013 01:57 AM

Quote:

Originally Posted by prairieboy (Post 3459997)
Don't know if this meets your criteria? Syscomp Electronic Design Ltd.

nope, only 2MHz, no isolation, USB power, no usefully low noise analogue inputs, no use for tubes, limited voltage even for solid state. its really more for digital by the looks and its too slow for that.

cyclecamper 19th April 2013 04:51 PM

I'd prefer at least a few knobs for scaling voltage and time; so much quicker to operate than any keys or buttons. The open source software could be nice; I could completely automate some things. But it's in some weird language...

balerit 19th April 2013 05:53 PM

Quote:

Originally Posted by prairieboy (Post 3459997)
Don't know if this meets your criteria? Syscomp Electronic Design Ltd.

I'm thinking of buying one, especially for testing loudspeakers.

dirkwright 19th April 2013 06:18 PM

Quote:

Originally Posted by prairieboy (Post 3459997)
Don't know if this meets your criteria? Syscomp Electronic Design Ltd.

It's fine for it's intended use, which is general troubleshooting, education and field tech service. I don't understand the complaints about it. 2MHz is good enough bandwidth for audio circuits, for example.

balerit 20th April 2013 10:46 AM

Quote:

Originally Posted by balerit (Post 3460873)
I'm thinking of buying one, especially for testing loudspeakers.

Has anyone purchased one of them?

Jaimo 20th April 2013 11:36 AM

A stand alone scope is my preference- especially since the prices have come down to affordable levels. You may want to consider a Rigol DS1052E for around US325.

qusp 20th April 2013 12:25 PM

Quote:

Originally Posted by dirkwright (Post 3460899)
It's fine for it's intended use, which is general troubleshooting, education and field tech service. I don't understand the complaints about it. 2MHz is good enough bandwidth for audio circuits, for example.

you dont understand a preamp stage powered by USB, so noise will be a limiting factor and likely will have quite a bit of bleed from the PC its used with? for a higher budget i'm sure it could be made to work, but i'm pretty sure this wont be great. a voltage pretty much limited to testing line level?. that it has a bandwidth of 2MHz does not mean it can be sufficient to show much about 2MHz signals. It will tell very little about common mode noise bandwidth (pretty important in todays world and considerably higher speed) wont say much about a reasonably fast feedback loop or opamp instability, wont touch clock speeds. etc etc.

educational and basic troubleshooting only for limited circuits, I dont think its suitable for a real diagnostic tool.

it could however be used in conjunction with an older fast analogue scope. unless you really need the USB and data logging there are better options for the money on the used market


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