Re: Recommended USB oscilloscopes?

Jamie wrote:

Joerg wrote:

Jamie wrote:

Joerg wrote:

Jamie wrote:

mrdarrett@xxxxxxxxx wrote:

Yes I've done the google thing, but I was wondering what USB scopes
you use / recommend / absolutely hate.

Thanks

Michael

DO your self a favor, Buy a real one and use the USB connector
to monitor and log data to a PC>

You can get good USB PC scopes how ever, the price you'll pay
won't be worth the inconvenience of having a digital stand alone
that you won't need the PC for.


And also stay away from standalone DSOs that use a Windows type OS. I had the "pleasure" to use one at a client and it drove me nuts. Those can be sloooow. I might carry my Instek down there next time. That's why I didn't buy my dream scope, the Hameg 2008, because nothing much besides it would fit into a pilot's case and you don't want to check in a scope.

I bought a chinese knock off that looks a lot like a Tek, It's only 25 Mhz but that is sufficient for portable toss around stuff. It has a 320 x256 color screen and a DMM in it, all isolated inputs with high quality
scope probes, metal carry case etc. $499. the interface for the PC has
both USB or Serial and the software works excellent for the price of it.


Rigol or Instek? I just bought Instek's top of the line, a GDS-2204. Very nice. The screen resolution ain't that great either but its TFT is so bright you can read it clear across the lab. The only bone I still have to pick with them is that they took the delayed trigger out despite advertising that it has it. The weirdest thing: The cheaper 2-ch model has it! And via some hyperterminal poking I found the firmware fragments of it still floating around in there. So I wonder whether it's just throttled down for whatever reason.

Hmm, no it's not a Rogol or Instek, and are you sure you didn't miss something?
On mine, if memory serves, You use lets say channel B as the trigger
source. You move the cursor to the place you want. and on A channel you
can then expand it. That is one example. there are others .
http://www.saelig.com/miva/merchant.mvc?Screen=PROD&Product_Code=PSSA001&Category_Code=


Delay really doesn't work, I tried. All you can do is use the memory as delay. Ok, 25K is already ten times more than the paltry 2.5K on the TDS2xxx series but still, when sampling at full blast of 1GS/sec that ends at 25usec, not enough for many pulse-echo measurements. Using two channels you only net 12.5usec and for three or all four channels it's half that again.


Hmm, after looking at it there, I guess it's a 20mhz, and for some reason this one only has a USB, the one have has both. Oh well.
Maybe it's been down graded it a bit.


Mine's got several USB ports and RS232 which is nice when connecting to legacy lab PCs. Really practical is the USB up front, avoids having to climb onto the lab desk to plug in a memory stick.

I guess some day we'll see the first ones with a WLAN antenna. That would be cool.

--
Regards, Joerg

http://www.analogconsultants.com
.

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