EMRFD Message Archive 1863

Message Date From Subject
1863 2008-08-06 07:35:21 Steve Ratzlaff Re: scope (DSO 2250)
Where did you find it for that low a price?
----- Original Message -----
1884 2008-08-06 17:52:39 Steve Ratzlaff Re: scope (DSO 2250)
Chuck Adams bought a DSO 2250 at the $257 price too and is beginning a DSO tutorial at http://www.k7qo.net/ using that scope. He mentions the price may shoot up once folks discover this USB scope.
----- Original Message -----
1885 2008-08-06 17:52:39 Steve Ratzlaff Re: scope (DSO 2250)
That's the place--tatoo equipment, pedicure stuff, etc. You have to check "test equipment". Then look for the DSO 2250. But it still gives no price for it, just "0.00". I tried registering and buying the DSO 2250. Checkout resulted in a shipping weight of 35kg and a total price of $392. Obviously things are screwed up
1891 2008-08-07 12:26:07 Greg Back Re: scope (DSO 2250)
My first post here, but have been lurking for a while and learning a lot.

I had also tried to order via the taomore.com site but found the same thing as some others here, $0.00 pricing and weird shipping charges. I then found the ioffer.com auction site where taomore had these USB scopes listed. He has buyitnow pricing as well as make offer. I got the DSO-2150 version for $200 shipped and had it in hand in 4 days. I ordered on Sat 8/2 and received it on Wed 8/6. I'm having a ball playing with it. It is a little differnt than the analog scopes I'm used to, but I like it better and better the more I play with it.

Greg - WA6LGS

[Non-text portions of this message have been removed]
1892 2008-08-07 12:58:33 wb7dmx Re: scope (DSO 2250)
1893 2008-08-07 13:32:45 Nick Kennedy Re: scope (DSO 2250)
This digital scopes / spectrum analyzers sound pretty nice.

The one comment, question, or whatever that I'd have is regarding the
speed. At first glance, one might take the 100 MS/s speed and equate that
to a 100 MHz scope, more or less. But I guess actually it would be closer
to a 10 MHz scope, right? (Just my wild guess that 10 samples per cycle
would give decent resolution.)

73--Nick, WA5BDU

[Non-text portions of this message have been removed]
1895 2008-08-07 14:16:34 wb7dmx Re: scope (DSO 2250)
1896 2008-08-07 15:11:28 wb7dmx Re: scope (DSO 2250)
1897 2008-08-07 15:56:08 Mike Re: scope (DSO 2250)
If you have one of these, are in inputs at a common ground potential?
I need to measure two signals and the "grounds" can't be tied together.

WRT pricing...got this in an e-mail from them...

hi Mike,

thanks for your inquiry, the price for 2090 is 135usd , 165usd for
2150, 255usd for 2250,the shipping for each one will be 27usd, if you
order more than one unit, then 12usd for each one more , thanks

Best Regards

Sales: Product Inquiry

How much are the digital oscilloscopes (US dollars)?

Mike - N8OEP
1898 2008-08-07 16:06:46 Greg Back Re: scope (DSO 2250)
The 100Mb/s equates to about 40MHz in analog terms, 150Mb/s about
60MHz and 250Mb/s is about 100MHz. I believe the bandwidth is shared
across both channels so is reduced by half for 2 channel use. Can
someone more knowledgeable please clarify? Thanks.


1899 2008-08-07 16:07:37 bob bailey Re: scope (DSO 2250)
yes, all ground points are all earth ground , the same as the case on your computer. I don't know of any way you can do this without using some type of isolating methods.
I belive that ground is ground no mater how you look at it.
the only exception would be a power supply that has a + and a - voltage that is not grounded to the earth ground.

1900 2008-08-07 16:12:45 bob bailey Re: scope (DSO 2250)
that is referring to the sample rate, not the bandwidth, with two probes used, the sample rate drops to 125, where as with one probe, its 250.

1901 2008-08-07 16:31:32 Greg Back Re: scope (DSO 2250)
Ok, that make more sense. Thanks.