Initial impressions of DSO-2250

My USB-based, 2-channel, digital storage oscope arrived yesterday and I thought I’d post a few photos and screenshots for those who may be interested.

I bought the oscope for $200 from eBay seller “ddtaktak1995” who has a 99.5% rating. A few hours later I received an email (seperate from the normal eBay channels) from Yan Leung stating that he’d received my payment and that I would soon receive a tracking number.

Tracking shows that the item arrived in New York 7 days later and here to my QTH (Texas) 5 days after that.

Well packed, the oscope’s box was surrounded by bubble wrap, then the parcel paper with a lot of Chinese stamps that I’ll have to give to a collector I know.

Inside the box was a brief manual in good English, the oscope, two switchable 1X/10X probes with spare ground clips and alternate probe tips,

Click for larger

USB cable and the software.

The software loaded onto my Windows 7 PC without a problem, Windows found the device and loaded the drivers. Total time for all that – about a minute.

The oscope contains a calibration output of 2V pk-pk at 1 kHz and the software’s presentation of that signal is recorded in the screenshots below.

There is a means of calibrating the probes and the scope itself (via the software) if it’s ever necessary. The manual states that everything was calibrated at the factory but that the owner may wish to re-calibrate in 6 months.

The software seems very complete with numerous options in how info is displayed and I’ve included a few of many possible screenshots below.

I wrung the test signal for all it was worth, using “Auto set-up”, manual adjustments, cursors, auto measurement of amplitude and freq, full screen display, record mode, etc. Everything worked well, giving me the data I was expecting to get with no lock-ups or glitches of any kind.

As mentioned previously, I’ll test the oscope throughout its range next week and we’ll see how it does into the RF range.

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  2 comments for “Initial impressions of DSO-2250

  1. June 8, 2012 at 11:10 am

    Lookin’ good, lookin’ good. I must admit that I do hanker for a smoother trace, but if everything else checks out, it’s a reasonable price to pay for what could be a very useful piece of gear for the QRP home-brewer.

    I’m staying tuned.

    • June 8, 2012 at 11:33 am

      A different sampling rate may smooth things out. I’ll keep tinkering…

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