[HH] portable oscilloscope

[Drew Van Zandt]

* Not actually 4 channels.  2 O-scope channels, 2 digital inputs.
* Asylum has one, as well as a pile of the single-channel version.
* Distortion is terrible.  72 MS/s is an egregious enough exaggeration of
something that is technically true that I would be tempted to punch their
marketing guy in the snoot.
* Better than nothing.  Marginally.

*
Drew Van Zandt
Artisan's Asylum Craft Lead, Electronics & Robotics
Cam # US2010035593 (M:Liam Hopkins R: Bastian Rotgeld)
Domain Coordinator, MA-003-D.  Masquerade aVST
*



On Tue, May 1, 2012 at 3:10 PM, Tom Metro <tmetro+hhacking at gmail.com> wrote:

> Have you seen one of these?
>
>
> http://www.seeedstudio.com/depot/dso-quad-aluminium-alloy-black-p-1034.html?cPath=174
>
>  DSO Quad is a pocket size 4 channel digital oscilloscope for common
>  electronic engineering tasks. It's based on ARM cortex M3
>  (STM32F103VCT6) 32 bits platform, providing 72MS/s sampling rate with
>  integrated FPGA and high speed ADC. Internal 2MB USB disk could be
>  used to store waveform, user application and upgrade firmware.
>
>
> Handheld DSOs have been around for a decade or more, but until fairly
> recently they've been over $1000 (see Fluke's Scopemeter family). In
> recent years there have been a few low-end scopes as kits or products in
> the sub-$300 range (Vellman (vellemanusa.com) makes a few), but the
> low-end specs make them useful for not much more than audio frequencies.
>
> There also have been computer add-on products for creating a DSO on the
> cheap. First peripherals for desktop computers, then laptops, and now
> iPhones. They all look pretty clunky to use.
>
> Now it appears the commodities spilling over from volume production of
> smartphones is making self-contained handheld scopes relatively cheap.
> The 2-channel (the 4-channel claim is misleading) 72MS/s DSO with a
> color LCD in a package about the size of a smartphone sells for about
> $200. These seems to be popular with hardware hackers.
>
>  -Tom
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