DSO Quad - 4 Channel Digital Storage Oscilloscope Review
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.
Price : $224.99
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DSO Quad - 4 Channel Digital Storage Oscilloscope Feature
- Pocket size and light weight
- Two 72MS/s analog channels (Channel A, B), plus two digital channels (Channel C, D)
- Signal Generator (10Hz to 1Mhz)
- Vertical solution: 8 bit, Sampling rate: 1kSa/s - 72MSa/S
- Power: Lipo battery
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Costumer review
15 of 15 people found the following review helpful.
good for being a mobile oscilloscope
By M. Poehler
Overall, I like this oscilloscope a lot.
The good:
This device has a lot(!) to offer for having such a small footprint. I love that they even squeezed in a function generator. Now I can create the test signal and check the output in one small device.
The bad:
The menu navigation is pretty bad. It takes awhile to figure out how to adjust all parameters. Sometimes I still get surprised how the cursor jumps between the sub menu and main menu.
The oscilloscope comes with all probes. The plugs of my probes are sitting so tight in the oscilloscope's ports that it is almost impossible to disconnected them without using pliers.
Also, when the device arrived the product seal of its retail box was broken. The seller insured me that he received all boxes like this, stating that the manufacture forgot to add some accessories and reopened them to complete the content. Anyway, my device is now over five month old and it still works fine and I am pretty happy with it.
3 of 3 people found the following review helpful.
Amazingly Useful for its Size
By Bret
This is a little tiny oscilloscope that fits in the palm of your hand. If you're looking for a full-featured, multi-channel oscilloscope, with a large screen to debug Gigahertz logic or something like that, this is NOT the oscilloscope for you. On the other hand, this scope is an indispensable tool in certain situations.
For example, I was having what turned out to be power related issues with a robot that operates in agricultural environments (i.e. out in the middle of nowhere with no access to electrical outlets or much of anything). The robot worked fine in the lab, but would fail in the field. It would have been quite awkward to use a full size oscilloscope in these conditions. With the DSO quad, I just used double-stick tape to stick it on the robot, connected the leads up to various signals, and within a few hours this oscilloscope pointed us to a problem that had previously cost us days of time to debug.
The sort of application where this scope shines is when you're out of the lab and/or development environment and now there are issues in real world environments. It's fairly inexpensive, very small, and battery powered and can be attached to just about anything, anywhere.
The color display is impressive given how small it is, though I'll admit that reading glasses were a must for me to be able to see it. The menus take some getting used to and aren't very intuitive, but they're not terribly difficult to use either. The triggering isn't fancy, but works well for simple edge and level triggers. The battery lasts at least hours (I have yet to run out of battery but charged it fairly frequently).
Again, if you need a high-speed, full of features oscilloscope, don't get this. But for the niche of small, portable, battery powered, and independent, it's really a great tool.
5 of 7 people found the following review helpful.
Beware the battery polarity!
By pete
You could destroy your new gadget due to mis-matched connectors! The plug on the included battery and the DSO Quad battery socket only interface one way, so this is not a user error. I plugged the battery into the device, and quickly became suspicious when I felt part of the device warming, even though it was turned off. I unplugged the battery immediately and did a web search and found this page: [...]. My device ended up not being harmed (afaik), but I reacted very quickly. Damage *will* happen if you leave it plugged in the wrong way.
In short, the polarity of the battery & plug can be mismatched with the polarity of the DSO's socket. There is an easy way to fix this. First determine if your battery connector is indeed wrong, following the guidance in the above link. Next, examine the plug on the battery wires, and you'll notice two plastic flaps that can be lifted up (with some pointy tool; I used a pen razor). When you lift the flap up, you can remove the leads. Swap and re-insert them, and you should be good to go.
This is an incredibly huge mistake, and I'm amazed that it hasn't been corrected yet (reports of this started over a year ago). Combined with the fact there are actually no included instructions on how to even open the case and insert the battery, my initial impressions were very low. However, having started to use it, it seems like a pretty nifty tool, and there's not much else on the market like it, so it still deserves some stars.
** Update **
It appears that my unit is indeed fried. The battery will not charge now, and the red light says on even when turned off and usb is disconnected.
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