Toy scope DSO112A ... - Page 1
Forum section: electronics / testgear

author: BravoV
author_rank: Super Contributor
timestamp: January 19, 2018, 04:46:43 pm
content: This toy scope with 2 Mhz bandwidth, 2mV/div sensitivity and max input at 50 Vpk, just curious if this can be used say like to mount it as panel display at diy lab/bench adjustable DC low volt psu to monitor the out put quality say like ripple especially the switching type ? Too low bandwidth ? Or any other practical use ?With the price below US$50 shipped, its so tempting, heck even just for the bling especially at the diy bench power supply or even at the PC case.https://youtu.be/fGU9LoEpQFw

author: Peabody
author_rank: Super Contributor
timestamp: January 19, 2018, 05:55:01 pm
content: That's one of several budget scopes made by jyetech.com. I have the DSO150 scope which comes in kit form, currently selling for $21 at Banggood, plus another $10 for a power supply and real scope probe. These scopes do remarkably well for relatively slow speed stuff. The one you found looks pretty slick, particularly the touch screen and external trigger. But only one channel.Fakes of these scopes are widely available on Ali Express and Ebay, so you have to be careful where you order them from. So far, Banggood appears to be a legit seller. You can read all about this problem on the jyetech website.I will say that support for these scopes is quite good via the jyetech forum. And they continue to issue firmware updates on the older scopes, including adding new features.For the money, though, you might also want to consider one of the Hantek USB scopes - if you have an old laptop that you could dedicate to it. I saw the 6022BE on Ebay recently for $52. And that would give you two channels and I suspect a bit more speed.I would think either would be fine for monitoring power supply noise at any switching speed you're likely to encounter. Also useful for servos, steppers, oscillators, PWM, and serial communications up to a point.

author: GreyWoolfe
author_rank: Unknown
timestamp: January 20, 2018, 02:54:58 pm
content: The Hantek is still $52 on evilbay. I might get one and use it has a monitor scope for my ham radio transceiver. I can stick a 17" monitor on my computer and have a much larger screen than my GW Instek GOS-6112 that I am using.

author: jneudorf
author_rank: Newbie
timestamp: January 24, 2018, 08:18:45 pm
content: Thanks for the video. I see at 2:50, the battery is a 503759 3.7V lithium. A search of Aliexpress shows these are about $6 and need a special shipper, since standard Chinese mail won't accept them. So people who get it without a battery aren't SOL.Mine has an almost invisible switch near the USB connector; it's necessary to flip this using a paperclip before the battery will work. I was about to freak out about the battery being missing until I read the manual, which is in surprisingly excellent English.https://www.jyetech.com/Products/LcdScope/UserManual_112A.pdfThe USB acts as a serial port, and the manual has sufficiently good documentation that it should be possible to use this as a data logger (only 8 bits though, it's an oscilloscope, not a precision instrument) or USB scope, but that doesn't seem to have happened yet; I think someone may have started an attempt at integrating it with sigrok, but it doesn't seem to have happened.Regardless, you can capture a waveform to a csv file using the old-school xmodem protocol, so, it seems like it might actually be useful!

author: ez24
author_rank: Super Contributor
timestamp: January 24, 2018, 08:29:31 pm
content: Quote from: BravoV on January 19, 2018, 04:46:43 pmI have a DSO112 (not A) and checked it to 5 MHz and it was dead on with my Rigol. I use it more than the Rigol. It is touchscreen and somewhat hard to use with large fingers. You have to be careful and get one with a battery. I did not know they are being counterfeited. You will not be sorry.

author: BravoV
author_rank: Super Contributor
timestamp: January 28, 2018, 07:58:57 am
content: Thanks for the info on counterfeits, note taken.Quote from: ez24 on January 24, 2018, 08:29:31 pmThanks, great to know its spot on with a real scope even at 5 Mhz.Curious what did you used it often on as you said ?

author: pepelevamp
author_rank: Regular Contributor
timestamp: December 14, 2019, 05:50:11 am
content: Sorry to revive an ancient post but I have made a chassis for this scope that holds two 18650 batteries.Its a bit bigger I know, but its still something you can carry around.Comes with a kick stand and also sits at a slight incline anyway.https://www.thingiverse.com/thing:4047330