YEAPOOK Handheld Mini Portable Digital Oscilloscope 5012h Oscilloscope Kit with 100MHz Bandwidth 500MS/s Sampling Rate (ADS5012h EU)

I got this as a friend had recommended it. It does a good job of fault finding in CPU, BIOS, PCH (Chipset, Southbridge), and any other chips which carry data signals.

After watching a number videos which gave mixed reviews of the 5012h Oscilloscope, I wasn't sure what to expect. I wanted a truly portable setup to help configure a DiY hearing aid inductive loop audio system at a relations home - for this it is simply superb. Very easy to use, gave good results when compared to my other bench oscilloscopes (Rigol and Siglent) so highly recommended especially for audio or low frequency RF use, I'd imagine it's useful up to at least 10-20MHz. The weak points are triggering, no zoom on a static waveform, and limited measurement capabilities (no cursors, for example). Otherwise it's great and a very useful addition to my toolbox.

I purchased this oscilloscope to help with maintenance of my 70 year old Jukebox. Its main use will be for fault finding the amplifier when the need arises. I have been able to do some testing and so far it has met my expectations. For a beginner, such as myself, in using an oscilloscope a more comprehensive user's manual would be helpful but I 'm sure the more I use it the more useful it will become.

Nice small scope easy to use clear screen east to read . Has some good instructions .

Easy to use and portable.

My small(ish) 7Mhz portable scope used for low frequency work developed an HT fault, and my huge 40Mhz ex-lab scope is a bit big to lug around anymore, so bought this one. Boy! What a difference! I can hold in my hand 10/100mhz scope that does everything I need. Ok, its not laboratory quality, but at this price, its a snip, and pretty good for most work. Its really designed for home constructor/electronics dabbler and for outside workers that need a good portable scope for work. Other buyers have given a more in-depth reports on its workings, but for me its a damn good little scope. Recommended.

For what it can actually do for the price - is surprising.

Buen producto, se recomienda

At first I was sure it was a misprint - a hand-held 100 MHz Scope so reasonably priced - NO, I mean SO VERY LOW priced, with good sensitivity that includes auto-adjustment for sweep speed and amplitude and it triggers consistently on common wave forms? I'll wake up in a minute - pinch pinch, Ahhh... then I started reading reviews and someone who is experienced found a weakness (I REALLY didn't want anyone to find any serious faults <sigh>), and what he described looked like a serious problem, and one I would typically expect as someone who has developed firmware for small devices such as this (but never for a baby oscope THIS cute and well equiped). I left him a comment saying that maybe he had a defective unit. Hey, IT HAPPENS! I've sent things back that failed right out of the box. Not wishing bad luck on anyone (but hoping he had some bad luck), I took a chance and ordered one. I was also very motivated because the 4 channel 350 MHz delayed sweep Tektronix I bought surplus a few years back lit up like a bonfire on my work bench one afternoon a month or two ago - and I'm talking like a propane hot dog cooker run amok! (And I'm STILL looking for parts - it fried several traces on a PCB, and a dozen parts looked more like charcoal than anything else on Earth! (except real charcoal) - Anyway... like I said, I ordered one and took a chance. And for once, it worked out GREAT! It usually doesn't when someone who obviously knows what he is talking about says it doesn't work - and I DO believe him when he says his unit did not work. I can tell he KNOWS scopes.Of course, you know what the first thing I checked was when I got it - I grabbed my dual channel signal generator that does Burst mode and set it up - I went to channel 2 made sure it its was defaulted to 5 volts, went back to channel 1 and set the freq to 100KHz (10 was too low for a decent test) plus I set the duty cycle to 25% to thin the pulses a wee bit, then went to MOD (modulation) and set the type to BURST, and promptly hooked up "The Little Itty Bitty oScope that Could" and hit the AUTO button! And WHAMO, the firmware did its thing and it set up the amplitude and horizontal sweep correctly and I had 5 of the prettiest little pulses you could want solidly on the sceen - BUT WAIT - the very first part of the first pulse was missing... YIKES! (...QUEUE the Ominous music...), yes the trigger circuit locked beautifully, but I wanted - no NEEDED - to see what the other reviewer looked for - the leading edge of the VERY FIRST pulse! Then I remembered what I read in the little booklet - the MODE button toggled the little cursor keys (up, down, left, right) between Voltage/Sweep-speed and Trigger adjust/delay when trigger is in Normal mode - so into NORMAL mode I went and sure enough, the left and right cursor smoothly adjusted the pulse train to the right, and there it was, the leading edge trigger point of the 5 pulse burst (SEE THE IMAGE I uploaded).So Whinnie, Tigger and I have a new toy that works quite well (as advertised) for the 100 acre woods workshop (100 MHz woods?), and we just left Eyore a ways back on the trail asking "Oh Pooh, are you sure it isn't broken? Mine are always broken... always... oh bother."And I thank the other reviewer who did the comprehensive review (I learned something because of his detailed review), and I am sorry his unit didn't work. He may want to give it another try. I am back to poking around in the HF amplifiers I was testing and adjusting, and this little scope is my new Best Friend, at least until they come out with a 500MHz 4 channel unit with control via mental telepathy for 50 bucks! YOWZA!And BTW, the battery REALLY DOES last at last 8 hours! I kid thee not. VERY IMPRESSIVE! But I DO have one REAL CON. The micro-USB charge port is recessed so far, they had to supply a longer than normal USB plug - most regular length ones will not work. But, that this is SO minor I am calling it a feature and not a bug.

Like many others, I was skeptical about the low price. Surely this could not be any good, for that price. However, reviews in various electronics forums convinced me to try it out.This device is small enough to fit in the hand easily. It comes in a soft silicone cover that keeps the unit from sliding, and offers some protection. It's bright yellow, making it easy to find on a cluttered bench.Using it is simple. You hook it up, turn it on, set your trigger as desired, and then - when you're ready to see the waveform, press the "Auto" button. The scope automatically displays the waveform in an appropriate way, with the time base and signal amplitude adjusted to accomplish this. Once you've got this basic waveform, you can change it as desired, increase or decrease its amplitude, show more or fewer cycles of the signal.To save a waveform requires you to press the "Save" button. I've only gone up to around 100 saved screens, but the specs say you can save around 2000 of them. I don't think I'll need that many, but it's nice to know it's available.The 5012H comes with a small "manual" which is about 8 pages long. The manual is informative and written in decent - though not perfect - English. I'm pleased that I don't have to struggle with well-intentioned but unintelligible instructions that so often accompany items from a foreign country. It is enough to get you started on how to use the scope.This is one of the times when an inexpensive device exceeded my expectations. It is well-designed and highly useful.

Let me start by saying that my last experience with a scope was with a Tektronix 453 and 454, after which I switched to software as a profession.When I received the unit, I eagerly turned it on and stuck my finger on the probe to see if it would pick up the 60 Hz room noise, and I was delighted that it immediately gave me a usable display!I must say that I miss the dials, knobs, and switches of the old scopes, but I understand what such things cost, both in terms of dollars and real estate.I have a beef with the instructions regarding the Menu functions. I don't think the manual states anywhere that the Mode button is used as an 'enter' key when altering any menu settings. I asked an Amazon question regarding this, with no answer from anyone. Then I did a general internet search on the device, and found a very useful and complete evaluation by a Brit. His video showed various Menu sequences with the Mode button. He also demonstrated that the scope does not perform at 100 MHz, and is good only to about 40 MHz. Luckily, that is not an issue for my usage.I knocked off points for not including a USB-power brick, and for requiring a peculiar deep USB power plug, which is supplied, but is probably not replaceable.

January 9, 2020 Initial ReviewDue to power plant shutdowns in California we bought a generator to power essential items in the house. We had an electrician install a 30A connector for the generator that is wired into our house power panel. Total cost was about $2,000 so adding a little bit for an instrument like this little Oscilloscope wasn't a big cost factor. What a great little tool this is.I watched a video of someone observing the waveform of a 120V outlet from their generator. Based on that video I went on a search for a similar meter, then ran across this nifty little O-Scope. I had used large, expensive, complex oscilloscopes in my career and was quite surprised to find this one for such a reasonable price, and it being small, light, and portable.All I really want to do is take a look at how clean the AC power is coming out of the new generator. We have a friend who owns three generators and has had to use them recently. They reported that the unclean (assumed) power coming out of their generators was damaging equipment in their house including their stove and flat screen.In order to use the Yeapook I first made up a pigtail with the three wires exposed. I labeled the wires, then plugged the pigtail into a power strip. I connected the probe and ground wire, turned the O-Scope on, and switched on the power strip. The scope showed activity but it wasn't triggering. I simply pushed the Auto button and the clean city 120V power waveform appeared stable on the display. That's all I needed to do.The next event will be to get the generator out of the garage, start it up, and repeat the same check with the scope on that 120V source. If the signal is clean I will trust the generator to power our electronic devices. If the signal is not clean I will restrict what can be powered by the generator. An alternative if the signal isn't clean would be to use the 120V output of the generator to charge batteries which can then in turn be used to power electronic devices.I'm very pleased with this little Yeapook Oscilloscope.