YEAPOOK ADS1014D 2 in 1 Digital Oscilloscope DDS Signal Generator with 2 Channels 100Mhz Bandwidth 1GSa/s Sampling Rate (ADS1014D)

This Model is £280 or more from some sellers.A bit Fiddly to setup but I am d now, which doesn't help.Love the Save Screen waveform function.Very sensitive even with Probes set on 1 setting.

I have given this a five-star review because I am more pleased with it than I expected to be.To have a quick look at what it could do I plugged it in straight out of the box (using a wall-socket USB which can supply 2.1A at 5V). I then pressed the green signal-generator button and set up a 500Hz square wave (using the various navigation arrows plus OK). I then hooked one of the probes to the signal output (using the supplied signal output lead), pressed the auto button and there was the square wave on the screen. I then just played around with it to familiarise myself with the controls. You can always just unplug the leads and factory reset the whole thing via the menu button.My main worry was that some previous reviews have mentioned various bugs that needed fixing by updating the firmware for the FNIRSI 1014D (which is what this device clearly is). However, when I looked for those bugs, they didn’t seem to be present. For example, a review on the famous video site said that you couldn’t switch between AC and DC coupling on one of the channels without the update– you can on mine. I assume that the ‘scope I have was shipped (February 2022) with the latest firmware updates, which is why I am more pleased than I expected.In the box you get exactly the same manual that you can download from FNIRSI (with just the name changed). Whoever wrote the manual probably does not have English as their first language, but, having said that, it’s not bad – they obviously know what they are talking about. Just heed the ‘Serious Warning’ so that you don’t destroy your ‘scope. Other than that, everything becomes clear when you experiment with the machine. The manual is certainly not exhaustive. You will have to figure out all sorts of things by common sense and experiment (for example, the voltage values on the horizontal cursers give the voltage difference between the cursers, and so on). There is also a leaflet with the probes (and a bag of bits including screwdriver) that explains how to compensate the probes. I did that and it works easily.If you are new to oscilloscopes, like me, I would recommend a read of something like ‘XYZs of Oscilloscopes ‘, free to download from Tektronix and/or have a look at some videos. Pricewise, apparently it’s a bargain compared to other ‘scopes. For me, for occasional hobby use, it’s a bit of chunk of money. On the other hand, it does cost less than two tanks of fuel.

Insruction manual obviously not written by someone who does not have English as their first language.

For the price, the scope is one the best options for hobby electronics and those who like to tinker with electronics. I was a bit apprehensive about the quality based on some reviews I saw and read, but I was quite happy with what I got. If you don't expect this to operate like something that is twice the cost, it does more than what is expected. It has a nice simple interface, ability to save pictures and waves, generate a good set of signals and comes with everything you need to get started, including two 1-10X probes, crocodile clips, USB-to-USB cable and a UK power adapter, . It operates on 5V 2A USB power supply so it is portable if you have a power bank. External build quality is decent, screen is very clear. There is a bit of a noise you can observe with nothing connected but I would put this down to interference from internal wave generation circuit and this does not affect the measurement if you are not going to use it for highly precise applications - in which case you would be better off with high spec scope. I have used this to test some signals in a switching power supply (secondary only), TV mainboard signals and some small Arduino projects and was good enough for the price.In summary, there are few drawbacks but this a good scope for hobbyists and use in simple repair work for most household electronic circuits.

This oscilloscope was a little tricky out of the box. Firstly, the included power supply was of the 2 prong variety, but this was expected as mentioned and photographed. The manual prohibits using other power supplies, but I found no issue with a high-quality mobile phone charger.I also ran into (and overcome) two further issues out of the box. Firstly, I was unable to get the trigger function to work reliably, but this was resolved by updating to the latest 'FNIRSI' firmware (this is a rebadged FNIRSI 1014d). The second trouble I had was that channel 1 was reading far too low on the 1V scale, this was caused by a sticky relay, and rapidly switching the voltage div knob fixed that. (See photo for the wave)It is great that this oscilloscope can operate from an isolated 5v supply, it makes measurements of signals that reference a non-earth potential possible, though a little dangerous. The integrated function generator is nice to have, it would be even better if it had a level control for it, as it is a 5V signal.

27mhz not 100mhz not good its con

I’m still dubious about support: I’m pretty sure this is a re-badged FNIRSI model, but I can find no web-presence for Yeapook (downloadable user guides/firmware updates if needed). At the price I think it’s hard to beat. Annoyingly, it came with a Chinese power adapter (easily fixed - it needs a typical, isolated, 2A+ USB supply). After reading a number of reviews (mostly FNIRSI) I gave it a quick checkout. It’s not the most accurate - less so as you get towards 100MHz (but a 100MHz scope only reproduces sinusoid fundamentals near the limit, so you can’t expect it to recreate a 100MHz square wave). I was also worried about reports of wildly inaccurate measurements, but so far it looks quite good (just make sure the probe info is set up properly, and that you aren’t using too slow a timebase and actually looking at an ‘aliased’ signal reconstruction). I do find CH1 seems to have a little inbuilt overshoot (after adjusting the probe). For the price I have an extremely good, hobbyists diagnostic tool with a useful signal generator (& - unless I can find a way to extract/analyse the data - pretty pointless FFT analysis)