RIGOL Digital Oscilloscope DHO804 70MHz Frequency Band + 12-bit Vertical Resolution + Maximum 1.25 GSa/s Sample Rate + 1000,000 wfms/s Waveform Capture Rate + 4 Analog Channels

This is my second oscilloscope. My first was a "starter" scope, which worked OK and did the job. But it only had two channels, and I needed more. Then came the Rigol DHO804 whose price was surprisingly low with a very solid reputation.The Rigol is clearly a next-level class of scope. This shows up in the relative absence of lock-ups (not that they aren't reported to have some), the accuracy of the lower millivolt measurements, and the general sturdiness/stability of the physical and software qualities of the scope. There's a lot going on in this scope, and it works as expected.One significant value point is that the scope's software uses Android as its operating system. Combined with the touch screen which works well, the user interface is clean and sophisticated. For example, it presents transparent dialog boxes in which you can change settings (in the foreground) while watching how that affects the display output (which is transparently visible in the background behind the dialog box). Nice!Though this scope is limited to 70Mhz input bandwidth, aside from that limitation, it appears to use pretty much the same software and UI as Rigol's faster, more expensive scopes. So as long as that upper bound of frequency is acceptable, you get almost all the features and functionality you'll see in higher-end scopes. It feels like a professional scope.Another great feature is that the scope has a built-in web interface that serves up a remote-control window in your web browser. This lets me take full control of the scope UI using my laptop. The remote display is quite responsive (not laggy at all). I plugged a USB wifi adapter into the Rigol (instructions for this are out on the web), and the whole wireless remote setup fell right into place. By using the remote UI, fine tuning the scope and saving/naming screenshots is a snap.This is a great scope, and a great value. Unless you are a professional with prior experience and a need for a particular functionality not provided by this scope, you will not be dissatisfied. It's a very tight, very well made, very capable package.

Design:Rigol definitely stepped their game up this time. I've been using mostly Siglent due to better interface. Not this time. Rigol cleaned up the front panel, moved a lot of features into intuitive touch-screen menus.Hardware:Overall I feel like this is a pretty big leap over their older scopes in this price segment.This scope is basically an android tablet. It is tiny, gets powered by a USB-C power supply. Hardware is very power-efficient. Screen is responsive and precise. Probes are standard cheap BNC type. Perfectly adequate for 70MHz.Accuracy:For the price it is very good. The added resolution is nice, but I wouldn't say it's a game changer. I just don't work with that level precision in my garage. Triggering is still razor sharp. I heard there is a way to upgrade memory depth, which I guess could be very helpful if you're trying to catch a longer signal. Acquires AM and FM waves very accurately in AC-coupling mode.Functionality:It has all of the math features that you'd need. The FFT is blazing fast. This truly feels like a generational leap compared to last gen. Word on the block is that Rigol is using a custom ASIC to achieve such speeds.Areas to improve:I think the physical interface could be improved even more. Rigol does their typical Rigol thing with using different fonts around the panel. The included probe color rings don't match CH4. Honestly, the touch screen is so good that I would just consider using a 10" display and removing physical controls for the next iteration.

The media could not be loaded. This Rigol DHO814 oscilloscope is a great value, with lots of premium features. So far, I have tried several basic multi-channel measurements, along with some math.The scope probe colored rings do not match!Someone made a poor choice, for the colors used for the 4 channels. I attached an image and a video showing the probe ring color issues.When pop-up windows are displayed, it is difficult to press on the small X button, in the window's top right corner, to close the window. The active area for these buttons should be increased.Having the built-in manual is very helpful, but it does not have a search feature. I still have to use my PC or phone to search for specific keywords in the user manual. The table of contents does have links, so most topics can be found from there.In X-Y mode, persistence is sometimes an issue. When you are viewing a complex Lissajous pattern, parts of the waveform are missing. The scope has an advanced settings menu for X-Y mode, but it is grayed-out, with a note that these features will be added in later. I have not attempted to upgrade the firmware yet, so maybe this advanced menu has been implemented.

Many state the best bang for the price and feature rich. I believe it! Did initial testing and quite please with the results. Nice and small and compact and fits in my very limited workspace.Only negative thing it gave off a slight heat burning smell. Was aware of this from the reviews. So been turning on and leaving it on at least 8-12hrs. over last few days. And the smell seems to be going away. So just a new smell needing to be heated out over time.Wanted to go for cheaper 70mhz. but would have had to wait another week to 10 days. And was itching to get one so went with the 100mhz. and 4 channels tho have doubts i need 4. And it was delivered in 2 days.Quite Happy with it! As probably the best scope you can get for under $500 mark. And highly recommend it! A plus it is also hackable like the 70mhz to increase bandwith. The DHO 814 can be hacked to 250mhz,50Mpts,Can and Lin decoding.