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 a solid workhorse scope for many practical applications for entry to intermediate level use. My personal use cases for this scope are audio (including synthesizers and other generated audio), and HF ham radio. For these purposes, 70mhz is perfectly adequate. Having 4 channels adds a great deal of utility. The controls have a slightly different arrangement than many other brands, but have the same essential functionality. These differences are mostly in the knob and button controls and their orientation. Menus are similar to how other brands are arranged with any differences only being minor. I have only worked with FFT in the math, and had success doing basic frequency analysis. Doing that and basic scope functions let me play with resolutions and scaling functions. Both horizontal and vertical adjustments work as expected and I was able to get useful visualizations and data. The package size and layout is great for my purposes, big enough to easily use, small enough to set up in a wide range of work areas. The screen is easy to read and presents cleanly. You can hook this to a larger monitor through the HDMI interface, but you do not have any visual resolution advantage. I will likely continue using just the built in screen, only. All in all, a practical scope at a reasonable price. It will be great for troubleshooting, signal tracing, as well as basic equipment calibrating.

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.

Solid scope for the price. Really nice quality and easy too use. Not sure if setting can be saved from use to use.

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.

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.

The best deal on an oscilloscope available today. And with open-source software, its capabilities can be greatly expanded.

This is a really nice machine. Others have plenty of better-informed comments. I'll point out one cool thing: I had an old wireless mouse kicking around. I popped the receiver into the RIgol's USB-A port in the front, and boom! I now have a mouse for my scope. I actually much prefer it to the touch screen: less reaching, you don't obscure the screen while making selections, and the mouse is more precise. This worked without any messing around at all. So slick.

Update July 16 2025 - Rigol customer service is not what I would call great in terms of response time. First I had to call customer service where I was told to send an email to [email protected] explaining the problem and include proof of purchase and serial number. Several days later, I get an email response telling me they are sending me an RMA number with no explanation if they are mailing it or if it was supposed to be an email attachment. I am still waiting for RMA and the project I was using it for is on hold. I do not recommend Rigol if you need a scope you can rely on unless you can afford to buy a backup while you are waiting for them to do their part. Other electronic device companies I have dealt with in the past would drop ship a replacement immediately and have me return the defective one in the same box as the replacement. One of the gentlemen admitted that they are seeing this problem a lot. Perhaps this slow response is intentional because they don't have enough repaired ones in the pipeline. If I needed this for my day job I would be screwed. Have to change my original review. 40 days after I purchased it, it died and failed to boot up. I tried disconnecting power for several minutes and then boot again. It failed repeatedly. Disconnected power again and waited longer. Plugged it in and this time it booted. This unreliable behavior is unacceptable in a scope that is less than 2 months old. Will call Rigol customer service tomorrow to see what they will do. Great value in a portable oscilloscope. I am still learning about all the capabilities this Rigol entry level scope has. I was using a very old analog scope and a OWON handheld 8 bit scope. The OWON scope is great for what it is but I needed better resolution and sampling rate to troubleshoot some annoying noise problems in audio equipment where the noise signal was > 150 kHz. The Rigol was able to capture the offending signal perfectly which enabled me figure out what was going on. Video is the noise signal with no test signal output from my analyzer. Another great feature is that this can be powerd from a 145 watt portable power bank made by Baeseus. That opens the door for automotive testing where one needs to be isolated from AC mains. I am sure there are other portable applications as well but I am a car guy.