HANMATEK HO11 Handheld Digital Oscilloscope - 10MHz Bandwidth, 48MSa/s High-Precision Sampling, 2.8" TFT Display, USB Rechargeable, Advanced Trigger System, Portable for Fieldwork

Bought this for my husband for his cb radios and he loves it. It’s easy to use and very durable and the price is just right.

This is a useful little electronic tool and has most of the settings available in professional equipment although the process of adjusting them is not intuitive. I did have a question about the screen turning off after 30 seconds, which the manufacturer answered promptly. The setting for this is called BL time and can be disabled. So far I am enjoying this very low cost, highly portable device.

I played around with it a little upon unboxing it and it was good for how cheap it was, but I realized that it only had one channel (I would prefer two) and the selection switch at the top would stick a little and mess up my selections. Overall, it looked very high quality, was easy to use, and had a lot of functionality for how small and inexpensive it was.

I used this to adjust the gain on car stereo amps to keep them from clipping. It's super handy. The display is small but it's fine for anything you would need a portable o-scope for. I have charged it once and used it a dozen times and the battery is still at full charge according to the indicator. I can't vouch for accuracy because I don't have an expensive O-scope to compare this to, but it's accurate enough to calibrate a stereo amp. I get pristine clean sound out of my stereo installs in minutes without having to go through long sessions of test tones trying to do it by ear.

Trigger function is useless. Freezes up. Waste of money.

I wanted an easy to use oscilloscope to measure voltages and look at waveforms from inverters. This has met my needs fine so far, but I'm not looking for issues that some folks might need a scope for.

It would be very cool to have portable scope that meets the specifications of this 10 MHz Hanmatek model. The HO11 does not. I had read most of the reviews, even the 1 and 2 star before buying, so my expectations were not too high. At a price of less than $40, I thought I'd give it a shot. A few improvements, maybe firmware fixes, would make one of these a great tool. I should mention a few good things. It feels sturdy and well built. The screen produces a nice easy to read waveform and measurement information. The battery life seems good. It runs a long time even after defeating the default automatic shutdown. There is a flip-down leg on the back so it will stand up on the workbench. The triggering works okay at lower frequencies and pulse waveforms remain stable when pulse width is varied. Screenshots can be taken and retrieved via USB. No driver needed with my W11 machine. Charging is via USB and it comes with a nice zipper pouch, manual and probe. Not so good is the '60 MHz' probe. Mine is closer to a 20 MHz probe. Pulse testing it show rise / fall times are around 19 nanoseconds. The probe comes with a plastic compensation adjust tool, color rings, etc. Other reviewers have mentioned a learning curve with the HO11. Functions and parameters are selected by pressing or rotating the 'Function Wheel' key. Step through the main menu by pressing the wheel key. Make selections by rotating left or right. In the aux menu, this is the opposite. Step through the menu by rotating left / right and make selections by pressing the wheel. IMO that might have been done better. I found it most confusing at first. The line through the middle of the screen is just that. A line. It is not 0 Volts. Also, moving the vertical position of a waveform will not also move the trigger level, as with other scopes. The trigger needs to be adjusted separately. Voltages generally read low, especially above about 6 MHz, and the waveform starts to look a bit wonky. Oddly, it looks pretty good at 20 MHz and up, and it begins to show a higher voltage than it should. The measured frequency (digital readout) will be correct yet a 25 MHz sine wave will be 1 MHz according to the horizontal scale. The voltage will read high Mine also has a bug that any voltage (dc or ac) will measure significantly lower if 50 ns / div is selected. Then switching back to 100 ns / div doesn't fix things. It goes a little crazy. I haven't noticed any screen artifacts or phantom 12 volts that others have mentioned. Mine is firmware version 1.0.27. No updated firmware available on their site as yet. I ain't gonna send it back. I can still use it for working on small projects, audio and low frequency things. But if I were going to buy, I'd probably consider one of the larger scope / meter models with bigger screen. Perhaps these will improve in the future, but for now 2 to 2.5 stars

This is a basic oscilloscope. It's not high tech and it's accuracy should be confirmed but if you need a visual of what a circuit is doing, this is a great option. It seems to be well built and comes with a nice case. The only downside is that it takes a while to learn and navigate the settings.

Para lo que cuesta es bastante util

Super

結構ちゃんとしたプローブが付属している 本体はシリコンケースで保護されており充電式でコードレスなので 車関係でも使いやすいのではないだろうか

Bien livré ok. Fonctionne bien avec bonne mesure des ondes, après paramétrage effectué. Bonne visibilité sur l'écran.

ottimo oscilloscopio. ha un'ottimo refresh nella visualizzazione dell'onda, costa un po' di piu' del suo gemello che ha una larghezza di banda piu' bassa con un refresh inaccettabile