FNIRSI DSO-TC3 Oscilloscope - 3-in-1 Handheld Oscilloscope & DDS Signal Generator & Transistor Tester, 500Khz Bandwidth 10MSa/s Sampling Rate, 6 Types of Waveforms, Transistors Measure

OK. I needed an inexpensive scope for occasional audio repair & field work. You need to have adapters to use the scope with standard BNC probe & gnd. connectors. The tester on the front panel I'm surprised is accurate for transitor/diode/res readings. Was unable to use the scope portion as there is a package needed with the probe & grd. lug to adapt BNC to the mini input connectors. The company said Amazon was responsible for any missing items as the shipper. Amazon insisted Fnirsi should provide missing items. To keep drama to a minimum I am returning the item as defective while Amazon ships me a replacement that hopefully has all I need to use the scope. Will add to my review when I receive a complete unit. Really hated returning it as the semiconductor front panel test portion was very accurate & hoping the replacement is equally accurate. OK so I returned the unit that was missing certain items & just received the replacement DSO-TC3. It had all the items that were missing from my original order. I give the front panel semiconductor test a try & am impressed by the accuracy & ease of use. As an added bonus I didn't know it also had an infra-red device tester that not only verifies if the TV or stereo remote is working but also gives you all the codes. I give this a 5star plus for these features. I haven't tested the scope probe yet but I'm sure it'll work fine within it's parameters. Good for audio but may not for RF work but then again it's specs weren't designed for those frequencies. Overall I am very satisfied & would recommend this for anyone who tinkers with electronics. This device does quite a bit for it's modest price.

This is a really cool product and the auto detection of parts being test still a bit immature IMHO. I bought this mostly for checking parts. Most of the time, it will identify the part and checks correctly. However, it unexpectedly fails at checking a 680 ohm resistor. I did a calibration just to rule out user error but it still doesn't recognize the resistor. The check took a much longer for the resistor and it came out as a capacitor. The resistor is verified with a multimeter. I would use this device however I will also double verify with another known good meter.

“I couldn’t be happier with this purchase! The quality is outstanding, and it’s clear a lot of thought went into the design and functionality. This product has exceeded my expectations in every way, offering a perfect balance of performance, durability, and style. What truly sets this product apart is how well it delivers on its promises. It’s incredibly easy to use, and you can tell it’s built to last. Whether you’re looking for something reliable for everyday use or a high-performing option for special occasions, this is it. On top of all that, the value for the price is unbeatable. It feels like a premium product without the hefty price tag. If you’re on the fence about getting this, don’t hesitate—trust me, you won’t regret it. This is one of those rare finds that ticks every box!”

Bought this little instrument and the component tester, oscilloscope, and function generator works well. Compared it to another component tester that I have and its almost identical in function. The tester also has an audio function generator and audio oscilloscope. The oscilloscope is limited to audio because of its bandwidth. However its fine for learning electronics and doing quick checks. It does not replace even older Tektronix or HP Scopes as their function and bandwidth are much more capable. I do recommend this little tester as it does alot for the money you spend. Would I buy it again , yes..

The title says it all. It doesn't read Germabium transistors correctly. It either reads them as a resistor or some type of diode. Testing for the hFE of Germanium transistors was the main reason I got this. I already have a cheaper tester that tests everything else I would need to test, including some (but not all) of my Germanium transistors. I got this thinking that it would be an upgrade with some extra features, which it is and it does However, it does not do that one, specific thing I got it for, and I didn't find anywhere that mentioned this. So had to take off 1 star for that. Also, updating the firmware doesn't really work on my MacBook. It says in the directions I found that it "recommend" using a PC with Windows. Not a big deal because I also have a PC and laptop running Wibdows 11, but that's still another extra annoyance. So took off another star. It seems to measure everything else ok. I haven't really tried much other than the component tester and some of the features in its basic "Tools" section. So I can't really attest to how well the oscilloscope or anything else works. I do plan on learning to use an oscilloscope though, so I figured I could mess around with that a little. Otherwise, I'd probably send this back. Very disappointing. I don't normally do reviews like this, but I really wish I had found a review that mentioned these shortcomings before I bought this. That would have spared me a lot of time, money and frustration. So I felt it was my duty to let others know about all this. Mainly the fact that it won't measure Germanium transistors. That just seems like a very basic thing that pretty much any component tester should be able to do!

Fnersi makes good stuff

I have 6 oscilloscopes, now 7 scopes with this one. It was purchased for its semiconductor testing feature. This feature works quite well with transistors, Fets, diodes and similar. The specs claim that it can check capacitors down to some 25 Pf. The unit I have won't recognize any capacitor smaller than about 300 PicoFarads. I like its ability to recognize any three pin semiconductor, even though you insert it forwards or backwards. Then it displays lead connections, and for transistors, its gain.

Update, 08/31/2023: this is an update to my recent review. I got the cables with the help from the FNIRSI company themselves. They've been very kind to help me out and provide the cables that were missing from the original order. The unit is all there now. Like I said the unit works fine when I was using it as a test for components. Now that I have the cables I can test the other two options, the oscilloscope and the signal generator. :-) Thank you again to the company FNIRSI, for your support Original review---- Although the unit was brand new and still sealed, there is not fully usable . I was able to test various components. And it worked fine. I really liked unit because of that function. When I tried to use the oscilloscope mode or the function generator mode, I noticed that there was supposed to be some cables to go along with it and the little adapter that hooks the cable to the top three connectors. But there was none. So I cannot use this to its full potential. If yours did not come with any of the parts circled in red in the included picture that I'm missing, I like to know how I can get replacements for the missing parts?

All functions worked as expected... Dso worked perfectly, dds worked (shown in the picture)

I bought this unit to replace a very cheap clone DSO-150 oscilloscope I've had for a number of years. The DSO-150 was an adequate hobbyist scope, but it needed an external 9V power supply and had no additional functions beyond the scope itself. The DSO-TC3 is an ideal tool for the hobbyist; it has a basic single-channel oscilloscope, a signal generator, and a component tester, all in a small, well-made package powered by a rechargeable battery. Operation is fairly intuitive, and anyone learning about electronics or dabbling in microcontrollers will appreciate how helpful the information this tool provides can be. I'd love to have a $$$$ Siglent scope, but out in the field, troubleshooting a flow meter pulse output to a high-speed counter module, I was happy to have the small hand-held DSO-TC3; it performed well and provided all the info I needed to resolve the issue. The 10x probe setting increases the scope's 40V maximum to 400V, so you can stick it in AC outlets or on dimmer switch outputs for a fun (and possibly painful) learning experience. It's not perfect; the scope trace can be a little jittery and some reviewers complain about suspect capacitor values from the component tester, but for the price, it's a really good multipurpose tool. The firmware version in the unit I received is V0.3, which appears to be the latest release at this time.

i'm an auto electrician, unfortunately the output signal skips/ hiccups and doesn't produce a clean and controlled signal. as im testing some delicate gauges and sensors i cannot risk using this item for its intended purpose. seller has refunded me the full cost of the item after requesting a refund.

buen producto, cumple con lo necesario para mediciones a nivel principiante de electrónica

Es preciso para realizar tests de componentes