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FNIRSI DSO-TC3 Oscilloscope - 3-in-1 Handheld Oscilloscope & DDS Signal Generator & Transistor Tester
Handheld Oscilloscope
- DSO-TC3 oscilloscope has a real-time sampling rate of 10MS/s and a 500kHz bandwidth.
- With complete trigger function (Single, Normal, Automatic), it can be used freely for both periodic analog signals and aperiodic digital signals.
- Up to ±400V voltage signal can be measured.
- Equipped with efficient one-key AUTO, the measured waveform can be displayed without cumbersome adjustment.
Transistor Tester
- DSO-TC3 is especially suitable for fast pairing of transistors, identification of mixed surface mount and wordless components, and preliminary screening of small batch components.
- DSO-TC3 can automatically identify and measure various transistors.Including NPN and PNP transistors, N-channel and P-channel field effect transistors, junction field effect transistors, diodes, dual diodes, thyristors, and resistors, inductors, capacitors and other passive components. Automatic detection of pin definition. Automatically analyze NEC protocol infrared code.
- DSO-TC3 also can identify device type, pin polarity, hFE, turn-on voltage, junction capacitance; can test capacitance, resistance, inductance components, etc.
Function Signal Generator
- The signal generator has a total of 6 waveforms to choose from, with adjustable frequency and amplitude.
- Triangle wave : 1-10KHz/0-3.3V/50%. Square wave : 1-100KHz/3.3V/50%. Pulse wave : 1-100KHz/3.3V/0-100%. Triangle wave : 1-10KHz/0-3.3V/50%. Ramp : 1-10KHz/0-3.3V/0-100%. DC 0-3.3V
Tool Box
- Automatic detection of pin definition.
- Automatically analyze NEC protocol infrared code.
- Other functional modes: Including circuit continuity test, 0~40V input voltage measurement, PWM output,0~32V regulated diode measurement, DS18B20 temperature sensor measurement, DHT11 temperature and humidity sensor measurement, etc.
DSO-TC3 Basic Parameters
- Display screen：2.4 inch TFT color screen, LED backlight
- Supply voltage：Rechargeable lithium battery
- Charging specififications：USB Type-C，+5V
- Product volume：79*103*31mm
- Bracket specififications：All-in-one foldable stand
Package List
1. DSO-TC3*1, 2. P6100 High Voltage Probe*1, 3. Adapter*1, 4. Ordinary Probe*1,
5. Test Hook*3, 6. Packing Box*1, 7. Manual*1, 8. Type-C Charging Cable*1
JesseA77
Reviewed in the United States on February 4, 2025
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!
smallproject_guy
Reviewed in the United States on February 4, 2025
1 love the updated component tester!2 oscilloscope was the lovely strawberry on top!3 finally, i think i found a use for the signal generator also!my tiny workbench area is ready for simple jobs and disassembly of components now!
Cory D
Reviewed in the United States on February 24, 2025
Oscilloscopes are great!
Wayupnorth
Reviewed in Canada on February 16, 2025
We bought this for our son who loves tinkering with electronics. it was a gam changer as now he can properly test components, identify components and use the proper items in his builds, it is very well built and comes with all the connections and leads you will want to start trouble shooting, testing or building. In todays world it is an invaluable tool in your box. If you are sitting on a fence on this, get one you will not be disappointed.
Luiblonc
Reviewed in the United States on January 24, 2025
“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!”
Mansi
Reviewed in India on August 11, 2024
All functions worked as expected... Dso worked perfectly, dds worked (shown in the picture)
Jw
Reviewed in Australia on August 10, 2024
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.
rhmc
Reviewed in the United States on March 8, 2024
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..
Van
Reviewed in the United States on December 11, 2024
Performs as advertised. Great value for the home hobbyist or professional technician. I would have loved to have something like this when I was on the job.
Customer
Reviewed in Canada on October 8, 2024
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.
p kalyan kumar
Reviewed in India on October 10, 2024
hi! The product is good but this connector tip is broken, please help us out on this issue.... got to know while using the device.......
Dog
Reviewed in the United States on August 22, 2023
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 supportOriginal 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?
J. B.
Reviewed in the United States on July 25, 2023
This scope is easy to use and very nice. For the price it's amazing. Unfortunately mine lacked the mcx male to female bnc adapter needed to connect the scope to it's probe. Fortunately Amazon sent me one and gave me a partial refund, enough to pay for the part but I did lose a few days of testing time, still a bargain. Next time I'd probably spend more to get more bandwidth. The signal generator is nice too and the battery which I thought would be a pain, actually makes it very easy to move the scope to whereever I want to test. Very helpful!
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