#1508 FNIRSI DSO-TC3 Digital Oscilloscope Transistor Tester Function Signal Generator review

Hello, Can it be used in automotive diagnostics? Does it support CAN, LIN and FlexRay protocols? And if not so what is the affordable one do you recommend for automotive repair?

Hi, thx for the video. I have a problem to conect it to my Pc, when i plug the Usb it tries to find the port Com drivers, but nothing, it can't find any driver. I use Win7 64bit, maybe the old win7 can be the problem? Do you know where i can download the drivers manually? Grazie

I got it, and i do not understand why when i measure a capacitor, it gives to me different value of Vloss. If i make 10 measurement on the same capacitor i get 8 different value of Vloss...... what is the reason? Thanks for the video

This scope is not good by any means. The much wiser choice is ZOTEK/ZOYI ZT702S (a.k.a. ANENG AOS02) or (I don't believe I'm writing this) FNIRSI DPOX180H. For transistor tester - just buy it separately.

Its not good quality. Look at the component tester in the vid. Damaged from the factory. Its $100 if you buy it twice after the first one stops working one month or one year later. All the cheapest chinese stuff looks amazing value but you have to buy it over and over again. I use double or triple price when comparing with a budget alternative from brand name company that may run for years with no problems.

Great review thanks!

Thanks for the interesting YT. Years ago I purchased two different M-Testers (aka Mega328), mainly for testing transistors. I was interested enough in this device to download the manual. Which says those funny little connectors are called MCX connectors. I would use a short RG-174 adapter cable to reduce any stress placed on the DSO-3TC connectors. I may end up buying one of these just because it's a cute, small tester with lots of basic functions for a low cost. Or wait to see what additional stuff is added to future devices of this type. It sure beats the Eico & Heathkit non-triggered vacuum tube 5 inch scopes I started out with! Yeah, I'm another old retired electronics guy. I used to service medical electronics equipment and found your choice of an EKG waveform interesting as well.

Any problem with new fw (0.3). Difficult to read low value capacitor or induttance..

Impressive you have one of the old IMSAI. Remember reading and saw the picture about it. Waited until Sinclair sendt Specturm 48 K on the marked.

this "tool" is a simple toy that gives very approximate indications. Obviously I don't expect performance from a professional machine, but if, for example, I set a sine frequency at 30K, I expect an effective frequency of 30K not 31.2K, this is unacceptable. Not to mention the ESR values which give : all wrong , they look like randomly generated numbers , just right to write something . I have tested this tool in every function and I must say that everything it does it does very badly, I repeat it is a bad toy, money thrown away.

To appreciate the device it would be nice to look at the design and manufacturing cost...how much would it take to make it yourself ? And how do you build in the sweep in a design !

Please, what is the maximum current that the signal generator can withstand ?

I have ZEEWEII DSO1511G , for literally 60 euros I got oscilloscope that gave new way to see how circuits work. Not lab grade device but works great for beginner.

for christ sake , test the bandwidth, because spec may be false

I think the connectors on the top must be SMB.
And the component tester connector is ZIF (Zero Insertion Force) socket.

Can it measure high side driven mosfet?

I’m a little on the fence about the FNIRSI TC-3. An entry level Owon DS-2100 series scope meter is only slightly more expensive and includes a Cat III/IV meter and optional arb generator. I carry a DS-2102S in my tool bag. What has me on the fence is the TC-3 is just so darn cute and it has that cool component tester.

Great to see you also made a video about this device. 😀
I have a simple component tester and and use it a lot. The main disadvantage is that the cheap one i bought has no decent case and uses a separate 9 v battery. Some😢 days ago i was looking for a better one and decided to buy this nice device. It is more expensive as just a component tester however for the additional price it offers a lot of extra's (not mentoned in this video it also has an IRcode checker a temperature sensors etc.). Also it is around the same size as just a component tester so it will not use much space on my workbench. Hope it will arrive in a few days to test and use it myself.

That "funny little connector" resembles a SMB

Can it have a sig gen output while being in scope mode?

I already have a component tester. and AWG. So I just ordered a Zotek ZT-702S which is $60 and includes an actual 10mHz (Real Time Sampling Rate: 48MSa/s) scope and a 10,000 count TRMS DMM.

these little scope aren't just good for learning there brilliant at automotive work as well and many other jobs
i can't even remember how many jobs needed a compact unit to fit into a tight spot to check a signal
even if you have a 100mhz scope i recommend one of these mini ones.

According to ChatpGPT, it's pronounced "fuh-nir-see."

I have the tc-2. basically the same thing. As a beginner, im learning stuff still, and it is great for me

That's a cool little scope. Especially since it has a component tester which is a really handy thing to have. I suppose that other commenters may have a point about aliasing, but that is just something that beginners need to learn about. It's all part of the black magic wizardry :-)

In electronics school, we only had 20 MHz scopes for the most part. The lab had a single 100Mhz scope, but you had to get to class very early to get that seat.

I’m ordering one right now just based on the IR Decoder! Everyone I need one I end up breadboarding one which the of course gets disassembled a day before I need one again.

I wish you would teach a class, I enjoy your videos very much!

Fen-reesee is how everyone I know pronounces it

Nice toy for absolute beginner, but there are 40Mhz scopes for ~120€. Does much more than audio, for example traditional repair of electronics including switching power supply 😇

One thing I'd worry about with something like this is the issue of aliasing. Beginners especially (but even veterans) can get mighty confused by aliasing. I would imagine these ultra-cheap, slow DSOs would be especially prone to it. Whereas you don't have this problem with vintage CROs. I think Dave Jones still recommends a good, cheap, used CRO for beginners. What do you think?

Thanks!

You've got a scope, you can learn! 👍

I have the older model and i can’t mesure voltage ripple on a psu am i dowing it wrong or this scope can’t do it??

Just go to DiodeGoneWild and see how he pronounces it :)
Cool integrated instrument for field repairs unless you deal with high voltages. I'd be glad to have one or even two handy for out-of-lab situations like visiting someone to repair an amp. In the lab, however, I'll stick with my lovely big '80s Tektronix.
There are even Chinese scope probes that have the new-fangled little socket instead of the traditional BNC. I guess they were made with these little portable scopes in mind.

What I’ve seen of the Owon HDS line makes them look like this kind of omni-tool but like, actually usable for more than learning at about $200ish.

FNIRSI really need to get a pronounceable name.

Nice bro 😊