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

Good product

Es un buen producto Si trae la punta con el swicht rojito

This small instrument is a great little toolbox, It does read inductance, capacitors and such, and shows useful data on small power MOSFETS. I tested all these against other instruments and it is good. To use as an Oscilloscope , it does what it does, but due to poor quality instruction manual I have to rate it only 3 stars. If one has good knowledge of Oscilloscopes already one can figure it out, with some difficulties. If no other knowledge already then the user has a problem. The use of the trigger and level adjustments is lacking. I found that the scope accuracy and the function generator all work fine, tested against a real lab quality instrument. The voltages accepted and those produced by the generator are only low voltage, up to 3.3 volts for the generator so one would need an amplifer for many usess. So far I am happy with the purchase.

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.

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

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.