USE CASE | Fnirsi 1014D for testing amplifiers

Recently Richard from LER tested this scope concluding that it's perfectly usable. I must agree and I figured I'd demonstrate what things I use it for and what limitations bother me in it. Overall I fully recommend this scope to all beginners, especially since it's the only affordable scope that actually works.

[saiprasad]

Does this scope have AC DC coupling as in other scopes to block DC component ?

[paymonsani]

I find this information useful, thank you. How do I adjust the amplitude of the sinewave signal from the signal generator?

[nyarlathotep]

Thanks for the video pal. Very informative.

[HowardJohnstone]

The advantage this scope has is the easy adaptation of USB power block to make it fully floating. Now, the big and important issue in the audio world is Bode plots (Frequency measurements) using the built in generator. The FFT is very difficult to work out, no manual available, and a lot of "hidden" (non logic) setups for this to happen. Can you guide us through this?

[jacklamata]

Hi, Can you please, explain to me shortly how to connect the amplifier to test the watt power? Thanks

[uni-byte]

The Fnirsi 1014D does not have switchable DC/AC coupling on the input? Why? That's absolutely crazy. Even a cheap $30 scope has AC coupling.

I just checked the manual and it does have AC coupling. That would remove that 4V offset. You need to learn when to use that.

[thTek]

you have to explain first, floating ground, bridge configuration used into the amp output, thanks for a great effort !!

[soapboxearth]

Would this be adequate for a tube amp ?

[ojbeez]

How do you get it to generate a signal?

[jpvoodoo]

I don't understand. You are saying the problem is that the probe is grounded to the chassis of the scope. Isn't that how all scopes are?

[grzegorzlewandowski]

Bardzo pomocny materiał, pozdrowienia z Polski

[rizab]

Unfortunaly it isnt a video, how to use it for absolute beginners....

[audiovideoes]

Tam gdzie elektronika muszi byc Polak

[atlanko]

Nice toy for showing, not very suitable for work. Sensitivity 100mV, range 30Mhz, 200MSa. Pay extra and buy a Hantek - you can at least call it an oscilloscope.

[stevenbliss]

The FNIRSI 1014D is a heap of junk that does NOT come anywhere near it's claimed