Fnirsi DSO-153 Injector Waveform 

You love these little scopes. I would have learned so much knowledge early on if I'd had access to something like this as a teenager.

Hopefully Fnirsi will get feedback from good folks ( Like you ) buying and using these budget entry level oscilloscopes, and make changes. A novice like me would not catch this, but your experience and teaching skills will be useful for them improving their products. I'm very grateful for your videos and am learning very much from them !! Thank you, Old guy James

Excellent video, great info. Thanks for taking the time to share. Cheers

Yep, did not expect that, comparing the specs I was expecting the 153 to be far superior to the 152. I purchased the 153 over the 152 believing it to be much better for vehicle diagnostics over the 152. It would seem the Fnirsi have improved some of the specs but in that process have comprised (robbed) the performance of the unit in other areas such as the screen refresh rate

Nice to see that the update was easy and you didn't have to hold the buttons as suggested in the manual. Wonder if there is any improvement other than the locking down of the signal generator to 10k. In v.1.5 you could generate upto 22khz but not calibrated.

TheGibby3340-: thanks for touching some life’s, I am one of your student who is learning from your videos, may you be bless always

I don't expect much from a tiny scope as this, it's useful for simple go , no go tests and that's about its limits,

I wonder if there's a bug rendering out-of-screen data correctly? Try to get the full waveform on screen by selecting 20 or 50 volts per division. Also there's firmware version 1.6 available if you haven't updated yet. Anyways a bug report to Fnirsi is in order 😄

Thanks for your review! The error you showed is a negative verdict, throw this piece of junk in the trash and demand a refund

Still looking for a satisfactory low cost dual channel scope with graphing multimeter! I am in N E Thailand so I think there are low cost options here that have not made it back West. I will research further, and I would also add my thanks for such an interesting channel…

That's a surprise find. Thanks for the test report. I have a DSO153 with firmware version 1.5. FNIRSI has released version 1.6 on their website. Which firmware version is your scope.

One thing I'm wondering. On the DSO-152 the trigger level will only go up 1 division past the center line when the waveform base is set to the lowest division. Will the DSO-153 trigger level go up higher when the waveform base is on the lowest division?

disappointing DSO-153

Its all good if you can read live data from an expensive scanner. Most if not all obd2 scanners cant read fuel injector data. So really this information is useless to most people. JS

lets keep it real, they are both shit, its just which shitty scope is usable.....

After watching you explained this cheap little inexpensive oscilloscope for a while. You totally forget that it’s a cheap scope..