Hi Dave,
I saw on Youtube your movies and are great. After that I thing you can be the one who can help me with my oscilloscope.
One year ago I bought a Tenma oscilloscope (model 72-8225, 40MHz) from Farnell. Till now it work very fine but the firmware has some glitches. So I decide to do an upgrade to the firmware, but I couldn't find anything about this over the internet, not even the company Tenma.
Thank you very much.
Best Regards,
ADi