Thank you for your reply,firstly re buying V 2/3/4 or whatever from Seeed seems to be a big chore,they have no stock of any Nano’ATM,even if the had,I don’t know if they could identify which version it was!
Mine “was” V3 with SD card loaded with BenF 3.64 etc and worked quite well ,with attenuater I read HT patterns in Auto ignition systems – but could not store or keep reference files that’s when I tried to get it to store files.The screen type I don’t remember but I did a lot of checking on this site - which is IMO a maze and hard to find my way around,I got here yesterday one way today by using the search engine ,weird!
To me 4 channel DSOs are overkill in motor diagnosis work, plus metal cases can be fatal in late 50kv ignition systems and for almost $200 for a Quad is overboard in my case. The latest Pico 2 channel are approx 80 pounds Sterling,peak voltage 100v. non auto ones can be used on cars with attenuaters as well,but are small and fast, but not a pocket size , need a laptop – and have good backing from the manufacturer .
Seeed leaves it to the users which I suppose that’s what is its reason for being sold,unfortunately its nice gadget,but it is in the realm of the clever few IMO.
Maybe Seeeds real interest is in Robots etc,shame really, Oh well I’ll check on a cheaper form of freight from USA,and think it over best wishes to all I then work out the pro’s and cons baz