Hantek 6022BE 20MHz USB DSO

[horo]

What are the criteria for choosing the right photo-MOS? Why was Panasonic AQY210EH chosen...
...
Edit: To clarify -- the reason why I want to use KAQV214S instead of AQY210EH is that my local supplier only has the latter in an SMD package, whereas the former also in a THT package.

Simple reason - I chose the Panasonic AQY210EH because it was available from my supplier without long delay.

[XantheFIN]

I am very amateur so excuse me.

I have had this oscilloscope now for some time but i need ask for pro's.



When i am measuring things and i see line its there and i press stop it might sometimes not stop there but it will refresh the stupid thing after a sec


What i am doing wrong? Or i start using OpenHantek software?

Update
OpenHantek wont work on my Win7 T60 thinkpad so i will be stuck with original software.