by
laytox » Tue Aug 28, 2018 6:41 pm
So I figured I'd start a new thread since this issue seems unrelated to the previous ones. Anyone that's seen my previous threads, this is the same 6890N/5975C/CombiPAL system I inherited that had been sitting vented in the basement for 8 or so years (thanks to everyone that's helped me out the past year getting this thing up and running).
I've finally managed to get a good looking sample run completed, however in the tune history I've noticed this
Should I be concerned over that large drop in the ion focus value? Is this due to a dirty lens, or something else? For reference, I inherited this thing around the 95th tune mark.