Ref file for import into Rigol DS1054z

[Muggs]

Hello All,

Complete electronics noob here. At least when it comes to oscilloscopes.

I bought my DS1054z a week or so ago, and have been watching everything I can on YB (mostly EEVblog channel).
Anyway, what I can't find out for the life of me is how to import a ref file in. I tried making a sine way in excel and export out as CSV, but no joy. I can't even find a file online to import.
I do realize that importing a reference file that i have nothing to reference it to is a bit silly, but I'm just going though all of the buttons and this one has me stumped.

So... If anyone has an idea of why my CSV file (BTW, i renamed the extension .ref) won't load or has a ref file that they are willing to post, I would be most appreciative.

TIA,
Muggs