Fair enough for the input clip level, but in the context of this diagram, I wanted to show levels as they appear on screen, so plain old dBV (or just dB as Elektron themselves use in the manual and on some controls), seemed better to me.
I did read & appreciate the numerous threads on this subject, including the Gain aGain thread, but as mentioned in the first post couldn’t find any diagrams… so as I’m a ‘pictures guy’, thought I’d have a go 
If I missed it, apologies
I got the impression you don’t have a signal generator as you mentioned using a hot eurorack signal to investigate clipping. I have a generator and scope so may be able to help if you need any tests doing.