[digital_S]

If he has the AER version ticked - it will record that if he deselects the SAT version.

Although it's "CAB" for me. (Freeview)

That's how I have mine set up - So BBC1, BBC2, ITV1 and C4 just use the analogue version!
That way, if I need to, (as these are the majority of programs that get recorded from), I can then still switch to another digital channel via the Aux (Freeview box), and VCR button. (IDTV) - It works for me anyway!