There are a couple different kind of automatic awnings. Some have lateral arms so the awning goes straight out. I don't believe those can be pitched at all.
Others have side arms that can be adjusted. At one extreme they extend pretty much straight out, at the other extreme they dip down some, but not a lot. I'm virtually positive this is the kind that YC1 is talking about. I have that type, and this is it adjusted as low as it goes:
Pitching it down helps bring it down a bit, but the awning is still very high, and doesn't give a whole lot of shade unless the sun is directly overhead. I need a ladder to be able to reach the edge of it, even when it's as low as it goes -- it doesn't come down nearly as low as a manual awning. Note over the door there is a smaller awning, this is the lateral arm type that comes straight out.
Even with the slide extended, the main awning is usable. But of course, the slide does take up some of that precious space under the awning. With it adjusted down as it is, it does wrap over the top edge of the slide. This doesn't seem to have caused any issues over the years, but I still make sure I have the awning retracted before I move the slide.
The picture might be a little confusing. At the top outside corner of the slide is the roller for the slide topper awning. That's the fabric you see going straight back to the coach to the awning rail. The main awning fabric is wrapped over the edge, and due to the angle of the camera you can barely see the edge of the awning fabric. It's the thin line that extends to the half-circle aluminum tube that covers the awning when it's rolled up, and it ends at the very top edge of the coach roof.
The power awning is very convenient. But it does not give the same protection as a manual one. I've often been tempted to put a small manual awning on the slide itself so I can drop it down low for shade from a low-angle sun.