ARC System 2 - new doubts

Hi, guys,
finally, my Arc system 2 arrived and I'm excited to install it.  I read all I could about ARC there's in the forum but still have some doubts.  I have a real small room (2.2m x 2.2m) full of shelves on the walls; the desk (where all my stuff is: CPU, 2 video monitors between the speakers, the A-300 keyboard, etc.) is in one side of the room behind the wall and there's a bookshelf at the right of the listening point.  The room is small but I have a good space to my chair and to apply the triangular distance to the speakers.  My doubts are:
1) During the setup of the Arc system software do I leave the chair inside the room?
2) Where is the best place to stay positioned during the overall process of measurement?
 
Thanks a lot!
Ane Atsuko

I think that is correct. Leave the furniture as is... you need to move away from the seated position so ARC can properly read the room. One would think you would need to be seated there but apparently not.
 
It should tell you in the instructions.

wizard71
I'm pretty sure our very own Danny Danzi recently posted a link to his instructions to set ARC up correctly. Worth a search I'd say. I would find it myself but on phone with unreliable signal at the mo.

Bibs

Hi, Bibs,
I think I've read everything Danny's posted about ARC but didn't find anything about my doubts but Ptheisen and Guitarhacker already helped me a lot.
Thanks!

bluzdog
FWIW: If you want ARC to read the room as you will using it, why not sit in the chair while taking measurements? You could even try it both ways, save the results and see which works best.
 
Rocky

Got this off the web so not sure what 1/10 is referring to and have not used the above mentioned analyzer but don't understand what would be gained by not sitting in your chair. Unless the coefficients are so insignificant in relation to other materials as to be of no consequence.
 
Absorption coefficients
 

Guys,
thank you very much for the replies!  Tomorrow will be the big day!! 
Atsuko

wizard71,
That's exactly what I did, trying to eyeball the mic over the spot on the grid as accurately as possible. If there was nothing between me and the mic and the floor, it was pretty easy to do. If there was something, like the chair, in the way, I would look from two directions 90 degrees apart and a few feet away. I've heard of some people using a plumb bob, which could potentially be slightly more accurate. But the chair would get in the way of that for the close in spots too, so I figured I'd just be as consistent and accurate as possible by eye.
 
To make my grid, I cut up shiny return address stickers (everybody must have a few hundred of those lying around that they received unsolicited) into squares and stuck them to the floor according to my measurements. This made it pretty easy to visualize the vertical alignment.
 
It worked for me!

I did mine the same way except I used a plumb bob as I don't have a laser pointer.

I'd remove the chair from the room for ARC, just for convenience while moving the mic stand around. Unless you have one of those giant high-backed overstuffed leather executive office chairs, it won't have a significant effect compared to the room's contribution. (It will, however, skew your perception of some high frequencies, so a plain low-back office chair is preferable at the mix desk.)
 
Your own body is pretty absorbent and will have a greater influence than the chair, so it might seem to make sense to have it be part of the snapshot, but it really won't make that much difference. Your body does absorb sound, but because it's at the same location in the room as your ears it has little effect on how you perceive sound. You're more interested in the effect of objects far enough away to reflect significantly delayed sound waves: the floor, ceiling, walls, and large objects such as couches and bookshelves.