Push the setup button [ ]
Scroll down to [Rack] and push [Enter]
- Change Rack #:  should be highlighted.
- Push [Enter].
- Change Rack # by scrolling up and down, or using the number key pad, and push [Enter] to save changes. (Valid Rack #'s are 1-999)
Note:Changing the rack # does not change any of the control settings, for example patching and module type.
Changing rack number will help keep track of the proper config for backing it up the in [Setup] [Media/Backup]. Rack # shows up as part of the file name.