Apple Logic Pro 9 (TDM Guide) - Manual (Page 10)

Note: You need to restart Logic Pro to activate the DAE.
• Global Bit Depth pop-up menu: Choose between 16-bit or 24-bit playback and recording.
Note: DAE does not allow the use of 16- and 24-bit files simultaneously.
• PT HD Type pop-up menu: Defines the number of tracks for your Pro Tools HD system.
Each menu item allows you to define the required number of tracks, based on the
number of Pro Tools HD DSPs that you want to use (and actually have) in your system.
• “TDM setup indicator” checkbox: Enables or disables the display of a small status window
that shows the current TDM process (inserting a TDM plug-in, for example).
• Pass Keyboard Events to Plug-ins pop-up menu: Computer keyboard events (keystrokes)
that are not used by a plug-in are passed on to Logic Pro. Under normal conditions,
this ensures that Logic Pro functions like Start and Stop will continue to work. If this
isn’t the case, use the options in this menu to specify certain computer keyboard
sections, which will be passed to the plug-in. All other computer keyboard events will
be received by Logic Pro.
10 Chapter 1 TDM Audio Hardware and Drivers