System Configuration : I/O Setup : Signal Path Routing for Audio Input

Signal Path Routing for Audio Input
The following example shows the signal path from the physical analog input of an HD OMNI audio interface, through the Pro Tools audio input path, to the Input of an audio track in the Pro Tools mixer:
 
Input signal path from an HD OMNI to the Pro Tools mixer as mapped in I/O Setup
(1) Physical Input
For Avid HD interfaces, such as the HD OMNI, the physical inputs that are available to Pro Tools are set on the Main page of the Hardware Setup (this selector is mirrored in the Input page of the I/O Setup).
*
For Pro Tools systems such as the Mbox Pro and the 003, physical inputs are fixed. For third-party and built-in hardware, in the Hardware Setup click the Launch Setup App button for available configuration options.
(2) Input Path
Main input paths and sub-paths are routed (patched) to physical inputs using cross-point matrix mapping in the I/O Setup. In this example, audio input is routed from HD OMNI physical inputs Analog 1–2 to Pro Tools Input channels A 1–2.
(3) Track Input
Input paths and sub-paths are routed to track inputs in the Pro Tools mixer by selecting the path (or sub-path) from the Track Input selector. In this example, input sub-path A1 is routed to the input of track “Audio 1.”