Grass Valley PDR v.2.2 - Manual (Page 85)

Analog Audio Input
Profile Family 67
to the first connector, and Ch. 02 refers to the second connector, and so forth.
Figure 38. Analog Audio Input dialog box, Main tab
2. Click the Main tab, if it is not already visible.
3. Click in the box of the input channel whose name you want to change. A
channel name can have up to 30 characters.
4. After you have changed the channel names, click Close or another tab.