Grass Valley PDR v.2.1 - Manual (Page 73)

Digital Audio Output
Profile Family 57
Digital Audio Output
You can change the names of the digital audio channels. Click Undo if you
want to cancel any changes. Click Help for context-sensitive Help on digital
audio output.
To change a channel name:
1. Expand Audio Output, and then click one of the Digital Channels to bring up
the Digital Audio Output dialog box (Figure 36). The channel numbers on
the left refer to the physical output connectors on the audio output box. Ch.
01 and Ch. 02 refer to the channel pair on the first connector, and Ch. 03 and
Ch. 04 refer to the pair on the second connector, and so forth.
Figure 36. Digital Audio Output dialog box
2. Click in the box of the output channel whose name you want to change. A
channel name can have up to 30 characters.
3. After you have changed the channel name or names, click Close.