Panasonic AJ-HPD2500P Operating Instructions Manual page 121

• When [SETTING] – [AUDIO CH] – [CH5-8] is set to NONE in the
menu, channels 5 to 8 are not output. When set to channels 5 to
8, channels 5 to 8 of the video event are output to the clip at the
destination of Edit Copy.
121
Editing: Creating New Clips from the Playlist (Edit Copy)