Grass Valley VM 3000 System Controllers v.7.4 - Manual (Page 519)

Control Panel Operation CP 3830
6−99 VM 3000 Installation and Operating Manual
4. Toggle the Right channel soft key to the desired mode:
D
NORMAL − Use right audio for this channel
RIGHT RIGHT (Right signal on Right channel)
D
MIX − Mix left and right on this channel
LEFT
RIGHT
RIGHT (Left + Right signals on Right channel)
D
REVERSE − Cross opposite channel signal over to this channel
LEFT
RIGHT (Left signal on Right channel)
5. Press TAKE.