With the CP750, Dolby Surround 7.1 is a decode mode rather than a format
(because the processor does not support configurable formats in the same way as
the CP650). Automation systems or theater management systems may need to be
upgraded in order to use the new Dolby Surround 7.1 decode mode cue through
ASCII control over serial or Ethernet connection. If an existing automation
system is to be used, then it is possible to work around this by setting digital
input 1 of the CP750 to default to Dolby Surround 7.1 when selected, then adding
cues in the show to change to 5.1 discrete mode where necessary.