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Audio delay
Adjust the audio delay to synchronize picture and sound. Using
for example surround sound system the sound may be delayed
and thus needs compensation.
Digital audio
Select desired format, PCM or Dolby Digital.
Lock
Lock/Unlock
channels
Select Locks/Unlock channels. More details in next section.
Change PIN
Select Change PIN. More details in next section.
Settings
Select whether you want to hinder access to the Settings
menu by asking for the PIN code to open the menu.
Receiver
Select whether you want to hinder access to the set-top box by
asking for the PIN code every time you start the set-top box
from standby.

Lock/Unlock channels