M-Audio Delta Audiophile 2496 Manual page 25

with both optical and coaxial S/PDIF inputs. These controls do not apply to the
Audiophile 2496.
DIGITAL OUTPUT FORMAT: Within the "Digital Output Format" group, you
choose the digital audio format of the S/PDIF output. The default setting,
"Consumer," is a true S/PDIF format and is recognized by all consumer devices.
The alternate "Professional" setting is an AES/EBU type data stream, but electrically
is S/PDIF. This can be used as an AES/EBU work-around that is recognized by
some but not all AES/EBU devices.
For both consumer and professional output formats, the "Advanced" checkbox will
allow you to force a few particular status bits in the outgoing S/PDIF signal. The
advanced option is for expert users only; however, if you find yourself in
configuration trouble, you can always select the "Restore Defaults" button to restore
the outgoing status bits to their factory settings. When "Consumer" and "Advanced"
are both selected, the group "Consumer Format Advanced Settings" will appear.
When "Professional" and "Advanced" are both selected, the group "Professional
Format Advanced Settings" will appear. These groups are described below:
Consumer Format Advanced Settings (Copy Mode): Copy protection, also known as
Serial Copy Management System (SCMS), is written into the S/PDIF status block, a
reserved part of the S/PDIF digital stream that is independent of the actual audio data
being transmitted. It can be used to inhibit the amount of copies that can be made, or
allow for unlimited copying. Three SCMS modes are available. "Original (Copy
Permitted)" indicates that the source material may be copied by a receiving device.
"1st Generation" indicates that the source material is a first generation or later copy.
Most devices that are capable of recording will reject material with this SCMS mode
set. The final option is "No SCMS" which may be used to override the other two
modes and allow a recording device to successfully record the audio data. Different
manufacturers' products may interpret these codes differently and require you to set
these bits by "trial-and-error" until proper operation is achieved.
Consumer Format Advanced Settings (Emphasis): This status bit is used to indicate if
pre-emphasis has been applied to the outgoing digital audio signal. The default is
"None" and rarely will any user want to set the value to "50/15uSec" unless the
transmitted audio has been encoded with 50/15uSec pre-emphasis.
Consumer Format Advanced Settings (Data Type): The user may assign the outgoing
data as audio or non-audio data. The default is "Audio." When sending AC-3 ("Dolby
Digital" 5.1 surround sound) via the Audiophile S/PDIF OUT port to an external
decoder, you should set the Data Type to "Non-Audio." Most AC-3 surround sound
decoders expect this setting and will reject the information if the Data Type is set to
"Audio."
Professional Format Advanced Settings (Data Type): The user may assign the outgoing
data as audio or non-audio data. The default is "Audio." It is possible to send AC-3
type signals out in the professional mode, although it is not usually done this way. If
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