Cisco Model D-PCG1000 PowerKEY CAS Gateway User Guide
749606 Rev D
Sending DHCT Configuration
6-41
Misc Settings Tab Configuration Options,
Continued
Volume Area
The fields in this section let you specify options for audio operation.
Audio Digital Output
This field lets you specify the kind of digital audio signal that the DHCT will
Audio Digital Output
This field lets you specify the kind of digital audio signal that the DHCT will
produce through the digital audio port. This field appears on this tab only if Audio:
Digital Output is disabled on the General Settings tab.
Select one of the following options:
•
Select one of the following options:
•
Dolby Digital™ passes the compressed Dolby Digital bit stream, exactly as
provided by the source.
•
Two Channel Only sends two channels of Pulse Code Modulation (PCM), an
uncompressed digital audio format used widely in consumer electronics since the
introduction of the compact disc. External digital decoders recognize this format
and reproduce the two-channel audio program.
For more information on audio digital output, refer to Operating Audio Outputs on the
Explorer
®
Audio Range
DHCT Technical Bulletin.
This field lets you specify the dynamic audio range for digital channels. This field
appears on this tab only if Audio: Range is disabled on the General Settings tab.
Select one of the following options:
•
Select one of the following options:
•
Narrow applies the highest level of audio compression to the sound. The volume
difference between soft and loud sounds is minimal; the sound level is almost
constant. Many subscribers prefer this setting for channel surfing and program
viewing because it minimizes the difference in volume level from channel to
channel or between programs and commercials.
•
Normal applies a moderate level of audio compression but still preserves a large
dynamic range. This level is suitable for most home theater installations. The
volume difference between soft and loud is similar to the levels typically used for
analog programming. In this mode, dialog levels may be noticeably quieter, and
loud noises will be noticeably louder.
•
Wide preserves the complete dynamic range of the source with no compression.
This setting provides the most significant difference between loud and quiet
sounds. This mode is useful only in installations with well-controlled background
noise and for viewers that prefer the widest possible dynamic range.
For more information on audio range, refer to Operating Audio Outputs on the
Explorer
®
DHCT Technical Bulletin.