Cisco D9054 Installation And Operation Manual page 68

Audio Menu,
Continued
Layer II, <ch1 to ch12>
Parameters:
Description:
Layer II, <ch1 to ch12>, Control
Parameters:
Description:
Layer II, <ch1 to ch12>, Input
Parameters:
Description:
Layer II, <ch1 to ch12>, Sample Rate
Parameters:
Description:
Layer II, <ch1, to ch12>, Bit Rate
Parameters:
Description:
4-14
Ch1 to Ch12.
Select the channel you want to set up. Layer II channels Ch2 and
Ch4 are only used in Single Mono mode, and in this case they
represent the right channels. In Single Mono mode channels Ch1,
and Ch3 represent the left mono channels.
In Stereo, Joint Stereo and Dual Channel mode, you only use
channels Ch1 and Ch3.
Note: The number of channels displayed depends on whether your
encoder is equipped with a Dual Channel Audio (DCA) card or a
Multiple Channel Audio (MCA) card. MCA cards provide six
configurable audio channels, allowing you to configure Ch 1
through Ch 12.
Enable, Disable.
Enable or disable the channel in question.
Digital, Embedded, Dolby-E Decoder.
The D9054 HD Encoder inputs the signal from the digital input
connector in the selected format. If you select Embedded the D9054
HD Encoder extracts the audio embedded in the active SDI video
signal of the program. The packet and pair is set in the GUI.
Note: Dolby-E Decoder input type is only available if the D9054
Encoder has a Multiple Channel Audio (MCA) card that is
equipped with a Dolby Advanced Sub-Module (DASM).
32000 Hz, 44100 Hz, 48000 Hz.
The sample rate of the input signal. It doesn't pay to increase the
encoding sample rate above that of the input sample rate.
For the lowest audio bit rates it's often recommendable to use the
lowest sample rate for best quality.
32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320 or 384 (kbit/s).
The bit rate must be ≤ 192 kbit/s if you set the Layer II mode to
Mono.
If you use Joint stereo it is recommended that you use bit rates up to
128 or 192 kbit/s. Joint Stereo with a bit rate of 256 or 384 kbit/s
reduces sound quality compared to stereo.
D9054 HDTV Encoder Intstallation and Operation Guide 4038938 Rev A