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Using the Equipment
3.15.5.5
Functional Description
Ericsson encoders and receivers can utilize a unique audio technology called Phase
Aligned Audio. This utilizes multiple, synchronized, MPEG-1 Layer II audio channels
that can deliver surround sound channels plus additional audio services. A single
decoder synchronizes all the PAA components so that they remain aligned.
This Configuration Mode is only available to the RX8200 with the 4AUD license
enabled.
Phase Aligned Audio is indicated in the service PMT for each audio component
involved. Normally, the three-letter language code should be an ISO 639 Language
code, but in this case, a unique code is used to identify each of the PAA channels.
Table 3.35 PAA Channel Codes
Channel Configuration
Mode Assigned
PAA
Stereo Pair
Stereo Pair
Dual PAA
PAA mode is automatically selected by the RX8200 when the PAA descriptors are
detected in the selected decode service, it cannot be manually selected. The PAA
audio components will be assigned to the correct Audio Decoder as listed in the
table above despite their order in the PMT and will override any configuration
settings necessary. Audio decoders assigned for PAA whether it is 6 or 8 channel
will become read-only fields in the web-browser that cannot be changed by the user.
The remaining audio decoders are still available for decode as a Stereo Pair.
In PAA mode, the Decode > Advanced > Audio X: Mode setting is forced to
DECODE and the Decode > Advanced > Audio X: Routing setting is forced to
STEREO.
3-266
Audio Decoder
Audio 1
Audio 2
Audio 3
Audio 4
Audio 5
Audio 6
Audio 7
Audio 8
Audio 9
Audio 10
First Channel
Language Code
Channel 1: a,a,a
Channel 3: a,a,c
Channel 5: a,a,e
Channel 7: a,a,g
Channel 1: ISO 639
Channel 1: ISO 639
Channel 1: b,b,a
Channel 3: b,b,c
Channel 5: b,b,e
Channel 7: b,b,g
Second Channel
Language Code
Channel 2: a,a,b
Channel 4: a,a,d
Channel 6: a,a,f
Channel 8: a,a,h
Channel 2: ISO 639
Channel 2: ISO 639
Channel 2: b,b,b
Channel 4: b,b,d
Channel 6: b,b,f
Channel 8: b,b,h
EN/LZT 790 0005 R7A
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