Dolby Ac3 Encoder Mixer Tab; Figure 6-39: Dolby Ac3 Encoder Mixer Tab - evertz 7812UDXD Series Manual

7800/7700 MultiFrame Manual
7812UDXD Series 3G/HD Up/Down/Cross Converter with Simultaneous Dual Format Outputs and AES I/O

6.34. DOLBY AC3 ENCODER MIXER TAB

The 7812 series module can encode Dolby E with the Dolby E options installed. There can be more than
one Dolby E modules installed. The controls for each Dolby E encoder are identical. Since each Dolby E
Encoder Control tabs is identical, only Dolby Decoder B will be described.
As shown in Figure 5-6, there are sixteen individual Output Channel Mixers in 7812 series modules.
These Output Channel mixers perform audio inversion, audio gain adjustment and audio channel
swapping for each of the 16 output audio channels. Using the X and Y inputs of each Output Channel
Mixer an additional level of mono-mixing is also available for each channel of output audio. Embedded
audio and discrete AES audio outputs are driven with the same audio generated using these Output
Channel Mixers.
For the sake of brevity, only the Audio Proc Ch1-Ch4 control tab will be discussed in this manual. Control
radial buttons for Audio Proc Ch5-Ch8, Audio Proc Ch9-Ch12 and Audio Proc Ch13-16 are identical in
their operation. The controls for Channel 1 will be described in detail, as the controls for Channel 2,
Channel 3 and Channel 4 operate in an identical fashion.

Figure 6-39: Dolby AC3 Encoder Mixer Tab

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