7800/7700 MultiFrame Manual
7812UDXD Series 3G/HD Up/Down/Cross Converter with Simultaneous Dual Format Outputs and AES I/O
Page - 34
Revision 1.1.1
6.3.1.7.
CDP Parser
The
CDP Parser
parameter displays the status of Closed Caption reading.
6.3.1.8.
CDP 708 Demux
The
CDP 708 Demux
parameter displays the status of 708 Closed Caption reading.
6.3.1.9.
Fiber TX Module Status
Fiber TX Module Status
reports if the module has detected the presence of a TX SFP module in the rear
plate on boot up.
6.3.1.10. Fiber RX Module Status
Fiber RX Module Status
reports if the module has detected the presence of a RX SFP module in the rear
plate on boot up.
6.3.2. Video Output Monitor
6.3.2.1.
Video Delay
Video Delay
reports video delay through the card in ms. There are two video delay monitors, one for
each output path.
6.4.
7812UDXD AUDIO ARCHITECTURE
All 7812UDXD series modules incorporate a similar audio architecture. Figure 6-3 depicts this
architecture. Internally, 16 channels of audio are processed within the module. These 16 channels of
audio are selected (on a pair-by-pair basis) to come from embedded audio inputs or discrete AES inputs.
As well, the 7812UDXD series modules have optional Dolby decoders capable of decoding Dolby AC3 or
E on any of the embedded audio channels or incoming AES. Once input audio channels are selected,
auto-sensing audio sample rate conversion and adjustable audio delay is applied. All advanced audio
processing steps, such as audio up-mixing, down-mixing and adjacent channel mono mixing, have
simultaneous access to all 16 channels of input audio.
Finally, sixteen independent Output Channel Mixers or 8 independent Output Channel Mixers for both
Dolby AC3 and Dolby E generate sixteen channels of output audio. These Output Channel Mixers perform
any required audio inversions, audio gain adjustments and audio channel swapping. 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. Once the desired adjustments have been made to the Audio Mixers these audio sources
can be selected on a channel pair basis with the Audio output mux allowing a selection of AES out or
encoded from either Dolby source. AES audio outputs and embedded audio outputs can carry different
audio.
