Cobalt Digital Inc BBG-1022-2FS Product Manual page 16

1
De-Embed IN 1-16
(from Program
Video De-Embed)
AES
AES IN
Rx/SRC
Analog
AN-AUD
Audio
IN
ADC
1-12
An Input Audio Status display shows the presence and peak level of each
input audio channel received by the device. In addition to SDI embedded
audio channel sources, analog and coaxial AES inputs are available as input
audio choices. For AES audio inputs, payload is identified (PCM or data such
®
as Dolby
converters to align each input pair with video timing to accommodate cases
where AES audio is not synchronous with input video (SRC automatically
bypassed for non-PCM payloads). As such, the audio subsection provides a
full crosspoint between all supported audio inputs and output types.
The audio output crosspoint for each path's embedded output allows
embedded channel selection from the respective path's own channels, or
channels from the alternate processing path.
Input Routing
Routing/Gain/
Internal
Mute/Invert
Bus
Controls
Audio
Meters
Figure 1-3 Basic Audio Processing Block Diagram
selection to be changed from one source to another while ducking audio
during controlled input video switching transitions to provide silence between
input switches. The cross-fade is queued for the next available RP168 switch
line following the switch command.
Note: • Clean audio switching is assured only for intentional, controlled switches via
user control. Clean audio switching cannot be assured for failover switches.
• Clean switching requires that both SDI signals (switch from and switch to)
be stable and present, and of the same SDI format and rate.
• Clean audio switching function is designed for PCM audio. This function
does not assure clean decoded audio when switching from/to Dolby or other
non-PCM audio.
BBG-1022-2FS PRODUCT MANUAL
Digital or E). Each AES input pair has independent sample rate
Internal Bus Controls
Audio Dolby E
Alignment
Delay
Control
Offset
Control
Ref
Clean and Quiet Switching option
BBG-1022-2FS Functional Description
Output Routing
Embed 1-16
(to Program Video
Embed)
Routing/Gain/
Mute/Invert
Controls
Audio
Meters
Downmix
allows SDI input
+CQS
AES
AES OUT
Tx
Analog
AN-AUD
Audio
OUT
DAC
9902AUD V1.0LB89
BBG1022-2FS-OM (V1.3)