Cobalt Digital COMPASS 9034 Input Processing Analog to Digital Video - Manual (Page 51)

9034-OM (V4.1) 9034 PRODUCT MANUAL 3-11
Operating Instructions
9034 Function Submenu List and Descriptions
Audio Input Controls
Controls the AES Audio Input features for the eight AES
pairs, and displays signal status for received AES pairs.
Also provides global unity routing/parameter control
resets.
Note: Also refer to AES Audio Input Advanced Features (p.
1-14) in Chapter 1, “Introduction” for detailed
information regarding these functions.
• AES SRC Individual SRC Disable control for each AES pair (1 thru 8) disables or
enables Sample Rate Conversion (SRC) bypass as follows:
• Disabled On: In this mode, AES SRC for the corresponding AES
pair is bypassed (button pressed in). SRC is set to Disabled
(bypass turned on) by default. This mode is preferred where the
AES rate matches the input video rate. This mode is necessary
when embedding non-PCM AES audio such a Dolby
® E or Dolby
Digital™ audio streams.
Note: In this mode AES rate must match the input video rate or
audio dropouts will occur.
Note: AES audio must be nominally 48 kHz.
• Disable Off: In this mode, AES SRC for the corresponding AES
input pair is enabled (button in out position). SRC enabled allows
the 9034 to interface with asynchronous AES sources (sources in
which the AES timing does not match the video reference timing).
SRC can be used to compensate for minor clock rate differences in
the AES stream and the input video stream.
• AES Passthrough Individual AES Passthrough On/Off control for each AES pair (1 thru 8)
disables or enables Passthrough as follows:
• Off: Disables AES passthrough for the selected AES input pair.
Passthrough is set to Off by default.
• On: Passthrough is turned on, with the corresponding AES output
pair to act as a bit-for-bit copy with zero delay of the corresponding
AES input pair.
Note: AES Passthrough set to On overrides normal audio routing.
Gain and polarity control is not available when AES
passthrough is enabled.
• AES Zero Delay Embedding Individual AES Zero-Delay Embedding On/Off control for each AES pair
(1 thru 8) disables or enables Zero-Delay Embedding as follows:
• Off: Disables Zero-Delay Embedding for the selected AES input
pair. Zero-delay embedding is set to Off by default.
• On: The selected pair directly embeds into its corresponding group
(AES Pair 1 embeds into embedded channels 1 and 2; AES pair 2
embeds into embedded channels 3 and 4, and so on) with the
normal frame sync audio delay being bypassed.
Note: Zero Delay Embedding overrides the standard audio routing
system. For example, if AES Pair 1 is selected, then the
controls to route into embedded channels 1 and 2 will not
apply. Gain and polarity control is not available when
zero-delay embedding is enabled.
Table 3-2 9034 Function Submenu List — continued
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