Download UDC-3G-XMUX4+ User manual

UDC-3G-XMUX4+
Rev. D
The sum products (L+R/2 and MS) are reduced in level by 6 dB to avoid any possibility of
clipping.
Audio gain
Audio gain can be set for each stereo pair going into the audio processing block. The gain
range is set to [+96dB, -96dB] with a gain step of 0.1dB.
Note that non-audio data is ignored and left unchanged by the gain function.
3.22 Audio embedder
Figure 33: Multicon GYDA view of the audio embedders
The audio embedder can be enabled per group in Multicon GYDA. When a group is
disabled the audio inside that group is removed.
When in SD mode, a 24 bit audio signal can be converted to 20 bit. This means that the 4
least significant bits are removed. The audio control package is left unchanged as the bit
range is still present. This setting is controlled from Multicon GYDA.
In SD mode the entire audio control package can also be switched on and off via Multicon
GYDA.
3.23 Ancillary packet transport
Several types of ancillary packets must be de-embedded before the format and standard
converter block and re-embedded in the selected output format. The transport of all
supported packages is enabled by default, but for each package type the user can force the
transport off by selecting the Disable option.
Figure 34: Multicon GYDA view of the ANC transport control
3.23.1 Time Code
Time Codes in the Ancillary space is transferred for any video standard or format
conversion.
ANC-LTC, ANC-VITC and D-VITC are supported. When no LTC or VITC is detected in
Ancillary Space of incoming stream, any detected D-VITC will be embedded in ANC-VITC.
For incoming 486i29 stream where drop frame compensation is enabled in the time code,
this compensation is maintained in outgoing stream. Time Code transfer can be disabled in
Multicon GYDA.
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