Platinum™ IP3
Installation and Operation Manual
Frame Synchronizer and Demultiplexing Input Modules (PT-FSDMX-IBG/PT-FSDMXO-IBG, PT-FSDX8C1D-IBG, PT-FSDMX8O1D-IBG)
© 2016 Imagine Communications Corp.
Proprietary and Confidential.
September 2016 | Page 157
Word Length
The Word Length (x8) parameter can be set through the Audio section of the GUI to 16, 20, or 24 bits on
a per SDI channel basis. 20 bits is the default and is applicable when the video standard is SD-SDI
(525/625).
If the SD-SDI Video has extended Audio packets (which can apply to any of up to four groups of
embedded Audio), Audio data embedded in such group(s) should have a word length of 24 bits. When
the processed audio data word length is 20 bits (determined by parameter ‘Word Length' parameter),
the Audio Embedder cannot overwrite existing extended Audio packets. There are 2 options in this case:
Turn on ADS Clean prior to re-embedding new Audio data, to wipe out any existing Audio packets
(regular and extended).
Set the Word Length (x8) parameter for the SDI channel in question to match the word length of the
Audio data embedded in the incoming SDI stream.
The Word Length bits for processed Audio data are not auto-detected (based on the detected word
length of the embedded Audio data) and set. This is to allow the flexibility for users to steer the word
length of the re-embedded Audio data such that it matches the word length of Audio data that
originates from a different source (for example, Audio received via TDM).
Group Active Channels
Due to the absence of audio control packets in SD-SDI modes, there is no (easy) way for the Audio De-
embedder to figure out whether channels within any of the present groups are active or not. This is why
in SD-SDI modes, even if audio channels are active, their presence is reported as 'None/Unknown'. There
is not enough room in the control space to extend the number of choices in order to notify the user that
the information is not available because of the SD format.
Video Frame Synchronization
The frame synchronizer offers two modes of operation: Delay mode and Synchronizer (Sync) mode.
These modes can be chosen using the
Frame Sync Mode
parameter.
In Delay mode, the output video is synchronized to the input video.
In Sync mode, the output video is synchronized to the reference video. The reference standard you
can use depends on the output video standard you have set
Table 74:
Supported Reference and Output Video Standard Combinations in Sync Mode
Reference Standard
Output Video Standard
Reference Standard
Output Video Standard
525i 59.94
1080i 59.94
1080p 59.94
1080p 29.97
720p 59.94
525i 59.94
1080p 59.94 DL
1080i 60
1080p 30
1080i 60
1080p 60
1080p 30
720p 60
1080p 60 DL
