Platinum™ IP3
Installation and Operation Manual
PX-HSRMX-OBG Frame Sync and Mux Output Module
© 2016 Imagine Communications Corp.
Proprietary and Confidential.
September 2016 | Page 168
Audio Swap (on a per mono-channel basis, but based on a predefined list of Swaps)
Audio Test Tone Generator (Off, 400Hz, 2kHz, 4kHz)
Dolby-E Header alignment (for Dolby-E data received via TDM only)
Embedding 4 groups (16 mono channels) of Audio after the Frame/Audio Synchronizer.
Automatic Audio selection from video source (embedded audio) or associated 16 channels of Audio
received via TDM.
Audio TDM channels if present (i.e. routed from the Audio crosspoint) take precedence over
channels de-embedded from the video source.
Fixed mapping of Audio channels received via TDM and the eight SDI streams
(e.g. TDM1-16 -> SDI1, TDM17-32 -> SD).
Audio Processing Notes
De-embedding:
For De-embedding, audio must be embedded synchronously at a sample rate of
48kHz.
Embedded Dolby-E frames
must be properly aligned with the Video frame in order to be transferred
from the Frame Synchronizer’s input clock domain into the output clock domain. Proper alignment
(position of guard-band) is important since Dolby-E frames can be dropped or repeated alongside
the active video content.
TDMed Audio
All Audio channels received from the Audio crosspoint via TDM are assumed to have a
48kHz sample rate and locked to the same Video reference applied to the board.
Automatic Dolby-E header alignment
supported for Dolby-E data received via TDM, where Audio
data (PCM or non-PCM) is expected to be already synchronous to the reference applied to the
board. When receiving Dolby-E data via TDM, alignment with the actual Video data is unknown and
it is therefore important to have the Dolby- E data automatically re-aligned prior to muxing it back
into the SDI stream.
Sample Rate Conversion
is applied to both, de-embedded and Audio TDM data, but only if it is PCM.
The downstream clock for the SRCs will be locked to the applied Video reference. Non-PCM Audio
data (such as Dolby-E/D) cannot be sample rate converted.
If Non-PCM Audio originates from the ingested SDI channel ('embedded Audio'), it is transferred
from the input clock domain to the output clock domain by dropping or repeating a full frame of
non-PCM data, every time the Video Frame Synchronizer reaches its roll-over point.
If Non-PCM Audio is received via TDM, it is expected to be already in the output clock domain
and therefore the SRC in the TDM path gets automatically bypassed.
Video Processing
SD-SDI (270Mb/s) standards - 525, 625
HD-SDI (1.5Gb/s) standards - 720p50, 720p59, 720p60, 1080i50, 1080i59.94, 1080i60, 1080psF24,
1080psF23
HD-SDI (3Gb/s) standards – SMPTE425 Level A, SMPTE 372M Dual Link
Framesync mode or Delay mode
Freeze modes: Frame, Field1, Field2
