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 169
High noise immunity (TRS error resilience) and glitchless processing (fast switching without freeze)
of input feeds, that were asynchronously switched on the recommended switching point (as defined
in SMPTE RP168)
User selectable Loss-of-Video modes: Black, Freeze, Pass, Mute
Video Frame Synchronizer with H,V Phase control and fixed frame delay on top of variable delay
Video Frame Delay: up to 16 Frames (all standards)
Video ProcAmp: Gain, Offset, Hue, Black/White Clip
SMPTE 352M Video Payload: Detection, Insertion (HD and 3G only)
EDH (SD) and CRC (HD): Detection, Insertion
Automatic ASI detection and bypass
Video Processing Notes
VANC/HANC data
other than embedded Audio is not processed. Closed Captioning data, Teletext
data or SMPTE 12M Timecode (LTC, VITC), for instance, will be dropped or repeated together with
the active video content, every time the Frame Synchronizer drops or repeats a frame.
VANC/HANC data for Delay mode channels
(including embedded Audio) is passed through the
delay memory unprocessed. Ancillary data remains untouched. The absolute delay from In to Out
can be changed arbitrarily within the predefined limits (e.g. from 3us up to 16 3us).
SMPTE 372M Dual-Link formats
supported, with 16 (mono) channels of Audio processed. Processed
Video/Audio data exits the board as a single 3Gb/s stream.
Non-PCM Audio data
(Dolby-E or Dolby-D) is not processed by the Audio Synchronizer / Audio Delay
/ Audio ProcAmp processing blocks. If it originated from 'embedded audio', it is passed alongside the
active video content through the Video Frame Synchronizer memory and a frame's worth of non-
PCM data is dropped or repeated - together with the active video content every time the Video
Frame Synchronizer drops or repeats a frame.
Quiet Audio Switching
Switching between two sources of the same data- and frame-rate in the serial domain, e.g. on a router’s
crosspoint board, can cause momentary discontinuities in the SDI stream. It doesn't matter whether the
two sources are asynchronous or not, a temporary glitch in the resulting SDI stream can cause
downstream equipment to generate an erroneous output.
The Output module can absorb such glitches and will provide not only a continuous and uninterrupted
stream of video, it will also handle the transitioning of embedded Audio from one source to another in a
‘quiet’ manner. In order to accomplish that, the following conditions must be met:
The two video sources, that get switched upstream, must be of the same data- and frame-rate. They
can be asynchronous with respect to each other and with respect to the reference signal that is
applied to the board.
The channel that is supposed to produce a clean and quiet output must be operated in Frame Sync
mode (Frame Sync license is required).
ADS Clean
must be turned on.
