Nevion DWC-HD-DMUX - Manual (Page 5)

DWC-HD-DMUX Rev. F
nevion.com | 5
1
Product overview
The Flashlink DWC-HD-DMUX converts an HD-SDI input signal to an SD-SDI output signal
with user selectable aspect ratio.
Two digital outputs and a set of configurable analog video outputs are provided, all of which
can be set to output the SD signal or the re-clocked original HD signal.
For SD input the card will act as an SD frame synchronizer with an adjustable delay relative
to the sync signal. This frame synchronizer functionality is also present when down-
converting. The card is prepared to accept black & burst or a tri-level signal from the frame.
The DWC-HD-DMUX also has a de-glitcher to give error-free synchronous switching.
The audio embedded in the HD-SDI or SD-SDI stream is de-embedded and can be delayed
relative to video. Each audio channel can be swapped in an audio matrix before they are re-
embedded in the SD-SDI data output stream. For SD-SDI inputs it is possible to turn
embedding completely off and leave the SDI stream unaltered.
A selection of user parameters of the card can be controlled by switches on the board.
Complete control of all parameters is available by use of the Flashlink RS422 Control
Protocol Version 4, which is supported by the Gyda system controller from software release
2.13.
Figure 1: DWC-HD-DMUX-R block diagram
1.1 Product versions
DWC-HD HD down-converter. With 2XSDI out, SD/HD analog out, internal
audio handling, and frame synchronizer functionality.
DWC-HD-R HD down-converter. With high sensitivity 9/125µm single mode
optical input, 2XSDI out, SD/HD analog out, internal audio handling,
and frame synchronizer functionality.
DWC-HD-DMUX HD down-converter. With 2XSDI out, SD/HD analog out, internal
audio handling, analog stereo out, AES (or RS-422 data) out, and
frame synchronizer functionality.
DWC-HD-DMUX-R HD down-converter. With high sensitivity 9/125µm single mode
optical input, 2XSDI out, SD/HD analog out, internal audio handling,
analog stereo out, AES (or RS-422 data) out, and frame
synchronizer functionality.