Rb-Vhcmd16 3G/Hd/Sd-Sdi Embedder & De-Embedder; 16 Channel Digital I/O; System Block Diagram; Fig 5-1: Rb-Vhcmd16 System Block Diagram - Sonifex Redbox RB-VHDMA8 User Handbook Manual

5 RB-VHCMD16 3G/HD/SD-SDI Embedder & De-Embedder

16 Channel Digital I/O

The RB-VHCMD16 is a 16 channel de-embedder and 16 channel embedder combined into
a single 19-inch rack unit. The unit can selectively de-embed any channel within any audio
group of an SDI video signal, to any of the digital outputs. After which, the video becomes
two independent paths where the audio groups can be selectively deleted or passed
through. The unit then embeds any of the digital input channels to available groups within
each of the two video paths, which are then sent to the re-clocked SDI outputs.
The de-embedding and embedding channel routing is controlled via the front panel
buttons and indicators. There is also LED indication for SDI input status and audio group
presence.
The unit can be remote controlled via Ethernet or serial port connections using the Sonifex
SCi software.
It has a triple rate SDI receiver with automatic input rate detection and equalisation along
with two re-clocked and individually buffered SDI outputs. It supports the full range of 3G,
HD and SD standards from NTSC and PAL up to 1080p 60Hz.
Each digital input is normally sample rate converted to 48kHz before embedding, so that
it is synchronous to the video input. Though sample rate conversion can be bypassed on a
per input basis allowing SMPTE-337M data to be embedded. All digital outputs are output
at 48kHz, synchronous to the video input.
There is independent level control for each digital input and output channel, which can be
adjusted from -24dB through to +24dB in 0.5dB steps.
The digital audio I/O connections are transformer-coupled balanced line interfaces and can
be configured through SCi to be either 75Ω (AES 3ID) or 110Ω (AES 3) impedance through
either a BNC or via the D-type connector. These connections are paralleled, allowing one
type to be used per input or output.

System Block Diagram

SDI
Input
EQ
Digital
4
Outputs
Bank 1
Digital Audio
Balanced
Transmitter
Bank 2
Digital Audio 4
Transmitter
4
Bank 3
Digital Audio
Transmitter
Unbalanced
Bank 4
4
Digital
Audio TX

Fig 5-1: RB-VHCMD16 System Block Diagram

Redbox Embedder/De-embedder User Handbook
Audio Audio
Group Detect Pass /Delete
SDI Audio Audio
Receiver De-embedder Pass /Delete
16
16 Channel
Channel
Routing
Level
Control
R B - V H C M D 1 6
Audio SDI
Embedder Transmitter
CD
Audio SDI
Embedder Transmitter
CD
4
Bank 1
Digital Audio
RX+SRC
Bank 2
4
Digital Audio
16
Channel 16
RX+SRC
Channel
Routing
Level
4
Bank 3
Control
Digital Audio
RX+SRC
Bank 4
4
Digital Audio
RX+SRC
5
SDI
Output 1
SDI
Output 2
Digital
Inputs
Balanced
Unbalanced
43