Rb-Vhema8 3G/Hd/Sd-Sdi Embedder, 8 Channel Analogue Inputs; System Block Diagram; Fig 3-1: Rb-Vhema8 Block Diagram - Sonifex Redbox RB-VHDMA8 User Handbook Manual

3 RB-VHEMA8 3G/HD/SD-SDI Embedder, 8 Channel
Analogue Inputs
The RB-VHEMA8 is an 8 channel analogue embedder contained in a single 19-inch rack
unit. The unit can selectively embed up to 8 analogue channels onto either of the two
output video paths which are sent to the re-clocked SDI outputs. It also has the capability
to allow audio groups to be deleted or passed through on each of the two video paths
prior to the embedding process.
The 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,
SD and HD standards from NTSC and PAL up to 1080p 60Hz.
There is independent level control for each analogue input channel, which can be adjusted
from -24dB through to +24dB in 0.5dB steps.
The analogue inputs have three full-scale gain settings which can be set via jumpers
situated inside the unit. Allowable settings are +12dBu, +18dBu and +24dBu for FSD. The
balanced and unbalanced input connections are paralleled, allowing one type to be used
per input.

System Block Diagram

SDI
SDI
Input
Receiver
EQ

Fig 3-1: RB-VHEMA8 Block Diagram

Redbox Embedder/De-embedder User Handbook
Audio Audio
Audio
Group Pass /
Embedder
Detect Delete
Audio
Audio
Pass /
Embedder
Delete
Channel
Routing
R B - V H E M A 8
SDI
SDI
Output 1
Transmitter
CD
SDI
SDI
Output 2
Transmitter
CD
4
Bank 1
ADCs
8 Channel
8
Level
Control
4
Bank 2
ADCs
3
Analogue
Inputs
Balanced
Unbalanced
15