D21m System
D21m Modules 6-23Date printed: 30.08.07
6.3.6 SDI I/O Card 1.949.442
The HD/SD SDI (serial digital interface) embedder/de-embedder card is able
to handle video signals according to the SD as well as the HD standard. It
can act as an eight-channel embedder, an eight-channel de-embedder, or as
a combination of the two. Therefore, for the Vi I/O system it may act as
an eight-channel audio input card, an eight-channel audio output card, or an
eight-channel input and output card. These three modes are determined by
hardware switches located on the card.
The SDI standard de nes up to 16 audio channels transmitted within a video
signal. These 16 channels are divided into four groups of four channels each.
The user can select which two groups are to be embedded or de-embedded
by hardware switches on the card: either groups 1&2, or groups 3&4. It is
also possible to clear the SDI data structure possibly present in the incoming
video signal and to allocate the groups from scratch.
The Vi SDI card hosts sampling frequency converters for both the audio
inputs (de-embedding) and outputs (embedding). So the mixing console can
run independent of the video sync used for SDI. The sampling frequency
converters can be bypassed. When bypassed, the SDI card is fully compatible
to transmitting the Dolby
®
E audio format.
This card works at a sampling frequency of 48 kHz only.
Modes 8-ch console output (embedder),
8-ch console input (de-embedder), or
8-ch console input and 8-ch console output (de-embedder/embedder)
Selectable SDI groups 1&2, or 3&4
Video connectors IN, OUT A, OUT B, THROUGH (BNC, 75 Ω)
Current consumption (5 V) 1 A
Operating temperature 0...40° C
SD/HD
In
PLL
48 kHz
8 x SFC
8 x SFC
Settings
Status
De-Embedder
Routing
&
8-Ch Delay
Embedder
TX
RX
Video
16
16
Master Clk
Audio In
1/2...7/8
Bypass
In Clk
Out Clk
Out Clk
In Clk
Bypass
Audio Out
1/2...7/8
Status
Clk
SDI
ID
Audio In
1/2...7/8
Audio Out
1/2...7/8
Slave Clk
Test Pattern
Generator
SD/HD
Thru
SD/HD
Out A
SD/HD
Out B
SDI Embedder/De-Embedder Module
Backplane Connector
Note: only available for the Local Rack.
