Functional Description; Figure 1-1: 7735Avc-Lb Block Diagram - evertz 7700 Manual

7700 MultiFrame Manual
7735AVC-LB Video Composite Encoder and Audio DAC with SoftSwitch
1.1.

FUNCTIONAL DESCRIPTION

On the 7735AVC-LB, serial digital video is converted to parallel and the embedded audio is de-
multiplexed. The video is clocked into a line buffer which is then clocked out of the line buffer in time with
the reference timing. Audio is re-multiplexed and sent to two separate serial digital outputs. The video
also goes to the high quality composite encoder, where it is properly colour framed to the reference input
and then output on two separate BNCs. The de-multiplexed audio is converted to analog and delivered
out to the high density DB-15 connector on the rear of the card. The output timing and colour frame may
be offset from the reference through menu settings.
General-purpose inputs are used for remote control of some features and general-purpose outputs are
generated under error conditions.
SD Serial Input
270 Mb/s
Colour Black
Genlock Input
7735AVC-LB - 2
Audio
Audio
SoftSwitch™
Demux
De- Line Timing
Serializer Buffer
Key
Sync
Timing
Sync
Processing
Colour Frame
Timing
VBI
Decoders
To/From
SNMP
Network

Figure 1-1: 7735AVC-LB Block Diagram

Revision 1.6
Audio D/A
and
AES/EBU
Formatter
EDH
Audio
&
Mixer
Mux
Serializer
Fill
OSD 10 Bit
Composite
Memory
Encoder
CPU
Card
Video Audio
Edge
Present Present
Control
4 Channel Balanced
Analog Audio Out
AES Audio Out
GPI/O
Cable
Driver
with embedded Audio
Broadcast Quality
Composite Output
GPI/O
Module
Status
Serial Output
270 Mb/s
NTSC or PAL