Grass Valley 8920DMX - Manual (Page 26)

26 8920DMX Instruction Manual
Functional Description
Functional Description
The 8920DMX is able to extract one existing audio group from the ancillary
data of a SD video stream by using the group’s ID. The group can then be
either passed or deleted from the SD output. Refer to the block diagram in
Figure 11 .
Figure 11. 8920DMX Block Diagram
Video Inputs
The serial input and deserializer are a standard chip set for receiving and
converting a serial digital video stream into a 10-bit parallel 601 digital
video signal.
Network Interface CPU
Audio
Out 2
Audio
Out 1
AES Output Stereo 1
AES Output Stereo 2
27 Mhz,
64 aFS,
128 aFS
Phase
Lock
Loop
Amplifier
& Equalizer
Serial
Digital
Video
Input
Clock
Ex.
Jumper
Control
Serial to
Parallel
Converter
Parallel
to Serial
Converter
Serial Digital & Audio
Output Driver
Serial
Digital
Outputs
FP
LED
Display
User
Setup
Switch
Logic
Rotary
Switch
DIP
Switches
Reset
Local/remote
FPGA
Audio &
Video
Clock
Synth.
DeMUX
Bus Control
2nd Function
Fault
Comm
Conf
Pwr
525 Mode
625 Mode
Audio G3 present
Audio G4 present
Audio G1 present
Audio G2 present
G4 delete
G3 delete
G2 delete
G1 delete
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