Microwave Radio Communications SCM4000, Техническое справочное руководство

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Theory of Operation 8-5 SCM4000 Technical Reference Manual
Figure 8-4: SCM4000 Modulator/Encoder Block Diagram
8.3.8 SCM4000 Demodulator/Decoder
The SCM4000 Demodulator/Decoder configuration contains
both a built-in MPEG Decoder and a Demodulator. This
configuration provides analog video and audio output access, as
one of the four data output channels, configured for your
individual requirements.
A simplified SCM4000 Demodulator/Decoder block diagram is
shown in
Figure 8-5 .
POWER SUPPLY
AC/DC
POWER
DISTRIBUTION COMMAND AND
CONTROL AND FRONT PANEL
SCM
MODULATOR
STATUS
DISPLAY KEYPAD
CONTROL
(RS232)
E1/T1
10/100
E1/T1
10/100 RS232/
485
SUM
ALARM
ASI
DS3/E3
MODULATOR
CORE BOARD
IMB
IF
OUT
ENCODER
STATUS
MPEG ENCODER
ASI
SMPTE AUDIO
IN
AUDIO
IN
POWER
IMB/
POWER
IF OUT
VIDEO
IN
VIDEO TS
ASI OUT
1 3
INTERFACE BOARD
MICROPROCESSOR
Figure 8-5: SCM4000 Demodulator/Decoder Block Diagram
POWER SUPPLY
AC/DC
POWER
DISTRIBUTION COMMAND AND
CONTROL AND FRONT PANEL
SCM
DEMODULATOR
STATUS
DISPLAY KEYPAD
CONTROL
(RS232)
E1/T1
10/100
E1/T1
10/100 RS232/
485
SUM
ALARM
ASI
DS3/E3
DEMODULATOR
CORE BOARD
IMB
IF IN
DECODER
STATUS
MPEG DECODER
ASI
SMPTE AUDIO
OUT
AUDIO
OUT
POWER
IMB/
POWER
IF IN
VIDEO
OUT
ASI IN
(TRANSPORT
STREAM)
1
3
INTERFACE BOARD
MICROPROCESSOR