Falcon DVB-ASI Output Module
MUX모듈로 부터 ATM 신호를 받아 2개의 ASI를 출력하는 장비
보조 ATM 입력
TS rate 1.5~160Mbps
• Redundant ATM input
• Automatic protection switching
• Full VPI/VCI range
• AAL1, AAL1 FEC and AAL5 support
• High performance adaptive clock recovery
• TS rates from 1.5 to 160 Mbps
• 2 ASI output signals
• 188- and 204 Byte TS-Packet size
• Generation of MPEG Reed-Solomon
• DVB-ASI Byte- and Packet mode
• Local CPU
• Local storage of configuration parameters
• Hot-Swap and Hot-Plug
The DVB-ASI output card converts a received ATM cell stream, either by the use of AAL1 (ATM
Adaptation Layer 1, CBR) or AAL5 (rtVBR) to a DVB ASI MPEG TS (SPTS or MPTS) with a
constant TS rate. The card receives the ATM cell stream on 2 high-speed serial links in parallel
supporting protection switching on ATM level. An automatic protection switching is performed in
case of a LOS (Loss of the ATM cell stream).
The TS rate of the received cell MPEG-TS is re-generated by the use of an adaptive clock
recovery (ACR) with an accuracy of 0.2 ppm and a maximum wander of 0.02 ppm/s. No PCR
restamping is performed, so that the card can be used without restrictions in SFN applications like
DVB-T or transporting TS without PCR (e.g. DVB-H).
According to the user configuration a MPEG Reed-Solomon can be added to each TS packet,
generating 204 Byte packet size. The MPEG TS is mapped to DVB-ASI using either ASI packet
or byte mode. The ASI signal is provided on two outputs. The card can be configured to drop the
ASI carrier signal in case of a receive failure to force a connected A-B switch to perform a switchover.
The card can be configured using the console port (RS232) or in combination with an installed
controller card via the 2 redundant Ethernet. All configuration parameters are stored locally and
non-volatile. The entire function of the module is controlled by the on-board CPU. The firmware is
stored in the on-board Flash memory.
The card supports hot-plug and hot-swap according to the Compact-PCI specification.