목록검색 제목검색 내용검색 전체검색

Falcon Quad ASI Output Module 두 개의 Newtwork Interface 모듈로 부터 받은 ATM 신호를 4개의 ASI 로 출력하는 장비 ATM 신호에 문제 발생시 자동 보호 스위칭기능 작동 RS-232 컨트롤  Features • 4 independent ASI output signals (without APS) • Redundant ATM input possible for each TS • Automatic Protection Switching (APS) configurable • Full VPI/VCI range • AAL1, AAL1 FEC support • High performance adaptive clock recovery • TS rates from 1.5 to 160 Mbps • 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 Application The DVB-ASI output card converts received ATM cell streams by the use of AAL1 (ATM Adaptation Layer 1, CBR) to 4x DVB ASI MPEG TS (SPTS or MPTS) with constant TS rate. The 4 outputs can be used for 4 independent MPEG TS or for 2 outputs with automatic protection switching (APS). The card can receive the ATM cell streams 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 configuration between 4 MPEGTS or 2 with protection switching is done via software configuration. The TS rates of the received cell MPEG-TS are re-generated by the use of adaptive clock recoveries (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 an 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 monitor output can be configured by software to provide one of the four ASI signal. 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 switch-over. 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.