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2
Before Use the Device
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2.1 Operation Requirements
In order to ensure proper operation of LAVISION-868FTA, there are some requirements for other digital
TV and network devices, which will connect withLAVISION-868FTA. Please see below for details:
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2.1.1
Requirements for Digital TV Devices
The RF output signals of the devices, which will provide signal source to or receive signal from
LAVISION-868FTA should comply withDVB-S/S2 modulation standard, and the input frequency range is
from 950MHz to 2150MHz.. The device which will receive output signal from LAVISION-868FTA, should
comply with
the following standards:
Transport Stream (TS):
This means that the TS stream with one or more channels of digital TV, digital
audio broadcasting or any other digital TV services should comply with DVB standard; it must contain
PAT and PMT tables, which can completely describe the services.
The TS stream could be transmitted through ASI/Ethernet interface. For output IP interface, the TS
packets must be encapsulated into UDP datagram. Each output TS should have unique destination IP
address (unicast or multicast) and port number. The length of the UDP payload must be 7*188Byte (TS
packets), and the payload must be synchronized by sync byte 0x47.The TS stream (except the stream
with UDP format) also can be output from ASI interface, with standard format of 188 byte.
LAVISION-868FTA may be able to receive multiple transport streams from any devices with the TS
format complies with the above-mentioned format.
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2.1.2
Requirements for Network Devices
The switch used for the LAVISION-868FTAdata output and its destination devices (the IPQAM modulator
shown in figure 3)must be a Layer 3 gigabit switch, indispensability to support IGMP2.0. The backboard
exchange speed must be higher than 10Gbps; the maximum data exchange speed of each port must be
higher than 1000Mbps.
The switch for the LAVISION-868FTA and the managing workstation should be a 100M or gigabit switch,
the maximum data exchange speed of each port must be higher than 40Mbps. Normally, It can be the
same switch of data output,the two ports need to be configured to different VLANs.
Any hosts that may worsen the network traffic, such as some workstations or servers installed real-time
communication tools, streaming media server or WEB server, must not be located at the LAN switch of
the output of LAVISION-868FTA. These additional signals may cause packet loss, network jitter
worsening, and hence due to audio/video distortion at the audiences.
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2.2 System Requirements
Management workstation must have network connection and support TCP/IP protocol. Microsoft
Windows 2000/XP (or higher versions) and Internet Explorer 6.0 (or higher version) are the
recommended operating systems of the management workstation, and JavaScript must be supported by
the web browser.
