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Description:

    Scrambler Crypton COD910ASI is designed for a joint operation with DVB-multiplexer and DVB-modulator.     Multiprogrammed transport stream, containing up to 32 TV-programs could be fed to the input of COD910ASI.     Up to 16 programs can be encoded by Conditional Access System Crypton. The encoded digital TV- programs can be grouped to the service packets that use the same scrambling key and have a common list of subscribers. There are up to 8 service packets available.     Subscriber service independently for each service packet addresses up to 256.000 of subscribers at the continuous 16,000,000-address space of Conditional Access System "Crypton".     Control and status monitoring of COD910ASI are performed by the operator's personal computer running "Crypton DTV Master" software. Communication media between server and computer is a regular TCP/IP network (100 BaseTX, UTP5 cable, RJ45, active network equipment). There is no restriction in the quantity of network equipment.     Typical applications of COD910ASI are head-end stations of digital cable, MITRIS, MMDS- and LMDS- networks.

Scope:

• Digital ASI input and output. As input data by ASI interface COD910ASI receives a pre-generated and appropriately multiplexed DVB-stream. Such a solution allows minimizing the initial signal quality loss and reducing the transition parts quantity. The signal at the output of COD910ASI could be fed to the channel modulator supporting ASI interface.
  
• Up to 32 digital TV and radio programs. Input stream could be consisted of many programs. Up to 16 TV- and radio -programs could be selected during the system’s configuration. These programs are subject to be integrated into the packets and then be scrambled. The remaining programs (if there are any) would pass to the output of COD910ASI without being changed.
  
• Up to 8 service packets. Programs are packetized in arbitrary order by aid of new feature provided in COD910ASI. Any quantity of digital programs could be inserted into each packet. Different packets are scrambled with various dynamic keys.
  
• DVB-compatible scrambler. The scrambler is a realization of Common Scrambler Algorithm, described in DVB-CAS ETR-289 specification.
  
• TCP/IP network. Connection between COD910ASI and operator's control computer is done via regular TCP/IP network equipment.
  
• Reliable software. "Crypton DTV Master" software package allows controlling and monitoring the status of network devices in real time.

Design:

    The COD910ASI – is in a compact Multipac design with built-in power supply. Easily assembled into 19" rack. Dimensions: height – 2U (89mm), depth – 295 mm, width – 483 mm. Technical characteristics of COD910ASI:

Inputs
DVB ASI (in accordance with EN50083-9)	Quantity: 1 multiplexed input (32 programs maximum) Type: electric Rate: Up to 54 Mbps on each input Connector: BNC
Conditional Access	Built-in DVB-compatible scrambler Conditional Access System: "Crypton" complies with ETR-289, DVB Simulcrypt Maximum quantity of service packs being scrambled: 8 Maximum quantity of programs being scrambled: 16
Outputs
DVB ASI (in accordance with EN50083-9)	Quantity: 1 Type: electrical Output stream rate: 54 Mbps Connector: BNC
Control and monitoring
Remote	Ethernet (TCP/IP) Software: "Crypton DTV Master"
Physical characteristics
Size Dimensions	2U(19") 93mm х 482,6mm х 336mm 3.65" х 19" x 13.25"
Weight	3,9 kg
Power	90-260V AC 50/60 Hz Power consumption: 45 Watt max
Environmental conditions
Operation	Temperature: 0 °С - +45 °С Humidity: 5% - 85% (non-condensing)
Storage and transportation	Temperature: -40 °С - +70 °С Humidity: 0% - 85% (non-condensing)

Functional block diagram COD910ASI:
Block diagram concise description:

• ASI receiver. A special-purpose ASI signal receiver is used to convert input stream arriving at ASI interface into internal parallel interface.
  
• DVB Scrambler. The scrambler used in COD910ASI is a DVB-compatible and complies with DVB-CAS ETR-289 specification. It produces a selective scrambling of digital TV- programs. The main purpose of scrambling is to exclude the TV- programs unauthorized viewing.
  
• Service information generator. Service Information Generator performs control messages insertion, so the receiver may decide what to do with the selected TV-channel.
  
• Control module. The Control Module is used for the following operational tasks: subscribers control, service packets generation, status information collection and so on.
  
• ASI Transmitter. Special-purpose ASI signal receiver is used to convert output stream from internal parallel interface into ASI.
  

User manual Scrambler Crypton COD910ASI