TANDBERG TT1260 用户手册

There is a slot on the rear panel to allow the insertion of a Conditional

Access (CA) card for the VideoGuard Director CA system.

With the appropriate configuration, the TT1260 fully descrambles Remote

Authorisation System (RAS) input transport stream. The ability to decrypt

all the components in any other transport stream is a function of the

specific CA system decryption.

With the appropriate configuration, the TT1260 fully descrambles the BISS

mode-1 or mode-E input transport stream. This system has been

developed by the European Broadcasting Union (EBU) as an open

scrambling system.
BISS has five main levels of operation: Mode 0, Mode 1, Mode 2, Mode 3

and Mode-E
BISS Mode 0 corresponds to no scrambling.
BISS Mode 1 operation uses a fixed value for the control word to

scramble the services in the transport stream from the Encoder. To

descramble the transmission, the TT1260 needs to have the matching

control word value.
BISS Mode E operation uses a fixed value for the control word to

scramble the services in the transport stream from the Encoder. To

descramble the transmission, the TT1260 needs to have the matching

control word value.
BISS Modes 2 and 3 are not supported at this release.

Inputs and outputs to the unit are taken via the rear panel. Figure 1.10

shows a typical Decoder rear panel.

 

Connector descriptions are given in Chapter 2, Installing the Equipment

and Chapter 5, Options.