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Operating the Equipment Locally
Reference Guide: TT128x High Definition Professional Receiver/Decoder
Page 3-15
ST.RE.E10141.5
BISS (as specified in EBU Tech 3292 May 2002) is standard on all units. It
is not possible to have both DVB Common Interface and TANDBERG
Director options fitted on the same unit.
3.8.2 Basic Interoperable Scrambling System (BISS)
(Menu 4.4)
BISS Mode 1 is similar to RAS in that it uses a fixed control word to
encrypt the data in the transport stream. Unlike RAS, the scrambling
algorithm is non-proprietary, using the DVB Common Scrambling
Algorithm to allow interoperability with other manufacturers’
encoding/scrambling equipment.
3.8.3 Remote Authorisation System (RAS) (Menu 4.1)
RAS has two levels of operation: FIXED KEY MODE and DSNG KEY MODE.
FIXED KEY MODE has a fixed control word to encrypt the data in the
transport stream.
DSNG KEY MODE is used for fixed head-end systems. Its main functionality
is:
• Over-air addressing of Receivers for authorisation/de-authorisation to
decrypt the transmission.
• Group operation for authorisation/de-authorisation.
• Periodic control word changes during transmission.
3.8.4 TANDBERG Director (Menu 4.3)
There is a single slot on the IRD pack panel to allow the insertion of a
Smart Card for the TANDBERG Director system. Director functionality
includes Conditional Access, over-air software download and over-air
control.
Other than the insertion of the Smart Card, no specific set-up is required
at the IRD for the Conditional Access or software download. For over-air
control (NCP) see Chapter 4, Operating the Equipment Remotely.
3.8.5 DVB Common Interface (Menu 4.3)
There is a single slot on the IRD pack panel to allow the insertion of a DVB
Common Interface (CI) Conditional Access module (CAM) and related
conditional access card.
Other than the insertion of the CAM and Access card, no specific set-up is
required at the IRD for the DVB Conditional Access.