Operating the Equipment Locally
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 Authorization 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 headend systems. Its main functionality is:
• Over-air addressing of Receivers for authorization/de-authorization to decrypt
the transmission.
• Group operation for authorization/de-authorization.
• Periodic control word changes during transmission.
3.8.4 Director (Menu 4.3)
Director functionality includes Conditional Access, over-air software download and
over-air control.
No specific set-up is required in the Multi-Format Receiver 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 4.2)
There is a single slot on the Multi-Format Receiver front 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 Multi-Format Receiver for the DVB Conditional Access, however DVB
Common Interface functionality is only available if the RX1290/SWO/CI license has
been installed.
EN/LZT 790 0003/2 R1A
3-24
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