HE4000 Encoding System
Conditional Access
C onditional A ccess
B
B.0 Conditional Access Overview
Conditional access (CA) is a method for securing and scrambling transmission streams so that
only those decoders which are authorized to do so can receive the transmitted streams.
The HE4000 provides two methods for conditional access:
•
BISS – an industry-standard scheme which allows full conditional access operability
between various vendor’s DSNG equipment
•
PGCA – a ComtechTV proprietary scheme providing conditional access within the
ComtechTV family of products. Note: Not all software versions has the PGCA feature.
Please check with Customer Service for latest version of software that supports PGCA.
B.1 BISS Overview
BISS, the Basic Interoperable Scrambling System, is an industry-standard, conditional access
scheme used to secure and scramble DSNG broadcasts while allowing full inter-operability
between various vendor’s DSNG equipment.
The HE4000 currently supports BISS Mode 0, 1, and E scrambling. With Mode 1, all components
of the transmission stream are scrambled by a fixed control word (CW). The control word must be
manually entered into the encoder and decoder for BISS operations.
B.2 High-Level BISS Procedure
BISS is managed and enabled at an individual service level. To configure the HE4000 for BISS
operations, follow these steps:
1.
Select the BISS 1 or BISS E menu option.
2.
Enable BISS option.
3.
Enter the Scramble key (and ESW ID for BISS E).
B.3 Configuring BISS from the Front Panel
To configure the HE4000 for BISS 1 operations, follow these steps:
Selecting BISS 1 mode.
1.
From the main menu, select HE4000>Output>Encrypt>Biss 1.
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