NSG 9000-6G - Harmonic Inc

Chapter 5 Conditional Access System (CAS)
Defining DVB Scrambling Parameters
2. In CAS Properties, open the Encryption Mode (DVB\PM) list and select either of the following:
DVB Scrambling - an encryption mode for the DVB protocol.
Privacy Mode Scrambling - an encryption mode developed by Motorola Inc.
3. To enable CAS, select the CAS Enable box.
The fields of the selected encryption mode are enabled.
5.3 Defining DVB Scrambling Parameters
Once you selected the DVB Scrambling mode, and enabled the CAS, move to the DVB
Settings section and do the following:
1. In CP Duration (Sec), enter the required value. By default it is 15 seconds. The Crypto
Period defines how often the NSG changes the control word (or "key") for encrypted
services. Valid values range between 1-6554.
2. In ECMG Failover Retries, define the number of times the NSG 9000 unit tries to establish
communication with the Entitlement Control Message Generator (ECMG) before issuing
the alarm ECMG Connection Failure.
3. In CA Descriptor Location, select a location in the PMT for the CA descriptor. The CA
descriptor may appear either in a service or elementary level or in both levels.
4. Open the DVB Scrambling Mode box and select either of the following:
Session based - the EIS is external and it issues an SCG for each service for which
encryption is required. When selected, the DVB Session based features are enabled.
Tier based - all services are scrambled with the same control word and ECM and
there is no external EIS. Once selected, the DVB Tier Based features are enabled.
© 2012 Harmonic Inc. 103 NSG 9000-6G, Version 2.7, Rev B