User guide

Conditional Access

The ECM generator is the device that encrypts the Control Word (CW) and

generates an ECM required by the Decoders in order to decode a scrambled

Service.

See Section D.9, Use of the Scrambling Control Group ID for further information.

Figure D.2 Conditional Access Scheme

Adding Conditional Access functionality requires the following steps:

MX8400 Multiplexer

ECM

Generator

Ethernet Hub

Scrambled Transport Streams

Also carries EMMs and ECMs

IP OUT

EMM

Generator

dd Ethernet

hub if more

than one CA

system is used

Set up ECMG and

EMMG using nCC

(see Section D.3)

Set up Multiplexer Static

Parameters using nCC

(see Section D.3)

1. In nCompass Control:

a Add and connect up an Ethernet Hub (if required) – this is the same as

connecting any other device.

b Add an ECM Generator

c Add an EMM Generator

2. Define all CA Static Parameters (see Annex C, Static Parameters).

D.3 CA Status Monitoring

Any Simulcrypt error message generated by the MX8400 generally includes

additional information within the error information field to help with fault analysis.

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