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1.3 What is common interface? 7
To watch a pay service, you should take the following steps:
1.
Purchase a conditional access module and a subscription
card for the pay service you want to watch.
2.
Insert the subscription card into the conditional access
module.
3.
Insert the conditional access module into a common in-
terface on the front of the digital receiver.
To view the information about
the module and subscription
card which is inserted into the
digital receiver, select the In-
formation
>
Common Interface
menu. You should see a screen
like the left figure.