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.
