1.3 What is common interface?
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displays the service information box. It is also used to display more information about a programme.
AUX switches the output of the TV SCART socket be- tween the digital receiver and the device connected to the VCR SCART socket. See § 3.2.2 for more details.
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screens.
GUIDE displays the electronic programme guide.
is used to set a sleep timer.
, P+ buttons switch to previous or next service. They are also used to navigate in menus and interactive
is used to select a subtitle track.
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20 P
switches between television services and radio ser- vices .
FAV displays the favourite lists.
mutes the sound. Press again to switch it back on.
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15 A/R changes aspect ratio. See § 3.2.3 for more details.
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SAT displays the satellite list.
1.3 What is common interface? 5
Some broadcasts are scrambled so that only paid subscribers can enjoy them. Scrambled services can only be viewed with a Conditional Access Module (CAM) and a subscription card belong- ing with the scrambling system.
Common Interface (CI) is the slot on a digitial receiver into which a conditional access module may be insterted. The front of the digital receiver has two common interfaces.
To watch a pay service, you should take the following steps: