Topfield TF 5810 PVRt User Manual page 25

Next, insert the viewing card into the slot on the front of the
CAM. To activate your subscription, you will need to follow
the instructions supplied with the CAM and viewing card.
When your card is activated, it will be used automatically by
your PVR, so that pay channels can be viewed just like any
others.
If you attempt to view a pay tv channel without a subscription
module, or with an invalid viewing card, a message will be
displayed, telling you that the channel is scrambled.
1.6 Pay TV 17