27Perform a Channel searchUse the buttons to select (yes or no) whether you wish to start a channel search. It is not essential tostart a channel search; instead you can use the factory pre-programmed channels. However the channelsdo change from time to time (e.g. their frequencies change), which the receiver does not automaticallydetect, and can then be found only by performing a channel search.If you selected “No”, you can press the $ (green) button to skip directly to the next item of the firstinstallation.If you selected “Yes”, you can press the button to progress to the next selection item.Channel Search ModeUse the buttons to select whether you wish to search “free & encrypted”, “only free” or “encryptedonly” channels.The UFS 640si does not allow encrypted channels to be viewed, because no Common Interface isfi tted for insertion of the necessary CA modules and smart cards.Press the button to move to the next selection item.Network SearchIf you set the network search to “Off”, only the factory stored transponders of the satellites you previouslyselected will be scanned for new and as yet unlisted channels.If you set the network scan to “On”, the transponder network enables additional transponders that have notyet been stored to be located. They are then stored and searched for new channels in the same way as theexisting transponders.Press the $ (green) button to start the channel search, or if you set channel search to “Off” you are guidedstraight to the next item in the first installation process.When the search has been completed, you will see the following message (example):FIRST INSTALLATION: Channel search