25Selection “UAS 481” or “EXR 551”Transmission channelUse the buttons to select a free available transmission channel. A maximum of four transmissionchannels are available (1400, 1516, 1632 and 1748 MHz).Test connectionWhen you have set a free transmission channel, press the buttons to switch to the “Test connection”selection field and press the button. The receiver now tests whether a connection to the single-cablesystem can be established or not. As soon as the receiver has established a connection to the single-cablesystem, you will see the following display:FIRST INSTALLATION: Single-cable system (Manual)When the “UAS 481” single-cablefeed system is being used, it isessential that the LNB is set to“Wideband”!When the “EXR 551” single-cableswitching matrix is being used, itis essential that the LNB is set to“Universal”!If no connection to the single-cable system could be established, the following display appears:Check your settings and if necessary call for expert help.Press the button to acknowledge this display.Then press the button. You will be asked whetheryou wish to save the changes. Use the buttonsto select “Yes, save changes” and confirm by pressingthe button. Now press the ! (green) button.The receiver will automatically display the selection menu for the channel search. Continue by selectingthe item (Execute Channel search).