keys. After that you can move with the 
keys the cursor to the output, which source you want to change.After starting the L-Band Switch Matrix the Display shows the sources of the RF-outputs. At the bottom of the display you can see the summary state of the The L-Band Switch Matrix.
To change a source press one of the keys. After that you can move with the keys the cursor to the output, which source you want to change.
Then press 
. Now you can select which input should be switched to the selected output.
After choosing the input via the keys, press , for switching to the selected input.