The On-Air Switch page gives you the possibility to change sources for an output controlled by logic sources.

You can select three stereo audio sources, which can be switched by two logic sources.
On the left-hand side, you can see the audio sources of the On-Air switch. The black lines symbolize audio signal paths. There are two blue-colored signal switches, each with an associated logic sources.
To configure the On-Air switch, follow these steps:
button next to the Source 1L box, the Audio Sources window opens. Audio Sources window, select a source and click Assign. Alternatively, you can double-click on the source or drag it to the Source box. The source is now assigned to the On-Air switch. Sources 1R, 2L, 2R, 3L and 3R.OnAir Logic Function. To change the logic source, click
and select another logic source from the Logic Sources window.Source 1 and Source 2 has no default logic source and you have to select a logic source if Source 2 will be used. Click
and select another logic source from the Logic Sources window.
The main switch with its default logic source OnAir is already preconfigured in the SX2-System. To switch between Source 3 and Source 1 (or Source 2) follow these steps:
Hold to unlock button, then press the On Air button at the same time. The On Air button turns red. Source 3 is now selected.Source 1 (or Source 2), press and hold the Hold to unlock button, then press the Off Air button at the same time. The Off Air button turns green and the On Air button turns white. Source 1 is now selected.
In the On Air Switch Signal area, you can assign the On Air Switch Signal to the Selector List 1 and Selector List 2. You can find these lists on the Monitor Selector
view of the TFT/Touch Display.
The label and color for the corresponding TFT buttons can be changed in the TFT Key options area.