From top to bottom, the two main Switcher rows are labeled Program and Preview. Clicking a button in the Program or Preview row selects the active video source for that row (audio sources may or may not be affected by Switcher activity – see Chapter 15 Audio).
The number of sources available in NDI-enabled TriCasters is so extensive that sources are arranged in two banks. In this arrangement, each button does double duty, depending on which bank is currently being controlled.
Bank 1 is shown by default. Holding down Alt on the keyboard reveals Bank 2 (Figure 223). On releasing Alt, Bank 1 is re-displayed. It’s also possible to ‘latch’ Bank 2 if you like. Pressing the Tab key cycles the currently displayed bank.
Hint: The main Switcher (and M/Es with transition effects assigned) are able to show ‘selection hints’ beneath their rows when the active selection is in the opposite bank.
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