Grass Valley 1200 Operation Manual - Manual (Page 54)

3-8
Section 3 — Controls & Menus
Aux Bus 1 and Aux Bus 2
The single row of Aux bus crosspoint pushbuttons controls two
separate auxiliary crosspoint buses, Aux bus 1 and Aux bus 2. The
Bus Delegate buttons control delegation of the aux row to control
Aux bus 1 or Aux bus 2. After delegating the Aux row to the
desired Aux bus, selecting a crosspoint in the Aux row causes the
corresponding Aux 1 or Aux 2 bus output to cut to new video.
When one of the Effects Send buttons is selected, the Bus Delegate
buttons turn off, and both aux buses become dedicated to the
Effects Send signals. The Aux buses then serve as the return input
path for preprocessed switcher video and key signals that have
been looped through an external digital picture manipulator
before entering the keyer. The switcher automatically selects the
correct aux crosspoints according to the Effects Send crosspoint
map assigned in the configuration menu.
Satellite Aux Bus Panels
When an optional Model 1200 or Model 200 Satellite Aux Bus
Panel is connected to a switcher serial port and enabled in setup,
the satellite panel has direct control over the aux buses. To select
an aux crosspoint on the Satellite Panel, delegate an aux bus by
selecting [AUX 1] or [AUX 2] and then select a Satellite Panel
[CROSSPOINT]
. Eighteen of the available Satellite crosspoints are
assigned to the same video, key, black, and background inputs as
the other switcher buses. The remaining crosspoints can have
mattes assigned.