Grass Valley DD35 Family v.3.1.5 - Manual (Page 39)

2. Panel Operation DD35 Production Switcher
2 – 5 Operating Instructions – Rev. 16 / 10.2001
2.2.1 FUNCTION OF THE BUSES
Background A The Background A bus indicates which background picture is currently selected.
Pressing another button in this bus performs a hard cut to another background pic-
ture. The selected background picture can be viewed on the corresponding M/E
program monitor.
Background Preset B The Background Preset B bus serves to select the background picture involved
in the next transition. The preset background picture and the selected modifications
(keys, for example) can be viewed on the corresponding M/E preview monitor.
The background and preset buses operate in “Flip-Flop” mode. After completion
of the background transition, the preset source is automatically selected on the
background bus and the original background source is automatically “flipped” to the
preset bus.
The background and preset bus can be changed from the “international mode”
(preset bus below) to “preset upper” mode (background bus below). For further in-
formation please refer to the Installation menu.
Key1 / Key2 Buses The Key Buses are for the selection and indication of key and fill signals.
Cut
BGD BGD
B A
Key Key
1 2
Layer
For details on key source control please refer to the sections Keyer Panels and
Transition Panel.
2nd Delegation The 2nd button allows for the selection of further sources (up to 48) in addition to
the 24 (32) directly selectable sources. The 2nd button will light when pressed. The
current button assignment can be read from the respective button display.
If the optional Input Mnemonics is not installed, source identification on adhesive
foil is suggested.
3rd Delegation The 3rd button allows for the selection of further sources (up to 62) in addition to
the 24 (32) directly selectable sources. The 3rd button will light when pressed. The
current button assignment can be read from the respective button display.
If the optional Input Mnemonics is not installed, source identification on adhesive
foil is suggested.
On Air Buses involved in the output picture are indicated with a red On Air to the right of
the bus.