Grass Valley Imagestore 750 v.2.0.1 - Manual (Page 209)

Imagestore 750 User Manual RCP Operations
Miranda Technologies Inc. Page 209
The buttons grouped under the Transitions banner control the AB Mixer,
Key layers DSK1 and DSK2 and transition rates. Those along the bottom of
the panel marked Rate to Take mirror the signal path through Imagestore
750. Once a rate has been set use the Mixer button to set the background
video source then use DSK1 and DSK2 to insert stills, animations or live
inputs.
If DSK3 and DSK4 have also been enabled (Setup Menu, DSK34, 1234), then
these can be controlled in the same way as DSK1 and DSK2 to insert stills,
animations or live inputs. DSK3 and DSK4 are after DSK2 in the signal flow.
After the set-up is complete press the Take button to go to air.
Rate
Pressing the Rate button will index sequentially through the three setting of
slow, med and fast. As each option is selected it is illuminated.
To set the rates use the Video Menu button as described previously.
The rate (in frames) will only effect the trans (variable fade transitions)
selection of the AB Mixer and DSK buttons, as the cut command is an
instantaneous action.
Mixer
The AB Mixer is an integral 2 input video switcher, which provides the
background video source to the program keyers, DSK1, DSK2, DSK3 and
DSK4. The mixer can be configured for cut, trans (variable fade transitions)
or none (no option illuminated). Pressing the Mixer button will toggle
through the options.
Selecting the source
The Input router select buttons numbered Input 1-6 control the source into
the AB Mixer. The active source is identified with a brightly lit button whilst
the switched source is shown with a dimly lit button. The number of sources
available is dependant on the number of input cards fitted. To change the
switched source, select one of the unlit buttons. When the Take button is