User`s manual

8. Advanced operation
Barco – iStudio – R5976569 – user's manual – revision 09 – March-2007
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8-7
8.3 Redundant operation
If operating two or more HYDRAS, special hard- and software configurations can be made to avoid a loss of source
control in case that one display fails. Therefore a special hardware configuration is required, which allows to
insert the output of each H
YDRA to the overlay input card of the other HYDRA, where it can be used as background.
Please refer to the H
YDRA user’s manual for the explicit hardware configuration.
Within normal operation the output of the H
YDRAS is displayed quite normally directly on the projection modules
and each H
YDRA can display a layout that covers the whole display area. The input on the overlay cards is not
used. In case of a fail of a projection module, on both H
YDRAS it must be switched to specially prepared layouts.
These layouts must consider the area used by the other layout, so that the whole display area is only used, if
combining them. This enables to display the sources of both H
YDRAS on one display even if the area per source is
of course less than before. The figure below shows two redundant layouts that can be combined without loss of
information:
Figure 8-1
Two associated layouts for redundant operation
The layouts require furthermore that Enabled internal overlay in the Layout properties dialog box is checked,
see section
5.4.2 Setup layout please. This enables, that the output of one HYDRA is used a background for the other
H
YDRA. Hereby both layouts and their sources can be displayed on the remaining display. Nevertheless any
changes to the layouts and source administration must be done on the H
YDRA, where the sources are connected.
Figure 8-2
Overlaying layouts