User`s manual

8. Advanced operation
Barco – iStudio – R5976569 – user's manual – revision 09 – March-2007
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8.4 Dual mode
Usually one HYDRA is connected to one projection module. Under certain circumstances it can also be useful to
connect one H
YDRA to two projection modules who share the display information. This is called dual mode. It can
be used if:
• digital projection devices with XGA resolution are used, please refer to section 5.3.4 Setup module
• not more than 28 video or RGB sources shall be displayed together on both projection modules
The setting dual mode causes the work area and display area to represent the size of 1024×384 pixels, which is
two times 512×384 pixels. This is the amount of pixels, which is internally processed for each of the projection
modules. In the overlay card an upscaling for each projection module to 1024×768 pixels takes place for graphi-
cal background data. Video input data is scaled as in normal mode.
If from the resolution list of the Module properties dialog box a setting supporting dual mode is selected
(please refer to section
5.3.4 Setup module), the display area and work area gets an aspect ratio of 8 × 3 which is 2
times 4 × 3. Take care, that Maintain aspect ratio from the Grid menu is checked to recognize how the work
and display area changes in dual mode, please refer to section
5.7.4 Maintain aspect ratio.
It is not possible to display a video module overlapping! A video object must completely be
displayed on one of both projection modules.
The figure below shows a typical layout for dual mode:
Figure 8-3
Work and display area in dual mode
Please refer to the HYDRA user’s manual for the hardware configuration of dual mode.