user manual

28 DX-700 • User’s Guide • Rev 02
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About the DX-700
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The DX-700 has three video processing delay modes:
• Minimum Delay Mode
Use this mode when you require the absolute minimum delay, and you are willing
to forego some quality. The mode is very good for content that contains low
details. Please note:
~ Delay: 2ms for interlaced sources and 2ms for progressive sources.
~ Image Quality: There is a slight loss in quality compared to the
Reduced and Standard delay modes.
~ Functionality: The DX-700 processes only one input field of video
versus two input fields (that compose a full frame). One field is still
greater than the resolution of the LED wall, and all pixels on the wall are
functioning.
• Reduced Delay Mode
Use this recommended mode for most applications. This mode creates no
processing artifacts and is best suited for live events. Please note
~ Delay: 23ms for interlaced sources and 2ms for progressive sources.
~ Image Quality: This mode provides the highest and best image quality.
~ Functionality: The DX-700 processes both input fields using Barco’s
proprietary scaling technology, thus producing the best image quality.
• Standard Delay Mode
Use this mode for very large LED walls. Please note:
~ Delay: 80ms for interlaced sources and 40-60ms for progressive
sources.
~ Image Quality: This mode also provides the highest and best image
quality, identical to the
Reduced Delay Mode.
~ Functionality: The DX-700 processes both input fields using Barco’s
proprietary scaling technology, thus producing the best image quality.
Please note the following important points:
• To select the delay mode via the DX-700 front panel, you must first “pre-select”
the desired mode on the
Reduced/Minimum Delay Menu. This menu is
accessed via the
Expert Menu under the DX-700 Management Menu. Once the
mode is selected, you must use the
Setup Wizard to activate the selected mode.
• To select the delay mode via Director Toolset, use the Synchronization Section
on the
Configuration Menu.
• All delay modes are set up on a “per bank” basis. This means that one bank can
be set to
Standard, while another can be set to Reduced. If you are using the
DX-700 front panel for setup, the “pre-selection” and
Setup Wizard must be used
to apply (or change) modes for any bank.
• On a particular output module, If you set output 1 to the minimum or reduced
delay mode, the remaining outputs default to standard mode. However, if you
group outputs, the assigned delay mode applies to the entire group.
In Chapter 4, refer to the “
Pre-selecting the Delay Mode” section on page 159 for
instructions on setting and changing the delay mode. In Appendix A, refer to the “
Delay
Specifications” section on page 178 for delay specifications at 50 Hz and 60 Hz.