Edid.minder - Extron electronics DVI DA4 Plus User Manual

Operation
Front Panel Features
The front panels for the DVI DA4 Plus (upper panel) and the DVI DA6 Plus/DVI
DA8 Plus (lower panel) are shown below:
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Operation
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EDID Minder
When a DVI video source boots up it normally communicates with the output
device using the bidirectional Extended Display Identification Data (EDID)
communication protocol. The output device then produces a signal with a
resolution that is compatible with the output device.
The Extron EDID Minder feature maintains continuous EDID communication
with the attached source and ensures that the DVI source powers up correctly and
maintains a proper video output, even if the display is off or when a new monitor is
connected to the output.
When the distribution amplifier is powered on, it automatically scans all detectable
outputs, selects the device with the lowest native resolution and passes the EDID
information from that device to the input device.
While the distribution amplifier remains powered on, it monitors the Hot Plug
Detect (HPD) signal on each output and repeats the scan process every time a
display is connected or disconnected.
If all outputs displays are removed, the EDID provided is that of the last stored
display to which the distribution amplifier was connected. If no output device has
previously been connected to the unit, or the unit has been through a power cycle
with no displays attached, the EDID uses the factory default, reporting a native rate
of 1024 x 768.
3-2 DVI DA Plus Series • Operation
DVI DA PLUS
DVI DISTRIBUTION AMPLIFIER
LED indicator — This LED indicator illuminates amber when the unit is
receiving power but no input signal. When the unit detects an input signal,
the LED illuminates green.
Connect the captive screw connector from the supplied 12 VDC power supply
into the power receptacle on the rear panel. Do not power on the power
supply yet.
Connect the source device to the DVI input receptacle on the rear panel.
Run cables from the display device(s) and connect them to the DVI output
receptacles on the rear panel.
Power on the display device(s).
Power on the distribution amplifier. The LED will light amber to show that the
unit is receiving power.
Power on the input device.
DVI DA Plus SERIES
DVI DISTRIBUTION AMPLIFIER