13
LOCAL AND VIRTUAL DDC MODES
EDID MODES
Display information, or EDID, is needed by most sources to determine the
capabilities of an attached display. This is provided by the EDID of an attached
display. The DVI 3500HD uses one of two methods to read and transmit an EDID
to the DVI source device.
Local Mode
The local display output on the DVI 3500HD sender unit is the primary source for
an EDID. Whenever this port has a display attached, its EDID will be transmitted
to the DVI source device. It is critical that the display attached at the remote
location, on the DVI 3500HD receiver unit, have the ability to accept the timings
and resolutions listed in the local monitors EDID.
Virtual DDC Mode
When there is no local display attached to the DVI 3500HD sender unit, the
Virtual DDC mode will automatically be used. In this mode, an EDID is recorded
into the DVI 3500HD sender unit and transmitted to the DVI source device.
Please follow the instructions below for EDID recording.
These instructions assume that the EDID from the remote display is being used
for recording into the DVI 3500HD sender unit.
1. Ensure that no cables or power supplies are plugged into either the DVI
3500HD sender or receiver unit.
2. Bring the DVI 3500HD sender unit to the display at the remote location.
3. Connect the display to the local display output.
4. Power on the display.
5. Connect one of the included 12V DC power supplies to the DVI 3500HD
sender unit.
6. Using a small pin, push the EDID PRGM. button located on the front panel
of the DVI 3500HD sender unit. The Self-EDID LED will blink rapidly for
approximately 8 second while the EDID is being recorded. Once the EDID is
recorded, the LED will turn off.
7. Disconnect the display and power from the DVI 3500HD sender unit and
proceed to install the units at their proper locations.
