Edid Management Feature - Gefen 2x2 HDMI Switcher User Manual

EDID MANAGEMENT FEATURE

EDID. What is it and what is it used for?
Under normal circumstances, an source device (digital and analog) will require
information about a connected device/display to assess what resolutions and features
are available. The source can then cater its output to send only resolutions and features
that are compatible with the attached device/display. This information is called EDID
(Extended Display Information Data) and a source device can only accept and read
one EDID from a connected device/display. Likewise, the source an only output one
resolution for use by a connected device/display.
Why is EDID so important with the 2x2 Switcher for HDMI?
The 2x2 Switcher for HDMI is complex piece of technology that replicates and switches
between multiple inputs and outputs. Each connected source device will require one
EDID to read. EDID management is carefully handled by 2x2 Switcher for HDMI to
provide a single EDID for each source to read.
What options do I have to manage the EDID in the 2x2 Switcher for HDMI?
First, it is important to note that each source device can only output one video/audio
signal type. This includes resolutions and timings. When multiple devices/displays are
used, such as with the 2x2 Switcher for HDMI, it is important to use devices/displays
that have similar or compatible resolutions/features. This will ensure that the single
video/audio signal produced by the source device is accepted by all of the connected
output devices/displays.
The user has the option, through a combination of DIP switch settings within the 2x2
Switcher for HDMI, to choose how the unit will manage the EDID from multiple HDMI
devices/displays. Therefore the user has some control over the resolutions/features
that the source devices will output. The 2x2 Switcher for HDMI has a multiple EDID
management modes that will control how the EDID information from multiple devices/
displays are combined, ignored, and routed.
How do I change EDID modes in the 2x2 Switcher for HDMI?
There is an bank of 8 DIP switches located on the main-baord inside of the 2x2
Switcher for HDMI. DIP switches 1, 2, 5, and 7 are used in different combinations to
manage the EDID modes.
TIP: EDID modes and IR code channels can also be managed via the RS-232 serial
communications port. For this to work, all DIP switches must be in the OFF position.
This is the factory default setting. If you wish to use this feature, please do not open
the unit. See page 9 and 10 for more information on the RS-232 serial communication
features.
To access these DIP switches it will be required to open the unit. To do this, remove all
screws on the underside and side of the unit. Remove all HEX screws on the rear panel.
This includes the screws above each HDMI port and on each side of the RS-232 serial
communications port. Carefully slide the unit apart.
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