Extron electronics SW4 User Manual page 8

• Remote configuration and control — The switcher can be configured via an RS-232
or USB connection via SIS commands (see
Commands" in the "Remote Communication and Control" section).
• EDID Minder — A proprietary EDID (Extended Display Identification Data) management
process from Extron, the EDID Minder manages the EDID between a digital display
device and one or more input sources. By maintaining continuous EDID communication
with all sources, EDID Minder ensures that digital sources power up properly and
maintain their video output, whether or not they are actively connected to the digital
display device.
EDID modes — Either of the following EDID modes can be selected by SIS commands:
•
Automatic, in which the SW HDMI reads the EDID data when a display is connected
•
and stores the data in memory (default mode)
User-assigned, in which you can assign one of 46 factory-provided files of EDID
•
information to each input. Four undefined slots are also provided, to which you can
save the EDID of connected displays as additional EDID files. The assigned EDID does
not change if a different display device is connected. This mode is useful for trouble-
shooting purposes.
Each time power is applied to the output device or the display is replaced, the SW HDMI
either reads the EDID information from the display or reloads the user-assigned EDID
information. It then writes the information to non-volatile memory on the inputs. The
input devices can read this information as they reboot (see
"Operation" section for more information).
• Output compatibility correction — The SW HDMI monitors the EDID on the
connected output device to ensure it is compatible with the currently selected input
signal. The following corrections are made to the signal as necessary each time an input
is selected:
Interface format: If the connected output device is DVI and the selected source is
•
HDMI, the signal is reformatted for DVI. If the output device is an HDMI device, no
reformatting is necessary because HDMI is backwards compatible with DVI.
Video color bit depth: If the connected output device does not support the color
•
bit depth of the selected source signal, it is truncated to the next level down that is
supported; for example, 12-bit >10-bit > 8-bit. Bit depth truncation can be forced
via SIS commands to always downgrade to 8-bit, disabling deep color.
IR remote control (optional) — The hand-held IR 102 Remote Control can control
•
the SW HDMI via infrared signals that it sends to the switcher from a distance of up to
30 feet (9 m).
Front panel security lockout (executive mode) — To prevent unauthorized access to
•
the switchers, the front panel controls can be locked via the front panel buttons or SIS
commands (RS-232, USB, and IR control remain available).
Input cable equalization — Automatic input cable equalization compensates for signal
•
loss when long cable assemblies are used.
Power supply — An external 12 VDC, 1 A power supply with a 2-pole captive screw
•
connector accepts 100 to 240 VAC.
"Using Simple Instruction Set (SIS)
Modes" in the
"EDID
SW HDMI Series • Introduction 2