Output Compatibility Correction - Extron electronics DA2 HD 4K User Manual

Output Compatibility Correction

EDID Minder manages the EDID that is stored at the HDMI input and presented to the source
device. However, additional functionality is required to ensure that all output devices remain
compatible with the signal from the source.
The DA HD 4K device scans and monitors the EDID of each sink device connected to each
output. It determines the interface (DVI or HDMI) and color depth and uses that information to
adjust the signal so that it is compatible with the output device. This occurs independently on
each HDMI output.
TMDS output format
The TMDS output format has three components:
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By default, the input format is automatically matched to the output format. If the input signal is
in HDMI format and the output device is DVI, the signal is converted to DVI (RGB color space,
8 bit color, no audio, no AVI, Infoframe, etc.) with a quantization range to match the input.
You can use SIS commands to force the
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Color depth and deep color support
If the incoming signal uses deep color but that is not supported by the sink device, use SIS
commands to truncate the color depth to one that is supported by the sink (see
Bit Depth
The options are:
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Updating
The DA HD 4K devices monitor HPD on each HDMI output to determine if a new sink has
been connected. If necessary, the signal for that output is modified in response to the EDID of
the connected device.
Video format — either DVI or HDMI
Color space — RGB, YCbCr 4:2:2, or YUV 4:4:4
Quantization range — either full (0-255) or limited (16-235)
Auto — signal passes through unaltered unless the sink is DVI
DVI — RGB 4:4:4; 0-255; no audio, no InfoFrames
HDMI RGB Full — RGB 4:4:4; 0-255
HDMI RGB Limited — RGB 4:4:4; 16-235
HDMI YUV 444 Limited — YUV 4:4:4; 16-235
HDMI YUV 422 Limited — YUV 4:2:2; 16-235
on page 21).
Automatic — by monitoring the EDID of the sink, the DA HD 4K device determines the
best color depth that is supported by the sink
Force 8‑bit
TMDS output format (see page 22):
DA HD 4K Series • Configuration
Video Color
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