Crestron HD-DA-2-QUAD Specifications download pdf (Page 14)

Quad 1-to-2 HDMI™ Distribution Amplifier Crestron HD-DA-2-QUAD

Using Crestron Toolbox, the HD-DA-2-QUAD can test HDMI sources and displays

for limitations due to HDCP keys. The number of HDCP keys specify the number of

display devices that can be connected to a source over HDMI using HDCP

authentication. For more information, refer to the Crestron Toolbox help file.

EDID

EDID is a piece of data that HDMI receivers use to indicate their capabilities to the

HDMI sources.

The HD-DA-2-QUAD distributes HDMI signals from each input channel to two

corresponding HDMI outputs. According to the HDMI standard, HDMI sources are

expected to only deliver audio and video formats that are supported by the

destination. To do this, the HD-DA-2-QUAD reads the EDID information from

devices connected to the outputs and determines the video resolutions and audio

format to send to the input to program EDID on the inputs.

Using Crestron Toolbox’ DMTool utility, the HD-DA-2-QUAD is configured using

the “Best Common” algorithm to determine what EDID information is sent to each

source.

Best Common

DISPLAY 1 DISPLAY 2

DISPLAY 1

1920x1080p 60 Hz

1920x1080p 50 Hz

1920x1080p 24 Hz

1920x1080i 30 Hz

1920x1080i 25 Hz

1280x720p 60 Hz

1280x720p 50 Hz

720x576p 50 Hz

720x480p 60Hz

DISPLAY 2

1920x1080i 30 Hz

1920x1080i 25Hz

1400x1050p 60 Hz

1400x1050p 50Hz

1280x720p 60 Hz

1280x720p 50 Hz

1024x768 60 Hz

720x576p 50 Hz

720x480p 60Hz

BEST COMMON

1920x1080i 30 Hz

1920x1080i 25 Hz

1280x720p 60 Hz

1280x720p 50 Hz

720x576p 50 Hz

720x480p 60Hz

Only resolutions that are available in all of the displays that are connected will be

transmitted to the source. This ensures that any video signal coming in from the

source will be able to be shown on all displays. If certain resolutions are only

available on a subset of the displays, they will be omitted.

“Best Common” can be modified to use information from just a subset of displays by

deselecting them in Crestron Toolbox.

By managing which displays are used for the EDID calculations, you can maximize

the resolution of each source while ensuring that the source can be shown on each

display where it is needed.

The EDID calculations also affect audio formats. Each HDMI receiver sends its

supported audio formats to the source in the following format:

10 • Quad 1-to-2 HDMI™ Distribution Amplifier: HD-DA-2-QUAD Operations Guide – DOC. 6713B

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Crestron HD-DA-2-QUAD Specifications Page 14

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