Crestron HD-DA-2-QUAD Specifications download pdf (Page 6)

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

EDID Format Management

Embedded in the HDMI signal there is data called EDID (Extended Display

Identification Data), which is generated by a display or audio processor to inform the

upstream source about its format and resolution capabilities. In response to this data,

the source configures itself to send the best video resolution and audio format that

both devices can support. However, when splitting the source’s output to two

disparate devices, formatting conflicts may arise.

The HD-DA-2-QUAD overcomes formatting conflicts by determining the optimal

video resolution, frame rate, color depth, and audio format that all of the devices can

handle.

HDCP Key Management

By supporting HDCP, the HD-DA-2-QUAD ensures compatibility with all current

and future high-definition signals. HDCP (High-bandwidth Digital Content

Protection) is the digital rights management method that television and movie studios

use to protect their content from unauthorized duplication. To support HDCP

protected content, all devices in the chain must be HDCP compliant.

To manage the HDCP handshaking between devices, the source device (e.g., a

Blu-ray Disc™ player or HDTV receiver) issues “keys” to the devices downstream.

Every HDMI source device has a limit to how many downstream devices it can

support, determined by the number of HDCP keys it has available. But rarely is that

limit advertised or specified by the manufacturer or service provider, so connect too

many displays or processors and the source will simply stop outputting a signal

without warning.

To prevent such surprises, using Crestron Toolbox™ software, the HD-DA-2-QUAD

can test the HDCP limits of each HDMI source, allowing the installer to configure

the system around any limitations, or substitute a different component.

Sync Detect LEDs

To simplify operation and troubleshooting, the HD-DA-2-QUAD provides individual

sync detection LEDs on its front panel, providing a clear indication when a valid

digital signal is connected to any input.

2 • 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 6