Black Box ACU5501A-R4 Operation General use, Video display Edid information, Hdmi 1.3a operation

ServSwitch Wizard DVI/USB SRX

4. Operation

4.1 General use

In use, the ServSwitch Wizard DVI/USB SRX modules should be transparent - the system and its peripherals should operate exactly as normal, the only difference being that they are now up to 196 feet (60 meters) apart.

4.2 Video display (EDID) information

Extended Display Identification Data (or EDID) is an industry standard scheme which allows video monitors to declare their capa- bilities to the computer’s video adapter circuitry, allowing the latter to optimise their outputs accordingly. Since the widespread adoption of the scheme, video adapters have become increasingly dependent on receiving relevant EDID information during start- up, before they will output anything more than a rudimentary video signal.

Each time that the remote module is powered on, it attempts to read the EDID information from the connected DVI video moni- tor. If the attempt is successful, the information is transferred to the local module and stored within non-volatile memory. This is information is then made available to the computer’s video adapter when required.

On dual-variants, EDID is handled independently for the two video connections, allowing completely different video display configurations on the two ports.

4.3 HDMI 1.3a operation

Using optional HDMI to DVI converter cables, the dual-variant ServSwitch Wizard DVI/USB SRX can support HDMI video and audio up to the 165MHz clock rate (1920 x 1080 at 60Hz, 24-bit colour).

Eight channels of HDMI audio are supported with sample sizes of 16, 20 or 24-bits at 32KHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, or 192kHz (simultaneously with the jack audio).

Note: The High-bandwidth Digital Content Protection (HDCP) and Consumer Electronics Control (CEC) schemes are not supported.

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