Attaching Hdmi Connectors; Executing A Test Switch For An Hdmi Board; Hdcp Support On Enova Dgx 4K60 Switchers - AMX Enova DGX 100 Series Hardware Reference Manual

Attaching HDMI Connectors

The HDMI connector has a center screw for locking capability.
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Refer to the specifications tables (page 83, page 84) for detailed cable requirements.
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Use a "Premium High Speed Certified" HDMI cable for any 4K50/4K60 format.
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Executing a Test Switch for an HDMI Board

We recommend becoming familiar with how HDMI switching works in an Enova DGX Switcher by reading the rest of this
chapter before executing a test switch. We also recommend executing a test switch to verify the system is working
correctly and then disconnecting the test switch before finishing the installation. For information on executing test
switches, see page 188.

HDCP Support on Enova DGX 4K60 Switchers

The Enova DGX 4K60 HDMI Boards provide true matrix switching for complete distribution any combination of computer
images and protected content. Enova DGX HDMI Boards support both HDCP 1.x encryption and HDCP 2.2 encryption
and thus are able to support both previous and current generations of encrypted content seamlessly multiplexed with
non-protected content. The system components work together to prevent the unauthorized transfer of protected
audiovisual content to non-HDCP devices, revoked devices, as well as restrict HDCP 2.2 Premium Content to only be
delivered to HDCP 2.2 authorized devices. Encrypted content is able to flow seamlessly from any input to any output as
long as all devices support the minimum required capabilities for the current content.
The 4K60 system supports both HDCP 1.x and 2.2 simple receivers and/or repeaters connected to the output side as
required by the HDCP 2.2 standard. Downstream Enova DGX enclosures connected (trunked) with 4K60 Boards in a Multi-
stage system behave as HDCP 2.2 repeaters and can be connected in systems with up to three stages without special
control code programming so long as each stage includes at most 1 cage with 4k60 trunked connections, i.e. the 4k60
output channel of one stage is connected to a 4k60 input channel of another stage. In this setup there is only one HDCP
repeater at each stage.
A more complicated multi-stage setup might include multiple repeaters (cages with 4K60 input cards or any other
repeaters). In this case, the upstream 4K60 Output Boards have to apply the HDCP 2.2 repeater topology limitations
summed across all outputs on that stage. Any of these complicated multi-stage design will need to create control code
that tracks HDCP 2.2 repeater topology limitations to prevent switching that results in switches across multiple repeaters at
any given stage in a combined set that exceeds the HDCP 2.2 specification repeater topology limitations, an event that
will cause the HDCP 2.2 compliant source device to block the signal at the source.
The 4K60 boards are different from previous Enova HDCP 1.x supporting boards (including DGX DVI, HDMI, DXLink Twisted
Pair, and DXLink Fiber 4K30 and 2K Boards) in two areas:
1.
With 4K60 HDCP 2.2 content, the revocation responsibility is retained with the source device as required by the
standard so systems without 4K30 or 2K IO cards are no longer required to update the system SRM on a periodic basis,
2.
Authentication failures are communicated only via the System Configuration Interface HDCP Lock symbol or
asynchronous ICSP messages. The dark red "Auth Failure" screen is no longer produced. 4K60 Output Boards blank all
video to black when a receiver device fails to authenticate.
Large systems should be designed to account for limitations that may exist in HDCP 2.2 devices. For example:
Not all sources support the maximum number of standard supported downstream devices. 4K60 HDMI Boards
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support the HDCP 2.2 standard's maximum device list of 32. However some sources will be unable to complete
authentication when presented with a full list. Avoid system routing that exceeds a source's capabilities or the
source, typically, will repeatedly cycle through attempting to authenticate while dropping video on each cycle.
Some legacy sources, satellite receivers for example, support only a single downstream device. To support this
type of source, use an HDCP 1.x-only supporting input board to connect the source to the system.
See the Loading and Saving EDIDs section on page 200 for details.
Not all sources eliminate the disruption of video when a downstream device is added or removed to the current
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path of a source device. While the HDCP 2.2 standard recommends the non-disruption of video content when
updating the active device list, it is not a requirement. 4K60 HDMI Boards implement the HDCP 2.2 recommended
behavior but this does not prevent a source from disrupting video. Typical interruptions are brief, but promulgate
to all routed output devices.
Some HDCP 2.2 source devices deliver all content as HDCP 2.2 Premium Content. With these sources, content
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routed to all HDCP 1.x supporting boards will be blocked.
Many HDCP 2.2 supporting sinks will also support HDCP 1.x. Connecting these devices a HDCP 1.x supporting
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boards will result in them never being delivered HDCP 2.2 Premium Content. HDCP 2.2 displays should always be
connected to the system with 4K60 HDMI Output cards.
NOTE: Enova DGX 4K60 Boards do not support CEC.
NOTE: HDCP 2.1 source devices are not supported.
Enova Digital Media Switchers - Hardware Reference Manual
4K60 HDMI Input & Output Boards
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