AMX Enova DGX 8 Instruction Manual page 76

Enova DGX HDMI Boards
Steps in the Content Protection Process
1.
The transmitter on the source device uses authentication protocol to verify that the HDMI input is
authorized to receive the protected content. (This is true regardless of how many destination devices
the source is being routed to.) The content is encrypted and transmitted.
2.
The Enova DGX Switcher verifies that the display devices are authorized to receive the protected
content (this is the part of the process in which renewability of the SRM (System Renewability
Message) list is verified; this verification of the display devices occurs inside the switcher). The
content is encrypted and transmitted.
3. The source device's transmitter periodically verifies that the HDMI input is still synchronized and
capable of decrypting the protected content.
4.
The Enova DGX Switcher periodically verifies that the display devices are still synced and capable
of decrypting the protected content.
Note: If the source does not support HDCP, the display device does not need to support HDCP. The
unencrypted content from the source is simply routed through the outputs to the display devices.
Supported Number of Sinks
HDCP Source Device
The number of sinks that the source device supports is not relevant when using Enova DGX Switcher
boards that support HDCP because the input connector on the board is the only sink that the source
device needs to authenticate.
Enova DGX Switcher
The HDMI outputs in an Enova DGX Switcher each support a maximum of 16 downstream devices
(repeaters and/or destination devices).
Unsuccessful Transmission in System
If an Enova DGX Switcher does not successfully transmit the protected content to any of the routed
sinks, it may indicate one of the following conditions:


* Key revocation is handled strictly by the Enova DGX Switcher. The source does not take any action
with respect to revoked keys.
Important: Keep in mind that a "failure condition" (in which HDCP authentication fails to occur) is
verified by the Enova DGX Switcher not the source device and will result in the image being a dark
red.
Note: Be aware that even when you are playing un-encrypted content on a Blu-Ray player, most
Blu-Ray players play all content as encrypted content. Normally the Enova DGX Switcher switches
non-encrypted content without problems if the display is non-HDCP compliant. However, when
encrypted content is sent from a Blu-Ray player to the Enova and is switched to an output board
(e.g., SC Optical Board) or a device that does not support HDCP, the content will not display and the
image will be red.
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Non-compliant device – The sink device is not HDCP compliant or has had its authentication
key revoked.*
HDMI output sink support limit exceeded – The output is actively routed to more than 16
downstream devices (display devices and/or repeaters) from a single output connector on an
Enova DGX Switcher.
Instruction Manual – Enova DGX 8/16/32 Digital Media Switchers