AMX Enova DGX 8 Instruction Manual page 75

Enova DGX Switchers meet the HDCP Standard, which was established to prevent the unauthorized
transfer of protected audiovisual content between devices. In addition, these switchers support
InstaGate Pro, which was developed to address the special concerns that arise when protected content
needs to be distributed.
The Enova DGX HDMI Boards route HDCP (content-protected) and non-HDCP digital audiovisual
signals. If HDCP is applied, the transmitted video is encrypted. The HDMI input connectors act as
HDCP receivers (RXs) for upstream devices, and the output connectors act as HDCP transmitters (TXs)
for downstream devices.
If the content is protected (HDCP), the Enova DGX Switcher functions as an InstaGate Pro sink and
through the HDMI (or DVI) output connectors handles verification of the connected individual
downstream sinks / destination devices (and downstream repeaters in the path if applicable). This means
that the source device only needs to authenticate the HDMI input. Once the authentication is complete,
the encrypted content begins to display on the destinations.
Note: Enova DGX Boards do not support CEC.
HDMI System Conditions
Normally, all devices used in an HDMI system are HDCP compliant. Each HDCP capable device has a
unique set of confidential keys (used to encrypt and decrypt the data).
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* In some cases, source devices will always enforce HDCP even if the content is not protected. In those
cases, when the source device sees that its output is connected to the input of the Enova DGX HDMI
board (or another HDCP compliant sink), the source device will always enforce and encrypt the HDMI
signal that it sends. If the system's equipment includes this type of source device, be aware that DGX
HDMI Boards will not be able to route that source device's signal to a non-HDCP compliant display or
through an SC Optical Output Board.
** If the connected downstream sink is not HDCP compliant, then the HDMI output will not send the
signal. This does not affect other outputs the source may be routed to. This allows compliant displays
to show content from source devices even if the source devices are switched to non-compliant displays.
Non-compliant outputs can easily be identified because they display a dark red image to indicate they
failed the authentication process.
The content protection process for the point-to-point connection between the upstream transmitter on
the source device and an HDMI input connector (which is an RX) on the Enova DGX Switcher through
an HDMI output connector (which is a TX) to the destination device includes four steps.
Instruction Manual – Enova DGX 8/16/32 Digital Media Switchers
Normally HDCP is used only when the source content is copyright protected.* Unprotected
content is not affected and may be routed as desired.
Each HDMI input can be routed to any number of outputs. The HDMI input (using
InstaGate Pro Technology) is the only sink that the source device is required to verify
(unless any repeaters are installed between the source device and the Enova DGX Switcher).
Each HDMI output goes through a verification process with its connected sink(s).** Each
HDMI output can support a maximum of 16 devices (repeaters and destination devices) with
seven levels, i.e., the number of times the signal goes through a repeater prior to going to the
sink. However, if the HDMI output goes into a device which is also utilizing InstaGate Pro,
then the process starts all over again and the Enova DGX Switcher only sees the input of that
InstaGate Pro device as the one sink that it needs to verify. So even though the number of
sinks each HDMI output on the switcher can handle is finite, the number of sinks can be
unlimited if using AMX devices that support InstaGate Pro Technology.
Enova DGX HDMI Boards
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