Enova DGX DXLink™ Twisted Pair Boards
89
Hardware Reference Manual – Enova DGX 100 Series Digital Media Switchers
Functions of DXLink Transmitters and Receivers
The diagram in FIG. 45 shows the functions of DXLink Transmitters and Receivers and the example descriptions contain the device
HDCP key count when used in conjunction with DXLink Boards in an Enova DGX Digital Media Switcher.
Important Power Considerations for Enova DGX 3200 Endpoint Systems
NOTE: This section does not apply to the Enova DGX 800/1600/6400 because the system is capable of providing power for the
maximum number of DXLink Transmitters and Receivers required when the enclosure contains all DXLink Twisted Pair Input and
Output boards.
In an endpoint system, the Enova DGX Switcher has DXLink Transmitters and/or Receivers attached. The Transmitters and
Receivers can be powered either locally, remotely, or via the switcher (the last two ways are considered DXLink power since power
is received via the DXLink line).
Local power – Local power on a DXLink Transmitter or Receiver always takes precedence over power via the DXLink line
from the switcher. However, if a locally powered Module is connected to a switcher and the local power is lost
(i.e., unplugged or turned off), the Module will power down and then automatically power back up using power from the
switcher via the DXLink connection (increasing the overall power draw on the switcher). When local power is restored, it
automatically replaces the power over the DXLink line.
DXLink power – When DXLink Transmitters or Receivers are being powered by an Enova DGX DXLink board or DXLink power
injector* (using power via the DXLink line), to maintain the switcher’s power redundancy, we recommend that you:
Determine the power budget based on the input/output boards used and the quantity of powered endpoints (DXLink
Modules and Wallplates); see the following page.
Do not use the local DC power jack on the Module (even if the local power adapter is off).
* AMX supports the use of DXLink power injector PDXL-2 (FG1090-170) and PS-POE-AT-TC (FG423-84); other power injectors may
potentially damage the DXLink equipment.
IMPORTANT: If local power is used for the DXLink Modules, it must come from the provided desktop power supplies, which must not
be altered in any way.
FIG. 45 Repeater and source functions of Transmitters and Receivers (A and B also apply to TX wallplate models)
Acts like sink
Destination
Destination
Destination
Source
Source
Source
Example C
Example B
Example A
HDMI cable
HDMI
cable
HDMI
cable
HDMI
cable
HDMI
cable
HDMI cable
RX acts like a sink
TX acts like a sink
TX acts like a sink
RX acts like a sink
Enova DGX
Enova DGX
Enova DGX
HDMI In
DXLink Out
DXLink In
DXLink In
DXLink Out
HDMI Out
Twisted Pair cable
Twisted Pair cable
Twisted Pair cable
Twisted Pair cable
Example A: When a Receiver acts like a source, its key does not count. Source device sees 1 key (Transmitter).
Example B: When a Transmitter acts like a sink, the source device sees 1 key (Transmitter).
Example C: When a source device is connected directly to a switcher, the source sees 1 key (switcher input).
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