DXLink Twisted Pair 4K Input and Output Boards
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Enova Digital Media Switchers - Hardware Reference Manual
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).
NOTE:
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.
Power Budget Planning for Enova DGX 3200 with DXLink Boards
Before installing an Enova DGX 3200 Switcher and connecting any required DXLink Transmitters and Receivers, the power
draw for the system should be calculated in order to maintain the power redundancy of the power supplies in the
enclosure. (Each Enova DGX 3200 enclosure ships with two mutually-redundant power supplies.)
IMPORTANT:
If you do not want to draw power from the Enova DGX 3200 enclosure’s power supplies, you must power the
DXLink Receiver Modules with local power (must use the provided desktop power supply) or remote power (must be a
DXLink power injector). Local or remote power always overrides power from the switcher. If local or remote power is
turned off, DXLink Receiver Modules do not power down but immediately start drawing power from the switcher.
Power Budget Calculation
Calculating the power budget helps determine how many DXLink Transmitters and Receivers can be powered via the
Enova DGX 3200 Switcher while maintaining power redundancy if one of the power supplies should fail. The Enova DGX
Configuration Tool is used to determine the switcher’s power budget. Simply enter the types of boards and the number of
DXLink Transmitters and Receivers to be powered via the switcher, and the calculator shows the resulting power draw. The
Enova DGX Configuration Tool is located at www.amx.com/enova. If more DXLink units are required than the switcher
can support while maintaining redundancy, they must be powered using the provided desktop power supplies (which
must not be altered in any way) or a DXLink power injector; otherwise, damage may occur.
Foregoing Power Supply Redundancy
Depending on particular Enova DGX 3200 Switcher input and output board configurations, operating over the redundant
power supply level may be necessary on a permanent basis for some installations. While foregoing the benefits
associated with a redundant power supply should be understood, operating without redundancy is in no way detrimental
to the system, as long as both power supplies are operational. In this case, necessary power will be pulled evenly from
both supplies. However, the loss of one power supply will result in the system being non-operational from a normal "non-
redundant" system capability perspective.
In the Event of a Power Supply Failure
If an Enova DGX 3200 power supply fails, check the table below to determine which situation applies and any actions that
may be required:
NOTE:
The table above 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 4K Input and Output boards.
In both the situations in the table above, the power supply should be replaced as soon as possible to restore power
redundancy to the system or to allow the system to become fully operational again. Unless the Enova DGX 3200 has
exceeded its power budget, it should operate normally with a failed power supply. For power supply replacement
information, contact technical support.
Connecting Switching Systems with DXLink Connectors
Switching systems with DXLink Twisted Pair 4K support (e.g., an Enova DGX 800 Switcher and an Enova DGX 6400 switcher)
can be connected via their DXLink (RJ-45) ports.
IMPORTANT:
This section does not refer to the linking of enclosures from CPU to CPU, which is not supported in the Enova
DGX Switcher.
System
Condition
Result/Required Action
Enova DGX 3200
Within power budget The system continues to run; okay to leave it powered until the failed power supply is replaced.
Over power budget
The remaining power supply will turn off. If enough DXLink Transmitter or Receiver Modules are
removed (or otherwise powered) to bring the system’s power budget within its maximum limit,
the system will be able to run until the failed power supply is replaced. (You can also remove
some input and/or output boards.)
