DXLink Twisted Pair Input and Output Boards
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Enova Digital Media Switchers - Hardware Reference Manual
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).
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 Transmitter and 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, the DXLink Transmitters and Receivers 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 Input and Output boards.
System
Condition
Result/Required Action
Enova DGX 3200
Within power budget
The system will continue 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.)
