Installation and Setup
39
Instruction Manual – DXLink™ Twisted Pair Transmitters/Receiver
Important:
If you do not plan to draw power from the Enova DGX enclosure’s power supplies, you
must power the DXLink Transmitter and Receiver Modules with local power (desktop power supply) or
remote power (DXLink power injector), which always overrides power from the switcher. If that power
source is turned off, the DXLink Transmitters and Receivers will reboot and then start drawing power
from the switcher.
Power Budget Calculation
Calculating the power budget helps determine how many
DXLink Transmitters and Receivers can be powered
through the Enova DGX Digital Media 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 through the switcher, and the
calculator shows the resulting power draw. The
Enova
DGX
Configuration Tool
is at
www.amx.com/enova
.
If more DXLink units are required than the switcher can
support while maintaining redundancy, any DXLink Modules can be powered using the provided desktop
power supplies, PDXL-2 (FG1090-170), or PS-POE-AT-TC (FG423-84).
Important:
AMX does not support the use of any power supplies other than the provided ones or
power injectors other than the ones approved as they may potentially damage the DXLink equipment.
Foregoing Power Supply Redundancy
Depending on particular Enova DGX 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 power supply fails, check the following to determine which situation applies:
Enova DGX 8/16 within its power budget
– the system will continue to run; okay to leave it
powered until the failed power supply is replaced.
Enova DGX 8/16 over its power budget
– the system will continue to run; however, we do not
recommended leaving it powered until the failed power supply is replaced, unless enough
DXLink Transmitter or Receiver Modules are removed (or powered locally) to bring the
system’s power budget within its maximum limit. (Another option is to remove some of the
input and/or output boards.)
Enova DGX 32 within its power budget
– the system will continue to run; okay to leave it
powered until the failed power supply is replaced.
Enova DGX 32 over its power budget
– the remaining power supply will turn off. If enough
DXLink Transmitter or Receiver Modules are removed (or powered locally) 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.)
In all of the situations 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 Digital Media Switcher has exceeded its power budget, it should operate normally with a failed
power supply. For additional information on power supplies and power supply troubleshooting for an
Enova DGX Switcher, see the
Instruction Manual – Enova DGX 8/16/32 Digital Media Switchers
at
www.amx.com
. For power supply replacement information, contact technical support (see page 104).
