Instruction manual

Troubleshooting
100
Instruction Manual – DXLink™ Twisted Pair Transmitters/Receiver
Power Issues
Upon power up, the Power indicator LED on the front of the DXLink units illuminates solid green.
If the Power LEDs on any of the system’s equipment are not illuminated:
 Check the power cords or DXLink (RJ-45) connection if using power over the DXLink line.
 Check the power connections on the switcher if using power over the DXLink line.
 Check the power connections on the source and destination devices.
DXLink Power Delivery Issues
Unexpected power interruptions of DXLink Transmitters and Receivers may be caused by the Enova DGX Digital
Media Switcher being powered by single phase power. Connecting a ground wire to the DXLink unit’s chassis and a
common earthed ground (ideally, referenced to the switcher) will stop power interruptions. For information on when and
how to attach ground wires to DXLink units, see page 47.
Important Power Considerations for Enova DGX Systems
Local power – Local power (the desktop power supply) 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 Transmitters/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 (Transmitters/Receivers); see page 56.
Do not use the local DC power jack on the module (even if the local power adapter
is turned off).
Power Issues with Enova DGX Systems
In an Enova DGX System when multiple endpoints (Transmitters/Receivers) cycle their power and the DXLink
connection fails, check the following:
 Check to be sure that Transmitters/Receivers being powered by the local DC jack have power. (Local
power always takes precedence.)
 Check to be sure that Transmitters/Receivers intended to be powered via the DXLink line do not have a
DC jack plugged in (even if the local power adapter is turned off). This can cause inadvertent ground
loops that can negatively affect DXLink power sensing circuits.