Appendix G - Ground Wire Attachment
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Hardware Reference Manual – DXLink™ Twisted Pair Transmitters/Receiver
Appendix G - Ground Wire Attachment
Applicability
This appendix covers attaching a ground wire to a DXLink Module without a designated ground location. If the module has a
designated ground screw, see page 37.
If the system is experiencing problems with delivery of DXLink signals to/from an Enova DGX Digital Media Switcher or Enova DVX
Solution, adding a ground wire from the TX/RX to the switcher may improve performance. The problem is likely caused by the use
of a single phase powered system that does not provide an earth ground for a source or destination's chassis and shields. This can
inject unnecessary AC voltage on the HDMI cable shield that can lead to DXLink signal integrity issues. To check for indications of
this type of power in the system, look for a two pronged plug or a cord that has only two wires.
NOTE:
Technically this type of grounding is only required when a DXLink Transmitter or Receiver is connected to an ungrounded
device, but this added grounding measure can be used at the discretion of the installer.
Items Required
Small adjustable wrench or socket driver
6 foot ground wire with ring terminal ends (provided)
NOTE:
Currently shipping DXLink Transmitters and Receivers provide a designated ground location on the rear of the chassis for
attaching a ground wire. For instructions on attaching a ground wire to DXLink Modules or DXLink Wallplates with a designated
ground location, see page 37.
Attaching a Ground Wire to a Common Earthed Ground
Connect the running end of the ground wire (fixed end attached to DXLink Module or Wallplate) to a common earthed ground
(ideally, referenced to the Enova DGX Switcher).
IMPORTANT:
If one DXLink Transmitter or Receiver is grounded, any remaining ungrounded units that are connected to the same
board on the Enova DGX Switcher must also be grounded.
Attaching a Ground Wire to Module without Designated Ground
Earlier model DXLink Transmitter and Receiver Modules without a designated location support chassis ground attachment through
the HDMI jackscrew on the rear of the chassis.
IMPORTANT:
Before attaching the ground wire to the chassis, ensure all connectors are clear.
To attach a ground wire to a module with a jackscrew:
1.
If powered, power down the DXLink Module.
2.
Remove the jackscrew and silver washer above the HDMI connector.
3.
Secure the ring terminal of the ground wire against the chassis with the jackscrew and washer.
FIG. 44
Remove jackscrew and washer above HDMI connector
Remove jackscrew and washer
