
ICT 2.0.1 AV Standards Addenda and Updates
where shielded is employed, industry recommendations must be followed:
o Belden: “When installing shielded systems it is important to maintain shielding integrity
at all connection points and to ensure a low resistance path to ground as specified in the
TIA-607-B Bonding and Grounding Standard” and
o Valens: “Grounding of the foil in one location from the patch panel in the
telecommunications closet to the TGB is required” – it is noted that this advice is
inconsistent with Valens direct-wiring architecture described above: hence this
requirement must be interpreted to mean single-point grounding at the patch-panel in
the AV rack or via the switch itself.
use of unshielded:
given the very real practical and theoretical downsides of shielded, consideration should be
given to the use of UTP (Cat6A or greater) in the following circumstances:
o unchallenging power environments, i.e. where all AV devices in the room (including
projectors and user power in table-boxes etc.) are powered from the same circuit; and
share a common earthing system; where there is no significant power
interference/noise problems or sources nearby; and the circuit is fed from a shared
wired-in UPS providing a clean power source to all involved equipment
however choice of shielded vs unshielded ultimately always remains with the integrator, as they
have responsibility for ensuring a reliable functioning system outcome
every DVX, DGX, DXLink and EXB must be allocated an IP address
o the IP address shall be a fixed private address issued by Deakin’s DHCP service
o all DXLink and downstream attached devices (e.g. projector) must be allocated IP
addresses in the same subnet/vlan as the upstream hosting DVX/DGX/DXLink
(the Ethernet switch inbuilt within these products is a simple single-vlan switch and
hence cannot support multiple downstream vlans)
Please note the following idiosyncrasies applying to specific AMX models:
the HDbaseT outputs on the DVX-3155HD do not supply power (an AMX PDXL-2 power injector
at the DVX end or an AMX DXLink plug-pack AC power supply at the DXLink receiver is required)
[the 3155 inputs deliver power as do the 2155 inputs and outputs]
the DGX DVI input card is DVI-D only (not multi-format)
for any form of analog video input into DGX an external DXLink adaptor must be provisioned
[DVX models have multi-format inputs via DVI-I]
[none of DGX nor DVX range have any analog vision outputs]
the DGX does not have:
o inbuilt audio DSP
o inbuilt audio power amplifier
o still-image logo repository
o web control interface
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