User's Manual

6-10 Aviat Networks
Chapter 6. Installing the INU and INUe
Power Supply +24 Vdc A PCC is required to provide a +24 Vdc to -48 VDC conversion. The
dc power supply supplying the PCC must be -ve grounded.
There must be no switching or disconnecting devices in the ground
conductor between the dc power supply and the point of connection
to a PCC.
Power Supply Location The INU/INUe must be installed in the same premises as its dc
power supply and be located in the same immediate area (such as
adjacent racks or cabinets) as any other equipment that is
connected to the same dc power supply.
Power Supply Compliance
and Loading
The dc power supply must be UL or IEC compliant for a SELV output
(60 Vdc maximum).
Check to ensure that connection of an Eclipse system to an existing
dc supply does not overload the supply, circuit protection devices
and wiring.
Where a new dc power supply is to be installed for an Eclipse Node,
the power supply should be rated to supply:
• 12.5 A for the INU
•25A for the INUe
•15A for the PCC
Cable routing Eclipse tributary, auxiliary and NMS cables are not to be routed with
any AC mains power lines. They are also to be kept away from any
power lines which cross them.
Grounding The INU must be grounded to the station or master ground, which
must be the same ground as used for the dc power supply. Normally
this is achieved by grounding the INU to the ground bar in its
equipment rack or frame. This bar is most often located to one side
of the rack or at rack top or bottom. In turn, the ground bar is
grounded to the station ground.
Intrabuilding interfaces
and cabling
(NEBS Compliance)
Intrabuilding connections to/from Eclipse ports must only be
connected via intrabuilding or unexposed wiring or cabling.
Intrabuilding ports MUST NOT be metallically connected to
interfaces that connect to the OSP or its wiring. These interfaces are
designed for use as intrabuilding interfaces only (Type 2 or Type 4
ports as described in GR-1089-CORE, Issue 4) and require isolation
from the exposed OSP cabling. The addition of Primary Protectors
is not sufficient protection in order to connect these interfaces
metallically to OSP wiring.
Shielded and grounded cables must be used for intrabuilding
cabling to/from Eclipse ports. Cables must be grounded at both
ends.
Function/Requirement Details