User's Manual Part 1

Node B Rack Mount Installation Guide
Version 0.0.3 Page 18 of 39
Step 3 Site Preparations for Node B Installation
The section specifies the facilities that need to be available at the site prior to installation. The
table below is a site checklist that should be completed prior to installation.
It is assumed that the site has already been selected from RF network planning and that site
acquisition or permission has been granted.
Table 6-4 : Site Preparation Checklist
# Facility Complete
Yes/No
1 Mains power supply –48Vdc
2 Availability of suitable Ethernet, E1, T1, E3 or T3 Interfaces
3 connections and trunking/conduits for interfaces
4 Suitable earth
5 Rack or cabinet suitable to mount the NodeB
6 Clearance around the NodeB for cable entry and cooling
- see figure below
Assumptions
It is assumed that prior to Node B installation all civil, electrical distribution, structured
cabling termination work has been completed.
Additionally, all antenna rigging, feeder runs and terminations, associated lightning
protection and earthing, has been done, with certification for safety / compliance issued as
required by local regulations.
It is also strongly recommended that all VSWR plots of the feeder / antenna installations
should be available for inspection.
Positioning the Node B with a rack or cabinet

The digital and RF shelves of the rack mount may be mounted on a single shelf/shelf
support as a pair (
Figure 6-4
) or can be mounted into the rack on separate shelves or
shelf supports (
Figure 6-5
).

The RF shelf needs to be on the top with the digital shelf beneath. The maximum vertical
distance between the shelves shall be not more than 1U (44mm or 1 ¾”).

Selection of a suitable position for the Node B shall be done by surveying possible sites
with regard to the availability of facilities i.e. power, relative position to the INC and
consulting the site plans.

The Node B directly connected to the INC should be sited not more than 100m from the
INC using Shielded Category 5 Ethernet cable as specified.

Care should be taken to position the Node B for easy front and rear access.

The Node B will need to be connected near the feeder terminations and earthing points
as provided on site.

Where the Node B is installed using a microwave link ensure that the microwave link can
support the Ethernet requirements for the IUB interface i.e. 10 or 100 Mbps / full / half
duplex as the Node B and INC may need to be configured manually in order to support
this configuration.