User Manual

Table Of Contents
Ericsson Internal
DESCRIPTION 9 ( 24 )
/ XSNJOER 174/1551-LZA 701 0001 Uen
EAB/ FJG/YP ( Louise Cederlund) 2007-06-12 A
Prepared (also subject responsible if other) No.
Approved Checked Date Rev Reference
(1) Normal operation describes the environmental conditions where all units function
as specified.
(2) Non-destructive conditions describe environmental stress above the limits for normal
conditions with no function guaranteed and unspecified degradation. When
the environmental stress has dropped to normal conditions, restoring full RBS
performance requires no manual intervention on site. Non-destructive conditions
refer to a maximum period of 96 consecutive hours, and a maximum total of 5.5
days in a three-year period.
Ground Vibrations
The RBS 2207 is tested to withstand random vibrations of up to 0.2 m²/s². It is
also tested for single shocks up to 40 m/s². The cabinet is tested for seismic
exposure with a test frequency of 1–35 Hz. Maximum test level of the Required
Response Spectrum (RRS) is 50 m/s² within 2–5 Hz. The shape of RRS is
defined by the ETSI standard.
Levelling
For cabinet levelling purposes, the floor must be level to within ±3 mm/2000
mm and the floor gradient be within ±0.1
.
5.2 Environmental Impact
This section describes the effect that the cabinet has on the environment.
Heat Dissipation
The RBS 2207 generates an average heat load of 1000 W. The exact figure is
dependent upon configuration, equipment and site-specific conditions.
5.3 Compliance Distances for Electromagnetic Exposure
The compliance distance is the minimum separation that should be kept
between an antenna and a person in order to ensure that ICNIRP RF exposure
limits are not exceeded.
Note: ICNIRP, "Guidelines for limiting exposure to time-varying electric,
magnetic, and electromagnetic fields (up to 300 GHz)", International
Commission on Non-Ionizing Radiation Protection, Health Physics,
vol. 74, no. 4, 1998.
Ericsson has performed a free-space near-field RF exposure assessment
of typical configurations of RBS 2207 with a recommended antenna. The
resulting dimensions, in metre, for a compliance boundary for both public and
occupational exposure are shown in Table 4.
The compliance boundary is defined as a cylinder around the antenna, see
figure below. The antenna is not located at the centre of the cylinder. Instead
it is located almost at the edge, facing towards the centre of the cylinder.
The distance between the antenna’s rear and the edge of the cylinder is the
"Distance behind antenna". The height of the cylinder is the antenna height