Airbridge DBS3900 CDMA Base Station
Product Description
6 Technical Specifications of the DBS3900
Issue 11 (2010-06-18)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
6-17
Table 6-26
Requirements for the concentration of mechanically active substances in the
transportation environment of the equipment
Concentration
Mechanically
Active Substance
Unit
BBU
RRU
Suspended dust
mg/m
3
No
requirement
≤
35
Precipitable dust
mg/m
2
·h
≤
3.0
≤
0.2
Grit mg/m
3
≤
100
≤
30
NOTE
z
The diameter of a suspended dust particle is not greater than 75 µm.
z
The diameter of a precipitable dust particle is not smaller than 75 µm and not greater than 150 µm.
z
The diameter of a piece of grit is not smaller than 150 µm and not greater than 1000 µm.
z
The concentration of chemically active substances complies with the requirements listed
in
Table 6-25
.
Table 6-27
Requirements for the concentration of chemically active substances in the
transportation environment of the equipment
Chemically Active
Substance
Unit
Concentration
SO
2
mg/m
3
≤
0.30
H
2
S mg/m
3
≤
0.10
NO
2
mg/m
3
BBU:
≤
0.50
RRU:
≤
0.05
NH
3
mg/m
3
≤
1.00
Cl
2
mg/m
3
≤
0.10
HCl mg/m
3
≤
0.10
HF mg/m
3
≤
0.01
O
3
mg/m
3
≤
0.05
Mechanical Stress Requirements
Table 6-26
and
Table 6-27
list the requirements for the mechanical stress in the transportation
environment of the equipment.