Environment Of The Equipment; Table 6-29 Requirements For The Concentration Of Mechanically Active Substances In The Running Environment Of The Equipment; Table 6-30 Requirements For The Concentration Of Chemically Active Substances In The Running Environment Of The Bbu; Table 6-31 Requirements For The Concentration Of Chemically Active Substances In The Running Environment Of The Rru - Huawei Airbridge DBS3900 Product Description

6 Technical Specifications of the DBS3900
Requirements for Air Purity
The requirements for air purity in the running environment of the equipment are as follows:
Table 6-31 Requirements for the concentration of mechanically active substances in the running

environment of the equipment

Mechanically Active
Substance
Dust particles
The diameter of a dust particle is not smaller than 5 µm.
Table 6-32 Requirements for the concentration of chemically active substances in the running
environment of the BBU
Chemically Active
Substance
SO
H
NH
Cl
Table 6-33 Requirements for the concentration of chemically active substances in the running
environment of the RRU
Chemically Active
Substance
SO
H
NH
6-20
The equipment is protected from rodents, such as mice.
The air is free from explosive, electroconductive, magnetoconductive, and corrosive
dust.
For the BBU, the concentration of mechanically active substances complies with the
requirements listed in
The concentration of chemically active substances complies with the requirements listed
in Table 6-30 and Table
2
S
2
3
2
2
S
2
3
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Table 6-29.
Unit
3
Particles/m
6-31.
Unit
3
mg/m
3
mg/m
3
mg/m
3
mg/m
Unit
3
mg/m
3
mg/m
3
mg/m
Airbridge DBS3900 CDMA Base Station
Product Description
Concentration
4
≤ 3 x 10
(no visible dust accumulated
on desktops within three
days)
Concentration
≤ 0.20
≤ 0.006
≤ 0.05
≤ 0.01
Concentration
≤ 0.30
≤ 0.10
≤ 1.00
Issue 11 (2010-06-18)