Huawei Airbridge BTS3612A-1900 Technical Manual page 122

Technical Manual
Airbridge BTS3612A CDMA Base Station
transient through a location where occupational/controlled limits apply provided he or
she is made aware of the potential for exposure.
Uncontrolled limits are used for general public. Uncontrolled exposure apply in
situations is which the general public may be exposed, or in which persons that are
exposed as a consequence of their employment may not be fully aware of the potential
for exposure or can not exercise control over their exposure.
The exposure levels can be expressed in terms of power density, electric field strength,
or magnetic field strength, as averaged over 30 minutes for the general public and 6
minutes for trained personnel.
The exposure criteria are frequency dependent, and a chart covering the range from 3
kHz to 100 GHz can be found in NCRP No.86 (references IEEE C95.1-1991). Below
are the limits.
Frequency Range
0.3-3.0
3.0-30
30-300
300-1500
1500-100,000
Frequency Range
0.3-3.0
3.0-30
30-300
300-1500
1500-100,000
Limits for Occupational/Controlled Exposure
Electric Field
Strength (E) (V/m)
(MHz)
614
1842/f
61.4
--
--
Limits for General Population/Uncontrolled Exposure
Electric Field
Strength (E) (V/m)
(MHz)
614
842/f
27.5
--
--
Appendix D Electromagnetic Radiation
Magnetic Field
Strength (H) (A/m)
.63
4.89/f
0.163
--
--
Magnetic Field
Strength (H) (A/m)
1.63
2.19/f
0.073
--
--
D-2
System Principle
Power Density (S)
(mW/cm 2 )
(100)*
(900/f 2 )*
1.0
f/300
5
Power Density (S)
(mW/cm 2 )
(100)*
(180/f 2 )*
0.2
f/1500
1.0