User Manual
Airbridge cBTS3612 CDMA Base Station
System Description
Appendix D Electromagnetic Radiation
D-2
occupational/controlled limits apply provided he or she is made aware of the
potential for exposure.
Uncontrolled limits are used for general public. General population/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 expres sed 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 is 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.
Limits for Occupational/Controlled Exposure
Frequency Range
(MHz)
Electric Field
Strength (E) (V/m)
Magnetic Field
Strength (H) (A/m)
Power Density (S)
(mW/cm2)
0.3-3.0
3.0-30
30-300
300-1500
1500-100,000
614
1842/f
61.4
--
--
.63
4.89/f
0.163
--
--
(100)*
(900/f2)*
1.0
f/300
5
Limits for General Population/Uncontrolled Exposure
Frequency Range
(MHz)
Electric Field
Strength (E) (V/m)
Magnetic Field
Strength (H) (A/m)
Power Density (S)
(mW/cm2)
0.3-3.0
3.0-30
30-300
300-1500
1500-100,000
614
842/f
27.5
--
--
1.63
2.19/f
0.073
--
--
(100)*
(180/f2)*
0.2
f/1500
1.0
Power density S [mW/cm
2
] for controlled area at 880 MHz
2
/
9
.
2
300
880
300
]
[
cm
mW
MHz
f
S
=
=
=
