Instruction Manual

Warnings and Cautions
12 (22) © Nokia Corporation DN00204118
Nokia Proprietary and Confidential Issue 3- 0 en
Note
2.5.3 Safety distance calculation examples
Table describes how the minimum distances for controlled and uncontrolled
environments are calculated.
Table 1. Description for distance calculations in controlled and uncontrolled
environments
Using the formula for minimum safety distances and the appropriate information
for each factor, safety distances can be calculated as in the following calculations
(Table 2) related to a particular environment.
Some of the sample distances in Table 2 are still not available, but will be
available with the full release of the UM.
Limit Description
Minimum Distance in Controlled
Environments*
The minimum distances are calculated
using the reference levels for power
density as presented in the CENELEC
prestandard; f/40W/m
2
, in the
frequency range 400 to 2000MHz,
averaged over any 6 min. time interval.
This is in agreement with other
guidelines (IEEE/ANSI, IRPA, NCRP,
FCC) or stricter.
Minimum Distance in Uncontrolled
Environments*
The minimum distances are calculated
using the reference levels for power
density as presented in the CENELEC
prestandard; f/200W/m
2
, in the
frequency range 400 to 2000MHz,
averaged over any 6 min. time interval.
This is in agreement with other
guidelines (IEEE/ANSI, IRPA, NCRP,
FCC) or stricter.
* Controlled environments refer to locations where there is exposure to
persons aware of the potential exposure. Uncontrolled environments refer to
locations where there is exposure to persons not aware of the potential
exposure and who have no control over it.