Dali Matrix PS System Installation and Commissioning Guide
|
xiii
Dali Wireless Proprietary and Confidential | DW-MAN-036 Rev 06
RF Exposure
hd33 P S Q uad B and
Band 1: 450 MHz
In the Frequency Range of 300 to 1500 MHz, the maximum power density limit for the
occupational/controlled exposures is f/300 mW/cm
2
for an average time of 6 minutes.
In the Frequency Range of 300 to 1500 MHz, the maximum power density limit for the general
population/uncontrolled exposures is f/1500 mW/cm
2
for an average time of 30 minutes.
The antenna connected to the product is specific to the deployment. The worst c ase scenario
occurs when using a very high gain outdoor/indoor antenna. However a typical indoor antenna is
shown in the following example:
The highest expected output power is 35 dBm at 511.9875MHz. For an output level of 35 dBm with
an indoor antenna gain of 3 dBi, the EIRP is 38 dBm.
The maximum power density safe exposure level for general population/uncontrolled exposure of
30 minutes for the frequency of 511.9875 MHz is 0.341 mW/cm
2
.
Conducted Output
Power (dBm)
Max Antenna
Gain (dBi)
Max EIRP
(mW)
Power Density Limit
Allowed (mW/cm²)
Safe Distance
(cm)
35
3
6310
0.341
39
As shown above, the minimum s a f e distance where the MPE limit is reached is 3 9 cm
from the unit with a 3 dBi antenna and no distribution loss.
The antenna used in the above table is a Galtronics PEAR S5491i with 3dBi gain in the 450 MHz
band.
If the antenna will be positioned closer to end users than 39cm, then the installer must calculate
the safe distance for a given installation using the form ulas provided.
Band 2: 700 MHz
In the Frequency Range of 300 to 1500 MHz, the maximum power density limit for the
occupational/controlled exposures is f/300 mW/cm
2
for an average time of 6 minutes.
In the Frequency Range of 300 to 1500 MHz, the maximum power density limit for the general
population/uncontrolled exposures is f/1500 mW/cm
2
for an average time of 30 minutes.
