Dali Matrix PS System Installation and Commissioning Guide
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Dali Wireless Proprietary and Confidential | DW-MAN-036 Rev 06
Conducted Output
Power (dBm)
Max Antenna
Gain (dBi)
Max EIRP
(mW)
Power Density Limit
Allowed (mW/cm²)
Safe Distance
(cm)
35.5
3.5
7943
0.574
34
As shown above, the minimum s a f e distance where the MPE limit is reached is 34 cm from
the unit with a 3.5 dBi antenna and no distribution loss.
The antenna used in the above table is a Galtronics PEAR S5491i with 3.5 dBi gain in the
800 MHz band.
If the antenna will be positioned closer to end users than 34 cm, then the installer must calculate
the safe distance for a given installation using the formulas provided.
Band 4: 900 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 case scenario
occurs when using a very high gain indoor/outdoor antenna. However a typical indoor antenna is
shown in the following example:
The highest expected output power is 34.8 dBm at 935.0125MHz. For an output level of 34.8 dBm
with an indoor antenna gain of 3.5 dBi, the EIRP is 38.3 dBm.
The maximum power density safe exposure level for general population/uncontrolled exposure of
30 minutes for the frequency of 935.0125 MHz is 0.623 mW/cm
2
.
Conducted Output
Power (dBm)
Max Antenna
Gain (dBi)
Max EIRP (mW)
Power Density Limit
Allowed (mW/cm²)
Safe Distance (cm)
34.8
3.5
6761
0.623
30
As shown above, the minimum s a f e distance where the MPE limit is reached is 30 cm from
the unit with a 3.5 dBi antenna and no distribution loss.
The antenna used in the above table is a Galtronics PEAR S5491i with 3.5 dBi gain in the
900 MHz band.
If the antenna will be positioned closer to end users than 30 cm, then the installer must calculate
the safe distance for a given installation using the formulas provided.