Dali Matrix PS System Installation and Commissioning Guide
|
ix
Dali Wireless Proprietary and Confidential | DW-MAN-036 Rev 06
30
7
5012
0.2
45
As shown above, the minimum safe distance where the MPE limit is reached is 45 cm from the
unit with a 3 dBi antenna and no distribution loss.
If the antenna will be positioned closer to end users than 45 cm, then the installer must calculate
the safe distance for a given installation using the formulas provided.
hd33 P S Dual B and
150 MHz Band, Mode A (2 W)
In the Frequency Range of 30 to 300 MHz, the maximum power density limit for the
occupational/controlled exposures is 1 mW/cm
2
for an average time of 6 minutes. In the
Frequency Range of 30 to 300 MHz, the maximum power density limit for the general
population/uncontrolled exposures is 0.2 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 outdoor/indoor antenna. However a typical indoor antenna is
shown in the following example:
The highest expected output power is 34 dBm at 157.5MHz. For an output level of 34 dBm with
an indoor antenna gain of 3 dBi, the EIRP is 37 dBm.
The maximum power density safe exposure level for general population/uncontrolled exposure of
30 minutes for the frequency of 157.5 MHz is 0.2 mW/cm
2
.
Conducted Output
Power (dBm)
Max Antenna
Gain (dBi)
Max EIRP
(mW)
Power Density Limit
Allowed (mW/cm²)
Safe Distance
(cm)
34
3
5012
0.2
45
As shown above, the minimum safe distance where the MPE limit is reached is 45 cm from the
unit with a 3 dBi antenna and no distribution loss.
If the antenna will be positioned closer to end users than 45 cm, then the installer must calculate
the safe distance for a given installation using the formulas provided.
150 MHz Band, Mode B (5 W)
In the Frequency Range of 30 to 300 MHz, the maximum power density limit for the
occupational/controlled exposures is 1 mW/cm
2
for an average time of 6 minutes. In the
Frequency Range of 30 to 300 MHz, the maximum power density limit for the general
population/uncontrolled exposures is 0.2 mW/cm
2
for an average time of 30 minutes.