User's Manual

February 2003
Rev. A
Page 18 of 47
According to ETSI:
(1) The maximum EIRP shall not exceed +20 dBm (100 mWatt).

IMPORTANT! To comply with the FCC/ETSI EIRP limits, the outdoor unit-transmit power need to
be adjusting according to the installed antenna gain. Therefore a professional
installation of the transmitter is required. The outdoor unit must be configured at
the time of installation by qualified personal. Fail to comply with FCC rules may
expose the installer to legal liabilities.

For open outdoor areas with clear line of sight between the SU and the AU the suggested
maximum distance is given in Appendix C – Max RF Power and Distance versus Antenna Gain.
2.4.3.2. Detached Antenna
Operating with detached antenna allowed only after outdoor unit power setup is confirmed not to
exceed +36 dBm EIRP for USA for point-to-multi-point operation or +20 dBm EIRP for Europe for
any antenna used. For point-to-point operation the EIRP can exceeds +36dBm and therefore it
must be configured by a professional installer. The configuration is only allowed by password of
administrator privilege.
The outdoor unit transmit power configuration is done by the Unit Manager Tool. The tool consists
of dedicated software running on a PC. This PC communicates with the outdoors unit via the
Ethernet and is used to burn the configuration parameters (including the transmit power) into the
outdoor unit internal FLASH. The tool limits the max transmit power according to the selected
antenna, the selected regulation (FCC/ETSI) and the selected link type (point-to-multi-point/point-
to-point). Of course the installer, if needed can select a lower power.
For example: if the selected antenna gain is 24 dBi, the regulation is FCC and the link type is
point-to-multi-point, the tool will set the maximum transmitted power (before the antenna) to +12
dBm (so that EIRP will not exceeds +36dBm).
The Unit Manager Tool supports two levels of privilege password: regular user and administrator
user. Since power output levels will affect compliance of the unit with FCC / ETSI rules,
precautions are built into the system to keep the end user from adjusting the power output level
above the regulation limits. Therefore:
• Antenna type (detached or integrated)
• Antenna gain
• Tx Power
• Regulation (FCC or ETSI)
• Link Type (point-to-multi-point or point-to-point)
Configuration is only allowed by password of administrator privilege.
The above configuration is done with the advanced window of the Unit Manager Tool - see
paragraph 10.4.1. For detailed description of how to use the Unit Manager tool See Appendix G -
Using the Unit Manager Tool, on page 40.