User's Manual

91 080 0730F - OR2-SBLP1 SERIES Page 5 ENG Edit. 02
FIXED BAND OFF-AIR REPEATERS
4. PROCEDURES FOR INSTALLATION AND POWER-UP
• Before installing, carefully read the safety norms herewith attached.
• The equipment must be connected to ancillaries specifically designed for the standard in use
and the band to be enhanced.
• The OR2-SBLP1 SERIES has been designed for indoor use only. Changes in temperature
and humidity can influence the reliability of the equipment. The best place to install the
equipment is a tempered and well-ventilated environment.
• A correct equipment installation and setting procedure requires a good knowledge and
experience in installing telecommunication equipment. These activities should be performed
by skilled personnel only. Remember that if the equipment is not installed correctly, it may:
- cause a temporary failure in the BTS,
- be damaged by excessively high input or output signal levels.
To install the equipment we strongly suggest to follow the steps described in the paragraph below.
4.1. PLANNING INSTALLATION
• Selecting the position for the outdoor antenna
The power of the signal coming from the outdoor antenna (donor antenna) has a direct influence on the
efficiency of the indoor coverage. Therefore, it is extremely important to take care in choosing the position
for this antenna and in installing it correctly.
Before installing the outdoor antenna, it is necessary to point the donor BTS to guarantee the best
reception of signal to be enhanced. The best way to perform this activity is by connecting the donor
antenna to a spectrum analyzer (or to a field intensity level measurement instrument) to evaluate the
orientation and position of the antenna which can provide the best signal level.
It is strongly recommended to keep both antennas away from obstacles such as mountains, tall buildings
or billboards.
It is furthermore recommended to use a directional outdoor antenna with, at least, 10dBi gain and to
make sure, insofar as possible, that the antenna is pointing directly towards the BTS.
Please Note:
To obtain the best equipment performances, the outdoor signal must be stronger than -70dBm
and must not go above -20dBm. If the outdoor signal is weaker than -70dBm, it is strongly
recommended to use a high-gain directional outdoor antenna.
The ideal outdoor signal level is in the -60 to -70dBm range.