USER MANUAL FOR RA-7100
RA-7100 II2 QI
Copyright - refer to title page
Page 20
ENU Status : 1-0-0
3.2
SITE PLANNING CONSIDERATIONS
Site Considerations
The MU can be located indoors to facilitate coupling of BTS signals and power supply connections.
The ALC range of received BTS signal is -10~10 dBm. Hence, an appropriate coupler must be used
according to the BTS output power.
The site consideration for RU is listed below:
•
The distance between the service antenna of RU and coverage area should satisfy line of sight
requirements for maximum coverage area.
•
The maximum fiber length is 13km, with a maximum path loss of 6.5dB.
•
The system delay of the optical system must be taken into consideration when there are
neighboring BTS sites overlapping in coverage.
Installation Location
Mounting surface shall be capable of supporting the weight of the equipment.
In order to avoid electromagnetic interference, a proper mounting location must be selected to
minimize interference from electromagnetic sources such as large electrical equipment.
Environmental
Humidity has an adverse effect on the reliability of the equipment. It is recommended to install the
equipment in locations having stable temperature and unrestricted air-flow.
The installation location for MU should be well ventilated. It is recommended that the distance
between the enclosure and the wall (or any other equipment) should be at least 80cm. The equipment
has been designed to operate at the temperature range and humidity level as stated in the product
specifications that of temperature ranges from -20~40
o
C and the relative humidity is at most 85%.
Direct day light to the RU should be avoided. If the direct day light temperature exceeds 40
o
C, a
shelter should be provided for it.
Powering
The power supply unit (PSU) provides power to all modules within the equipment. Depending on the
product variant, it is recommended that the PSU operates on a dedicated AC circuit breaker or fused
circuit.
Grounding Requirement
Verify that the equipment has been well grounded. This includes antennas and all cables connected
to the system. Ensure lightning protection for the antennas is properly grounded.
Cable Routing
Depending on equipment configuration, a variety of types of cables are connected to the MU and RU:
coaxial cables, optical fibers, power cable, communication cable, and commissioning cable. Where
applicable, ensure cables are properly routed and secured so that they are not damaged.
