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User's Manual

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USER MANUAL FOR RA-5700
RA-5700 QI
Copyright - refer to title page
Page 20
ENU Status : 1-1-2
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 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 the system should be well ventilated. 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 32~104
o
F (MU)/ -27~122
o
F (RU) and the relative humidity is at most
85%(MU)/95%(RU).
Direct day light to the RU should be avoided. If the direct day light temperature exceeds 104
o
F, 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.