Configuration Requirements Of The Rf Antennas; Configuration Principles Of The Satellite Synchronization Antenna; Table 3-2 Power Supply Configuration In Outdoor Installation - Huawei Airbridge DBS3900 Product Description

3 Configuration Principles of the DBS3900
Outdoor Installation of the DBS3900
When installed outdoors, the DBS3900 can be installed in outdoor centralized mode or
outdoor distributed mode. The configuration principles of the power supply in these two
modes are the same, as listed in

Table 3-2 Power supply configuration in outdoor installation

Power Input Method
220/110 V AC
-48 V DC

3.4 Configuration Requirements of the RF Antennas

This section describes the general requirements for the configuration of RF antennas. In
practice, choose antennas according to the actual network planning solution.
The general guideline is as follows:
3.5 Configuration Principles of the Satellite
Synchronization Antenna
This describes the configuration principles of the satellite synchronization antenna.
The DBS3900 supports GPS/GLONASS satellite cards. The configuration principles of the
satellite synchronization antenna in general situations and situations where system reliability
needs to be enhanced are as follows:
3-4
For omni-directional cells, use omni-directional antennas.
For directional cells, use directional bi-polarization antennas or directional
uni-polarization antennas according to the actual situation.
For a large coverage area, use antennas with a great amount of gain (for omni-directional
cells or directional cells).
For sector antenna configuration, use directional antennas or omni-directional antennas
according to the sector design in the network planning solution.
For omni-directional cells, use two omni-directional uni-polarization antennas that work
in duplex mode.
Generally, one DBS3900 requires only one set of satellite synchronization antenna
equipment.
When the DBS3900 is configured with only the CMPT, the system can receive only GPS
signals.
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Airbridge DBS3900 CDMA Base Station
Table 3-2.
Power Supply Configuration
APM30 (220 V AC type), storage battery
cabinet (optional)
APM30 (-48 V DC type), storage battery
cabinet (optional)
Product Description
Issue 11 (2010-06-18)