Alcatel Canada 24T28A01D22C 7390 24 GHz Co-Pol RBS User Manual BS Manual pages 41 to 45

Alcatel Canada Inc 7390 24 GHz Co-Pol RBS BS Manual pages 41 to 45

BS Manual pages 41 to 45

3CC12424AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 41/30276Figure 13 – Dimensions of the RBS flat unit
42/302 Issue 01 - April 2001 - Draft 04 3CC12424AAAA TQ BJA 01763.3.2 Installation and orientation of the mechanical system 9900UXI102Considerations–Installation can be carried out on an existing or newly installed tube or pole.–The external diameter of the tube or pole is 114 mm in standard configuration.–The mechanical assembly is supplied complete, mechanically assembled, with screw fasteningskit and ground terminals.Note: other tube diameters may be used depending on the loads to be supported: minimum diameter76 mm and maximum 114; for this, please consult us.Figure 14 – Installation of the pole mounting 9900UXI102 with RBS cubeVERTICALITY OF THE BEARING: ± 0.5 ° FOR THE POLE OR TUBE.Brackets NutGrower washerFlat washer"Top" markerM6 x (7) screwCasting
3CC12424AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 43/30276Figure 15 – Installation of the pole mounting 9900UXI102 with RBS flatNote: the coarse horizontal alignement is done during the installation of the pole mounting.IMPORTANT: YOU MUST DEFINE THE POSITION OF THE EQUIPMENT RESPECT TO THE PIPE (RIGHT OR LEFT SIDE) BEFORE INSTALLING.NutGrower washerFlat washer3451 M6 x (7) screwCasting 2Brackets6
44/302 Issue 01 - April 2001 - Draft 04 3CC12424AAAA TQ BJA 01763.3.3 Installation rules for multi-RBS configurations3.3.3.1 Main configuration (1+0)For installation configurations containing several RBSs, imperatively apply the following rules to ensureefficient radio transmissions:–Position the antenna to ensure best clearance; installation as near as possible to the corners ofthe building or pylon is therefore strongly recommended. To avoid interference with the buildingthe antenna should not be too low: vertical clearance must be a view angle of at least ± 20° fromthe antenna axis.–For an installation involving initially less than 4 RBSs, select the location of the first RBSs leavingspace for other RBSs that may be added later in the event of extension to the installation.–Several configurations are possible depending on the site and the number of radios; the installa-tion should be the best compromise possible between: number of masts/radio performance. If thedifferent configurations possible - in the case of four radios to be installed on a building - are con-sidered, the configuration giving the best compromise corresponds to figure 16, where 2 mastshave been installed with 2 RBSs per mast.–However, it is allowable to install up to 4 RBS, equipped with the standard 90°/15 dBi antenna, onthe same mast (90° angle between each sector, see Figure 19 – Example of multi-RBS configu-ration: 4 RBS on the same mast (not advisable)). This configuration can’t be upgraded to the 1+1configuration. We strongly recommend to use 2 different tubes to allow 1+1 extension.–In the case of use of several RBSs equipped with standard antennas on the same mast, the ins-tallation restrictions are as follows:•the lowest radio must avoid the highest point of the building (obey the 20° minimum clearanceangle specified above),•the radios must be stacked at the same distance from each other, the minimum distancebetween two consecutive antenna axes being 0.5 m (see Figure 16 – Clearances for adjacentsectors).Figure 16 – Clearances for adjacent sectorsTHE 90° ANTENNA COVERAGE OF EACH ANTENNA MUST BE CLEAR OF OBSTACLES.FROM ANTENNA AXIS : HORIZONTAL CLEARANCE : ± 60°, VERTICAL CLEARANCE ± 20°¡ClearancesAntenna Main LobeDimensions are in millimeters
3CC12424AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 45/30276Multi-RBS configuration examples in the case of 4 RBS installation:Figure 17 – Example of multi-RBS configuration: 4 masts with 1 RBS per mastFigure 18 – Example of multi-RBS configuration: 2 masts with 2 RBS per mast (recommended)Side viewTop viewTop viewSide view

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