Alcatel Canada 24T28A01D22C 7390 24 GHz Co-Pol RBS User Manual BS Manual pages 51 to 55

Alcatel Canada Inc 7390 24 GHz Co-Pol RBS BS Manual pages 51 to 55

BS Manual pages 51 to 55

3CC12424AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 51/302763.3.4 Installation of the RBS antenna on the pole mountingConsiderations–The antenna must be installed before the RBS unit.–The form of the sectored antennas may vary. Always refer to the "TOP" marking on the antennawhen installing on the pole mounting.Storage (Figure 27 – Installing the RBS unit antenna)1. Position the RBS antenna against the pole mounting support (ref. 2), and install it at the oppositeside of the RBS unit.2. Secure the RBS antenna using seven M6 x 25 screws (ref. 3) and onduflex washers.Figure 26 – Antenna noseWHATEVER THE TYPE OF ANTENNA, WHETHER FOR VERTICAL ORHORIZONTAL POLARIZATION, ALWAYS POSITION THE ANTENNA WITH THE "TOP" MARKING UPPERMOST. THE ORIENTATION OF THE ACCESS GUIDEDOES NOT DEFINE THE POLARIZATION.TAKE CARE NOT TO DAMAGE THE O-RING SEAL ON THE NOSE OF THEANTENNA CONNECTION: SEE Figure 26 – Antenna nose.IF THE RBSs ARE NOT TO BE MOUNTED IMMEDIATELY AFTER THEMOUNTING OF THE ANTENNA, PROTECT THE CONNECTION NOSE(FROM WATER, DIRT AND IMPACT).O-ring seal
52/302 Issue 01 - April 2001 - Draft 04 3CC12424AAAA TQ BJA 0176Figure 27 – Installing the RBS unit antenna3.3.5 Installation of the RBS UnitStages1. Remove the two transparent plastic protective caps : that of the antenna and that of the RBS unit.Figure 28 – RBS and antenna nose2. Take the transceiver by the handle and place the two bosses in the "nose" of the unit against the twoIMPORTANT: THE RADIO UNIT ASSEMBLY MUST ALWAYS BEMANIPULATED BY ITS HANDLE ONLY.IMPORTANT: REMOVE THE CAP WITH CARE, TAKING CARE NOT TO DAMAGE THE SEAL WINDOW AT THE BOTTOM OF THE GUIDE.IMPORTANT: THE O-RING SEAL (SEE Figure 26 – Antenna nose) SHOULD BE COATEDBEFORE SETTING (SILICON GREASE PROVIDED WITH THE ANTENNA).Transceiver side antenna side213guidesseal window at the bottom of the guide"Antennanose" slots N point
3CC12424AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 53/30276slots in the "nose" of the antenna.Note: the RBS-DBS link cable (N point) should be towards the base of the transceiver.Note: the sectored antenna must be placed with the TOP marking uppermost, the antenna "nose" slotscoinciding with those of the RBS.The waveguide needs to be positioned so that it is aligned with the antenna’s rectangular orifice.3. While holding the radio unit, begin by locking (See Figure 29 – Locking the Radio unit) the two sidesnap-locks on the support, then that at the bottom, followed by that at the top.Figure 29 – Locking the Radio unitREMINDER: The RBS/antenna assembly requires no additional seal on the SHF flanges; the twoends are smooth. Sealing is provided by the O-ring seal around the male "noses" (see Figure 26 –Antenna nose).NEVER USE THE EXTERNAL KAYWAYS TO LOCK THE RADIO UNIT.Right locking position
54/302 Issue 01 - April 2001 - Draft 04 3CC12424AAAA TQ BJA 01763.3.6 Antenna alignment3.3.6.1 Deflection characteristicsThe deflection obtained with the turnbuckles is : elevation = ± 25° and bearing = ± 10°.3.3.6.2 Definitions about antenna alignmentTilt or Elevation : angle of tilt from the horizontal.Tilt UP : the antenna points upwards.Tilt 0 : the antenna is horizontal.Tilt DOWN : the antenna points downwards.3.3.6.3 Coarse azimutal alignment of the antennaThe azimutal coarse alignment has to be carried out when installing the pole mounting.Figure 30 – Azimutal alignement of antennaREMINDER: THE RADIO UNIT/ANTENNA ASSEMBLY MUST ALWAYS BE MANIPULATED BY THE RADIO UNIT’S HANDLE ONLY.CAUTION: THE BRACKET NUTS MUST BE FASTENED TO TORQUE OF 3 mdaN,± 10%. THE TUBE AND THE BRACKETS MUST BE CLEAN AND WITHOUTGREASE, EXCEPT ON THE THREADS.
3CC12424AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 55/302763.3.6.4 Coarse azimutal alignment of the antennaThe elevation alignment is performed only with the elevation turnbuckles. If the elevation angle is higherthat (+ 5°) or lower than (- 5°), it is necessary to:–remove completely one of the 2 screws fixing the antenna support on the azimut support and,–insert it in the third hole accessible as shown in the Figure 31 – Elevation coarse alignement ofantenna.Figure 31 – Elevation coarse alignement of antennaCAUTION: IN ALL CASES, THE SUPPORT MUST BE FIXED WITH 3 SCREWS,2 PUT IN THE WINDOW AND 1 CORRESPONDING TO ITS AXIS OF ROTATION.ALL SCREWS MUST BE TIGHTENED AND SECURED ONLY AFTER THE ENDOF THE ALIGNMENT OF ANTENNA.CAUTION: TAKE CARE TO PUT THE 2 SCREWS IN THE WINDOW WITH THEFLAT WASHERS POSITIONED AS SHOWN IS THE FIGURE BELOW.Put the screws in the holes.Put the screws holes i.e. the the window, in the 2and thevisible hole.through external two external middle α = 25°α = 25°If: -5° < α < 5°If: α > 5°or: α < - 5°

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