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

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Document ID	157051
Application ID	wq8UdXTEg1hq8u1HcpcHtg==
Document Description	BS Manual pages 51 to 55
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	153.59kB (1919839 bits)
Date Submitted	2001-06-28 00:00:00
Date Available	2001-08-24 00:00:00
Creation Date	2001-06-27 12:22:48
Producing Software	Acrobat Distiller 4.05 for Windows
Document Lastmod	2001-06-27 12:23:07
Document Title	BS Manual pages 51 to 55

3.3.4
Installation of the RBS antenna on the pole mounting
Considerations
– 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 antenna
when installing on the pole mounting.
WHATEVER THE TYPE OF ANTENNA, WHETHER FOR VERTICAL OR
HORIZONTAL POLARIZATION, ALWAYS POSITION THE ANTENNA WITH THE "TOP"
MARKING UPPERMOST. THE ORIENTATION OF THE ACCESS GUIDE
DOES NOT DEFINE THE POLARIZATION.
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 opposite
side of the RBS unit.
2. Secure the RBS antenna using seven M6 x 25 screws (ref. 3) and onduflex washers.
TAKE CARE NOT TO DAMAGE THE O-RING SEAL ON THE NOSE OF THE
ANTENNA CONNECTION: SEE Figure 26 – Antenna nose.
IF THE RBSs ARE NOT TO BE MOUNTED IMMEDIATELY AFTER THE
MOUNTING OF THE ANTENNA, PROTECT THE CONNECTION NOSE
(FROM WATER, DIRT AND IMPACT).
O-ring seal
Figure 26 – Antenna nose
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antenna side
Transceiver side
Figure 27 – Installing the RBS unit antenna
3.3.5
Installation of the RBS Unit
IMPORTANT: THE RADIO UNIT ASSEMBLY MUST ALWAYS BE
MANIPULATED BY ITS HANDLE ONLY.
Stages
1. Remove the two transparent plastic protective caps : that of the antenna and that of the RBS unit.
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 COATED
BEFORE SETTING (SILICON GREASE PROVIDED WITH THE ANTENNA).
guides
seal window at the
bottom of the guide
"Antennanose" slots
N point
Figure 28 – RBS and antenna nose
2. Take the transceiver by the handle and place the two bosses in the "nose" of the unit against the two
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slots 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" slots
coinciding 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 side
snap-locks on the support, then that at the bottom, followed by that at the top.
Right locking position
NEVER USE THE EXTERNAL KAYWAYS TO LOCK THE RADIO UNIT.
Figure 29 – Locking the Radio unit
REMINDER: The RBS/antenna assembly requires no additional seal on the SHF flanges; the two
ends are smooth. Sealing is provided by the O-ring seal around the male "noses" (see Figure 26 –
Antenna nose).
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3.3.6
Antenna alignment
REMINDER: THE RADIO UNIT/ANTENNA ASSEMBLY MUST ALWAYS BE
MANIPULATED BY THE RADIO UNIT’S HANDLE ONLY.
3.3.6.1
Deflection characteristics
The deflection obtained with the turnbuckles is : elevation = ± 25° and bearing = ± 10°.
3.3.6.2
Definitions about antenna alignment
Tilt 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 antenna
The azimutal coarse alignment has to be carried out when installing the pole mounting.
ƒ
ƒ
Figure 30 – Azimutal alignement of antenna
CAUTION: THE BRACKET NUTS MUST BE FASTENED TO TORQUE OF 3 mdaN,
± 10%. THE TUBE AND THE BRACKETS MUST BE CLEAN AND WITHOUT
GREASE, EXCEPT ON THE THREADS.
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3.3.6.4
Coarse azimutal alignment of the antenna
The elevation alignment is performed only with the elevation turnbuckles. If the elevation angle is higher
that (+ 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 of
antenna.
If: -5° < α < 5°
Put the screws in the
two external holes.
α = 25°
If: α > 5°
or: α < - 5°
α = 25°
Put the screws in the 2
holes visible through
the window, i.e. the
middle and the
external hole.
Figure 31 – Elevation coarse alignement of antenna
CAUTION: 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 END
OF THE ALIGNMENT OF ANTENNA.
CAUTION: TAKE CARE TO PUT THE 2 SCREWS IN THE WINDOW WITH THE
FLAT WASHERS POSITIONED AS SHOWN IS THE FIGURE BELOW.
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Modify Date                     : 2001:06:27 12:23:07
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