Huawei iSiteC BTS3601C Installation Manual page 85

Installation Manual
iSiteC BTS3601C CDMA Base Station
requirements for horizontal diversity between two antennae. For a directional BTS,
only a dual polarization antenna is required and the spacing between two poles
should be determined for the convenience of platform establishment.
If the platform is established 3m above the ground, for an O(1) BTS, the platform
l
should be strong enough to bear the load over 500kg; for an S(1/1/1) BTS, the
platform is required to bear the load over 1500kg.
Between two poles, two or more metal fixing beams should be installed. And at the
l
joints between beams and poles, the beams should be welded reliably with the
down leads of pole lightning arresters. Dot welding is not allowed. It is
recommended to install a metal fixing beam respectively on the platform and at the
place 2m above the platform. And install two (according to the type of BTS) 2m
metal holding supports between two beams by soldering so as to bear the
BTS3601C and other equipment. The diameter of each holding support is
60mm~114mm, and the spacing between them is 80cm.
Install a vertical cabling ladder (300mm wide) via the metal fixing beam between
l
two poles. The lower end of the ladder should be 1.2m away from the platform.
Connect the fixing beams, on which the cabling ladder is fixed, to the flat steel (for
lightning protection and grounding) by soldering. Dot welding is not allowed.
The antenna support is made of steel pipe with the diameter 60mm~114mm. The
l
omni antenna should be 1m away from the antenna support horizontally. In the
case of a directional antenna, its holding support may remain unextended.
II. Layout
Figure 2-5 shows the installation of BTS3601C by two concrete poles.
2-7
Hardware Installation
2 Installing Cabinet Hardware