HUAWEI BTS3012 Fast Installation Guide Internal Use
22
Installation
requirements
of antenna
support
1.
Keep the antenna support vertical to prevent the antenna from tilting after installation.
2.
There should be a distance bigger than 1.2m between supports in a cell.
3.
There should be a distance bigger than 0.5m between two cells in a platform.
4.
When the GSM antenna has the same height as the CDMA antenna, there should be a distance
bigger than 0.5m between a GSM cell and a CDMA cell.
5.
After a support is fixed, there should be no obstacle, for example the microwave antenna, in front
(away from the tower) of the support.
Installation
requirements
of antenna
1.
Manually adjust the antenna plane to a proper mechanical tilt, and keep the electric adjusted tilt
of the antenna lever to 0°, namely pull out the electric adjusted antenna lever and fix it to 0°.
2.
During the construction, do not pull the lever out from the electric adjusted antenna. Pull out the
lever and set it to 0° after the antenna is mounted.
3.
Make simple waterproof processing of the two unused antenna interfaces in the dual-band
antenna.
4.
The angle between the antenna and support should be smaller than 5°.
5.
An omni-directional antenna should be at least 1.5m away from the tower. A directional antenna
should be at least 1m away from the tower.
6.
The horizontal distance between the main antenna and diversity antenna of omni-directional
antenna should be as follows: not smaller than 4m for M900; not smaller than 2m for M1800
7.
Two directional antennae on a support should have a distance of at least 0.5m from each other.
Tower
Electrode
Grounding network
of the tower
Conductor between grounding networks
BTS
Grounding network of BTS
