Huawei iSiteC BTS3601C Installation Manual page 18

Installation Manual
iSiteC BTS3601C CDMA Base Station
(1) Tower
(4) Jumper waterproof elbow
Figure 3-22 Installing the omni antenna on tower platform
I. Installation requirements
When installing the omni antenna on the tower, make sure the antenna is in the
l
protection range of lightning arrester on the tower. The distance between the omni
antenna and the tower body should be left at least 1.5m.
The antenna axis should be vertical to the horizontal plane with error less than !1°.
l
The TX and RX antenna of omni antenna can be installed on one antenna support,
l
or be separately installed. The specified installation position should be determined
according to the engineering design drawing.
II. Installation procedure
1) Make the feeding point of the antenna facing down and the jacket near the
mainstay support. The top of the jacket should be on the same level or a little bit
higher than the top of the support.
2) As shown in Figure 3-23, secure the antenna fixing clip and the mainstay support
properly to ensure its load bearing and wind resistibility. It should not be too tight to
damage the jacket of the antenna.
3) Check whether the antenna axis is vertical to the horizontal plane with angle tester.
If the error is equal to or greater than !1°, adjust the antenna axis and then fasten
it.
4) Make waterproof elbow at the antenna connector.
3 Installing RF Antenna and Feeder System
(2) Tower-top antenna support
(5) Cable tie
3-17
Hardware Installation
(3) Omni antenna