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F
47 D
IGURE
IRECTIONAL
2. Fix the directional antenna to the pole.
Attach the antenna along with fixtures onto the pole. Do not
tighten the screws too tightly to allow easy adjustment of the
direction and downtilt of the antenna.
tightness must be appropriate enough to ensure that the an-
tenna does not slid downward.
3. Adjust the antenna's azimuth.
i.
Determine the azimuth of the antenna by using a compass,
and determine the installation direction according to the
engineering design drawing.
ii. Turn the antenna slightly to adjust it's face direction as
shown in
Figure
tion of the antenna with a compass until the error comes
within the engineering design requirements (generally not
more than 5°).
iii. After adjusting the azimuth of the antenna, tighten the fas-
tener "A".
4. Adjust the antenna's downtilt.
i.
Adjust the downtilt of the measurement meter to obtain
the required angle according to the engineering design.
ii. Turn the top of the antenna slightly, and loose or fast the
antenna at its top. Adjust the downtilt angle of the antenna
till the measurement meter's bubble comes to be centered
as shown in
Confidential and Proprietary Information of ZTE CORPORATION
Chapter 3 Equipment Installation
A
I
NTENNA
NSTALLATION
47. At the same time, measure the direc-
Figure
48.
However, degree of
53
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