ZXG10 BS21 (V2.2) Compact Outdoor BTS for GSM Maintenance Manual
194
Confidential and Proprietary Information of ZTE CORPORATION
¾
Place the antenna feed point downwards and then temporarily fix
the antenna and antenna supports by the antenna fixing clamp (not
necessary to fix them firmly).
¾
Adjust the horizontal angle of the antenna in accordance with the
design requirement, and then fix the antenna fixing clamp firmly.
¾
Adjust the pitch angle of the antenna (refer to Section “Checking
Obliquity of Directional Antennae” for the details) in accordance
with the design requirement, and then fix the pitch angle
adjustment device.
¾
Finally distribute the jumpers.
vi.
Test the performance indexes of the antenna feeder.
After the installation, measure the BRS cabinet top jumper for
indexes of the antenna feeder performance by an antenna feeder
analyzer (SITE MASTER).
If the receiving channel has a tower amplifier, use the current gear
of the multimeter to measure whether there is 60 m ~ 200mA
current at the AEM receiving interface.
vii.
Power on all the ETRM modules again on the PSM module panel.
4.
Confirmation after replacement
i.
Observe the running status of the ETRM and the AEM. If the
indicator is normal, the replacement is basically successfully.
ii.
Make a test call to check whether the BS runs normally after the
replacement.
