Commission The Antenna System - Huawei BTS3900 GSM Commissioning Manual

BTS3900 GSM
Commissioning Guide
About This Chapter
This describes how to commission the antenna system. You must check whether the antenna is
connected properly and whether the Voltage Standing-Wave Ratio (VSWR) is normal. If an
RET antenna is configured, you must commission the RET antenna.
7.1 Measuring the VSWR at the Antenna Port
This describes how to check the VSWR at the antenna port. If the VSWR at the antenna port is
less than or equal to 1.5, you can infer that the transmission of the antenna system is normal.
The Site Master is taken as an example to describe the procedure for measuring the VSWR.
7.2 Checking the Antenna Connection
This describes how to check whether the feeders are misconnected by using a drive tester or
through a dialing test. If an RET antenna is configured, check whether the cables of the RET
antenna are connected properly.
7.3 Measuring the Output Power of the TRX
This describes how to obtain the output power of the TRX, which indicates the operating status
of the BTS3900. You need to check the output power of only the TRX that transmits power on
all timeslots.
Issue 03 (2008-07-15)
7

Commission the Antenna System

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7 Commission the Antenna System
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