Forward Power Test - Huawei Airbridge BTS3606E Commissioning Manual

Airbridge BTS3606E&3606AE
System Commissioning Guide
When the BTS3606E/BTS3606AE uses the multi-carrier transceiver, the CMTR/OMTR and
CMPA/OMPA need about five minutes to perform self adaptation after software loading.
During this period, the index of transmit signals cannot satisfy the rated requirement and the
adjacent channels are affected.

3.5.1 Forward Power Test

This section describes how to conduct a forward power test. It also describes the precautions
you must take before conducting a forward power test.
Precautions
Pay attention to the following points when conducting a forward power test:
Test Procedure
The test procedure is as follows:
Step 1 Connect the cables.
Figure 3-8 shows the connection for forward power test when configuring a CDDU.
Issue 02 (2006-10-10)
The fan box must be installed to ensure the normal operation of the power amplifier.
Power unit is 0.1 dBm.
Ensure that the coupling port without the connection lines is connected to a matching
load to avoid generating internal interference and external radiation.
Consider RF cable loss (it is related to the texture and thickness of the RF cable) when
analyzing the test result. In general, the loss of one-meter cable is 0.5 dB, and that of
two-meter cable is 1 dB.
Before the power test, stop all services. The TRM restarts after the test is complete.
Connect the power meter to the TX/RX-TEST port using an RF coaxial cable and then
perform the power test.
Take the cable loss and the coupling degree of the TX/RXM-TEST port into account.
The coupling degree of the TX/RX-TEST port is available in the model information of
this port. It is generally 30 dB.
If a high-precision power meter is used, carry out the test on the antenna port and test
port. If a low-precision power meter is used, carry out the test on the antenna port.
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3 Commissioning Process
3-21