6.3 Checking the DIP Switch Settings of the Boards. Huawei Technologies QISGRFU-1900

BTS3900(A) GSM

Commissioning Guide 6 Optional Commissioning Tasks

NOTE

The maximum Duration of the BIU loop test is the default value, which is 10s. In most cases, the default value is used.

Step 3 Click Start . The Confirm dialog box is displayed. Click Yes to perform the test. The result is displayed in the Test Result

area, as shown in Figure 6-4 .

If...

The BER is 0 per mille

Then...

The service channel is normal.

The BER is not 0 per mille The service channel is abnormal. Record the number of the faulty TRX, and contact Huawei BTS technical support engineers for troubleshooting.

NOTE

During the test, you can click Stop to stop the test. The Succeeded in stopping the TRX loop test.

message is displayed in the Test Result area.

Step 4 Repeat steps

Step 1

through Step 3 to perform the loopback test on the other channels.

----End

6.3 Checking the DIP Switch Settings of the Boards

This describes how to check whether the settings of the DIP switches on the board are correct.

You can perform this task by checking whether the attribute values corresponding to the DIP switches meet the actual requirements on the LMT.

Prerequisite l l

The BTS is in TDM transmission mode.

The transmission between the BSC and the BTS is normal.

Procedure

Step 1 Query the information of the GTMU: In the BSC6000 Local Maintenance Terminal window, select the target site. Right-click GTMU on the Site Device Panel tab page, and choose Query

Board Information . The Query Board Information dialog box is displayed.

Step 2 Click the Running Parameter tab, and then click Query on the Running Parameter tab page.

The query is successful, and the running status of the board is displayed in the dialog box.

Step 3 Check whether Attribute Value of E1/T1 Capability and Impedance Capability consistent with the actual condition, as shown in

Figure 6-5

.

l If the attribute values are consistent with the actual condition, end the task.

l If the attribute values are not consistent with the actual condition, see the BTS3900 Quick

Installation Guide or the BTS3900A Quick Installation Guide to set the corresponding DIP switches on the BTS side again.

Issue 02 (2009-04-20) Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd.

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