14 Board Maintenance

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User ManualM900/M1800 Base Transceiver Station (BTS30) Table of Contents

Table of Contents

Chapter 7 Board Maintenance...................................................................................................... 7-1

7.1 Overview............................................................................................................................ 7-1

7.1.1 Board Maintenance Function .................................................................................. 7-1

7.1.2 Board Maintenance Operations .............................................................................. 7-2

7.2 Board Reset ....................................................................................................................... 7-4

7.3 OpStart Board.................................................................................................................... 7-5

7.4 Board Self-test ................................................................................................................... 7-5

7.5 Change Board Administrative State................................................................................... 7-6

7.6 Board Information .............................................................................................................. 7-7 7.7 Loop Test ........................................................................................................................... 7-7

7.8 Board Alarm....................................................................................................................... 7-8

7.9 MCK Clock Operation........................................................................................................ 7-9

7.10 Set MDC Parameters..................................................................................................... 7-10

7.11 CDU Operation .............................................................................................................. 7-11

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User ManualM900/M1800 Base Transceiver Station (BTS30) Chapter 7 Board Maintenance

Chapter 7 Board Maintenance

7.1 Overview

7.1.1 Board Maintenance Function

Visual and direct maintenance is achieved with the BTS terminal maintenance

console. Double click on [Board/BoardAdm] in the maintenance console, and the

interface for board maintenance will pop up, as shown in Figure 7-1.

Hardware configurations (as in the Slot Description table) set by the BSC for a site

are displayed in this interface, and the No., name and status of the boards can be

obtained from the display.

Operations can be performed in this interface. Select and right click on the icon of

the board to be operated on, and execute the menu command you desire from the

floating menu that pops up. Note that different maintenance commands apply to

different boards.

Figure 7-1Board operation


7-1




7.1.2 Board Maintenance Operations

There are unified operation procedures for board maintenance: 1) Activate board

maintenance interface. 2) Right click on the icon of the board to be operated on. 3)Select the corresponding function in the pop-up menu.

The TRX maintenance menu is as shown in Figure 7-2.

The TMU maintenance menu is as shown in Figure 7-3.

The CDU maintenance menu is as shown in Figure 7-4.

The PMB maintenance menu is as shown in Figure 7-5.

Figure 7-2TRX maintenance menu


7-2




Figure 7-3TMU maintenance menu

Figure 7-4CDU maintenance menu


7-3




Figure 7-5PMB maintenance menu

7.2 Board Reset

I. Function

To reset boards, i.e., to reinitialize the corresponding boards.

Please note that the resetting of a board may affect the sessions of the subscribers.

Therefore, care should be taken with this function.

II. Access

Select [Reset] in the board operation menu, and the result will be displayed in the

pop-up interface, as shown in Figure 7-6.

Figure 7-6Board reset


7-4




7.3 OpStart Board

I. Function

To put the data configurations of the objects into effect.

II. Access

Select [OpStart] in the board operation menu, and the operational results will be

displayed in the pop-up interface, as shown in Figure 7-7.

Figure 7-7OpStart Board

7.4 Board Self-test

I. Function

The board tests by itself if the board software is running normally.

II. Access

Select [Test] in the operation menu, and the test results will be displayed in the

pop-up interface, as shown in Figure 7-8.

Figure 7-8Board self-test


7-5




7.5 Change Board Administrative State

I. Function

The meaning of the operations on the TRX board administrative state is the same as

on the BT administrative state in the logic object operations. In board operations,

operations on the administrative state of the channel of the BT corresponding to the

TRX can also be performed. And it also means the same as with the operations on

the administrative state of channel objects.

II. Access

To operate on the administrative state of the logic object: Right click on the icon of

the board, and select [Administrative State/Locked] or [Administrative State/Unlocked] .

To operate on a certain channel of the logic object: Right click on the icon of the

board, and select [Administrative State/Block Channel] , and select the channel to

be operated on.

See Figure 7-9.

Figure 7-9Change board administrative state


7-6




7.6 Board Information

I. Function

To query the software version and the number of alarms generated during board

maintenance.

II. Access

Right click on the icon of the board, and select Board Information . The result ofthe query will be displayed in the pop-up interface, as shown in Figure 7-10.

Figure 7-10Board information

7.7 Loop Test

I. Function

To test if the link between the board and the TMU is normal.

The initialization and maintenance of the boards in BTS are accomplished with the

TMU, the BTS operation and maintenance unit, therefore links between the boards

and the TMU are very important.

II. Access

Right click on the icon of the board, and select [Loop Test] . The interface [Loop

Test] will pop up, as shown in Figure 7-11.


7-7




Figure 7-11Board loop test

III. Interface description

For the description of the interface [Loop Test] , see Table 7-1.

Table 7-1 Description of the interface [Loop Test]

Field Description Value range

Data Length Valid single-frame data length of the loop test command issued bythe TMU to the board. 1 ~ 220

Initial Data Valid initial data of the loop test command issued by the TMU to theboard. 0 ~ 255

Data StepLength

Data increment length of the loop test command issued by the TMUto the board. 0 ~ 255

7.8 Board Alarm

I. Function

BTS reports on the abnormality that occurs during BTS operation it to the BSC side

in the form of an alarm.

The maintenance personnel can observe the real-time alarms through the alarm

message window at the maintenance terminal of the BTS to facilitate the

maintenance operations. They can also obtain information on alarms by querying

them.


7-8




II. Access

Right click on the icon of the board, and select [Board Alarm] . The interface [Board

Alarm Information] will pop up. On the left of this window is a visual diagram for

board alarms, where each grid stands for an alarm. If the grid is green, the

corresponding board is normal, while if red, the board is faulty. In this case, click the

grid that is red, and a detailed explanation of the alarm will be displayed in the

sub-window on the right of the interface, as shown in Figure 7-12.

Figure 7-12Board alarm information

7.9 MCK Clock Operation

I. Function

The BTS clock can work both in the mode of internal clock (free-run mode), external

clock (phase-locked mode) and external synchronization clock. The selection of theoperational mode of the BTS clock can be done through TMU maintenance.

II. Access

In the TMU maintenance menu, select [Set CLK Hardware Parameters] , then

select the clock mode and input the parameters in the pop-up interface. Then click

<OK> , and the operational result will be displayed in the window, as shown in Figure

7-13.


7-9




Figure 7-13Select the MCK clock mode


For the description of the above interface, see Table 7-2.

Table 7-2 MCK clock mode selection

Field Description Value range

Clock modeInternal clock: the BTS clock unit works in free-run mode and cannot ensure the synchronization with the network clock.

External clock: the BTS clock unit works in phase-locked mode,and is in synchronization with the network clock.

Set DAC This parameter is an adjustment of the crystal oscillation voltage. 0000~4095 (decimal)

7.10 Set MDC Parameters

I. Function

To set the CDU parameters of the BTS antenna and feeder part in board

maintenance.

II. Access

In the CDU maintenance menu (refer to section 7.1), select [Set MDC Parameters] ,

input appropriate parameters in the pop-up interface, click <OK> , and the

operational result will be displayed in the status bar, as shown in Figure 7-14.


7-10




Figure 7-14Set MDC parameters


For the description of the above interface, see Table 7-3.

Table cription of the interf Parameters]

Value range

7-3 Des ace [Set MDC

Field Description

Device type ); HYCM( combiner); SPL (splitter)CDU( combiner and splitter

Subroute No. Tributary No. of uplink signal plifier; 1: diversitymplifier

0: main tower top amtower top a

Attenuation value Power attenuation for the uplink signal 0 ~ 15 dB

7.11 CDU Operation

I. Function

control function for switching on/off the tower top amplifier in CDU

maintenance.

II. Access

the operational result will be

displayed in the status bar, as shown in Figure 7-15.

To provide the

In the CDU maintenance menu, select [CDU Operation] , select the operation to be

performed in the pop-up interface, click <OK> , and


7-11




Figure 7-15CDU operation


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14 Board Maintenance

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