OptiX RTN 600 Equipment Commissioning

www.huawei.com

Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.

OptiX RTN 600 Equipment Commissioning

Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved. Page 2

Learning Guide Before studying this course, you are supposed to complete the

study on ： Basics of digital microwave communications or related kno

wledge OptiX RTN 600 Product Introduction OptiX RTN 600 Networking and Protection Mechanism


References Digital Microwave Communications Basics OptiX RTN 600 Radio Transmission System Configuration Guide OptiX RTN 600 Radio Transmission System Commissioning Guide


Objectives

Upon completion of this course, you will be able to:

Finish proper preparations before the commissioning Performing NE commissioning of the OptiX RTN 600 Performing hop commissioning of the OptiX RTN 600


Contents1. Preparations for the OptiX RTN 600

Commissioning

2. NE Commissioning of the OptiX RTN 600 3. Hop Commissioning of the OptiX RTN 600


Contents

1. Preparations for the OptiX RTN 600 Commissioning 1.1 Determining Commissioning Items 1.2 Preparing Related Documents 1.3 Preparing Related Tools 1.4 Checking Commissioning Conditions


Determining Commissioning Items1. NE Commissioning Items

Commissioning Item Optional/Required

Remarks

Powering on the equipment Required

If the fan is available in the equipment, check whether the fan is working or not after power on.

Testing indicators Required Check whether all indicators work normally or not.

Accessing the Web LCT Required

-

Configuring the data Required -

Performing the service loopback test Optional

If the instruments are available on site, it is recommended that you test this item.


Determining Commissioning Items (cont.)1. NE Commissioning Items (cont.)

Commissioning Item Optional/Required

Remarks

Testing E1 cables connections Optional It applies to the station where the

E1 service is accessed.Checking the receive and transmit power

of the optical interface

Optional

It applies to the station where the SDH optical interface service is accessed.

Testing the RF transmit power Required Use the Web LCT to query the RF

transmit power. Testing the

active/standby cross-connect board

switching

Required

It only applies to the equipment configured with the active and standby cross-connect boards.


2. Hop Commissioning ItemsCommissioning

ItemOptional/ Required

Remarks

Aligning the antenna Required -

Testing the ECC Required -

Testing the orderwire phone Optional

It is applicable when there is the order wire phone available between stations.

Testing all services Required

Test all service types turned up at the station like the E1, STM-1, and WS.

Determining Commissioning Items (cont.)


Commissioning Item

Optional/Required Remarks

Testing the clock tracing Required Check and ensure that the clock

source can be traced normally.

Testing the IF switching modes Required

It is applicable when the 1+1 HSB/FD/SD protection is configured.

Testing the SNCP switching Required It is applicable when the SNCP is

configured.

Testing the long-term BER Required

Generally perform the test for 24 hours according to the actual conditions

2. Hop Commissioning Items (cont.)

Determining Commissioning Items (cont.)


Preparing Related Documents The documents that are required include the engineering design d

ocuments and commissioning guide documents. Engineering design documents like ：

OptiX RTN 600 Radio Transmission System Network Planning Document OptiX RTN 600 Radio Transmission System Engineering Design Document

Commissioning guide documents like: OptiX RTN 600 Radio Transmission System Commissioning Guide OptiX RTN 600 Radio Transmission System Quick Installation and Commissi

oning Guide


Preparing Tools The tools that are required include the common tools, special tools and instruments. The recommended list is as follows:

Type Description

Commontool

Adjustable wrench, percussion drill, sharp-nose pliers, and electric knife

Special tool

Anti-static glove, ESD-preventive wrist strap, telescope, and intercom

Instrument

Multi-meter, BER tester, and laptop computer (installed with the Web LCT)


Checking Commissioning Conditions The NE commissioning conditions to be checked include the

status of the equipment as well as that of the laptop computer used in the commissioning. The NE commissioning conditions are listed as follows:

The hardware installation of the equipment must be complete, and it should pass the installation check.

The power supply of the equipment must be available. The service signal cables connected to other equipment must be

routed well. The laptop computer must be installed with the Web LCT, and

applications should work normally.


Checking Commissioning Conditions (cont.) The hop commissioning items to be checked include the NE

commissioning status as well as the weather conditions. The hop commissioning conditions are listed as follows:

The NE commissioning of the radio equipment at both ends of the same radio link must be complete.

The weather should be suitable, and there should no rain or fog between stations.

The on-site conditions and the personnel in charge of antenna commissioning must meet the requirement on the operation at a high altitude.


Summary This chapter describes the following contents:

NE commissioning items and hop commissioning items Documents and tools prepared before the

commissioning Commissioning conditions


Contents1. Preparations for the OptiX RTN 600 Commissioning2. NE Commissioning of the OptiX RTN 600

3. Hop Commissioning of the OptiX RTN 600


Contents2. NE Commissioning of the OptiX RTN 600

2.1 Powering On the Equipment 2.2 Testing Indicators 2.3 Accessing the Web LCT 2.4 Configuring the Data 2.5 Performing the Service Loopback test 2.6 Testing the Connections of the E1 Cables 2.7 Testing the Transmit and Receive Optical Power 2.8 Testing the RF Transmit Power 2.9 Testing the Active/Standby Cross-Connect Board Switching


Powering On the Equipment Prerequisites

The hardware installation of the equipment must be complete, and it should pass the installation check.

The input power must be available. The power switch of the input power (such as the power box

of the cabinet) must be turned off. Tools and Instruments

Multi-meter Procedure

Set the SYS-PWR switch on the PXC board to O. Set the ODU-PWR switch on the IF board to O. Turn on the input power switch of the cabinet.


Powering On the Equipment (cont.) testing the voltage and polarization of the input power at the

access point (such as the output terminal of the power box on the cabinet) by multi-meter. The voltage should range from -38.4 V to -72 V.

Set the SYS_PWR switch on the PXC board to “I”. If the fan is available, first check it is working normally after power

on. Wait for about 20 seconds, and then observe indicators of each

board installed in the IDU. The PROG indicator on the SCC board should be first on. After it

blinks and is lit green for some time, it should be off. For details on the board indicators, refer to the OptiX RTN 600

Radio Transmission System Product Description. Set the ODU-PWR switch on the IF board to “I”.

Note: The SYS-PWR and ODU-PWR switches on PXC and IF boards have the locking device. They need to be slightly pull out before switch them.


Testing Indicators Prerequisites

The equipment must be powered on for more than five minutes.

Tools and Instruments None.

Procedure Press the LAMP TEST button on the SCC

board, and indicators of all boards should be on.

Release the LAMP TEST button, and indicators of all boards should recover to the status before the LAMP TEST button is pressed.

LAMP TEST button


Accessing the Web LCT Prerequisites

The equipment must be powered on. Tools and Instruments

Laptop computer installed with the Web LCT Network cable

Procedure Start the laptop computer, and log in to the

operating system. Run the Web LCT program.

Connect the network port on the laptop computer to the ETH interface on the SCC board through the network cable. The green indicators of the ETH interface and network port should be on.

NM interface


Accessing the Web LCT (Cont.) Set the IP address information of the computer, and log in to the

NE. The IP address should comply with the following conditions: IP address: The IP address should be in the 129.9.0.0 network section

and should be different from the default IP address of the NE (129.9.191.240).

Subnet mask: 255.255.0.0. Default gateway: Null.

Enter in the Address bar of the IE the address of the server to be logged in. If the server is installed in the local computer, enter http://127.0.0.1:8080/nglct/, and click the Turn to button.

In the login interface of the Web LCT, enter the user name and corresponding password. Click Login. The default user name is admin, and the default password is T2000. If the user name and password are correct, the NE List page is displayed in the IE.

http://127.0.0.1:8080/nglct/


Configuring the Data Prerequisites

The documents that are required by data configuration must be available.

Tools and Instruments Web LCT

Procedure Before configuring the NE data, create the NE, log in and modify the

ID settings of the NE according to the requirements in the Network Planning Document.

The OptiX RTN 600 can be configured in two modes, General Mode and Wizard Mode. Users can choose the proper configuration mode depending on the specific configuration scenarios. For details, refer to the OptiX RTN 600 Radio Transmission System Configuration Guide.


Testing Transmit and Receive Optical Power Prerequisites

The service data must be configured. The 15-minute performance monitoring of the NE must be

started. The fiber connections must be normal.

Tools and Instruments Web LCT Fixed optical attenuator or variable optical attenuator

Procedure Disable the automatic laser shutdown (ALS) function of the

laser, and ensure that transmission of the laser is enabled. Query the 15-minute performance by using the Web LCT to

obtain the values of the transmit and receive optical power.


Testing the Transmit and Receive Optical Power (cont.)

Based on the queried values along with the specifications of optical modules, judge whether they are within the normal value range. The receive optical power should be 3 dB more than the minimum sensitivity and 5 dB less than the minimum overload provided in the specifications.

If the values are beyond the normal range, adjust the optical power by increasing or decreasing the number of attenuators to ensure that the receive and transmit optical power is within the normal value range.

Perform the loopback test for the services upon the completion of the optical power test. Ensure that no bit errors occur in five minutes.

Note: The attenuator should be connected to the receive end other than the transmit end.


Performing the Service Loopback Test Prerequisites

The Web LCT must be logged in to successfully and its connection to the NE must be normal.

The board must work normally. Tools and Instruments

Web LCT BER tester or SDH analyzer


Performing the Service Loopback Test (cont.)

Procedure Connect the board to be tested to the test instrument. Issue the loopback command and observe the instrument for

five minutes. The services should be normal. Repeat the above two steps to test each board. The service loopback for the IF board can only be

implemented by testing the services of other service boards. Adopt different loopback mode depending on the actually

used instrument. If the SDH analyzer is used to test the optical interface board,

first use the optical power meter to test the optical power before the test and use the attenuator to ensure that the optical power is within the normal range. This can protect the instrument and the board.


Testing E1 Cable Connections Prerequisites

The E1 port must be transferred through the DDF. The service data must be configured.

Tools and Instruments Web LCT BER tester

Procedure Connect the BER tester to the first E1 port of the OptiX RTN 600 at the DDF. Set the corresponding E1 port to outloop by using the Web LCT. Observe the BER tester. The AIS alarm displayed on the BER tester should be cleared.


Testing E1 Cable Connections (cont.) Release the outloop of the E1 port by using the Web LCT. Observe the BER tester. It should report the AIS alarm. Repeat the above five steps to test other E1 ports.

Tip Connect all E1 ports in a serial manner and set all of them to outloop by using the Web LCT. In this way, you can check whether all E1 ports are normal at the same time. If any fault occurs, you also need to locate it segmentally.


Testing the RF Transmit Power Prerequisites

The service data must be configured and the performance monitoring of the NE must be started.

The ATPC function must be disabled. Tools and Instruments

Web LCT Procedure

In the NE Explorer, select the ODU that requires querying the RF transmit power and query RF Transmit Power in the performance events.

Browse the performance events in the window. The difference between the queried value of the RF transmit power and the preset value should be less than 0.1 dB.

If the tested value is abnormal, contact Huawei for solutions.


Testing Active/Standby Cross-connect Board Switching Prerequisites

The service data must be configured. The 15-minute performance monitoring of the NE must be

started. The equipment must be configured with the active and

standby cross-connect boards. Tools and Instruments

Web LCT BER tester


Testing Active/Standby Cross-connect Board Switching (Cont.)

Procedure Confirm the current working status of active and standby PXC

boards and no abnormal alarms by using the Web LCT. Perform active/standby PXC board switching by Web LCT. Query the working status of the active and standby PXC boards

to check whether the switching is performed normally. Query the current and history alarms to check whether any

alarm is generated during the switching process. After the test, restore the PXC board in slot 1 to the active

board. Query the alarms and ensure that the cross-connect board works normally.

If you use the BER tester to monitor the services, few bit errors may occur during the switching process. The services, however, can recover immediately after the switching is complete.


Questions What is the procedure to access Web LCT?

How should the E1 port be set and connected for testing the connections of E1 cables? How to adopt the testing it quickly?

Why shall we disable the ATPC function when test RF transmit power?

What are the two modes in data configuration? What are the differences between them?


Summary This chapter describes the prerequisites, tools and instruments, and procedure for the NE commissioning items:

Powering on the equipment Testing indicators Accessing the Web LCT Configuring the data Testing the transmit and receive optical power Performing the service loopback test Testing the connections of E1 cables Testing the RF transmit power Testing the active/standby cross-connect board switching


Contents1. Preparations for the OptiX RTN 600 Commissioning2. NE Commissioning of the OptiX RTN 600 3. Hop Commissioning of the OptiX RTN 600


Table of Contents

3. Hop Commissioning of the OptiX RTN 600 3.1 Aligning the Antenna 3.2 Testing the ECC 3.3 Testing the E1 Service 3.4 Testing the WS Service 3.5 Testing the order wire 3.6 Testing the Clock Tracing 3.7 Testing the IF 1+1 Switching 3.8 Testing the SNCP Switching 3.9 Testing the 24-Hour BER


Aligning the Antenna Prerequisites

The NE commissioning of the radio equipment at both ends of the same radio link must be complete.

During the commissioning, the weather should be suitable and there should be no rain/fog between stations.

The on-site conditions and personnel in charge of the antenna commissioning must meet the requirements of operation at a high altitude.

Tools and Instruments Wrench, multi-meter and intercom.

Note: If there are 2 antennas at each site, it needs to align the main antennas and diversity antennas at both ends respectively. First align the main antennas and then the diversity antennas. Both antennas at local site should be aligned with the main antenna at opposite end.


Aligning the Antenna (cont.) Procedure

1. According to the designed received signal level (RSL) along with the relationship curve between the VBNC and RSL described in the user documents (shipped with the equipment) of the ODU, read the designed value of the VBNC.

2. Align the antennas at both ends approximately by using the specific tool (telescope) or instrument (COMPASS or GPS). If the antennas at both ends are not aligned approximately, the VBNC cannot be adjusted to the designed value.

3. Fix the antenna at the opposite end, and adjust the azimuth (elevation) of the antenna at the local end in a wide range. Use the multi-meter to observe the VBNC value of the ODU at the local end. At least three peak signals should be detected and the voltage of the peak signal in the middle should be maximum. When the VBNC reaches the maximum value, tighten the antenna. When the antenna is being tightened, keep that the VBNC is always the maximum.


Aligning the Antenna (cont.)4. As step 3, adjust the elevation (azimuth) of the antenna. And tighten it. 5. Tighten the antennas at the local end. Repeat steps 3 and 4 to adjust the antennas at the opposite end and tighten them. 6. Repeat steps 3 to 5 for two to four times. When the RSL of the antennas at the local end and the remote end reach the maximum value, tighten the antennas at both ends. 7. Test VBNC of ODUs at both ends by multi-meter. Read the actual receive

power level (RSL) by referring to the relationship curve between the VBNC and RSL for the ODUs at both ends. The difference between actual RSL value and it’s designed value should be ranged from -3 dB to +3 dB.

8. If the VBNC does not meet the above requirements, check whether the antennas at both ends are approximately aligned by referring to the step2. Also you can refer to the OptiX RTN 600 Radio Transmission System Maintenance Guide for solutions. 9. After antennas aligning is complete, tighten all screws of the antennas.


Testing the ECC Prerequisites

Antenna alignment must be complete.

The NE must have access to the Web LCT. Tools and Instruments

Web LCT Precautions

Test the ECC at one end of the radio link. Procedure

In the NE List page, click Add NE.


Testing the ECC (cont.) In the Add NE page, set the following attributes of the opposite NE: 　

ID: ID of the opposite NE Name: name of the opposite NE Extended ID: extended ID of the opposite NE Gateway Type: IP gateway Gateway IP Address: IP address of the local NE User Name: root (default) Password: password (default for the user root)

Click OK. In this case, a row of data for the newly added NE is added in the NE List page. Observe Login Status of the newly added NE. Login Status should be displayed as Logged In.


Testing the E1 Service Prerequisites

The E1 service must be available between stations and the service configuration at each station must be correctly delivered. Antenna alignment must be complete.

Tools and Instruments BER tester and Web LCT

Procedure At local site, connect the BER tester to the first E1 port. At remote site, loopback the first E1 port by cable. If cable loopback is unfeasible, set the software inloop for the first E1 port by Web LCT. Test the BER for 5 to 10 minutes by BER tester. No bit error should occur. Release all loopbacks. Repeat the above four steps to test other E1 ports one by one.


Testing the WS Service Prerequisites

The WS service must be configured. Antenna alignment must be complete.

Tools and Instruments BER tester

Procedure At local site, connect the BER tester to the WS port. At remote site, perform the hardware inloop for the WS port. Test the BER for 5 to 10 minutes by BER tester. No bit errors should occur. Release the loopback.


Testing the order wire Prerequisites

The order wire phone must be correctly installed at the station.

The data of the order wire must be configured. Antenna alignment must be complete.

Tools and Instruments None.

Procedure Check the status of the order wire at the local equipment side.

The status of the order wire should meet the following requirements:

The ringing switch must be set to ON. The dialing mode switch must be set to T, that is, the dual-tone

dialing mode is selected.


Testing the Order wire (cont.) Dial the order wire of the opposite equipment as follows:

Pick up the order wire, and press the TALK key on the front panel of the phone. The red indicator on the upper right side of the front panel is on, accompanied by the dial tone.

Dial the order wire number of the opposite equipment. Normally, the voice quality is good and the voice is clear.

Answer the order wire. The maintenance personnel at the opposite equipment side dials the order

wire of the local equipment. Normally, the order wire rings and at the same time the red indicator on the upper right side of the front panel is on.

Pick up the phone, and press the TALK key to talk. The red indicator on the upper right side of the phone is on. Normally, the voice quality is good and the voice is clear.


Testing the Clock Tracing Prerequisites

The clock tracing priority list must be configured. Tools and Instruments

Web LCT Procedure

Query the current clock priority table by using the Web LCT. According to the clock priority table, query whether the current

clock tracing source is traced normally. If the active and standby PXC boards are configured, perform the

active/standby switching. This operation can check whether the current clock source can be traced normally after the switching. After the test is complete, restore the PXC boards in slot1 as active board.


Testing the IF 1+1 Switching Prerequisites

The equipment must be configured with the IF 1+1 protection. Antenna alignment must be complete.


Note: The following procedure considers the E1 service between stations as an example. If no E1 service is configured between stations, perform the test through the configured WS service (only applicable in the SDH radio).


Testing the IF 1+1 Switching (cont.) Procedure

At local site, connect the BER tester to one E1 port. At remote site, loopback an E1 port by cable. Or set the software inloop on an E1 port by web LCT when cable loopback is unfeasible. Test the BER by BER tester. Confirm E1 service is normal. View the working status of the protection group by using the Web LCT. The Active Board of Device and Active Board of Channel should be the active IF board. Set the transmission status of the main ODU to mute by using the Web LCT or power off the main ODU. This can trigger the IF 1+1 switching. View the working status of the protection group after the switching by using the Web LCT. The Active Board of Device and Active Board of Channel should be the standby IF board. The HSB_INDI or HSM_INDI alarm should be reported.


Testing the IF 1+1 Switching (cont.) View the BER by Web LCT.

In the 1+1 HSB protection or 1+1 SD protection, service should recover after a transient interruption. In the 1+1 FD protection, service just has some bit errors without interruption.

After switching is complete, test the BER for 5 to 10 minutes. No bit errors should occur. Set the transmission status of the main ODU to unmute by using the Web LCT or powering on the main ODU. If the protection mode is set to Revertive mode, test the BER again by using the BER tester. When the restore time arrives, the result should indicate that the service has recovered after a transient interruption. WTR Time is set to 600s by default. Test the BER according to the requirements of the actual configuration.


Testing the SNCP Switching Prerequisites

The equipment must be configured with the SNCP protection. Antenna alignment must be complete.


Procedure At local site, connect the BER tester to one E1 port. At remote site, loopback the corresponding E1 port by cable. Or set

inloop on the E1 port by web LCT when cable loopback is unfeasible.

Test the BER by BER tester. Confirm E1 service is normal.


Testing the SNCP Switching (cont.) Check SNCP status of E1 service by Web LCT. And status should be normal. Trigger the SNCP switching by disconnecting the fiber connectors or powe

ring off the ODU in the working channel of the E1 SNCP service. View the abnormal events of the NE by Web LCT. The abnormal events of S

DH SNCP Switching are displayed in Abnormal Event List. View the BER test result. The result should indicate that the service has re

covered after a transient interruption. Reconnect the fiber connector or power on the ODU. In the Revertive mode, when the restore time arrives, the BER tester result

should indicate that the service has restored back. WTR Time is set to 600s by default.

Test the BER depending on the requirements of the actual configuration.


Testing the 24-Hour BER Prerequisites

Antenna alignment must be complete. Tools and Instruments

BER tester and Web LCT Precautions

If the 24-hour BER cannot be tested for each hop on the link because of the restrictions of the actual situation, choose the E1 service of the first node and terminal node of each link to perform this test. This operation ensures that the test path covers all the radio links.

The following test procedure considers the E1 service between stations as an example. If no E1 service is configured between stations, perform the test through the configured WS service (only applicable in the SDH radio).


Testing the 24-Hour BER (cont.) Procedure

At local site, extract several typical E1 services, and perform the hardware inloop for the E1 ports. If the hardware inloop is unfeasible, perform the software inloop for the E1 ports by using the Web LCT. At remote site, connect the E1 services in a serial manner at the DDF, and access them to the BER tester. Test the 24-hour BER by using the BER tester. Record the test result. The result should indicate that no bit errors occur.


Testing the 24-Hour BER (cont.)

Postrequisites If bit errors occur in the first 24-hour BER test, remove the

fault. Perform another 24-hour BER test until the test is passed.

If bit errors occur in the test for a serial connection, locate the fault by using the dichotomizing search or other methods until each channel passes the 24-hour BER test independently.


Questions What is the procedure to aligning antennas?

How long should it take to test the E1 service and WS service respectively by using the BER tester?

What alarms occur after the IF 1+1 switching is complete?

How can we ensure that SNCP switching is successful?

How should we handle bit errors occurring in the 24-hour BER test?


Summary The commissioning items in hop commissioning:

Aligning the antenna Testing the ECC Testing the E1 service Testing the WS service Testing the order wire Testing the clock tracing Testing the IF 1+1 switching Testing the SNCP switching Testing the 24-hour BER

Thank Youwww.huawei.com