130363315 zxmw nr8250 v1!00!020 digital microwave transmission system commissioning guide

ZXMW NR8250Digital Microwave Transmission System

Commissioning Guide

Version: V1.00.020

ZTE CORPORATIONNO. 55, Hi-tech Road South, ShenZhen, P.R.ChinaPostcode: 518057Tel: +86-755-26771900Fax: +86-755-26770801URL: http://ensupport.zte.com.cnE-mail: [email protected]

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Revision History

Revision No. Revision Date Revision Reason

R1.0 2011–11–15 First edition

Serial Number: SJ-20110920155816-006

Publishing Date: 2011–11–15 (R1.0)

ContentsAbout This Manual ......................................................................................... I

Chapter 1 Commissioning Preparations.................................................. 1-11.1 Required Tools and Instruments .......................................................................... 1-1

1.2 Power-on .......................................................................................................... 1-3

1.3 Configuring System Data .................................................................................... 1-4

Chapter 2 Commissioning Process.......................................................... 2-12.1 NE Networking Modes ........................................................................................ 2-1

2.2 Adjusting Antennas at Both Ends ........................................................................ 2-2

2.3 Testing STM–1/4 Service .................................................................................... 2-3

2.4 Testing Inter-Site E1 Service ............................................................................... 2-7

2.5 Testing Inter-Site ETH Service .......................................................................... 2-10

2.6 Testing Inter-Site EOW Service ......................................................................... 2-12

2.7 Testing 1+1 Changeover ................................................................................... 2-12

2.8 Testing SNCP Changeover ............................................................................... 2-17

2.9 Testing E1 Cable Connection ............................................................................ 2-22

Glossary .......................................................................................................... I

I

About This ManualPurpose

This manual gives the commissioning guide to ZXMW NR8250 Digital Microwave system.

Intended Audience

l Software commissioning engineersl System commissioning engineers

What Is in This Manual

This manual contains the following chapters:

Chapter Summary

Chapter 1, Commissioning

Preparations

Describes necessary preparations before the commissioning of

NR8250.

Chapter 2, Commissioning

Process

Describes the NR8250 networking modes and link commissioning

methods.

Conventions

This document uses the following typographical convention.

Symbol Meaning

Note: Provides additional information about a certain topic.

I

Chapter 1Commissioning PreparationsTable of Contents

Required Tools and Instruments .................................................................................1-1Power-on ...................................................................................................................1-3Configuring System Data............................................................................................1-4

1.1 Required Tools and InstrumentsTools and instruments for system commissioning must pass authorized validity check andbe prepared ahead of time. Table 1-1 lists the commonly used tools and instruments.

Table 1-1 Tools and Instruments

Name Appearance

Cross screwdriver

Straight screwdriver

BER tester

Multimeter

1-1

SJ-20110920155816-006|2011–11–15 (R1.0) ZTE Proprietary and Confidential

ZXMW NR8250 Commissioning Guide

Name Appearance

Compass

Commissioning computer

or

Straight-through or cross-over cable

16–way E1 cable (120Ω)




1-2


Chapter 1 Commissioning Preparations

Name Appearance

16–way loopback head

8–way loopback head

1.2 Power-onThe whole power-on process includes checking before power-on, power-on, and checkingafter power-on.

Prerequisite

The equipment has been installed.

Steps

1. Check the following items before power-on:

a. Check that the voltage of the power supply is proper with correct polarity.

b. Check that the antenna feeder is correctly installed.

c. Check that the rack, antenna feeder, and lightning protector are properlygrounded.

2. Power on the ZXMW NR8250 by performing the following steps:

a. Ensure that all modules are powered off. Connect one end of the power cable tothe RPUA and PM3 interfaces of IDU. Connect the other end to the external powercabinet or air switch.

b. Switch the power of power cabinet or air switch to "ON".

c. Turn on the PM3 power switch.

d. Turn on the power switches of each RMU board.

3. After powering on the equipment, check the IDU power status to ensure that the RUNindicator of each IDU board is in normal status.

– End of Steps –

1-3



1.3 Configuring System DataThrough the LMT, configure NR8250 NE information, boards, time clock, radio link,and TDM/Ethernet/EOW service data. For detailed information about the operationprocedures, refer to ZXMWNR8250Digital Microwave Transmission SystemConfigurationGuide.

1-4


Chapter 2Commissioning ProcessTable of Contents

NE Networking Modes................................................................................................2-1Adjusting Antennas at Both Ends ...............................................................................2-2Testing STM–1/4 Service............................................................................................2-3Testing Inter-Site E1 Service ......................................................................................2-7Testing Inter-Site ETH Service..................................................................................2-10Testing Inter-Site EOW Service ................................................................................2-12Testing 1+1 Changeover ..........................................................................................2-12Testing SNCP Changeover.......................................................................................2-17Testing E1 Cable Connection ...................................................................................2-22

2.1 NE Networking ModesFigure 2-1 shows the diagram of chain networking.

Figure 2-1 Chain Networking

Figure 2-2 shows the diagram of ring networking.

Figure 2-2 Ring Networking

Figure 2-3 shows the diagram of tree networking.

2-1



Figure 2-3 Tree Networking

Note:

An NE in the figure refers to an IDU+ODU.

2.2 Adjusting Antennas at Both EndsAdjusting antennas at both ends is the most important testing item in inter-linkcommissioning. This adjustment directly influences the microwave link's performance.

Prerequisite

l The single-site commissioning for microwave devices at both ends of the microwavelink has been completed.

l During the commissioning, the weather is fine between the two sites, without rain,snow, or fog.

l The actual conditions and antenna commissioning personnel meet the requirementfor working at high altitudes.

Steps

1. If the distance between the two sites is larger than 2 km, set the antennas horizontally.If the distance is comparatively short, adjust the antenna's downtilt within a small rangeaccording to actual condition.

2. Connect the multimeter with the local ODU’s BNC port correctly.

2-2


Chapter 2 Commissioning Process

3. Adjust the antenna’s horizontal position: fix the remote antenna, use the multimeterto measure the voltage at the BNC port, rotate the antenna in horizontal direction,and make sure that at least three peak signals of BNC are scanned within the rotatingrange, of which the middle one has the highest voltage.

4. Adjust the antenna's downtilt: Adjust the antenna’s downtilt at each position whenBNC port has the peak voltage to make the voltage at NMC port reach the highestvalue within the scanning range. Adjust the antenna to the position where BNC hasthe highest voltage.

5. Adjust the remote antenna. Make the remote receiving level have the highest value.

6. Repeat the steps 1 through 5 for two to four times to make the receiving level at boththe local end and the remote end have the largest value. Fix the antennas at bothends.

7. Use the multimeter to test the voltage at BNC port at both ends (switch the voltageside to DC 20 V. Contact the black probe with the outer of BNC and the red probe withthe inner BNC). Read the current receiving power according to voltage at BNC port ofODU at both ends and the Received Signal Level (RSL) curve.

8. Tighten all screws of the antenna support.


2.3 Testing STM–1/4 ServiceThis section describes how to verify the availability of STM-1/4 service if the service isavailable.

Prerequisite

l Antenna adjustment at both ends is completed.l There is STM-1/4 service between two sites.

Steps

1. Connect the device with the commissioning PC and set the corresponding IP address,as shown in Figure 2-4.

Figure 2-4 Connection Diagram for STM–1/4 Service Environment

2. Configure the IDU boards, as shown in Figure 2-5.

a. Connect the IF interface of the RMU board to the ODU through a cable.

2-3



b. Connect the receiving end and transmitting end of the bit error tester to thetransmitting end and receiving end of the local optical module respectively.

Note:

The optical modules used for STM-1 and STM-4 services are different:

STM-4 service uses a 622 M optical module.

STM-1 service uses a 622 M or 155 M optical module.

c. Use a fiber to perform loopback for the opposite end.

Figure 2-5 Configuring STM-1/4 Service Test

3. Enter the IDU’s IP address on the address bar of the browser and open theconfiguration page through LMT.

4. Select Configure > Shelf Configure on the topology tree. The Shelf Configure pageappears.

5. Based on the actual situation, configure the types of the boards in the shelf, as shownin Figure 2-6 and Figure 2-7.

Figure 2-6 An Example of STM-1 Service Configuration

2-4



Figure 2-7 An Example of STM-4 Service Configuration

6. On the topology tree, select Configure > Radio Link, as shown in Figure 2-8.

Figure 2-8 Radio Link Node

7. Set the required parameters in the Work Mode area, as shown in Figure 2-9.l Set TDM Mode to 1_STM1.l Set Bandwidth to 28 M.l Set Modulation Mode to 128QAM.

Figure 2-9 Setting Work Mode

8. Click Apply.

9. In the Set ODU Parameter area, set the TX frequency and TX frequency, as shownin Figure 2-10.

2-5



Figure 2-10 Setting ODU Parameters

10. Click Apply.

11. On the topology tree, select Configure > TDM Traffic > Cross Connect, as shownin Figure 2-11.

Figure 2-11 Cross Connect Node

12. In the P2P Configure area, configure the routes from the RTUB board at slot 2 tothe RMU board at slot 5. Select VC4 for Cross Level and Bidirectional for CrossDirection, as shown in Figure 2-12.

2-6



Figure 2-12 Configuring TDM Service P2P Route

13. Click Add.

14. Select the route and click Activate.

15. Check whether the link communication is normal. Use a bit error tester to test the BER.


Follow-Up ActionTo configure 1+1 protection, use two RMU boards to connect the two ODUs respectivelyduring IDU configuration. One operates in active mode and the other operates in standbymode.

2.4 Testing Inter-Site E1 ServiceThis section describes how to verify the availability of E1 service if the service is availablebetween two sites.

Prerequisite

l Antenna adjustment at both ends is completed.l There is E1 service between two sites.

Steps1. Connect the device with the commissioning PC and set the corresponding IP address,

as shown in Figure 2-13.

Figure 2-13 E1 Service Environment

2-7



2. Configure the IDU boards and connect related cables, as shown in Figure 2-14.

a. Connect the IF interface of the RMU board to the ODU through a cable.

b. Connect the receiving end and transmitting end of the bit error tester to thetransmitting end and receiving end of the local IO conversion board respectively.

c. Use loopback heads to perform loopback for the receiving end and transmittingend of the opposite IO conversion board.

Figure 2-14 E1 Service Testing Configuration

3. Enter the IDU’s IP address on the address bar of the browser. The page for configuringsystem work mode is opened through LMT.

4. Select Configure > Radio Link on the topology tree, as shown in Figure 2-15.


5. Set the parameters in the Work Mode area.l Set TDM Mode to 4_E1.l Set Bandwidth to 14 M.l Set Modulation Mode to 64QAM.

6. Click Apply.

7. In the Set ODU Parameter area, set the TX frequency and TX power, as shown inFigure 2-16.

2-8




8. Click Apply.

9. On the topology tree, select Configure > TDM Traffic > Cross Connect, as shownin Figure 2-17.


10. In the P2P Config area, configure the route from the RTUA board at slot 3 to the RMUboard at slot 5. Select VC12 for Cross Level and Bidirectional for Cross Direction.Set the source port number and destination port number to the same value, as shownin Figure 2-18.

2-9




11. Click Add.

12. Select one or more routes and click Activate.

13. Check whether the link communication is normal. Use a bit error tester to test the BER.


2.5 Testing Inter-Site ETH ServiceIf Ethernet service is available between sites, you can verify the service availability throughtesting the Ethernet service. To facilitate on-site commissioning, use the ping packagemethod, which is simple and requires no additional equipment.

Prerequisite

The Ethernet service is configured between two sites.

If the device operates in VLAN mode, ensure that the connected Ethernet port of thecomputer is in Access mode, the air interfaces of the devices at both ends are in Trunkmode, and correct VLAN ID is configured.

Steps

1. Set up the test environment, as shown in Figure 2-19. Set the corresponding IPaddress.

Figure 2-19 Test Environment

2. Use a cross-connect Ethernet cable to connect a port of Ethernet service at the localend with the commissioning computer.

2-10



3. On the commissioning computer, select Start > Run. In the pop-up Run dialog box,type cmd. Then, click OK.

4. In the displayed MS-DOS window, run the command ping 193.254.1.2 -n 20, where193.254.1.2 refers to the IP address of the IDU at opposite end.

If the system displays Reply from..., as shown in Figure 2-20, it indicates that theEthernet service is connected.

Figure 2-20 Connected Ethernet Service

If the system displays Request timed out, as shown in Figure 2-21, it indicates thatthe Ethernet service is not connected.

Figure 2-21 Blocked Ethernet Service

5. After the ping command is executed, check the transceiving data statistics. If thestatistic data contains Lost=0 (0% loss), as shown in Figure 2-22, it indicates that nopackage is lost.

Figure 2-22 Packet Loss Check


2-11



2.6 Testing Inter-Site EOW ServiceThis test is performed when an Engineering Order Wire (EOW) phone is installed at thesite. It helps verify whether the EOW phone works normally.

Prerequisite

l Antenna adjustment at both ends is completed.l There is an EOW phone on the site.l In Web LMT system, the transmit units are enabled in the EOW Configure page.

Proper configurations at local end and opposite end are completed.

Steps

1. Pick up the local phone directly and press the EOW calling button on the RCUA boardto call the opposite device. The buzzer on the opposite device beeps.

2. The receiving party picks up the phone. If the talk is clear, it indicates the EOW serviceis normal.


2.7 Testing 1+1 ChangeoverThis section describes how to verify the 1+1 changeover function if this function isconfigured.

This section takes E1 service as an example. Assume that the device uses theconfiguration shown in Figure 2-23.

Figure 2-23 1+1 Protection Configuration

Prerequisite

Antenna adjustment at both ends is completed.

Steps

1. Set up the test environment, as shown in Figure 2-24.

2-12



Figure 2-24 Test Environment

a. Connect a 16-way E1 loopback head to the E1 port of the RTUA at the remoteequipment.

b. Connect a 16-way E1 line to the local RTUA.

c. Connect the input/output port of the E1 cable with the corresponding ports of thebit error tester.


3. Configure the shelf.

a. Select Configure > Shelf Configure on the topology tree, as shown in Figure2-25.

Figure 2-25 Shelf Configure Node

b. In the Shelf Configure page, configure the boards according to the actualconfiguration. The transmit unit numbers of two mutually protected RMUB boardsmust be the same, as shown in Figure 2-26.

2-13



Figure 2-26 Configuring the Shelf

Note:

For 1+1 protection, one transmit unit has two slot numbers. The active slot isuser-defined. The ODU connected to the active slot is the active ODU and theODU connected to the standby slot is the standby ODU.

The mutually-protected RMUB slots are in pairs. That is, slot 3 and slot 4, slot 5and slot 6, and slot 7 and slot 8 form a pair respectively.

c. Click Apply.

4. Configure radio link.

a. On the topology tree, select Configure > Radio Link, as shown in Figure 2-27.


b. In the Work Mode area, set TDM Mode to 16_E1, Bandwidth to 7 M, andModulation Mode to 128QAM, as shown in Figure 2-28.

2-14




c. Click Apply.

d. In the Set Protection Parameter area, set Protection Type to HSB or SB, andProtection Mode to Automatic, as shown in Figure 2-29.

Figure 2-29 Setting Protection Parameters

e. Click Apply.

5. Set the cross connection.

a. On the topology tree, selectConfigure > TDMTraffic >CrossConnect, as shownin Figure 2-30.

2-15




b. In the P2P Config area, set the parameters, as shown in Figure 2-31.l Set Cross Level to VC12.l Set Cross Direction to Bidirectional.l Set the Shelf of both Source and Destination to 1.l Set the Transmit Unit No. of Source to RTUA slot No.l Set the Transmit Unit No. of Destination to the transmit unit No. of RMUB

with 1+1 protection.l Set the Port No. of Source and Destination to 1–16 to add 16 routes at a

time.

2-16




c. Click Add.

d. Select one or more routes and click Activate.

6. Start the bit error tester. Ensure that the tester generates no alarm.

7. Switch off the active ODU power supply.

8. Check the bit error test result, which should show that the service is restored afterbeing interrupted instantaneously.

9. After the changeover is completed, test the bit error for five to ten minutes. The testresult should be no bit error.


2.8 Testing SNCP ChangeoverThis section describes how to verify the SNCP changeover if this function is configured.

This section takes E1 service as an example. Assume that the device uses theconfiguration shown in Figure 2-32.

Figure 2-32 SNCP Changeover Configuration

2-17



Prerequisite

l The equipment is configured with two IDUs. Each IDU is configured with two RMUBsand two ODUs.

l Antenna adjustment at both ends is completed.

Steps

1. Set up the test environment, as shown in Figure 2-33.

Figure 2-33 Testing Environment

a. Connect an E1 loopback head to the E1 port of the RTUB at the remote equipment.

b. Connect an E1 line to the local RTUB.

c. Connect the input/output port of the E1 cable with the corresponding ports of thebit error tester.


3. Configure the rack.

a. Select Configure > Shelf Configure on the topology tree, as shown in Figure2-34.

Figure 2-34 Shelf Configure Node

2-18



b. In the Shelf Configure page, cnfigure the board types based on the actualconfiguration. The transmit unit numbers of the two RMUB boards must bedifferent, and the RTUB is set to transparent mode, as shown in Figure 2-35.

Figure 2-35 Shelf Configuration

c. Click Apply.

4. Configure the radio link.

a. On the topology tree, select Configure > Radio Link, as shown in Figure 2-36.


b. In the Work Mode area, set Work Mode to 1_STM-1, Bandwidth to 28 M, andModulation Mode to 128QAM, as shown in Figure 2-37.


2-19



c. Click Apply.

d. Set Protection Type to No Protection, as shown in Figure 2-38.

Figure 2-38 Setting Protection Parameters

e. Click Apply.

f. In the Set ODU Parameter area, set the transmitting frequency and transmittingpower, as shown in Figure 2-39.


g. Click Apply.

5. Set SNCP route.

a. On the topology tree, selectConfigure > TDM Traffic > SNCP, as shown in Figure2-40.

2-20



Figure 2-40 SNCP Node

b. In the Configure TDM SNCP area, click Add to add SNCP service routingconfiguration, as shown in Figure 2-41.

Figure 2-41 Configuring TDM Service SNCP

c. Click Activate. Check whether the system applies the new SNCP service routeconfiguration.

6. The bit error tester starts running. Keep the tester working for three to eight minutesand ensure that there is no bit error.

7. Switch off the ODU power of the working transmit unit. Check the bit error test result.

2-21



The test result should show that the service is restored after being interruptedinstantaneously.

8. After the changeover is completed, perform the bit error test for five to ten minutes.The test result should be no bit error.

9. Switch on the ODU power of the working transmit unit again. Switch off the ODU powerof the protection transmit unit.

10. Check the bit error test result. The test result should show that the service is restoredafter being interrupted instantaneously.


2.9 Testing E1 Cable ConnectionBy testing the E1 cable connection, you can check whether the E1 cable is normal andproperly connected to the equipment.

Prerequisite

l The equipment is configured with the E1 interface board.l Service data has been configured.

Steps

1. Connect the E1 interface to the error bit tester. The error bit tester displays the AISalarm.

2. Set the corresponding E1 interface as terminal loopback through WEB LMT.

Observe the error bit tester. The AIS alarm should disappear.

3. Cancel the terminal loopback setting of the current E1 interface through WEB LMT.

Observe the error bit tester. The AIS alarm should be reported.

4. Repeat steps 1 to 5 to test other E1 interfaces.


2-22


GlossaryIDU- Indoor Unit

LMT- Local Maintenance Terminal

ODU- Outdoor Unit

PM- Power Module

RCUA- Radio Core Cross Unit A

RMU- Radio Modulation Unit

RMUB- Radio Modem Unit B

RPUA- Radio Power Unit A

RTUB- Radio Traffic Unit B

SNCP- Sub-Network Connection Protection

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130363315 zxmw nr8250 v1!00!020 digital microwave transmission system commissioning guide

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