130363315-zxmw-nr8250-v1-00-020-digital-microwave-transmission-system-commissioning-guide.pdf

ZXMW NR8250 Digital Microwave Transmission System

Commissioning Guide Version: V1.00.020

ZTE CORPORATION NO. 55, Hi-tech Road South, ShenZhen, P.R.China Postcode: 518057 Tel: +86-755-26771900 Fax: +86-755-26770801 URL: http://ensupport.zte.com.cn E-mail: [email protected]

LEGAL INFORMATION Copyright © 2011 ZTE CORPORATION. The contents of this document are protected by copyright laws and international treaties. Any reproduction or distribution of this document or any portion of this document, in any form by any means, without the prior written consent of ZTE CORPORATION is prohibited.

Additionally, the contents of this document are protected by

contractual confidentiality obligations. All company, brand and product names are trade or service marks, or registered trade or service marks, of ZTE CORPORATION or of their respective owners. This document is provided “as is”, and all express, implied, or statutory warranties, representations or conditions are disclaimed, including without limitation any implied warranty of merchantability, fitness for a particular purpose, title or non-infringement. ZTE CORPORATION and its licensors shall not be liable for damages resulting from the use of or reliance on the information contained herein. ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering the subject matter of this document. Except as expressly provided in any written license between ZTE CORPORATION and its licensee, the user of this document shall not acquire any license to the subject matter herein. ZTE CORPORATION reserves the right to upgrade or make technical change to this product without further notice. Users may visit ZTE technical support website http://ensupport.zte.com.cn to inquire related information. The ultimate right to interpret this product resides in ZTE CORPORATION.

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)

Contents About This Manual ......................................................................................... I Chapter 1 Commissioning Preparations .................................................. 1-1 1.1 Required Tools and Instruments .......................................................................... 1-1 1.2 Power-on .......................................................................................................... 1-3 1.3 Configuring System Data .................................................................................... 1-4

Chapter 2 Commissioning Process .......................................................... 2-1 2.1 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

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

Intended Audience l l

Software commissioning engineers System commissioning engineers

What Is in This Manual This manual contains the following chapters: Chapter

Summary

Chapter 1, Commissioning

Describes necessary preparations before the commissioning of

Preparations

NR8250.

Chapter 2, Commissioning

Describes the NR8250 networking modes and link commissioning

Process

methods.

Conventions This document uses the following typographical convention. Symbol

Meaning

Note: Provides additional information about a certain topic.

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Chapter 1

Commissioning Preparations Table of Contents Required Tools and Instruments .................................................................................1-1 Power-on ...................................................................................................................1-3 Configuring System Data............................................................................................1-4

1.1 Required Tools and Instruments Tools and instruments for system commissioning must pass authorized validity check and be 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

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Name

Appearance

Compass

Commissioning computer

or Straight-through or cross-over cable

16–way E1 cable (120Ω)

16–way E1 cable (75Ω)

8–way E1 cable (120Ω)

8–way E1 cable (75Ω)

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Name

Appearance

16–way loopback head

8–way loopback head

1.2 Power-on The whole power-on process includes checking before power-on, power-on, and checking after 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 properly grounded. 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 to the RPUA and PM3 interfaces of IDU. Connect the other end to the external power cabinet 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 RUN indicator of each IDU board is in normal status. – End of Steps – 1-3 SJ-20110920155816-006|2011–11–15 (R1.0)

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1.3 Configuring System Data Through the LMT, configure NR8250 NE information, boards, time clock, radio link, and TDM/Ethernet/EOW service data. For detailed information about the operation procedures, refer to ZXMW NR8250 Digital Microwave Transmission System Configuration Guide.

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Chapter 2

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

2.1 NE Networking Modes Figure 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.

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Figure 2-3 Tree Networking

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

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

Prerequisite l l l

The single-site commissioning for microwave devices at both ends of the microwave link has been completed. During the commissioning, the weather is fine between the two sites, without rain, snow, or fog. The actual conditions and antenna commissioning personnel meet the requirement for 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 range according to actual condition. 2. Connect the multimeter with the local ODU’s BNC port correctly.

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3. Adjust the antenna’s horizontal position: fix the remote antenna, use the multimeter to 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 rotating range, of which the middle one has the highest voltage. 4. Adjust the antenna's downtilt: Adjust the antenna’s downtilt at each position when BNC port has the peak voltage to make the voltage at NMC port reach the highest value within the scanning range. Adjust the antenna to the position where BNC has the 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 both the local end and the remote end have the largest value. Fix the antennas at both ends. 7. Use the multimeter to test the voltage at BNC port at both ends (switch the voltage side to DC 20 V. Contact the black probe with the outer of BNC and the red probe with the inner BNC). Read the current receiving power according to voltage at BNC port of ODU at both ends and the Received Signal Level (RSL) curve. 8. Tighten all screws of the antenna support. – End of Steps –

2.3 Testing STM–1/4 Service This section describes how to verify the availability of STM-1/4 service if the service is available.

Prerequisite l l

Antenna adjustment at both ends is completed. 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 SJ-20110920155816-006|2011–11–15 (R1.0)

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b. Connect the receiving end and transmitting end of the bit error tester to the transmitting 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 the configuration page through LMT. 4. Select Configure > Shelf Configure on the topology tree. The Shelf Configure page appears. 5. Based on the actual situation, configure the types of the boards in the shelf, as shown in Figure 2-6 and Figure 2-7. Figure 2-6 An Example of STM-1 Service Configuration

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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 shown in Figure 2-10. 2-5 SJ-20110920155816-006|2011–11–15 (R1.0)

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Figure 2-10 Setting ODU Parameters

10. Click Apply. 11. On the topology tree, select Configure > TDM Traffic > Cross Connect, as shown in 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 to the RMU board at slot 5. Select VC4 for Cross Level and Bidirectional for Cross Direction, as shown in Figure 2-12.

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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. – End of Steps –

Follow-Up Action To configure 1+1 protection, use two RMU boards to connect the two ODUs respectively during IDU configuration. One operates in active mode and the other operates in standby mode.

2.4 Testing Inter-Site E1 Service This section describes how to verify the availability of E1 service if the service is available between two sites.

Prerequisite l l

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

Steps 1. 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

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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 the transmitting end and receiving end of the local IO conversion board respectively. c. Use loopback heads to perform loopback for the receiving end and transmitting end 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 configuring system work mode is opened through LMT. 4. Select Configure > Radio Link on the topology tree, as shown in Figure 2-15. Figure 2-15 Radio Link Node

5. Set l l l

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

6. Click Apply. 7. In the Set ODU Parameter area, set the TX frequency and TX power, as shown in Figure 2-16. 2-8 SJ-20110920155816-006|2011–11–15 (R1.0)

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Figure 2-16 Setting ODU Parameters

8. Click Apply. 9. On the topology tree, select Configure > TDM Traffic > Cross Connect, as shown in Figure 2-17. Figure 2-17 Cross Connect Node

10. In the P2P Config area, configure the route from the RTUA board at slot 3 to the RMU board 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 shown in Figure 2-18.

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Figure 2-18 Configuring TDM Service P2P Route

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. – End of Steps –

2.5 Testing Inter-Site ETH Service If Ethernet service is available between sites, you can verify the service availability through testing the Ethernet service. To facilitate on-site commissioning, use the ping package method, 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 the computer is in Access mode, the air interfaces of the devices at both ends are in Trunk mode, and correct VLAN ID is configured.

Steps 1. Set up the test environment, as shown in Figure 2-19. Set the corresponding IP address. Figure 2-19 Test Environment

2. Use a cross-connect Ethernet cable to connect a port of Ethernet service at the local end with the commissioning computer. 2-10 SJ-20110920155816-006|2011–11–15 (R1.0)

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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, where 193.254.1.2 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 the Ethernet service is connected. Figure 2-20 Connected Ethernet Service

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

5. After the ping command is executed, check the transceiving data statistics. If the statistic data contains Lost=0 (0% loss), as shown in Figure 2-22, it indicates that no package is lost. Figure 2-22 Packet Loss Check

– End of Steps –

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

Prerequisite l l l

Antenna adjustment at both ends is completed. There is an EOW phone on the site. 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 board to 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 service is normal. – End of Steps –

2.7 Testing 1+1 Changeover This section describes how to verify the 1+1 changeover function if this function is configured. This section takes E1 service as an example. configuration shown in Figure 2-23.

Assume that the device uses the

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.

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Figure 2-24 Test Environment

a. Connect a 16-way E1 loopback head to the E1 port of the RTUA at the remote equipment. 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 the bit error tester. 2. Enter the IDU’s IP address on the address bar of the browser. The page for configuring system work mode is opened through LMT. 3. Configure the shelf. a. Select Configure > Shelf Configure on the topology tree, as shown in Figure 2-25. Figure 2-25 Shelf Configure Node

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

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Figure 2-26 Configuring the Shelf

Note: For 1+1 protection, one transmit unit has two slot numbers. The active slot is user-defined. The ODU connected to the active slot is the active ODU and the ODU 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 5 and 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. Figure 2-27 Radio Link Node

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

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Figure 2-28 Setting Work Mode

c. Click Apply. d. In the Set Protection Parameter area, set Protection Type to HSB or SB, and Protection 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, select Configure > TDM Traffic > Cross Connect, as shown in Figure 2-30.

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Figure 2-30 Cross Connect Node

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.

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Figure 2-31 Configuring TDM Service P2P Route

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 after being interrupted instantaneously. 9. After the changeover is completed, test the bit error for five to ten minutes. The test result should be no bit error. – End of Steps –

2.8 Testing SNCP Changeover This section describes how to verify the SNCP changeover if this function is configured. This section takes E1 service as an example. configuration shown in Figure 2-32.

Assume that the device uses the

Figure 2-32 SNCP Changeover Configuration

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Prerequisite l l

The equipment is configured with two IDUs. Each IDU is configured with two RMUBs and two ODUs. 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 the bit error tester. 2. Enter the IDU’s IP address on the address bar of the browser. The page for configuring system work mode is opened through LMT. 3. Configure the rack. a. Select Configure > Shelf Configure on the topology tree, as shown in Figure 2-34. Figure 2-34 Shelf Configure Node

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b. In the Shelf Configure page, cnfigure the board types based on the actual configuration. The transmit unit numbers of the two RMUB boards must be different, 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. Figure 2-36 Radio Link Node

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

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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 transmitting power, as shown in Figure 2-39. Figure 2-39 Setting ODU Parameters

g. Click Apply. 5. Set SNCP route. a. On the topology tree, select Configure > TDM Traffic > SNCP, as shown in Figure 2-40.

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Figure 2-40 SNCP Node

b. In the Configure TDM SNCP area, click Add to add SNCP service routing configuration, 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 route configuration. 6. The bit error tester starts running. Keep the tester working for three to eight minutes and ensure that there is no bit error. 7. Switch off the ODU power of the working transmit unit. Check the bit error test result.

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The test result should show that the service is restored after being interrupted instantaneously. 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 power of the protection transmit unit. 10. Check the bit error test result. The test result should show that the service is restored after being interrupted instantaneously. – End of Steps –

2.9 Testing E1 Cable Connection By testing the E1 cable connection, you can check whether the E1 cable is normal and properly connected to the equipment.

Prerequisite l l

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

Steps 1. Connect the E1 interface to the error bit tester. The error bit tester displays the AIS alarm. 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. – End of Steps –

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Glossary IDU - 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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