Base Station Commissioning - Green Parties World Widegreens.org/~jims/pix/procedure.pdf · 1106136-01 Pre-Production 77 Revision 5 CHAPTER 7 Base Station Commissioning In This Chapter:

1106136-01 Pre-Production 77Revision 5

C H A P T E R

7Base Station

Commissioning

In This Chapter:

Commissioning Overview, page 78 Alarms, page 80 Receiver Sensitivity Test, page 81 Transmit Power Tests, page 87 Network Connection and Ping Test, page 91 Remote Unit Test, page 92 BeamPlex Element Management System, page 94

CHAPTER 7 Base Station Commissioning BRN-5000 Base StationCommissioning Overview Installation and Commissioning

78 Pre-Production 1106136-01Revision 5

Commissioning Overview

The following list summarizes the base station installation process. The topics covered in this chapter are shown in bold print.

– Install antennas

– Route external cables

– Install cabinet (main and extension as required)

– Connect wiring between cabinets (if extension cabinet is used)

– Connect all external cabling

– Connect 48 VDC power

– Install fuses

– Install modules

– Perform configuration tasks

– Commission the system with functional tests

The previous chapter ended with setting initial configuration parameters in a functioning base station. You are now ready to begin commissioning the base station with various test routines to confirm that it is ready for service.

Note: This procedure accomplishes connecting the base station to the network and a remote unit to the base station. Then it tests the connectivity between the remote unit and the Internet. Accordingly, you must have all switches, gateways, servers, and any other network devices configured and ready to communicate with the base station.

BRN-5000 Base Station CHAPTER 7 Base Station CommissioningInstallation and Commissioning Commissioning Overview


The following list summarizes the tests used in this commissioning procedure:

♦ Check for alarms

♦ Test receiver sensitivity

♦ Test transmit power

♦ Connect to network and ping addresses

♦ Install a remote unit and test through-put from web site

♦ BMS discovers base station and remote unit

You should have a copy of the following BeamReach Networks manuals when performing these tasks:

Base Station CLI Terminal User Reference manual (document number 1106137-01)

BRU-100 and BRU-150 Installation and Maintenance Service Utilities (document number 1106138-01)

Equipment and Materials

The following equipment and materials are needed to perform the tasks described in the chapter:

– Portable (laptop) PC with Telnet client, Ethernet card, PPPoE client, and CD drive. (A Telnet client that can log the display to a text file is recommended.)

– Ethernet cable with RJ-45 males connectors on each end

– A 30dB, 50-watt attenuator with N-type male connector for each antenna connector used by this base station’s antenna configuration.

– Power meter with cables, and male adapters for N-type connectors and female adapters for SMA connectors.

– BeamReach Networks’ Service Utilities software

– Either a BRU-100 or a BRU-150 Remote Unit (recommended)

– 48 VDC portable power supply (if RU is not located near a standard power source)

– BeamReach Networks’ BRU-100 and BRU-150 Installation and Maintenance Service Utilities manual, and Base Station CLI Terminal manual.

CHAPTER 7 Base Station Commissioning BRN-5000 Base StationAlarms Installation and Commissioning


Alarms

Note: If you are commencing this chapter directly after completing the configuration task in the previous chapter and the BCT is still monitoring alarms, you can skip this section and proceed to the Receiver Sensitivity Test on the next page.

Use the BCT (base CLI terminal) to check for the presence of alarms generated by the base station.

Any functional discrepancy indicated by an active alarm must be resolved before proceeding.


The following equipment and materials are needed to perform the tests in this section:

– Portable PC with Ethernet card


Test Procedure

Step 1 Connect the PC to the primary NPC module (master LED illuminated) and login as described in the section Connect to the NPC Module on page 65.

Step 2 Check for active alarms:

[field]cli>show alarms active↵

This command displays currently existing alarms. If any problems are indicated, they must be corrected before proceeding.

Step 3 Set the BCT to monitor new alarms:

[field]cli>show alarms log↵

This commands monitors the system for new alarms and displays them as they occur. Leave this window open during all the tests.

BRN-5000 Base Station CHAPTER 7 Base Station CommissioningInstallation and Commissioning Receiver Sensitivity Test


Receiver Sensitivity Test

This procedure uses the built-in transmit/receive compensation routine of the base station to test the base station’s receiver sensitivity. This compensation routine tests and aligns various components in the base station’s receiver path.

A worksheet for this test is provided in Appendix A.


The following equipment and materials are needed to perform the tests described in this section:

– Portable (laptop) PC with Telnet client and an Ethernet card. (A Telnet client that can log the display to a text file is recommended.)

– Ethernet cable with RJ-45 male connectors on both ends.

Test Procedure

You will repeat this test for each configuration listed in Table 7-1. See the table notes for test variations to accommodate different configurations.

You will use the BCT to issue commands and view status during this procedure. You may find it helpful to open multiple BCT windows. For example, use one window to view the show card-state display, one window to issue commands, and one window to monitor alarms.

At any time during this test, use the BCT show card-state command to determine which modules are active and which are in standby.

See Figure 7-1 on page 86 for module locations and slot numbers.

Note: The base station must have been operating for at least five minutes prior to initiating this test to allow the transmit/receive compensation to stabilize.

CHAPTER 7 Base Station Commissioning BRN-5000 Base StationReceiver Sensitivity Test Installation and Commissioning


= Make these modules active = Switch this module pair to the redundant pair

Notes:

1. A base station’s default operating configuration is that shown for Cfg 1.

2. The “none” column means the primary XCVR/MTM pairs are active and the redundant pair is in standby. The redundant pair is XCVR 5 and MTM 5.

3. If this base station does not have all the XCVR/MTM pairs indicated in the table, use any existing pairs for Cfg 4 & 5 tests.

4. If the base station is not configured for redundant operation, use only the Cfg 1 test.

5. When you switch the NPC to the redundant module for Cfg 5, 6 and 7, remember to connect the Ethernet cable to the redundant NPC, which now has its master LED illuminated.

Step 1 Open a new BCT window to issue commands and another window to view the show card-state display, as desired.

Step 2 Set the base station to the applicable test configuration, starting with Cfg 1, shown in Table 7-1.

Cfg 1 is the default configuration so no changes should be necessary.

For all other configurations, see Switchover Commands on page 84 for the specific BCT commands for each configuration. You must return the XCVR/MTM pairs to default after each reading.

Note: When you switch to the redundant NPC for Cfg 5, 6 and 7, you must connect the PC’s Ethernet cable to the redundant NPC, which now has its master LED illuminated.

Table 7-1 Test Configurations

NPC LO XCVR/MTM pair to switchover

Cfg.1

(default)2 1

(default)2 none

(default)Pair 1 Pair 2 Pair 3 Pair 4

1

2

3

4

5

6

7



Step 3 View and save the T/R compensation statistics.

[field]cli>show comp-stats↵

A large amount of data will display on the screen. Each antenna path has three statistics that must be within the limits shown in this table:

Save this display as a text file. This allows you to print a copy to keep with the worksheets used in the next tests.

This data also serves as a baseline to which you can compare future reading to detect changes in performance.

Step 4 Return to Step 2 and repeat the sequence for all of the configurations in Table 7-1.

Step 5 After completing this test, ensure the base station is returned to the default configuration. Leave the attenuators in place and the BCT connected. Proceed to the transmit power tests on page 87.

Table 7-2 Receiver Sensitivity Statistics

Measured SNR Time Drift SNR Residual Est. SNR

≥ 30.000000 dB ≥ 30.000000 dB ≥ 30.000000 dB



Switchover Commands

This section provides the exact BCT commands needed to set the base station to the various configurations required in the receiver sensitivity test.

This procedure assumes the base station is configured with redundant modules. If not, perform the test only for Cfg #1.

In the table below, Default indicates the factory default configuration, which does not require changing for this test. Switchover indicates modules that need to be changed with the BCT.

For the XCRVT / MTM pairs, the switchover command deactivates the module specified in the command line and activates the redundant module. To switch back, you specify the redundant module in the command line.

For the NPC and LO, there is only one active and one redundant module. So the switchover command does not require specifying which module to switch.

Set the BCT to maintenance mode with this command to access the switchover command:

[field]cli>config maint↵[field]brbase(configure-maintenance)#

Cfg #2

[field]brbase(configure-maintenance)#switchover qt-mtm-pair qt_mtm_pair1 force↵After taking measurements, return the qt-mtm-pair to the default configuration:

[field]brbase(configure-maintenance)#switchover qt-mtm-pair qt_mtm_pair5 force↵

Table 7-3 Default/Switchover Chart

Cfg # NPC LO XCRVT/MTM pair

1 Default Default Default

2 Default Default Switchover

3 Default Default Switchover

4 Default Switchover Switchover

5 Switchover Switchover Switchover

6 Switchover Switchover Default

7 Switchover Default Default



Cfg #3

[field]brbase(configure-maintenance)#switchover qt-mtm-pair qt_mtm_pair2 force↵After taking measurements, return the qt-mtm-pair to the default configuration:


Cfg #4

[field]brbase(configure-maintenance)#switchover qt-mtm-pair qt_mtm_pair3 force↵[field]brbase(configure-maintenance)#switchover gps-lo-prbt-prbd_submodule force↵

After taking measurements, return the qt-mtm-pair to the default configuration:


Cfg #5

[field]brbase(configure-maintenance)#switchover qt-mtm-pair qt_mtm_pair4 force↵[field]brbase(configure-maintenance)#switchover npc force↵

After taking measurements, return the qt-mtm-pair to the default configuration:


Cfg #6

No changes required.

Cfg #7

[field]brbase(configure-maintenance)#switchover gps-lo-prbt-prbd_submodule force↵

After taking measurements, return the npc to the default configuration:

[field]brbase(configure-maintenance)#switchover npc force↵

To verify that the modules are in the default configuration, use the show card-state command and look at the Redundancy column to confirm:

– NPC1 shows active and NPC2 shows standby

– XCVR1-4 shows active and XCVR5 shows standby

– MTM1-5 shows active and MTM5 shows standby

– LO1, PRBT1, GPS1 shows active and LO2, PRBT2, GPS2 shows standby



Figure 7-1 Module Locations and Slot Numbers

Quad Transceiver

Quad Multitone Modem

MultiBeam Processor

Network Processor / Controller

R R R R

1 2 3 4

1 2 3 4

5 6 7 8 9

Local Oscillator

Probe Transceiver RF Switch

GPS P GPS R

P = Slots for primary modulesR = Slots for redundant modules

Slots shown in white are not used

BS

004

Au

xilia

ry S

hel

fD

igit

al S

hel

f

P R P R

10 11 12 13 14 15 16 17 18 19 20 21

LO PRBT

XCVR MTM NPC

BRN-5000 Base Station CHAPTER 7 Base Station CommissioningInstallation and Commissioning Transmit Power Tests


Transmit Power Tests

This procedure uses a power meter to measure transmission power output from each antenna port and from each cavity filter. There is a power module/cavity filter pair for each installed antenna.

There are worksheets in Appendix A for recording measurements.

Note: You must know how many subband pairs are operational in this base station to perform these tests.

In the current system release there are only two configurations of subband pairs: three pairs for the WCS frequency band or eight pairs for the MMDS frequency band. If you do not know how your base station is configured, use the BCT command show airlink-config and look at the Number of Operating Subbands line.

These procedures assumes the BCT is still connected from the last test. If it is not, see the section Connect to the NPC Module on page 65. The attenuators on the cable ports should also still be in place.

Note: The base station must have been operating for at least five minutes prior to initiating this test to allow the transmit/receive compensation to stabilize.


The following equipment and materials are needed to perform the tests described in this section:

– Portable (laptop) PC with a Telnet client, Ethernet card, and CD drive.

– Ethernet cable with RJ-45 male connectors on both ends.

– A 30dB, 50-watt attenuator with N-type male connector for each antenna connector used by this base station’s antenna configuration.

– Power meter with cables, and male adapters for N-type connectors and female adapters for SMA connectors.

CHAPTER 7 Base Station Commissioning BRN-5000 Base StationTransmit Power Tests Installation and Commissioning


Test Procedure – Antenna Ports

Use the Power Measurements Worksheet – Antenna on page 98 to record the power measurements.

Calibrate the power meter before taking measurements.

Step 1 Disconnect all antenna cables from the top of the Base Station. If the cables are not labeled with the antenna port number, do so before removing them. See Figure 7-2 below for reference.

Step 2 Connect a 30dB, 50-Watt, N-Type attenuator to each antenna port at the top of the Base Station.

Step 3 Set the base station to test configuration #1 as shown in Table 7-1 on page 82.

The preceding receiver sensitivity test left the base station in test configuration #1. You can verify this with the BCT show card-state command, as described on page 85.

If the base station is not in default configuration, review the BCT commands in the section Switchover Commands on page 84 and switch modules as necessary.

Step 4 Verify the receiver sensitivity readings with the BCT.

[field]cli>show comp-stats↵

All readings must be greater than or equal to 30.000000 dB, as shown in Table 7-2 on page 83.

Step 5 Take power readings at each 30dB attenuator connected to the base station antenna ports. Record your results in column B in of the worksheet.

Step 6 In column C of the worksheet, perform the calculation of adding 30dB to each of the measurements in column B. This results in a corrected power reading that compensates for the attenuation of the test configuration.

Step 7 Confirm that the measurements in column C comply with the specification in the following table, which is also shown on the worksheet.

Step 8 Do not remove the attenuators from the antenna ports. Continue to the next test.

Table 7-4 Expected Power (Corrected) – Antenna

1 SBP 2 SBP 3 SBP 4 SBP 5 SBP 6 SBP 7 SBP 8 SBP

+14.2 ± 1dB +17.2 ± 1dB +19.0 ± 1dB +20.2 ± 1dB +21.2 ± 1dB +22.0 ± 1dB +22.7 ± 1dB +23.2 ± 1dB

BRN-5000 Base Station CHAPTER 7 Base Station CommissioningInstallation and Commissioning Transmit Power Tests


Figure 7-2 Antenna Connectors

BS

010

b

+48 RTN -48 VDC

A MAIN

+48 RTN -48 VDC

B MAIN

ANT6

ANT5

ANT2

ANT1

ANT8

ANT7

ANT4

ANT3

CHAPTER 7 Base Station Commissioning BRN-5000 Base StationTransmit Power Tests Installation and Commissioning


Test Procedure – Cavity Filters

Use the Power Measurements Worksheet – Cavity Filter on page 99 to record the power measurements.

Calibrate the power meter before taking measurements.

See Figure 5-1 on page 47, Figure 5-7 on page 59, and Figure 5-8 on page 60 for diagrams of the cavity filter modules.

Step 1 Disable the transmit/receive compensation with the BCT.

[field]cli>disable-compensation↵

Step 2 Read and record the power measurements from the cavity filters.

a. Disconnect the cable from the J4 connector on the probe distribution module for antenna 1 and connect the power meter to the cable, which is connected to J4 on the cavity filter.

b. Take the power measurement from the cavity filter with the power meter. Record the measurements on the worksheet.

c. Reconnect the cable then proceed to the next cavity filter and repeat this procedure.

Step 3 Confirm that the recorded measurements comply with the specifications in Table 7-5 for the number of operating subband pairs in this base station.

Step 4 Enable the transmit/receive compensation with the BCT after all measurements have been recorded.

[field]cli>enable-compensation↵

Step 5 Remove all attenuators from the antenna ports at the top of the base station. Reconnect the antenna cables being careful to follow the labeling to connect the cables to the correct ports.

Step 6 Check for any active alarms with the BCT.

[field]cli>show alarms active↵

Table 7-5 Expected Power


–15.8 ± 1dB –12.8 ± 1dB –11.0 ± 1dB –9.8 ± 1dB –8.8 ± 1dB –8.0 ± 1dB –7.3 ± 1dB –6.8 ± 1dB

BRN-5000 Base Station CHAPTER 7 Base Station CommissioningInstallation and Commissioning Network Connection and Ping Test


Network Connection and Ping Test

Perform this test to verify connection with other nodes over the network.



– Portable PC with Ethernet card


Test Procedure

Step 1 Connect the network cables to the I/O panel on the top of the base station. See the section Connecting to the Main Cabinet on page 35 for reference.

Step 2 Use the BCT to perform a ping test to all IP addresses configured into the base station by the steps in Chapter 6.

This includes the SNMP host IP, which is the address for the BeamPlex Element Management System (BMS). You should have these addresses recorded on the configuration worksheet in Appendix A.

Example:

[field]cli>ping 192.168.51.155↵192.168.51.155 is alive

Configuration File Backup

As described on page 75, now that you have connection to a TFTP server, you should make a backup copy of the configuration file:

[field]cli>copy running-config file {<file>} [<server ip>]↵

Provide a <file.bin> name and be sure to add the .bin extension. Choose a name that identifies the file for future reference.

If the <server ip> is not specified, the default server you set in Step 14 of Chapter 6 is used.

CHAPTER 7 Base Station Commissioning BRN-5000 Base StationRemote Unit Test Installation and Commissioning


Remote Unit Test

Perform this test to verify connectivity from a remote unit to the Internet. Installation of a remote unit is required. BeamReach Networks recommends installing the remote unit at least 1/2 kilometer from the base station antennas. However, this figure is a general reference as you may be able to obtain a good signal at a closer distance. Check the signal strength at Step 4 of the procedure.

This procedure utilizes a commercial web site to measure the throughput rate of the system.



– Portable PC with Ethernet card and PPPoE client


– BeamReach Networks’ Service Utilities software

– Either a BRU-100 or a BRU-150 Remote Unit (recommended)

– 48 VDC portable power supply (if RU is not located near a standard power source)

– BeamReach Networks’ BRU-100 and BRU-150 Installation and Maintenance Service Utilities manual

BRN-5000 Base Station CHAPTER 7 Base Station CommissioningInstallation and Commissioning Remote Unit Test


Test Procedure

You will need the BRU-100 and BRU-150 Installation and Maintenance Service Utilities manual for this procedure, unless you are already familiar with remote unit installation procedures.

Step 1 Prepare the PC, as described in the installation manual:

– Configure your PC’s IP address for connection to a remote unit.

– Install the service utilities.

Step 2 Install a remote unit at least 1/2 kilometer from the base station antenna array.

Either model of remote unit may be used. However the BRU-150 is the quickest to install. Follow the instructions in the installation manual.

Step 3 Connect the PC to the remote unit with the Ethernet cable.

Step 4 Perform initial connectivity check:

a. Open the status monitor program in the service utilities.

b. Log in to the remote unit on the BRU Signal Strength Monitor page of the status monitor. Verify an adequate signal level.

c. On the BRU Diagnostics page, perform the connectivity tests to the BRU (remote unit) and the base station.

Step 5 Connect to web site and test throughput.

Connecting to any commercial web site establishes the remote unit’s ability to communicate over the network. Using one of the available sites that performs a throughput speed test of data transfer provides additional testing.

Here are a few web sites that perform data speed tests:

www.pcpitstop.com/internet/bandwidth.asp

www.dslreports.com/stest/0

www.cable-modem.net/features/oct99/speed.html

http://us.mcafee.com/root/speedometer.asp

www.testmy.net/cgi-bin/d_load.cgi

The data rate results from these sites are approximations so variations in speed may be noticed on different sites.

CHAPTER 7 Base Station Commissioning BRN-5000 Base StationBeamPlex Element Management System Installation and Commissioning


BeamPlex Element Management System

This test requires you to communicate with your operation center where the BeamPlex Element Management System (BMS) client is located.

Step 1 Direct the operator to discover the base station with the BMS.

Step 2 Verify the BMS correctly identifies the base station and all of its components.

Step 3 Verify the base station display in the BMS lists the remote unit used for these tests.

The base station is now ready for service.


A P P E N D I X

AWorksheets

In This Chapter:

Configuration Worksheet, page 96 Commissioning Check List, page 97 Power Measurements Worksheet – Antenna, page 98 Power Measurements Worksheet – Cavity Filter, page 99

This appendix contains a worksheet for you to record various configuration values, and a worksheet to record the commissioning process.

Recording information on the configuration worksheet ahead of time will prove useful during the configuration tasks in Chapter 6. The source of information for most of the worksheet items is the site planning documents, which should contain installation and network configuration data. Additionally, configuration data from the specifications used to order the base station also contain pertinent information.

Use the commissioning worksheet to create a record of functional testing of the base station.

APPENDIX A Worksheets BRN-5000 Base StationConfiguration Worksheet Installation and Commissioning


Configuration Worksheet

Base Station Site _________________________________

Date _________________________ Engineer _____________________

CONFIGURATIONITEM

INFORMATIONSOURCE VALUE

BASE STATION

Offset Code Site Planning Documents

Base ID Site Planning Documents

Operating Band (MMDS or WCS) Configuration Specs

Frequency Range (Hz) Configuration Specs

Latitude (deg.xxxxx) Site Planning Documents

Longitude (deg.xxxxx) Site Planning Documents

Altitude (meters) Site Planning Documents

ANTENNAS

Antenna Sectors - No. of Sides Configuration Specs

No. of Installed Antenna Elements Site Planning Documents

Actual Cable Loss (dB) Measure - See page 17

GPS Antenna Cable Length (ft.) Measure - See page 19

NETWORK

Interface Type Configuration Specs

Base Station IP Address Site Planning Documents

Base Station Subnet Mask Site Planning Documents

Base Station Domain Name Site Planning Documents

DNS Address Site Planning Documents

SMS Gateway Address Site Planning Documents

SNMP Host Address (BMS) Site Planning Documents

SNMP RO Community Name Site Planning Documents

SNMP RW Community Name Site Planning Documents

Trap Host Addresses Site Planning Documents

Trap Community Name Site Planning Documents

TFTP Download Server Address Site Planning Documents

TFTP Event Log Upload Address Site Planning Documents

PVCs (ATM network only) SMS Operator

BRN-5000 Base Station APPENDIX A WorksheetsInstallation and Commissioning Commissioning Check List


Commissioning Check List

Base Station Site __________________________

Date ________________________ Engineer _______________________

Check for active alarms.

Perform receiver sensitivity test.

Perform antenna and cavity filter power tests.

Connect base station to network and perform ping test to all IP addresses.

Set up remote unit. Verify Internet connectivity and perform through-put test.

Direct BMS to discover base station.

Verify BMS has recorded remote unit.

APPENDIX A Worksheets BRN-5000 Base StationPower Measurements Worksheet – Antenna Installation and Commissioning


Power Measurements Worksheet – Antenna

Active Subband Pairs __________

A B C

Antenna Path Measured Power (dBm) Corrected Power (dBm)

1 +30dB =

2 +30dB =

3 +30dB =

4 +30dB =

5 +30dB =

6 +30dB =

7 +30dB =

8 +30dB =

9 +30dB =

10 +30dB =

11 +30dB =

12 +30dB =

13 +30dB =

14 +30dB =

15 +30dB =

16 +30dB =

Table A-1 Expected Power (Corrected) – Antenna


+14.2 ± 1dB +17.2 ± 1dB +19.0 ± 1dB +20.2 ± 1dB +21.2 ± 1dB +22.0 ± 1dB +22.7 ± 1dB +23.2 ± 1dB

BRN-5000 Base Station APPENDIX A WorksheetsInstallation and Commissioning Power Measurements Worksheet – Cavity Filter


Power Measurements Worksheet – Cavity Filter

Active Subband Pairs __________

Antenna Path Measured Power (dBm)

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Table A-2 Expected Power – Cavity Filter


–15.8 ± 1dB –12.8 ± 1dB –11.0 ± 1dB –9.8 ± 1dB –8.8 ± 1dB –8.0 ± 1dB –7.3 ± 1dB –6.8 ± 1dB