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General Troubleshooting Procedures

68

l

Troubleshooting BTS using Resistors Table

l

Pre-power testing

Troubleshooting the power cable (black)

This issue must be determined rapidly as you must verify that the BTS is being powered up correctly.
Sometimes, multiple things can go wrong including the cables. Therefore, it is recommended to prepare
all the cables before the installation.

For details on preparing the power cables, refer to the

cnWave™ 5G Fixed Planning and Installation

Guide.

Note

When preparing the power cable connectors, fit the gland nut, seal, and cage over the wire.
It is important to do this task before fitting the plug body.

It is good practice to test the resistance in the BTS (as described in the

Power cable connections

section)

and keep doing it at each section of the cable, as shown in

Figure 51

.

Power cable connections

A typical installation includes a mains power supply, DC-lightning protection units (LPUs) and the radio
(as illustrated in

Figure 52

).

Note

In

Figure 52

, data cables are not shown. This document is not a substitute for the LPU

Installation Guide. Significant installation and grounding details are omitted for clarity in this
document.

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Содержание cnWave 5G Fixed

Страница 1: ...OPERATION AND TROUBLESHOOTING GUIDE cnWave 5G Fixed System Release 3 0...

Страница 2: ...r the 3rd Party software supplied material contained in the Cambium products described in this document may not be copied reproduced reverse engineered distributed merged or modified in any manner wit...

Страница 3: ...tise and training for professional installers 9 Legal and Open Source Software statements 9 Problems and warranty 9 Reporting problems 9 Repair and service 10 Hardware warranty 10 Security advice 10 C...

Страница 4: ...g MU MIMO performance No reboot required 38 Web UI of BTS 38 Linux setup iPerf server 40 Updating a BTS firmware Reboot required 42 Changing the bandwidth Reboot required 44 Changing the Uplink Tx Pow...

Страница 5: ...bleshooting a loss of connectivity 64 Troubleshooting a loss of Ethernet connectivity 65 Troubleshooting when CPE fails to register with a BTS 66 How to troubleshoot BTS 66 Troubleshooting the power c...

Страница 6: ...performance arising directly or indirectly out of the failure of the customer or anyone acting on the customer s behalf to abide by the instructions system parameters or recommendations made in this...

Страница 7: ...he FCC Rules Operation is subject to the following two conditions l This device may not cause harmful interference l This device must accept any interference received including interference that may c...

Страница 8: ...that all current relevant spectrum policies licensing procedures and technical requirements are still applicable For additional information contact the local Industry Canada office Renseignements sp...

Страница 9: ...n bonding and grounding Installation guidelines for the cnWave 5G Fixed platform family is available in the Lightning Protection Units LPUs topic in the cnWave 5G Fixed Planning and Installation Guide...

Страница 10: ...vice Cambium Networks systems and equipment provide security parameters that can be configured by the operator based on their particular operating environment Cambium recommends setting and using thes...

Страница 11: ...it is the individual recipient s responsibility to ensure that packaging materials are collected and recycled according to the requirements of EU environmental law In non EU countries In non EU count...

Страница 12: ...al and correctly configured in a lab environment before installing the equipment at the customers site This is also known as the staging process It also provides an opportunity to install updates or s...

Страница 13: ...s 169 254 1 1 and therefore the management PC must be configured with an IP address in the same subnet for example 169 254 1 100 You must configure the PC for example using Windows PC or laptop for se...

Страница 14: ...roperties dialog box By default the Networking tab is selected 4 Select Internet Protocol Version 4 TCP IPv4 from the available list of connections as shown in Figure 1 5 Click Properties The Internet...

Страница 15: ...255 255 255 0 8 Leave the Default gateway text box blank and click OK This action must allow you to communicate with the BTS 9 To verify whether the PC is configured successfully run a command and typ...

Страница 16: ...hen the management PC is successfully configured with the correct IP address required to communicate with the BTS you must perform the following tasks 1 Connect the power and data cables to the BTS as...

Страница 17: ...owing steps 1 Connect the input side of the 30W DC Power injector to the BTS as shown in Figure 4 Figure 4 Connecting the power cable to the BTS 2 Connect an Ethernet cable data between the network po...

Страница 18: ...prompt and type Ping t 169 254 1 1 If the PING is successful you can access the login page of B1000 BTS UI using the http 169 254 1 1 URL For detailed information on how to power up the BTS refer to...

Страница 19: ...le page refer to the cnWave 5G Fixed Configuration Guide Note If there is another user who is already accessing the B1000 UI when you log in then you are disconnected from the UI When you try to log o...

Страница 20: ...connect the CPE to power before the BTS but only when the management PC has been successfully configured with the right IP address to communicate with the CPE The easiest way to connect the CPE to pow...

Страница 21: ...run a command prompt and type Ping t 169 254 1 1 If the PING is successful you can access the login page of C100 UI using the http 169 254 1 1 URL For detailed information on how to power up the CPE r...

Страница 22: ...eady accessing the C100 UI when you log in then you are disconnected from the UI When you try to log on and connect to the UI the Sign In page appears with the Force Sign In option For more informatio...

Страница 23: ...ng the B1000 UI sections respectively 3 Check or verify the following main parameters specific to the BTS in the B1000 UI l Release Name When you navigate to Dashboard General page from the main B1000...

Страница 24: ...must have this frequency in the Radio Scan Frequencies list as described in Step 6 in this section l Max EIRP This is a parameter that is country regulation specific and the recommended value for a La...

Страница 25: ...disable the Radius authentication by choosing the None option as shown in Figure 14 Figure 14 The Authentication Mode parameter l Synchronisation When you navigate to the System Synchronisation page...

Страница 26: ...board page the Release Name parameter is visible Take a note of the operational software version number You must note down the radio related parameters for the BTS When you navigate to System Radio pa...

Страница 27: ...link has been established between the BTS and the CPE The easiest way is to view the B1000 BTS dashboard which shows the status and number of CPEs connected and registered with BTS as shown in Figure...

Страница 28: ...he BTS CPE connection status using the C100 dashboard 8 If the link fails to come up even after following all the above mentioned steps from 1 to 7 check some of the parameters in the Radio page in th...

Страница 29: ...sponding value of the CPE Rx Power Figure 20 CPE Rx Power vs MCS modes l Error Vector Magnitude EVM A good EVM must be in the range of 20 25 dB This parameter is dependent on the modulation mode and l...

Страница 30: ...g a BTS CPE link Table 1 lists the parameters that must be configured to establish a link between a BTS and one or several CPEs Table 1 Parameters required for establishing a link between a BTS and a...

Страница 31: ...while 25 dB translates to 5 6 error Rx Power Yes Yes The Rx Power level is the strength of the signal that is received from a radio The Rx Power number is normally represented as a negative value for...

Страница 32: ...ware Reboot required l Changing the bandwidth Reboot required l Changing the Uplink Tx Power initial or continuous control Reboot required l Resetting BTS to factory default configuration Reboot requi...

Страница 33: ...em page refer to the cnWave 5G Fixed Configuration Guide Modifying BTS network parameters No reboot required The Systems page in the B1000 UI allows you to modify the network specific parameters for a...

Страница 34: ...reboot required The Systems page in the B1000 UI allows you to modify the user account specific parameters with no reboot of the system required Perform the following steps to modify the user account...

Страница 35: ...hboard page navigate to System Radio The Radio page appears For information on how to log on to the B1000 UI refer to the Accessing the B1000 UI section 2 In the Frequency text box check and modify th...

Страница 36: ...ion Horizontal or Vertical in the Polarisation field as shown in Figure 25 Figure 25 The polarisation parameter in the Radio page 3 Click Save to apply the change When you change the value of this par...

Страница 37: ...Figure 26 RADIUS AAA parameter in the Authentication page 3 Set the IP address es of the RADIUS Server s and the secret values or password that you have configured in the clients conf file in the RADI...

Страница 38: ...such that the spatial frequency is at least 128 Following sections describe the methods used for testing the MU MIMO performance in a lab environment Web UI of BTS You can run a link capacity test us...

Страница 39: ...ink performance as if there was a single CPE In other words the group size for MU MIMO is 1 Figure 28 Link capacity test with MUMIMO disabled 4 Select Enabled in the MUMIMO Control field in the System...

Страница 40: ...ce on a Linux setup using the iPerf server is an alternative method Perform the following steps to test the MUMIMO performance in a lab environment 1 On each CPE c4000 set up an iPerf server iperf3 s...

Страница 41: ...2 16 VLAN 1 t 1000 i 2 As an output each stream creates a log file as shown in Figure 31 and Figure 32 4 Inspect the traffic log on the BTS to view the number of grouping size during the tests Figure...

Страница 42: ...Updating a BTS firmware Reboot required The Tools page in the B1000 UI allows you to update firmware software Perform the following steps to update the firmware on the Tools page 1 On the left navigat...

Страница 43: ...rmware page If the uploading is successful the Upload Progress section displays the same The BTS has room for two uploaded images and the user can select the newly updated one and click onto install 6...

Страница 44: ...tial or continuous transmit power control This action allows you to l reach the BTS target receive power before starting transmission and l keep the transmit power control constant for CPEs during a s...

Страница 45: ...o changes to the IP address perform the following steps 1 From the main B1000 dashboard page navigate to Tools Configuration The Configuration page appears If the Local Management Access parameter is...

Страница 46: ...in Figure 35 This warning message indicates that the local management IP address will be set to the default 192 254 1 1 24 following the reboot When the Enable Reboot check box is selected the BTS re...

Страница 47: ...no change to the IP address To reset the CPE to factory defaults with no changes to the IP address perform the following steps 1 From the main C100 dashboard page navigate to Tools Configuration The...

Страница 48: ...he local management IP address When this check box is deselected unticked a warning message appears as shown in Figure 37 This warning message indicates that the local management IP address will be se...

Страница 49: ...saved in the Downloads folder by default Figure 38 Exporting the current configuration 3 To import a configuration file choose an import option Local File or Remote Server from the Import From paramet...

Страница 50: ...dwidth demands Cambium Networks introduced the MIR functionality by considering the Burst Bucket concept as shown in Figure 40 The purpose is to set limits on how much data can be sent to and received...

Страница 51: ...e transmission credits at the sustained downlink data rate in kbps For more information about these MIR specific parameters refer to the cnWave 5G Fixed Configuration Guide To test MIR perform the fol...

Страница 52: ...OK 5 Open the Tera Term vi Editor screen and navigate to Setup Serial Port as shown in Figure 42 Figure 42 Selecting the serial port The Serial port setup and connection screen appears 6 In the Seria...

Страница 53: ...appears You must use the following credentials to log on as shown in Figure 44 l Username labs l Password phn Figure 44 The log in screen of Radius Server C400 8 Edit the authorize file using the vi...

Страница 54: ...ich indicates that there are no limits on the CPE data traffic size Figure 45 MIR Parameters set with no limits For the test purpose you can set for instance ULBL and ULBR to 20000 kbps maximum 20 Mbi...

Страница 55: ...1 Ensure that all the other CPEs are powered off except for the one under test Only one CPE is enough to demonstrate the MIR functionality Ensure that the Radius Server is restarted and the CPE under...

Страница 56: ...robin scheme at each priority level Everything is scheduled at each level until the queues at that level are empty In addition to MIR Cambium Networks provides a CIR per priority level The CIR priori...

Страница 57: ...the uplink unless CIR is oversubscribed or the RF link quality is degraded l UHPULCIR The minimum rate in kbps at which an ultra high priority traffic is sent over the uplink unless CIR is oversubscr...

Страница 58: ...8 described in the Modifying the MIR parameters on the Radius Server section 3 In the authorize file locate and modify the CIR parameters for the CPE that is under test For the test purpose you can s...

Страница 59: ...ying the CIR parameters on the Radius Server section 2 Check the B1000 UI dashboard BTS to confirm that only one CPE is connected and registered 3 Run the link capacity test using the Tools Link Capac...

Страница 60: ...if needed Table 3 A sample of eighth Scenario Results CIR with MIR Active Radio Test Set up in Radius Microtik or else Reading DL Mbps LCT Expected Reading DL UP Mbps POP_0 CPE 1 MIR DL Burst Rate 250...

Страница 61: ...f synchronization if more than one BTS is installed This section explains some troubleshooting techniques to deal with the above main issues In all cases effective troubleshooting depends on measures...

Страница 62: ...ot BTS l Troubleshooting the power cable black l Troubleshooting the BTS data cable green l Troubleshooting BTS using Resistors Table l How to hardware reset a BTS to factory default l How to hardware...

Страница 63: ...e cluster If so focus on the synchronization and GPS signal l What data does the event log contain l Does the problem correlate to external hard resets with no Watchdog timers If so this indicates a l...

Страница 64: ......

Страница 65: ...er than 90 in both uplink and downlink l Execute a Ping command l Verify that no packet loss was experienced l Verify that the response periods are not significantly greater than l 15 ms from CPE to B...

Страница 66: ...the CPE is configured in the Radius Server s Authorize file 4 Verify that the BTS shows the connection possibilities to the CPE but the authentication fails 5 Verify that the CPE has the correct cert...

Страница 67: ...ing sections provide some steps on how to isolate the issue before troubleshooting the BTS and replace any faulty cables faulty surge suppressor or ultimately a faulty BTS l Troubleshooting the power...

Страница 68: ...Note When preparing the power cable connectors fit the gland nut seal and cage over the wire It is important to do this task before fitting the plug body It is good practice to test the resistance in...

Страница 69: ...Wave 5G Fixed BTS radio and DC LPU connections type A l Type B At the PSU 4 wire cable to 2 wire cable as described and illustrated in Power supply connection type B cnWave 5G Fixed BTS radio and DC L...

Страница 70: ...supply connection type B Ensure to review the cable testing section before making the connections to the power supply The connection between the four wires of the drop cable and the two wires of the p...

Страница 71: ...ng bung labelled Vo ADJ on the top face It is recommended particularly for longer cable runs or installations with an Auxiliary port PoE load to trim the output voltage up to between 57 V and 58 V Gen...

Страница 72: ...nd of the power cable to the PSU measure the resistance between pins If any of the tests fail examine the power cable for wiring faults Table 4 provides the expected resistances from the bottom of the...

Страница 73: ...e 55 we show some simple steps to diagnose any part of the data cable and surge suppressors that may be faulty The first stage is done at the site and the second stage would require a tower climb Note...

Страница 74: ...e 55 Troubleshooting the BTS data cable green Figure 56 and Figure 57 show simple steps to diagnose any part of the data cable and surge suppressors that may be faulty The first stage is done at the s...

Страница 75: ...General Troubleshooting Procedures 75 Figure 57 BTS Data cable troubleshooting Part 2...

Страница 76: ...bring the BTS down from the tower and cause service disruption to all customers in that sector Pre power testing Before plugging the RJ45 cable from the lower LPU or if not fitted the BTS or CPE into...

Страница 77: ...It is useful to record the following information in the event of a requirement to contact Cambium Networks Support or to identify changes in the installation at a later period l IP Address l Link name...

Страница 78: ...General Troubleshooting Procedures 78 Figure 59 BTS Data cable Resistance checking...

Страница 79: ...cute a short power cycle of the BTS At the power source you must do a simultaneous power OFF and power ON 2 Using a PC open a web browser and access the default IP address 192 254 1 1 to view the Radi...

Страница 80: ...at must be installed and executed for the BTS This configuration enables the BTS to use the image file uploaded in the Filename parameter for booting the BTS To complete the action you must click Boot...

Страница 81: ...quired for resetting the CPE to factory defaults Table 10 Parameters in the Recovery Image Console page for CPE Parameter Description Boot Selection Reset Configuration Resets the entire CPE configura...

Страница 82: ...configuration enables the CPE to use the image file uploaded in the Filename parameter for booting the CPE To complete the action you must click Boot TFTP Recovery This option can be used if the CPE i...

Страница 83: ...quipment dBm Decibel relative to a milliwatt DNS Domain Name System DL Downlink EIRP Effective Isotropic Radiated Power ESN Electronic Serial Number EVM Error Vector Magnitude FQDN Fully qualified dom...

Страница 84: ...uadrature Amplitude Modulation QoS Quality of Service QPSK Quadrature Phase Shift Keying RF Radio Frequency RACH Random Access Channel RADIUS Remote Authentication Dial In Service RSSI Receiver Signal...

Страница 85: ...olutions in urban suburban and rural environments with wireless that just works Installation and Configuration Guides http www cambiumnetworks com guides Technical training https learning cambiumnetwo...

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