InfiLINK XG Family Product

02

Installation

The InfiLINK XG installation process consists of the following stages:

  1. Laboratory pre-configuration.
  2. Preparing for the installation.
  3. Installing the ODU.
  4. Aligning of antennas.
  5. Link performance optimization.

1. Laboratory pre-configuration

It is common practice to pre-configure units before installation to verify the link establishment.

Minimum set of requirements must be met during devices pre-configuration in the lab:

  • Make sure that devices are positioned so that they are not directed right at each other in order to prevent device damage.
  • In case of Um model configuration it is allowed to connect two devices directly with RF cables without antennas with the mandatory use of attenuators with attenuation of at least 40 dB for each polarization. Installation\deinstallation of the attenuators and RF cables should only be performed when the devices are switched off.
  • In case the antenna or other device is connected to only one N-type connector do not switch on the Um model.
  • Tx Power must be set at the minimum value with "auto" option deactivated.

An equipment inventory: 

Connecting to the unit

Perform this stage to connect the management PC to the unit, power it up and open the web interface.

To connect the ODU to the PC and power it up, proceed to next steps:

  1. Connect the ODU's “GE0” port to the “OUT” port of the power supply using Ethernet cable.
  2. Connect the PC's Ethernet port to the "IN" port of the power supply using another Ethernet cable.
  3. Use a power cord to connect the power supply to an AC outlet (100 ... 240 VAC).

NOTE

The power supply has no power switch. It supplies power to the ODU as soon as AC power is applied.


Make sure that the Ethernet port of the Laptop has an IP-address assigned from the same subnetwork as the one for the unit (for example, set 10.10.10.50 with mask 255.255.255.0). 

 Units settings can be performed via: 

  • Web interface. 
  • CLI.

Setting via web interface

Accessing the web interface
  1. Access the unit to the default IP-address 10.10.10.1 with mask 255.255.255.0 via web browser.
  2. Use any letters or numbers for initial authentication, for example:
    • User name: login.
    • Password: password.

NOTE

Make sure strong passwords are set to the units before start of operation.


Upgrading firmware version

Perform this stage to ensure that the latest firmware version is installed on the unit. This stage consists of the following procedures:

  • Checking the installed firmware version.
  • Uploading a new firmware version.

Checking the installed firmware version

To check that the latest firmware version is installed, proceed as folllows:

  • Select the section "Maintenance".
  • Note the firmware version attribute.
  • Check that the latest available firmware version is the same as the one already installed using the "Check Latest Release" or "Check Latest Beta" buttons.
  • If the unit needs to be upgraded to the latest firmware version, perform this using one of two methods described below.

Uploading a new firmware version

  • Method 1 

Automatic upgrading:

    • In case a new firmware version is detected click the "Upgrade Firmware" button. 
    • Select "Check Latest Release" in the section "Maintenance".

NOTE

Make sure that the both sides of your "Point-to-Point" link are using the same firmware version. Always upgrade the remote unit first.


  • Method 2

Manual upgrading:

    • Download firmware from the ftp server: ftp://ftp.infinet.ru/pub/Firmware/XG/H12.
    • Go to the section "Maintenance" → "Upload" → "Choose File" in the field "Firmware". Navigate to the folder containing the downloaded firmware file and select "Open".
    • Select "Upload". The upload process is displayed.
    • On completion, the upload successful page is displayed.
    • Select "Reboot".
Radio settings

To start the radio configuration proceed to the "Radio" section. Make sure the following parameters are set: 

  • Node Type (one unit must be “master”, other  – “slave”).
  • Link ID.
  • Center Frequency.
  • Maximal Transmit Power.
  • Channel width.
  • Frame Period.
  • Max Distance.

Please note that the following parameters must have the same values at each side of the link. Otherwise the wireless link won’t be established:

  • Center Frequency.
  • Channel width.
  • Frame Period.
  • Downlink Quota.
  • Max Distance.
  • Short Cyclic Prefix.
  • Link ID.

Save the configuration, reboot both units and check if the link is up.

Checking the wireless link status

In order to check the wireless link status go to the "Status" section. The wireless link status should be in "UP" state and radio statistics should indicate the capabilities and quality of the link.

Setting via CLI

Accessing the unit
  1. CLI is available via telnet: "cmd> telnet 10.10.10.1" or use any suitable telnet client (for example, Putty).
  2. Use any letters or numbers for initial authentication, for example:
    • User name: login.
    • Password: password.

NOTE 

Make sure strong passwords are set to the units before start of operation.


Upgrading firmware version

Perform this stage to ensure that the latest firmware version is installed on the unit. This stage consists of the following procedures:

  • Checking the installed firmware version.
  • Upgrading a new firmware version.

Checking the installed firmware version

Check the firmware version via command: "xginfo version".Compare the current installed firmware with available firmware via ftp server: ftp://ftp.infinet.ru/pub/Firmware/XG/H12. If the unit needs to be upgraded to the latest firmware version, perform the upgrading firmware process.

Upgrading a new firmware version

Upgrade the firmware version from ftp server using command "flashnet get ftp:ftp@ftp://91.191.225.246/pub/Firmware/XG/H12/firmware.H12S10v1.6.6.bin", 

  • "1.6.6" - firmware version number.
  • "ftp" - username.
  • "ftp" - password.

On completion the upload process reboot the unit via command "restart yes".

Radio settings

Use the following commands to configure "master" and "slave":

  • xg -type master - set the node type to "master";
  • xg -type slave - set the node type to "slave";
  • xg -freq-ul 5400 - uplink center frequency value;
  • xg -freq-dl 5410 - downlink center frequency value;
  • xg -sframelen 10 - set the air frame period duration (in ms);
  • xg -cell-id 15 - link ID value;
  • xg -channel-width 20 - channel width value;
  • xg -txpwr 6 maximum transmit power value (in dBm); 
  • xg -max-distance 1 - maximum link distance (in km);
  • config save - save configuration;
  • restart yes - restart the unit.
Checking the wireless link status

Check the wireless link status via command "sys log show | grep UP". In case of success configuration: "changed state UP->DOWN".In order to view the radio link parameters use command: "xginfo stat". Command output is illustrated below.

2. Preparing for installation

Preparing inventory

Check that all components are available and undamaged, as illustrated below. Check the contents of all packages against their packing lists.

Preparing additional equipment

Tools

  • Screwdrivers set
  • Pliers/Wrenches
  • Spanners set

Equipment

  • GPS receiver or a map and compass with bearing/azimuth reading. 
  • Binoculars with large magnification.

In case of using Um models the following may be needed for sealing RF connectors:

  • Connectors sealing kit.
  • Tape for sealing threaded connections.
  • Heat-shrink tube.
  • Scissors.
  • Fan (for heating thermal shtinkage tubes, if necessary).
  • Fastening gun.

NOTE  

In case of correct cable gland assembly of the optical and Ethernet cables additional sealing is not required.


Additional items required:

  • In case of Um models installation:
    • External antenna.
    • Low-loss RF cables - CAB-RF-1M cable is recommended.
  • Antenna pole (if necessary).
  • Required grounding circuit, including cables and rods (if these are not already in place at the installation site).
  • Accessories:
    • AUX-ODU-INJ-G - DC injector with built-in lightning protection.
    • AUX-ODU-LPU-G or AUX-ODU-LPU-L- lightning protection unit.
    • ANT-SYNC - TDD synchronization unit.

Determine the line of sight conditions

  • Before installation it is recommended to perform site survey: 
    • Determine line of sight conditions and obstacles along the path.
    • Perform spectrum analysis and figure out spectrum occupation and available channels.
    • Perform wireless link planning.
  • When selecting the ODU placement for PtP link, in order to obtain the maximum link range and performance, LOS must be clear for the path between the two units.

Selecting the ODU mounting type

3. Installing the ODU

Cable gland assembly for the Ethernet cable

  • Put the cable gland nut (1), the split sealing grommet (2) and the cable gland threaded coupling (3) onto the pre-terminated cable.
  • Insert the split sealing grommet (2) into the cable gland threaded coupling (3). Insert the connector into the socket until you hear a click.
  • Screw the cable gland threaded coupling (3) into the port and tighten it.
  • Tighten the cable gland nut (1) onto the cable gland threaded coupling (3), do not apply excessive force.

NOTE 

Cable gland assembly for the optical cable is similar.


MONT-KIT-85 assembly

  • Attach the base plate (1) to the back of the unit using items 5, 9, 11.
  • In case of mounting on the pole (diameter from 30 to 85 mm), tighten the bracket (2) and the bracer (3) to the pole using items 7, 10, 12.
  • In case of wall mounting, tighten the bracket (2) to the surface using items 7, 10, 12. 
  • Attach the lever (4) between the bracket (2) and base plate (1) using items 6, 8, 10, 12. Adjust tilt and tighten all nuts at the required position.

NOTE 

Tighten the nut until the washer spring click, without pulling.


Xm model installation

To mount the ODU, proceed as follows:

  • Install the ODU with connectors facing down on the pole using MONT-KIT-85. Tighten to ensure the assembly grips, but can be adjusted on the pole.
  • Connect the FTP Cat5e cable with cable gland assembled to the ODU.
  • Provide grounding for the ODU.
  • Lay the FTP Cat5e cable from ODU to the power supply. The maximum length of the cable is 100 m.
  • Connect the FTP Cat5e cable with the shielded RJ-45 connector to the "OUT" port of the power supply, after previously having touched power supply connector case with FTP cable connector case.
  • Provide grounding for the power supply. 
  • Connect the PC Ethernet port to the "IN" port of the power supply using Ethernet cable. 
  • Use power cord to connect the power supply to an AC outlet (100 ... 240 VAC).

NOTE 

At the building entry point it is necessary to provide a small loop of the FTP Cat5e cable that is equal to at least 10 cable diameters. These ensure that water is not constantly channeled towards the connectors.


Um model installation

  • Install the ODU with connectors facing down on the pole using MONT-KIT-85. Tighten to ensure the assembly grips, but can be adjusted on the pole. 
  • Connect the FTP Cat5e cable with cable gland assembled to the ODU. 
  • Provide grounding for the ODU. 
  • Mount and electrically connect the external antenna with the grounded pole. 
  • Connect the ODU to the external antenna with RF cables, after previously having touched the RF cables’ connector case with ODU connector case. Connect the ODU "V" interface to the vertical polarization antenna and connect the ODU "H" interface to the horizontal polarization antenna. 
  • Seal the RF cable connectors at both sides.  
  • Lay the FTP Cat5e cable from ODU to the power supply. The maximum length of the cable is 100 m.
  • Connect the FTP Cat5e cable with the shielded RJ-45 connector to the "OUT" port of the power supply, after previously having touched power supply connector case with FTP cable connector case.
  • Provide grounding for the power supply. 
  • Connect the PC Ethernet port to the "IN" port of the power supply using Ethernet cable. 
  • Use power cord to connect the power supply to an AC outlet (100 ... 240 VAC).

NOTE  
At the building entry point it is necessary to provide a small loop of the FTP Cat5e cable that is equal to at least 10 cable diameters. These ensure that water is not constantly channeled towards the connectors.


Grounding and lightning protection recommendations

  • The ODU or external antenna should be placed on the pole at a height that is at least 1 meter below the top of the pole. In this case, there is a significant probability that the lightning strikes the pole and not the ODU or external antenna. The pole should be properly grounded: connected to the building lightning protection circuit according to your local regulations.
  •  All equipment must be connected at stabilized and surge protected power sources which must be properly grounded.
  • The end of the FTP service cable that is connected to the power supply should be assembled with a shielded RJ-45 connector. The other end of the FTP service cable (connected to ODU) should be assembled with unshielded RJ-45 connector.
  • The power supply IDU-BS-G(60W) is grounded via a three-conductor power cord and a grounded socket.
  • AUX-ODU-LPU-G and AUX-ODU-INJ-G grounding is performed using grounding bolt.
  • Special attention should be paid if the antenna used is not DC-shorted. In this case, an additional lightning arrestor should be used between the antenna and ODU.
  • Antenna pole, ODU and lightning arrestor should be connected to the common ground ring. Grounding cables should be no less than 10AWG thick and must use corrosion-resistant connectors.

NOTE

Please note grounding cables should not be connected to the mast. All devices must use separate grounding cable that should be connected to the grounding circuit. The best scenario is when grounding cables are lined parallel to the Ethernet cable.


Grounding with AUX-ODU-LPU-L

AUX-ODU-LPU-L is an optional accessory which may be used to serve as a line protection unit for the ODU and for the indoor network equipment connected to the Ethernet port of the IDU. AUX-ODU-LPU-L should be properly assembled, mounted and grounded.

General recommendations for installations of lightning protection units:

  • Install the lightning protection unit on both ends of the cable to protect both the outdoor and the indoor unit. The purpose of the LPU at the top is to protect the ODU from a surge of lightning strike which can hit the long FTP cable run along the height of the pole or on the roof of the building. The purpose of the LPU at the bottom is to protect the IDU and customer equipment.
  • Use the lightning protection unit to protect all circuits for signal transmission and power supply (video, audio, management signals, Ethernet, etc.)
  • Regularly (especially before the periods with high thunderstorm activity) check the integrity of lightning protection units, grounding elements and bonding conductors.

Make sure to install the two LPU devices as shown in the scheme below.

 AUX-ODU-LPU-L is installed on a mast, using clamp. Attach the grounding cable (min cross-section 2.5 mm2) to the case, using grounding bolt.

During AUX-ODU-LPU-L mounting it is necessary to provide a small loop of the FTP cable that should be below the cable gland. This ensures that water is not constantly channeled towards the connector. It will also serve as a cable compensation for the cable linear expansion as the temperature difference result.

Grounding with AUX-ODU-LPU-G

AUX-ODU-LPU-G – additional lightning protection device for outdoor using, compliant with GR-1089. Not included in standard packing list.

Installation principles:

  • Check the integrity of lightning protection devices grounding elements and bonding conductors sometimes, especially before the thunderstorm season start.
  • For maximum protection of the wireless device, power supply and customer LAN devices, use two AUX-ODU-LPU-G lightning protection unit, connected as it is shown at scheme below.
  • The purpose of the LPU at the top is to protect the wireless device from a surge of lightning strike which can hit the long FTP cable run along the height of the pole or on the roof of the building. The purpose of the LPU at the bottom is to protect the power supply and customer equipment.
  • Install the first LPU as close as possible to the ODU, the second - to power supply.

 AUX-ODU-LPU-G can be installed on a pole, using hose clamps. Attach the grounding cable (min cross-section 2.5 mm2) to the case, using grounding bolt.

Make sure a small loop is provided during AUX-ODU-LPU-G devices installation. A loop must be below cable entry. The loop is necessary to make water (precipitation, condensate, etc.) flows along it. It will also make a cable compensator function for linear cable expansion in case of temperature differences.


Lightning protection using AUX-ODU-INJ-G

AUX-ODU-INJ-G is an outdoor DC injector with the built-in lightning protection. It greatly reduces a complexity of the deployment in the cases where DC source is available on the rooftop, eliminating the need of weather-sealed cabinets and thus reducing both capital expenditure and total cost of ownership.


4. Aligning antennas

Prior to alignment, ensure that the following parameters are available: 

  • Azimuth and elevation values computed by the radio planning tool.
  • Location of both sites (latitude and longitude).
  • Prediction of receive signal level for both ends of the link.
  • Prediction of link loss.

InfiPLANNER provides all of these parameters in the form of an installation report.


NOTE 

The action of tightening mounting bolts can alter antenna alignment. This can be helpful when fine-tuning alignment, but it can also lead to misalignment. To prevent misalignment, continue to monitor receive signal level during final tightening of bolts. 


To align antennas, proceed to steps below:

  • The signal should be tested in both directions, one at a time. After the initial alignment, at the remote site (for instance), lock the antenna on place and using the Antenna Alignment tool, the team at the local site should start to change the antenna azimuth slowly while watching the radio parameters of the link. 
  • Once an optimal position is found (Input Signal stripes must be in the black area, closer to its center), the elevation angle should be modified and verified.
  • When the best signal is found, the antenna is firmly fixed on place and the other team should be informed to start doing their alignment in the same way as the first team. 
  • Recommended CINR and RSSI parameters values:
    • CINR: >= 28 dB. 
    • RSSI: from -60 to -40 dBm.

NOTE 

Antenna alignment can be done by LED indication in case of connection to the device is absence.


Antenna Alignment indicator description is listed below.

5. Link performance optimization

Link optimization methods are described below.

  • Method 1

Depending on the values for CINR, RSSI change the following parameters:

    • Enable ATPC mode with setting "Target RSSI" value. The RSSI value of the master tries to engage the target range, the center value of which is the "Target RSSI".
    • Decrease/increase the Tx power level in order to have the CINR above 28 dB and the RSSI between -40 and -60 dBm.
  • Method 2 

Use the built-in Spectrum Analyzer tool in order to determine the best frequency and check the radiation levels in the installation area. Frequency should be left to "auto" in case of Instant DFS units (for unlicensed bands), or it should be set to a specific value (in countries where DFS is not mandatory) on the master unit after performing the Spectrum Analyzing test on both units.

  • Method 3

Select the most appropriate air frame period. A shorter frame period gives lower latency, but also has higher overheads. Using longer frame periods cuts down overheads, but increases the latency..

  • Method 4 

Enable "Short Cyclic Prefix" mode in order to mitigate inter-symbol interference due to multipath propagation environment.

  • Method 5 

Enable "Control Block Boost" mode that improves link availability in the most difficult propagation and interference conditions due to the radio frame with control information transfer at duplicate transmit power.

  • Method 6 

Enable "Instant DFS" that gives availability to change frequency without link interruption.

  • Method 7 

Monitor air block error rate by checking the "Acc TBER"  parameter in the "Status" page or in the "xginfo stat" command output and adjust the AMC strategy if necessary.

The "AMC Stratefy" may be changed depending on customer erquirements:

    • "normal" - represents a balance between the error rate and throughput values.
    • "aggressive" - lowers the thresholds in order to use higher modulation levels and thus increase the throughput.
    • "conservative" - assumes using higher CINR thresholds in order to minimize the error rate.

It is recommended to use "normal" strategy initially and adjust it based on target and actual TBER values.

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