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SKYWAY-GB-R SERIES
80 GHz Gigabit Ethernet
PTP Microwave Radio System
User Installation Guide
October, 2015
Rev 1.1
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Notice
This document contains information that is proprietary to Solectek Corporation. No part of this publication may be reproduced, modified, or distributed without prior written authorization of Solectek Corporation. This document is provided as is, without warranty of any kind.
Registered Trademarks
Solectek® is a registered trademark of Solectek Corporation. Other names mentioned in this publication are owned by their respective holders.
Statement of Conditions
The information contained in this document is subject to change without notice. Solectek Corporation shall not be liable for errors contained herein or for incidental or consequential damage in connection with the furnishing, performance, or use of this document or equipment supplied with it.
Information to User
Any changes or modifications of equipment not expressly approved by the manufacturer could void the user’s authority to operate the equipment and the warranty for such equipment.
Disclaimer In accordance with Solectek’s continuing efforts for improving its products, the information contained in this document is subject to change without notice. However, Solectek assumes no responsibility or liability for any errors or inaccuracies that may appear in this document. Copyright © 2014 by Solectek Corporation. All rights reserved.
Headquarters:
Solectek Corporation 8969 Kenamar Dr. Suite 113 San Diego, CA 92121 858.450.1220 (tel) www.solectek.com [email protected]
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Contents
Contents .....................................................................................................................................3
1. Product Overview.................................................................................................................6
1.1 Prior Knowledge............................................................................................................6
1.2 Message Statements ....................................................................................................6
2. Installation Overview ............................................................................................................7
2.1 General .........................................................................................................................7
2.2 Equipment Checklist .....................................................................................................7
2.3 Line of Sight ..................................................................................................................7
2.4 Link Distance ................................................................................................................8
2.5 Antenna Location ..........................................................................................................8
2.6 GB-R Cover Removal ........................................................................................................9
2.7 SFP Module Installation ....................................................................................................9
2.8 Cabling Considerations ...................................................................................................10
2.8.1 Fiber and Power ........................................................................................................10
2.8.2 Conduit ....................................................................................................................11
2.8.3 Integral PoE ..............................................................................................................11
2.9 Power Supply Connection ...............................................................................................16
2.10 Grounding & Lightning ...................................................................................................17
2.11 Environmental................................................................................................................17
2.12 Cabling Diagram ............................................................................................................18
3. Installation .............................................................................................................................22
3.1 General Overview ...........................................................................................................22
3.2 Unpacking Equipment.....................................................................................................22
3.3 Equipment Inventory .......................................................................................................23
3.4 Installation Tools .............................................................................................................23
3.5 Antenna Mount Installation .............................................................................................24
3.6 Antenna and Radio Installation ........................................................................................25
3.7 Cable Installation ............................................................................................................26
3.7.1 Fiber Cabling .............................................................................................................26
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3.7.2 Ground Cabling .........................................................................................................27
3.7.3 Power Cabling ..........................................................................................................27
3.7.4 PoE Cabling ..............................................................................................................28
3.7.5 10/100/1000 Base-T Surge Suppressor ....................................................................29
3.8 Antenna Alignment ..........................................................................................................30
3.8.1 Initial Equipment Checks and Configuration ..............................................................30
3.8.2 Prepare to Coarse-Align Radio..................................................................................31
3.8.3 Coarse-Align Radio Antennas ...................................................................................32
3.8.4 Fine Adjustment ........................................................................................................33
3.8.5 Locking Down Radio Antennas .................................................................................34
3.8.6 Final Configuration ....................................................................................................35
3.8.7 Roof-Mount Antenna Stability Test ............................................................................35
3.8.8 Clear Both Radios from Alignment Mode ..................................................................37
4. Radio Link Status Indicator ..................................................................................................38
4.1 Normal Operation ...........................................................................................................38
4.2 LED Functionality During Radio Operation .....................................................................39
4.3 Radio Cover Installation ...................................................................................................41
4.4 Connecting Network Equipment ......................................................................................41
4.5 Network Port Statistics .....................................................................................................42
5. 1+1 Protection / 2+0 OMT Installation ...................................................................................43
5.1 1+1 Protection Overview.................................................................................................43
5.2 2+0 OMT-80 Overview....................................................................................................44
5.2.1 2+0 OMT-80 .............................................................................................................44
5.3 Protection Product Configuration ....................................................................................46
5.4 Cabling Considerations ...................................................................................................46
5.4.1 Protection .................................................................................................................46
5.4.2 2+0 OMT-80 coupler ................................................................................................48
5.4.3 Cabling Diagram – Outdoor Radios to Indoor Equipment .........................................48
5.4.4 Cabling Diagram – Protection Active Radio to Standby Radio ..................................50
5.5 Changing Polarity on 1+1 Protection Couplers ...............................................................52
5.6 Antenna Mount Installation .............................................................................................53
5.7 RF Coupler Assembly and Radio Installation ..................................................................53
5.8 Antenna Adjustment .......................................................................................................58
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5.9 Cable Installation ............................................................................................................58
5.10 Protection Active and Standby Radio Cabling ................................................................58
5.13 2+0 OMT-80 Fiber Cabling ............................................................................................60
5.14 Antenna Alignment ........................................................................................................60
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1. Product Overview
The information in this guide is directed to persons who must perform or coordinate the tasks
associated with the process of installing wireless communication devices and planning
communication network applications.
The following sections describe installation of a 1+0 non-protected GB-R system, 1+1 Hot
Standby Protection (Protection) and 2+0 Orthogonal Mode Transducer (OMT-80) GB-R systems.
The appendices provide additional information for GB-R systems with any of these options.
1.1 Prior Knowledge
This guide assumes the operator has at least basic experience with, and an understanding of,
wireless technology; and some familiarity with configuring and operating networking equipment.
Preferably, the person installing this equipment fully understands the information covered in this
guide, prior to attempting these procedures.
1.2 Message Statements
NOTE, WARNING, and CAUTION statements have been placed in various sections throughout
this document to alert personnel of possible traffic-affecting issues, and to provide additional tips
and helpful information. These statements should be closely observed.
NOTE. Text accompanying this icon provides useful information and general tips.
WARNING Text accompanying this icon alerts the user to imminent dangers of injury and/or damage to equipment. The user is asked to stop any related operation.
CAUTION. Text accompanying this icon cautions the user about potential hazards of injury and/or damage to equipment.
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2. Installation Overview
2.1 General
Before the start of an installation, a survey should be conducted of the proposed area of the site(s). The survey personnel should be fully familiar with the details required to install the radio system.
2.2 Equipment Checklist
The survey team will need the following items:
• Binoculars (not always required)
• WAAS-capable GPS location device
• Tape measure – to determine the cable lengths • Digital camera (not always required)
• Signaling mirror (not always required)
2.3 Line of Sight
The GB-R 80GHz Wireless Gigabit Ethernet link requires Line of Sight (LOS) for proper
operation. Binoculars and spotting mirrors may be used to assist in the confirmation of LOS.
Path planning should include an investigation into future building plans that could block the LOS
path and other long-term incremental obstructions, such as tree growth. Intermittent
obstructions, such as aircraft at a nearby airport, should also be considered.
The following table lists near-field distances.
Near-Field Distances
Frequency/Antenna Low Band High Band
80GHz 1ft (30cm) 17.84 ft (5.43 m) 20.30 ft (6.18 m)
80GHz 2ft (60cm) 71.36 ft (21.75 m) 81.20 ft (24.75 m)
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The following table details the minimum of 60% of the First Fresnel clearance required at
80GHz from obstacles in order to ensure the radios will operate properly..
Path Lengths
(meters)
Minimum F1 Clearance
(meters)
Path Lengths
(miles)
Minimum F1
Clearance (feet)
1000 0.97 0.62 3.18
2000 1.37 1.24 4.49
5000 2.17 3.1 7.1
10000 3.06 6.2 10
2.4 Link Distance
Measurement of the link distance is important in estimating the link availability and calculating
the expected Receive Signal Level (RSL). This measurement can be performed using the
latitude and longitude coordinate readings from a Global Positioning System (GPS) device,
which is placed near the proposed locations of the antennas. Additionally, a GPS reading will be
required in order to comply with the FCC registration process.
The minimum 80 GHz link distances are as follows:
• GB-R with 1 foot antenna: 328 feet (100 meters)
• GB-R with 2 foot antenna: 1312 feet (400 meters)
Contact Solectek for details on link distance calculations.
2.5 Antenna Location
The optimum location for the antennas must be determined. The ideal location should provide
for ease of erecting and mounting the antenna, as well as providing unimpeded LOS to the
remote location. The following factors should be taken into account:
• Type of mounting—fixed or roof-safe pole mounting.
• Location of fiber and DC power wiring at ingress/egress of the building. • Length of cable runs.
• Confirmed earth grounding connection points.
• Obstructions, including allowances for tree growth.
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• Accessibility of the radio mounting location.
• Accessibility of the site during and after working hours.
WARNING - There is a finite incline and decline range of the elevation adjustment when installing the radio link. The mount can only accomplish ±45 degrees from the mechanical elevation adjustment.
2.6 GB-R Cover Removal
When the DC, RJ45, or SFP connections are required to be attached to the GB-R product, the Cover will need to be removed and re-installed when connections are completed.
2.7 SFP Module Installation
The Small Form-factor Pluggable (SFP) is a compact, hot-pluggable transceiver designed to support Gigabit Ethernet interface. It is a popular industry format. The GB-R product can accommodate up to 2 total SFP modules for Ethernet purposes. To guarantee seamless interoperability, the GB-R product may only be operated with the SFP types provided by Solectek. SFP ports 1 and 2 are reserved for Ethernet SFP modules and traffic. One port next to the two SFP ports is Port 5, a 10/100/1000 Copper interface (non-SFP).
The following figures illustrate the use of SFP modules. Note that you will hear a clicking sound
when the SFP module is inserted and locked in the receptacle.
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(LEFT) installing an SFP module. (RIGHT) Fiber cable connected to SFP module
2.8 Cabling Considerations
2.8.1 Fiber and Power
The installation site should be inspected to determine the run paths for the fiber cable and
power cable from the radio equipment to the termination point. Locations for roof penetration
should be identified. The routing and securing of all cables should conform to all applicable
codes and requirements. Depending on the likelihood of damage due to foot traffic or equipment
movement, cabling conduit may be required. The maximum cable run length, as specified for
the equipment being installed, must not be exceeded: refer to the following figures for cable
types and limitations.
The radio requires LC type connectors on multi-mode and single-mode fibers to properly
connect between the radio and the user’s network equipment. The network equipment end of
the fibers should be terminated with connectors that match the user’s network equipment fiber
interface.
Typical Gigabit Ethernet Fiber Cabling:
Fiber Cable Length
Cable Type
Up to 270 meters 62.5/125 µm
Up to 500 meters 50/125 µm
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Typical Gigabit Ethernet Fiber Cabling:
Fiber Cable Length
Cable Type
Single-mode Fiber Cable Length
9/125 µm SMF cable
10 km OC-12, OC-3 and GigE
When planning the DC power cable run from the DC power source to the radio unit, it is
required to use 12 or 14 gauge (AWG) cable to ensure adequate voltage at the radio. The
indoor and outdoor portions of the DC power cabling must conform to all respective indoor and
outdoor national and local electrical and building codes. Requirements may differ for the indoor
and outdoor portions of the cabling, and a grounded surge protector is normally required at the
point where the cable enters the building. The DC power cabling must consist of two 12 or 14
gauge, stranded conductors, based on your required cable run length.
The maximum cable length is dependent on the power consumption of the radio. The GB-R 80
has a DC input voltage range of ±37.5 to ±70 VDC.
2.8.2 Conduit
Conduit is recommended for enclosure of the fiber/copper and power cables as they enter the
radio. The conduit provides a water-tight entry to the radio, as well as any weather or physical
protection required by the cables.
The conduit should be flexible, waterproof, and non-metallic. An example of this is LIQUID-
TUFF™ UL Liquidtight Flexible Non-Metallic Conduit (Type LFNC-B) or equivalent.
Conduit should be 1 inch (25.4 mm) in diameter to match the radio's opening.
2.8.3 Integral PoE
The radio can accept DC power through the Copper 5 RJ45 connector to serve as a Power over
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Ethernet (PoE) interface, and / or to the 2-pin DC/power connector (which bypasses the PoE interface). Use an outdoor (plenum) rated (weather-protected) Cat5e cable to connect the PoE enabled source to the Copper 5 port on the radio via the RJ45 cord grip gland on the radio. The cord grip gland shall be tightened to (20 +/-2in.lbs.) if a cable is routed thru the cord grip gland.
NOTE - The PoE connection can also be used as a power backup for the DC power input. In this way, if a unit’s DC power fails, the unit will switch to the PoE power source. NOTE - The Cat5e cable RJ45 connector will NOT fit thru the Cord Grip Connector. Therefore, the Cat5e Cable shall be inserted thru the Cord Grip Connector prior to attaching the RJ45 Connector to the Cat5e Cable.
A service loop shall be created on the Cat5e cable and secured to a permanent location to
ensure sufficient cable length to enable the radio to be moved during service, prevent water
from following the Cat5e cable down to the PoE, junction box, or building entrance, and to
prevent compromising the Gland connection. A suggested length is 24 inches (60 cm) from the
radio to the bottom of the service loop.
The radio is provided with a pre-installed cord grip gland and gland plug for a water-tight seal to
the radio.
If any cables are NOT routed thru the cord grip gland, the cord grip gland shall be sealed using
the cord grip plug (white part in the pictures below) by firmly pushing the plug inwards while
tightening to (20 +/-2in.lbs.) The following shows the cord grip gland assembled and
disassembled.
Conduit installation is done along with power and fiber/copper cabling installation as needed.
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Before connecting the conduit to the fitting, insert the fiber and power cables through both the
conduit and the straight-through fitting of the radio.
Installation
Conduit installation is done along with power and fiber/copper cabling installation as needed. The radio is provided with a pre-installed liquid-tight connector for a water-tight seal to the radio. The following shows the connector assembled and disassembled.
Once the power and fiber/copper cables are pushed thru the flexible conduit, the next step is to prepare the grey conduit gland. Before connecting the flexible conduit onto the grey conduit gland, unscrew the gray cap from the gray threaded connector remove the black rubber seal cap, yellow ferrule, and clear barbed barrel. Slide the gray cap and yellow ferrule over the outer jacketed flexible conduit ensuring to keep the same orientation when removed from the radio housing. At this point, you can discard the Black rubber seal cap. Press the clear barbed barrel fully into the end of the inner jacketed flexible conduit. Insert the cables ends from the flexible conduit through the grey conduit gland and route to their appropriate locations within the radio housing. Carefully insert the flexible conduit into the grey conduit gland on the radio housing ensuring not to pinch any of the cables routed thru the conduit. Carefully slide the yellow ferrule over the outer jacketed flexible conduit into the grey conduit gland on the radio housing while firmly holding the flexible conduit against the radio housing connector port. Next, slide the gray connector cap onto the grey conduit gland and slowly hand tighten the gray cap while firmly holding the flexible conduit against the radio housing connector port.
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NOTE - As the grey connector cap is tightened fully, the yellow ferrule compresses
against the flexible conduit outer sleeve over the clear barbed barrel sealing the
assembly for water ingress.
A service loop shall be created on the Conduit and secured to a permanent location to ensure sufficient cable length to enable the radio to be moved during service, prevent water from following the conduit down to the junction box or building entrance, and to prevent compromising the Gland connection. A suggested length is 24 inches (60 cm) from the radio to the bottom of the service loop. The opposite end of the conduit is inserted into the cable tray if on a tower or onto the NEMA or junction box.
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The first tie provides the first anchor and strain relief. Gentle curves provide the necessary
radius for the fiber to minimize signal loss and eliminate sharp angles lessening voltage
potential from being induced during lightning storms.
With a short conduit, the radio's opening has been moved further away and moisture is unable
to migrate into the radio.
Tower Installation
Secure the conduit with suitable braces to ensure long-term performance. The total length of the
conduit should be a minimum of 10 feet (3 meters), but the length required to reach the cable
tray is site-specific.
Once the cables are installed, seal the conduit opening for additional protection from insects
using amalgamated tape or sealant.
All cables used should be outdoor-rated.
Below the conduit, secure the cables approximately every 1.6 feet (1/2 meter) onto the tower's
cable tray. Running the cables to the cable tray is recommended to provide additional
environmental protection.
Roof-Top Installation Secure the conduit with suitable braces to ensure long-term performance. Terminate the network end of the conduit into a NEMA enclosure or junction box. Terminate the conduit at the NEMA enclosure by either:
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• Drilling a hole in the bottom of the NEMA box for the fitting; or • Removing one of the built-in conduit punch-outs if provided on the NEMA box.
Use amalgamated tape or sealant to create a watertight seal at that junction.
2.9 Power Supply Connection
The radio power input connector is powered off the end customer-supplied “+” or “-” 48VDC power source.
NOTE - The end customer shall ensure they have a method of disabling the DC Power to the Radio prior to connecting or disconnecting any Voltage lines to the Radio.
To remove the DC power wires, simply press a flat blade screw driver into the slots on the connector and pull the wires upward to remove.
As an alternative to the 2-pin DC/power connector, use the Copper 5 RJ45 connector for PoE. Connect the PoE enabled source to the Copper 5 port with an outdoor-rated Cat5e cable. This can also be used to back up the 48VDC power if a unit’s DC power fails. The 48VDC power acts as the primary source, and if a power failure occurs, the unit switches to the PoE power source.
NOTE - The DC power input will always override the Power Source Equipment
(PSE) for the PoE. If the DC power input fails, the PSE/PoE detects the power loss
and activates the PSE to power the system. Both sources must be connected for
this operation to work as described.
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2.10 Grounding & Lightning
WARNING - Proper grounding of the outdoor equipment reduces electromagnetic
interference, provides lightning protection, and protects against electrical discharge.
Using improper techniques in lightning-prone geographic areas may pose a danger
to local personnel.
WARNING - The source and connection points for the building-to-earth ground in
the vicinity of the antenna location should be determined.
Customers can add additional surge protection to the DC electrical cables by adding a surge suppressor. The surge suppressor should be installed before entry point where the DC electrical cables exit/enter the building. Please review your local electrical codes. Solectek does not supply external surge suppressors as part of the GB-R package. Solectek’s suggested surge suppressor is Smith Power’s Transtector DC Surge Protector, part number 1101-1110, shown below. Pole-Mount Bracket: 1000-1164 sold separately.
2.11 Environmental
The structure to which the equipment will be mounted should be adequate to bear all wind and weather conditions. The environmental conditions at the location must conform to the operating environment specified for the equipment. Operating Temperature: -33ºC to +55ºC (-27ºF to +131ºF) per EN 300 019-2-4 Humidity: 100% all-weather operation Operating Altitude: Up to 5,000m (16,405ft) Water Ingress: IP66
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2.12 Cabling Diagram
The following figure details the equipment and cabling found on a typical installation of a GB-R link.
The following figure details the equipment and cabling found on a typical installation of GB-R
radio equipment. Use of the copper port is optional and is not required for Web interface access
or for normal data traffic operation.
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The following figure details the equipment and cabling found on a PoE installation of GB-R radio equipment. Only one outdoor-rated Cat5e cable is required per radio to handle power and data.
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The following figure details the equipment and cabling found on an installation of GB-R radio equipment with dual power with 48VDC as the primary power source and PoE as hitless power backup.
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3. Installation
3.1 General Overview
It is recommended that installation personnel read this section in its entirety prior to installing the GB-R System. During a particular phase of installation, the user may refer directly to the applicable subsection. The Installation section is comprised of the following subsections covering the procedures and
guidelines for installing the radio.
3.2 Unpacking Equipment
The radio system equipment will arrive in three boxes—two boxes for the two antenna and
mounting kits and one box containing the radio units (one low-band and one high-band). Locate
the correct box (low band or high band) before beginning installation by checking the label on
the outside of the box or on the radio itself. It is recommended that the shipping cartons and
packing materials be retained in the event that it is necessary to return any equipment.
NOTE - The radiated polarity can be identified on unpacked radios by the first letter of the polarity, V or H (Vertical or Horizontal), on the top of the unit handle or by the polarization labels. See figures in the following sections for further details.
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3.3 Equipment Inventory
Following are inventory lists for a typical system:
Radio Terminal Packing List
Qty. Description
1 ea. GB-R 80GHz radio unit (1 low-band transmit unit or 1 high-band transmit unit)
1 ea. Quick Start Guide
2 ea. Antenna and mount kit
1 ea. RSL / Quality test cable
NOTE - Installation in harsh environments, it is generally suggested to use Teflon grease on all bolts prior & post installation to help mitigate antenna mount assy corrosion. e.g. DuPont Teflon Severe Service Grease
WARNING - The radio is sealed at the factory warranty stickers on the inner (metal) cover of the radio. There is no need to open this cover in the field. Tampering with these seals will void the warranty.
3.4 Installation Tools
The following tools are required for installing the radio and the antenna:
• Torque Driver (0-25 in. lbs.) for radio unit for the following items: o Screwdriver, slotted 0.1 inch wide (Cover Thumb Screws) o Open-end wrench 8mm or 5/16 (Chassis Earth Ground Connection) o Open-end wrench 7/8 (Cord Grip Connector)
• Open-end wrench 9/16 inch (Radio to Antenna Screws)
• Open-end wrench 1/2 inch (Various locations) • Ratchet with 6 inch extension and 9/16 inch deep socket (Radio to Antenna Screws)
• Wire stripper/cutter/crimp tool (10-16 gauge)
• Electrical tape
• Fish tape (draw wire) for pulling cable
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• Cable tie wraps
• Hand-held digital voltmeter (DVM) with standard banana-plug receptacles
• Allen wrench 3/16 inch (depending upon Antenna Mfg, maybe be supplied with Antenna) • Signaling mirror (optional)
• DOW Corning 111 Valve Lubricant & Sealant or equivalent (for antenna o-ring gasket)
3.5 Antenna Mount Installation
For antenna mount installation instructions, please refer to your antenna manufacturer’s
installation guide to perform the following:
1. Assemble the antenna mounting hardware.
2. Mount the antenna to the mast.
WARNING - Read these instructions before beginning the installation. Caution should be used. Qualified persons experienced with antenna assembly and installation are required for installation. Solectek disclaims any responsibility or liability for damage or injury resulting from incorrect or unsafe installation practices. WARNING - The antenna has been formed to a very close tolerance parabolic
shape. Careful handling and assembly is required to avoid denting the reflector,
which would degrade antenna performance.
WARNING - When using the left-side radio mount position, the antenna gets rotated by 180 degrees. The drain hole must be open at the bottom and closed off at the top of the antenna to prevent water ingress.
With 2 FT antennas, move the bottom drain-hole plug to the top drain-hole position. With 1 FT antennas, plug the original drain hole using common, industrial RTV sealant. Then drill a new drain hole at the bottom, of the radome, 3/8” in diameter and ½” up from the edge of the radome, making sure not to drill deeper than ¼” to avoid hitting the reflector inside.
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3.6 Antenna and Radio Installation
WARNING - It is critically important during installation to ensure the radios on each side of the link are in the same polarization (horizontal-horizontal or vertical-vertical). A link that has a radio on one side of the link set in the horizontal polarization and the other side of the link set in the vertical polarization will not operate properly.
It is also critically important that a high-band radio is paired with a low-band radio to ensure the
system will operate properly. Prior to installation, check each radio to verify one is a high-band
and the other is a low-band version. The label on the radio will indicate the band (blue for high
or red for low).
Be sure to remove the protective plastic cap from the antenna port before installing it:
To prevent the O-ring gasket on the antenna port from getting brittle, and to allow an easy
connection to the antenna, sparingly lubricate the O-ring. Recommended lubricant is Dow
Corning 111 valve Lubricant & Sealant.
Remove the
plastic cap
Lubricate
O-ring.
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1. Install the antenna and radio:
The first letter of the designated polarization is stamped onto each unit to identify orientations when the polarization mark is positioned on top:
“H” for horizontal polarization.
“V” for vertical polarization.
Figure: Unit mounted in horizontal polarity
2. The units have four (4) captive 3/8-16 bolts attached to the radio housing. Verify these bolts with lock and flat washers are in place.
It is important that all four bolts are tightened evenly (hand-tight, 1 to 2 turns each, until the lock washer is flattened).
Then, use a 9/16-inch open-end wrench to tighten and secure the bolts.
Figure: Unit mounted in vertical polarity
3.7 Cable Installation
3.7.1 Fiber Cabling
1. Install the desired SFP modules in the radio with duplex MMF or SMF fiber from the radio to the network termination equipment (switch or router with 1000Base-X port or SONET/SDH equipment). The cable should be looped around the inside of the enclosure to provide strain relief.
The connectors on the radio end of the fiber require a duplex LC connector; the connectors
on the switch/router end should mate to the network equipment.
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2. Connect fibers at the network equipment.
3.7.2 Ground Cabling
NOTE - IT IS VERY IMPORTANT THE GROUND CABLING SECTION IS COMPLETED BEFORE APPLYING ANY DC VOLTAGE TO THE UNIT.
The required method for grounding the radio unit is to ground the mast to a ground source, because this provides the largest grounding surface contact possible. Also, attach an 8 AWG (solid) copper (or equivalent) ground wire to the ground stud on the Radio and secure the other end to a known earth ground. Refer to local regulations for proper grounding procedures. Attach the ground lug to the m5x.8 grounding screw on the radio chassis and securely tighten to (15+/-2in.lbs.) using an 8 mm (5/16 inch) wrench.
3.7.3 Power Cabling
1. Ensure the DC wire used is two-pair 12 gauge or 14 gauge, and the cable length is appropriate for the power consumption of the radio.
2. Install the DC power cable and attach it to the primary power source. Do not connect the power wires to the radio at this time. Inserting a small screwdriver or blade tool into the slot on the connector releases the wire. (The tool can also be used to hold open the connector for wire insertion.)
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3. Inserting a small screwdriver or blade tool into the slot on the DC connector will hold open the connectors for wire insertion. (The tool can also be used to hold open the connector to release the wire.)
NOTE - The fiber and power cables are inserted through the straight-through fitting
before the 1 inch flexible conduit is connected to the fitting. Ensure that the cables
do not get pinched when the conduit is pushed onto the fitting. Both cables should
be looped around the inside of the enclosure to minimize tension on the cables
when connected to the radio and to maintain proper bend-radius of the fiber cable. See the
figure below for illustration.
NOTE - If only the 1 inch conduit fitting is used (and the cordgrip RJ45gland is not used), the cordgrip opening should be sealed with the included plug.
3.7.4 PoE Cabling
1. Ensure the PoE cable used is outdoor (plenum) rated (weather-protected) Cat5e, and the
cable length is appropriate for the power consumption of the radio. Maximum Cat5e cable run is
100m/300ft.
2. Route the Cat5e cable through the cordgrip on the unit and attach it to the PoE labeled Radio
interface port. Do not connect the PoE Cat5e cable to the radio at this time.
Reset
Button
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3. Secure the PoE Injector at base of tower or near building entry. Terminate the site ground
cable to the PoE Injector’s grounding. Then apply the DC input voltage lines to the PoE injector
to power up the Radio.
4. Hitless redundant power capability, when both power inputs connected (PoE & Auxiliary).
5. To remove the PoE cables, reverse the order noted above.
3.7.5 10/100/1000 Base-T Surge Suppressor
The GB-R radio internally contains an Ethernet-rated surge suppressor within the RJ-45 copper
interfaces of the unit.
A surge suppressor should also be used at the point where the cable enters a building or is
connected to other outdoor equipment that does not already contain surge-suppression
hardware.
If the 10/100/1000Base-T port is permanently connected to other network equipment (not
normally required), it should be connected using Cat5e UTP cables rated for the outdoor and/or
indoor environments where the cables will be run.
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NOTE - Failure to install surge suppression hardware on the UTP cable at the building’s point-of-entry can expose the radio and network equipment to electrical surges due to lightning strike or other phenomena. Such electrical surges could cause irreparable damage to the radio and/or network equipment not covered by the manufacturer’s warranty.
3.8 Antenna Alignment
3.8.1 Initial Equipment Checks and Configuration
1. Finish the installation, as described in previous sections.
2. Inspect the radio polarization. Confirm that the polarity matches the site design and license.
Both ends of the link must have the same polarity.
3. Connect DC power or PoE to the radio. If DC power is connected, verify that the Power LED
is lit solid green. If PoE is connected, verify that the PoE LED is lit solid green. If the Power or
PoE LED is not lit, carefully use the voltmeter to verify the correct voltage and polarity at the
radio connector. Turn off the power source before making any corrections.
4. Log into the GB-R Web interface and go to the Radio Link page. Configure the following
parameters in the following order:
• Link ID . Set to a value that matches at both ends of the link.
• Rate . Set to the desired channel bandwidth and modulation per the link design.
• Transmitter . Set to Enable.
• Transmit Channel . Set the channel to the frequency specified in the link design or site
license.
• ATPC Mode . Set to Manual. The Max Tx Power parameter will then be configurable.
This also prevents the transmitter from adjusting while the far-end receiver is being
aligned.
• Max Tx Power . Set to the maximum allowable power specified in the site design or site
license.
• Adapt Rate (Available only if licensed) – Set to Disable. This prevents unintentional
switching during alignment.
NOTE - For short links where the calculated RSL exceeds -20dBm, the RSL voltage enters the un-calibrated region making it difficult to find the peak RSL voltage. The solution is to lower the Max Tx Power to 0 dBm or to a calculated level in which the far-end target RSL equals -40 dBm.
5. Click the Submit button in the screen to apply the changes.
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6. Repeat steps 1 through 0 on the far end of the link.
3.8.2 Prepare to Coarse-Align Radio
1. Using the graph in Appendix B, determine the target RSL voltage based on the target receive level in dBm established by the link design or site license. 2. Remove the protective cover from the BNC connector on the radio.
NOTE - The target RSL should be adjusted accordingly if the transmitter power was reduced for alignment purposes due to short path distance.
3. Connect the RSL test-lead cable to the BNC connector and place the voltmeter with readings in view. 4. Insert the Ground (GND) and RSL banana plugs into the voltmeter.
NOTE - The RSL voltage: The voltage may be fluctuating; in this case, note the maximum value seen.
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5. Set the meter for DC volts and place on the x20 scale. 6. Confirm that the Alignment Mode LED is “flashing blue”.
NOTE - This indicates that the radio is in Alignment mode, in which ATPC is turned off, and the transmitter is fixed at the user-defined Power Output level. This provides a stable transmit power for when the far-end receiver is being aligned. The far-end unit’s Alignment Mode LED must be blue when you align the local receiver.
If the Alignment Mode LED is not “flashing blue”, put the radio into Alignment mode by pressing the Reset button on the radio and holding for approximately 2 seconds.
7. Reference your antenna manufacturer’s installation guide for an illustration of the antenna-mount bolts and their purpose. 8. Repeat steps 2 to 7 on the far-end radio.
3.8.3 Coarse-Align Radio Antennas
1. Set the radio terminal to the pre-defined azimuth if available. If not, use binoculars or a signal mirror to locate the far-end radio location.
Reset
Button
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2. If you can see the far-end radio terminal, estimate the alignment visually and tighten the pole mount brackets with the fine-adjustment bolt set to the middle of the adjustment range. 3. Ensure the horizontal adjustment bolts are snug; only tighten the bolts one quarter of a turn. 4. Slightly rotate each antenna up or down for best vertical alignment, and left or right for best horizontal alignment, by finding the maximum RSL voltage reading. 5. To ensure that the antennas are not aligned on a side lobe, they must be rotated about 7 to 10 degrees on each side of the perceived alignment center to ensure that the true maximum RSL voltage is found.
NOTE - The width of the center beam is only 0.4º (2 foot antenna) or 0.9º (1 foot antenna), and the first side-lobe beam is only 1 degree off from center.
Set the antenna in the position resulting in the highest RSL voltage reading. 6. Repeat these steps on the far-end radio.
3.8.4 Fine Adjustment
1. Slightly loosen the azimuth fine-adjustment bolt. 2. Pan the antenna slowly from left to right and capture the highest RSL voltage peak. 3. See the Figure below to help guide you in obtaining the highest RSL voltage reading. 4. Tighten the azimuth adjustment bolts. 5. Loosen the two bolts holding the antenna elevation position to the antenna mount. 6. The elevation fine-adjustment bolt is not designed to be tightened: use the hex nut to fine-adjust (and course-adjust) the elevation (vertical position) to the highest RSL value. 7. While monitoring the voltmeter, begin to align the vertical position of the antenna to obtain the highest RSL voltage. 8. Once completed, this fine adjustment must be repeated at the remote end of the system if you have not obtained the target RSL voltage for the given path distance. 9. If you have not obtained the target RSL voltage for the given path distance (or you want to further improve it), re-align the antenna, go back to the original site you started with, repeat steps 1-8, and re-align again. See the Figure below, of a conceptual illustration of the antenna beam to keep in mind while you perform a re-alignment.
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10. Once again, the very narrow beam width of these antennas (0.4º and 0.9º) makes it necessary to completely tighten the bolts of the azimuth adjustment while adjusting the elevation, and vice versa.
This illustration is a conceptualized cross-section of a beam to exemplify a horizontal RSL voltage reading against relative locations with an assumed fine-tuned vertical position. Keep in mind how narrow the beam is at 80 GHz; the 3dB beam width for 80 GHz is 0.9º for a 12 inch antenna and 0.4º for a 24 inch antenna.
3.8.5 Locking Down Radio Antennas
Target Voltage
Possible“First Try”
Common
“First Try”
Below Target Voltage
Possible
“First Try”
Center Location
Possible
“First Try”
Main Beam
First Side-lobe
Second Side-lobe(sometimes undetectable)
Nulls
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1. After the target RSL voltage has been achieved, ensure all bolts are tightened evenly and securely, and ensure the RSL voltage remains unchanged after tightening is completed. 2. Always evenly tighten the bolts in small fractions at a time to ensure minimum change to your completed alignment.
3.8.6 Final Configuration
1. Log into the radio Web interface and go to the Radio Link page. 2. Set the Power Output level to the value specified in the link design or site license and click Submit to apply the changes. This should only be required if the power level was intentionally reduced for alignment on short distance paths. 3. Go to the Maintenance page and click the Commit Configuration button. 4. Perform steps 1 through 3 at both ends of the link.
3.8.7 Roof-Mount Antenna Stability Test
NOTE - This procedure is recommended for roof-mount radio systems to verify that the structure used for mounting the radio antenna has a limited amount of sway.
After the radio system has been fine-tuned and locked down to the target RSLs, perform the following procedure to test the minimum amount of sway allowable for a fully installed radio system on roof-mount applications by applying a pull force of 50 pounds at the antenna location.
A luggage belt and a luggage weight scale are required for this test:
Luggage Belt: Luggage Weight Scale:
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Refer to the illustrations below while performing the procedure which follows.
Pull until scale reads 50 pounds.
Monitor voltage.
1. Place the luggage belt around the mast just above the antenna mount. 2. Connect the luggage weight scale to the luggage belt. 3. Record the RSL voltage displayed on the voltmeter connected to the radio. This should be the target RSL value. 4. While monitoring the voltmeter, pull the luggage scale in any direction until the scale indicates 50 pounds and record the RSL value once 50 pounds is reached. 5. Compare the RSL value recorded during the pull test with the target RSL value. The difference between the two values should be less than +/-150 mV for a radio unit with a 1 foot (30 cm) antenna and less than +/-75 mV for a radio unit with a 2 foot (60 cm) antenna. 6. Remove the test cable from the radio and replace the BNC connector cover.
NOTE - Failure to re-install the BNC Connector cover could cause environmental issues with the Radio which would not be covered under the manufactures warranty.
7. The installation is now complete.
NOTE - The most important alignment technique is care and patience! It is recommended that these models be aligned with personnel present at both ends of the link, and the installers should allow 90 minutes to optimally align these units.
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3.8.8 Clear Both Radios from Alignment Mode
1. ATPC is optional but not required. 2. Therefore, if the link design calls for the use of ATPC then Alignment mode must be disabled so that the transmitter power is allowed to adjust up and down. 3. Press the reset button for approximately 1 second and verify that the Alignment Mode LED on the radio turns from “flashing blue” to off. 4. Perform steps 2 and 3on the far end of the link and confirm that the Alignment Mode LED is off. At this point, open the Status page from the unit's Web interface and ensure the Radio TX and RX is operating at the expected rate, either 100Mbps or 1000Mbps, for both radios 1. Go to the Statistics page and reset the statistics for each radio end. 2. The customer will not be able to ping across the link until they properly configure their VLAN configuration. The current defaults do not allow traffic to flow over the link when at a default state. 3. Once their VLAN is properly configured, perform a ping test: Open two command-line windows, and ping the local and remote radio Web interface. Factory default IP addresses are: 192.168.0.1 for low-band and 192.168.0.2 for high-band. Perform a ping to both ends and wait a few minutes; ensure you are getting responses from the local and remote Web interface. 4. Review the Statistics page results; ensure packets are being transmitted and received, and there are no excessive error conditions.
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4. Radio Link Status Indicator
4.1 Normal Operation
During normal operation, the following conditions should exist at the radio:
• The Power LED should be lit—solid green.
• The Mode LED should be OFF.
• The Radio Link Up LED should be lit—solid green.
• The Alarm LED should be lit—solid green.
• The Link Quality BER voltage normally should be 3.0-3.3V when it is not raining.
The GB-R system does not require periodic maintenance. However, each end of the link should
be periodically inspected for visible damage or excessive accumulation of dirt on the antenna’s
radome.
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4.2 LED Functionality During Radio Operation
The following lists LED functionality during radio operation.
LED Functionality During Radio Operation
LED Indication Condition
Alarm Solid green No alarms
Sold yellow Minor alarm. Modem temperature below -20°C or above 75°C.
Solid red Critical or major alarm. Can be one of following conditions:
- Field Programmable Gate Array (FPGA) not programmed
- Modem input voltage out of spec
- TX Intermediate Frequency (IF)/millimeter wave (mm-wave) local oscillator (LO) lock failure
- RX IF mm-wave LO lock failure
- At least one power supply on IF board not operating properly
Radio Link Solid green Radio link up, error free
Solid yellow Post FEC errors in radio link
Off Radio link down
Mode Off ATPC is enabled (Automatic mode)
Blinking blue ATPC is disabled (Alignment/Manual mode)
Solid yellow Transmitter is muted, by configuration or maintenance condition
Solid red When Reset pushbutton is pressed and held down between 11-20 seconds, Mode LED turns solid red. Pushbutton release in this state performs hard restart of the GB-R Web interface with current configuration settings maintained.
Blinking red When Reset pushbutton is pressed and held down between 21-30 seconds, Mode LED blinks red. If pushbutton released in this state, configuration is returned to default settings, and hard restart of GB-R Web interface is performed.
Power Off No or inadequate power to radio
Solid green Adequate power to radio
Tx/Rx Off Normal operating condition
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LED Functionality During Radio Operation
Status/Activity Blinking green alternatively with Rx Status/Activity LED
1. Flash burn in progress after configuration changes, software/firmware upgrades, Syslog, or other reasons.
2. Acknowledgement of Reset pushbutton being pressed.
3. After power-up, within 30 seconds, indicates the time window during which the pushbutton being held down forces the boot loader to load the backup GB-R Web interface image.
4. After power-up, second blinking opens time window to perform defaulting of configuration by holding down the pushbutton.
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4.3 Radio Cover Installation
When the internal connections are completed and the product is fully operational and antenna is aligned, the cover shall be re-installed using the four thumb screws with EPDM washers. Ensure the cover orientation is correctly installed ensuring the enclosure gasket is fully covered. First hands tighten the thumb screws attached to the lanyard cable followed by a crossing pattern until all four thumb screws attached to the radio are seated.
Then firmly tighten the thumb screws to (15 +/-2in.lbs.) to ensure they are sealed properly.
4.4 Connecting Network Equipment
The networking equipment that will be connected to the GB-R system should be pre checked to ensure it operates properly back-to-back over a wired connection. Once this has been confirmed, it will save troubleshooting steps if a traffic problem arises after the radio is installed and connected to the network equipment. The 1000Base-X interfaces are factory pre-configured for auto-negotiation and flow control enabled. Auto-negotiation and flow control can be disabled via the radio Web interface
NOTE - The radios support all standard Ethernet frame sizes up to 10 kbytes for un-tagged or 802.1q VLAN-tagged frames.
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4.5 Network Port Statistics If the network connection capability exists for the radio system then verify the following:
• Link integrity.
• There are no receiving errors on the link.
• Network traffic is flowing in both directions.
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5. 1+1 Protection / 2+0 OMT Installation
This section describes installing a system with the one of the following redundancy options,
which consists of two radios mounted on an outdoor unit (ODU) coupler, with one antenna, on
each side of the link:
• Unequal-Loss Couplers for 1+1 Hot Standby Protection (Protection) – This coupler is recommended for Protection links.
• 2+0 Orthogonal Mode Transducer (OMT-80) – The OMT-80 provides a mechanism whereby each radio transmits and receives over independent polarities. One radio uses vertical polarity, while the other radio uses horizontal polarity. The OMT-80 is recommended for 2+0 links.
5.1 1+1 Protection Overview
1+1 Protection provides system redundancy that will take effect when a failure is detected: this
ensures system-level mitigation of local hardware problems.
Matching Ethernet and SONET/SDH ports on the active and standby radios are connected with
fiber splitters. In this way, both radios receive the same data from the customer.
NOTE - Radios equipped with copper SFPs cannot be protected and must be
reconfigured with optical SFPs to implement Protection configurations.
A dedicated port serves as the Protection port and connects both radios with a fiber cable. The
radios communicate their Protection status messages over this connection.
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A conceptual example of Protection active and standby radios configured with out-of-band
management, one Ethernet data connection, and Sync-E is shown below.
5.2 2+0 OMT-80 Overview
5.2.1 2+0 OMT-80
Each side of the link has two radios: one fixed in horizontal polarity and one fixed in vertical
polarity. This prevents interference by providing isolation between the signal paths from each
radio. One side of the link requires two high-band radios, and the other side of the link requires
two low-band radios.
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A conceptual example of OMT-80 GB-R radios is shown below.
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5.3 Protection Product Configuration
The illustrations below, and table which follows, reflect the required quantities for one link of GB-
R radios in the Protection configuration.
Example: Configuration with Ethernet fiber pairs, splitters, and SFPs·
• The local radio is shown with only one Ethernet connection for clarity of call-outs.
• This diagram assumes up to two multi-mode Ethernet fiber pairs per radio and a short 24 inch (60 cm) section of outdoor-rated Cat6a cable between radios for the 1+1 Protection interconnect. Alternatively, Ethernet can be implemented using single-mode fibers, splitters, and SFPs.
5.4 Cabling Considerations
5.4.1 Protection
NOTE - Protection is only applicable for fiber-optic, not copper, SFP modules.
The following describes cabling between the active and standby radios.
• Fiber splitters are used to connect the fiber cabling to the data ports (Ethernet and SONET/SDH) and Sync-E port between the active and standby radios, and to the customer equipment. Up to 4 Ethernet data (optical port) connections can be used (not
47
including Sync-E). On Sync-E radios, up to 2 SONET/SDH data (optical port) connections can be used: SONET/SDH Ports 1 and 2; Port 4 is used for Sync-E. In-band management with Protection requires Sync-E. On 4 TDM radios, SONET/SDH Ports 1, 2, and 4 can be used for SONET/SDH data.
NOTE - It is recommended to secure each fiber splitter inside a junction box using
a tie wrap.
• An outdoor-rated Cat6a cable is used between the Protection port on both the active and standby radios to relay Protection-related information.
• For in-band management configurations, the Protection connection can also be used to communicate in-band management, in addition to Protection communication.
• For out-of-band configurations: One Cat5e cable can be used between the copper port on the active radio and the customer equipment. Another Cat5e cable can be used between the copper port on the standby radio and the customer equipment. Alternatively, fiber cabling from Ethernet data ports on the active and standby radios can be used as an alternative to Cat5e cabling from the active and standby radio copper ports.
• Two multi-mode or single-mode fiber cables and a fiber splitter are used to connect the active and standby radio SyncE ports, and the customer equipment.
Ensure the transmit and receive fiber connections are inserted correctly into the SFP
connector to avoid Ethernet loop. The arrow markings engraved on the SFP connector
indicate the input and output direction, as shown below.
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Three 1 inch flexible conduit cables are used: one exiting the active radio to the junction
box, one exiting the standby radio to the junction box, and one exiting the junction box to
the customer equipment.
One conduit fitting is supplied with each outdoor unit.
5.4.2 2+0 OMT-80 coupler
Ethernet cabling between the two radios on each side of the link does not have to match. Two 1
inch flexible conduits are used for each side of the link (1 per radio).
If using PoE for Ethernet data, only one outdoor-rated Cat5e cable with RJ45 connectors is
required per radio. No fiber optic cable or flexible conduit is required.
5.4.3 Cabling Diagram – Outdoor Radios to Indoor Equipment
The following depicts an overview of link-to-link cabling from the outdoor radios to indoor
equipment.
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50
5.4.4 Cabling Diagram – Protection Active Radio to Standby Radio
The following illustrations depict a basic setup between the active and standby radios on one
end of the link. Power cabling is not shown.
• Out-of-band management with two Ethernet data connections and Sync-E connection:
NOTE - Fiber cabling from an Ethernet port to the customer equipment can be
used as an alternative to Cat5e cabling from the copper port.
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• In-band management with two SONET/SDH connections and Sync-E connection:
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5.5 Changing Polarity on 1+1 Protection Couplers
NOTE - This subsection applies only to Protection couplers and not the OMT-80,
because the OMT-80 has fixed polarity.
The 1+1 Protection RF coupler assembly has a pre-installed vertical polarity adapter. If
horizontal polarity is required, a horizontal adapter (painted black) is separately provided in the
accessory kit, which requires installation. To install, refer to the following illustration and
procedure.
NOTE - On installed radios, the polarity can be distinguished by checking the silver
or black ring between the outdoor radio and the coupler: vertical polarity is silver,
and horizontal polarity is black.
1. Use a 7/64 inch hex key to remove the 4 captive screws securing the vertical antenna adapter to the RF coupler assembly, then remove the adapter from the RF coupler assembly.
2. Remove the protective cap from the horizontal antenna adapter.
3. Sparingly lubricate the rubber O-ring seal on the horizontal adapter.
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4. Position the adapter on the RF coupler assembly so that the “H” polarity mark is pointing in the same direction as the “UP” mark on the RF coupler assembly.
5. Use the 7/64 inch hex key to tighten the 4 captive screws to secure the adapter to the RF coupler assembly.
5.6 Antenna Mount Installation
Install the antenna to the mast as summarized in the illustration and procedure below. For
details, refer to the 3.5 Antenna Mount Installation subsection.
For antenna mount installation instructions, please refer to your antenna manufacturer’s
installation guide to perform the following:
1. Assemble the antenna mounting hardware.
2. Mount the antenna to the mast.
3. Remove the protective plastic cap from the antenna port.
5.7 RF Coupler Assembly and Radio Installation
The following describes the recommended sequence, in which the RF coupler assembly is
attached to the antenna mounting assembly, and then one radio at a time is attached to the RF
coupler assembly.
NOTE - The local end of the link should have two high-band radios, and the
remote end should have two low-band radios – do not put high- and low-band
radios at the same end of the link.
To install the RF coupler assembly and radios, refer to the following illustration and procedure.
(The Protection option is shown below, but the installation sequence is the same for the
Protection coupler, 2+0 Splitter, and OMT-80, except where noted.)
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1. Remove the protective cap from the antenna adapter (on the RF coupler assembly).
2. Position the RF coupler assembly against the antenna mounting assembly so that the “UP” mark points up.
3. Tighten the four captive bolts in a star pattern to secure the RF coupler assembly to the antenna mounting assembly. On the OMT-80, these bolts will also be used to fine-tune the polarization skew.
NOTE - For the OMT-80, use a level while tightening the bolts to ensure the
coupler is vertically level.
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4. Attach the first radio to the RF coupler assembly.
NOTE - For the Protection option, note which radio is connected to the main port –
this affects Protection configuration.
• Position the radio so that the handle is on top. • For the Protection option, secure the main radio to the main port of the RF coupler
assembly, indicated by “MAIN”. The following illustrates the main port.
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• For the OMT-80 option, the radios can be differentiated by the polarity marking on either side of the coupler. The side with horizontal polarity is depicted below (vertical polarity would be visible on the opposite side).
• Secure the radio to the RF coupler assembly by tightening the four captive bolts in a star pattern.
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5. Attach the second radio to the RF coupler assembly.
• Position the radio so that the handle is on top.
• Secure the radio to the RF coupler assembly by tightening the four captive bolts in a star pattern.
6. For the Protection option, attach the polarity label to the RF coupler, as shown below.
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5.8 Antenna Adjustment
Adjust the antenna by course-aligning azimuth. For details, refer to your antenna manufacturer’s
installation guide.
5.9 Cable Installation
Refer to previous subsections for cable installation as follows:
• Protection option with Ethernet fiber pairs, splitters and SFPs used for Ethernet data
• 2+0 OMT-80 options
The remaining cabling subsections apply to all options.
5.10 Protection Active and Standby Radio Cabling
All data cabling is installed on matching ports between the active and standby radios using fiber splitters. Protection communication between the active and standby radios requires an outdoor-rated Cat6a connection between each radio’s Protection ports. The following instructions assume for out-of-band management, separate Cat5e cables from the Copper 5 ports on the active and standby radios are used for management. For in-band management, these cables are not required. The illustration below can be used as a reference while performing the instructions which follow.
Active Radio Cabling
1. Attach one end of an outdoor-rated Cat6a cable to the Protection port on the active radio. The
other end will eventually be connected to the Protection port on the standby radio to
communicate Protection-related information between the radios.
2. Attach one end of a single- or multi-mode fiber cable, with LC connectors, to the desired
Ethernet data port on the active radio. Another fiber cable will eventually be connected to the
same-numbered (matching) Ethernet data port on the standby radio. These cables will
eventually be terminated in a fiber splitter inside the junction box mentioned above. A third fiber
cable will eventually go from the fiber splitter to customer equipment. Repeat for an extra
Ethernet data or SyncE connection.
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3. For out-of-band management, attach one end of a Cat5e cable to the Copper Port 5 on the
active radio.
For in-band management, ignore this step.
4. Route the cable used for Protection communication through the straight-through cord grip
connector.
5. Install the power cabling on the active radio.
6. Ground Cabling subsection. 7. Route the Ethernet data, SyncE, Copper 5, and power cables through the 1 inch straight-through fitting. Then, attach the 1 inch flexible conduit to the fitting as described in Section 2. Route these cables, which will connect to the junction box, through this conduit. Standby Radio Cabling 1. Attach the end of the cable from the Protection port on the active radio to the Protection port on the standby radio (Protection communication). 2. Attach one end of a single- or multi-mode fiber cable with LC connectors, for each applicable Ethernet port or SyncE, on the standby radio. These connection(s) must match the Ethernet port(s) used on the active radio. These cables will eventually be terminated in a fiber splitter inside the junction box. 3. For out-of-band management, attach one end of a Cat5e cable to Copper Port 5 on the standby radio. For in-band management, ignore this step.
4. Install the power cabling on the standby radio.
5. Ground Cabling subsection. 6. Route the Ethernet data, SyncE, Copper 5, and power cables through the 1 inch straight through fitting on the standby radio. Then attach the 1 inch flexible conduit to the fitting as described in Section 2. Route these cables, which will connect to the junction box, through this conduit. Junction Box Cabling 1. Attach three conduit fittings to the junction box: one for the active radio to the junction-box entry, one for the standby radio to the junction-box entry, and one for the junction-box exit to customer equipment. 2. For each data and SyncE connection: a) Route the fiber cable from the active radio through one entry of the junction box and attach the fiber cable LC connector to one sleeve of a fiber splitter. b) Route the fiber cable from the standby radio matching port through the other entry of
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the junction box and attach the fiber cable LC connector to the second sleeve of the fiber splitter. c) Attach a third fiber cable with an LC connector to the third sleeve of the fiber splitter to eventually be routed from the junction-box exit to customer equipment.
NOTE - It is recommended to secure the fiber splitters inside the junction box using a tie wrap.
3. For out-of-band management, a) Route the cable from the active radio Copper 5 port through the junction-box entry designated for the active radio. b) Route the cable from the standby radio Copper 5 port through the junction-box entry designated for the standby radio. 4. Route the power cable from the active radio through the junction-box entry designated for the active radio; route the power cable from the active radio through the junction-box entry designated for the standby radio. 5. Attach 1 inch flexible conduit to both junction box entries. 6. Route the following cables through the junction-box exit: data and SyncE fiber cables from the third sleeve of the fiber splitters, Copper 5 port, and power. 7. Attach 1 inch flexible conduit to the junction-box exit.
8. Connect the fiber and Cat5e cables at the customer equipment.
5.13 2+0 OMT-80 Fiber Cabling
1. Install the desired SFP modules in the radio with duplex MMF or SMF fiber from the radio to the network termination equipment (switch or router with 1000Base-X port). The cable should be looped around the inside of the enclosure to provide strain-relief. The connectors on the radio end of the fiber require a duplex LC connector; the connectors on the switch/router end should mate to the network equipment.
2. Connect the fibers at the network equipment.
NOTE - If using PoE for Ethernet data, connect outdoor-rated Cat5e RJ45 cables from the Copper #5 port of each radio to the PoE enabled devices. No SFPs or fibers are required.
5.14 Antenna Alignment
1. Connect DC power or PoE to the radio. Verify the Power or PoE LED is lit. Repeat for the far end of the link.
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2. Set both the local and remote main/active radios in the link to Alignment mode: press the reset button for approximately 1 second and verify the Alignment Mode LED is “flashing blue” on both radios. 3. Configure parameters in the Radio Link page: Link ID, Rate, ARM, Transmit Channel, ATPC mode, Power Output, Transmitter. Submit to apply changes. Repeat on the far-end radio. 4. Prepare to coarse-align the radio: Connect the RSL test lead cable to the radio and place the voltmeter with readings in view. 5. Coarse-align the radio antennas. To ensure that antennas are NOT aligned on a side-lobe, sweep through at least 7° to 10° in azimuth and elevation to verify peaks and nulls of the side-lobes to find the “real” center alignment. Set the antenna in the position which results in the highest RSL voltage reading. Repeat on the far-end radio.
The following illustrates a cross section of an RF beam.
6. Fine-adjust the azimuth: capture the highest RSL voltage peak and make sure to identify the side-lobe peaks. Then, tighten the Azimuth lock bolts. 7. Fine-adjust the elevation: Loosen the Elevation lock bolts. Move the Elevation adjustment in quarter-turn increments and capture the highest RSL voltage peak. Make sure to identify the side-lobe peaks. Then, tighten the Elevation lock bolts. 8. For the OMT-80 option, fine-tune the polarization skew to align the local OMT-80 with the remote OMT-80 using the captive bolts, as shown below. Align one radio at a time. Use a 9/16 wrench to loosen all captive bolts, then rotate the radio/RF coupler assembly right or left, as needed, until the target RSL voltage is achieved.
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9. After the target RSL voltage is achieved, ensure all bolts are tightened evenly and securely; and ensure the RSL voltage remains unchanged after the tightening is completed. 10. In the Radio Link page, set Power Output to the level specified in link design or site license and submit the changes, then click Commit Configuration in the Maintenance page. Repeat for the far-end radio.
11. Clear all radios from Alignment mode.
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Appendix A Troubleshooting
The following table provides a summary of possible problems you might encounter while
installing a GB-R link, along with possible causes and their solutions.
Troubleshooting
Problem Possible Cause Resolution
No power to radio Wrong polarity of supply voltage Use a DVM to determine the polarity and voltage on the DC cable. (See section 0)
The supply voltage measured at the radio (when connected) is below minimum VDC specification
The cable run is too long or the cable gauge is too small. Shorten the length of the cable or use larger gauge cable. (See section 0)
RSL voltage lower than expected
Incorrect calculation of link distance
Verify that the calculation tool used and the GPS used both have the same annotation system (degree hours minutes seconds or degree with a decimal value).
Antennas aligned on side lobes Repeat antenna alignment procedure.
Radios set to different polarizations
Verify that both radios are mounted in the same polarization. (See section Error! Reference source not found.)
Installed two high or two low band radios in one link
Verify that one end of the link is high and the other end is a low band radio.
Test cable not inserted into test port on radio properly
Ensure test cable is completely inserted into the test port of the radio.
Make sure that you are using correct RSL voltage chart.
If chart is for a different product, consult the correct product guide.
Low link quality voltage Antennas are not aligned for maximum RSL
Verify antenna alignment, use instructions provided in appropriate sections.
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Troubleshooting
Interference This is unusual unless other radios using the same spectrum are co-located. Check for possible interference by turning off the radio at the other end of the link and verify the RSL voltage on the local site drops below 0.2V.
Test cable not inserted into test port on radio properly
Ensure test cable is completely inserted into the test port of the radio.
Cannot connect to radio network management agent (Web interface)
Incorrect IP address configuration on radio or PC
Verify Ethernet connections are up, verify IP address, check for IP address conflicts, clear ARP cache on PC.
Web interface access is blocked through one or more interfaces
Try accessing Web interface through other interfaces (fiber, copper, radio link).
Perform hard reset on radio unit. Attempt to access on default address via copper port.
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Appendix B RSL Voltage Chart
• RSL is not calibrated above -20 dBm.
• RSL tolerance is ±4dB below -20 dBm.
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Appendix C Reset Button
Performing Hard Reset
Hold the reset button down until the Alignment mode flashes blue to verify the reset is started.
Performing Hard Reset
Hold the reset button down for at least 25 seconds: the LEDs blink to verify the reset is started.
NOTE - It may take longer than the normal 40 seconds for the hard restart
operation to complete and the GB-R Web interface to become available. Hard
restart causes a brief link outage for 40 seconds.
Reset Button Functionality
The reset button performs different functions, based on a) the length of time the button is
pressed and b) whether it is pressed while the radio is running or starting up. These functions
are indicated by three LEDs: Tx Status Activity, Rx Status Activity, and Mode.
The Alignment Mode LED indicates different functions, depending on how long the button is pressed and held while the radio is running, as described below. Changing ATPC Mode
Alignment mode LED
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If the button is pressed, held then released between 1-10 seconds, the ATPC mode toggles between Manual and Automatic. The Alignment Mode LED turns “flashing blue” in Manual mode and turns off in Automatic mode. Hard Restart If the button is pressed and held between 11-20 seconds or when the LED turns RED then released, the radio performs a hard restart equivalent to the Web interface (the radio is restarted, and current configuration settings are maintained). The Alignment Mode LED illuminates solid red. Factory Hard Reset If the button is pressed and held between 21-30 seconds or when the LED flashes RED then released the Web interface is restarted (the radio is restarted and defaults to factory configuration settings).
NOTE - If the button is pressed and held between 30-60 seconds, no action
occurs.
