Solectek SKYWAY-EM Manuel utilisateur

SKYWAY-EM SERIES

Indoor, Long-Haul

PTP Microwave Radio System

User’s Guide

September, 2012

Rev 1.1

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.

SkyWay® 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, RBW assumes no responsibility or liability for

any errors or inaccuracies that may appear

in this document.

Software Version Number: Version 1.0

Headquarters:

Solectek Corporation

6370 Nancy Ridge Dr, Suite 109

San Diego, CA 92121

858.450.1220 (tel)

858.457.2681 (fax)

www.solectek.com

sales@solectek.com

About this Guide

This user’s guide provides information required for features, configuration and testing of Solectek

SkyWay-EM Series Licensed Microwave PTP links.

Contents of this Guide

This Guide is structured as follows:

Chapter 1: Product Overview

This chapter provides introductory information on the CM Series that includes a brief description of the

radio’s features, the contents of its packaging, and the radio’s general specifications.

Chapter 2: Connections and Setup

This chapter identifies the main radio ports and their functions, and provides cautionary information on

polarity, Interchangeability and cable gland connection.

Chapter 3: Configuring the Radio

This chapter provides configuration procedures using the radio’s Web GUI. These procedures include

setting up network management and configuring the optional serial connection.

Chapter 4: Testing the Radio on the Air

This chapter provides information on configuring the allowable parameters according to each of the 4

user selected radio transmitting modes.

Chapter 5: Alarms and Troubleshooting

This chapter provides basic information on identifying and resolving potential equipment alarms.

Typographical Conventions

Typographical conventions used in this user’s guide convey the following messages/alerts:

NOTE. Text accompanying this icon provides useful

information and general tips.

WARNING/STOP. 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.

Acronyms and Abbreviations

ACM Adaptive Coding and Modulation

ANSI American National Standards Institute

ATPC Automatic Transmit Power Control

CLI Command Line Interface – refers to both Serial access and SSH access

ETSI European Telecom Standard

FCC Federal Communications Commission

IDU Indoor Unit

IF Intermediate Frequency

In-band Communications which occur within the RF-Link established for payload

LTE Long Term Evolution

MTBF Mean Time Before Failure

NMS Network Management System

ODU Outdoor Unit

Out-of-band Communications which occur outside the RF-Link established for payload

PA Power Amplifier

POE Power Over Ethernet

QoS Quality of Service

RSL Receive Signal Level

RSSI Receive Signal Strength Indication

RTPC Remote Transmit Power Control – ETSI term.

Rx Receive or Receiver

TBD To be determined

Tx Transmit or Transmitter

Contents

Acronyms and Abbreviations.......................................................................................................4

Contents .....................................................................................................................................5

1. Product Overview.................................................................................................................6

1.1 SkyWay-EM RFU Key Features....................................................................................7

1.2 Functional Description...................................................................................................8

1.3 Configuration Options ...................................................................................................9

1.4 Transceiver Frequency Range....................................................................................14

1.5 System Level Specifications .......................................................................................14

1.6 Transmitter Features...................................................................................................14

1.7 Receiver Features.......................................................................................................16

1.8 Branching Unit (BU) Specifications .............................................................................16

2. Installing and Configuring RFU ..........................................................................................24

2.1 Installation Procedure .................................................................................................24

2.2 Basic Configuration.....................................................................................................30

2.3 Alarm and Troubleshooting .........................................................................................34

3. RFU Maintenance and Upgrade.........................................................................................37

3.1 Replacing a Transceiver .............................................................................................38

3.2 Replacing a Branching Unit.........................................................................................40

3.3 Replacing a Filter........................................................................................................42

3.4 Removing the RFU from the Rack ..............................................................................44

3.5 Replacing a Fan Assembly .........................................................................................46

3.6 Replacing an RF Cable...............................................................................................47

3.7 Field Upgrade Options .................................................. Error! Bookmark not defined.

4. Branching Unit Options ......................................................................................................49

1. Product Overview

This user guide describes the operation of the SkyWay-EM PTP microwave radio system. The

SkyWay-EM Series is part of Solectek’s broadband wireless product line, including backhaul,

last mile access and enterprise and video surveillance wireless transport.

The SkyWay-EM Series All-Indoor Radio is carrier-class long-haul PTP backbone system.

There are two separate components to the EM radio system.

•Signal Processing Unit (SPU) – The SPU functions consist of physical network

interfaces (Ethernet, TDM, STM ports, etc), network protocol processing, user interface

& network management, and wireless modem (generating IF signals). An SPU has

essentially the same function as an indoor unit (IDU) in traditional split architecture

commonly implemented in licensed microwave links.

Figure 1-1: SkyWay-EM Signal Processing Unit (SPU)

•Radio Frequency Unit (RFU) – The RFU functions consists of IF to carrier RF signal

conversion and power amplification in the Tx chain and similar down-conversion in the

Rx chain. An RFU is similar to an ODU in split architecture, except that an RFU has an

additional component called Branching Unit (BU), which performs multiplexing of several

RF channel signals.

Figure 1-2: SkyWay-EM Radio Frequency Unit (RFU)

This document describes the RFU and EM system architecture mostly. Please refer to a

separate document for detailed description of the SPU.

Applications of All Indoor RFUs include reliable wireless backbones for Mobile carrier networks,

Mission-critical public safety deployments, Railways, Pipelines, Utilities, Local exchanges, and

Enterprise.

The RFU supports microwave backhaul frequencies in the 6, 7, 8, and 11 GHz frequency bands.

1.1 SkyWay-EM RFU Key Features

The SkyWay-CM radio’s main features are as follows:

Figure 1-3: RFU Shelf, components for 1+1 MHSB configuration shown.

The following are the key features of the RFU:

Very High Power

RFU

Guaranteed 33 dBm (at 1+0 antenna port), x @ 128 QAM

and 6 GHz,

Min.

High Power RFU

Guaranteed 30

dBm (at 1+0 antenna port), x @ 128 QAM

and 6 GHz

Compact design

2.77U height for 1+1 Protected configurations

Supported modulations

QPSK, 16 QAM, 32 QAM, 64 QAM, 128 QAM and 256 QAM

Frequency bands

• L6, U6, 7, 8, and 11 GHz

• Paired and Unpaired frequency plans

Frequency step sizes

• 5 kHz: for L6/U6, 7 and 8 GHz

• 125 kHz: for 11 GHz

ANSI bandwidth range

3.75 to 40 MHz

Upgradability

Field flexible and upgradable

Configurability

System highly configurable

Noise figure at antenna port,

(1+0 configuration)

4.5 dB (5.0 dB for 11 GHz) Max.

350 MHz x; 140 MHz Rx IF

Power supply

Wide mouth, 20 to 60 V with any polarity

Other operation mode

Eco Mode, offering reduced power consumption

The system is designed in modules for flexible configuration and easy field upgrades.

•Each shelf assembly can house two TR modules (transceivers).

•Branching units are inserted to the back for antenna interface.

•RF cables are added for interconnecting the TR modules.

•Front covers are placed for protection against dust.

The following figure shows all components of the SkyWay-EM RFU and illustrates how they get

assembled.

Figure 1-4: RFU components diagram

1.2 Functional Description

A 50 Ωcoaxial cable allows for transmitting the IF signals between the RFU and the SPU.

The coaxial cable also carries the telemetry signals between the SPU and the RFU.

Figure 1-5, provides a general look at the RFU’s architecture.

Figure 1-5: Basic RFU Architecture

The RFU houses up to two Transceivers per shelf, and a BU that connects the RFU to one or

several antennas, through elliptical waveguide(s).

The following Table describes briefly the functions of each RFU main component.

Component

Functions

Transceiver,

consisting of:

Transmitter,

Receiver,

Up/down

converters,

LO synthesizers,

LNA,

Power Amplifier,

Microcontroller,

Power supply,

and RFU-SPU

interconnect

multiplexer

In a Transmit Path

• Using synthesized sources, up-converts, filters, and amplifies the Tx

IF signal to the final RF

• Amplifies the RF signal and feeds it to the BU

In a Receive Path

• Using synthesized sources, down-converts, and filters the signal

received from the BU to generate the IF signal to the SPU

One Transceiver covers one frequency band; two Tx output power

options available:

– For High Power (HP) option, one 6 GHz transceiver covers both the L6

and U6 bands

– For Very High Power (VHP) option, one 6 GHz transceiver covers the

L6 band and another 6 GHz transceiver covers the U6 band

Tx and Rx frequencies are independently programmable to support

paired and unpaired T/R channel plans

Possible Transceiver Options

• One transmitter and one receiver; One transmitter and two receivers with IF

Combiner

Branching Unit,

consisting of:

– Tx RF filter(s)

– Rx RF filter(s),

– Branching

circulators

In a 1+1

MHSB

or a 1+1

MHSB

system

• The BU is equipped with a RF relay switch. Only one transmitter is

transmitting, the RF relay switch selects one of the two “hot” Tx outputs to be

connected to the antenna. The standby Tx is continuously monitored for alarm.

Several Branching Unit Supported Options as protection schemes are

presented in later chapters.

1.3 Configuration Options

RFU Configuration Figure Reference Functionality

1+0 Unprotected Figure 1-6 Non-redundant system

1+1 MHSB Figure 1-7 Hardware redundant system (equal or unequal

Rx splitter)

1+1 MHSB Tx / SD Rx Figure 1-8 Hardware redundant system with SD path

protection

1+0 Tx / SD Rx Figure 1-9 Non protected hardware with SD path

protection, mainly for ring-protected

configurations and, can also be deployed

for linear configurations

1+1 FD or 2+0 Figure 1-10 Hardware/path protection using two

frequencies (FD) or

Two carriers supported on a single antenna

port

4+0 Several carriers supported on a single

antenna port

2+2 MHSB Two hardware redundant systems on one

antenna (two carriers)

2+2 MHSB Tx / SD Rx Two carriers each with hardware

redundancy and SD path protection

1+1 Hybrid Diversity Hardware and path protection scheme,

using FD and SD (two antennas), at one or

both sites of the link, for very difficult paths

1+0 MHSB-Ready Figure 1-11 Non redundant system that can be

upgraded to 1+1 MHSB system without

traffic interruption

1+0 Repeater Figure 1-12 Back-to-back 1+0 repeater configuration

installed in single RFU shelf

1+0 Tx / SD Rx Repeater Figure 1-13 Back-to-back 1+0 Tx / SD Rx repeater

configuration installed in single RFU shelf

1+0 (East) and Tx / SD

Rx (West) Repeater

Back-to-back repeater configuration with

1+0 on the East side, and 1+0 Tx / SD Rx

on the West side, all installed in a single

RFU shelf

Figure 1-6: 1+0 Unprotected Configuration

Figure 1-7: 1+1 MHSB Configuration

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