GE MDS DS-SERIES4 MDS Four.9 Series Digital Radio System User Manual Manual Rev 1

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Microwave Data Systems

MDS FOUR.9 Series

Digital Radio System

User Reference and Installation Guide

PRELIMINARY

Part No. 05-4561A01, Rev. A

Date: 9 JUNE 2006

This book and the information contained herein is the proprietary and confidential information of

Microwave Data Systems Inc. that is provided by Microwave Data SystemsTM exclusively for

evaluating the purchase of Microwave Data Systems Inc. technology and is protected by copyright

and trade secret laws.

No part of this document may be disclosed, reproduced, or transmitted in any form or by any means,

electronic or mechanical, for any purpose without the express written permission of Microwave Data

Systems Inc.

For permissions, contact Microwave Data Systems Inc. Marketing Group at 1-585-241-5510 or 1-585-

242-8369 (FAX).

Notice of Disclaimer

The information and specifications provided in this document are subject to change without notice.

Microwave Data Systems Inc. reserves the right to make changes in design or components as

progress in engineering and manufacturing may warrant.

The Warranty(s) that accompany Microwave Data Systems Inc., products are set forth in the sales

agreement/contract between Microwave Data Systems Inc. and its customer. Please consult the

sales agreement for the terms and conditions of the Warranty(s) proved by Microwave Data Systems

Inc. To obtain a copy of the Warranty(s), contact your Microwave Data Systems Inc. Sales

Representative at 1-585-241-5510 or 1-585-242-8369 (FAX).

The information provided in this Microwave Data Systems Inc., document is provided “as is” without

warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties

of merchantability, fitness for a particular purpose, or non-infringement. Some jurisdictions do not

allow the exclusion of implied warranties, so the above exclusion may not apply to you.

In no event shall Microwave Data Systems Inc. be liable for any damages whatsoever – including

special, indirect, consequential or incidental damages or damages for loss of profits, revenue, use, or

data whether brought in contract or tort, arising out of or connected with any Microwave Data

Systems Inc., document or the use, reliance upon or performance of any material contained in or

accessed from this Microwave Data Systems Inc. document. Microwave Data Systems’s license

agreement may be provided upon request. Additional Terms and Conditions will be finalized upon

negotiation or a purchase.

The above information shall not be constructed to imply any additional warranties for Microwave Data

Systems Inc. equipment including, but not limited to, warranties of merchantability or fitness for an

intended use.

Trademark Information

Software Defined Indoor UnitTM (SDIDUTM) is a product and trademark of CarrierComm Inc.

JavaTM is a trademark of Sun Microsystems Inc.

Windows® is a registered trademark of Microsoft Corporation

All other brand or product names are trademarks or registered trademarks of their respective

companies or organizations.

Table of Contents

1 SAFETY PRECAUTIONS ......................................................................................................................1-1

2 SYSTEM DESCRIPTION .......................................................................................................................2-1

2.1 About This Manual............................................................................................................................2-1

2.2 Introduction.......................................................................................................................................2-1

2.3 System Features ...............................................................................................................................2-4

2.4 Physical Description ........................................................................................................................2-5

2.4.1 Model Types ................................................................................................................................2-6

2.4.2 Options ........................................................................................................................................2-7

2.4.3 Front Panel Indicators .................................................................................................................2-7

2.4.4 Front Panel Connections .............................................................................................................2-8

2.5 System Description ........................................................................................................................2-12

2.6 Consecutive Point Architecture ....................................................................................................2-15

2.7 2 + 0 (East-West) Configuration ....................................................................................................2-17

2.8 1+1 Protection .................................................................................................................................2-18

2.9 1 + 1 Multi-hop Repeater Configuration .......................................................................................2-19

2.10 Data Interfaces ................................................................................................................................2-21

2.11 Power Management ........................................................................................................................2-21

2.12 MDS FOUR.9 Series Software and Network Management..........................................................2-22

3 INSTALLATION .....................................................................................................................................3-1

3.1 Unpacking..........................................................................................................................................3-1

3.2 Notices ...............................................................................................................................................3-2

3.3 Required Tools..................................................................................................................................3-2

3.3.1 SDIDUTM Tools ............................................................................................................................3-2

3.3.2 ODU Tools...................................................................................................................................3-2

3.4 PRE-INSTALLATION NOTES ...........................................................................................................3-3

3.5 Overview of Installation and Testing Process...............................................................................3-3

3.6 Site Evaluation ..................................................................................................................................3-5

3.6.1 Preparing for a Site Evaluation....................................................................................................3-6

3.6.2 Site Evaluation Process...............................................................................................................3-7

3.6.3 Critical System Calculations ......................................................................................................3-12

3.6.4 Frequency Plan Determination..................................................................................................3-13

3.6.5 Antenna Planning ......................................................................................................................3-14

3.6.6 ODU Transmit Power Setup......................................................................................................3-15

3.6.7 Documenting a Site Evaluation .................................................................................................3-16

3.7 Installation of the MDS FOUR.9 Series.........................................................................................3-19

3.7.1 Installing the MDS FOUR.9 Series Software Defined IDUTM ....................................................3-19

3.7.2 Installing the MDS FOUR.9 Series ODU...................................................................................3-20

3.7.3 Routing the ODU/ SDIDUTM Interconnect Cable .......................................................................3-22

3.8 Quick Start Guide ...........................................................................................................................3-24

3.8.1 Materials Required ....................................................................................................................3-24

3.8.2 Grounding the ODU...................................................................................................................3-24

3.8.3 Grounding the SDIDUTM ............................................................................................................3-26

3.8.4 Connecting the SDIDUTM to the PC and Power Source............................................................3-26

3.8.5 SDIDUTM Configuration..............................................................................................................3-27

3.8.6 ODU Antenna Alignment ...........................................................................................................3-29

3.8.7 Quick Start Settings...................................................................................................................3-30

3.9 Documenting MDS FOUR.9 Series Configuration.......................................................................3-31

4 SUMMARY SPECIFICATION ................................................................................................................4-1

5 FRONT PANEL CONNECTORS ...........................................................................................................5-1

5.1 DC Input (Power) Connector............................................................................................................5-1

5.2 Ethernet 100BaseTX Payload Connector 1-2.................................................................................5-1

4.9 SONET Payload Connector..............................................................................................................5-2

5.4 STM-1 Payload Connector ...............................................................................................................5-2

5.5 DS-3/E-3/STS-1 Payload Connector................................................................................................5-2

5.6 NMS 10/100BaseTX Connector 1-2 .................................................................................................5-3

5.7 Alarm/Serial Port Connector............................................................................................................5-3

5.8 ODU Connector.................................................................................................................................5-4

5.9 T1- Channels 1-2 Connector............................................................................................................5-4

5.10 T1- Channels 3-16 Connector..........................................................................................................5-5

5.11 USB ....................................................................................................................................................5-7

5.12 Voice Order Wire...............................................................................................................................5-8

5.13 Data Order Wire ................................................................................................................................5-8

6 APPENDIX .............................................................................................................................................6-1

6.1 Alarm Descriptions...........................................................................................................................6-1

6.2 Abbreviations & Acronyms............................................................................................................6-14

05-4561A01, Rev. A

1 Safety Precautions

PLEASE READ THESE SAFETY PRECAUTIONS!

RF Energy Health Hazard

The radio equipment described in this guide uses radio frequency transmitters. Although the

power level is low, the concentrated energy from a directional antenna may pose a health hazard.

Do not allow people to come closer than 119 cm (47.2) to the front of the antenna while the

transmitter is operating. The antenna must be professionally installed on a fixed-mounted

outdoor permanent structure to provide separation from any other antenna and all persons as

detailed in this manual.

Protection from Lightning

Article 810 of the US National Electric Department of Energy Handbook 1996 specifies that radio

and television lead-in cables must have adequate surge protection at or near the point of entry to

the building. The code specifies that any shielded cable from an external antenna must have the

shield directly connected to a 10 AWG wire that connects to the building ground electrode.

Warning – This is a Class A product

Warning – This is a Class A product. In a domestic environment this product may cause radio

interference in which case the user may be required to take adequate measures.

Warning – Turn off all power before servicing

Warning – Turn off all power before servicing this equipment.

Safety Requirements

Safety requirements require a switch be employed between the SDIDU™ external power supply

and the SDIDU™ power supplies.

User Reference and Installation Guide 1-2

05-4561A01, Rev. A

Proper Disposal

The manufacture of the equipment described herein has required the extraction and use of

natural resources. Improper disposal may contaminate the environment and present a health risk

due to the release of hazardous substances contained within. To avoid dissemination of these

substances into our environment, and to lessen the demand on natural resources, we encourage

you to use the appropriate recycling systems for disposal. These systems will reuse or recycle

most of the materials found in this equipment in a sound way. Please contact Microwave Data

Systems or your supplier for more information on the proper disposal of this equipment.

05-4561A01, Rev. A

2 System Description

2.1 About This Manual

This manual is written for those who are involved in the “hands-on” installation of the

MDS FOUR.9 Series Digital Transceiver, such as installation technicians, site evaluators, project

managers, and network engineers. It assumes the reader has a basic understanding of how to

install hardware, use Windows based software, and operate test equipment.

The MDS FOUR.9 Series includes a Software Defined Indoor UnitTM (SDIDUTM) and outdoor unit

(ODU). The SDIDUTM is a product and trademark of CarrierComm.

2.2 Introduction

The Microwave Data Systems family of digital radios provides high capacity transmission,

flexibility, features, and convenience for wireless digital communications networks. The

Microwave Data Systems digital point-to-point radios represent a new microwave architecture

that is designed to address universal applications for both PDH and SDH platforms. This

advanced technology platform is designed to provide the flexibility to customers for their current

and future network needs.

The Microwave Data Systems radio family is based upon a common platform to support a wide

range of network interfaces and configurations. It supports links for 16 x E1/T1, 100BaseTX

Ethernet, and DS-3/E-3/STS-1 (optional, consult factory for availability). The radio family is

spectrum and data rate scalable, enabling service providers or organizations to trade-off system

gain with spectral efficiency and channel availability for optimal network connectivity. The

Microwave Data Systems digital radio family enables network operators (mobile and private),

government and access service provides to offer a portfolio of secure, scalable wireless

applications for data, video, and Voice over IP (VoIP).

The MDS FOUR.9 Series digital radio family operates in the FCC Public Safety Band of 4.940 to

4.990 GHz, which is generically referred to as the “4.9 GHz band.” The MDS FOUR.9 Series

supports three types of user data payload connectivity as follows:

• 100Base-TX intelligent bridging between two locations without the delay and expense of

installing cable or traditional microwave.

• Scalable Ethernet capability of 25 and 50 Mbps is included. These scalable radios provide

LAN connectivity and offer performance trade-offs between operational bandwidths, data

rates, and distance.

User Reference and Installation Guide 2-2

05-4561A01, Rev. A

• 16E1 or T1 for cellular backhaul, enterprise voice applications and voice network redundancy

For customers such as cellular carriers requiring backhaul and backbone extension as well

as service providers requiring network redundancy, new Points of Presence (POPs), and last mile

access, the MDS FOUR.9 Series radio is a cost effective alternative to leased lines with carrier-

class quality of performance. The MDS FOUR.9 Series is a cost effective solution to meet the

growing demand for enterprise Local Area Network (LAN) connectivity between buildings and

campuses as well as service providers requiring reliable products for infrastructure expansion,

extending Metropolitan Area Network (MAN) fiber access, and network redundancy.

The MDS FOUR.9 Series includes integrated Network Management functionality and design

features enabling simple commissioning when the radio network is initially set up in the field at

the customer’s premises. Furthermore, a highlight of MDS radio products is scalability and the

capability to support a ring-type architecture. This ring or consecutive point radio architecture is

self-healing in the event of an outage in the link and automatically re-routes data traffic, thereby

ensuring that service to the end user is not interrupted.

The MDS FOUR.9 Series is composed of a Software Defined Indoor UnitTM (SDIDUTM) and

Outdoor Unit (ODU). It supports 1+0 and 1+1 protection and ring architectures in a single 1 RU

chassis. The modem and power supply functions are supported using easily replaceable plug-in

modules. An additional feature of the SDIDUTM is provision for a second plug-in modem/IF

module to provide repeater or east/west network configurations.

The overall architecture consists of a single 1RU rack mount Software Defined Indoor Unit

(SDIDUTM) with a cable connecting to an Outdoor Unit (ODU) with an external antenna.

Core Access

Network

Indoor Unit

Outdoor

Unit

Outdoor

Unit

Outdoor

Unit

Outdoor

Unit

Outdoor

Unit

Outdoor

Unit

Figure 2-1. MDS FOUR.9 Series SDIDUTM and ODU Architecture

145H142HTable 2-1 lists key features that MDS FOUR.9 Series technology offers to those involved in the

design, deployment and support of broadband fixed wireless networks.

User Reference and Installation Guide 2-3

05-4561A01, Rev. A

Table 2-1 Key Benefits and Advantages of MDS FOUR.9 Series Radios

Benefits Advantages to Providers/Customers Reference

Wireless license-exempt system

ISM bands do not require expensive

license band fees or incur licensing delays.

Wireless connectivity supplements existing

cable (Ethernet).

Fast return on investment.

Lower total cost of total ownership.

Media diversity avoids single points of

failure.

146H143H2.2 –147H144H2.4

Easy to install units

Straightforward modular system enables

fast deployment and activation.

Carrier-class reliability.

Fast return on investment.

No monthly leased line fees.

148H145H3.5

Complete support of payload capacity with additional wayside channels

Aggregate capacity beyond basic payload

(34 Mbps or 50 Mbps or 100 Mbps).

Scalable and spectrally efficient system.

Separate networks for radio

overhead/management and user payload.

Increases available bandwidth of network.

Allows customer full use of revenue-

generating payload channel.

Up to 16 T1/E1 wayside channels supports

extension of PBX connectivity between

buildings without additional leased-line

costs.

Lowers total cost of ownership.

149H146H2.2– 150H147H2.5

Ring Architecture

Supports a ring (consecutive point)

configuration, thus creating a self-healing

redundancy that is more reliable than

traditional point-to-point networks.

In the event of an outage, traffic is

automatically rerouted via another part of

the ring without service interruption.

Ring/consecutive point networks can

overcome line-of-sight issues and reach

more buildings than other traditional

wireless networks.

Networks can be expanded by adding

more MDS FOUR.9 Series units or more

rings without interruption of service.

Enables network scalability.

Increases deployment scenarios for initial

deployment as well as network expansion

with reduced line-of-sight issues.

Increases network reliability due to self-

healing redundancy of the network.

Minimizes total cost of ownership and

maintenance of the network.

Allows for mass deployment.

2.6,2.7,2.9

User Reference and Installation Guide 2-4

05-4561A01, Rev. A

Benefits Advantages to Providers/Customers Reference

A separate management channel allows

for a dedicated maintenance ring with

connections to each radio on the ring.

Adaptive Power Control

Automatically adjusts transmit power in

discrete increments in response to RF

interference. For EIRP compliance, the

power output is limited to the maximum

established at the time of installation, per

FCC Part 90 rules.

Enables dense deployment.

Simplifies deployment and network

management.

2.11

Comprehensive Link/Network Management Software

A graphical user interface offers security,

configuration, fault, and performance

management via standard craft interfaces.

Suite of SNMP-compatible network

management tools that provide robust

local and remote management capabilities.

Simplifies management of radio network

and minimizes resources as entire network

can be centrally managed from any

location.

Simplifies troubleshooting of single radios,

links, or entire networks.

Simplifies network upgrades with remote

software upgrades.

Allows for mass deployment.

2.12

2.3 System Features

 Selectable Rates and Interfaces

o Up to 16 x E1/T1 (wayside channels)

o 100BaseTX/Ethernet: Scalable 25-100 Mbps

o DS-3/E-3/STS-1 (option; consult factory for availability)

 Support for multiple configurations

o 1+0, 1+1 protection/diversity

o Hot Standby

o East/West Repeater (2 + 0)

User Reference and Installation Guide 2-5

05-4561A01, Rev. A

 Selectable Spectral Efficiency of 0.8 to 6.25 bits/Hz (including FEC and spectral shaping

effects)

 QPSK, 16 – 64 QAM Modulation

 Powerful Trellis Coded Modulation concatenated with Reed-Solomon Error Correction

 Built-in Adaptive Equalizer

 Support of Voice Orderwire Channels

 Peak output power at antenna port

o 24.4 dBm at 4.9 GHz (High Power)

o 17.1 dBm at 4.9 GHz (Low Power)

 Receive Sensitivity: -84 dBm to -72 dBm (depending on data rate/modulation/FEC/ODU)

 Adaptive Power Control—Adjusts power output to account for changing path

conditions. Power is limited to the maximum established at the time of installation, per

FCC Part 90.

 Built-in Network Management System (NMS)

 Consecutive Point ring architecture

 Built-in performance statistics

o Built-in Bit Error Rate (BER) performance monitoring

 Data encryption of all payload data and T1/E1 wayside channels for MDS FOUR.9

Series-100 and MDS FOUR.9 Series-50 Ethernet models (Consult factory for availability)

2.4 Physical Description

The following section details the physical features of the MDS FOUR.9 Series digital radios

• Model types

• Front panel indicators

• Front panel connections

User Reference and Installation Guide 2-6

05-4561A01, Rev. A

2.4.1 Model Types

158H155HTable 2-2 lists the MDS FOUR.9 Series digital radios according to model number and associated

capabilities of throughput, data interface, and wayside channel. 159H156H

Table 2-3 lists the ODU model numbers.

Table 2-2 MDS FOUR.9 Series SDIDUTM Model Types

PRODUCT NAME MODEL NUMBER FULL DUPLEX

THROUGHPUT

DATA

INTERFACE

WAYSIDE

4.9 GHz: MDS

FOUR.9 Series

SDIDU49MNVN

100 Mbps

Aggregate

(50 Mbps full

duplex)

100 BaseTX Two

T1/E1s

4.9 GHz: MDS

FOUR.9 Series

SDIDU49MPVN 100 Mbps

Aggregate

(50 Mbps full

duplex), 1+1

Protection or 2+0

100 BaseTX Two

T1/E1s

4.9 GHz: MDS

FOUR.9 Series

SDIDU49MNCN 200 Mbps

Aggregate

(100 Mbps full

duplex)

100 BaseTX Two

T1/E1s

4.9 GHz: MDS

FOUR.9 Series

SDIDU49MPCN 200 Mbps

Aggregate

(100 Mbps full

duplex), 1+1

Protection or 2+0

100 BaseTX Two

T1/E1s

4.9 GHz: MDS

FOUR.9 Series

SDIDU49MNTN 68 Mbps Aggregate

(34 Mbps full

duplex) + scalable

ethernet

1-16xE1/T1 Scalable

Ethernet, 2

Mbps

4.9 GHz: MDS

FOUR.9 Series

SDIDU49MPTN 72 Mbps Aggregate

(36 Mbps full

duplex), 1+1

Protection or 2+0

1-16xE1/T1

Scalable

Ethernet, 2

Mbps

User Reference and Installation Guide 2-7

05-4561A01, Rev. A

Table 2-3 MDS FOUR.9 Series ODU Model Types

PRODUCT NAME MODEL NUMBER ANTENNA

MDS FOUR.9-ODU53e ODU4900MEP External antenna required

2.4.2 Options

The following items are also available:

• AC/DC power supply

• Data Encryption

• Upgrade 50Mbps Ethernet systems to 100Mbps capability

• OC-3/STM-1 Mini-IO Module

Please consult the factory for more information.

2.4.3 Front Panel Indicators

All models of the MDS FOUR.9 Series support a variety of front panel configurations that are

dependent on the network interface and capacity configurations.

160H157HFigure 2-2 provides an example of the MDS FOUR.9 Series 1+0 configuration and the

associated LEDs displayed on the SDIDUTM front panel. The controller, standard I/O, and each

modem card have a status LED.

Figure 2-2. MDS FOUR.9 Series LEDs: SDIDUTM Front Panel Configuration for 1+0

Configuration

The modem status LED indicates the modem status as described in Table 2-4.

User Reference and Installation Guide 2-8

05-4561A01, Rev. A

Table 2-4. Modem status LED.

LED STATUS

Green Active Locked Link

Orange Standby Locked Link (1+1 Non-Diversity Only)

Flashing Green Low SNR

Flashing Orange Unlocked

The controller status LED is the primary front panel indicator of alarms. An alarm is generated

when a specific condition is identified and is cleared when the specified condition is no longer

detected. When an alarm is posted,

1. The controller status LED turns orange for 5 seconds

2. The controller status LED turns off for 5 seconds

3. The controller status LED flashes orange the number of times specified by the first digit of

the alarm code

4. The controller status LED turns off for 3 seconds

5. The controller status LED flashes orange the number of times specified by the second

digit of the alarm code

Steps 2-5 are repeated for each alarm posted. The entire process is repeated as long as the

alarms are still posted.

The standard I/O and modem status LEDs are set to red when certain alarms are posted. A

complete list of alarms is provided in Appendix 161H158H6.1.

The alarm description is also displayed in the Graphical User Interface (GUI) as described in the

User Interface Reference Manual.

2.4.4 Front Panel Connections

Please refer to the 162H159HFigure 2-3 for an example of a MDS FOUR.9 Series SDIDUTM front panel

followed by a descriptive text of the connections.

User Reference and Installation Guide 2-9

05-4561A01, Rev. A

Figure 2-3. MDS FOUR.9 Series, 1+1 Protection: SDIDUTM Front Panel Connections

User Reference and Installation Guide 2-10

05-4561A01, Rev. A

Power Supply Input

DC Input

-48 VDC

-48v (Isolated Input); 2-pin captive power connector. The unit

requires an input of -48 volts dc ±10% at the front panel DC

Input connector. The total required power is dependent on

the option cards and protection configuration (1+0, 1+1). The

SDIDUTM front panel power connector pin numbering is 1

through 2, from left to right, when facing the unit front panel.

Pin 1 is the power supply return and is connected to unit

chassis ground internally. Pin 2 should be supplied with a

nominal -48 V dc, with respect to the unit chassis (ground).

A ground-isolated supply may be used, provided it will

tolerate grounding of its most positive output.

The recommended power input is -44 to -52 V dc at 2 Amps

minimum. It is recommended that any power supply used be

able to supply a minimum of 100 Watts to the SDIDUTM.

A mating power cable connector is supplied with the

SDIDUTM. It is a 2-pin plug, 5 mm pitch, manufactured by

Phoenix Contact, P/N 17 86 83 1 (connector type MSTB

2,5/2-STF). This connector has screw clamp terminals that

accommodate 24 AWG to 12 AWG wire. The power cable

wire should be selected to provide the appropriate current

with minimal voltage drop, based on the power supply

voltage and length of cable required. The recommended

wire size for power cables under 10 feet in length supplying

-48 Vdc is 18 AWG.

The SDIDUTM supplies the ODU with all required power via

the ODU/SDIDUTM Interconnect cable. The SDIDUTM does

not have a power on/off switch. When DC power is

connected to the SDIDUTM, the digital radio powers up and is

operational. There can be up to 204 mW of RF power

present at the antenna port (external antenna version). The

antenna should be directed safely when power is applied.

User Reference and Installation Guide 2-11

05-4561A01, Rev. A

Alarm/Serial Interface

Alarms/Serial DB-15HD female connector for two Form-C relay alarm

outputs (rated load: 1A @ 24 VDC), two TTL alarm outputs,

four TTL alarm inputs, and Serial Console. The two Form-C

relay alarm outputs can be configured to emulate TTL alarm

outputs.

USB Interface

USB USB connector, optional.

Voice Orderwire Connector

Voice

Orderwire Call

Call button to alert operator at link-partner SDIDUTM of

incoming Voice-Orderwire call.

Voice

Orderwire

RJ-11 modular port connector for voice orderwire interface.

NMS 10/100 Network Management System Connections

NMS 10/100 1 10/100Base-TX RJ-45 modular local port connector for

access to the Network Management System (SNMP) and

GUI.

NMS 10/100 2 10/100BaseTX RJ-45 modular remote port connector for

access to the Network Management System (SNMP). This

port to be used for consecutive point networks.

100/Ethernet Models: Ethernet 100BaseT Connections

USER 10/100 1 100Base-TX RJ-45 modular port connector for the local Fast

Ethernet interface.

USER 10/100 1 100Base-TX RJ-45 modular port connector. This port to be

used for consecutive point networks.

T1 Channels

T1 1-2 Two T1/E1 (RJ-48C) interface connections.

T1 3-16 Fourteen T1/E1 high density interface connector

User Reference and Installation Guide 2-12

05-4561A01, Rev. A

2.5 System Description

The overall digital radio architecture consists of a single 1RU rack mount Software Defined Indoor

UnitTM (SDIDUTM) with a cable connecting to an Outdoor Unit (ODU). The 4.9 GHz ODU is

designed for use with an external antenna only. This SDIDUTM /ODU architecture is

advantageous when compared to a single IDU with external mount antenna, since supporting a

signal of 4.9 GHz from the IDU rack to the antenna will result in significant signal degradation,

which would require expensive coaxial cable or waveguide.

163H160HFigure 2-4 shows the SDIDUTM and interfaces from a functional point of view. The functional

partitions for the I/O, Modem/IF, and power supply modules are shown. The SDIDUTM comes

with the standard I/O capability that can be upgraded. In addition, the Modem/IF function is

modular. This allows the addition of a second Modem to support protection or ring architectures.

The power supply is similarly modular.

User Reference and Installation Guide 2-13

05-4561A01, Rev. A

External

Antenna

Internal/

Horizontal

Antenna

Transfer

Switch Duplexer

Diversity

Switch

Transmitter

Up-Converter

Receiver

Down-Converter

350

MHz

140

MHz

DC/DC

Converters

-48Vdc +10Vdc

+5Vdc

+3Vdc

-5Vdc

Commlink

& Processor

5/10

MHz

ODU

RSL

(Received

Signal Level)

Voltage

Vertical

Antenna

TNC

N-type

BNC

5.3/

5.8

GHz

FRAMER

STM-1/OC3

DS-3/ES/

STS-1

2xSTM-1/

OC3

4xDS3/ES/

STS1

Future

64 kbps

Voice

16 T1/E1

User 2x

100Base-Tx Switch MODEM/

FEC ASIC

MODEM/

FEC ASIC

4x44.736/34.368/

51.84 Mbps

2x 155.52 Mbps

4x44.736/34.368/

51.84 Mbps

155.52 Mbps

2x 100 Mbps

16x 1.544/2.048

Mbps

Digital

Quad

Mux

SNMP 2x

100Base-Tx Switch

CPU

East/Primary Modem

West/Secondary Modem

Digital

Quad

Mux

2x 100 Mbps

IDU

CONTROLLER

Optional I/O Cards

(Small Slot)

Standard I/O Cards

Optional I/O Cards

(Large Slot)

Primary Power

Supply

Secondary Power

Supply

Serial

RCH Serial

Modem Control

Telemetry

IDU

-48Vdc

Quad

Mux

-48Vdc

Multiplexed

Figure 2-4. MDS FOUR.9 Series System Block Diagram

The SDIDUTM interfaces with the ODU to receive and provide modulated transmit and receive

waveforms. The SDIDUTM interfaces provide Fast Ethernet 100Base-T (MDS FOUR.9 Series-

100) connections to the network. Contact factory for availability of SONET OC-3 (MDS FOUR.9

Series-155) connections. In addition, two E1/T1 channels are provided for PBX extension.

SNMP is provided on 10/100BaseT ports.

User Reference and Installation Guide 2-14

05-4561A01, Rev. A

The ODU RF Up/Down Converter card provides the interface to the antenna. The transmit

section up-converts and amplifies the modulated Intermediate Frequency (IF) of 350 MHz from

the IF Processor and provides additional filtering. The receive section down converts the

received signal, provides additional filtering, and outputs an IF of 140 MHz to the IF Processor.

The 64-QAM Modem performs the modulation and demodulation of the payload and forward error

correction using advanced modulation and coding techniques. Using all-digital processing, the

64-QAM Modem uses robust modulation and forward error correction coding to minimize the

number of bit errors and optimize the radio and network performance. The 64-QAM Modem also

scrambles, descrambles and interleaves/deinterleaves the data stream in accordance with

Intelsat standards to ensure modulation efficiency and resilience to sustained burst errors. The

modulation will vary by application, data rate, and frequency spectrum. The highest order

modulation mode supported is 64 Quadrature Amplitude Modulation (QAM). 164 H161HTable 2-5

summarizes the TCM/convolutional code rates for each modulation type supported by the MDS

FOUR.9 Series.

Table 2-5. MDS FOUR.9 Series TCM/Convolutional Code Rates

Modulation Type Available Code

Rates

QPSK 1/2, 3/4, 7/8

16-QAM 3/4, 7/8, 11/12

32-QAM 4/5, 9/10

64-QAM 5/6, 11/12

The major functions of the SDIDUTM can be summarized as follows:

• I/O Processing – The SDIDUTM comes with a standard I/O capability that includes support for up to

16xT1/E1 and 2x100Base-TX user payloads, 2x100Base-TX for SNMP, and voice orderwire. In

addition, option cards for DS-3/E3/STS-1, 1-2 x STM-1/OC-3, and 4xDS-3/E3/STS-1 may be

added. The SDIDUTM architecture is flexible and allows for the addition of other I/O types in the

future.

• Switch/Framing – The SDIDUTM includes an Ethernet Switch and a proprietary Framer that are

designed to support 1+1 protection switching, ring architecture routing, and overall network control

functions.

• Network Processor – The SDIDUTM includes a Network Processor that performs SNMP and

Network Management functions.

• Modem/IF – The SDIDUTM Modem performs forward-error-correction (FEC) encoding, PSK/QAM

modulation and demodulation, equalization, and FEC decoding functions. The IF chain provides a

350 MHz carrier, receives 140 a MHz carrier, processes OOK telemetry, and provides –48V

power. Two modems can be used for 1+1 protection or ring architectures.

• Power Supply – The SDIDUTM power supply accepts -48 Vdc and supplies the SDIDUTM and ODU

with power. A second redundant power supply may be added as an optional module.

The Modem Processor and its associated RAM, ROM, and peripherals control the digital and analog

Modem operation. It also provides configuration and control for both the IF and I/O cards. The

User Reference and Installation Guide 2-15

05-4561A01, Rev. A

SDIDUTM interfaces with the ODU to receive and provide modulated transmit and receive

waveforms.

The SDIDUTM also provides the physical interface for the user payload and network management.

In transmit mode, the Framer merges user payload with radio overhead-encapsulated network

management data. This combined data stream is transmitted without any loss of user bandwidth.

In the receive mode, the Framer separates the combined data stream received from the 64-QAM

Modem. The SDIDUTM supports Scalable Ethernet data rates, such as 25 or 50 Mbps via the

100BaseT data interface port. The SDIDUTM provides network management data on 10 Mbps

ports accessible via the 10/100BaseTX port. The Central Processor Unit (CPU) provides the

embedded control and network element functionality of the NMS. The CPU also communicates

with other functions within the SDIDUTM for configuration, control, and status monitoring.

In Ethernet models, the payload of each user Ethernet data packet and all T1 can be encrypted

using an AES encryption algorithm. In addition, the encryption engine is re-seeded with a new,

randomly generated key stream every 10 seconds, in order to provide enhanced security. The

initial key is based off of a pass phrase entered into each MDS FOUR.9 Series unit by the

network administrator. Consult factory for the availability of this encryption function.

The power supply converts -48 Vdc to the DC voltage levels required by each component in the

system.

2.6 Consecutive Point Architecture

The consecutive point network architecture is based upon the proven SONET/SDH ring.

Telecommunications service providers traditionally use the SONET/SDH ring architecture to

implement their access networks. A typical SONET/SDH network consists of the service

provider’s Point of Presence (POP) site and several customer sites with fiber optic cables

connecting these sites in a ring configuration (see 165H162HFigure 2-5). This architecture lets providers

deliver high bandwidth with high availability to their customers.

User Reference and Installation Guide 2-16

05-4561A01, Rev. A

Figure 2-5. Ring Configuration.

SONET/SDH rings are inherently self-healing. Each ring has both an active path and a standby

path. Network traffic normally uses the active path. Should one section of the ring fail, the network

will switch to the standby path. Switchover occurs in seconds. There may be a brief delay in

service, but no loss of payload, thus maintaining high levels of network availability.

The consecutive point architecture implemented in the MDS FOUR.9 Series Digital Radio family

is based on a point-to-point-to-point topology that mimics fiber rings, with broadband wireless

links replacing in-ground fiber cable. A typical consecutive point network consists of a POP and

several customer sites connected using MDS FOUR.9 Series units. These units are typically in a

building in an east/west configuration. Using east/west configurations, each unit installed at a

customer site is logically connected to two other units via an over-the-air radio frequency (RF) link

to a unit at an adjacent site.

Each consecutive point network typically starts and ends at a POP. A pattern of wireless links and

in-building connections is repeated at each site until all buildings in the network are connected in

a ring as shown in 166H163HFigure 2-6. . For 2 x 1+0 and 2 x 1+1 nodes payload and NMS connections

need to be jumpered between two SDIDUTMs. For 1 x 2+0 nodes, there is no need for jumpers as

there is a single SDIDUTM. For SDH or SONET payloads, the configuration is similar but an

external add/drop mux and a second SDH/SONET interface card are required.

User Reference and Installation Guide 2-17

05-4561A01, Rev. A

Figure 2-6. Consecutive Point Network

2.7 2 + 0 (East-West) Configuration

The SDIDUTM supports an east/west, or 2+0, configuration that allows a consecutive point

architecture to be achieved with only a single 1 RU chassis at each location. In this configuration

the SDIDUTM contains two modems supplies and may contain two power supplies. One modem

is referred to as the west modem and the other as the east modem. The SDIDUTM is connected

to two ODUs, one broadcasting/receiving in one direction of the ring architecture and the other

broadcasting/receiving in the other as shown in Figure 2-7.

User Reference and Installation Guide 2-18

05-4561A01, Rev. A

Connected to

east modem

Connected to

west modem

Connected to

east modem

Connected to

west modem

Connected to

west modem

Connected to

east modem

Connected to

west modem

Connected to

east modem

Figure 2-7. 2+0 (East-West) configuration.

2.8 1+1 Protection

The MDS FOUR.9 Series supports 1+1 protection as an option for a critical link. In this

configuration, protection is provided in a single 1 RU chassis. The SDIDUTM contains two power

supplies and two modems. The power supply, ODU, IF/telemetry and modem are protected. The

digital framing and LIUs are not. One modem is referred to as the west modem and the other as

the east modem. 1+1 protection can be run in two modes called diversity and non-diversity.

In diversity mode, the link between each pair of modems is the same, as shown in 168H165HFigure 2-8,

providing complete redundancy. This arrangement requires bandwidth for both links and non-

interference between the links, but it provides hitless receive and transmit switching. The

SDIDUTM supports both frequency and spatial diversity. In frequency diversity, two frequencies

are used. In spatial diversity, two non-interfering paths are used. In either case, the proprietary

framer chooses the best, or error-free, data stream and forwards it to the Line Interface Units

(LIUs).

User Reference and Installation Guide 2-19

05-4561A01, Rev. A

Connected to

east modem

Connected to

west modem

Connected to

west modem

Connected to

east modem

Figure 2-8. 1+1 protection in diversity mode

169H166HFigure 2-9 shows operation in non-diversity mode. In this mode, one ODU at each location

transmits to both two ODUs at the other location. This mode does not require the extra

bandwidth or interference protection of diversity mode. It provides hitless receive switching and

hot standby. The SDIDUTM automatically switches transmit ODU upon appropriate ODU alarm or

ODU interface error, minimizing transmit outage time.

Connected to

west modem

Connected to

east modem

Connected to

west modem

Connected to

east modem

Figure 2-9. 1+1 protection in non-diversity mode

2.9 1 + 1 Multi-hop Repeater Configuration

The MDS FOUR.9 Series supports a 1 + 1 multi-hop repeater configuration with drop/insert

capability as shown in 171H168HFigure 2-10. This configuration provides individual 1 + 1 link protection as

described in section 172H169H2.8, as well as the full-scale protection inherent in the consecutive point

architecture as described in section 173H170H2.6. At each location within the network, data may be

dropped or inserted. Front panel connections for drop/insert capability are shown in 174H171HFigure 2-11.

In this configuration each SDIDUTM contains two power supplies and two modems.

User Reference and Installation Guide 2-20

05-4561A01, Rev. A

Data

drop/insert

Data

drop/insert

Data

drop/insert

Data

drop/insert

Protected

Link

Protected

Link

Protected

Link

Protected

Link

Figure 2-10. 1 + 1 Multi-hop Repeater Configuration

User Reference and Installation Guide 2-21

05-4561A01, Rev. A

Figure 2-11. Front Panel connections in 1 + 1 multi-hop repeater configuration

2.10 Data Interfaces

The I/O card has 2x100BaseTX interfaces that can be configured as either primary payload, or

secondary wayside channels. The Over-the-air channel has a data-bandwidth capacity that is set

by the frequency-bandwidth, modulation, and coding. The data-bandwidth may be allocated to

various I/O card interfaces, including 155.52 Mbps for STM-1, 2 Mbps per E1, up to 100 Mbps

Ethernet, and up to 1 Mbps NMS. Only up to 100 Mbps of data-bandwidth may be allocated for

either net data, and the two I/O card 100BaseTX interfaces will share that 100 Mbps data-

bandwidth.

There is also an option mini-I/O card, which provides STM-1 Optical/OC-3 or STM-1 Electrical

interfaces. The optical interface is single mode at 1300 nm. Consult factory for availability of

Mini-IO STM-1/OC-3 Module.

2.11 Power Management

RF power management is a radio design feature that controls the power level (typically expressed

in dBm) of the RF signal received from a transmitter by a receiver. The traditional goal of power

management is to ensure that the RF signal at a receiver is strong enough to maintain the radio

link under changing weather and link conditions.

Traditional power management techniques such as Constant Transmit Power Control (CTPC)

and Automatic Transmit Power Control (ATPC) transmit at a high power level to overcome the

effects of fading and interference. However, these techniques continue to operate at a higher

User Reference and Installation Guide 2-22

05-4561A01, Rev. A

power level than needed to maintain the link in clear weather. Because transmit power remains

high when the weather clears, the level of system interference increases.

Radios operating at high transmit power will interfere with other radios, even if the interfering

source is miles away from the victim. High interference levels can degrade signal quality to the

point that wireless radio links become unreliable and network availability suffers. The traditional

solution to system interference is to increase the distance between radios. However, the resulting

sparse deployment model is inappropriate for metropolitan areas.

In response to the need for a high-density deployment model the MDS FOUR.9 Series use a

unique power control technique called AdTPC. AdTPC enables MDS FOUR.9 Series units to

transmit at the minimum power level necessary to maintain a link regardless of the prevailing

weather and interference conditions. The MDS FOUR.9 Series is designed and manufactured to

not exceed the +30 dBm maximum power allowed. The purpose of power management is to

minimize transmit power level when lower power levels are sufficient. AdTPC also extends the

concept of power management by controlling not only the power (dBm) of the RF signal, but its

quality (signal-to-noise ratio) as well.

In contrast to ATPC, the AdTPC technique dynamically adjusts the output power based on both

the actual strength and quality of the signal. Networked MDS FOUR.9 Series units constantly

monitor receive power and maintain 10-12 BER performance under varying interference and

climate conditions. Each MDS FOUR.9 Series unit can detect when there is a degradation in the

received signal level of quality and adjust the transmit power level of the far-end MDS FOUR.9

Series unit to correct for it.

AdTPC provides maximum power in periods of heavy interference and fading and minimum power

when conditions are clear. Minimal transmit power reduces potential for co-channel and adjacent

channel interference with other RF devices in the service area, thereby ensuring maximum

frequency re-use. The resulting benefit is that operators are able to deploy more MDS FOUR.9

Series units in a smaller area.

2.12 MDS FOUR.9 Series Software and

Network Management

All of the MDS FOUR.9 Series parameters are accessible in three ways:

1. Using a standard web-browser via HTTP to access the built in webserver.

2. Via SNMP using the fully featured MIB, allowing for automation of data collection and

network management.

3. Via a command line client accessible from a terminal client connected to the serial port, or

telnet over the NMS Ethernet.

The GUI, SNMP, and CLI control are discussed in the MDS FOUR.9 Series User Interface

Manual.

05-4561A01, Rev. A

3 Installation

3.1 Unpacking

The following is a list of possible included items.

Description Quantity

Digital Radio SDIDUTM (1RU chassis) 1

ODU (with hardware) 1

Manual and/or Quick Start Guide 1

ODU

SDIDUTM

Figure 3-1. MDS FOUR.9 Series Components

Be sure to retain the original boxes and packing material in case of return shipping. Inspect all

items for damage and/or loose parts. Contact the shipping company immediately if anything

appears damaged. If any of the listed parts are missing, call the distributor or the factory

immediately to resolve the problem.

User Reference and Installation Guide 3-2

05-4561A01, Rev. A

3.2 Notices

CAUTION

DO NOT OPERATE EXTERNAL ANTENNA ODU UNITS WITHOUT AN ANTENNA,

ATTENUATOR, OR LOAD CONNECTED TO THE ANTENNA PORT. DAMAGE MAY OCCUR

TO THE TRANSMITTER DUE TO EXCESSIVE REFLECTED RF ENERGY.

ALWAYS ATTENUATE THE SIGNAL INTO THE RECEIVER ANTENNA PORT TO LESS THAN

–20 dBm. THIS WILL PREVENT OVERLOAD AND POSSIBLE DAMAGE TO THE RECEIVER

MODULE.

WARNING

HIGH VOLTAGE IS PRESENT INSIDE THE ODU and SDIDUTM WHEN THE UNIT IS

PLUGGED IN. TO PREVENT ELECTRICAL SHOCK, UNPLUG THE POWER CABLE

BEFORE SERVICING. UNIT SHOULD BE SERVICED BY QUALIFIED PERSONNEL ONLY.

3.3 Required Tools

The following tools are needed for installation.

3.3.1 SDIDUTM Tools

• 1/8” Slotted screwdriver for securing power supply connector

• Screwdriver for rack mount assembly. Size and types depends on rack mount screws

(not included).

3.3.2 ODU Tools

• 13 mm or adjustable wrench for ODU bracket mounting bolts

• 17 mm or adjustable wrench for U-Bolt

User Reference and Installation Guide 3-3

05-4561A01, Rev. A

3.4 PRE-INSTALLATION NOTES

It may be useful to gain familiarity with the MDS FOUR.9 Series via back-to-back bench testing

prior to final installation. We highly recommend installation of lightning protectors on the

ODU/SDIDUTM Interconnect Cable to prevent line surges from damaging expensive components.

Back-to-back bench testing prior to final installation is highly recommended in order to gain

familiarity with the product. The following additional equipment is required for back-to-back

testing:

• Low-loss cables, N-male connectors on ODU interfaces.

• Two inline RF attenuators, 30 dB each, rated for ODU frequency.

The SDIDUTM and ODUs must be configured in an operational configuration and set-up as shown

in 175H172HFigure 3-2. When equipment is connected in operational configuration, no errors should be

reported on the front panel.

ODU - 1

SDIDU - 1

To IDU

Ant. Port

ODU - 2

SDIDU - 2

30 dB 30 dB

TM TM

Ant. Port

Figure 3-2. MDS FOUR.9 Series Back-to-Back Testing Configuration

3.5 Overview of Installation and Testing

Process

The installation and testing process is accomplished by performing a series of separate, yet

interrelated, procedures, each of which is required for the successful implementation of a

production MDS FOUR.9 Series network. These procedures are as follows:

• Site Evaluation: gathering specific information about potential MDS FOUR.9 Series

installation sites.

User Reference and Installation Guide 3-4

05-4561A01, Rev. A

• Cable and Installation: Testing and installing MDS FOUR.9 Series ODU cables and optional

interface devices at installation sites.

• MDS FOUR.9 Series ODU Mounting and Alignment: Mounting ODUs to a pole or wall,

performing link alignment and radio frequency (RF) verification.

• MDS FOUR.9 Series Digital Radio Configuration: Using MDS FOUR.9 Series Link Manager

software to install network- and site-specific parameters in the radios.

• MDS FOUR.9 Series Digital Radio Testing: Performing cable continuity checks and RF tests

for links, the payload/radio overhead channel, and the management channel.

The following diagram shows where installation and commissioning resides within the MDS

FOUR.9 Series network deployment life cycle and defines the sequence in which the processes

that comprise installation and commissioning should be performed.

User Reference and Installation Guide 3-5

05-4561A01, Rev. A

03-01-013b

Customer

Requirements

RF Planning

& Network

Design

Site Selection

& Acquisition

Installation &

Commissioning

Network

Operation &

Maintenance

Network

Upgrade &

Expansion

Install Cables

Mount and Align

ODUs

Perform Site

Evaluation

Configure Digital

Software Defined

IDUTM

Perform Fast

PDH Network Test

Perform

SDH Network Test

Type of

Network?

Installation &

Commissioning

Complete

PDH SDH

Network Life Cycle

3.6 Site Evaluation

A site evaluation consists of a series of procedures for gathering specific information about

potential MDS FOUR.9 Series locations. This information is critical to the successful design and

deployment of a network.

Site evaluations are required to confirm whether or not a building meets network design

requirements. The main objectives are as follows:

User Reference and Installation Guide 3-6

05-4561A01, Rev. A

• Confirm

• Line of sight for each link

• MDS FOUR.9 Series ODU mounting locations

• Site equipment locations

• Cable routes

• Any other potential RF sources

• Prepare site drawings and record site information

3.6.1 Preparing for a Site Evaluation

The following tools are required to perform a site evaluation:

• RF and network design diagrams (as required)

• Binoculars

• Global positioning system (GPS) or range finder

• Compass

• Measuring tape and/or wheel

• Digital camera

• Area map

• Aerial photograph (if available)

• List of potential installation sites (“targeted buildings”)

The following tasks must be completed prior to performing a site evaluation:

• Prepare the initial network design by performing the following:

• Identify potential buildings by identifying targeted customers (applicable if you’re a service

provider)

• Identify potential links by selecting buildings based on the high probability of line of sight

• Arrange for access with the facility personnel into the buildings, equipment rooms, and

architectural plans to become familiar with the location of all ducts, risers, etc.

User Reference and Installation Guide 3-7

05-4561A01, Rev. A

3.6.2 Site Evaluation Process

The following steps must be completed to perform a successful site evaluation. Each step in the

process is detailed in the following subparagraphs:

• Ensure RF Safety compliance: Ensure that appropriate warning signs are properly placed

and posted at the equipment site or access entry. For a complete list of warnings, refer

the Safety Precautions listed at the beginning of this manual.

• Ensure Compliance with Laws, Regulations, Codes, and Agreements: Ensure that any

installation performed as a result of the site evaluation is in full compliance with applicable

federal and local laws, regulations, electrical codes, building codes, and fire codes.

• Establish Radio Line of Sight between MDS FOUR.9 Series Radios: The most critical

step in conducting a site evaluation is confirming a clear visual and radio Line of

Sight (LOS) between a near MDS FOUR.9 Series Radio and a far MDS FOUR.9

Series Radio. If LOS does not exist, another location must be used.

MDS FOUR.9 Series Radios in a link must have a clear view of each other, or visual “line

of sight”. Binoculars may be used evaluate the path from the desired location of the near

MDS FOUR.9 Series Radio to the desired location of the far MDS FOUR.9 Series Radio.

To confirm Line of Sight:

- Ensure that no obstructions are close to the transmitting/receiving path. Take into

consideration trees, bridges, construction of new buildings, unexpected aerial traffic,

window washing units, etc.

- Ensure that each MDS FOUR.9 Series can be mounted in the position required to

correctly align the MDS FOUR.9 Series with its link partner.

MDS FOUR.9 Series Radios must also have a clear radio line of sight. If a hard object,

such as a mountain ridge or building, is too close to the signal path, it can damage the

radio signal or reduce its strength. This happens even though the obstacle does not

obscure the direct, visual line of sight. The Fresnel zone for a radio beam is an elliptical

area immediately surrounding the visual path. It varies in thickness depending on the

length of the signal path and the frequency of the signal. The necessary clearance for the

Fresnel zone can be calculated, and it must be taken into account when designing a

wireless links.

As shown in the picture above, when a hard object protrudes into the signal path within

the Fresnel zone, knife-edge diffraction can deflect part of the signal and cause it to reach

the receiving antenna slightly later than the direct signal. Since these deflected signals

are out of phase with the direct signal, they can reduce its power or cancel it out

User Reference and Installation Guide 3-8

05-4561A01, Rev. A

altogether. If trees or other 'soft' objects protrude into the Fresnel zone, they can

attenuate (reduced the strength of) a passing signal. In short, the fact that you can see a

location does not mean that you can establish a quality radio link to that location.

Microwave Data Systems provides a link planner spreadsheet that calculates the Fresnel

ratio and helps determine link feasibility. Contact your technical support representative

for a copy of the spreadsheet.

 Determine MDS FOUR.9 Series ODU Mounting Requirements: MDS FOUR.9 Series

ODUs can be mounted on an antenna mast, brick, masonry or wall. Refer to detailed

installation sections.

• Determine MDS FOUR.9 Series SDIDUTM Installation Location: MDS FOUR.9 Series

SDIDUsTM can be installed tabletop or cabinet, wall mount, or rack mount. The site must

provide DC power or an optional AC/DC converter may be used. Refer to detailed

installation sections.

• Document Potential Sources of Co-location Interference: When MDS FOUR.9 Series

ODUs are located on a roof or pole with other transmitters and receivers, an interference

analysis may be required to determine and resolve potential interference issues. The

interference analysis needs to be performed by an RF engineer. The specific information

required for each transmitter and receiver includes the following:

- Transmitting and/or receiving frequency

- Type of antenna

- Distance from MDS FOUR.9 Series ODU (horizontal and vertical)

- Polarity (horizontal or vertical)

- Transmit power level

- Antenna direction

• Measure the Link Distance: The two ways to measure link distance are as follows:

- GPS: record the latitude and longitude for the near and far MDS FOUR.9 Series ODU

sites and calculate the link distance. Record the mapping datum used by the GPS

unit and ensure the same mapping datum is used for all site evaluations in a given

network.

- Range finder: measure the link distance (imperial or metric units may be used).

Once the link distance has been measured, verify that the link distance meets the

availability requirements of the link. Microwave Data Systems has created a spreadsheet

tool that calculates the link availability based on the details of the link. The Microsoft Excel

spreadsheet is available on internet, at http://www.microwavedata.com/, and is shown on

the following page. The following parameters should be entered (items in yellow):

• Operating Frequency: Enter 4900

• Transmit Antenna Gain: Enter the gain of the external antenna.

User Reference and Installation Guide 3-9

05-4561A01, Rev. A

• Transmit Output Power: Selectable between +5 to +23dB in 1 dB steps.

• Receive Antenna Gain: Enter the gain of the external antenna if used.

• Link Distance: Enter distance in miles or kilometers (must select the correct units: miles or

kilometers)

• Fresnel Clearance Ratio: This is a factor indicating the radio line of sight. A clear radio

line of site has a fresnel clearance ratio of +0.60. As the curvature of the earth or other

obstacles degrade the radio line of sight, the ratio can drop to –1. A separate spreadsheet

is provided to calculate the appropriate ratio. In this spreadsheet the path length, tower

heights and heights of any obstructions or ridges in the path of the link are entered.

• Climate Factor: Enter 0.1 for dry, 0.25 for average and 0.5 for humid environments

• Terrain Factor: Enter 0.25 for mountainous, 1 for average, and 4 for smooth (water)

• Determine the Length of Interconnect Cable from ODU to SDIDUTM: The primary

consideration for the outdoor interconnect cable from the ODU to SDIDUTM is the distance

and route between the ODU and SDIDUTM. Maximum cable lengths are listed in 176H173HTable

3-1.

Table 3-1. Maximum cable lengths

Loss at (dB/100 m)

Cable Type 140 MHz 350 MHz

Maximum

Length*

LMR-200 12.6 20.1 100 m

LMR-300 7.6 12.1 165 m

LMR-400 4.9 7.8 256 m

RG-214 8 13.1 153 m

Belden 7808 8.6 14 143 m

* Does not account for connector loss.

The link availability, dispersive fade margin and expected signal strength readings are calculated

based on the entered parameters. Maximum link distances based on the antenna and transmitter

power settings are also displayed.

User Reference and Installation Guide 3-10

05-4561A01, Rev. A

MDS FIVE series Link Planner: 5.3GHz Availability

Parameter

Operating Frequency (MHz)

Transmit Antenna Gain (dBi)

Transmitter Output Power (dB

Receive Antenna Gain (dBi)

Link Distance 3.93 miles

Fresnel Clearance Ratio

Climate Factor

Terrain Factor

MDS FIVE series Mode

5.3GHz Band

Modem Data

Rate (Mbps)

Channel

Bandwidth

(MHz)

Rece ive r

Sensitivity3

(dBm)

Link Fade

Margin (dB)

ODU RSSI

(dBm)

Availability

(%)

5.3G-25FE1 31.112E+6 30.0 -83 12 -71 99.9987

5.3G-25FE2 31.112E+6 20.0 -82 11 -71 99.9984

5.3G-25FE3 31.112E+6 13.3 -82 11 -71 99.9984

5.3G-50FE1 56.733E+6 30.0 -80 9 -71 99.9975

5.3G-50FE2 56.733E+6 20.0 -77 6 -71 99.9950

5.3G-50FE3 56.733E+6 13.3 -72 1 -71 99.9845

5.3G-100FE1 107.797E+6 30.0 -73 2 -71 99.9876

5.3G-16E1-2 36.918E+6 20.0 -82 11 -71 99.9984

5.3G-16T1-2 28.655E+6 20.0 -84 13 -71 99.9990

5.3G-16E1-3 36.918E+6 13.3 -82 11 -71 99.9984

5.3G-16T1-3 28.655E+6 13.3 -84 13 -71 99.9990

Note1: FCC's definition; negative clearance indicates no optical LOS; range is [-1,…,0.6]; 0.6 is radio LOS condition.

Note2: Accounting for single knife-edge diffraction loss only.

Note3: BER<<1e-6.

Note4: Listed data rates inlcudes 2 E1 Wayside channels, except f or 16E1/T1 modes.

(miles)

99.9% 99.99% 99.999%

5.3G-25FE1 QPSK 3/4 -83 953

5.3G-25FE2 16QAM 3/4 -82 953

5.3G-25FE3 16QAM 3/4 -82 953

5.3G-50FE1 16QAM 3/4 -80 853

5.3G-50FE2 32QAM 4/5 -77 742

5.3G-50FE3 64QAM 11/12 -72 532

5.3G-100FE1 32QAM 9/10 -73 532

5.3G-16E1-2 16QAM 3/4 -82 953

5.3G-16T1-2 16QAM 3/4 -84 963

5.3G-16E1-3 16QAM 7/8 -82 953

5.3G-16T1-3 16QAM 7/8 -84 963

for Various Availability

Max Distance

Value

5300

MDS FIVE series Mode

Modulation

and Code

Rate

Rece ive r

Sensitivity3

(dBm)

0.60

0.25

User Reference and Installation Guide 3-11

05-4561A01, Rev. A

Path Length (Km) 10

TX Tower Height (m) 30

RX To w e r He i gh t ( m ) 30

Freque ncy (MHz) 5800

Calculated Fresnel Clearance Ratio 0.48

MDS FIVE series Link Planner: Fresnel Zone Clearance

Distance

from TX

(Km )

Optical

LOS

Height (m)

1st

Fr e s ne l

Zone

Radius (m)

1st

Fr e s n e l

Zone

Height (m )

Radio LOS (60%

Fr e sne l

Clearance) Zone

Height (m)

Ea r t h

Curvature1

(m)

Obs tr uct ion

Height (m)

Total Earth

Terrain

Height (m)

Fr e s ne l

Clearance

Ratio

0.0 30.0 0.0 30.0 30.0 0.0 0.0 0.0 -

0.3 30.0 3.5 26.5 27.9 0.1 0.0 0.1 8.42

0.5 30.0 5.0 25.0 27.0 0.3 0.0 0.3 6.00

0.8 30.0 6.0 24.0 26.4 0.4 0.0 0.4 4.95

1.0 30.0 6.8 23.2 25.9 0.5 0.0 0.5 4.32

1.3 30.0 7.5 22.5 25.5 0.6 0.0 0.6 3.91

1.5 30.0 8.1 21.9 25.1 0.8 0.0 0.8 3.61

1.8 30.0 8.6 21.4 24.8 0.8 20.0 20.8 1.06

2.0 30.0 9.1 20.9 24.5 0.9 10.0 10.9 2.10

2.3 30.0 9.5 20.5 24.3 1.0 10.0 11.0 2.00

2.5 30.0 9.8 20.2 24.1 1.1 23.0 24.1 0.60

2.8 30.0 10.1 19.9 23.9 1.2 24.0 25.2 0.48

3.0 30.0 10.4 19.6 23.8 1.2 0.0 1.2 2.76

3.3 30.0 10.6 19.4 23.6 1.3 0.0 1.3 2.70

3.5 30.0 10.8 19.2 23.5 1.3 0.0 1.3 2.65

3.8 30.0 11.0 19.0 23.4 1.4 0.0 1.4 2.60

4.0 30.0 11.1 18.9 23.3 1.4 10.0 11.4 1.67

4.3 30.0 11.2 18.8 23.3 1.4 0.0 1.4 2.54

4.5 30.0 11.3 18.7 23.2 1.5 0.0 1.5 2.53

4.8 30.0 11.3 18.7 23.2 1.5 0.0 1.5 2.52

5.0 30.0 11.4 18.6 23.2 1.5 0.0 1.5 2.51

5.3 30.0 11.3 18.7 23.2 1.5 0.0 1.5 2.52

5.5 30.0 11.3 18.7 23.2 1.5 0.0 1.5 2.53

5.8 30.0 11.2 18.8 23.3 1.4 0.0 1.4 2.54

6.0 30.0 11.1 18.9 23.3 1.4 0.0 1.4 2.57

6.3 30.0 11.0 19.0 23.4 1.4 0.0 1.4 2.60

6.5 30.0 10.8 19.2 23.5 1.3 18.5 19.8 0.94

6.8 30.0 10.6 19.4 23.6 1.3 0.0 1.3 2.70

7.0 30.0 10.4 19.6 23.8 1.2 0.0 1.2 2.76

7.3 30.0 10.1 19.9 23.9 1.2 0.0 1.2 2.84

7.5 30.0 9.8 20.2 24.1 1.1 0.0 1.1 2.94

7.8 30.0 9.5 20.5 24.3 1.0 0.0 1.0 3.05

8.0 30.0 9.1 20.9 24.5 0.9 0.0 0.9 3.20

8.3 30.0 8.6 21.4 24.8 0.8 0.0 0.8 3.38

8.5 30.0 8.1 21.9 25.1 0.8 0.0 0.8 3.61

8.8 30.0 7.5 22.5 25.5 0.6 0.0 0.6 3.91

9.0 30.0 6.8 23.2 25.9 0.5 0.0 0.5 4.32

9.3 30.0 6.0 24.0 26.4 0.4 0.0 0.4 4.95

9.5 30.0 5.0 25.0 27.0 0.3 0.0 0.3 6.00

9.8 30.0 3.5 26.5 27.9 0.1 0.0 0.1 8.42

10.0 30.0 0.0 30.0 30.0 0.0 0.0 0.0 -

Note1: Earth Curvature is based on a spherical Earth model w ith a nominal radius of 6371Km and a typical K-factor of 1.33.

0. 0

5. 0

10.0

15.0

20.0

25.0

30.0

35.0

0. 0 2. 0 4. 0 6. 0 8. 0 10. 0

Distance (km)

Opt i cal LOS 1st Fr esnel Radi o LOS Earth Curvature Obst r uc t i ons

User Reference and Installation Guide 3-12

05-4561A01, Rev. A

Select the Grounding Location for both the MDS FOUR.9 Series ODU and SDIDUTM: The MDS

FOUR.9 Series must be properly grounded in order to protect it and the structure it is installed on

from lightning damage. This requires

- Grounding all ODUs as specified by supplier

- Grounding all SDIDUTM to the rack.

• Confirm the Presence of DC Power for the MDS FOUR.9 Series SDIDUTM.

• Ensure Building Aesthetics: Ensure that the ODU can be mounted so that it is

aesthetically pleasing to the environment and to the property owner. Aesthetics must be

approved by the property owner and the network engineer.

• Take Site Photographs

• Sketch the Site

3.6.3 Critical System Calculations

3.6.3.1 Received Signal Level (RSL) and Link Budget

The received signal level (RSL) can be estimated using the following formula:

RSL (dBm) = PTX + GTX ANT – LPath + GRX ANT

Where: PTX is the transmitter output power (in dBm)

GTX ANT is the gain of the transmit antenna (in dB)

GRX ANT is the gain of the receive antenna (in dB)

LPath is the Path loss, defined by:

LP (dB) = 36.6 + 20log10(F*D)

Where: F is the Frequency in MHz (4900 GHz), D is the Distance of path in miles

This link budget is very important in determining any potential problems during installation. The

expected RSL and measured RSL should be close (+/- 5 to 10 dB)

3.6.3.2 Fade Margin Calculation

The fade margin is the difference between the actual received signal and the MDS FOUR.9

Series Radio’s threshold for the modulation mode selected. The fade margin can be used to

determine availability and should be at least 10 dB.

User Reference and Installation Guide 3-13

05-4561A01, Rev. A

3.6.3.3 Availability Calculation

Availability of the microwave path is a prediction of the percent of time that the link will operate

without producing an excessive BER due to multipath fading. Availability is affected by the

following:

• Path length

• Fade margin

• Frequency

• Terrain (smooth, average, mountainous, valleys)

• Climate (dry, temperate, hot, humid)

Depending on the type of traffic carried over the link and the overall network design redundancy,

fade margin should be included to support the desired availability rate. Critical data and voice

may require a very high availability rate (99.999% or 4.9 minutes of predicted outage per year).

To improve availability, the fade margin can be increased by shortening the path length,

transmitting at a higher power level, or by using higher gain antennas.

Availability can be computed using the following formula, which is known as the Vigants Barnett

Method.

Availability = 100 × (1 – P)

P = 2.5 × 10-9 × C × F × D3× 10(-FM/10)

Where F is the frequency in MHz (4900 MHz)

D is the distance in miles

FM is the fade margin in dB

C is the climate/terrain factor as defined below:

Humid/Over Water: C = 4 (worst case channel)

Average Conditions: C = 1

Dry/Mountains: C = 0.25 (best case channel)

Example: Assume 21 dB fade margin, over 5 miles with average climate/terrain, at 4.9 GHz. The

availability comes out to be 99.9986. This corresponds to the link being unavailable for 7.6

minutes per year.

3.6.4 Frequency Plan Determination

When configuring MDS FOUR.9 Series units in a point-to-point or consecutive point configuration,

careful engineering of the MDS FOUR.9 Series frequency plans and antenna locations should be

performed in order to minimize potential interference between nearby radios. Nearby radios

should operate on different frequencies, transmitting in the same band (high side or low side).

User Reference and Installation Guide 3-14

05-4561A01, Rev. A

When designing multi-radio configurations, antenna size, antenna polarization, and antenna

location are critical.

The frequency plan must be selected based on desired data rate and expected link conditions. In

a high interference environment or with lower gain antennas, higher bandwidth, more robust

modulation formats must be employed. The available frequency plans are illustrated in HFigure

3-3.

The channel assignments shown in the figures correspond to the channel numbers entered via

the graphical user interface (GUI) or SNMP.

5250

F, MHz

5350

Diplexer

1 Channel Operation, 30MHz Bandwidth

5270 5330

A Tx

B Rx

A Rx

B Tx

2 Channel Operation, 20MHz Bandwidth

5250

F, MHz

5350

Diplexer

5280 5320

1A Tx

1B Rx

1A Rx

1B Tx

5260 5340

2A Rx

2B Tx

2A Tx

2B Rx

3 Channel Operation, 13.3MHz Bandwidth

5250

F, MHz

5350

Diplexer

5283 5317

1A Tx

1B Rx

1A Rx

1B Tx

5257 5343

2A Rx

2B Tx

2A Tx

2B Rx

3A Tx

3B Rx

5270

3A Rx

3B Tx

5330

5250

F, MHz

5350

Diplexer

1 Channel Operation, 30MHz Bandwidth

5270 5330

A Tx

B Rx

A Rx

B Tx

2 Channel Operation, 20MHz Bandwidth

5250

F, MHz

5350

Diplexer

5280 5320

1A Tx

1B Rx

1A Rx

1B Tx

5260 5340

2A Rx

2B Tx

2A Tx

2B Rx

2 Channel Operation, 20MHz Bandwidth

5250

F, MHz

5350

Diplexer

5280 5320

1A Tx

1B Rx

1A Rx

1B Tx

5260 5340

2A Rx

2B Tx

2A Tx

2B Rx

3 Channel Operation, 13.3MHz Bandwidth

5250

F, MHz

5350

Diplexer

5283 5317

1A Tx

1B Rx

1A Rx

1B Tx

5257 5343

2A Rx

2B Tx

2A Tx

2B Rx

3A Tx

3B Rx

5270

3A Rx

3B Tx

5330

3 Channel Operation, 13.3MHz Bandwidth

5250

F, MHz

5350

Diplexer

5283 5317

1A Tx

1B Rx

1A Rx

1B Tx

5257 5343

2A Rx

2B Tx

2A Tx

2B Rx

3A Tx

3B Rx

5270

3A Rx

3B Tx

5330

Figure 3-3. MDS FOUR.9 Series Channel 4.9 GHz Frequency Plan

(Preliminary Artwork—Need to change to 4.9 GHz frequencies—Greg?)

3.6.5 Antenna Planning

The ODU must be used with an external antenna. The choice of antenna should provide

adequate link performance for most applications.

Larger antennas have the advantage of providing narrower beamwidths and high isotropic gain,

which yields better link performance (higher fade margin, better availability), and improves

immunity to spatial interference (due to the smaller beamwidths). However, larger antennas are

more costly to purchase and install than smaller antennas and in some cases, they require

special equipment for installation due to narrower beamwidths. They are also more easily

affected by wind.

Only directional antennas can be used with MDS FOUR.9 Series radios. Consult factory for

antenna manufacturer options.

1. Select where the cable will enter the building from the outside.

User Reference and Installation Guide 3-15

05-4561A01, Rev. A

2. Determine the length of cable required. Allow three extra feet on each end to allow for strain

relief, as well as any bends and turns.

3.6.6 ODU Transmit Power Setup

Setting the ODU transmit power is conditional on the band and application. The installer of

this equipment is responsible for proper selection of allowable power settings. If there are

any questions on power settings refer to your professional installer in order to maintain

the FCC legal ERP limits.

The SDIDUTM employs spectrally efficient shaped Quadrature Amplitude Modulation (QAM). This

waveform is not a constant envelope waveform. Therefore, the average power and peak power

are different. The difference in peak and average power depends on the constellation type and

shaping factor, where spectral efficiency such as more constellation points or lower shaping

factor leading to peak powers higher than average powers. The peak power is typically 5-7 dB

greater than the average power in the SDIDUTM, and never exceeds 7 dB. Regulatory

requirements are usually based on peak EIRP which is based on peak power and antenna gain.

3.6.6.1 4.9 GHz Band

In the 4.9 GHz Public Safety band the peak EIRP (Effective Isotropic Radiated Power) is limited

to +57.8 dBm at the antenna for bandwidths up to 15 MHz and is reduced for narrower

bandwidths in accordance with FCC Part 90.1215. The ODU must therefore be adjusted so that

the station does not exceed the allowable limit.

The installer is responsible during set up of transmit power to not exceed FCC limits on

transmission power. These maximum power levels are provided in Table 3-2 for various antenna

configurations, along with the operational bandwidths.

Note that though regulatory limits are stated in terms of peak power, the system transmit power

levels are calibrated as averaged power readings. Average power is used for link calculations.

Therefore the levels provided in table 3-2 are average power levels that have been certified to

correspond with the maximum peak EIRP allowed.

EIRP is calculated for link budget with external antennas as,

EIRP(avg) dBm = External Antenna Gain (dBi) + 23 dBm

3.6.6.1.1 ODU with External Antenna

When using external antennas with gains greater than 23 dBi, the transmit power must be

reduced in dB from that given in Table 3-1 by the antenna gain difference above 23 dBi for the

mode that is being used.

For example, using a 6 foot dish antenna with 37 dBi gain, the output power would be dropped by

Antenna Gain (External) – 23 dBi = Antenna Gain Difference

37.6 dBi – 23 dBi = 14.6 dB

User Reference and Installation Guide 3-16

05-4561A01, Rev. A

For mode 100FE1 (single channel configuration with 30MHz emission bandwidth) the power

would be lowered from

Tx Power – Antenna Gain Difference = Tx Power (External Ant)

+5 dBm – 14.6 dB = -9.6 dBm (-10 dBm).

Table 3-1 also presents transmit power settings for various antenna dish sizes.

For link budget, EIRP(Avg) dBm = 37 dBi + Tx Power Setting (dBm).

Table 3-2. Maximum Power Settings for 4.9GHz Public Safety Band Operation (US).

Antenna

Diameter

Antenna

Gain, dBi*

(example)

Maximum Tx

Power

Setting, dBm

EIRP

8 foot dish 39.5 17 56.5

6 foot dish 36.1 21 57.1

4 foot dish 33.1 23 56.1

3 foot dish 30.5 23 53.5

2 foot dish 27.1 23 50.1

* Note: Many antenna manufacturers rate antenna gain in dBd (dB referred to a dipole antenna)

in their literature. To convert to dBi, add 2.15 dB.

Power settings for other modes of operation can be easily extrapolated from Table 3-2. For link

budget calculations,

EIRP(Avg) dBm= Antenna Gain (dBi) + Tx Power Setting (dBm).

Though transmitter radiated power is limited in the 4.9 GHz band regardless of antenna size, the

receiver benefits from gain of larger antennas.

3.6.7 Documenting a Site Evaluation

Use the site evaluation form provided on the following pages to document the results of your site

evaluation. Optimally, this complete site form would be stored with the SDIDUTM for future

reference.

User Reference and Installation Guide 3-17

05-4561A01, Rev. A

Address Site Engineer

Contact Person

Phone

Site No Site Agent

Site Type

# Latitude Longitude

ODU

Example Information Information Information

ODU# 4

Clear Line of Sight Yes

Mounting Method Wall or Pole

FCC Compliance Yes

Collocation

Aesthetics

ODU Azimuth 60 degrees

GPS Reading 80 21' 48"

Cable Lengths

Alarm

Interconnect Cable 250 feet

Grounding/Lighting

Instructions

Photographs*

Photo 1

Photo 2

Photo 3

Sketches**

Sketch 1

Sketch 2

*Photographs **Sketches

Photo 1 - ODU mounting location Sketch 1- Roof and cable route to entry point

Phone 2 - View from the ODU mounting location to the link partner Sketch 2 - Details for grounding and lighting protection

Photo 3 - IDU location Sketch 3 - IDU room and cable routes from entry port

Site Evaluation Form

ODU Roof Location

Mapping Datum (ex. NDA27)

Roof Requirements

Recommendations for Site Photographs and Sketches

User Reference and Installation Guide 3-18

05-4561A01, Rev. A

Site Evaluation

Parameters Example Information Information Information Information

Source PCS

Tx and/or Rx Tx/Rx

Frequency 2.1 GHz

Distance from ODU 5 feet

Owner Sprint PCS

zimuth 210 degrees

Elevation 2 degrees downtilt

ntenna Type

Power

Power 14W

Parameters Example Information Information Information Information

IDU room Identified Yes

Space for cabinet Yes

Phone line Need to install

48 VDC available? Yes

Cables Confirm cables

Take Photo 3

Sketch 3

Front View Top View Side View

ment Cabinet

Batteries

Note

Equipment Dimensions

Colocated

SDIDUTM

Indoor S

ace

User Reference and Installation Guide 3-19

05-4561A01, Rev. A

3.7 Installation of the MDS FOUR.9 Series

The following sections provide installation guides for:

• SDIDUTM Installation

• ODU Installation

3.7.1 Installing the MDS FOUR.9 Series Software Defined IDUTM

The MDS FOUR.9 Series SDIDUTM can be installed in the following three options:

1. Table top or cabinet

2. Wall mount

3. Rack mount

The MDS FOUR.9 Series SDIDUTM should be:

• Located where you can easily connect to a power supply and any other equipment used in

your network, such as a router or PC.

• In a relatively clean, dust-free environment that allows easy access to the rear grounding post

as well as the front panel controls and indicators. Air must be able to pass freely over the

chassis.

• Accessible for service and troubleshooting.

• Protected from rain and extremes of temperature (it is designed for indoor use).

3.7.1.1 Installing on a Table Top or Cabinet

The MDS FOUR.9 Series SDIDUTM can be placed on a tabletop or cabinet shelf. In order to

prevent possible disruption, it is recommended to use a strap to secure the SDIDUTM.

3.7.1.2 Installing on a Wall

An installation option for the SDIDUTM is mounting the unit to a wall. If the wall mount option is

being considered, plan to position the MDS FOUR.9 Series SDIDUTM at a height that allows

LEDs, the connectors on the front panel, and the rear grounding post to be visible at all times and

easily accessible. Also, including plastic clamps to support and arrange the ODU/ SDIDUTM

Interconnect Cable should also be considered.

User Reference and Installation Guide 3-20

05-4561A01, Rev. A

3.7.1.3 Installing in a Rack

To rack-mount the SDIDUTM, use the supplied mounting brackets to secure the chassis to a 19

inch rack cabinet. As shown in 179H176HFigure 3-5, the brackets can be attached to the front sides of the

enclosure. An optional 21 inch rack mount kit is also available (consult factory for details).

Figure 3-5. MDS FOUR.9 Series SDIDUTM Dimensions

3.7.2 Installing the MDS FOUR.9 Series ODU

The MDS FOUR.9 Series ODU is intended for mounting on either a pole or antenna mast.

Each site must be assessed for the mounting method, location, and height. After defining the

mounting location and height for the MDS FOUR.9 Series ODU, re-confirm the line of sight.

When operating a 1+1 configured SDIDU™, i.e. an SDIDU™ with two power supplies and two

modem modules installed, in 1+0 mode, the ODU must be connected to the modem in the bottom

slot. If the ODU is connected to the modem in the top slot, the SDIDU™ will not communicate

with the ODU, and a link cannot be established.

3.7.2.1 Installing the Mounting Poles

First install the mounting poles, on which you will mount the MDS FOUR.9 Series ODU. It is

important to note the direction in which the ODU will point when installing the mounting pole.

The mounting pole must be mounted in a vertical position. Failure to do so may result in

improper alignment of the ODU. Vertical tilt of the ODU is accomplished from the tilt mounting

bracket.

The mounting pole must be grounded.

Now that you have installed the mounting pole, you are ready to install the MDS FOUR.9 Series

ODU onto the mounting poles. Reference 180H177HFigure 3-6 through 181H178HFigure 3-9.

User Reference and Installation Guide 3-21

05-4561A01, Rev. A

Figure 3-6. Mounting Parts for the MDS FOUR.9 Series ODU

1. Remove the pole mount portion of the tilt bracket from the ODU by loosening the middle

bolts and removing the top and bottom bolts on each side.

2. Mount the tilt bracket to the mounting pole using the U-Bolts and nuts. Insert the U-bolts

around the pole and through the holes in the tilt bracket. Install a washer and nut to each

side of the threaded U-bolt and hand tighten. Repeat this step for the second U-bolt.

3. Place the MDS FOUR.9 Series ODU on the mating half of the tilt bracket connected by

the two center bolts.

4. Add the remaining four bolts to the tilt bracket and tighten securely.

5. Manually point the antenna in the direction of the link partner.

Figure 3-7. MDS FOUR.9 Series ODU Rear View

User Reference and Installation Guide 3-22

05-4561A01, Rev. A

Figure 3-8. Tilt Bracket

Figure 3-9. MDS FOUR.9 Series ODU with Mounted Tilt Bracket

3.7.3 Routing the ODU/ SDIDUTM Interconnect Cable

1. Select where the cable will enter the building from outside.

2. Determine the length of cable required. Allow three extra feet on each end to allow for strain

relief, as well as any bends and turns.

User Reference and Installation Guide 3-23

05-4561A01, Rev. A

3. Route the cable.

The SDIDUTM is equipped with TNC female connector on the front of the chassis. Depending on

the ODU type, it will be equipped with either a N-type or TNC female connector at its

interconnecting port. A length of coaxial cable (such as Times Microwave Systems LMR-400,

LMR-300 or LMR-200) fitted with the appropriate N-type or TNC male connectors is required to

connect the ODU to the SDIDUTM. This cable assembly may be supplied in fixed lengths with the

digital radio. Bulk coaxial cable of equivalent specification may also be used, with terminating

connectors applied during cable installation.

Based on an evaluation of the cable routing path, pull the ODU/SDIDUTM Interconnect cable from

one unit to the other, utilizing cable trays, ducts, or conduit as required. Take care that the ODU/

SDIDUTM Interconnect cable is not kinked or damaged in any way during installation. Be sure to

protect the TNC connectors from stress, damage and contamination during installation (do not

pull the cable by the connectors). If multiple ODU/ SDIDUTM Interconnect cables are to be

installed along the same route, the cables should all be pulled at one time. Be sure the installed

cable does not have any bends that exceed the specified cable bend radius. The ODU/ SDIDUTM

Interconnect cable should be adequately supported on horizontal runs and should be restrained

by hangers or ties on vertical runs to reduce stress on the cable. Outside the building, support

and restrain the cable as required by routing and environmental conditions (wind, ice).

The MDS FOUR.9 Series ODU/SDIDUTM and interconnection must be properly grounded in order

to protect it and the structure it is installed on from lightning damage. This requires that the ODU,

any mounting pole or mast and any exposed interconnect cable be grounded on the outside of

the structure. The SDIDUTM must be grounded to a rack or structure ground that also has direct

path to earth ground.

The ODU must be directly connected to a ground rod or equivalent earth ground. The ODU/

SDIDUTM interconnect cable should also be grounded at the ODU, where the cable enters the

structure and at intermediate points if the exposed cable run is long (typically at intervals of 100

ft), with the cable manufacturer’s grounding kits. Lightning protection devices used with the

interconnect cable must be appropriate for the transmission of the interconnect signals (DC to

350 MHz).

Provide a sufficient but not excessive length of cable at each end to allow easy connection to the

ODU and SDIDUTM without stress or tension on the cable. Excessive cable length, especially

outdoors, should be avoided to minimize signal attenuation and provide a more robust and

reliable installation. If installing using bulk coaxial cable, terminate the ODU/ SDIDUTM

Interconnect cable at each end with a TNC male connector on the SDIDUTM side and either a N-

type or TNC male connector on the ODU side that is appropriate for the cable type. Use of

connectors, tools and termination procedures specified by the cable manufacturer is

recommended.

Once the cable has been installed but before connection has been made to either unit, a simple

DC continuity test should be made to verify the integrity of the installed cable. A DC continuity

tester or digital multimeter may be used to verify a lack of DC continuity between the cable center

conductor and outer conductor, with the opposite end of the cable unconnected. With a

temporary test lead or shorting adapter connected to one end of the cable, DC continuity should

be verified between the center and outer conductors at the opposite end.

User Reference and Installation Guide 3-24

05-4561A01, Rev. A

3.8 Quick Start Guide

3.8.1 Materials Required

1. Power supply (-48 V DC @ 2 Amps) OR optional AC/DC power supply and power cable

(A Phoenix Contact P/N 17 86 83 1 connector is provided)

2. Digital voltmeter with test leads and BNC connector (optional, for ODU alignment).

3. SDIDUTM Serial Cable (Optional)

4. Computer with networking capability, consisting of either:

- Laptop computer and Ethernet card with any necessary adapters and a Cat-5 Ethernet

regular or crossover cable

- Networked computer and an additional Ethernet cable providing access to the network.

With the following system requirements:

Minimum:

• Pentium II 400MHz

• 128MB RAM

• 30MB available hard drive space

• Windows 98, Windows NT, Windows 2000, or Windows XP

• Internet Explorer 5.5 (available at 66H66Hhttp://www.microsoft.com) and above or Mozilla

Firefox 1.0.6 (available at 67H67Hhttp://www.firefox.com) with default settings.

• Sun Java JVM 1.5.0 or above (available at 68H68Hhttp://www.java.com)

Recommended:

• Pentium III 500MHz

• 256 RAM

• 30MB available hard drive space

• Windows 98SE, Windows NT, Windows 2000, or Windows XP

• Internet Explorer 5.5 (available at 69H69Hhttp://www.microsoft.com) and above or Mozilla

Firefox 1.0.6 (available at 70H70Hhttp://www.firefox.com) with default settings.

• Sun Java JVM 1.5.0 or above (available at 71H71Hhttp://www.java.com)

5. Site engineering folder with site drawings, or equivalent SDIDUTM configuration

information

6. 1/8” slotted screwdriver

3.8.2 Grounding the ODU

1. Place the grounding rod so as to allow for the shortest possible path from the grounding

cable to the ODU.

2. Drive the grounding rod into the ground at least eight inches from the ground surface.

User Reference and Installation Guide 3-25

05-4561A01, Rev. A

3. Attach a grounding clamp to the grounding rod. You will use this clamp to attach

grounding wires for both the ODU and SDIDUTM, reference 182H179HFigure 3-10.

Figure 3-10 Ground Connections to ODU

4. Connect a ground lug to one end of the grounding wire.

User Reference and Installation Guide 3-26

05-4561A01, Rev. A

5. Remove one of the lower mounting screws of the mounting pole. Insert a screw through

the grounding lug terminal and re-install it to the mounting pole.

6. Attach the grounding wire to the clamp on the grounding rod. If necessary, use wire

staples to secure the grounding wire to the outside wall.

3.8.3 Grounding the SDIDUTM

1. The SDIDU™ should be able to be connected to a system or building electrical ground

point (rack ground or power third-wire ground) with a cable of 36” or less.

2. Connect the grounding wire to either grounding point on the front panel. Use 6-32x5/16

maximum length screws (not provided) to fasten the lug of the grounding cable.

3. Connect the other end of the ground to the local source of ground in an appropriate

manner.

3.8.4 Connecting the SDIDUTM to the PC and Power Source

1. Using the supplied power cable connector, pin 2 (labeled -V) should be connected to the

power supply terminal supplying -48 V dc, while pin 1 (labeled RET) should be connected

to the power supply return. Refer to 183H180HFigure 3-11. Use of a power supply with an

inappropriate ground reference may cause damage to the SDIDUTM and/or the supply.

Figure 3-11. SDIDUTM DC Power Cable Connector

2. Connect the SDIDUTM power cable to the -48 V dc power supply, and place the voltmeter

probes on the unconnected SDIDUTM end of the power cable, with the positive voltmeter

probe on pin 2 (-V) of the cable connector and the negative probe on pin 1(RET). The

connector terminal screw heads may be used as convenient monitor points. Refer to

184H181HFigure 3-11.

3. Turn on the –48 V dc supply. Verify that the digital voltmeter reads between -44 V dc and

-52 V dc when monitoring the cable points specified above. Adjust the power supply

output voltage and/or change the connections at the power supply to achieve this reading.

4. Turn the -48 V dc supply off.

5. Plug the SDIDUTM power cable into the SDIDUTM front panel DC Power connector (DC

Input). Place the voltmeter probes on the cable connector terminal screw heads as per

2 1

User Reference and Installation Guide 3-27

05-4561A01, Rev. A

step 2 above. Refer to 185H182HFigure 3-11. Note that the MDS FOUR.9 Series SDIDUTM does

not have a power on/off switch. When DC power is connected, the digital radio powers

up and is operational. There can be up to 320 mW of RF power present at the antenna

port. The antenna should be directed safely when power is applied.

6. Turn on the -48 V dc power supply, and verify that the reading on the digital voltmeter is

as specified in step 3 above.

7. Connect the SDIDUTM to the laptop computer, using a Cat-5 Ethernet cable or connect

the SDIDUTM to a computer network, using a Cat-5 Ethernet cable. Connect the Ethernet

cable to the NMS 1 or 2 connector on the SDIDUTM front panel. Refer to 186H183HFigure 3-12 for

the SDIDUTM front panel connections.

Figure 3-12. MDS FOUR.9 Series-SB, 1+1 Protection: SDIDUTM Front Panel Connections

3.8.5 SDIDUTM Configuration

Although basic configuration of the MDS FOUR.9 Series SDIDUTM does not require a connection

to the ODU, it is recommended that the ODU and SDIDUTM are connected prior to configuring the

SDIDUTM. A connection to the ODU must be established prior to running the Link Configuration

process (section 5.2) in order to configure ODU related parameters.

3.8.5.1 Setting the IDU IP Address

1. The PC’s network configuration must be set with the parameters provided at the end of

this guide.

2. The IDU should be accessible from your PC at the default IP address provided at the end

of this guide. A network ‘ping’ can be done to verify connectivity to the IDU.

3. Start web browser and use the SDIDUTM default IP address as the url.

4. Log in at the login prompt. The username and password are provided at the end of this

guide.

User Reference and Installation Guide 3-28

05-4561A01, Rev. A

5. The GUI includes a navigation menu in the left frame. If this navigation menu is not

visible, make sure the Java environment is properly installed and active. In the navigation

menu, select Administration, then Network Configuration, and then General. The IP

address, IP Netmask, and IP Gateway are shown.

6. Enter the new IP address, IP Netmask, and IP Gateway. The gateway must be in the

same subnet as the IP address for proper operation. Click “Update” to change the

values.

7. To verify the new IP address, change the PC's network configuration to be on the same

subnet as the new IP address set in the unit and a network 'ping' may be performed to the

new address.

8. To continue using the GUI, point the web browser to the new IP address.

3.8.5.2 Link Configuration

1. Start the SDIDUTM GUI.

2. Use the frame on the left side of the window to navigate to “Link Configuration”, then

“Radio Link.”

3. Select the subcategory “Link Configuration.”

4. Select the operating mode. If the SDIDUTM has one modem installed and is connected to

one ODU, select standard. If the SDIDUTM has two modems installed and is connected to

two ODUs, select 1+1 diversity or 1+1 non-diversity for a protected link or east-west for a

2+0 ring configuration.

5. Follow the wizard located here to enter the rest of the required settings.

3.8.5.3 Setting SDIDUTM Site Attributes

1. Start the SDIDUTM GUI.

2. In the navigation menu, select Administration, then Device Information, and then Device

Names.

3. Enter the Owner, Contact, Description, and Location. These values are not required for

operation, but will help keep a system organized.

3.8.5.4 CLI Access via NMS Ethernet

The CLI may be accessed via NMS Ethernet after connecting and configuring the PC as

described in the previous section. Then using a Telnet client, telnet to the SDIDUTM IP address.

You will be prompted for a username and password. Use the username and password supplied

at the end of this guide.

User Reference and Installation Guide 3-29

05-4561A01, Rev. A

3.8.5.5 CLI Access via Serial Port

The CLI for configuring/monitoring the SDIDUTM may be accessed via the front-panel serial port.

187H184HTable 3-3 shows the pinout for constructing a DB-9 to HD-15 cable.

Table 3-3: Serial Cable Pinout

DB-9 Pin HDB-15 Pin

2 2

3 3

5 5

The serial port parameters are show in 188H185HTable 3-4.

Table 3-4: Serial Port Parameters

Parameter Value

Speed 38400

Bits 8

Stop-Bits 1

Parity None

Flow-Control None

After powering-on the SDIDUTM, the CLI may be accessed by connecting the serial cable

between the PC and the SDIDUTM, launching and configuring a terminal program (e.g.

Hyperterm) and pressing the enter key. You will be prompted for a username and password,

which are supplied at the end of this guide.

3.8.6 ODU Antenna Alignment

To use the built-in tuning of the ODU antenna, a complete link is required, with both ends of the

link roughly pointed at each other, and transmitting.

Once the links are roughly pointed, connect the voltmeter to the RSSI (Receive Signal Strength

Indication) BNC connector seen on the ODU. This mode outputs 0 to +3 Volts. Adjust the

antenna for maximum voltage. The RSSI voltage is linearly calibrated from 2.5 Volts for maximum

RSL (received signal level) at –20 dBm to 0Volts for minimum RSL at -90 dBm. This mapping

characteristic is plotted below in 189H186HFigure 3-13.

User Reference and Installation Guide 3-30

05-4561A01, Rev. A

RSSI - Mapped Voltage Output

-100 -80 -60 -40 -20 0

Re ceive d Signal Le vel (dBm)

RSSI Output (V)

Figure 3-13. ODU RSSI Output vs. Received Signal.

3.8.7 Quick Start Settings

PC Network Configuration

The Web GUI may be accessed via NMS by connecting a CAT5 patch cable between

the SDIDUTM front-panel NMS port and a PC. The PCs network interface must be

configured to an open IP address within the same subnet. For the default SDIDUTM

configuration, the IP address of the PC needs to be 192.168.0.x, where x (between 2

and 253) provides an available IP address. DHCP may also be used to set the PC IP

address if a DHCP server is configured on the same subnet.

SDIDUTM Default IP Address

Parameter Value

IP Address 192.168.0.1

Netmask 255.255.255.0

Gateway 192.168.0.254

After configuring the PCs network interface, a web browser may be launched and the

following URL entered to access the Web GUI:

http://192.168.0.1/

Username and Password

A dialog box will show requesting a username and password:

• User: administrator

• Pass: d1scovery

User Reference and Installation Guide 3-31

05-4561A01, Rev. A

3.9 Documenting MDS FOUR.9 Series

Configuration

Use the MDS FOUR.9 Series configuration form provided at the end of this section, or a similar

form, to document the results of the SDIDUTM configuration procedure. Optimally, this complete

site form would be stored with the SDIDUTM for future reference.

AB-Full Access Digital Radio Configuration Form

Link ID

Radio Type (A/B) A=Low band, Horizontal polarization, odd serial number

B=High band & Vertical polarization, even serial number

Radio ID # Radio S/N

Site Name

Addresses Commissioning:

Near IP: Far IP Rain Model

Ro u t i ng Frequency TX RX

Net Mask: IP EMS 1 Grade of Service

NTP: IP EMS 2 Rain Region

Gateway: IP EMS 3

IP E MS 4 Li nk Di stanc e GP S Location

SNMP Community Names Near Latitude deg min sec

Trap: Super User OR Near Longitude deg min sec

Read/Write Read: Far Latitude deg min sec

Far Longitude deg min sec

Ra d i o Ty p e ( A/ B)

Radio ID# Radio S/N

Site Name

Addresses Commissioning:

Near IP: Far IP Rain Model

Routing F requency TX RX

Net Mask: IP EMS 1 Grade of Service

NTP: IP EMS 2 Rain Region

Gateway: IP EMS 3

IP E MS 4 Li nk Di stanc e GP S Location

SNMP Community Names Near Latitude deg min sec

Trap: Super User OR Near Longitude deg min sec

Read/Write Read: Far Latitude deg min sec

Far Longitude deg min sec

Distance (meters)

Network Administration - Radio

Distance (meters)

Link Administration - Radio

Network Administration - IFU Link Administration - Radio

05-4561A01, Rev. A

4 Summary Specifications

Parameter Characteristic

System

Capacity 50 Mbps Ethernet

1-16 T1/E1

Various combinations of above

Frequency Range 4.9475 to 4.9825 GHz

Output Power – Average*

(at antenna port)

+5 to 23 dBm

Output Power – Peak*

(at antenna port)

17.1 dBm (Low Power)

24.4 dBm (High Power)

Input Sensitivity -84 dBm (or higher, based on selected mode)

Maximum Input Power -20 dBm

Modulation QPSK to 64-QAM

Channelization 12.5, 16.7 MHz

Radio Interfaces

External Antenna N Type Female

SDIDUTM /ODU Link TNC Female

RSSI BNC Female

Data Interfaces

Payload

Ethernet

2 T1/E1

14 T1/E1

100Base-Tx RJ-45

RJ-48C Female (2)

Molex High-Density 60-pin

SNMP 10Base-T/100Base-Tx RJ-45 Female

Control

Network Management SNMP, web/http browser

NMS Connector 10Base-T/100Base-Tx

Voice Orderwire RJ-48C

Auxiliary Data (64 kps) RJ-48C

User Reference and Installation Guide 4-2

05-4561A01, Rev. A

Encryption Proprietary, AES (optional)

Alarm Port 2 Form C (SPDT), 2 TTL Output, 4 TTL Input, DB-15HD

Power/Environment

DC Power -48 Volts +/-10%, <70 W

SDIDUTM Operational

Temperature

-5 to 55 degrees C

ODU Operational

Temperature

-30 to 55 degrees C

SDIDUTM Humidity 0 to 95%, non-condensing

ODU Humidity ODU Humidity

Altitude Altitude

Physical Dimensions

SDIDUTM Size (WxHxD)

17.2 x 1.75 x 14.5 inches

(43.7 x 4.5 x 36.0 cm)

SDIDUTM Weight 7 lbs (3.12 Kg)

SDIDUTM

EIA Rack Mount 19 inch/48.2 cm, 1 rack unit

ODU Size (W x H x D) 14.6 x 15.4 x 2.6 inches

ODU Weight 15 lbs (6.8 Kgs)

ODU

Mounting/Installation Custom Bracket

* For definitions of peak and average power, see Section 3.6.6

05-4561A01, Rev. A

5 Front Panel Connectors

5.1 DC Input (Power) Connector

PIN TYPE SIGNAL

1 POWER Power supply return

2 POWER -48 Vdc, nominal

Two-pin male

5.2 Ethernet 100BaseTX Payload Connector 1-2

PIN TYPE SIGNAL

1 INPUT RX+

2 INPUT RX-

3 OUTPUT TX+

4 N/A N/A

5 N/A N/A

RJ-45 Female

12 3 4 5 6 7 8

6 OUTPUT TX-

7 N/A N/A

8 N/A N/A

User Reference and Installation Guide 5-2

05-4561A01, Rev. A

5.3 SONET Payload Connector

Consult factor for Mini-IO Optical Module for availability.

PIN TYPE SIGNAL

OUT OUTPUT SONET OC-3 payload output (optical)

IN INPUT SONET OC-3 payload input (optical)

SC Duplex Female Fiber

INOUT

5.4 STM-1 Payload Connector

Consult factor for Mini-IO Optical Module for availability.

PIN TYPE SIGNAL

TX OUTPUT SDH STM-1 payload output (electrical)

RX INPUT SDH STM-1 payload input (electrical)

BNC Duplex

RXTX

5.5 DS-3/E-3/STS-1 Payload Connector

PIN TYPE SIGNAL

TX OUTPUT DS-3/E-3/STS-1 payload output

RX INPUT DS-3/E-3/STS-1 payload input

BNC Duplex

RXTX

User Reference and Installation Guide 5-3

05-4561A01, Rev. A

5.6 NMS 10/100BaseTX Connector 1-2

PIN TYPE SIGNAL

1 OUTPUT TX+

2 OUTPUT TX-

3 INPUT RX+

4 N/A N/A

RJ-45 Female

12 3 4 5 6 7 8

5 N/A N/A

6 INPUT RX-

7 N/A N/A

8 N/A N/A

5.7 Alarm/Serial Port Connector

PIN TYPE SIGNAL

1 OUTPUT TTL Alarm Output 3

20F0F

1 INPUT/

Output

RS-232 RX/TX

31 OUTPUT/

Input

RS-232 TX/RX

DB-15HD Female

4 OUTPUT TTL Alarm Output 4

5 N/A GROUND

61F1F

2 N/A Alarm 1 Form C Contact Normally Open

2 N/A Alarm 1 Form C Contact Normally Closed

2 N/A Alarm 2 Form C Contact Common

1 Pins 2 and 3 are hardware jumper configurable for DCE or DTE operation.

2 Form C Contacts are hardware jumper configurable to emulate TTL outputs.

User Reference and Installation Guide 5-4

05-4561A01, Rev. A

PIN TYPE SIGNAL

9 INPUT TTL Alarm Input 1

10 INPUT TTL Alarm Input 3

112 N/A Alarm 1 Form C Contact Common

122 N/A Alarm 2 Form C Contact Normally Open

132 N/A Alarm 2 Form C Contact Normally Closed

14 INPUT TTL Alarm Input 2

15 Input TTL Alarm Input 4

5.8 ODU Connector

PIN TYPE SIGNAL

Center I/O 350 MHz TX IF / 140 MHz RX IF / -48 VDC

Shield N/A Shield / Chassis GND

TNC coaxial female

5.9 T1- Channels 1-2 Connector

PIN TYPE SIGNAL

1 INPUT RX+

2 INPUT RX-

3 N/A GND

4 OUTPUT TX+

RJ-45 Female

12 3 4 5 6 7 8

5 OUTPUT TX-

6 N/A GND

7 N/A N/A

8 N/A N/A

User Reference and Installation Guide 5-5

05-4561A01, Rev. A

5.10 T1- Channels 3-16 Connector

PIN TYPE SIGNAL

1 OUTPUT T1 Channel 13 Transmit Tip

2 OUTPUT T1 Channel 14 Transmit Tip

3 OUTPUT T1 Channel 15 Transmit Tip

60-pin Molex

4 OUTPUT T1 Channel 16 Transmit Tip

5 OUTPUT T1 Channel 9 Transmit Tip

6 OUTPUT T1 Channel 10 Transmit Tip

7 OUTPUT T1 Channel 11 Transmit Tip

8 OUTPUT T1 Channel 12 Transmit Tip

9 OUTPUT T1 Channel 5 Transmit Tip

10 OUTPUT T1 Channel 6 Transmit Tip

11 OUTPUT T1 Channel 7 Transmit Tip

12 OUTPUT T1 Channel 8 Transmit Tip

13 OUTPUT T1 Channel 3 Transmit Tip

14 OUTPUT T1 Channel 4 Transmit Tip

15 NC NC

16 NC NC

17 OUTPUT T1 Channel 4 Transmit Ring

18 OUTPUT T1 Channel 3 Transmit Ring

19 OUTPUT T1 Channel 8 Transmit Ring

20 OUTPUT T1 Channel 7 Transmit Ring

21 OUTPUT T1 Channel 6 Transmit Ring

22 OUTPUT T1 Channel 5 Transmit Ring

23 OUTPUT T1 Channel 12 Transmit Ring

User Reference and Installation Guide 5-6

05-4561A01, Rev. A

PIN TYPE SIGNAL

24 OUTPUT T1 Channel 11 Transmit Ring

25 OUTPUT T1 Channel 10 Transmit Ring

26 OUTPUT T1 Channel 9 Transmit Ring

27 OUTPUT T1 Channel 16 Transmit Ring

28 OUTPUT T1 Channel 15 Transmit Ring

29 OUTPUT T1 Channel 14 Transmit Ring

30 OUTPUT T1 Channel 13 Transmit Ring

31 INPUT T1 Channel 16 Receive Tip

32 INPUT T1 Channel 15 Receive Tip

33 INPUT T1 Channel 9 Receive Tip

34 INPUT T1 Channel 14 Receive Tip

35 INPUT T1 Channel 10 Receive Tip

36 INPUT T1 Channel 13 Receive Tip

37 INPUT T1 Channel 11 Receive Tip

38 INPUT T1 Channel 4 Receive Tip

39 INPUT T1 Channel 12 Receive Tip

40 INPUT T1 Channel 3 Receive Tip

41 INPUT T1 Channel 5 Receive Tip

42 INPUT T1 Channel 8 Receive Tip

43 INPUT T1 Channel 6 Receive Tip

44 INPUT T1 Channel 7 Receive Tip

45 NC NC

46 NC NC

47 INPUT T1 Channel 7 Receive Ring

48 INPUT T1 Channel 6 Receive Ring

User Reference and Installation Guide 5-7

05-4561A01, Rev. A

PIN TYPE SIGNAL

49 INPUT T1 Channel 8 Receive Ring

50 INPUT T1 Channel 5 Receive Ring

51 INPUT T1 Channel 3 Receive Ring

52 INPUT T1 Channel 12 Receive Ring

53 INPUT T1 Channel 4 Receive Ring

54 INPUT T1 Channel 11 Receive Ring

55 INPUT T1 Channel 13 Receive Ring

56 INPUT T1 Channel 10 Receive Ring

57 INPUT T1 Channel 14 Receive Ring

58 INPUT T1 Channel 9 Receive Ring

59 INPUT T1 Channel 15 Receive Ring

60 INPUT T1 Channel 16 Receive Ring

5.11 USB

PIN TYPE SIGNAL

1 OUTPUT +5V

2 I/O -Data

3 I/O +Data

USB Type A

4 N/A GND

User Reference and Installation Guide 5-8

05-4561A01, Rev. A

5.12 Voice Order Wire

PIN TYPE SIGNAL

1 N/A NC

2 INPUT PTT

3 N/A GND

4 OUTPUT PO-

RJ-48C Female

12 3 4 5 6 7 8

5 OUTPUT PO+

6 INPUT TI-

7 N/A GND

8 N/A NC

5.13 Data Order Wire

PIN TYPE SIGNAL

1 OUTPUT TX Clock -

2 OUTPUT TX Clock +

3 OUTPUT TX Data -

4 INPUT RX Data -

RJ-48C Female

12 3 4 5 6 7 8

5 INPUT RX Data +

6 OUTPUT TX Data +

7 INPUT RX Clock -

8 INPUT RX Clock +

05-4561A01, Rev. A

6 Appendix

6.1 Alarm Descriptions

Alarm Affected

Component Description LED to

RED

Alarm

Code Severity

Modem Fault

Lower

Modem The specified Modem card has

indicated a fault. Fault detection

is via reading Modem Hardware

Status from MODEM during

start-up and polling GPIO for

MODEM fault indication. Polling

interval 5 sec.

N/A 11 Critical

Modem

Comm

Failiure Lower

Modem The Controller Card is unable to

communicate with the specified

Modem card.

Modem

Lower

12 Critical

Modem Card

Removed

Lower

Modem The specified Modem card has

been removed from the IDU (only

if the specified Modem card has

been enabled for use). Fault

detection via card-detect logic.

N/A 13 Major

Modem Card

Installed

Lower

Modem The specified Modem card has

been installed into the IDU (only

if the specified Modem card is

not enabled for use). Fault

detection via card-detect logic.

Alarm is cleared after 5 minutes.

Modem

Lower

14 Info

Modem

Unlock Lower

Modem The demodulation functional

components of the modem have

lost lock to the incoming signal.

The data received through the

RF link is not valid. Fault

detection via modem status

polling. Polling interval: 1 sec.

N/A N/A Critical

User Reference and Installation Guide 6-2

05-4561A01, Rev. A

Alarm Affected

Component Description LED to

RED

Alarm

Code Severity

RSL Low

Lower

Modem RSSI is approaching the

minimum operational level of the

link as set during configuration.

Fault detection via modem

status polling, comparing RSSI

value to threshold value in

configuration table. Polling

interval 5 sec.

N/A N/A Major

Synthesizer

Unlock Lower

Modem Modem synthesizer has

unlocked. Fault detection via

modem status polling. Polling is

done in conjunction with Modem

Unlock polling.

N/A N/A Critical

SNR Low

Lower

Modem The signal-to-noise ratio is

below the minimum operational

level of the link as set during

configuration. Fault detection via

modem status polling,

comparing Eb/N0 value to

threshold value in configuration

table. Polling interval 5 sec.

N/A N/A Major

Modem Fault

Upper

Modem The specified Modem card has

indicated a fault. Fault detection

is via reading Modem Hardware

Status from MODEM during

start-up and polling GPIO for

MODEM fault indication. Polling

interval 5 sec.

N/A 16 Critical

Modem

Comm

Failiure Upper

Modem The Controller Card is unable to

communicate with the specified

Modem card.

Modem

Lower

17 Critical

Modem Card

Removed

Upper

Modem The specified Modem card has

been removed from the IDU

(only if the specified Modem

card has been enabled for use).

Fault detection via card-detect

logic.

N/A 18 Major

User Reference and Installation Guide 6-3

05-4561A01, Rev. A

Alarm Affected

Component Description LED to

RED

Alarm

Code Severity

Modem Card

Installed

Upper

Modem The specified Modem card has

been installed into the IDU (only

if the specified Modem card is

not enabled for use). Fault

detection via card-detect logic.

Alarm is cleared after 5 minutes.

Modem

Upper

19 Info

Modem

Unlock Upper

Modem The demodulation functional

components of the modem have

lost lock to the incoming signal.

The data received through the

RF link is not valid. Fault

detection via modem status

polling. Polling interval 1 sec.

N/A N/A Critical

RSL Low

Upper

Modem RSSI is approaching the

minimum operational level of the

link as set during configuration.

Fault detection via modem

status polling, comparing RSSI

value to threshold value in

configuration table. Polling

interval 5 sec.

N/A N/A Major

SNR Low

Upper

Modem The signal-to-noise ratio is

below the minimum operational

level of the link as set during

configuration. Fault detection via

modem status polling,

comparing Eb/N0 value to

threshold value in configuration

table. Polling interval 5 sec.

N/A N/A Major

Synthesizer

Unlock Upper

Modem Modem synthesizer has

unlocked. Fault detection via

modem status polling. Polling is

done in conjunction with Modem

Unlock polling.

N/A N/A Critical

Fan Failure Controller The Fan rotational speed is too

low. (Controller card LED

flashed red rather than orange).

Fault detection via polling fan

controller status. Polling interval

10 sec.

Controller 21 Critical

User Reference and Installation Guide 6-4

05-4561A01, Rev. A

Alarm Affected

Component Description LED to

RED

Alarm

Code Severity

Controller

Card Fault

Controller The CPU has detected a fault in

the controller card. (Controller

card LED flashes red rather than

orange). Fault detection via

software.

Controller 22 Critical

Low Battery

Voltage

Controller The CPU has detected a low-

battery voltage condition.

(Controller card LED flashes red

rather than orange). Fault

detection via software polling

RTC via controller FPGA.

Controller 23 Info

Power Supply

Fault Lower

Power

Supply

The Power Supply card has

indicated a fault. Fault detection

via polling GPIO. Polling interval

5 sec.

N/A 31 Critical

Power Supply

Card

Removed

Lower

Power

Supply

The specified Power Supply

card has been removed from the

IDU. Fault detection via card-

detect logic.

N/A 32 Major

Power Supply

Fault Upper

Power

Supply

The Power Supply card has

indicated a fault. Fault detection

via polling GPIO. Polling interval

5 sec.

N/A 36 Critical

Power Supply

Card

Removed

Upper

Power

Supply

The specified Power Supply

card has been removed from the

IDU. Fault detection via card-

detect logic.

N/A 37 Major

Standard I/O

Card

Removed

StdIO The Standard I/O card has been

removed from the IDU. Fault

detect via card-detect logic.

N/A 41 Critical

Ethernet

Payload

Disconnect

StdIO There is no cable detected at

either Ethernet payload on

Standard I/O card (only if

Ethernet mode enabled). Fault

detection via polling of Ethernet

PHY. Polling interval 5 sec.

Standard

I/O

42 Critical

User Reference and Installation Guide 6-5

05-4561A01, Rev. A

Alarm Affected

Component Description LED to

RED

Alarm

Code Severity

Framer

Initialization

Timeout

StdIO There is an Initalization wait for

Framer to turn ON the Framer

Receiver side after turning ON

the Modem/ODU. Fault

detection via polling. Poll only

after timeout to detect.

Standard

I/O

43 Critical

Mini I/O Card

Removed

MiniIO The Mini I/O card has been

removed from the IDU (only if

Mini I/O card has been enabled

for use). Fault detection via

card-detect logic.

Standard

I/O

46 Critical

Mini I/O Card

Installed

MiniIO The Mini I/O card has been

installed into the IDU (only if

Mini I/O card is noted enabled

for use). Fault detection via

card-detect logic. Alarm is

cleared after 5 minutes.

Standard

I/O

47 Info

Optional I/O

Card

Removed

OptIO The Optional I/O card has been

removed from the IDU (only if

the Optional I/O card has been

enabled for use). Fault detection

via card-detect logic.

N/A 26 Critical

Optional I/O

Card Installed

OptIO The Optional I/O card has been

installed into the IDU (only if the

Optional I/O card is not enabled

for use). Fault detection via

card-detect logic. Alarm is

cleared after 5 minutes.

Optional

I/O

27 Info

User Reference and Installation Guide 6-6

05-4561A01, Rev. A

Alarm Affected

Component Description LED to

RED

Alarm

Code Severity

T1/E1

Channel

Alarm Ch x

StdIO (1-16)

OptIO (17-

32)

There is either no cable

detected at the specified E1/T1

channel port on Standard I/O

Card or there is an AIS condition

detected (only for active T1/E1

channels). Fault detection via

polling of LIUs on Standart I/O

card and Optional I/O Card

when installed. Polling interval 2

channels per 1 sec. Report of

this alarm in the

GUI/Syslog/Alarm history shall

indicate whether this is a

disconnect or AIS condition.

Standard

I/O when

1-16

Optional

I/O when

17-32

Turn LED

orange

rather

than RED

51-58

(1-16)

61-68

(17-

32)

Critical

T1/E1 Test

Mode

StdIO The user has selected a T1/E1

test mode (loopback or Tx

Data). This alarm shall be set

when the user sets the testmode

for any of the T1/E1 channels,

and cleared when all T1/E1

channels are not in loopback

and Tx Data is normal.

N/A 59 Info

BERT/LB/CW

Test Mode

StdIO This alarm shall be set when the

user enables either BERT,,

Loopback, or CW mode, and

cleared when all BERT,

Loopback and CW modes are

disabled.

N/A 69 Info

ODU Fault

Lower

ODU The ODU has indicated a fault

condition. Fault detection via

polling of ODU or unsolicited

message, if supported. Polling

interval 5 sec. Polling done via

API functional call. Report of this

alarm in the GUI/Syslog/Alarm

history shall indicate the fault

code from the ODU.

N/A 71 Critical

ODU Comm

Failure Lower

ODU The IDU is unable to

communicate with the ODU.

This could be a problem with the

ODU or a problem with the cable

connecting the ODU to the IDU.

N/A 72 Critical

User Reference and Installation Guide 6-7

05-4561A01, Rev. A

Alarm Affected

Component Description LED to

RED

Alarm

Code Severity

ODU Fault

Upper

ODU The ODU has indicated a fault

condition or unsolicited

message, if supported. Fault

detection via polling of ODU.

Polling interval 5 sec. Polling

done via API function call.

Report of this alarm in the

GUI/Syslog/Alarm history shall

indicate the fault code from the

ODU.

N/A 73 Critical

ODU Comm

Failure Upper

ODU The IDU is unable to

communicate with the ODU.

This could be a problem with the

ODU or a problem with the cable

connecting the ODU to the IDU.

N/A 74 Critical

Protection

Switch

MODEM/OD

This alarm shall be set when an

AL1 command is received from

the active MODEM/ODU, then

cleared when an AL2 command

is received from the standby

MODEM/ODU. Report of this

alarm in the GUI/Syslog/Alarm

history shall indicate the fault

code from the ODU, if received.

N/A 75 Critical

East ATPC Tx

at Max Power

ODU The IDU is unable to increase

the Tx Power as requested by

link partner due to maximum

power being reached. Maximum

power is specified in the

configuration table.

N/A 76 Info

West ATPC

Tx at Max

Power

ODU The IDU is unable to increase

the Tx Power as requested by

link partner due to maximum

power being reached. Maximum

power is specified in the

configuration table.

N/A 78 Info

Link Fault IDU Failed to receive link heartbeat

from link partner via Radio

Overhead (ROH) channel. Fault

detection via timeout counter,

which is reset via reception of

link heartbeat message.

N/A 81 Critical

User Reference and Installation Guide 6-8

05-4561A01, Rev. A

Alarm Affected

Component Description LED to

RED

Alarm

Code Severity

Remote Fault IDU Link Partner IDU indicating it

has a fault condition. Local IDU

receives Link Partner Fault

detection via Radio Overhead

(ROH) channel message.

N/A 82 Info

Encryption

Failure

IDU Data is not being decrypted

properly due to encryption key

mismatch between link partners.

Fault detection via software

detection of unreadable ROH

messages from link partner.

N/A 83 Critical

Encryption

OneWay

IDU Only one IDU has data

encryption enabled. Fault

detection via software messages

to/from link partner.

N/A 84 Major

External

Alarm 1

External The external Alarm 1 input has

been activated. Fault detection

via polling GPIO. Polling interval

1 sec.

N/A 91 Info

External

Alarm 2

External The external Alarm 2 input has

been activated. Fault detection

via polling GPIO. Polling interval

1 sec.

N/A 92 Info

External

Alarm 3

External The external Alarm 3 input has

been activated. Fault detection

via polling GPIO. Polling interval

1 sec.

N/A 93 Info

External

Alarm 4

External The external Alarm 4 input has

been activated. Fault detection

via polling GPIO. Polling interval

1 sec.

N/A 94 Info

Remote IDU

Alarm

Link Partner

IDU

The link partner IDU has

indicated an alarm condition via

ROH.

N/A 95 Major

Remote IDU

External

Alarm 1

Link Partner

External

The link partner IDU has

indicated via ROH its external

alarm input 1 has been

activated.

N/A 96 Info

User Reference and Installation Guide 6-9

05-4561A01, Rev. A

Alarm Affected

Component Description LED to

RED

Alarm

Code Severity

Remote IDU

External

Alarm 2

Link Partner

External

The link partner IDU has

indicated via ROH its external

alarm input 2 has been

activated.

N/A 97 Info

Remote IDU

External

Alarm 3

Link Partner

External

The link partner IDU has

indicated via ROH its external

alarm input 3 has been

activated.

N/A 98 Info

Remote IDU

External

Alarm 4

Link Partner

External

The link partner IDU has

indicated via ROH its external

alarm input 4 has been

activated.

N/A 99 Info

STM Loss of

Clock

IDU The SDH/SONET clock has lost

lock. Fault detection via polling

of LIU.

N/A Solid Critical

STM RS_LOS IDU The SDH/SONET has a Loss of

Signal Defect. Fault detection

via polling of LIU.

N/A Solid Critical

STM RS_B1 IDU The SDH/SONET Mux/Demux

has a B1 Defect. Fault detection

via polling of RS_B1_T bit in

STM-1 Core. Alternate detection

via Interrupt enabled in STM-1

core.

N/A Solid Major

STM RS_LOF IDU The SDH/SONET Mux/Demux

has a Loss of Frame Defect.

Fault detection via polling of

RS_LOF_T bit in STM-1 Core.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Critical

STM

RS_OOF

IDU The SDH/SONET Mux/Demux

has a Out of Frame Defect.

Fault detection via polling of

RS_OOF_T bit in STM-1 Core.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Critical

User Reference and Installation Guide 6-10

05-4561A01, Rev. A

Alarm Affected

Component Description LED to

RED

Alarm

Code Severity

STM RS_TIM IDU The SDH/SONET Mux/Demux

has a Trace Identifier Mismatch

Defect. Fault detection via

polling of RS_TIM_T bit in STM-

1 Core. Alternate detection via

Interrupt enabled in STM-1 core.

N/A Solid Major

STM MS-AIS IDU The SDH/SONET Mux/Demux

has detected an AIS at the

Multiplexer Level. Fault

detection via polling of

MS_AIS_T bit in STM-1 Core.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Critical

STM MS-REI IDU The SDH/SONET Mux/Demux

has detected a Remote Error at

the Multiplexer Level. Fault

detection via polling of

MS_REI_T bit in STM-1 Core.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Major

STM MS-RDI IDU The SDH/SONET Mux/Demux

has detected an Remote Defect

at the Multiplexer Level. Fault

detection via polling of

MS_RDI_T bit in STM-1 Core.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Major

STM MS_B2 IDU The SDH/SONET Mux/Demux

has a B2 Defect at the Multiplex

level. Fault detection via polling

of MS_B2_T bit in STM-1 Core.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Major

STM AU-AIS

IDU The SDH/SONET Mux/Demux

has detected an AIS at the AU

Level. Fault detection via polling

of AU_AIS_T bit in STM-1 Core.

Where ‘x’ is the HP index.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Critical

User Reference and Installation Guide 6-11

05-4561A01, Rev. A

Alarm Affected

Component Description LED to

RED

Alarm

Code Severity

STM AU-LOP

IDU The SDH/SONET Mux/Demux

has detected an Loss of Pointer

Defect at the AU Level. Fault

detection via polling of

AU_LOP_T bit in STM-1 Core.

Where ‘x’ is the HP index.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Critical

STM HP-

UNEQ x

IDU The SDH/SONET Mux/Demux

HP number ‘x’ is Unequipped.

Fault detection via polling of

HP_UNEQ_T bit in STM-1 Core.

Where ‘x’ is the HP index.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Critical

STM HP-TIM

IDU The SDH/SONET Mux/Demux

HP number ‘x’ has a Trace

Identifier Mismatch. Fault

detection via polling of

HP_TM_TIM_T bit in STM-1

Core. Where ‘x’ is the HP index.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Major

STM HP-REI

IDU The SDH/SONET Mux/Demux

HP number ‘x’ has a Remote

Error Indication. Fault detection

via polling of HP_REI_T bit in

STM-1 Core. Where ‘x’ is the HP

index. Alternate detection via

Interrupt enabled in STM-1 core.

N/A Solid Critical

STM HP-RDI

IDU The SDH/SONET Mux/Demux

HP number ‘x’ has a Remote

Defect Indication. Fault

detection via polling of

HP_RDI_T bit in STM-1 Core.

Where ‘x’ is the HP index.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Critical

User Reference and Installation Guide 6-12

05-4561A01, Rev. A

Alarm Affected

Component Description LED to

RED

Alarm

Code Severity

STM HP-PLM

IDU The SDH/SONET Mux/Demux

HP number ‘x’ has a Path

Identifier Mismatch. Fault

detection via polling of

HP_PLM_T bit in STM-1 Core.

Where ‘x’ is the HP index.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Critical

STM HP_B3 x IDU The SDH/SONET Mux/Demux

HP number ‘x’ has a CRC Error.

Fault detection via polling of

HP_B3_T bit in STM-1 Core.

Where ‘x’ is the HP index.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Major

STM TU-LOM

lkm

IDU The SDH/SONET Mux/Demux

TU number ‘x’ has a Loss of

Multiframe. Fault detection via

polling of TU_LOMF_T bit in

STM-1 Core. Where ‘lkm’ is the

TU index as LKM numbering.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Critical

STM TU-AIS

lkm

IDU The SDH/SONET Mux/Demux

TU number ‘x’ has an AIS. Fault

detection via polling of

TU_AIS_T bit in STM-1 Core.

Where ‘lkm’ is the TU index as

LKM numbering. Alternate

detection via Interrupt enabled in

STM-1 core.

N/A Solid Critical

STM TU-LOP

lkm

IDU The SDH/SONET Mux/Demux

TU number ‘x’ has a Loss of

Pointer Defect. Fault detection

via polling of TU_LOP_T bit in

STM-1 Core. Where ‘lkm’ is the

TU index as LKM numbering.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Critical

User Reference and Installation Guide 6-13

05-4561A01, Rev. A

Alarm Affected

Component Description LED to

RED

Alarm

Code Severity

STM LP-

UNEQ lkm

IDU The SDH/SONET Mux/Demux

LP number ‘x’ is Unequipped.

Fault detection via polling of

LP_UNEQ_T bit in STM-1 Core.

Where ‘lkm’ is the LP index as

LKM numbering. Alternate

detection via Interrupt enabled in

STM-1 core.

N/A Solid Info

STM LP-TIM

lkm

IDU The SDH/SONET Mux/Demux

LP number ‘x’ has a Trace

Identifier Mismatch. Fault

detection via polling of

LP_TM_TIM_T bit in STM-1

Core. Where ‘lkm’ is the LP

index as LKM numbering.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Major

STM LP-REI

lkm

IDU The SDH/SONET Mux/Demux

LP number ‘x’ has a Remote

Error Indication. Fault detection

via polling of LP_REI_T bit in

STM-1 Core. Where ‘lkm’ is the

LP index as LKM numbering.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Critical

STM LP-RDI

lkm

IDU The SDH/SONET Mux/Demux

LP number ‘x’ has a Remote

Defect Indication. Fault

detection via polling of

LP_RDI_T bit in STM-1 Core.

Where ‘lkm’ is the LP index as

LKM numbering. Alternate

detection via Interrupt enabled in

STM-1 core.

N/A Solid Critical

STM LP-PLM

lkm

IDU The SDH/SONET Mux/Demux

LP number ‘x’ has a Path

Identifier Mismatch. Fault

detection via polling of

LP_PLM_T bit in STM-1 Core.

Where ‘lkm’ is the LP index as

LKM numbering. Alternate

detection via Interrupt enabled in

STM-1 core.

N/A Solid Critical

User Reference and Installation Guide 6-14

05-4561A01, Rev. A

Alarm Affected

Component Description LED to

RED

Alarm

Code Severity

STM LP-RFI

lkm

IDU The SDH/SONET Mux/Demux

LP number ‘x’ has a Remote

Fault Indication. Fault detection

via polling of LP_RFI_T bit in

STM-1 Core. Where ‘lkm’ is the

LP index as LKM numbering.

Alternate detection via Interrupt

enabled in STM-1 core.

N/A Solid Critical

STM LP-BIP2

lkm

IDU The SDH/SONET Mux/Demux

LP number ‘x’ has a CRC Error.

Fault detection via polling of

LP_BIP2_T bit in STM-1 Core.

Where ‘lkm’ is the LP index as

LKM numbering. Alternate

detection via Interrupt enabled in

STM-1 core.

N/A Solid Major

6.2 Abbreviations & Acronyms

AIS Alarm Indication Signal

BER Bit Error Rate

Codec Coder-Decoder

CPU Central Processing Unit

DB Decibel

DBm Decibel relative to 1 mW

DCE Data Circuit-Terminating Equipment

DTE Data Terminal Equipment

EIRP Effective Isotropic Radiated Power

FCC Federal Communications Commission

FEC Forward Error Correction

FPGA Field Programmable Gate Array

GPIO General Purpose Input/Output

IF Intermediate frequency

IP Internet Protocol

LED Light-emitting diode

User Reference and Installation Guide 6-15

05-4561A01, Rev. A

LOS Line of Sight

MIB Management Information Base

Modem Modulator-demodulator

ms Millisecond

NC Normally closed

NMS Network Management System

OAM&P Operations, Administration, Maintenance, and Provisioning

OC-3 Optical Carrier level 3

ODU Outdoor Unit

PCB Printed circuit board

POP Point of Presence

QAM Quadrature Amplitude Modulation

QPSK Quadrature Phase Shift Keying

RF Radio Frequency

RSL Received Signal Level (in dBm)

RSSI Received Signal Strength Indicator/Indication

RX Receiver

SDH Synchronous Digital Hierarchy

SNMP Simple Network Management Protocol

SNR Signal-to-Noise Ratio

SDIDUTM Software Defined Indoor Unit (CarrierComm trademark)

SONET Synchronous Optical Network

STM-1 Synchronous Transport Module 1

TCP/IP Transmission Control Protocol/Internet Protocol

TTL Transistor-transistor logic

TX Transmitter

IN CASE OF DIFFICULTY...

MDS products are designed for long life and trouble-free operation. However, this equipment, as

with all electronic equipment, may have an occasional component failure. The following

information will assist you in the event that servicing becomes necessary.

TECHNICAL ASSISTANCE

Technical assistance for MDS products is available from our Technical Support Department

during business hours (8:00 A.M.–5:30 P.M. Eastern Time). When calling, please give the

complete model number of the radio, along with a description of the trouble/symptom(s) that you

are experiencing. In many cases, problems can be resolved over the telephone, without the need

for returning the unit to the factory. Please use one of the following means for product assistance:

Phone: 585 241-5510 E-Mail: mailto:TechSupport@microwavedata.com

FAX: 585 242-8369 Web: http://www.microwavedata.com/

FACTORY SERVICE

Component level repair of radio equipment is not recommended in the field. Many components

are installed using surface mount technology, which requires specialized training and equipment

for proper servicing. For this reason, the equipment should be returned to the factory for any PC

board repairs. The factory is best equipped to diagnose, repair and align your radio to its proper

operating specifications.

If return of the equipment is necessary, you will be issued a Service Request Order (SRO)

number and return shipping address. The SRO number will help expedite the repair so that the

equipment can be repaired and returned to you as quickly as possible. Please be sure to include

the SRO number on the outside of the shipping box, and on any correspondence relating to the

repair. No equipment will be accepted for repair without an SRO number.

A statement should accompany the radio describing, in detail, the trouble symptom(s), and a

description of any associated equipment normally connected to the radio. It is also important to

include the name and telephone number of a person in your organization who can be contacted if

additional information is required.

The radio must be properly packed for return to the factory. The original shipping container and

packaging materials should be used whenever possible.

When repairs have been completed, the equipment will be returned to you by the same shipping

method used to send it to the factory. Please specify if you wish to make different shipping

arrangements. To inquire about an in-process repair, you may contact our Product Services

Group at 585-241-5540 (FAX: 585-242-8400), or via e-mail at:

ProductServices@microwavedata.com

User Reference and Installation Guide 6-2

GE MDS DS-SERIES4 MDS Four.9 Series Digital Radio System User Manual Manual Rev 1

GE MDS LLC MDS Four.9 Series Digital Radio System Manual Rev 1

user manual

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