Microwave Data Systems FOUR.9 Series User manual

Microwave Data Systems
Digital Radio System
MDS FOUR.9 Series
MDS SIX.4 Series
User Reference and Installation Guide
PRELIMINARY
Part No. 05-4561A01, Rev. A
Date: 9 JUNE 2006

© 2006 Microwave Data Systems Inc. All Rights Reserved.
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’ 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
1SAFETY PRECAUTIONS ......................................................................................................................1-1
2SYSTEM DESCRIPTION .......................................................................................................................2-1
2.1 About This Manual............................................................................................................................2-1
2.2 Introduction .......................................................................................................................................2-1
2.3 System Features ...............................................................................................................................2-5
2.4 Physical Description ........................................................................................................................2-6
2.4.1 Model Types ................................................................................................................................2-6
2.4.2 Options ........................................................................................................................................2-8
2.4.3 Front Panel Indicators .................................................................................................................2-8
2.4.4 Front Panel Connections .............................................................................................................2-9
2.5 System Description ........................................................................................................................2-13
2.6 Consecutive Point Architecture ....................................................................................................2-16
2.7 2 + 0 (East-West) Configuration ....................................................................................................2-18
2.8 1+1 Protection .................................................................................................................................2-19
2.9 1 + 1 Multi-hop Repeater Configuration .......................................................................................2-20
2.10 Data Interfaces ................................................................................................................................2-22
2.11 Power Management ........................................................................................................................2-22
2.12 MDS Digital Radio Series Software and Network Management.................................................2-23
3INSTALLATION .....................................................................................................................................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 .................................................................................................3-17
3.7 Installation of the Digital Radio Series .........................................................................................3-20
3.7.1 Installing the Software Defined IDUTM .......................................................................................3-20
3.7.2 Installing the ODU .....................................................................................................................3-21
3.7.3 Routing the ODU/ SDIDUTM Interconnect Cable .......................................................................3-23
3.8 Quick Start Guide ...........................................................................................................................3-25
3.8.1 Materials Required ....................................................................................................................3-25
3.8.2 Grounding the ODU...................................................................................................................3-25

3.8.3 Grounding the SDIDUTM ............................................................................................................3-27
3.8.4 Connecting the SDIDUTM to the PC and Power Source............................................................3-27
3.8.5 SDIDUTM Configuration..............................................................................................................3-28
3.8.6 ODU Antenna Alignment ...........................................................................................................3-30
3.8.7 Quick Start Settings...................................................................................................................3-31
3.9 Documenting MDS FOUR.9 Series Configuration .......................................................................3-32
4SUMMARY SPECIFICATIONS..............................................................................................................4-1
5FRONT PANEL CONNECTORS ...........................................................................................................5-1
5.1 DC Input (Power) Connector............................................................................................................5-1
5.2 Ethernet 100BaseTX Payload Connector 1-2.................................................................................5-1
5.3 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
6APPENDIX .............................................................................................................................................6-1
6.1 Alarm Descriptions...........................................................................................................................6-1
6.2 Abbreviations & Acronyms............................................................................................................6-14

© 2006 Microwave Data Systems Inc. All Rights Reserved. MDS FOUR.9 Series
05-4561A01, Rev. A
1 Safety Precautions
PLEASE READ THESE SAFETY PRECAUTIONS!
RF Energy Health Hazard—FOUR.9 Series
The radio equipment described in this guide employs 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 inches) 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.
RF Energy Health Hazard—SIX.4 Series
The radio equipment described in this guide employs 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 3.17 meters (124.80 inches) 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

User Reference and Installation Guide 1-2
© 2006 Microwave Data Systems Inc. All Rights Reserved. MDS Digital Radio Series
05-4561A01, Rev. A
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.
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.

© 2006 Microwave Data Systems Inc. All Rights Reserved. MDS FOUR.9 Series
05-4561A01, Rev. A
2 System Description
2.1 About This Manual
This manual is written for those who are involved in the installation and use of the
MDS FOUR.9 Series or MDS SIX.4 Series Digital Radio System, including installation
technicians, site evaluators, project managers, and network engineers. The transceivers are
comprised of a Software Defined Indoor UnitTM (SDIDUTM) and outdoor unit (ODU). The SDIDUTM
is a product and trademark of CarrierComm.
This manual assumes the reader has a basic understanding of how to install hardware, use
Windowsbased software, and operate test equipment. For the purposes of this manual, the
radios are referred to as the “Digital Radio Series” except where it is necessary to make a
distinction between the models covered or their operating frequency ranges.
2.2 Introduction
The Microwave Data Systems family of digital radios provides high capacity transmission,
flexibility, features, and convenience for wireless communications networks. These radios
represent a new microwave architecture that is designed to address universal applications for
both PDH and SDH platforms. This advanced technology platform provides the flexibility
customers need for their current and future network requirements.
The radio family is based on a common platform used 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 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.” It 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
© 2006 Microwave Data Systems Inc. All Rights Reserved. MDS Digital Radio Series
05-4561A01, Rev. A
• 16E1 or T1 for cellular backhaul, enterprise voice applications and voice network redundancy
The MDS SIX.4 Series digital radio family operates in the FCC Fixed Microwave Services band
of 5.925 to 6.425 GHz, which is generically referred to as the “6.4 GHz band.” It supports four
types of user data payload connectivity as follows:
• Gigabit Ethernet intelligent bridging between two locations without the delay and expense of
installing cable or traditional microwave.
• Scalable Ethernet capability of 16 to 131 Mbps is included. These scalable radios provide
LAN connectivity and offer performance trade-offs between operational bandwidths, data
rates, and distance.
• 32 T1 for cellular backhaul, enterprise voice applications and voice network redundancy with
85 Mbps of Ethernet
• SONET (Synchronous Optical Network)
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 Digital Radio Series is a cost effective alternative to leased lines with carrier-class
quality of performance. The Digital Series radio 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 Digital Series includes integrated Network Management functionality and design features that
enable simple commissioning 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 to ensure that service to the end user is not interrupted.
The Digital Series radio system 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 Rack
Unit (1RU) 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.

User Reference and Installation Guide 2-3
© 2006 Microwave Data Systems Inc. All Rights Reserved. MDS Digital Radio Series
05-4561A01, Rev. A
Core Access
Network
Indoor Unit
Indoor Unit
Indoor Unit
Outdoor
Unit
Outdoor
Unit
Outdoor
Unit
Outdoor
Unit
Outdoor
Unit
Outdoor
Unit
Figure 2-1. MDS Digital Radio Series SDIDUTM and ODU Architecture
Table 2-1 lists key features that Digital Radio Series technology offers to those involved in the
design, deployment and support of broadband fixed wireless networks.
Table 2-1 Key Benefits and Advantages of MDS Digital Radio Series
Benefits Advantages to Providers/Customers Reference
Wireless license-free system (FOUR.9
only): ISM bands do not require expensive
license band fees or incur licensing delays.
Wireless licensed system (SIX.4 only):
No interference from other services as this
band is licensed to the user.
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:
FOUR.9 Series—34 Mbps, 50 Mbps or
100 Mbps.
SIX.4 Series—16 to 131 Mbps
Increases available bandwidth of network.
Allows customer full use of revenue-
generating payload channel.
149H146H2.2– 150H 147H2.5

User Reference and Installation Guide 2-4
© 2006 Microwave Data Systems Inc. All Rights Reserved. MDS Digital Radio Series
05-4561A01, Rev. A
Benefits Advantages to Providers/Customers Reference
Scalable and spectrally efficient system.
Separate networks for radio
overhead/management and user payload.
Up to 16 (FOUR.9 Series) or 32 (SIX.4
Series) T1/E1 wayside channels support
extension of PBX connectivity between
buildings without additional leased-line
costs.
Lowers total cost of ownership.
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 Digital Radio Series units, or more
rings without interruption of service.
A separate management channel allows
for a dedicated maintenance ring with
connections to each radio on the ring.
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
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 (FOUR.9 Series) or 101
(SIX.4 Series) 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.
2.12

User Reference and Installation Guide 2-5
© 2006 Microwave Data Systems Inc. All Rights Reserved. MDS Digital Radio Series
05-4561A01, Rev. A
Benefits Advantages to Providers/Customers Reference
Simplifies network upgrades with remote
software upgrades.
Allows for mass deployment.
2.3 System Features
 Selectable Rates and Interfaces
o Up to 16 (FOUR.9 Series) or 32 (SIX.4 Series) x E1/T1 (wayside channels)
o 100BaseTX/Ethernet: Scalable 25-50 Mbps (FOUR.9 Series) or 16 to 131Mbps
(SIX.4 Series)
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)
 Selectable Spectral Efficiency of 0.8 to 6.25 bits/Hz (FOUR.9 Series) or 5 to 7 bits/Hz
(SIX.4 Series). These figures include FEC and spectral shaping effects.
 16 – 64 QAM Modulation (FOUR.9 Series) or 32 – 64 QAM Modulation (SIX.4 Series)
 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 (FOUR.9 Series):
o 24.4 dBm at 4.9 GHz (High Power)
o 17.1 dBm at 4.9 GHz (Low Power)
 Peak output power at antenna port (SIX.4 Series):
o 26 dBm at 6.4 GHz (High Power)
o 8 dBm at 6.4 GHz (Low Power)

User Reference and Installation Guide 2-6
© 2006 Microwave Data Systems Inc. All Rights Reserved. MDS Digital Radio Series
05-4561A01, Rev. A
 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 Series-100 radios
and Series-50 Ethernet models (Consult factory for availability)
2.4 Physical Description
The following section details the physical features of the Digital Series digital radios
• Model types
• Front panel indicators
• Front panel connections
2.4.1 Model Types
158H155HTable 2-2 lists the radio series 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 Digital Radio Series SDIDUTM Model Types
MODEL NUMBER* FULL DUPLEX
THROUGHPUT
DATA
INTERFACE
WAYSIDE
SDIDUxxMNVN 100 Mbps
Aggregate
(50 Mbps full
duplex)
100 BaseTX Two
T1/E1s

User Reference and Installation Guide 2-7
© 2006 Microwave Data Systems Inc. All Rights Reserved. MDS Digital Radio Series
05-4561A01, Rev. A
MODEL NUMBER* FULL DUPLEX
THROUGHPUT
DATA
INTERFACE
WAYSIDE
SDIDUxxMPVN 100 Mbps
Aggregate
(50 Mbps full
duplex), 1+1
Protection or 2+0
100 BaseTX Two
T1/E1s
SDIDUxxMNCN 200 Mbps
Aggregate
(100 Mbps full
duplex)
100 BaseTX Two
T1/E1s
SDIDUxxMPCN 200 Mbps
Aggregate
(100 Mbps full
duplex), 1+1
Protection or 2+0
100 BaseTX Two
T1/E1s
SDIDUxxMNTN 68 Mbps Aggregate
(34 Mbps full
duplex) + scalable
Ethernet
1-16xE1/T1 Scalable
Ethernet, 2
Mbps
SDIDUxxMPTN 72 Mbps Aggregate
(36 Mbps full
duplex), 1+1
Protection or 2+0
1-16xE1/T1
Scalable
Ethernet, 2
Mbps
* “xx” changes in accordance with the frequency range of radio; 49 for 4.9 GHz, 64 for 6.4 GHz)
Table 2-3 MDS Digital Radio Series ODU Model Types
PRODUCT NAME MODEL NUMBER ANTENNA
MDS FOUR.9 - ODU49e ODU4900MEP External antenna required
MDS SIX.4 – ODU* ODU6400MLL
Transmit: 5929 – 6110 MHz
Receive: 6181 – 6362 MHz
External antenna required
MDS SIX.4 – ODU* ODU6400MLH
Transmit: 6181 – 6362 MHz
Receive: 5929 – 6110 MHz
External antenna required

User Reference and Installation Guide 2-8
© 2006 Microwave Data Systems Inc. All Rights Reserved. MDS Digital Radio Series
05-4561A01, Rev. A
MDS SIX.4 – ODU* ODU6400MHL
Transmit: 5988 – 6169 MHz
Receive: 6240 – 6421 MHz
External antenna required
MDS SIX.4 – ODU* ODU6400MHH
Transmit: 6240 – 6421 MHz
Receive: 5988 – 6169 MHz
External antenna required
* To support the FCC Part 101 6.4 GHz band plan, four separate ODUs are required to cover the
frequencies as listed above.
2.4.2 Options
The following items are also available:
• AC/DC power supply
• Data Encryption
• OC-3/STM-1 Mini-IO Module
Please consult the factory for more information.
2.4.3 Front Panel Indicators
All models of the Digital Radio 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 a 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. Front Panel LEDs: SDIDUTM Configuration for 1+0 Configuration
The modem status LED indicates the modem status as described in Table 2-4.

User Reference and Installation Guide 2-9
© 2006 Microwave Data Systems Inc. All Rights Reserved. MDS Digital Radio Series
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 through 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 162H 159HFigure 2-3 for an example of the SDIDUTM front panel followed by a
descriptive text of the connections.

User Reference and Installation Guide 2-10
© 2006 Microwave Data Systems Inc. All Rights Reserved. MDS Digital Radio Series
05-4561A01, Rev. A
Figure 2-3. Front Panel Connections, 1+1 Protection: SDIDUTM

User Reference and Installation Guide 2-11
© 2006 Microwave Data Systems Inc. All Rights Reserved. MDS Digital Radio Series
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 2-12
© 2006 Microwave Data Systems Inc. All Rights Reserved. MDS Digital Radio Series
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 2-13
© 2006 Microwave Data Systems Inc. All Rights Reserved. MDS Digital Radio Series
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 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 from the IDU
rack to the antenna can result in significant signal losses, which would be difficult to avoid without
the use of expensive coaxial cable or a 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.