Andrew MDL2400MDR User Manual

OPERATION AND MAINTENANCE MANUAL

For the

MOBILE DATA RADIO AND

BASE DATA RADIO

MANUAL NO. 385700-1006

REVISION 6

The information set forth in this document and all rights in and to inventions
disclosed herein, and patents which might be granted thereon disclosing,
employing or covering the materials, methods, techniques or apparatus
described herein are the exclusive property of Andrew Corporation.

This document is an operation and maintenance manual. No disclosure or
reproduction of the information or drawings shall be made of any other
purpose without the prior written consent of Andrew. Use of the information
contained herein to fabricate or assemble any item in whole or in part is
expressly prohibited

2601 Telecom Parkway, Richardson, Texas 75082-3521

.

TEL [phone] FAX [phone]

385700-1006-006 FCC REQUIREMENTS

SAFETY SUMMARY

High voltage is used in the operation of
this equipment. Death on contact may
result, if personnel fail to observe t he
following safety precautions:

• Do not be misled by the term “Low Voltage.” Potentials as low as 50 Volts may cause
death under adverse conditions.

• Do not crush, puncture, disassemble or otherwise mutilate batteries. Leaking batteries
can cause serious damage to equipment and injur y to per sonnel.

• Do not remove covers or access plates on the equipment, unless you are authorized to do
so.

• Do not work on electronic equipment unless t here is anot her person nearby who is f am iliar
with the operation of the equipment and is trained in administering first aid.

• Whenever possible, disconnect the equipment from the power source before beginning
maintenance.

• To prevent electrical shock or damage to the equipment, do not operate it until you
thoroughly understand the operation and function of all controls, indicators, and
connectors.

• Turn off all power to the equipment befor e r eplacing any fuses.

FIRST AID

In case of electrical shock:

• Do not try to pull or g r ab the individual.

• If possible, turn off the electrical power.

• If you cannot turn of f the elect rical power, pull, push, or lif t the per son to saf et y using a dr y

wooden pole, a dry rope, or some other insulating material.

• Send for help as soon as possible.

• After the injured person is no longer in contact with the source of electr ical shock, move

the person a short distance away and immediately administer first aid and artificial
resuscitation as required.

Document use is restricted to that described on cover A

385700-1006-006 FCC REQUIREMENTS

WARNING

This device complies with Part 15 of the FCC rules. Operation is
subject to the followi ng two conditions:

(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including

interference that may cause undesired operation

WARNING

The Base Data Radio and Mobile Data Radios are unlicensed
devices operating under the conditions of FCC part 15
regulations. This equipment is intended to be installed and
operated by professional parties. It is the responsibil ity of those
parties to insure that the equipment is operated in compliance
with the applicable FCC part 15 specifications and the
requirements contained in this document.

Document use is restricted to that described on cover B

385700-1006-006 FCC REQUIREMENTS

LIST OF ABBREVIATIONS AND ACRONYMS

NOTE

All abbreviations/acronyms used in this
manual, other than those listed on this
page, are used per MIL-STD-12D.

BDR Base Data Radio
CDMA Code Division Multiple Access
EEPROM Electrically Erasable Programmable Read O nly Memory
ESDS Electrostatic Discharge Sensitive
LCP Local Command Processor
LRU Line Replaceable Unit
MDR Mobile Data Radio
PC Personal Computer
PN Pseudo Noise
RBW Resolution Bandwidth
RCS Radio Communication Subsystem
SSR Spr ead Spect rum Radio
TDMA Time Division Multiple Access
VBW Video Bandwidth

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385700-1006-006 LIST OF REFERENCE DOCUMENTS

LIST OF REFERENCE DOCUMENTS

Interface Control Document
Drawings:
Assembly, Mobile Data Radio 3385700- 1 000

Cable Assembly:

Diagnostic, MDR 385700-1805
Power Out, MDR 385700-1806
Power In, MDR 385700-1807
Data, MDR 385700-1808
RCS to Diagnostic, MDR 385700-1811
RCS to RS232, MDR 385700-1812

RCS to SCP, MDR 385700-1813
Assembly, Base Data Radio 385700-3000
Cable Assembly:

Diagnostic, BDR 385700-3805

Power, BDR 385700-3806

Data, BDR 385700-3808

RCS to Diagnostic. BDR 385700-3811

RCS to SCP1, BDR 385700-3812

RCS to SCP2, BDR 385700-3813

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385700-1006-006 TABLE OF CONTENTS

TABLE OF CONTENTS

CHAPTER 1............................................................................................................................................ 1-1

1.1 GENERAL MANUAL INFORMATION........................................................................................ 1-1

1.2 PREPARATION FOR STORAGE OR SHIPMENT.................................................................... 1-1

1.2.1Storage.............................................................................................................................. 1-1

1.2.2Shipment........................................................................................................................... 1-1

1.3 DESCRIPTION OF EQUIPMENT.............................................................................................. 1-2

1.3.1Type of Equipment............................................................................................................ 1-2

1.3.2Purpose of the Equipment................................................................................................. 1-2

1.4 LOCATIONS AND DESCRIPTIONS OF MAJOR COMPONENTS...........................................1-2

1.4.1Mobile Data Radio Assembly ............................................................................................ 1-4

1.4.2Base Station Radio Assembly........................................................................................... 1-4

1.5 EQUIPMENT CHARACTERISTICS........................................................................................... 1-5

1.5.1Power and Utility Requirements........................................................................................ 1-5

1.5.2Environmental Information ................................................................................................1-5

CHAPTER 2............................................................................................................................................ 2-8

2.1 INSTALLING THE RADIO EQUIPMENT................................................................................... 2-8

2.1.1Unpacking and Inspection.................................................................................................2-8

2.1.2Proper Installation of Units ................................................................................................ 2-8

2.2 INTERCONNECTIONS.............................................................................................................. 2-8

2.2.1Mobile Configuration Interconnection................................................................................ 2-9

2.2.2Wayside Configuration Interconnection ............................................................................ 2-9

2.3 CABLE AND GROUND REQUIREMENTS.............................................................................. 2-10

2.3.1Connector Pin-outs.......................................................................................................... 2-12

2.4 COMPONENT JACK LOCATIONS ......................................................................................... 2-17

2.4.1Mobile Data Radio Jack Locations.................................................................................. 2-17

2.4.2Base Station Data Radio Jack Locations........................................................................ 2-18

2.5 INITIAL PREPARATION FOR USE......................................................................................... 2-20

2.5.1Setting up Communications with the LCP Terminal Port................................................ 2-20

2.5.2Diagnostic/LCP Terminals............................................................................................... 2-21

2.5.3Vehicle LCP Menu...........................................................................................................2-23

2.5.4MDR Initial Operational Adjustments ..............................................................................2-23

2.5.5Wayside LCP Menu......................................................................................................... 2-26

2.5.6BDR Initial Operational Adjustments............................................................................... 2-26

2.6 RADIO APPLICATION CODE UPGRADE............................................................................... 2-27

2.7 PN SPREADING CODE SELECTION..................................................................................... 2-29

2.8 ANTENNA AND CABLE INSTALLATION................................................................................ 2-30

CHAPTER 3............................................................................................................................................ 3-1

3.1 CONTROLS AND INDICATORS............................................................................................... 3-1

3.1.1MDR Controls and Indicators............................................................................................ 3-1

3.1.2BDR Controls and Indicators............................................................................................. 3-1

3.2 STARTUP AND SHUTDOWN PRODECURES......................................................................... 3-4

3.2.1MDR Startup...................................................................................................................... 3-4

3.2.2BDR Startup...................................................................................................................... 3-4

3.2.3Normal Operation.............................................................................................................. 3-4

3.2.4Shutdown .......................................................................................................................... 3-4

3.3 OUTPUT POWER SETTINGS .................................................................................................. 3-7

3.4 ANTENNA PLACEMENT........................................................................................................... 3-7

CHAPTER 4............................................................................................................................................ 4-1

4.1 FUNCTIONAL DESCRIPTION OF EQUIPMENT...................................................................... 4-1

4.1.1Mobile Data Radio and Base Data Radio.......................................................................... 4-1

4.1.2Radio Network Architecture............................................................................................... 4-2

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385700-1006-006 TABLE OF CONTENTS

4.1.3MDR/BDR Communications Handling .............................................................................. 4-5

4.1.4PN SPREADING CODES ................................................................................................. 4-5

4.1.5ANTENNA SWITCHING CONTROLS.............................................................................. 4-6

CHAPTER 5............................................................................................................................................ 5-1

5.1 PREVENTIVE MAINTENANCE, INSPECTION, AND CLEANING............................................ 5-1

5.2 TROUBLESHOOTING............................................................................................................... 5-1

5.3 CORRECTIVE MAINTENANCE ................................................................................................ 5-5

5.3.1Remove and Replace MDR............................................................................................... 5-5

5.3.2Remove and Replace BDR............................................................................................... 5-6

5.4 TEST PROCEDURES ............................................................................................................... 5-8

5.4.1MDR Power Verification.................................................................................................... 5-8

5.4.2BDR Power Verification.....................................................................................................5-8

5.5 MDR TESTS .............................................................................................................................. 5-9

5.5.1MDR Transmitter Test Setup ............................................................................................ 5-9

5.5.2MDR Transmitter Fault Isolation Test ............................................................................. 5-10

5.5.3MDR Only Receiver Fault Isolation Test Setup............................................................... 5-10

5.5.4MDR Only Receiver Fault Isolation Test......................................................................... 5-11

5.5.5MDR/BDR Receiver Test Setup...................................................................................... 5-11

5.6 BDR TESTS............................................................................................................................. 5-13

5.6.1BDR Transmitter Setup................................................................................................... 5-13

5.6.2BDR Transmitter Fault Isolation Test.............................................................................. 5-13

5.6.3BDR Only Receiver Fault Isolation Test Setup ...............................................................5-14

5.6.4BDR Only Receiver Fault Isolation Test.......................................................................... 5-14

5.6.5BDR/MDR Receiver Test Setup...................................................................................... 5-15

5.7 RADIO DATA PORT TO USER SUPPLIED EQUIPMENT INTERFACE................................ 5-16

5.7.1EIA-530 Data Port Test Setup......................................................................................... 5-16

5.7.2EIA 530 Data Port Test ................................................................................................... 5-16

5.7.3RS-232 Data 2 Port Setup............................................................................................... 5-17

5.7.4RS-232 Data 2 Port Test.................................................................................................5-17

CHAPTER 6............................................................................................................................................ 6-1

6.1 PARTS LIST .............................................................................................................................. 6-1

CHAPTER 7............................................................................................................................................ 7-1

7.1 BASE DATA RADIO MECHANICAL OUTLINE ......................................................................... 7-1

CHAPTER 8............................................................................................................................................ 8-1

8.1 DIAGNOSTIC MENU................................................................................................................. 8-1

8.2 MDR DIAGNOSTIC LCP MENU................................................................................................ 8-3

8.3 LCP COMMANDS...................................................................................................................... 8-3

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385700-1006-006 TABLE OF CONTENTS

LIST OF FIGURES

Figure 1-1 Mobile and Base Radio Assemblies and Components.........................................1-3

Figure 2-1 MDR/BDR Interconnect Diagram.......................................................................2-11

Figure 2-2 MDR Input DC Power Pin-outs..........................................................................2-12

Figure 2-3 MDR Diagnostic Port LCP Terminal Port Pin-outs.............................................2-13

Figure 2-4 MDR Data 2 Port Pin-outs .................................................................................2-13

Figure 2-5 MDR Data 1 Port Pin-outs .................................................................................2-14

Figure 2-6 BDR Diagnostic Port Pin-outs............................................................................2-15

Figure 2-7 BDR Data 1 Port Cable Pin-outs........................................................................2-16

Figure 2-8 BDR Data 2 Port Cable Pin-outs........................................................................2-17

Figure 2-9 Mobile Data Radio Assembly Jack Locations.....................................................2-18

Figure 2-10 Base Station Data Radio Assembly Jack Locations.........................................2-19

Figure 3-1 Mobile Data Radio Controls and Indicators .........................................................3-2

Figure 3-2 Base Station Data Radio Assembly Controls and Indicators...............................3-3

Figure 3-3 BDR Output Spectrum........................................................................................3-5

Figure 3-4 MDR Output Spectrum........................................................................................3-6

Figure 4-1 Radio Network OSI Layers .................................................................................4-2

Figure 4-2 Radio Network Architecture................................................................................4-3

Figure 4-3 SCP to RCS Frame Format................................................................................4-4

Figure 5-1 MDR Fault Isolation Flow Diagram......................................................................5-2

Figure 5-2 BDR Fault Isolation Flow Diagram......................................................................5-3

Figure 5-3 Remove and Replace MDR ................................................................................5-6

Figure 5-4 Remove and Replace BDR.................................................................................5-7

Figure 5-5 MDR Transmitter Fault Isolation Test Setup.......................................................5-9

Figure 5-6 MDR Receiver Fault Isolation Test Setup.........................................................5-11

Figure 5-7 MDR Receiver Test Setup................................................................................5-12

Figure 5-8 BDR Transmitter Fault Isolation Test Setup......................................................5-13

Figure 5-9 BDR Receiver Fault Isolation Test Setup ..........................................................5-14

Figure 5-10 BDR Receiver Test Setup...............................................................................5-16

Figure 7-1 BDR Rack Mount Mechanical Outline.................................................................7-1

Figure 7-2 BDR Wall Mount Mechanical Outline..................................................................7-2

Figure 7-3 Mobile Data Radio Mechanical Outline...............................................................7-3

Figure 8-1 BDR LCP Menu...................................................................................................8-2

Figure 8-2 MDR LCP Menu...................................................................................................8-3

LIST OF TABLES

Table 1-1 MDR/BDR Types and Applications........................................................................1-2

Table 1-2 Mobile Data Radio Assembly Specifications.........................................................1-6

Table 1-3 Base Station Radio Assembly Specifications........................................................1-7

Table 2-1, BDR Data Port Enable Signals...........................................................................2-16

Table 3-1 – Antenna Gain versus Maximum Output Power...................................................3-7

Table 5-1 Preventive Maintenance Inspection and Cleaning.................................................5-1

Table 5-2 Radio Assembly Fault Isolation.............................................................................5-4

Table 5-3 Test Equipment....................................................................................................5-8

Table 6-1 Vendors ...............................................................................................................6-1

Table 6-2 Parts List..............................................................................................................6-2

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385700-1006-006 TABLE OF CONTENTS

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385700-1006-006 INSTALLATION

CHAPTER 1

INTRODUCTION

1.1 GENERAL MANUAL INFORMATION

This manual contains instructions for the operation, maintenance, and support of the mobile
data radio (MDR) assembly and the base station radio (BDR) assembly. This manual
describes each entity of the radio assemblies in detail. It provides the necessary informat ion
for qualified technical personnel to install, repair, and m aintain the MDR and BDR assemblies
to the line replaceable unit (LRU).

This manual is divided into six chapters, which consist of sections to describe the information
or procedures in detail. The six chapters are as follows:

• Chapter 1 outlines the contents of this manual and provides a basic equipment
description of the MDR and BDR.

• Chapter 2 provides preparation for use and installation information.

• Chapter 3 provides operating procedures for the equipment.

• Chapter 4 provides the principles of oper at ion.

• Chapter 5 provides preventive and corrective maintenance of t he r adio assem blies.

• Chapter 6 contains a vendor list and parts list for procurement of replacement

parts.

• Chapter 7 contains mechanical outlines of the data radios.

1.2 PREPARATION FOR STORAGE OR SHIPMENT

The following paragraphs describe guidelines for long term stor age and the shipment of the
equipment.

1.2.1 STORAGE

Before storage, wrap the equipment in static shielding bubble wrap. Bubble wrap protects
internal electrostatic discharge sensit ive (ESDS) assemblies, external panels, and connect ors.
Place wrapped equipment in the original shipping containers and seal. Store in a cool dry
place, away from the elements.

1.2.2 SHIPMENT

Ship equipment in the original shipping containers or in a container that provides sufficient
protection for ESDS equipment. Pack the equipm ent in a manner that provides protection for
all external switches and mountings, because these items are most vulnerable to damage
during shipment.

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385700-1006-006 INSTALLATION

1.3 DESCRIPTION OF EQUIPMENT

The Radio Communications Network consists of Base and Mobile Radio Communication
Systems (RCS). The Base RCS includes Base Data Radios (BDR) connected to wayside
Control Equipment. The Mobile RCS includes Mobile Data Radios connected to Control
Equipment on board the vehicle. The Radio Communications Systems provide bi-directional
communications. The systems operate in a combined Time Division Multiple Access (TDMA)
and Code Division Multiple Access (CDMA) environment.

The Mobile Data Radio (MDR) and Base Data Radios (BDR) in the technical manual are
Spread Spectrum non-licensed RF transceivers.

1.3.1 TYPE OF EQUIPMENT

The MDR and BDR are non-licensed spread spectrum transceivers that operate in the ISM
2400-2483.5 MHz frequency band. Antennas connected to MDR and BDR may come from
different vendors. Antennas should support the 2400-2483 MHz frequency band, be
compliant with FCC part 15 regulations, and are to be inst alled by professional parties.

Refer to Table 1-1 MDR/BDR Types and Applications. The following table contains part
numbers for different versions of MDR and BDR.

Part No.

385700-1000-001 MDR Input Voltage 18-32 VDC
385700-1000-002 MDR Input Voltage 21-56 VDC

385700-3000-001 BDR Rack Mounted
385700-3000-002 BDR Wall Mounted
385700-3000-003 BDR Pole Mounted

Table 1-1 MDR/BDR Types and Applications

Type Application

1.3.2 PURPOSE OF THE EQUIPMENT

The radio provides a bi-directional communication link bet ween the wayside and the vehicle
control equipment. The wayside control equipment generates data and sends it t o the BDR.
The BDR transmits data over the radio channel to the appropriate MDR. The MDR
communicates with the vehicle control equipment, obtains the response, and transmits it to
the BDR via the RF link.

1.4 LOCATIONS AND DESCRIPTIONS OF MAJOR COMPONENTS

Refer to Figure 1-1 Mobile and Base Radio Assemblies and Components. The following
paragraphs contain the complete descriptions and locations of the mobile dat a radio and base
data radio.

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385700-1006-006 INSTALLATION

Mobile Data Radio

Base Data Radio

Figure 1-1 Mobile and Base Radio Assemblies and Components

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385700-1006-006 INSTALLATION

1.4.1 MOBILE DATA RADIO ASSEMBLY

The mobile data radio (MDR) uses direct sequence spread spectrum modulat ion techniques.
The MDR transmits at a center freq uency of 2467.84 MHz. and receives at a center f r equency
of 2416.64 MHz.

The MDR communicates with the vehicle control equipment across an EIA 530 (RS-422)
interface at J2. The MDR can also send messages to external equipment via an RS-232
interface at J3. An operator can also communicate with the MDR t hrough the diag nostic port
across an RS-232 interface (refer to paragraph 2.5. 2) at J4. This int erf ace is r ef err ed to as the
Local Command Processor (LCP) terminal and is used to load user supplied paramet ers into
the radio’s non-volatile memory when the radio is initially delivered to the customer. This RS­232 interface is not used during nor m al oper ation of the radio. The MDR receives power from
a nominal 28 VDC (or a nominal 36 VDC depending on application), power source at J1.
Refer to Table 1-2 Mobile Data Radio Assembly Specif icat ions.

1.4.2 BASE STATION RADIO ASSEMBLY

The base data radio (BDR), like the MDR, is a spread spectrum transceiver. The BDR
transmits at a center fr equency of 2416. 64 MHz frequency and receives at a center f req uency
of 2457.84 MHz band. Refer to Table 1-3 Base Stat ion Radio Assembly Specifications. The
BDR communicates across an EIA 530 (RS-422) inter face to the wayside control equipm ent
at J2 or J3 (see Figure 2-10). An oper ator can also communicate with the BDR through the
diagnostic port, J4, across an RS-232 interface (refer to paragraph 2.5.2). This interface is
referred to as the Local Command Processor (LCP) ter minal and is used to load user supplied
parameters into the radio’s non-volatile memory when the radio is initially delivered to the
customer. This RS-232 interf ace is not used during normal operation of the radio. The BDR
receives its AC input power at J1. Tables 1-2 through 1- 3 contain the specifications for the
MDR and BDR. The tables include characteristics and specifications in three categories:
technical, environmental, and physical.

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Figure 1-2 Transmitter Block Diagram

385700-1006-006 INSTALLATION

1.5 EQUIPMENT CHARACTERISTICS

1.5.1 POWER AND UTILITY REQUIREMENTS

The MDR requires a nominal 28 VDC (or a nominal 36 VDC depending on application) power
source to operate. Refer to Table 1-2 Mobile Data Radio Assembly Specifications fo r more
detailed information. T he BDR requires nominally 120 VAC to operate. Refer to Table 1-3
Base Station Radio Assembly Specifications, f or more detailed information.

1.5.2 ENVIRONMENTAL INFORMATION

The MDR assembly can withstand the shock and vibration associated with mobile
environments. It is contained in a weatherproof enclosure. Refer to T able 1-2 Mobile Data
Radio Assembly Specifications, for m or e det ailed information.

The BDR assembly is designed for an environment away from t he elements. It can be rack­mounted, or wall mounted. Refer t o Table 1-3 Base Station Radio Assembly Specifications,
for more detailed information. There are pr ovisions for t he BDR assembly to be delivered in a
pole-mounted configurat ion. Its environmental characteristics will be similar to MDR.

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385700-1006-006 INSTALLATION

Transmitter

Transmitter Center Freq uency 2467.84 MHz
Output Power (+24 dBm linear) – adjustable
Transmitter Duty Cycle Up to 100% continuous operation
Modulation Gaussian Phase Shift Keying

Receiver

Receiver Center Frequency 2416.64 MHz
Receiver Input Impedance 50 ohms
Receiver Noise Figure
Maximum Input 0 dBm
BER in AWGN

≤7 dB
≤ 1 * 10E-05 for a –90 dBm input

Power Supply

Inputs People Mover: 18-32 VDC

Mass Transit: 21-56 VDC
Power Consumption <50 watts
Transient Protection Yes
Reverse Polarity protection Yes

Environment

Operating Temperature -40 °C to +70°C
Storage Temperature -50°C to +85°C
Operating Humidity 10 to 95%
Storage Humidity 10 to 95%
Shock 3 g’s peak, 7-10 ms
Vibration 0.4 g’s peak, 5-100 Hz

Physical

Size 16.5” (l) x 13.0” (w) x 5.5” (h)
Weight <50 pounds
Enclosure Weatherproof

Regulatory

FCC Part 15 Compliant

Table 1-2 Mobile Data Radio Assembly Specifications

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385700-1006-006 INSTALLATION

Transmitter

Transmitter Center Freq uency 2416.64 MHz
Output Power (+24 dBm linear) – adjustable
Transmitter Duty Cycle Up to 100% continuous operation
Modulation Gaussian Phase Shift Keying

Receiver

Receiver Center Frequency 2467.84 MHz
Receiver Input Impedance 50 ohms
Receiver Noise Figure
Maximum Input 0 dBm
BER in AWGN

≤ 7 dB

≤1 * 10E-05 for a –90 dBm input

Power Supply

Inputs 87 to 265 VAC, 47-63 Hz
Power Consumption <50 watts
Transient Protection Yes
Reverse Polarity protection NA

Environment

Operating Temperature -25°C to +70°C rack mounted

-40°C to +70°C pole mounted
Storage Temperature -50°C to +85°C
Operating Humidity 10 to 95%
Storage Humidity 10 to 95%
Shock NA
Vibration 0.4 g’s peak, 5-100 Hz

Physical

Size 15.0” (l) x 19” (w) x 5.22” (h) (indoor)

16.5” (l) x 13.0” (w) x 5.5” (h)
Weight <50 pounds
Enclosure Weatherproof (outdoor)

Standard 19” rack mount (indoor)

Regulatory

FCC Part 15 Compliant

Table 1-3 Base Station Radio Assembly Specifications

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385700-1006-006 INSTALLATION

CHAPTER 2

INSTALLATION

2.1 INSTALLING THE RADIO EQUIPMENT

This chapter provides informat ion to install the base and mobile data radios (MDR and BDR)
and related equipment and to prepare t he equipment for use.

2.1.1 UNPACKING AND INSPECTION

Unpacking the mobile and base station data radios does not require special procedur es. Use
normal shop procedures to unpack the equipm ent.

Carefully inspect the shipping containers and equipment. If the containers show damage,
inspect the equipment in those containers with extra care. Do not open containers with
extreme damage.

Check equipment for bent frames, protrusions, and dents. Pay close attention to external
brackets, controls and connectors, because they are especially susceptible to damage during
shipment.

If you find damage to t he equipment, notify Andrew Corporation’s at

• 1-800-854-7732 (Inside the USA)

• 972-235-1222 (Outside the USA)

2.1.2 PROPER INSTALLATION OF UNITS

The MDR is designed to be attached to a mounting plate or bracket using standard 3/8”
hardware. Connect the MDR to the appropriate DC power source and ant enna. The operat or
is responsible for insuring that the selected antennas and radio are operated in compliance
with FCC Part 15 regulations.

The typical BDR is installed in standard 19” equipment racks. It can also be mounted on a
wall in a stand-alone configuration. Opt ionally, the BDR can be configured to be mounted on
poles, similar to a MDR.

2.2 INTERCONNECTIONS

Refer to Figure 2-1 MDR/BDR Int erconnect Diagram, for a block diag ram of wiring runs and
connector designations. The following paragraphs describe the interconnections directly
related to the mobile data and base station radios.

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385700-1006-006 INSTALLATION

WARNING

The antenna is an electrical conductor.
Contact with power lines may cause
death or serious injury. Do not install
these antennas where there is any
possibility of contact with or high
voltage arc-over from power cables or
service drops to buildings. The
antennas and mast must not be near
power lines during instal lation, use, or
removal.

WARNING

Before applying power, verify that the
antenna is securely connected to the MDR
and BDR. Failure to observe these
warnings will damage the equipment.

2.2.1 MOBILE CONFIGURATION INTERCONNECTION

Refer to the mobile configuration diagram in Figure 2-1 MDR/BDR Interconnect Diagram.
Connect the vehicle control equipment to the MDR at the
of the unit. Connect the appropr iat e DC power source t o t he front panel
Connect an antenna to
during normal operation. It is used for testing purposes. (Ref er to paragraph 2.5. 2.) .

2

(J3) port may or may not be used in a particular implem entation. It s operation is defined in

the ICD.

ANTENNA

(J5) port. The

2.2.2 WAYSIDE CONFIGURATION INTERCONNECTION

Refer to the wayside configuration diagram in Figure 2-1 MDR/BDR Interconnect Diagram.
The BDR rear panel port
base station radios connect directly to the wayside control equipment. The BDR r ear panel

DATA 1

port

2

(J3) connects to the redundant set of wayside control equipment. The active control

equipment will provide a differential signal to enable either

(J2) connects to the wayside control equipment. The BDR rear panel port

ANTENNA

(J5) connects to the wayside antenna subsystem. The

DATA 1

DIAGNOSTIC

DATA 1

(J2) port on the f ront panel

POWER IN

port (J4) is not connected

DATA 2

or

(J1) port.

DATA

DATA

port. This

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385700-1006-006 INSTALLATION

signal will be provided via a pair of dry contacts. The BDR provides the source voltage of
nominally +5 VDC and the return path to drive the sig nals. Refer to BDR Data 1 Port Cable
Pin-outs, for EIA-530 pin assignments. The diagnostic port (J4) is not connected during
normal operation. It is used f or t esting purposes. (Refer to par agraph 2.5.2.)

2.3 CABLE AND GROUND REQUIREMENTS

The following paragraphs contain the requirements for constructing the interconnect cabling
between the Andrew and vendor supplied equipment.

Construct the MDR power cables, using at least 16-gauge cable. Use the power cable to
ground the MDR.

Use RF coaxial cable to connect the antennas. The cabling must suppor t potential bends in
the path from the mobile antennas t o the radios. Loss throug h this cable must be less than 2
dB.

Construct data and computer signal cabling using 22 AWG shielded cabling. The BDR power
cable is a standard AC power cable using an IEC320 type plug.

All cables shall be shielded for EMI reduction.

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385700-1006-006 INSTALLATION

y

MOBILE CONFIGURATION

2467.84 MHz

Terminal

Vehicle

Control Equipment

DC Power

WAYSIDE CONFIGURAT ION

Redundant Wayside

Control Equipment

Wayside

Control Equipment

AC Power

Data

Data

Data

J3

DATA 2

J2

DATA 1

MOBILE DATA RADIO

J1

POWER IN

DIAGNOSTIC

J3

DATA 2

J2

DATA 1

BASE DATA RADIO

J1

POWER IN

DIAGNOSTIC

J5

ANTENNA

J4

J5

ANTENNA

J4

2416.64 MHz

2416.64 MHz

2467.84 MHz

LCP Terminal

Wayside

Antenna

stem

S

LCP

Terminal

Figure 2-1 MDR/BDR Interconnect Diagram

Document use is restricted to that described on cover 2-11

385700-1006-006 INSTALLATION

2.3.1 CONNECTOR PIN-OUTS

Refer to Figures 2-2 through Figure 2-8 f or the connector pin-out inf ormat ion for t he MDR and
BDR ports. Unlisted pins are no connects or reserved. Refer to attached cable assembly
drawing package for t ypical external cable details.

Figure 2-2 shows the connector for the MDR fr ont

C

A

Pin Assignment Signal
PIN A DC(+)
PIN B Gr o und
PIN C Ground

B

POWER IN

connector.

Power IN

The

connector is a MIL-C_26482, Series 1 connector. The part number is

MS3114E8-3P or equivalent. The mating connector is MS3116F8-3S or eq uivalent.

Figure 2-2 MDR Input DC Pow er Pi n-outs

Document use is restricted to that described on cover 2-12

385700-1006-006 INSTALLATION

Figure 2-3 shows the connector for the MDR f r ont panel

DIAGNOSTIC

port.

Note: Other pin assignments corr espond to signals used for t esting purposes beyond the
scope of this manual.

A

B

C

D

E

F

V

W

X

Y

G

H

T

S

U

e

g

f

jw

a

Z

K

J

R

P

d

N

c

M

b

L

Pin Assignment Signal
PIN e DIAG_TXD
PIN f DIAG_RXD
PIN g TERM_GND

Figure 2-3 MDR Diagnostic Port LCP Terminal Port Pin- out s

The Diagnostic connector is a MIL-C-26482, Series 1 connector . The part number is
MS3124E18-32S. The mating connector is MS3126F18-32P or equivalent.

Figure 2-4 shows the connector for the MDR f r ont panel

DATA 2

port.

Pin Assignment Signal
PIN A T XD
PIN B RX D

A

B

C

E

P
R

S

FG

D

M

N

L

UV

T

H

K

J

PIN C SIG GND
PIN E ANT 0
PIN F ANT1
PIN G ANT2
PIN L SIGA GND
PIN M SIGA GND
PIN N SIGA GND
PIN S RADIO PWR
PIN T RADIO PWR
PIN U RADIO PW R RTN
PIN V RADIO PWR RTN

Figure 2-4 MDR Data 2 Port Pin-outs

The Data 2 connector is a MIL-C-26482, Series 1 connector. The part number is
MS3124E14-19SY. The mating connector is MS3126F14-19PY or equivalent.

Document use is restricted to that described on cover 2-13

385700-1006-006 INSTALLATION

Figure 2-5 shows the connector for the MDR f r ont panel

Pin Assignment Signal
PIN A T XD(A)
PIN B T XD(B)

A

B

C

E

P
R

S

FG

D

M

N

L

K

UV

J

T

H

PIN C RXD(A)
PIN D RXD(B)
PIN E T XCLK(A)
PIN F TXCLK(B)
PIN G RXCLK(A)
PIN H RXCLK(B)
PIN J RTS(A)
PIN K RT S(B)
PIN L CTS(A) - not used
PIN M CTS(B) – not used
PIN N CD(A)
PIN P CD(B)
PIN R GND

Figure 2-5 MDR Data 1 Port Pin-outs

DATA 1

port.

The Data 1 connector is a MIL-C-26482, Series 1 connector. The part number is
MS3124E14-19S. The mating connector is MS126F14-19P or equivalent.

The Data 1 and Data 2 connectors are uniquely polarized.

Document use is restricted to that described on cover 2-14

385700-1006-006 INSTALLATION

Figure 2-6 shows the connector of t he BDR r ear panel

DIAGNOSTIC

port. The connector is a
37 pin D-sub. The part number is CINCH 962G E DCU- 37S or eq uivalent. A mat ing connecto r
with a metal backshell for shielding pur poses should be used.

PIN 1

PIN 2

Pin Assignment Signal
PIN 28 DIAG_TXD
PIN 29 DIAG_RXD

PIN 37 PIN 20

PIN 30 TERM_GND

J4

DIAGNOSTIC

Note: Other pin assignments corr espond to signals used for t esting purposes beyond the
scope of this manual.

Figure 2-6 BDR Diagnostic Port Pin-outs

Document use is restricted to that described on cover 2-15

385700-1006-006 INSTALLATION

Figure 2-7 shows the connector of the BDR rear panel

DATA 1

port (J2). The connector is a
25 pin D-sub. The part number is IT T DBU-25S- FO or eq uivalent. A mating connector with
a metal backshell for shielding purposes should be used.

Pin Assignment Signal
PIN 1 Shield
PIN 2 TXD(A)
PIN 14 TXD(B)
PIN 3 RXD(A)

Pin 1

Pin 2

PIN 16 RXD(B)
PIN 15 TXCLK(A)
PIN 12 TXCLK(B)
PIN 17 RXCLK(A)
PIN 9 RXCLK(B)
PIN 4 RTS(A) – not used

J2

DATA 1

PIN 14

PIN 19 RTS(B) – not used
PIN 5 CTS(A) – not used
PIN 13 CTS(B) – not used
PIN 7 GND
PIN 6 CNTL_OUT+
PIN 22 CNTL_OUT­PIN 20 CNTL_IN+
PIN 23 CNTL_IN-

Figure 2-7 BDR Data 1 Port Cable Pin-outs

The signals on pins 6, 22, 20 and 23 are provided to enable eit her

DATA 1

or

DATA 2

port.

Table 2-1 shows the selection of the BDR data port based on t hese signals.

Control

Equipment

Inputs
CNTL_OUT+
CNTL_OUT­CNTL_OUT+
CNTL_OUT­CNTL_OUT+
CNTL_OUT-

VDC

(Nominal)

5
0
5
0
5
0

Control

Equipment

Outputs
CNTL_IN+
CNTL_IN­CNTL_IN+
CNTL_IN­CNTL_IN+
CNTL_IN-

VDC

(Nominal)

5
0
0

5
NC
NC

Active

Data Port

DATA 2
DATA 1
DATA 2

Table 2-1, BDR Data Port Enable Signals

Refer to “ATCS Radio Network Interface Control Document” for complete BDR to wayside
equipment interface information.

Document use is restricted to that described on cover 2-16