Siemens A53685 Guide

PRINTED IN U.S.A.
INSTALLATION & OPERATION
A53685 AIRLINK MARS
SOFTWARE DEFINED RADIO (SDR)
OCTOBER 2021
DOCUMENT NO. COM-00-21-05
VERSION A
Siemens Mobility, Inc.
One Penn Plaza
Suite 1100
New York, NY 10119-1101
1-800-793-SAFE
www.usa.siemens.com/rail-manuals
Copyright © 2021 Siemens Mobility, Inc.
All Rights Reserved

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Version No.: A
PROPRIETARY INFORMATION
The material contained herein constitutes proprietary and confidential information and is the
intellectual property of Siemens Mobility, Inc. (Siemens) protected under United States
patent, copyright, and/or other laws and international treaty provisions. This information and
the software it describes are for authorized use only, and may not be: (i) modified, translated,
reverse engineered, decompiled, disassembled, or used to create derivative works; (ii)
copied or reproduced for any reason other than specific application needs; or (iii) rented,
leased, lent, sublicensed, distributed, remarketed, or in any way transferred; without the prior
written authorization of Siemens. This proprietary notice and any other associated labels may
not be removed.
TRANSLATIONS
The manuals and product information of Siemens Mobility, Inc. are intended to be produced
and read in English. Any translation of the manuals and product information is unofficial and
can be imprecise and inaccurate in whole or in part. Siemens Mobility, Inc. does not warrant
the accuracy, reliability, or timeliness of any information contained in any translation of
manual or product information from its original official released version in English and shall
not be liable for any losses caused by such reliance on the accuracy, reliability, or timeliness
of such information. Any person or entity that relies on translated information does so at his
or her own risk.
WARRANTY INFORMATION
Siemens Mobility, Inc. warranty policy is as stated in the current Terms and Conditions of
Sale document. Warranty adjustments will not be allowed for products or components which
have been subjected to abuse, alteration, improper handling or installation, or which have not
been operated in accordance with Seller's instructions. Alteration or removal of any serial
number or identification mark voids the warranty.
SALES AND SERVICE LOCATIONS
Technical assistance and sales information on Siemens Mobility, Inc. products may be obtained
at the following locations:
SIEMENS MOBILITY, INC.
SIEMENS MOBILITY, INC.
2400 NELSON MILLER PARKWAY
939 S. MAIN STREET
LOUISVILLE, KENTUCKY 40223
MARION, KENTUCKY 42064
TELEPHONE: [phone] TELEPHONE: [phone]
FAX:
[phone]
CUSTOMER SERVICE:
[phone]
SALES & SERVICE: [phone] TECHNICAL SUPPORT: [phone]
WEB SITE: www.usa.siemens.com/rail-manuals FAX: [phone]

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Version No.: A
FCC RULES COMPLIANCE
The equipment covered in this manual has been tested and found to comply with the
limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
•Consult Siemens Customer Service for help.
Modifications not expressly approved by the manufacturer could void the user's authority
to operate the equipment under FCC rules.
RF EXPOSURE WARNING
This equipment complies with the FCC RF radiation exposure limits set forth for an uncontrolled
environment. This transmitter must follow the specific operating instructions for satisfying RF
exposure compliance. This transmitter must be at least 8 inches (20 cm) from the user and must
not be co-located or operating in conjunction with any other antenna or transmitter.
All antenna installation and servicing are to be performed by qualified technical personnel only.
When servicing or working at distances closer than 7 feet (2 meters), ensure the transmitter has
been disabled. Depending upon the application and the gain of the antenna, the total composite
power could exceed 100 watts EIRP. The antenna location should be such that only qualified
technical personnel can access it, and under normal operating conditions no other person can
come in contact or approach within 7 feet (2 meters) of the antenna.

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HUMAN EXPOSURE STATEMENT
This equipment is designed to generate and radiate radio frequency (RF) energy using an
external antenna.
When terminated into a non-radiating RF load, the radio is certified to comply with FCC
regulations pertaining to human exposure to RF radiation in accordance with the FCC
Rules Part 1 section 1.1310 as published in title 47 code of federal regulations and
procedures established in TIA/EIA TSB92, Report On EME Evaluation for RF
Cabinet Emissions Under FCC MPE Guidelines. Compliance with FCC regulations of the
final installation should be assessed and take into account site-specific characteristics such
as type and location of antennas, as well as site accessibility of occupational personnel
(controlled environment) and the general public (uncontrolled environment). This equipment
should only be installed and maintained by trained technicians. Whether a given installation
meets FCC limits for human exposure to radio frequency radiation may depend not only on
this equipment but also on whether the environments being assessed are being affected by
radio frequency fields from other equipment, which may add to the level of exposure.
Accordingly, the overall exposure may be affected by radio frequency generating facilities
that exist at the time the licensee’s equipment is being installed or even by equipment
installed later. The effects of any such facilities must be considered in site selection and in
determining whether a particular installation meets the FCC requirements.
FCC OET Bulletin 65 provides materials to assist in making determinations if a given facility
is compliant with the human exposure to RF radiation limits. Determining the compliance of
transmitter sites of various complexities may be accomplished through computational
methods. For more complex sites, direct measurement of the power density may be more
expedient. Personnel responsible for installing this equipment are urged to consult the listed
reference material to assist in determining whether a given installation complies with the
applicable limits.

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Version No.: A
GENERAL SAFETY PRECAUTIONS
Safety precautions must be observed at all times during all phases of installation, operation,
service, and repair of the equipment described in this manual. The following precautions are
warnings to be aware of. These warnings and precautions are necessary for the safe
operation of the equipment.
•All applicable safety procedures, including the National Electrical
Code (NEC), Occupational, Safety, and Health Administration (OSHA),
and local code requirements must be observed by personnel.
•Follow all warning notices and instructions marked on the product or
included in this manual before installing, servicing, or operating the
equipment. Retain these safety instructions forfuture reference.
•Only a qualified technician familiar with electronic equipment should service
equipment.
•Do not perform any unauthorized modifications of equipment.
•When troubleshooting the equipment with electrical current present, be aware of
live circuits.
•All equipment must be properly grounded and protected from lightning for safe
operation.
•DO NOT operate the transmitter of any radio unless RF
connectors are secure, andall connectors are properly
terminated.
•Heat sinks on the radio are to dissipate heat and must not be blocked or
covered.
•Equipment can become hot during operation. Turn off all power to the
equipment and waituntil sufficiently cool before touching.
MANUAL SCOPE
This manual is intended for use by experienced technicians familiar with RF equipment. The
Airlink Mars radio is not intended to be field repairable. This manual is intended to provide
information for installation, configuration, and operation in addition to providing information for
troubleshooting to determine if the radio is faulty and needs to be replaced. The Airlink Mars
radio should not be opened or dismantled by the customer.
The information in this manual is current as of its publication date. Changes that occur after its
printing date are incorporated and noted in the Document History.

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Version No.: A
DOCUMENT HISTORY
Version Release
Date Sections Changed Details of Change
A 10/28/21 Initial Release

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Version No.: A
TABLE OF CONTENTS
Section Title Page
PROPRIETARY INFORMATION.............................................................................................................ii
TRANSLATIONS.....................................................................................................................................ii
WARRANTY INFORMATION ..................................................................................................................ii
SALES AND SERVICE LOCATIONS.......................................................................................................ii
FCC RULES COMPLIANCE....................................................................................................................iii
HUMAN EXPOSURE STATEMENT........................................................................................................iv
GENERAL SAFETY PRECAUTIONS ......................................................................................................v
MANUAL SCOPE....................................................................................................................................v
DOCUMENT HISTORY..........................................................................................................................vi
NOTES, CAUTIONS, AND WARNINGS.................................................................................................xii
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS.......................................................................xiii
GLOSSARY ..........................................................................................................................................xiv
1PRODUCT DESCRIPTION............................................................................................................1-1
1.1 Specifications.........................................................................................................................1-2
1.2 Ordering Information...............................................................................................................1-4
2INTRODUCTION...........................................................................................................................2-1
2.1 Summary of Operating Features.............................................................................................2-2
2.2 Mechanical Design.................................................................................................................2-3
2.3 Electrical Design.....................................................................................................................2-4
2.3.1 Power Supply Unit (PSU) ........................................................................................2-5
2.3.2 Communications Base Board (CBB)........................................................................2-5
2.3.3 Radio Frequency Module (RFM)..............................................................................2-5
2.3.4 Power Amplifier (PA)...............................................................................................2-6
2.3.5 Transmit Coupler.....................................................................................................2-6
2.3.6 Transmit-Receive Switch.........................................................................................2-6
2.3.7 Low-Pass Filter (LPF)..............................................................................................2-6
2.3.8 System Status Display (SSD)..................................................................................2-6
2.3.9 RF Antenna.............................................................................................................2-6
2.3.10 GPS Antenna..........................................................................................................2-7
2.4 Functional Theory of Operation...............................................................................................2-7
2.4.1 Filtering Architecture................................................................................................2-7
2.5 Security Architecture Authentication and Authorization............................................................2-9
2.5.1 Encryption.............................................................................................................2-10

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2.6 Detection and Monitoring......................................................................................................2-10
3INSTALLATION.............................................................................................................................3-1
3.1Installation Overview...............................................................................................................3-1
3.2 Environmental Considerations................................................................................................3-2
3.2.1 Equipment Ventilation..............................................................................................3-2
3.3 Site Grounding.......................................................................................................................3-2
3.4 Input Power Requirements .....................................................................................................3-2
3.5 Equipment Installation ............................................................................................................3-3
3.5.1 Equipment Unpacking and Inspection......................................................................3-3
3.5.2 Equipment Mounting................................................................................................3-3
3.5.3 Radio Grounding Guidelines....................................................................................3-3
3.5.4 Mechanical Installation............................................................................................3-3
3.5.4.1 Mounting Procedure................................................................................................3-3
3.6 Electrical Connection..............................................................................................................3-4
3.6.1 DC Power Supply Connection .................................................................................3-4
3.6.2 Antenna System Connections..................................................................................3-6
3.7 GPS Synchronization..............................................................................................................3-6
3.7.1 Overview.................................................................................................................3-6
3.7.2 GPS System............................................................................................................3-6
3.7.3 Internal GPS Module...............................................................................................3-6
3.7.4 GPS Antenna..........................................................................................................3-7
3.7.5 System Cable Connections......................................................................................3-8
3.7.6 Connection Summary..............................................................................................3-9
3.8 Post Installation Checklist.....................................................................................................3-10
3.8.1 Applying Power .....................................................................................................3-10
3.8.2 Verifying Proper Operation....................................................................................3-10
4TROUBLESHOOTING...................................................................................................................4-1
5CONFIGURATION ........................................................................................................................5-1
5.1 Description.............................................................................................................................5-1
5.2 Remote Access......................................................................................................................5-2
5.3 Serial Port Console Access ....................................................................................................5-2
5.4 Default Passwords and Change..............................................................................................5-3
5.5 Base Station Console Display.................................................................................................5-4
5.6 SSH Ethernet Access.............................................................................................................5-4
5.7 WinSCP .................................................................................................................................5-5
5.7.1 WinSCP Startup Dialog...........................................................................................5-5
5.7.2 BS50000 File Structure ...........................................................................................5-6

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5.7.3 WinSCP Actions......................................................................................................5-8
5.8 Base Station Configuration Files.............................................................................................5-9
5.9 Maintaining Multiple Configuration File Versions...................................................................5-10
5.10 Coordinated Configuration File Changes ...............................................................5-11
6OPERATION.................................................................................................................................6-1
6.1 Description.............................................................................................................................6-1
6.2 Base Station Operation...........................................................................................................6-1
6.2.1 Base Station CLI.....................................................................................................6-1
6.2.1.1 Basic CLI Use .........................................................................................................6-2
6.3 Remote Station (Cobalt) CLI Operation...................................................................................6-4
6.3.1 Remote Station CLI.................................................................................................6-5
6.3.1.1 Basic CLI Use .........................................................................................................6-5
6.4 Temporary Operational Non-Permanent Changes (No Reboot Required)................................6-8
7SOFTWARE UPDATES.................................................................................................................7-1

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LIST OF FIGURES
Section Title Page
Figure 1-1 A53685 Airlink Mars Radio.................................................................................................1-1
Figure 2-1 A53685 Airlink Mars System ..............................................................................................2-1
Figure 2-2 Airlink Mars Radio Dimensions...........................................................................................2-3
Figure 2-3 Airlink Mars Radio Block Diagram......................................................................................2-4
Figure 2-4 RF and IF SAW Filters.......................................................................................................2-8
Figure 3-1 Physical Dimensions..........................................................................................................3-3
Figure 3-2 Phoenix 1777989 DC Input Connector Wiring and Installation............................................3-4
Figure 3-3 DC Input Connector Wiring and Mounting ..........................................................................3-5
Figure 3-4 Power LED and Reset Button ............................................................................................3-5
Figure 3-5 Antenna Connections.........................................................................................................3-6
Figure 3-6 Trimble Bullet III GPS Antenna...........................................................................................3-7
Figure 3-7 Network Connectors ..........................................................................................................3-8
Figure 5-1 Console Port Cable (USB to RJ-45)...................................................................................5-2
Figure 5-2 Startup Dialog – User Name and Password .......................................................................5-5
Figure 5-3 Entering Password.............................................................................................................5-6
Figure 5-4 Main Session Window........................................................................................................5-6
Figure 5-5 Selecting a Higher Directory...............................................................................................5-7
Figure 5-6 Configuration File Example................................................................................................5-8
Figure 6-1 Base Station LCD Screen – Remote Station Connection....................................................6-1
Figure 6-2 Successful “admin” Login...................................................................................................6-2
Figure 6-3 CLI Commands..................................................................................................................6-2
Figure 6-4 View System Performance.................................................................................................6-2
Figure 6-5 Additional Options..............................................................................................................6-3
Figure 6-6 View Current System Performance ....................................................................................6-3
Figure 6-7 Show All BS Measurement Report.....................................................................................6-3
Figure 6-8 Remote Station Connection Process LCD Screens............................................................6-4
Figure 6-9 Remote Station Logon Screen...........................................................................................6-5
Figure 6-10 All Commands List...........................................................................................................6-5
Figure 6-11 View Connected Measurement Report.............................................................................6-6
Figure 6-12 Measurement Report Screen ...........................................................................................6-7