Selex Sistemi Integrati MKR2 User Manual

THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION AND SUCH

INFORMATION MAY NOT BE DISCLOSED TO OTHERS FOR ANY

PURPOSES WITHOUT WRITTEN PERMISSION FROM

SELEX Sistemi Integrati Inc.

Copyright © 2006, SELEX Sistemi Integrati Inc.

Operations and Maintenance Manual

Model 2130 Marker Beacon

572130-0001 Rev A April, 2005

SELEX Sistemi Integrati Inc.

11300 West 89th Street

Overland Park, KS U.S.A. 66214

THIS SHEET INTENTIONALLY BLANK

SAFETY SUMMARY

The following are general safety precautions that are unrelated to specific procedures and therefore do not appear
elsewhere in this publication. These are recommended precautions that personnel should understand and apply during
through the many phases of operation and maintenance.

ELECTROSTATIC SENSITIVE DEVICES PRECAUTIONS

Since most modules used in all models of equipment have Electrostatic Discharge (ESD) sensitive devices included in
them, all modules should be considered sensitive to electrostatic discharge. Handling in the field shall be the same as in
the factory. Each system is shipped with a wrist strap that must be worn while maintaining the equipment. The wrist
strap shall be fastened to the equipment chassis either in the designated plug-in or attached to the equipment chassis
with the alligator clip. The wrist strap must be used before any modules are removed from the equipment and at all times
while handling the modules until they are placed in a protective environment such as an anti-static bag. Modules or
boards must not be placed on any non-conducting surface such as wooden work benches, painted metal work benches,
plastics, or technical manuals. Any work surface to be used must have a conducting mat placed on it and attached to
earth ground. The mat and additional wrist straps can be obtained from SELEX Sistemi Integrati Inc.

KEEP AWAY FROM LIVE CIRCUITS

Operating personnel must at all times observe all safety regulations. Under no circumstances should any person remove
any protective covers that expose lethal voltages. Do not replace components or make adjustments inside the equipment
with primary power supply turned on. Under certain conditions, dangerous potentials may exist when the power is in the
off position, due to charges retained by capacitors. To avoid casualties, always remove power and allow time for the
capacitors to discharge before touching it.

DO NOT SERVICE OR ADJUST ALONE

Under no circumstances should any person reach into or enter the enclosure for the purpose of servicing or adjusting the
equipment except in the presence of someone who is capable of rendering aid.

RESUSCITATION

Personnel working with or near high voltages should be familiar with modern methods of resuscitation.

THIS SHEET INTENTIONALLY BLANK

SELEX Sistemi Integrati Inc.

This equipment is supplied by SELEX Sistemi Integrati Inc. For replacement parts and repair service, contact SELEX
Sistemi Integrati Inc. using the contact information provided below.

HOW TO ORDER REPLACEMENT PARTS

When ordering replacement parts, you should contact SELEX Sistemi Integrati Inc. by fax, phone or email. Please address
the following items (as applicable) in your correspondence to enable us to provide the best possible service.

1. SELEX Sistemi Integrati Inc. model number, type and serial number of equipment.

2. Unit sub-assembly number (where applicable).

3. Item or reference symbol number from parts list or schematic.

4. SELEX Sistemi Integrati Inc. part number and description.

5. Manufacturer's code, name and part number (where applicable).

6. Quantity of each replacement part required.

HOW TO REQUEST REPAIR SERVICE

In order to ensure prompt attention, parts returned for repair should have the following:

1. RMA number (Return Material Authorization number), assigned prior to return when requesting repair
service.

2. Unit part number

3. Site location

4. System information

5. Ship-to address for return

6. Contact name and number

7. Date and time of request

CONTACT INFORMATION

SELEX Sistemi Integrati Inc.

11300 W 89th Street

Overland Park KS, 66214, USA

Main Switchboard: [phone]
Main Fax: [phone]
Toll free: [phone]
CSM Direct Phone: [phone]
CSM E -mail: [e-mail]

World Wide Web URL: www.selex-si-us.com

THIS SHEET INTENTIONALLY BLANK

MANUFACTURER’S WARRANTY

SELEX Sistemi Integrati Inc.

The following warranty is applicable in all cases, except where modified or superseded by specific contract terms.

Contact SELEX Sistemi Integrati Inc. if clarification is required.

A. The Manufacturer warrants to the original Purchaser, subject to the limitations and exclusions stated below, that
mechanical and electrical parts of products which it manufactures, (the “Products” will be free of defects in materials and
workmanship for a period of (I) one (1) year from the date of installation or (ii) 18 months from the date of shipment,
whichever first occurs (the “Warranty Period”).

B. If the Customer believes a Product is defective, notice thereof shall be provided to the Manufacturer’s Customer
Service Department at the address provided on the cover page and (if applicable) to the selling distributor. A defect in
material and workmanship covered by this warranty shall be deemed to have occurred only if, and as of the time when, the
Manufacturer is notified in writing by the Customer, within the Warranty Period, that the Product has become defective,
and the Manufacturer’s personnel verify that the said Product, in fact, does not comply with the warranty provided
hereunder and it is determined that:

(i) The Products, during the entire Warranty Period, have been operated within normal service conditions,
recommended by the Manufacturer and recognized in the industry, and
(ii) The Products have been installed and adjusted according to the Manufacturer’s procedures as stated
in the Instruction Manual or other instructions supplied in writing by the Manufacturer.

C. Failures caused by lightning or other acts of God, or power surges, are not considered to be defects in materials
and workmanship and are not covered under this warranty. Routine Maintenance and calibration are also not considered
to be defects in materials and workmanship and are not covered under this warranty. Any change, modification or
alteration of the Manufacturer’s Products not specifically authorized by the Manufacturer will void this warranty.

D. If it is determined that the conditions for warranty coverage, as described above, have been satisfied, the
Manufacturer shall repair or replace the defective products or parts thereof in accordance with the following procedures:

(i) Customer will contact the Manufacturer’s customer Service Department which will issue the Customer a
Return Authorization (RA) number.
(ii) The Component, defective part, or Product, as appropriate, shall be returned to the Manufacturer for
inspection, freight prepaid by the customer. The Component, defective part, or Product MUST be packaged with an
industry standard anti -static protective bag sufficient to prevent any ESD intrusion during handling and shipment, and
MUST ALSO be packaged to protect from damage due to rough handling encountered during shipment. FAILURE TO
COMPLY WITH THIS REQUIREMENT WILL VOID THE WARRANTY OF THE RETURNED ITEM. The RA number
must be clearly displayed on the exterior of the shipping container. No shipments will be accepted without a RA number.
All custom duties, fees, etc. will be paid by the Customer.
(iii) If, upon inspection it is determined by Manufacturer’s personnel that the Product or component thereof
is indeed defective and covered by this warranty, then Manufacturer, at its option, may either repair the Product or
defective components thereof and return the same to the Customer or ship a replacement for the defective Product or part
thereof, freight paid. All customs duties, fees, etc. will be paid by the Customer. The Product or component thereof will
be returned to the Customer utilizing a shipping mode similar to that used by Customer to ship the same to the
Manufacturer.
(iv) If, upon inspection by Manufacturer, it is determined that the Product or component thereof was not
defective or was not covered by this warranty, then the cost of all of Manufacturer’s inspections and the return shipping
charges will be charged to Customer.

E. The Manufacturer reserves the right to make modifications and alterations to Products without obligation to
install such improvements on, in, or in place of theretofore manufactured products of Manufacturer.

F. Manufacturer does not warranty any Products, components, subassemblies, or parts not of its own manufacture.
Manufacturer hereby transfers to Customer any and all warranties (if any) which it receives from its suppliers.

G. Periodic calibration / re-calibration of test equipment is not covered under this or any Seller’s warranty, and is
the sole responsibility of the Purchaser.

H. Any and all claims for shortages, missing or damaged items must be presented, in writing, to the Seller within 120
days of the date of shipment from Seller’s factory.

I. This warranty applies only to the original purchaser and, unless Customer receives the express written consent
of an officer of Manufacturer, this warranty may not be assigned, transferred, or conveyed to any third party, even if the
third party is a bon a fide purchaser of the Products.

J. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED,
WHETHER STATUTORY OR OTHERWISE, INCLUDING IMPLIED WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE MANUFACTURER BE LIABLE FOR
INDIRECT, INCIDENTAL, COLLATERAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES OF ANY KIND, WHETHER
ARISING OUT OF CONTRACT, TORT, NEGLIGENCE, STRICT LIABILITY OR OTHER PRODUCTS LIABILITY
THEORY.

K. CUSTOMER’S SOLE REMEDY FOR ANY BREACH OF THE WARRANTY SHALL BE THE REPAIR OR
REPLACEMENT OF THE PRODUCTS BY THE MANUFACTURER AS PROVIDED HEREIN, AND IN NO EVENT
SHALL THE MANUFACTURER BE REQUIRED TO INCUR COSTS FOR THE REPAIR OR REPLACEMENT OF ANY
PRODUCT IN EXCESS OF THE PURCHASE PRICE OF SUCH PRODUCT, PLUS ANY TRANSPORTATION
CHARGES ACTUALLY PAID ATTRIBUTABLE TO SUCH PRODUCTS.

MODEL 2130 MARKER BEACON

TABLE OF CONTENTS

Paragraph Description Page #

1. GENERAL INFORMATION AND REQUIREMENTS.................................................................................1-1

1.1 Introduction.......................................................................................................................................................1-1

1.2 Equipment Description.....................................................................................................................................1-1

1.2.1 Monitoring Systems .........................................................................................................................................1-2

1.2.2 Station Control System .....................................................................................................................................1-4

1.2.3 Remote Control and Status Equipment (Optional).......................................................................................1-4

1.2.4 Remote Maintenance Monitoring System .....................................................................................................1-5

1.2.5 RMM Functions................................................................................................................................................1-5

1.2.6 RMM Security...................................................................................................................................................1-6

1.2.7 Environmental Monitoring...............................................................................................................................1-6

1.2.8 Transmitter Description....................................................................................................................................1-7

1.2.8.1 Cabinet Assembly (Unit 1)...............................................................................................................................1-8

1.2.8.2 RMS Processor CCA (1A4).............................................................................................................................1-8

1.2.8.3 Local Control Unit (LCU) CCA (1A3).............................................................................................................1-8

1.2.8.4 Power Control Panel Assembly (1A1)............................................................................................................1-9

1.2.8.5 Power Supply Assembly (1A1A2)..................................................................................................................1-9

1.2.8.6 RF Power Amplifier /Monitor CCA (1A2/1A5).............................................................................................1-9

1.2.8.7 Transmitting Antennas ....................................................................................................................................1-9

1.2.8.8 Portable Maintenance Data Terminal (PMDT) (Optional)..........................................................................1-9

1.2.8.9 Battery Backup Unit (Unit 4)...........................................................................................................................1-9

1.3 Equipment Specifications Data.....................................................................................................................1-13

1.4 Equipment and Accessories Supplied.........................................................................................................1-16

1.5 Equipment Required but not Supplied.........................................................................................................1-17

1.6 Optional Equipment........................................................................................................................................1-17

2. TECHNICAL DESCRIPTION...........................................................................................................................2-1

2.1 Introduction.......................................................................................................................................................2-1

2.2 Antenna Operation...........................................................................................................................................2-1

2.3 Marker Beacon Transmitter Theory of Operation........................................................................................2-1

2.3.1 Marker Beacon Amplifier/ Monitor Theory of Operation...........................................................................2-1

2.3.1.1 Marker Beacon Amplifier/ Monitor Block Diagram Theory........................................................................2-2

2.3.1.2 Marker Beacon Amplifier/ Monitor Detailed Circuit Theory......................................................................2-4

2.3.1.2.1 Power Supply.....................................................................................................................................................2-4

2.3.1.2.2 Synthesizer.........................................................................................................................................................2-4

2.3.1.2.3 Microprocessor Digital Section......................................................................................................................2-5

2.3.2 Marker Beacon RMS Theory of Operation...................................................................................................2-5

2.3.2.1 RMS CCA (012147) (1A4) Block Diagram Theory........................................................................................2-5

2.3.2.2 Marker Beacon RMS CCA Detailed Circuit Theory.....................................................................................2-7

2.3.3 Local Control Unit (1A1) Simplified Theory of Operation........................................................................2-11

2.3.3.1 Local Control Unit (1A1) Block Diagram Theory .......................................................................................2-11

2.3.3.1.1 DC to DC Converter........................................................................................................................................2-11

2.3.3.1.2 Power Fail Detectors.......................................................................................................................................2-11

2.3.3.1.3 Key Switch Registers......................................................................................................................................2-12

2.3.3.1.4 Parallel Interface..............................................................................................................................................2-12

2.3.3.1.5 1.8432MHz Oscillator/Divider Chains..........................................................................................................2-12

2.3.3.1.6 Positive Alarm Register..................................................................................................................................2-13

2.3.3.1.7 Negative Alarm Register................................................................................................................................2-13

2.3.3.1.8 20 Second Delay Counter ...............................................................................................................................2-13

2.3.3.1.9 LCU Transfer Control State Machine #1 and #2 and Discrete Controls.................................................2-13

Rev. A April, 2005 i

This document contains proprietary information and such information may not be disclosed to others for any

purposes without written permission from SELEX Sistemi Integrati Inc.

MODEL 2130 MARKER BEACON

2.3.3.1.10 LED Control ......................................................................................................................................................2-13

TABLE OF CONTENTS (cont.)

Paragraph Description Page #

2.3.3.1.11 Audible Alarm ..................................................................................................................................................2-13

2.3.3.2 Local Control Unit CCA (1A1A1) Detailed Theory of Operation............................................................2-13

2.3.3.2.1 Power Supply...................................................................................................................................................2-13

2.3.3.2.2 Pushbutton Switches and LED Display.......................................................................................................2-14

2.3.3.2.3 Parallel Interface..............................................................................................................................................2-14

2.3.3.2.4 Monitor Alarm Interface Circuitry ................................................................................................................2-17

2.3.3.2.5 Station Control Logic......................................................................................................................................2-17

2.3.3.2.6 Aural Alarm......................................................................................................................................................2-18

2.3.3.2.7 System Configuration Inputs ........................................................................................................................2-18

2.3.3.2.8 Clock Oscillator and Divider..........................................................................................................................2-18

2.3.3.2.9 Reset and Watchdog Circuitry......................................................................................................................2-18

2.3.4 Power Panel Assembly Theory of Operation..............................................................................................2-19

2.3.4.1 Power Supply Theory of Operation..............................................................................................................2-19

2.3.4.2 Battery Charging Power Supply (BCPS) Block Diagram Theory .............................................................2-19

2.3.4.3 Marker Beacon BCPS CCA Detailed Circuit Theory..................................................................................2-20

3. OPERATION.....................................................................................................Error! Bookmark not defined.

3.1 Information........................................................................................................Error! Bookmark not defined.

3.2 Remote Control Status Unit (RCSU)..............................................................Error! Bookmark not defined.

3.3 Remote Status Unit (RSU)...............................................................................Error! Bookmark not defined.

3.4 Portable Maintenance Data Terminal (PMDT)............................................Error! Bookmark not defined.

3.4.1 Equipment Turn On and Shutdown...............................................................Error! Bookmark not defined.

3.4.1.1 Equipment Turn On..........................................................................................Error! Bookmark not defined.

3.4.1.1.1 Connecting the PMDT....................................................................................Error! Bookmark not defined.

3.4.1.1.2 Starting the PMDT Application.....................................................................Error! Bookmark not defined.

3.4.1.1.3 Turning On the Marker Beacon.....................................................................Error! Bookmark not defined.

3.4.1.2 Equipment Shutdown ......................................................................................Error! Bookmark not defined.

3.4.1.2.1 Equipment Turn Off.........................................................................................Error! Bookmark not defined.

3.4.1.2.2 PMDT PC Turn Off..........................................................................................Erro r! Bookmark not defined.

3.4.2 PMDT Screens..................................................................................................Error! Bookmark not defined.

3.4.2.1 Menus ................................................................................................................ Error! Bookmark not defined.

3.4.2.2 System Status at a Glance; Sidebar Status and Control.............................Error! Bookmark not defined.

3.4.2.3 Screen Area.......................................................................................................Error! Bookmark not defined.

3.4.3 Configuring the PMDT....................................................................................Error! Bookmark not defined.

3.4.4 Connecting to the Marker Beacon.................................................................Error! Bookmark not defined.

3.4.4.1 Security Levels .................................................................................................Error! Bookmark not defined.

3.4.4.2 PMDT Logon via Direct or Modem Connection ......................................... Error! Bookmark not defined.

3.4.5 RMS Status Screens........................................................................................Error! Bookmark not defined.

3.4.6 RMS Data Screens...........................................................................................Error! Bookmark not defined.

3.4.6.1 RMS Maintenance Alerts Screen..................................................................Error! Bookmark not defined.

3.4.6.2 Analog-to-Digital Data Screen.......................................................................Error! Bookmark not defined.

3.4.6.3 Digital Inputs Screen.......................................................................................Error! Bookmark not defined.

3.4.7 RMS Configuration Screens...........................................................................Error! Bookmark not defined.

3.4.7.1 General RMS Configuration Screen...............................................................Error! Bookmark not defined.

3.4.7.1.1 General Configuration of the Marker Beacon..............................................Error! Bookmark not defined.

3.4.7.2 A/D Limits Configuration Screen...................................................................Error! Bookmark not defined.

3.4.7.3 Commands.........................................................................................................Error! Bookmark not defined.

3.4.7.4 Monitor Data Screens......................................................................................Error! Bookmark not defined.

ii Rev. A April, 2005

This document contains proprietary information and such information may not be disclosed to others for any

purposes without written permission from SELEX Sistemi Integrati Inc.

MODEL 2130 MARKER BEACON

3.4.7.4.1 Integral Monitor Data Screen.........................................................................Error! Bookmark not defined.

3.4.7.5 Monitor Fault History Screens.......................................................................Error! Bookmark not defined.

TABLE OF CONTENTS (cont.)

Paragraph Description Page #

3.4.7.5.1 Integral Monitor Fault Hist ory Screen..........................................................Error! Bookmark not defined.

3.4.7.5.2 Standby Monitor Fault History Screen.........................................................Error! Bookmark not defined.

3.4.7.5.3 LCU Fault History Screen...............................................................................Error! Bookmark not defined.

3.4.8 Monitor Commands.........................................................................................Error! Bookmark not defined.

3.4.8.1 Monitor Configuration Screens.....................................................................Error! Bookmark not defined.

3.4.8.1.1 Genaral Monitor Configuration......................................................................Error! Bookmark not defined.

3.4.8.1.2 Alarm Limits Configuration.............................................................................Error! Bookmark not defined.

3.4.8.1.3 Monitor Offsets and Scale Factors Scr eens.................................................Error! Bookmark not defined.

3.4.8.2 Monitors Commands.......................................................................................Error! Bookmark not defined.

3.4.8.2.1 Integral Monitor Bypass.................................................................................Error! Bookmark not defined.

3.4.8.2.2 Standby Monitor Bypass................................................................................Error! Bookmark not defined.

3.4.9 Transmitters Data Screens..............................................................................Error! Bookmark not defined.

3.4.10 Transmitters Configuration Screens..............................................................Error! Bookmark not defined.

3.4.11 Controlling the Transmitter via the PMDT...................................................Error! Bookmark not defined.

3.4.11.1 Change the Ident Modulation....................................................................... Error! Bookmark not defined.

3.4.11.2 Change the Power Level..................................................................................Error! Bookmark not defined.

3.4.12 Transmitter Commands....................................................................................Error! Bookmark not defined.

3.4.12.1 Transmitter 1 ..................................................................................................... Error! Bookmark not defined.

3.4.12.2 Transmitter 2 ..................................................................................................... Error! Bookmark not defined.

3.4.12.3 Marker Beacon Ident ....................................................................................... Error! Bookmark not defined.

3.5 RMM..................................................................................................................Error! Bookmark not defined.

3.6 Local Control Unit (LCU)................................................................................Error! Bookmark not defined.

4. STANDARDS AND TOLERANCES..............................................................................................................3-1

4.1 Introduction.......................................................................................................................................................3-1

4.2 Standards and Tolerances ...............................................................................................................................3-1

5. PERIODIC MAINTENANCE...........................................................................................................................4-1

5.1 Introduction.......................................................................................................................................................4-1

5.2 Performance Checks..........................................................................................................................................4-1

5.3 Other Onsite Maintenance...............................................................................................................................4-2

6. MAINTENANCE PROCEDURES ...................................................................................................................5-1

6.1 Introduction.......................................................................................................................................................5-1

6.2 Performance Check Procedures.......................................................................................................................5-1

6.2.1 Equipment Sign-On...........................................................................................................................................5-1

6.2.2 Perform Time Update........................................................................................................................................5-1

6.2.2.1 Test Equipment Required.................................................................................................................................5-1

6.2.2.2 Procedure............................................................................................................................................................5-1

6.2.3 Measurement of RF Pow er...............................................................................................................................5-1

6.2.3.1 Test equipment required..................................................................................................................................5-1

6.2.3.2 Procedure............................................................................................................................................................5-1

6.2.4 Measurement of Modulation Level................................................................................................................5-1

6.2.4.1 Test equipment required..................................................................................................................................5-1

6.2.4.2 Procedure............................................................................................................................................................5-2

6.2.5 Measurement of Modulation Frequency.......................................................................................................5-2

6.2.5.1 Test equipment required..................................................................................................................................5-2

6.2.5.2 Procedure............................................................................................................................................................5-2

6.2.6 Check Automatic transfer/shutdown.............................................................................................................5-2

Rev. A April, 2005 iii

This document contains proprietary information and such information may not be disclosed to others for any

purposes without written permission from SELEX Sistemi Integrati Inc.

MODEL 2130 MARKER BEACON

6.2.6.1 Test equipment required..................................................................................................................................5-2

6.2.6.2 Procedure............................................................................................................................................................5-2

6.2.7 Check Alternate equipment.............................................................................................................................5-2

TABLE OF CONTENTS (cont.)

Paragraph Description Page #

6.2.7.1 Test equipment required..................................................................................................................................5-2

6.2.7.2 Procedure............................................................................................................................................................5-3

6.2.8 Measure Antenna VSWR at Transmitter Output.........................................................................................5-3

6.2.8.1 Test Equipment Required.................................................................................................................................5-3

6.2.8.2 Procedure............................................................................................................................................................5-3

6.3 Other Maintenance Procedures ......................................................................................................................5-3

6.3.1 RF Carrier Frequency Measurement...............................................................................................................5-3

6.3.1.1 Test Equipment Required.................................................................................................................................5-3

6.3.1.2 Procedure............................................................................................................................................................5-4

6.3.2 RF Output Power BITE Calibration.................................................................................................................5-4

6.3.2.1 Test Equipment Required.................................................................................................................................5-4

6.3.2.2 Procedure............................................................................................................................................................5-4

6.3.3 Modulation Percentage BITE Calibration......................................................................................................5-4

6.3.3.1 Test Equipment Required.................................................................................................................................5-4

6.3.3.2 Procedure............................................................................................................................................................5-4

6.3.4 Forward Power, Reflected Power and VSWR BITE Check ..........................................................................5-5

6.3.4.1 Test equipment required..................................................................................................................................5-5

6.3.4.2 Procedure............................................................................................................................................................5-5

6.3.5 Forward and Reflected RF Power BITE Calibration....................................................................................5-6

6.3.5.1 Test equipment required..................................................................................................................................5-6

6.3.5.2 Procedure............................................................................................................................................................5-6

6.3.6 Check Monitor Alarm Points...........................................................................................................................5-6

6.3.6.1 Test equipment required..................................................................................................................................5-6

6.3.6.2 Procedure............................................................................................................................................................5-7

6.3.7 Antenna Feed Line VSWR Check ...................................................................................................................5-7

6.3.7.1 Test equipment required..................................................................................................................................5-7

6.3.7.2 Procedure............................................................................................................................................................5-7

6.4 Special Maintenance Procedures....................................................................................................................5-8

6.4.1 Equipment Cleaning and Inspection..............................................................................................................5-8

6.4.2 Backup Battery Power Check..........................................................................................................................5-8

6.4.3 RF Cable Inspection..........................................................................................................................................5-8

6.4.4 Measure RF Cable Insulation Resistance......................................................................................................5-8

6.4.4.1 Test Equipment Required.................................................................................................................................5-8

6.4.4.2 Procedure............................................................................................................................................................5-9

6.4.5 Measure RF Cable DC Resistance..................................................................................................................5-9

6.4.5.1 Test Equipment required ..................................................................................................................................5-9

6.4.5.2 Procedure............................................................................................................................................................5-9

7. CORRECTIVE MAINTENANCE.....................................................................................................................6-1

7.1 Introduction.......................................................................................................................................................6-1

7.2 Test Equipment Required.................................................................................................................................6-1

7.3 Onsite Corrective Maintenance......................................................................................................................6-1

7.3.1 General Troubleshooting Information............................................................................................................6-1

8. PARTS LIST.......................................................................................................................................................7-1

8.1 Introduction.......................................................................................................................................................7-1

9. INSTALLATION, INTEGRATION AND CHECKOUT...............................................................................8-1

iv Rev. A April, 2005

This document contains proprietary information and such information may not be disclosed to others for any

purposes without written permission from SELEX Sistemi Integrati Inc.

MODEL 2130 MARKER BEACON

9.1 Introduction.......................................................................................................................................................8-1

9.2 Site Information.................................................................................................................................................8-1

9.3 Unpacking and Repacking...............................................................................................................................8-1

9.4 Input Requirement Summary ...........................................................................................................................8-1

TABLE OF CONTENTS (cont.)

Paragraph Description Page #

9.5 Installation Procedures.....................................................................................................................................8-1

9.5.1 Installation Test Equipment.............................................................................................................................8-1

9.5.2 Installation Kits .................................................................................................................................................8-4

9.5.3 Shelter Installation............................................................................................................................................8-4

9.5.4 Marker Beacon Transmitter Cabinet Installation..........................................................................................8-4

9.5.5 Battery Backup Assembly Installation..........................................................................................................8-5

9.5.6 Exterior Interfaced Box Installation.................................................................................................................8-5

9.5.7 Single Yagi Transmitting Antenna and Tower Installation........................................................................8-6

9.6 Initial Start-up and Preliminary Testing.........................................................................................................8-9

9.6.1 Electronics Preparation.....................................................................................................................................8-9

9.6.2 Initial Start-Up....................................................................................................................................................8-9

9.6.2.1 PMDT Hook-Up ................................................................................................................................................8-9

9.6.3 AC/DC Voltage and Current Checks............................................................................................................8-10

9.6.4 RF Forward Power, Reflected RF Power, and VSWR Checks...................................................................8-10

9.6.5 Modulation Percentage and Keying Checks ..............................................................................................8-10

9.7 Installation Verification Tests .......................................................................................................................8-10

9.7.1 Keying Verification.........................................................................................................................................8-10

9.7.2 Verification of Alarm and alert settings.......................................................................................................8-10

9.7.2.1 RF Forwar d Power Alarm Point.....................................................................................................................8-10

9.7.2.2 VSWR Alarm Point..........................................................................................................................................8-10

9.7.2.3 External Monitor Alarm Points......................................................................................................................8-10

9.7.2.4 Alarm Delay Time and Auto-Restart Delay Time.......................................................................................8-10

9.7.2.5 Percent Modulation Scale Factor Circuit.....................................................................................................8-10

9.8 USB-Serial Driver Installation........................................................................................................................8-11

9.8.1 USB-Serial COM Port Notes..........................................................................................................................8-12

10. SOFTWARE.......................................................................................................................................................9-1

10.1 Introduction.......................................................................................................................................................9-1

11. TROUBLESHOOTING SUPPORT DATA ...................................................................................................10-1

11.1 Introduction.....................................................................................................................................................10-1

Rev. A April, 2005 v

This document contains proprietary information and such information may not be disclosed to others for any

purposes without written permission from SELEX Sistemi Integrati Inc.

MODEL 2130 MARKER BEACON

LIST OF FIGURES

Figure # Description Page #

Figure 1-1 Marker Beacon...................................................................................................................................................1-1

Figure 1-2 Marker Beacon System .....................................................................................................................................1-7

Figure 1-3 Marker Beacon Equipment Cabinet, Interior View.......................................................................................1-8

Figure 1-4 Marker Beacon Transmitting Antennas ......................................................................................................1-10

Figure 1-5 Portable Maintenance Data Terminal (PMDT) - Optional .........................................................................1-11

Figure 1-6 Battery Backup Unit........................................................................................................................................1-12

Figure 2-1 Amplifier/Monitor Block Diagram ...................................................................................................................2-2

Figure 2-2 Marker Beacon RMS CCA Block Diagr am....................................................................................................2-7

Figure 2-3 LCU Simplified Block Diagram .......................................................................................................................2-11

Figure 2-4 1.8432 MHz Oscillator/Divider Chains.........................................................................................................2-12

Figure 2-5 FFM / Marker Beacon BCPS Block Diagram...............................................................................................2-19

Figure 3-1 PMDT Configuration Screen..........................................................................Error! Bookmark not defined.

Figure 3-2 PMDT Login Path............................................................................................Error! Bookmark not defined.

Figure 3-3 Modem Phone Number Entry Screen............................................................Error! Bookmark not defined.

Figure 3-4 Password Entry Screen....................................................................................Error! Bookmark not defined.

Figure 3-5 Initial PMDT Screen.........................................................................................Error! Bookmark not defined.

Figure 3-6 RMS Selection Screen.....................................................................................Error! Bookmark not defined.

Figure 3-7 RMS Status Screen..........................................................................................Error! Bookmark not defined .

Figure 3-8 Monitor/Transmitter Status Screen...............................................................Error! Bookmark not defined.

Figure 3-9 Maintenance Alerts/Alarms Screen..............................................................Error! Bookmark not defined.

Figure 3-10 Analog-to-Digital Data Screen.......................................................................Error! Bookmark not defined.

Figure 3-11 Digital Inputs Screen.......................................................................................Error! Bookmark not defined.

Figure 3-12 General RMS Configuration Screen...............................................................Error! Bookmark not defined.

Figure 3-13 A/D Limits Screen............................................................................................Error! Bookmark not defined.

Figure 3-14 RMS Commands Screen..................................................................................Error! Bookmark not defined.

Figure 3-15 Monitors Logon Path......................................................................................Error! Bookmark not defined.

Figure 3-16 Integral Monitor Data Screen.........................................................................Error! Bookmark not defined.

Figure 3-17 Standby Monitor Data Screen........................................................................Error! Bookmark not defined.

Figure 3-18 Monitor Maintenance Alerts..........................................................................Error! Bookmark not defined.

Figure 3-19 Integral Monitor Fault History Screen..........................................................Error! Bookmark not defined.

Figure 3-20 Standby Monitor Fault History Screen.........................................................Error! Bookmark not defined.

Figure 3-21 LCU Fault History Screen...............................................................................Error! Bookmark not defined.

Figure 3-22 General Monitor Configuration Screen.........................................................Error! Bookmark not defined.

Figure 3-23 Alarm Limits Configuration.............................................................................Error! Bookmark not defined.

Figure 3-24 Monitor Offsets and Scale Factors................................................................Error! Bookmark not defined.

Figure 3-25 Monitor Commands Path................................................................................Error! Bookmark not defined.

Figure 3-26 Integral Monitor Bypass.................................................................................Error! Bookmark not defined.

Figure 3-27 Standby Monitor Bypass................................................................................Error! Bookmark not defined.

Figure 3-28 Transmitters Data Screen Path.......................................................................Error! Bookmark not defined.

Figure 3-29 Transmitters Data Screen................................................................................Error! Bookmark not defined.

Figure 3-30 Transmitter Configuration Screen..................................................................Error! Bookmark not defined.

Figure 3-31 Power Sensor Offsets and Scale Factors Screen.........................................Error! Bookmark not defined.

Figure 3-32 Transmitter Commands Screen.......................................................................Error! Bookmark not defined.

Figure 3-33 Transmitter 1 Settings......................................................................................Error! Bookmark not defined.

Figure 3-34 Transmitter 2 Settings......................................................................................Error! Bookmark not defined.

Figure 3-35 Marker Beacon Ident Settings........................................................................Error! Bookmark not defined.

Figure 3-36 Local Control Unit, Transmitter Control.......................................................Error! Bookmark not defined.

Figure 3-37 Local Control Unit, Monitor Alarms and Bypass Control.........................Error! Bookmark not defined.

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MODEL 2130 MARKER BEACON

Figure 3-38 Local Control Unit, System Status and Control Functions........................Error! Bookmark not defined.

LIST OF FIGURES (cont.)

Paragraph Description Page #

Figure 9-1 Typical Marker Beacon Site Details ...............................................................................................................8-2

Figure 9-2 Typical Marker Beacon Shelter Details..........................................................................................................8-3

Figure 9-3 Battery Backup Installation Kit.......................................................................................................................8-5

Figure 9-4 Antenna Monitor Assembly Mounting Details for Single Yagi Antenna...............................................8-7

Figure 9-5 Yagi Antenna Assembly..................................................................................................................................8-8

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MODEL 2130 MARKER BEACON

LIST OF TABLES

Table # Description Page #

Table 1-1 Equipment Specifications Data.....................................................................................................................1-13

Table 1-2 Equipment and Accessories Supplied.........................................................................................................1-16

Table 1-3 Equipment Required But Not Supplied........................................................................................................1-17

Table 1-4 Optional Equipment........................................................................................................................................1-17

Table 2-1 Marker Beacon Coverage Pattern...................................................................................................................2-1

Table 3-1 PMDT Interconnect Cable Pin-out ................................................................ Error! Bookmark not defined.

Table 3-2 Functions Available via PMDT.....................................................................Error! Bookmark not defined.

Table 3-3 Marker Beacon Security Levels .....................................................................Error! Bookmark not defined.

Table 3-4 General Configuration Parameters .................................................................Error! Bookmark not defined.

Table 4-1 Standards and Tolerances ...............................................................................................................................3-1

Table 5-1 Performance Checks..........................................................................................................................................4-1

Table 5-2 Other Onsite Maintenance Checks.................................................................................................................4-2

Table 8-1 Marker Beacon, Single Equipment – 002130-0101........................................................................................7-1

Table 8-2 Marker Beacon, Dual Equipment – 002130-0102...........................................................................................7-1

Table 8-3 Marker Beacon, Single Equipment w/Single Far Field Monitor – 002130-1101........................................7-1

Table 8-4 Marker Beacon, Single Equipment w/Dual Far Field Monitor – 002130-1102..........................................7-1

Table 8-5 Marker Beacon, Dual Equipment w/Single Far Field Monitor – 002130-1103..........................................7-2

Table 8-6 Marker Beacon, Dual Equipment w/Dual Far Field Monitor – 002130-1104.............................................7-2

Table 8-7 Civil Installation Kit, Tower Mount Antenna - 470252-0001......................................................................7-2

Table 8-8 Civil Installation Kit, Pole Mount Antenna – 470558-0001.........................................................................7-2

Table 8-9 Antenna Kit, Tower Mount, Marker Beacon – 470592-0001......................................................................7-3

Table 8-10 Exterior Interface Kit, Pole Mounted Antenna – 470593-0001....................................................................7-4

Table 8-11 Exterior Interface Kit, Tower Mounted Antenna – 470594-0001................................................................7-5

Table 8-12 Antenna Kit, Pole Mount, Marker Beacon – 470596-0001..........................................................................7-6

Table 8-13 Antenna Cable Kit, Marker Beacon - 470598-0001.......................................................................................7-7

Table 9-1 Marker Beacon Installation Kits .....................................................................................................................8-4

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MODEL 2130 MARKER BEACON

1. GENERAL INFORMATION AND REQUIREMENTS

1.1 Introduction

This technical manual contains information required to operate and maintain the Model 2130 Marker Beacon Equipment. It
incorporates the equipment description and specification data, a thorough technical description, complete operating
procedures, operational standards and tolerances, procedures specifying when and how to perform routine and corrective
maintenance, a comprehensive parts list, detailed installation instructions and support schematics and drawings.

1.2 Equipment Description

Refer to Figure 1-1. Marker Beacons are used to provide an aircraft both an aural and visual indication of station passage.
Station identification is provided by both a modulation frequency and keying code. The Marker Beacon transmits an
upward-directed elliptical signal of information at a frequency of 75-MHz. Each Marker Beacon signal is amplitude
modulated by an audio tone which is Morse code keyed. Both the audio tone frequency and the keying are distinctive
according to the marker's location.

Figure 1-1 Marker Beacon

The Marker Beacon is used in two distinct operational environments: en-route or terminal facility. Terminal application
Marker Be acons or, as they are more commonly called, Instrument Landing System (ILS) Marker Beacons, are located
along the extended runway centerline and are used as distance-to-touchdown indicators to indicate significant points
along an instrument approach path. These types are classified as the Outer, Middle, and Inner Marker Beacon systems.
Fan Marker Beacons may also be associated with the ILS to serve as a localizer step down fix or Missed Approach Point
(MAP) for circling approaches to secondary airports.

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MODEL 2130 MARKER BEACON

When used for en route applications, the Marker Beacon is configured as a fan marker. It can be used with other
Navigational Aid equipment and its use depends upon instrument flight procedural applications.

For ILS operation, an outer marker is typically located 4 nautical miles from the runway threshold; this location normally
coincides with the point on the ILS approach at which the glide slope altitude equals the intercept altitude. A middle
marker is typically located 3,500 feet from the runway threshold; this location normally coincides with the point on the
glide path at which the Decision Height (DH) is located for Category I operations 200 feet above the touchdown zone
elevation. The inner marker is only installed for Category II and III ILS approaches, and is located approximately 1000 feet
from the runway approach threshold, coinciding with the nominal Category II decision height of 100 feet.

The inner , middle and outer marker antennas are single five element Yagis.

The Marker Beacon (Figure 1-2) is of modular design and completely solid -state. Both single equipment and dual
equipment transmitters are available. Battery backup (Figure 1-6) is optional and pr ovides power in case of primary AC
power failure. Operating control of the Marker Beacon system is by a Portable Maintenance Data Terminal (PMDT) The
PMDT is an IBM compatible personal computer running SELEX SISTEMI INTEGRATI INC. proprietary application
software. The two antenna configurations (pole and tower ) are shown in Figure 1-4.

Microprocessor-controlled monitoring and built -in test equipment are an integral part of the equipment. This allows
continuous monitoring of all required parameters as well as the testing, control, and display of voltages, currents, and
frequencies.

The Marker Beacon can be remotely monitored through:
a. Dedicated telephone lines to the Model 2238 Remote Status Control Unit.

b. Optional radio link operating at either 900 MHz or 2.4 GHz.
c. Remote Maintenance Monitoring (RMM) - Switched telephone lines and modem integrated within the 2130 Marker

Beacon allow for interface to remote monitoring points using the PMDT software.

1.2.1 M onitoring Systems

A high integrity integral monitoring system incorporated in the Marker Beacon system to provide fault detection by
monitoring the transmitted signals and initiating automatic station transfer to a standby transmitter or shutdown in the
event of an out-of-tolerance condition.

Dual, parallel monitoring channels are included for measurement of important signal parameters for the On -the-Air
Transmitter and Standby Transmitter.

Independently adjustable pre-alarm (maintenance alert) indications are included for all executive monitoring parameters.

All executive and maintenance alarm indications are provided both locally at the station and remotely through the Remote
Maintenance Monitoring (RMM) system.

Integrity of the m onitors is assured by certification testing using a built-in Test Generator.

Failsafe design of the monitors ensures the removal of Navigation and Identification signals and the transmission of a
warning signal to the remote control and monitoring points in the event of a failure in the monitoring system itself.
Failsafe testing of the m onitors and control circuits has been performed to verify that any single failure of a component,
open or short in the monitor(s) or control circuit will either result directly in an alarm condition, or will not alter any alarm
threshold level to allow an out-of-tolerance condition to occur without detection.

The monitoring system includes a bypass capability to disable the automatic station control action during adjustment and
maintenance. Front panel amber "bypass" and "alarm" lights are illuminated any time the integral or standby transmitter

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MODEL 2130 MARKER BEACON

is bypassed.

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MODEL 2130 MARKER BEACON

All monitored and internally measured system parameters are available for display via the station RS- 232 communications
port and the Portable Maintenance Data Terminal (PMDT). The parameters are also available remotely through the
Remote Maintenance Monitoring (RMM) system.

1.2.2 Station Control System

The station control system provides for manual control of the station during maintenance operations and for automatic
control during unattended operation.

The Local Control Unit provides the following system features:
a. Local On/Off control and status indication of the transmitting equipment.

b. Selection of which transmitter operates as Main and which oper ates as Standby.
c. Monitor bypass capability with indications for the Integral and Standby Transmitter monitoring systems.
d. Provisions for either Local or Remote control of the transmitting equipment.
e. System reset capability.
f. Automatic transfer capability fro m the Main to the Standby transmitting equipment (or shut down for single

transmitter) in response to monitor alarm conditions following an adjustable preset alarm delay period. The Standby
transmitter is operated in the "hot standby" mode for CAT III stations, and may be operated as either a "hot or cold"
standby for CAT II or CAT I operations. When operated in the "hot standby" mode, the standby transmitter is
placed on line immediately at the end of the alarm delay period. When operated in the "cold standby" mode, the
standby transmitter is activated following a preset alarm delay period (20 seconds, minimum).

g. Two automatic station restart attempts following shutdown; the first after a time delay of 50 seconds, and the second

after a fixed delay of 15 minutes. If either restart attempt is successful, all delay timers are reset to their original
condition. If the restart is not successful then a manual local or remote restart is required. If an alarm occurs the alarm
indicator at the RCSU is activated.

h. Automatic station transfer to and from the no-break standby battery system in the event of a primary AC power

failure and subsequent restoration; and automatic turn -on following restoration of primary AC power should the
standby battery system be depl eted. Batteries automatically recharge on restoration of primary power.

i. In addition to the control features above, system control and monitoring functions as well as verification and

adjustment of proper transmitting and monitoring parameters are availabl e using Windows™ based displays via an
RS-232 communications port on the transmitter cabinet and a Portable Maintenance Data Terminal (PMDT). The
system is password controlled such that system adjustments are possible only with entry of the proper security
codes. A second RS-232 communications port is connected to a modem for system operation and monitoring via a
dial-up telephone line to a remote location.

1.2.3 Remote Control and Status Equipment (Optional)

An optional Remote Status and Control Unit (RCSU) and up to three Remote Status Units (RSU) are available for remote
control and status monitoring of the Marker Beacon station.. Provisions are included for On/Off status monitoring of
auxiliary transmitting equipment which may be installed at the Marker Beacon station.

The RCSU is a computer using Windows™ type displays and is designed for installation in a control tower equipment
room. The RSU/s are driven by the RCSU and are designed for installation at controller positions within the tower.

Features of the RCSU system include:
a. On/Off, and Transfer control for the Marker Beacon.

b. Status indications on the RCSU and RSU(s) for the Marker Beacon facility.
c. Interlock capability on the primary RSU for Localizer, Glideslope, Marker Beacon and DME systems located on

opposite ends of the same runway. Runway-Selected indication is provided on all RSUs.

d. Remote access to the RMM system on any of the Localizer, Glideslope or VOR stations through the RCSU computer

via modem or TCP/IP network.

e. Only a single dedicated control line is required from the RCSU to each of the connected stations.

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MODEL 2130 MARKER BEACON

1.2.4 Remote Maintenance Monitoring System

The integral Remote Maintenance Monitoring (RMM) system operates in conjuncti on with the Local Control Unit and
Portable Maintenance Data Terminal (PMDT). It consists of the various embedded sensors, internal monitoring points,
microcomputers and built -in test equipment to remotely monitor, control, record and certify proper operation of the
Marker Beacon subsystems.

In addition to local access to the RMM system through the built-in RS-232 port, and remote RMM access through a dial ­up telephone line and the Portable Maintenance Data Terminal (PMDT), the Remote Control and Status Unit (RCSU)
computer and modem may be utilized for dial -up access to the RMM system.

All components of the RMM subsystem meet the requirements for Class A computing devices in accordance with
subpart B, Part 15, and certification in accordance with subpart J, Part 2 of the FCC Rules and Regulations.

1.2.5 RMM Functions

The RMM system provides the following key functions:
a. System control.

b. Adjustment of transmitting parameters on the Marker Beacon system. For security, this feature is available only at

the respective station by default. Each station may be optionally configured to allow adjustment from a remote
location.

c. Monitoring of system performance and certification parameters. Compares the outputs of each of the monitoring

devices to determine alarm and alert status by comparing the monitored values to pre-determined limits.

d. Adjustment of all alarm and alert monitoring limits. For security, this feature is available only at the respective

Localizer or Glideslope station by default. Each station may be optionally configured to allow adjustment from a
remote locati on.

e. Monitor Certification.
f. Storage of monitor alert and alarm data.
g. System Fault Diagnostic routines with result storage and reporting for Localizer and Glideslope systems. On-Air

diagnostic routines for the Localizer and Glideslope stations may be initiated either locally at the station or remotely.
Diagnostic routines which require the respective station to be NOTAMED out of service must be run locally at the
station by default. Each station may be optionally configured to allow all diagnostic routines to be run from a remote
location.

h. Monitoring of routine maintenance parameters including voltages and currents and VSWR.
i. Monitoring of environmental parameters (when optional sensors are installed).
j. Monitoring of primary AC power applied to the system .
k. Monitoring of standby battery voltage and current.
l. Printing of menus and all display/parameter values.

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MODEL 2130 MARKER BEACON

1.2.6 RMM Security

The RMM system is designed in accordance with FAA Order 6000.32 (Security Requirements for Remote Access of NAS
Facilities), and FAA Specification FAA-E-2852/b (Category II/III Instrument Landing System) and features a 4-level
security system to insure only authorized personnel have access to the various system functions and commands. The
four password controlled levels are:

Level 1 - Allows access for display-only of system status, configuration and monitored system
parameters. No control functions are available at this level.

Level 1 access requires a general User ID without a Password.

Level 2 - Level 1 access plus the ability to run tests or diagnostics and make adjustments which do not
affect the integrity of the system.

Level 2 access requires a unique User ID and Password.

Level 3 - Full access to all functions available in the system, except assignment of user ID’s and
Passwords.

Level 3 requires a unique User ID and Password.

Level 4 - Full system access to all functions available in the system, including assignment of user ID's
and passwords.

Level 4 access requires a user to be logged-in at any level and enter a second unprompted
password.

Error flags are provided for invalid User ID or Password entry.

Protection against unsuccessful log-on is provided in the system by either of the following time-out events:
a. Three unsuccessful attempts to enter either a valid User ID or password results in automatic disconnection of the

terminal port or dial up-modem for three minutes.

b. If no activity occurs for a period of 15 minutes, the user is automatically logged off and, if a dial-up modem is

connected, the modem disconnects from the telephone line.

1.2.7 Environmental Monitoring

Optional environmental monitoring is available for the Marker Beacon stations. Inside and outside temperature, smoke,
and intrusion sensors are included which alert the maintenance technician to conditions that may affect the on-air
availability of these critical systems.

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MODEL 2130 MARKER BEACON

1.2.8 Transmitter Description

Figure 1-2 Marker Beacon System

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MODEL 2130 MARKER BEACON

1.2.8.1 Cabinet Assembly (Unit 1)

Refer to Figure 1-3. The cabinet is 24 inches high, 21 inches wide and 10 inches deep. The cabinet is an aluminum metal
housing for the electronics of the Marker Beacon system. This cabinet also accommodates one or two Far Field Monitor
receivers. When a FFM alone is required the Marker Beacon electronics are not provided. Up to two Marker Beacon
transmitters and two Far Field Monitor s can be located within the cabinet at the same time. There are no vents due to the
low power consumption and low power dissipation within the Marker Beacon cabinet. A hinged lockable front door on
the front provides access to the assemblies and circuit card assemblies (CCAs) . The cabinet is a welded assembly with
EMI gasket material to reduce stray radiation from the cabinet.

The cabinet contains the AC and DC primary controls, provisions for interconnect between primary power, and RF
antenna connections.

1.2.8.2 RMS Processor CCA (1A 4)

The RMS Processor CCA is located on the rear wall of the cabinet. The RMS CCA contains the system software and
performs control, monitoring, and test functions under processor control. The RMS CCA connects to the main wiring
harness through the 37 pin D connector and to one or two amplifier/monitor assemblies through 25 pin D connectors.

1.2.8.3 Local Control Unit (LCU) CCA (1A 3)

The Local Control Unit CCA is located on the top control panel inside the Marker Beacon Cabinet. The 012143- 1001 Local
Control Unit CCA is attached to the rear of the front panel. This unit provides Local ON/ OFF control as well as automatic
changeover control. The LCU also includes the transfer relays required for selecting the transmitter attached to the
Marker Beacon antenna system. In a dual system the standby transmitter is directed into an attenuator and fed back to
each Amplifier/ Monitor for Standby transmitter monitoring.

Figure 1-3 Marker Beacon Equipment Cabinet, Interior View

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MODEL 2130 MARKER BEACON

1.2.8.4 Power Control Panel Assembly (1A 1)

The Power Control Panel assembly is located within the cabinet housing and measures 11 inches wide by 8-1/4 inches
long by 3 inches deep. This assembly contains the AC power switches, DC power switches and battery charging power
supplies . It provides 15 VDC from the AC primary input, for the Marker Beacon electronics and charging voltage/current
for the optional backup battery supply. An AC outlet with fuse is provided on the front of the assembly. The Battery
Charging Power Supply (BCPS) circuit card assembly is attached to the back side of the Power Control Panel Assembly.
The BCPS is common to both the Marker Beacon and FFM. The BCPS with the associated power supply provides
sufficient capacity to power both the Marker Beacon and FFM electronics and to recharge the battery in the required time.

1.2.8.5 Power Supply Assembly (1A 1A2)

The Power Supply assembly is located within the BCPS enclosure at the bottom of the cabinet in a ventilated aluminum
housing. This power supply is a 15 Volt DC assembly that operates on uni versal AC input voltage. The selection of AC
input is automatically selected; no jumpers required.

1.2.8.6 RF Power Amplifier /Monitor CCA (1A 2/1A5)

The RF Power Amplifier CCA is located on the left inside wall of the cabinet. For a single Marker Beacon the 1A2
assembly is located in the upper position. For a dual transmitter the second amplifier/ monitor (1A5) is installed in the
lower position. The RF Power Amplifier/Monitor CCA provides RF tone generator, modulator and identification keying.
The assembly inclu des a three channel frequency synthesizer used to offset the output frequency +/- 4 kHz from the
nominal channel if desired. The power amplifier/ monitor processes the RF monitor signal from the antenna and connects
to the main wiring harness through a 25 pin connector .

1.2.8.7 Transmitting Antennas

Refer to Figure 1-4. There are two transmitting antenna configurations used to provide the proper patterns at the Marker
Beacon sites. A single Yagi is used for the inner marker and the middle/outer marker. The inner marker antenna is
mounted on a self supporting aluminum pole. The aluminum pole has a frangible joint located 3 inches above ground level
and is designed to collapse under impact from an aircraft imparting 4000 lbs-force of shear force parallel to the runway
centerline, with minimal damage to the aircraft. The middle and outer marker antennas are mounted on galvanized steel
towers.

1.2.8.8 Portable Maintenance Data Terminal (PMDT) (Optional)

Refer to Figure 1-5. This video terminal consists of a laptop computer and is used for local control and maintenance of the
Marker Beacon. The PMDT is attached to the RMS CCA located on the back wall of the cabinet. The operation of the
PMDT software is described in Section 3 of this manual.

1.2.8.9 Battery Backup Unit (Unit 4)

Refer to Figure 1-6. The battery backup unit consists of one floor mounted battery enclosure which contains one lead-
acid maintenance-free batter y for single equipment and two batteries for dual equipment. Additional backup capacity can
be achieved by adding additional units. The battery backup unit is shared with a Far Field Monitor receiver as they reside
in the same enclosure. Marker Beacon 1 and FFM 1 share a battery set and for dual equipment, Marker Beacon 2 and FFM
2 share a battery set. The battery backup rack is manufactured from aluminum that is gold iridized and painted to provide
adequate protection against damage caused by electrolyte leakage. A cover is provided to allow maintenance access and
to prevent accidental shorting of the battery terminals. The battery rack is open in the front and rear to provide visual
inspection and air flow for ventilation.

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MODEL 2130 MARKER BEACON

Figure 1-4 Marker Beacon Transmitting Antennas

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MODEL 2130 MARKER BEACON

Figure 1-5 Portable Maintenance Data Terminal (PMDT) – Optional

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MODEL 2130 MARKER BEACON

Figure 1-6 Battery Backup Unit

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