31R4-2FRN45-2-33GE-1.pdf

TO 31R4-2FRN45-2-33GE-1

1 SEPTEMBER 2003 Change 2 6 FEBRUARY 2012

TECHNICAL MANUAL

GENERAL EQUIPMENT DESCRIPTION

ORGANIZATIONAL MAINTENANCE

TACAN NAVIGATIONAL SET

AN/FRN-45

PN 880199

DISCLOSURE NOTICE – This information is furnished upon the condition that it will not be released to another nation without the specific authority of the Department of the Air Force of the United States, that it will be used for military purposes only, that individual or corporate rights originating in the information, whether patented or not, will be respected, that the recipient will report promptly to the United States, any known or suspected compromise, and that the information will be provided substantially the same degree of security afforded it by the Department of Defense of the United States. Also, regardless of any other markings on the document, it will not be downgraded or declassified without written approval of the originating United States agency.

DISTRIBUTION STATEMENT D - Distribution authorized to Department of Defense and U.S. DoD contractors only. Due to critical technology (6 February 2012). Other requests for this document shall be referred to OC-ALC/GKAAB, Tinker AFB, Oklahoma 73145-9155.

WARNING - This document contains technical data whose export is restricted by the Arms Export Control Act (Title 22, U.S.C. 2751 et seq.) or Executive Order 12470. Violations of these export laws are subject to severe criminal penalties. Disseminate in accordance with provisions of DoD Directive 5230.25.

HANDLING AND DESTRUCTION NOTICE - Handle in compliance with distribution statement and destroy by any method that will prevent disclosure of the contents or reconstruction of the document.

PUBLISHED UNDER THE AUTHORITY OF THE SECRETARY OF THE AIR FORCE

*Zero in this column indicates an original page

A Change 2 USAF

NOTE: The portion of the text affected by the change is indicated by a vertical line in the outer margins of the page. Changes to illustrations are indicated by miniature pointing hands. Changes to wiring diagrams are indicated by shaded or screened areas.

TOTAL NUMBER OF PAGES IN THIS MANUAL IS 116, CONSISTING OF THE FOLLOWING:

Title A i - viii 1-1 - 1-4 2-1 2-2 Blank 3-1 - 3-4 3-5 3-6 - 3-14 4-1 4-2 Blank 5-1 - 5-35

5-36 Blank 6-1 6-2 Blank 7-1 7-2 Blank 8-1 8-2 Blank 9-1 9-2 Blank 10-1 10-2 Blank 11-1

11-2 Blank 12-1 - 12-17 12-18 Blank 13-1 13-2 Blank 14-1 14-2 Blank 15-1 - 15-5 15-6 - 15-8 15-9 15-10 Blank A-1 - A-4

Dates of issue for original and changed pages are:

Original . . . . . . . . . . . . . . . . 0 . . . . .1 September 2003 Change . . . . . . . . . . . . . . . . 2 . . . . . . 6 February 2012

Change. . . . . . . . . . . . . . . . . 1 . . . . . . . . . 19 June 2009

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INSERT LATEST CHANGED PAGES. DESTROY SUPERSEDED PAGES.

LIST OF EFFECTIVE PAGES

T.O. 31R4-2FRN45-2-33GE-1

i

TABLE OF CONTENTS

Chapter/Para Page

LIST OF ILLUSTRATIONS ............................................................................................................................... iv

LIST OF TABLES............................................................................................................................................... v

FOREWORD..................................................................................................................................................... vi

1 ORGANIZATIONAL MAINTENANCE MANUAL SET ..............................................................................1-1

1.1 Maintenance Manual Set Arrangement ................................................................................1-1

1.1.1 General Equipment Manual ..................................................................................................1-1

1.1.2 General System Manual .......................................................................................................1-1

1.1.3 Job Guide Manual .................................................................................................................1-1

1.1.4 Fault Isolation Manual...........................................................................................................1-1

1.1.5 Schematic Diagrams Manual ................................................................................................1-3

1.1.6 Reference Designator ...........................................................................................................1-3

1.1.7 Illustrated Parts Breakdown ..................................................................................................1-3

1.1.8 Maintenance Manual Set Technical Order Numbering System............................................1-3

1.1.9 System/Subsystem/Sub-Subsystem Numbering System.....................................................1-4

1.1.10 Related Technical Manuals...................................................................................................1-4

2 TCTO INCORPORATION RECORD........................................................................................................2-1

2.1 TCTO Historical Record........................................................................................................2-1

3 EQUIPMENT DESCRIPTION...................................................................................................................3-1

3.1 General Description ..............................................................................................................3-1

3.2 Physical Description..............................................................................................................3-1

3.2.1 TACAN Shelter......................................................................................................................3-1

3.2.2 Air Traffic Control (ATC) Facility .........................................................................................3-13

3.2.3 Remote Maintenance Work Center (RMWC) .....................................................................3-13

4 RESERVED..............................................................................................................................................4-1

5 GENERAL MAINTENANCE PROCEDURES...........................................................................................5-1

5.1 Operating Instructions...........................................................................................................5-1

5.1.1 Operating Procedures...........................................................................................................5-1

5.1.2 Log-In Procedure ..................................................................................................................5-1

5.1.3 PC Display Description .........................................................................................................5-1

5.1.4 Menu Operate Procedure .....................................................................................................5-9

5.1.5 Menu Item Description ........................................................................................................5-10

5.2 Test Procedures..................................................................................................................5-21

5.2.1 Preshakedown Test ............................................................................................................5-22

5.2.2 Shakedown Test .................................................................................................................5-22 ii

TABLE OF CONTENTS (Continued)

Chapter/Para Page

5 (Cont’d)

5.2.3 24 Hour Operational Test Procedure ..................................................................................5-28

5.2.4 Flight Check Procedures.....................................................................................................5-30

5.3 Site Commission .................................................................................................................5-33

5.3.1 Identification Procedure ......................................................................................................5-33

5.4 Emergency Operation .........................................................................................................5-33

5.4.1 Emergency Shutdown Procedure .......................................................................................5-33

5.4.2 Loss of DAPS......................................................................................................................5-33

5.5 Performance Test Checks...................................................................................................5-33

5.5.1 Radio Frequency Monitor A ................................................................................................5-33

5.5.2 Radio Frequency Monitor B ................................................................................................5-34

5.5.3 TACAN Detected Ident........................................................................................................5-35

5.5.4 TACAN Local Status Indicators ..........................................................................................5-35

6 DIMENSIONS AND AREAS .....................................................................................................................6-1

6.1 General .................................................................................................................................6-1

6.2 Dimensions and Areas..........................................................................................................6-1

7 RESERVED..............................................................................................................................................7-1

8 RESERVED..............................................................................................................................................8-1

9 RESERVED..............................................................................................................................................9-1

10 RESERVED............................................................................................................................................10-1

11 RESERVED............................................................................................................................................11-1

12 SITING AND INSTALLATION ................................................................................................................12-1

12.1 General ...............................................................................................................................12-1

SECTION I. Installation Logistics ..........................................................................................................12-1

12.2 TACAN Shelter and Antenna Siting ....................................................................................12-1

12.2.1 The Practical Site ................................................................................................................12-1

12.2.2 Natural Terrain Criteria........................................................................................................12-1

12.2.3 Antenna Control Cabinet Siting...........................................................................................12-1

12.3 Site Requirements...............................................................................................................12-1

12.4 Installation Requirements....................................................................................................12-2

12.4.1 Receiving Data....................................................................................................................12-2

12.4.2 Material Handling ................................................................................................................12-2

12.4.3 Shipping Crates, Weights and Dimensions.........................................................................12-2 iii

TABLE OF CONTENTS (Continued)

Chapter/Para Page

12 (Cont’d)

12.4.4 Cabling Requirements ........................................................................................................12-2

12.4.5 Special Installation Requirements.......................................................................................12-2

12.4.6 Unpacking ...........................................................................................................................12-2

SECTION II. Installation Procedures.....................................................................................................12-7

12.5 Shelter Installation Procedures ...........................................................................................12-7

12.5.1 Transponder Group (32-05-000).........................................................................................12-7

12.5.2 TACAN Cabinet Subassembly Connections.....................................................................12-15

12.5.3 Modulation Generator (when OE-258/URN Antenna is used)..........................................12-15

12.5.4 Shelter PC.........................................................................................................................12-16

12.6 Installation at ATC Facility ................................................................................................12-16

12.7 INSTALLATION AT RMWC ..............................................................................................12-16

13 RESERVED............................................................................................................................................13-1

14 RESERVED............................................................................................................................................14-1

15 PREPARATION FOR USE AND RESHIPMENT ...................................................................................15-1

SECTION I. Preparation for Use ...........................................................................................................15-1

15.1 General ...............................................................................................................................15-1

15.2 Facility Inspection................................................................................................................15-1

15.2.1 Shelter.................................................................................................................................15-1

15.2.2 Air Traffic Control (ATC) Facility .........................................................................................15-1

15.2.3 Remote Maintenance Work Center (RMWC) .....................................................................15-2

15.3 Initial Setup .........................................................................................................................15-2

15.3.1 Switch Positions ..................................................................................................................15-2

15.3.2 Power Turn-On....................................................................................................................15-2

15.3.3 Initial PC Entries..................................................................................................................15-4

15.3.4 Monitor A Preliminary Setup ...............................................................................................15-4

15.3.5 Monitor B Preliminary Setup ...............................................................................................15-4

15.4 Initial Alignment...................................................................................................................15-6

Section II. Preparation for Reshipment .................................................................................................15-9

15.5 General ...............................................................................................................................15-9

15.6 TACAN Shelter....................................................................................................................15-9

15.7 Remote Maintenance Work Center (RMWC) .....................................................................15-9

15.8 Air Traffic Control (ATC) Facility .........................................................................................15-9

Appendix A VOR Reference Designator - S/S/SN Cross Reference......................................................A-1 iv

LIST OF ILLUSTRATIONS

Figure Title Page

3-1 Typical TACAN Facility and Equipment Locations ...............................................................3-2 3-2 Transponder Rack Components ...........................................................................................3-9 3-3 Power Supply (33-26-000) ..................................................................................................3-10 3-4 Transponder (33-35-000)....................................................................................................3-11 3-5 Radio Frequency Amplifier (RFA) (33-37-000) ...................................................................3-12 3-6 Radio Frequency Monitors A and B (33-45-000 and 33-46-000) .......................................3-14

5-1 Master Menu Display ............................................................................................................5-3 5-2 TACAN Monitored Data Menu Display .................................................................................5-4 5-3 TACAN Maintenance Data Menu Display.............................................................................5-5 5-4 TACAN Basic Control Menu Display.....................................................................................5-5 5-5 TACAN Fault Limit Data Display...........................................................................................5-6 5-6 TACAN Facility References Data Display.............................................................................5-6 5-7 TACAN Mod Generator Status .............................................................................................5-7 5-8 Computer Control Display.....................................................................................................5-7 5-9 Fault Diagnostics Menu Display............................................................................................5-8 5-10 TACAN/VOR System Adjustments Menu Display ................................................................5-8 5-11 Automatic Data Update Control Menu Display .....................................................................5-9 5-12 Password Control Menu Display...........................................................................................5-9 5-13 TACAN Calibration/Test Modes..........................................................................................5-13

12-1 Cabinet Mounting Hole Pattern.........................................................................................12-10 12-2 EMI Filter ...........................................................................................................................12-11 12-3 TACAN Cabinet Assembly................................................................................................12-12 12-4 Drawer Installation ............................................................................................................12-13 12-5 External Battery Installation ..............................................................................................12-17

15-1 TACAN Output Signal at 2J2 ..............................................................................................15-8 v

LIST OF TABLES

Table Title Page

1-1 Related Technical Manuals...................................................................................................1-4

3-1 TACAN Navigational System Capabilities and Limitations...................................................3-3 3-2 Transponder System Capabilities and Limitations................................................................3-4

5-1 System Status Display Code ................................................................................................5-2 5-2 Operation Mode Display Code..............................................................................................5-2 5-3 Personal Computer Status Display Code .............................................................................5-3 5-4 Master Menu Display ............................................................................................................5-4 5-5 Error Message Display........................................................................................................5-10 5-6 Menu Item Function Description .........................................................................................5-13 5-7 Power Cutback Factor.........................................................................................................5-21 5-8 Initial TACAN Settings.........................................................................................................5-24 5-9 TACAN Maintenance Data Requirements ..........................................................................5-24 5-10 TACAN Monitored Data Requirements...............................................................................5-25 5-11 TACAN Fault Limit Requirements.......................................................................................5-30

6-1 TACAN Navigational Set Equipment Dimensions ................................................................6-1

12-1 Site Requirements...............................................................................................................12-2 12-2 Bill of Materials....................................................................................................................12-2 12-3 Shipping Crates, Weights and Dimensions ........................................................................12-3 12-4 Interconnecting Cables .......................................................................................................12-3 12-5 Special Installation Requirements.......................................................................................12-7 12-6 Installation Hardware ..........................................................................................................12-8 12-7 TACAN Installation Kit, Part No. 105655 ............................................................................12-9 12-8 TACAN Cabinet Subassembly Connections.....................................................................12-14

15-1 Initial Setup Switch/Control Positions .................................................................................15-3 15-2 Initial Setup Parameter Value .............................................................................................15-5 15-3 TACAN Default Values .......................................................................................................15-5 vi

FOREWORD

1. PURPOSE.

The General Equipment manual describes the overall equipment and provides a brief description of the systems and subsystems installed in the TACAN Navigational Set. The manual provides an overview of the Organizational Maintenance Manual Set and an explanation of the TACAN Navigational Set Technical Order Numbering System. The manual contains a complete listing of Time Compliance Technical Orders (TCTOs) incorporated into the organizational maintenance manual set which is arranged in TCTO number sequence.

2. SCOPE.

The General Equipment manual provides general information to be used by the maintenance personnel to further their understanding of the equipment and the installed systems. The manual provides organizational maintenance information that is not adaptable to job guide format.

3. ARRANGEMENT.

The GE manual is arranged by chapters and subject matter as follows:

Chapter 1 - Organizational Maintenance Manual Set

Chapter 2 - TCTO Incorporation Record

Chapter 3 - Equipment Description

Chapter 4 - Reserved

Chapter 5 - General Maintenance Procedures

Chapter 6 - Dimensions and Areas

Chapter 7 - Reserved

Chapter 8 - Reserved

Chapter 9 - Reserved

Chapter 10 - Reserved

Chapter 11 - Reserved

Chapter 12 - Siting and Installation

Chapter 13 - Reserved

Chapter 14 - Reserved

Chapter 15 - Preparation for Use and Reshipment vii

4. USE OF THIS MANUAL.

The General Equipment manual is used to familiarize the reader with the navigational set, its configuration and size, as well as providing a short general description of each system/subsystem installed in the equipment. A Table of Contents listing each chapter title and major subject heading, a List of Illustrations containing title and figure number of each illustration, and a List of Tables containing title and table number of each table are located in the front of the manual.

5. USE OF SHALL, SHOULD, MAY AND WILL.

The words shall, should, may, and will have the following meanings in this manual:

Shall is used to express a provision that is mandatory.

Should and may are used to express a provision that is nonmandatory.

Will is used to express a declaration of purpose.

6. WARNINGS, CAUTIONS, AND NOTES.

Warnings and cautions precede the text and follow the paragraph headings to which they apply. Notes may precede or follow applicable text depending upon the material to be highlighted. When a warning, caution, or note consists of two or more paragraphs, the heading WARNING, CAUTION, or NOTE is not repeated above each paragraph. Warnings, cautions, and notes are short and concise statements used to emphasize important or critical data. Warnings and cautions state the hazard and result or reason unless obvious.

Following are the definitions and examples of a warning, caution, and note:

WARNING: An operating or maintenance procedure, practice, condition, statement, etc., which, if not strictly observed, could result in injury to or death of personnel.

Electrical power shall not be connected or applied to the equipment. Failure to comply may cause injury to personnel and damage to the equipment.

CAUTION: An operating or maintenance procedure, practice, condition, statement, etc., which, if not strictly observed, could result in damage to or destruction of equipment or loss of mission effectiveness.

Use clean soft cloth, turning frequently for a faster, better finish. To prevent damage, discard when used or contaminated with any abrasive material.

NOTE: An essential operating or maintenance procedure, condition or statement, which must be highlighted.

NOTE

Polish one access panel at a time to prevent streaking by dried polish.

7. CHANGE RECOMMENDATIONS.

Recommendations concerning changes to this manual shall be submitted in accordance with T.O. 00-5-1.

viii

8. NONSTANDARD ABBREVIATIONS.

Abbreviations used in this manual conform to MIL-STD-12D, except for the following nonstandard abbreviations:

CPIN - Computer Program Identification Number

DAPS - Data Acquisition Processing System

FI - Fault Isolation

GE - General Equipment

GS - General System

JG - Job Guide

LRU - Line Replaceable Unit

PC - Personal Computer

RMWC - Remote Maintenance Work Center

SD - Schematic Diagrams

1-1

CHAPTER 1

ORGANIZATIONAL MAINTENANCE MANUAL SET

1.1 MAINTENANCE MANUAL SET ARRANGEMENT.

The maintenance manual set is divided into general and specific coverage of the equipment and systems to provide usable and complete maintenance at the organizational level. The General Equipment manual will serve to indoctrinate and familiarize maintenance personnel with the equipment and system. System maintenance personnel can improve their knowledge of the system by using the General System manual, and by using the step-by-step procedural instructions found in the Job Guide manual. The manual set is divided as set forth in the following paragraphs.

1.1.1 General Equipment Manual. The General Equipment (GE) manual provides an overview of the organizational maintenance manual set, explains the interrelation of the technical order/numbering system between manuals, provides an overall equipment description with a summary of all systems and subsystems, and presents general information on ground handling and servicing of the equipment. The manual is arranged in chapters, each of which addresses one or more of the above subjects. The manual also contains maintenance instructions that are general in nature (applicable to more than one system) and not suitable for job guide format.

The manual is used for maintenance personnel to gain a general knowledge and understanding of the overall equipment and systems.

1.1.2 General System Manual. The General System (GS) manual provides detailed system, subsystem, and sub-subsystem description, theory of operation, and maintenance support information not suitable for job guide format. Each manual is arranged in sections with system/subsystem coverage aligned to agree with Job Guide manual coverage. The manual presents the purpose, type, main features, and supporting data for the item being covered. Additionally, each manual contains a listing of support equipment, special tools, and a listing of supplies (consumables) applicable to the system covered.

1.1.3 Job Guide Manual. The Job Guide (JG) manual provides complete start-to-finish maintenance instructions for technicians performing maintenance functions on specific items. The instructions include removal and installation procedures and operational checkouts, alignment, adjustment, and calibration procedures. The JG manual contains removal and installation procedures and other subsystem/sub-subsystem level operational checkout, adjustment, and alignment procedures. Input conditions and follow-on maintenance entries for multitask functions are coded, in parentheses, to indicate the last digit(s) of the paragraph number(s) affected.

This code appears at the beginning of the entry. When necessary, due to multi task functions, the support equipment and supplies (consumables) under input conditions are coded 1, 2, 3, etc. The codes are used to stipulate equipment and supply usage. For example, code (1) indicates usage when performing the first task, and code (1, 3) indicates usage when performing the first and third tasks. Uncoded items are used in all tasks. Fault Isolation manual codes are shown in parentheses following the appropriate procedural step RESULT statement.

1.1.4 Fault Isolation Manual. The Fault Isolation (FI) manual is one of a set or manuals providing organizational maintenance instructions for the equipment. The FI manual is used in conjunction with JG manual.

The FI manual provides fault identification, description, and isolation procedures for the system.

1.1.4.1 Fault system malfunctions are those that conform to the following considerations:

a. Faults which are detectable when equipment is not operating shall be covered.

b. Faults which are observed while the equipment is operating shall be covered.

c. Faults shall not be covered if they require the use of support equipment.

d. In determining what faults are observable, it shall be assumed that the equipment is in a normal operational condition and that all pre-operation conditions have been met.

1-2

1.1.4.2 The FI manual provides technical information required to fault isolate a detected fault within the system.

Each fault isolation procedure terminates with fault correction or reference to a schematic diagram.

1.1.4.3 The system failure information contained in the manual is based upon malfunction analysis of equipment prior to delivery. Failure information gained from experience will be added to the FI manual as the information becomes available.

NOTE

The effectiveness of the FI manual after initial distribution to the user, to a large extent, is dependent upon operation and maintenance personnel who are active participants in the program and who are actively using the FI manual.

1.1.4.4 The fault diagnostic logic information appears in the body of the page in blockflow form. This form identifies the fault as well as relevant conditions leading to a specific eleven-character numeric-alphanumeric code.

1.1.4.5 The FI manual provides the conditions existing at the time the fault occurred and/or, when applicable, a cross-reference listing from self-test degree of severity and test number failed to a fault code. The user may follow the known conditions flow ending at the right side of the page to obtain the fault code. When a fault code has been established from the JG manual, fault identification and description is not provided.

As an example, a complete fault code would appear on a fault identification page as follows:

33-26-100-C1ZZZ

The fault code elements are broken down as follows:

33 - 26 - 100 - C1ZZZ

Fault Identifier

Sub-subsystem:

Power Supply Control

Subsystem:

Power Supply

System:

TACAN

Navigation Set

The first and second digits are the system numbers.

The third and fourth digits are the subsystem numbers.

The fifth, sixth, and seventh digits are the sub-subsystem numbers representing the appropriate Line

Replaceable Unit (LRU). The number is assigned for various drawer assemblies in the subsystem.

The eighth through the twelfth digits are used to identify a specific fault with a system/subsystem/sub-subsystem.

1.1.4.6 Access and locator data provide the means and location for gaining access to components except where obvious. This information is provided in either illustrated, written, or a combination of the two forms and immediately follows the fault identification and description page. A locator view of the access door or panel for

1-3 access to circuit breaker panels, identified on the fault identification and description page(s) when applicable, is included in the access and locator data.

1.1.4.7 The user will find the fault isolation procedure for the required fault code on the appropriate fault isolation procedure flow chart. The fault code is followed by a series of action instructions contained in rectangular blocks with the monitored results of the actions outside of the block. These actions terminate with instructions for further fault analysis or repair. The action blocks also contain any required reference to locator data, or job guide functions in parenthesis.

a. When identified faults have identical fault isolation procedures but are not in alphabetical sequence, the corrective action block refers to the fault code that has the isolation procedure (i.e., REFER TO FAULT

CODE 33-26-100 A1ZZZ).

b. When supplemental data is required to support fault isolation procedures, additional information is provided in the form of tables and/or supporting illustrations.

1.1.5 Schematic Diagrams Manual. The Schematic Diagrams (SD) manual provides schematic diagrams in sufficient detail to allow maintenance personnel to understand the troubleshooting process and system operation and also to assist in establishing troubleshooting procedures for faults not eliminated through use of the fault isolation procedures.

1.1.6 Reference Designator. The reference designator is the identifier assigned to the following types of components found on a sub-subsystem assembly: relay matrices, relays, panels, circuit breakers, connectors, terminal strips, actuators, switches, sensors, pumps, valves, instruments, etc. The designator is composed of the functional system number, subsystem number, sub-subsystem number, equipment class letters, and unit number identifier (e.g., 33-05-100 TB1 identifies TACAN system 33, transponder group subsystem 05, EMI filter sub-subsystem 100, terminal board TB1). The same reference designator is used throughout the organizational maintenance manual set to identify the same component parts; therefore, the number is found in the FI, JG, and SD manuals.

1.1.7 Illustrated Parts Breakdown. The Illustrated Parts Breakdown (IPB) manual is sectionalized to coincide with the organizational maintenance manual set. The manual is arranged as follows:

Chapter 1 IPB Introduction

Chapter 2 IPB Maintenance Parts List

Chapter 3 IPB Numerical Index

1.1.8 Maintenance Manual Set Technical Order Numbering System. The numbering system illustrated is utilized to provide easy recognition of the different types of manuals that make up the maintenance manual set:

31R4-2FRN45-2-33GE-1

Volume Number

General Equipment Manual

System Number

Series Number

System Designation

1-4

The following lists of manuals are part of this organizational maintenance manual set and supply complete TACAN Navigational Set information:

31R4-2FRN45-2-33GE-1 General Equipment Manual 31R4-2FRN45-2-33GS-1 General System Manual 31R4-2FRN45-2-33FI-1 Fault Isolation Manual 31R4-2FRN45-2-33JG-1 Job Guide Manual 31R4-2FRN45-2-33SD-1 Schematic Diagrams Manual 31R4-2FRN45-4-33PL-1 Illustrated Parts Breakdown Manual

1.1.9 System/Subsystem/Sub-Subsystem Numbering System. The numbering system used to identify organizational maintenance manuals provides a means of dividing and identifying data into system, subsystem, and sub-subsystems. Using the TACAN power supply control as an example, the system/subsystem/sub-subsystem number is 33-26-100.

The first and second digits are the system number, which represents system 33 (TACAN). The third and fourth digits are the subsystem number, which represent subsystem 26 (power supply). The fifth, sixth, and seventh number digits are the sub-subsystem numbers, which represent sub-subsystem 100 (control).

33-26-100

Sub-subsystem:

Power Supply Contro Subsystem:

Power Supply System: TACAN

1.1.10 Related Technical Manuals. Table 1-1 lists all technical manuals associated with the TACAN Navigational Set.

Table 1-1. Related Technical Manuals

Equipment Nomenclature

Title

Publication T.O.

Number

Transponder Group

OX-66(V)/FRN-45

TACAN Transponder Group Operation and Maintenance Instruction

31R4-2FRN45-2-33JG-1

and Control Indicator

C-11259/FRN

Organizational Maintenance Schematic Diagrams

31R4-2FRN45-2-33SD-1

Organizational Maintenance Illustrated Parts Breakdown

31R4-2FRN45-4-33PL-1

Preventive Maintenance Work Card Set, TACAN Transponder Group and Control Indicator

31R4-2FRN45-6WC-1

Organizational Maintenance Fault Isolation 31R4-2FRN45-2-33FI-1

Organizational Maintenance General Equipment Description

31R4-2FRN45-2-33GE-1

Organizational Maintenance General System 31R4-2FRN45-2-33GS-1

Antenna Group

OE-537/FRN

Operation and Maintenance Instructions with Illustrated Parts Breakdown

31R4-2FRN-41

2-1/(2-2 blank)

CHAPTER 2

TCTO INCORPORATION RECORD

2.1 TCTO HISTORICAL RECORD.

The following chart will identify all the TCTOs that are incorporated into the maintenance manual set. The chart is self-explanatory and is arranged in TCTO number sequence.

TCTO Number Title TCTO Date

31R4-2-509 Modification to Install Limited Transmitter Engineering Change Proposal (ECP-27), Power Conversion Engineering Change Proposal (ECP-3O), Power Jack Engineering Change Proposal (ECP-31), and On Request Mode Engineering Change Proposal (ECP-32) for AN/FRN-45 TACAN Navigational Set

1 Nov 90

31R4-2-510 Modification to Install 700 Watt Test Point Engineering Change Proposal (ECP-34) for AN/FRN-45 TACAN Navigational Set

1 Nov 90

31R4-2-511 Modification to Install Audio Engineering Change Proposal (ECP-22) and Power Monitor Display Assembly (Part of ECP-25) for AN/FRN-45 TACAN Navigational Set

1 Nov 90

31R4-2FRN45-501 Modification to Install Burst/Ident Sync Generator Engineering Change Proposal (ECP-43) for AN/FRN-45 TACAN Navigational Set

1 Apr 97

31R4-2FRN45-502 Modification to Install Front Panel Test Points on the AN/FRN-45 TACAN Navigational Set

16 Apr 98

31R4-2FRN45-503 Modification to Install a Second +65 Volt Path for 700- Watt Amplifiers on the AN/FRN-45 TACAN Navigational Set

1 Feb 99

31R4-2FRN45-504 Modification to Install Upgraded EPROMS in the RF Monitors for the AN/FRN-45 TACAN

1 May 99

31R4-2-FRN45-505 Inspection of Frequency Synthesizer Modules in AN/FRN- 45 TACAN Systems

1 Apr 02

31R4-2-FRN45-506 Inspection of TACAN Navigational Set AN/FRN-45 Power Supply, Part Number 105324

21 May 02

31R4-2FRN45-507 Modification to replace FCPU with Personal Computer 1 Sep 03

3-1

CHAPTER 3

EQUIPMENT DESCRIPTION

3.1 GENERAL DESCRIPTION.

The TACAN Navigational Set is a multi channel transponder whose purpose is to provide bearing and distance information of up to 200 nautical miles. Control of the system is possible via a Personal Computer located in both the environmentally controlled shelter and Remote Maintenance Work Center (RMWC). START/STOP and STATUS monitoring capabilities are provided by a control indicator, which is located in the Air Traffic Control (ATC) facility.

3.2 PHYSICAL DESCRIPTION.

The TACAN Navigational Set consists of a complete Tactical Air Navigation (TACAN) system. The transponder group is housed in an environmentally controlled shelter and the antenna is mounted outside the shelter (see Figure 3-1). Control of the system is possible via PCs located in both the shelter and RMWC, or from a control indicator located in the ATC facility. Refer to Table 3-1 for capabilities and limitations.

3.2.1 TACAN Shelter. A typical shelter consists of an approximately 27 foot by 15 foot (8.2 meters by 4.6 meters) cement or wood enclosure which includes the following equipment. Refer to Table 3-2 for capabilities and limitations.

3.2.1.1 Transponder Group (33-05-000). (See Figure 3-2) The transponder group provides an enclosure for each of the slide-mounted drawers. The top rear panel of the cabinet is a bulkhead for the following connections.

RF input/output, north and auxiliary trigger pulse inputs (not used), RF sample 2J2, status/trigger/control (OE- 537/FRN Antenna Group) and PC interface. The bottom portion of the rear panel houses a detachable connector plate for AC power input access. Two terminal blocks are on the left interior side panel; one is for remote communication and fiber optic signal interface and the other is for AC and DC power connections. The front bottom panel accommodates a grounding type duplex convenience outlet and an accessory equipment circuit breaker.

3.2.1.1.1 Power supply (33-26-000). (See Figure 3-3). The power supply is contained in a slide-mounted aluminum drawer, 9-1/4 inches (23.5 cm) high, which permits easy access for maintenance, testing, and adjustments. All inputs and outputs are on the rear panel of the supply. The printed circuit board is mounted in a card bay with edge guides. The plug-in board is a dual-sided printed circuit with plated-through holes and keyed 48-pin connector.

3.2.1.1.2 Transponder (33-35-000). (See Figure 3-4). The transponder is housed in a 10-1/2 inch (26.7 cm) high aluminum drawer-type chassis, which fits into the transponder group equipment rack. Retractable locking slides and handles provide access to the chassis interior. Printed circuit boards are mounted in a card bay with edge guides. The plug-in boards are dual-sided printed circuits with plated-through holes and keyed 48-pin and 72-pin connectors. Test points and adjustable components are located at the top of each board to allow field-service troubleshooting and alignment with boards in place. Card ejectors provide ease of board removal. The remainder of the assemblies are easily replaced modules held in place by quick disconnect fasteners and have multi-pin connectors. Interconnecting cables are of sufficient length to allow access to modules for maintenance.

Extender cards stored inside the drawer may be used to extend plug-in cards for maintenance.

3.2.1.1.3 Radio Frequency Amplifier (RFA) (33-37-000). (See Figure 3-5). The RFA is housed in a 24-1/2 inch (62.2 cm) high aluminum drawer-type chassis, which fits into the standard 19-inch (48.3 cm) transponder group equipment rack. Retractable locking slides and handles provide access to the RFA chassis interior. All input and output connectors are on the chassis rear panel. The eight identical 700 watt amplifiers are plug-in type and may be replaced without extending the chassis. They are held in place by two thumbscrew fasteners. Self-aligning, quick-disconnect cable connectors provide video and RF connections to the 700 watt amplifiers.

3-2

Figure 3-1. Typical TACAN Facility and Equipment Locations.

3-3

Table 3-1. TACAN Navigational System Capabilities and Limitations

CHARACTERISTICS SPECIFICATIONS

ENVIRONMENTAL

Temperature 0°C to 49°C (32°F to 120°F) (normal operation of entire TACAN facility)

-40°C to 65°C (-40°F to 149°F) (emergency service of transponder group only)

Humidity Up to 95%, with no condensation

Wind and ice 100 mph (160.9 km per hour) and one inch (2.54 cm) of ice load (antenna only)

Altitude Sea level to 9000 ft. (2.74 km)

Thermal dissipation 4600 BTU/hour (transponder group)

The PC, printer, and control indicator have negligible thermal dissipation

TRANSMITTER

Power output 3.0 kw peak

Channel capacity 126 channels (X mode) and 126 channels (Y mode) using broadband antenna

Frequency range 962 MHz to 1213 MHz

Spectrum 100mw at ± 0.8 MHz of output frequency

2 mw at ± 2.0 MHz of output frequency

Reference burst droop 2% maximum

Frequency stability ± 0.001%

Relay delay accuracy ± 0.25 µsec between -10 dBm and -50 dBm

Sensitivity -94 dBm (typical)

Traffic capacity 100 aircraft (typical)

Adjacent channel rejection 84 dB

Image rejection 75 dB

IF frequency rejection 80 dB

Echo suppression Long distance/short distance

Frequency 962 MHz to 1213 MHz

MONITORED FAULT THRESHOLDS

Reply delay Fault limit: ± 0.3 to 0.5 µsec from nominal

Pulse spacing Fault limit: ± 0.3 to 0.5 µsec from nominal

Efficiency Fault limit: Adjustable from 50% to 70% within ± 5% accuracy

Output pulse rate Fault: 2700 ppps ± 91 to ± 149 ppps

No Fault: 2700 ppps ± 90 ppps

3-4

MONITORED FAULT THRESHOLDS - Continued

Identification Fault: 1350 Hz absent or continuous

No Fault: 1350 Hz keyed

Power output Fault limit: Adjustable from 0w to 3000w with ± 1 dB accuracy

North reference burst Count Fault limit: ± 1 count

Spacing Fault limit: 800 ns.

Auxiliary reference burst Count Fault limit: ± 1 count

Spacing Fault limit: 800 ns.

Antenna SCAN rate Fault: 900rpm ± 1.8 rpm

No Fault: less than ± 1.6 rpm from 900 rpm

DISTANCE AND BEARING CAPABILITIES

Bearing and Distance 200 NM (370.6 KM) Line of sight (LOS)

Distance (DME) 100 Aircraft

INPUT POWER REQUIREMENTS

Commercial Power 120 VAC, ± 10%; 50 ± 3 Hz/60 ± 3 Hz; 3 wires

Uninterruptible Power Supply 8 KVA; 60 Hz

Table 3-2. Transponder System Capabilities and Limitations

CHARACTERISTICS SPECIFICATIONS

TRANSPONDER GROUP

Drawer mounting provisions Capable of individual slide mounting of all TACAN equipment drawers

Rack mounting provisions Mounting holes for securing to shelter floor

Coax connector inputs Mate to existing antenna group cables as follows:

a. 2J2 RF Sample Test Jack

b. RF Input Cable

External cabling access AC main power terminates at the terminal block. OE-537/FRN Antenna Control/Triggers/Status interface provided by D-type connectors mounted on rear panel.

Environmental conditions

Storage/Non-operating temperature -40°C to +68°C (-40°F to +155°F)

Normal operating temperature -0°C to +49°C (+32°F to +120°F)

Table 3-1. TACAN Navigational System Capabilities and Limitations - Continued.

Change 1 3-5

TRANSPONDER GROUP - Continued

Emergency operating temperature -40°C to +65°C (-40°F to +149°F)

Humidity 95% maximum (no condensation)

Storage/non-operating altitude Sea level to 40000 ft. (12.2 km)

Operating altitude Sea level to 9000 ft. (2.74 km)

Salt/Fog Per MIL-STD-810

Fungus Per MIL-STD-810

EMI Per MIL-STD-461

Minimum full power output 3000w peak

Maximum full power output 3500w peak

Power select range 1500w to 3000w (stability: ± 0.25 dB)

RF pulse spectrum (in 0.5 MHz band) An average of -48 dB or better (example -49) at ± 0.8 MHz from output frequency

An average of -65 dB or better (example -66) at ± 2.0 MHz from output frequency

RF AMPLIFIER / TRANSPONDER

Receiver performance

Receive frequency 1025 MHz to 1150 MHz (1 MHz channel spacing)

Decoder acceptance 12 µs ± 0.5 µs pulse pair spacing (“X” mode)

30 µs ± 0.5 µs pulse pair spacing (“Y” mode)

Receiver dead time 50 µs to 150 µs (adjustable)

Long distance echo suppression Desensitization: 3 dB ± 2 dB above level of direct path

Triggering range: -80 dBm to -10 dBm (adjustable)

Duration: 50 µs to 350 µs (adjustable)

Sensitivity -94 dBm (at 70% efficiency referenced to cabinet antenna connector)

Sensitivity setting -60 dBm to -94 dBm (adjustable)

Variation with interrogation loading 1 dB max

Adjacent channel rejection 84 dB min

Desensitization by CW (10 dB below threshold)

2 dB max

Table 3-2. Transponder System Capabilities and Limitations - Continued.

3-6

RF AMPLIFIER / TRANSPONDER - Continued

Desensitization by high rep rate (37000 single pulse 10 dB below threshold)

0.5 dB sensitivity degradation 3% reply efficiency

Image rejection 75 dB min

IF frequency rejection 80 dB min

Automatic gain reduction 50 dB min for squitter/Distance Measuring Equipment (DME) output pulse rate exceeding 2700 ppps ± 90 ppps

Transponder reply

Squitter pulse generation Distribution: random

Spacing min: 60 µs

Unallowed spacing: 730 µs to 750 µs

Count min: 2610 ppps

Count max: 2790 ppps

Priority of transmission 1st: North and auxiliary reference burst pulse pairs

2nd: Identity and equalizer pulse pairs

3rd: Distance reply pulse pairs

4th: Squitter pulse pairs

Pulse coding 12 µs ± 0.1 µs pulse pair spacing (“X” mode)

30 µs ± 0.1 µs pulse pair spacing (“Y” mode)

Pulse characteristics

Rise time 1.5 µs to 3.0 µs

Fall time 1.5 µs to 3.0 µs

Pulse width 3.5 µs ± 0.5 µs

Reply delay 35 µs to 62 µs (adjustable)

Identification signals and keying Rep rate: 1350 Hz nominal

Equalization spacing: 100 µs ± 10 µs

Occurrence after preceding azimuth group: 740 µs ± 50 µs

Groups between azimuth: nine

Azimuth groups

North reference 12 pulse pairs (12 µs ± 0.1 µs spacing) spaced 30 µs ± 0.1 µs apart (“X” mode)

3-7

RF AMPLIFIER / TRANSPONDER - Continued

13 single pulses spaced 30 µs ± 0.1 µs apart (“Y” mode)

Auxiliary reference Six groups of 12 µs ± 0.1 µs pairs spaced 24 µs apart (“X” mode)

13 single pulses spaced 15 µs ± 0.1 µs apart (“Y” mode)

Reference group timing One north group and eight auxiliary every 66.66 ms

Power output 400w peak typical…