IFR ATC-601-2 Operation Manual

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RF I/O

POWER

1/2 WATT

MAX

AUTO PWR TEST

SELECT SLEW

ATC-601

RUN

TEST STOP

SETUP

100-120VAC 60Hz 220-240VAC 50Hz

INTERR REPLY

REPLY VIDEO

SELF TEST

CHARGE

SYNCMONITOR

COMM

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0.5A @ 220 VAC TYPE F

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Page 2

OPERATION MANUAL

RAMP TEST SET

ATC-601-2

PUBLISHED BY

IFR AMERICAS, INC.

COPYRIGHT  IFR Americas, Inc. 1999 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise without the prior permission of the publisher.

10200 West York / Wichita, Kansas 67215 U.S.A. / (316) 522-4981 / FAX (316) 524-2623

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OPERATION MANUAL ATC-601

Cable Statement:

A double shielded and properly terminated external interface cable must be used with this equipment when interfacing with the COMM Connector.

Nomenclature Statement:

In this manual the ATC-601, ATC-601 Test Set, ATC-601 Ramp Test Set or Test Set refers to the ATC-601-2 Ramp Test Set.

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OPERATION MANUAL ATC-601

SAFETY FIRST: TO ALL OPERATIONS PERSONNEL

REFER ALL SERVICI NG OF UNIT TO QUALIFIED TECHNICAL PE RSONNEL. THIS UNIT CONTAINS NO OPERATOR SERVICEABLE PARTS.

WARNING: USING THIS EQUIPM ENT IN A MANNER NOT SPECIFIED BY THE ACCOMPANYING

DOCUMENTATION MAY IMPAIR THE SAFETY PROTECTION PROVIDED BY THE EQUIPMENT.

CASE, COVER OR PANEL REM OVAL

Removing the Chassis As sembly from the Case Assembl y exposes the operator to electrical haz ards that can result in electric al shock or equipment damage. Do not operate this Test Set with the Chassis As sembly removed from the Case Ass embly.

SAFETY IDENTIF ICATION IN TECHNICAL MANUAL

This manual uses the foll owing terms to draw attention to possible s afety hazards, that may exi st when operating this equipment.

CAUTION: THIS TERM IDENTIFIES CONDITIONS OR ACTIVITIES THAT, IF IGNORED, CAN RESULT IN

EQUIPMENT OR PROPERTY DAMAGE (E.G., FIRE).

WARNING: THIS TERM IDENTI FIES CONDITIONS OR ACTIVITI ES THAT, IF IGNORED, CAN RESULT IN

PERSONAL INJURY OR DEATH.

SAFETY SYMBOLS IN MANUALS AND ON UNITS

CAUTION: Refer to accompany ing documents.

AC OR DC TERMINAL: Terminal that may supply or be supplied with ac or dc volt age.

DC TERMINAL: Terminal that m ay supply or be supplied with dc voltage.

AC TERMINAL: Terminal that m ay supply or be supplied with ac or alternating v oltage.

SWITCH ON/OFF (Push-Push): A C line power to the device is connected ON or disc onnected OFF.

EQUIPMENT GROUNDING PRE CAUTION

Improper grounding of equipment can result in electrical shock.

USE OF PROBES

Check the specific ations for the maximum voltage, c urrent and power ratings of any connector on the Test Set before connecting it wi th a probe from a terminal device. Be sure t he terminal device performs within these specificat ions before using it for measurement, to prev ent electrical shock or damage to t he equipment.

POWER CORDS

Power cords must not be fray ed, broken nor expose bare wiring when operating this equipment .

USE RECOMMENDED FUSES ONLY

Use only fuses spec ifically recommended for the equipment at the specified current and voltage ratings .

INTERNAL BATTERY

This unit contains a Seal ed-Lead Battery, serviceable only by a qual ified technician. CAUTION: SIGNAL GENERATORS CA N BE A SOURCE OF ELECTROMAGNETIC I NTERFERENCE (EMI) TO

COMMUNICATION RECEIV ERS. SOME TRANSMITTE D SIGNALS CAN CAUSE DISRUPTI ON AND INTERFERENCE TO COMMUNICATION SERVICES OUT TO A DISTANCE OF SEVERAL MILES. USERS OF THI S EQUIPMENT SHOULD SCRUTINIZE A NY OPERATION THAT RESULTS IN RADIATION OF A SIGNAL (DIRECTLY OR INDIRECTLY) AND SHOULD TAKE NECESSARY PRECAUTIONS TO AVOID POTENTIAL COMMUNICATION INTERFERENCE PROBLEMS.

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OPERATION MANUAL ATC-601

RECORD OF REVISIONS

REV

NO.

ISSUE

DATE

01 3-1-99

DATE

INSERTED BY

REV

NO.

ISSUE

DATE

INSERTED BY

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LIST OF EFFECTIVE PAGES

CHAPTER/SECTION/SUBJECT PAGE DATE Title / Copyright Page Mar 1/99

Statements Jun 1/97 Safety Page Jun 1/97 Record of Revisions Mar 1/99 List of Effective Pages 1 Mar 1/99 List of Effective Pages 2 Jun 1/97 Table of Contents 1 Jun 1/97 Table of Contents 2 Mar 1/99 Introduction 1 through 2 Jun 1/97 1-Table of Contents 1 through 2 Jun 1/97 1-List of Illustrations 1 through 2 Jun 1/97 1-List of Tables 1 through 2 Jun 1/97 1-1-1 1 through 2 Jun 1/97 1-2-1 1 through 4 Jun 1/97 1-2-2 1 through 6 Jun 1/97 1-2-3 1 through 6 Jun 1/97 1-2-4 1 through 28 Jun 1/97 1-2-5 1 through 18 Jun 1/97 1-3-1 1 through 4 Jun 1/97 1-3-1 5 Mar 1/99 1-3-1 6 Jun 1/97 1-4-1 1 through 2 Jun 1/97 1-5-1 1 through 2 Jun 1/97 Appendix A 1 through 2 Jun 1/97 Appendix B 1 through 18 Jun 1/97 Appendix C 1 through 2 Jun 1/97 Appendix D 1 through 2 Jun 1/97 Appendix E 1 through 4 Jun 1/97 Index 1 Jun 1/97 Index 2 Mar 1/99 Battery/Voltage Instructions Title Page Jun 1/97 Battery/Voltage Instructions Warning Page Jun 1/97 Battery/Voltage Instructions Caution Page Jun 1/97 Battery/Voltage Instructions 1 through 2 Jun 1/97

LIST OF EFFECTIVE PAGES

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OPERATION MANUAL ATC-601

TABLE OF CONTENTS

Title Chapter/Section

Title Page Copyright Page Statements Safety Page Record of Revisions List of Effective Pages Table of Contents Introduction

Chapter 1

Section 1 - Description 1-1 Section 2 - Operation 1-2 Section 3 - Specifications 1-3 Section 4 - Shipping 1-4 Section 5 - Storage 1-5

Appendix A - Connector Pin-Out Tables Appendix B - Signal Formats Appendix C - Auxiliary Equipment Appendix D - Metric/British Imperial Conversion Table

with Nautical Distance Conversions

Appendix E - Abbreviations Index Battery/Voltage Instructions

TABLE OF CONTENTS

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TABLE OF CONTENTS

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OPERATION MANUAL ATC-601

INTRODUCTION - ATC-601 RAMP TEST SET

This manual contains ATC-601 operating instructions for ramp testing ATCRBS and Mode S Transponders. It is strongly recommended that personnel be thoroughly familiar with the contents of this manual before attempting to operate this equipment.

Refer all servicing of unit to qualified technical personnel. ORGANIZATION This manual is divided into the following Chapters and Sections: CHAPTER 1 - OPERATION

Section 1 - DESCRIPT ION (physical description of the ATC-601) Section 2 - O PERATION (installation; description of controls, connectors and

indicators; performance evaluation; general operating procedures and

remote operation) Section 3 - SPECIF ICATIONS Section 4 - SH IPPING Section 5 - ST ORAGE

INTRODUCTION

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INTRODUCTION

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OPERATION MANUAL ATC-601

CHAPTER ONE

ATC-601 TEST SYSTEM

OPERATION MANUAL

TABLE OF CONTENTS

Title Chapter/Section/Subject Page

SECTION 1 - DESCRIPTION 1-1

1. General Description and Capabilities 1-1-1 1

1.1 Description 1-1-1 1

1.2 Functional Capabilities 1-1-1 1

SECTION 2 - OPERATION 1-2

1. Installation 1-2-1 1

1.1 General 1-2-1 1

1.2 Battery Operation 1-2-1 1

1.3 Battery Charging 1-2-1 1

1.4 Safety Precautions 1-2-1 1

1.4.1 Complying with Instructions 1-2-1 1

1.4.2 Grounding Power Cord 1-2-1 1

1.4.3 Operating Safety 1-2-1 1

1.4.4 CAUTION and WARNING Labels 1-2-1 2

1.5 AC Power Requirements 1-2-1 2

1.6 FAA Requirements 1-2-1 2

1.7 Battery Recharging 1-2-1 2

1.8 Bench Operation 1-2-1 3

1.9 External Cleaning 1-2- 1 3

2. Controls, Connectors And Indicators 1-2-2 2

2.1 Front Panel 1-2-2 4

2.2 Flat Antenna 1-2-2 6

3. Performance Evaluation 1-2-3 1

3.1 General 1-2-3 1

3.2 Self Test 1-2-3 1

3.3 Diagnostics 1-2-3 3

4. General Oper ating Procedures 1-2-4 1

4.1 General 1-2-4 1

4.2 Start-Up 1-2-4 1

4.3 Setup 1-2-4 2

4.3.1 Setup#1 Menu (Test Operation) 1-2-4 2

4.3.2 Setup#2 Menu (Remote Operation) 1-2-4 4

4.3.3 Setup#3 Menu (Memory Operation) 1-2-4 4

4.4 Auto Test 1-2-4 5

4.4.1 Description 1-2-4 5

4.4.2 Direct Connect Procedure 1-2-4 7

4.4.3 “Over the Air” Ground Test Procedure ( UUT

aircraft altitude reporting system ≤airfield altitude) 1-2-4 8

4.4.4 “Over the Air” Simulated Altitude Test Procedure (UUT aircraft altitude reporting system >airfield altitude [“pumped up”]) 1-2-4 8

1-TABLE OF CONTENTS

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Title Chapter/Section/Subject Page

4.5 Single Test 1-2-4 10

4.5.1 General Procedure 1-2-4 10

4.5.2 Single Test Definitions 1-2-4 11

4.6 Power Test 1-2-4 24

4.6.1 General 1-2-4 24

4.6.2 Procedure 1-2-4 24

5. Remote Operation 1-2-5 1

5.1 General 1-2-5 1

5.1.1 Operation 1- 2-5 1

5.1.2 Syntax 1-2-5 3

5.2 Commands 1-2-5 4

5.2.1 Nonspecific Commands 1-2-5 4

5.2.2 ATC-601 Specific Commands 1-2-5 6

5.2.3 TEST:ALL? and Data Dump Information 1-2-5 16

5.3 Recommended Test Procedures 1-2-5 17

5.3.1 General 1-2-5 17

5.3.2 Procedures 1-2-5 18

SECTION 3 - SPECIFICATIONS 1-3

1. ATC-601 Transponder Ramp Test Set Specifications 1-3-1 1

1.1 Signal Generator 1-3-1 1

1.2 Test Signals (Interrogations) 1-3-1 1

1.3 Pulse Characteristics (Measured at 50% Amplitude Points) 1-3-1 1

1.4 UUT Measurements (Replies) 1- 3-1 3

1.5 Battery Operation 1-3-1 4

1.6 Power Requirements 1-3-1 4

1.7 Fuse Requirements 1-3-1 5

1.8 Safety 1-3-1 5

1.9 Operational Environmental Considerations 1-3-1 5

SECTION 4 - SHIPPING 1-4

1. Shipping Test Sets 1-4-1 1

1.1 Information 1-4-1 1

1.2 Repacking Procedure 1-4-1 1

SECTION 5 - STORAGE 1-5

1. Storing Test Sets 1-5-1 1

1-TABLE OF CONTENTS

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OPERATION MANUAL ATC-601

LIST OF ILLUSTRATIONS

Title Chapter/Section/Subject Page

Battery Recharging 1-2-1 3 ATC-601 Front Panel 1-2-2 2 Flat Antenna 1-2-2 6 Sample Self Test Screens 1-2-3 2 Sample Diagnostics Screen 1-2-3 3 Sample Start-Up Screen 1-2-4 1 Sample Setup#1 Menu Screens 1-2-4 2 ATC-601 Position Chart 1-2-4 3 Sample Setup#3 Menu Screen 1-2-4 4 Sample Auto Test Screens 1-2-4 9 Sample Reply Delay Test Screens 1-2-4 11 Sample Reply Jitter Test Screens 1-2-4 12 Sample ATCRBS Reply Test Screens 1-2-4 12 Sample SLS Level Test Screens 1-2-4 13 Sample ATCRBS Only All-Call Test Screens 1-2-4 13 Sample Mode S All-Call Test Screens 1-2-4 14 Sample Invalid Address Test Screens 1- 2-4 14 Sample SPR On/Off Test Screens 1-2-4 14 Sample Mode S UF0 Test Screens 1-2-4 15 Sample Mode S UF4 Test Screens 1-2-4 16 Sample Mode S UF5 Test Screens 1-2-4 17 Sample Mode S UF11 Test Screens 1-2-4 18 Sample Mode S UF16 Test Screens 1-2-4 19 Sample Mode S UF20 Test Screens 1-2-4 20 Sample Mode S UF21 Test Screens 1-2-4 21 Sample Squitter Test Screens 1-2-4 22 Sample Frequency Test Screens 1-2-4 22 Sample Diversity Test Screens 1-2-4 23 Sample MTL Difference Test Screens 1-2-4 23 Sample Power Test Screens 1-2-4 25 Suggested Layout to Reduce Multipath Errors 1-2-4 26 Ramp Testing 1-2-4 27 Sample Setup#2 Menu Screen 1-2-5 2 ATC-601 - Host Cable Connections (9-Pin) 1-2-5 2 ATC-601 - Host Cable Connections (25-Pin) 1-2-5 2 Repacking Procedure 1-4-1 2

1-LIST OF ILLUSTRATIONS

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1-LIST OF ILLUSTRATIONS

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OPERATION MANUAL ATC-601

LIST OF TABLES

Title Chapter/Section/Subject Page

Specified Fuse Ratings 1-2-1 2 Self Test Error Code Definitions 1-2-3 2 Diagnostics Signal Definitions 1-2-3 5 Screen Symbols Identification Chart 1-2-4 11 Command Syntax Punctuation 1-2-5 3 Nonspecific Commands 1- 2-5 4 Error Queue Numbers and Messages 1-2-5 5 Display Screens 1-2-5 5 ATC-601 Specific Commands 1-2-5 6

1-LIST OF TABLES

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1-LIST OF TABLES

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OPERATION MANUAL ATC-601

SECTION 1 - DESCRIPTION

1. GENERAL DESCRIPTION AND CAPABILITIES

1.1 DESCRIPTION

The ATC-601 Ramp Test Set is a ruggedized ramp tester designed for ease of use, portability, reliability and long service life. Power is derived from an internal battery. An ac input connection is provided for battery charging, bench operation or servicing use. Most accessories (Flat Antenna, Antenna Cable,

Operator’s Guide, ac Power Cable, Flexible Antenna, Antenna Shield and Fuse) are kept in the Storage Compartment (Case Assembly Lid). The Tripod is stored separately. Refer to Appendix C for description of accessories.

The ATC-601 Ramp Test Set provides PASSED/FAILED verification of ATCRBS and/or Mode S Transponder operation in a ramp environment. The ATC-601 is a ground or air interrogating simulator that transmits Modes A, C and S interrogations. The Test Set accurately analyzes reply pulses, provides reply pulse information and indicates failures to comply with accepted guidelines.

1.2 FUNCTIONAL CAPABILITIES

The ATC-601 has the following features and capabilities:

● Accurate measurements of transponder

transmitting frequency, output power and sensitivity.

● Ruggedized construction designed for

the conditions encountered in the ramp environment.

● Soft-press key controls for easy

operation.

● Reply pulse verification of delay, width,

spacing, format and content.

● Memory Storage for up to two sets of

test results plus latest test results ar e stored, indefinitely, until replaced with new test results.

● Built-In-Test (BIT) for confidence testing

and fault isolation.

● Ability to test a transponder in the

aircraft from a distance of up to 300 feet (91.4 meters).

● LCD Display with automatic light

sensing illumination control.

● RF I/O, Monitor, Reply Video and Sync

Pulse outputs for use in bench testing.

● Internal Battery allowing up to two hours

of operation before recharge.

● Automatic power shutdown after

approximately 15 minutes of non-use when ac power is not connected.

● Size and usability to allow one person

operation on the ramp.

● Serial remote operation (RS-232)

through COMM Connector when Option 1 is installed.

● Automatic Test Sequence mode for fast

and easy testing.

1-1-1

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1-1-1

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1. INSTALLATION

OPERATION MANUAL ATC-601

SECTION 2 - OPERATION

1.1 GENERAL

The ATC-601 is powered by an internal battery. The Test Set contains a battery charging circuit which enables the operator to recharge the battery when connected to ac power.

NOTE: The ATC-601 can operate

continuously on ac power for servicing and/or bench tests.

Refer to 1-2-2, Figure 2 for location of controls, connectors or indicators.

1.2 BATTERY OPERATION

The internal battery is equipped to power the ATC-601 for two hours of continuous use, after which time, the ATC-601 battery needs recharging. When executing the Self Test function, the DISPLAY indicates whether the battery is usable or in need of recharging.

NOTE: When battery is low during

operation, the ATC-601 shows on the left side of the top line and two small block characters on the left side, below the bottom line of the DISPLAY.

The ATC-601 contains an automatic timeout to conserve power. If a key is not pressed within a 15-minute time period, the Test Set shuts Off (only when using battery power).

1.3 BATTERY CHARGING

BAT

1.4 SAFETY PRECAUTIONS

The following safety precautions must be observed during installation and operation. IFR Systems, Inc. assumes no liability for failure to comply with any safety precaution outlined in this manual.

1.4.1 Complying with Instruct ions

Installation/operating personnel should not attempt to install or operate the ATC-601 without reading and complying with instructions contained in this manual. All procedures contained in this manual must be performed in exact sequence and manner described.

1.4.2 Grounding Power Cord WARNING: DO NOT USE A THREE-

PRONG TO TWO-PRONG ADAPTER PLUG. DOING SO CREATES A SHOCK HAZARD BETWEEN THE CHASSIS AND ELECTRICAL GROUND.

For ac operation, the power cord, equipped with standard three-prong plug, must be connected to a properly grounded threeprong receptacle. It is the customer’s responsibility to:

●

Have a qualified electrician check

receptacle(s) for proper grounding.

●

Replace any standard two-prong

receptacle(s) with properly grounded three-prong receptacle(s).

The battery charger operates whenever ac power is applied to the Test Set and the POWER Key is pressed Off. When charging, the battery reaches an 80% charge in approximately two hours. The battery should be charged every three months (minimum) or disconnected for long term inactive storage periods of more than six months.

1.4.3 Operating Safety

Due to potential for electrical shock within test equipment, the Chassis Assembly must not be removed from the Case Assembly. Battery/Voltage Instructions, component replacement and internal adjustments must only be performed by qualified service technicians.

1-2-1

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OPERATION MANUAL ATC-601

1.4.4 CAUTION and WARNING Labels

Exercise extreme care when performing operations preceded by a CAUTION or WARNING label. CAUTION labels appear where possibility of damage to equipment exists. WARNING labels denote conditions where bodily injury or death may result.

1.5 AC POWER REQUIREMENTS

The ATC-601 operates over a voltage range of 100 to 120 VAC at 60 Hz or 220 to 240 VAC at 50 Hz according to the internal Line Supply Switch setting (only serviceable by a qualified technician). Refer to Battery/Voltage Instructions.

The specified fuse ratings are listed in 1-2-1, Table 1.

CAUTION: FOR CONTINUOUS

PROTECTION AGAINST F IRE, REPLACE ONLY WITH FUSES OF THE SPECIFIED VOLTAGE AND CURRENT RATINGS.

INPUT VOLTAGE F1 AND F2 FUSES

100 to 120 VAC 1.0 A, 250 V

Fast Blo (Type F)

(IFR PN: 5106-4501-000)

(Bussman AGC1)

220 to 240 VAC 0.5 A, 250 V

Fast Blo (Type F)

(IFR PN: 5106-0000-016)

(Bussman AGC1/2)

Specified Fuse Ratings

Table 1

1.6 FAA REQUIREMENTS

The Federal Aviation Administration (FAA) requires procedures for eliminating the potential for interfering with TCASequipped aircraft during transponder testing. Problems arise when the transponder is operating with the aircraft on the ground and the automatic altitude reporting system "pumped up." Three methods of FAA compliance are: shielding transponder antenna(s), connecting the ATC-601 directly to the transponder under test and testing in an anechoic enclosure. The Antenna Shield provides a practical way of complying with the FAA requirement when a direct connection or anechoic enclosure is not available. Refer to Appendix C for Antenna Shield installation. Refer to 4.4.3 and 4.4.4 in 1-2-4 for testing transponder operation when using the Antenna Shield.

1.7 BATTERY RECHARGING

Refer to 1-2-1, Figure 1. STEP PROCEDURE

1. Verify FUSES are correct for normal operating voltage. Refer to 1.5 of 1-2-1.

2. Connect ac power cable between AC PWR Connector and normal operating voltage power source according to Test Set configuration. Refer to 1.5 of 1-2-1.

3. Verify DISPLAY is Off. If DISPLAY is On, press POWER Key.

4. Verify CHARGE Indicator illuminates red.

5. Allow two hours for battery charge or until CHARGE Indicator illuminates green.

NOTE: If the battery fails to accept a

charge and the ATC-601 Test Set does not operate on battery power, the battery, serviceable only by a qualified technician, requires replacement. Refer to Battery/Voltage Instructions.

1-2-1

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DO NOT TRANSMIT INTO ANTENNA TERMINAL

ANTENNA

RF I/O

1/2 WATT

OPERATION MANUAL ATC-601

CHARGE

INTERR REPLY

MAX

ATC-601

SYNCMONITOR

RED (CHARGING)

GREEN

COMM

REPLY VIDEO

(CHARGED)

SELF TEST

1.0A @ 120 VAC

0.5A @ 220 VAC TYPE F

POWER

AUTO PWR

RUN

TEST

TEST STOP

SELECT SLEW

100-120VAC 60Hz 220-240VAC 50Hz

SETUP

Battery Recharging

1.8 BENCH OPERATION

STEP PROCEDURE

1. Place transponder (unit under test [UUT]) into Standby.

2. Verify FUSES are correct for normal operating voltage. Refer to 1.5 of 1-2-1.

3. Connect ac power cable between AC PWR Connector and normal operating voltage power source according to Test Set configuration. Refer to 1.5 of 1-2-1.

4. Press POWER Key On and verify DISPLAY illuminates.

5. Press SETUP Key to enter Setup#1 Menu.

6. Set zero range using SELECT Keys to mover cursor and SLEW Keys to change TOP= and BOTTOM= to under RANGE column.

7. Verify ANTENNA Connector has 50 Ω load (Connector Cover) connected.

8. Connect UUT with TNC Cable to RF I/O Connector.

9. Switch UUT out of Standby.

AC PWR CONNECTOR

Figure 1

1.9 EXTERNAL CLEANING

The following procedure contains routine instructions for cleaning the outside of the Test Set.

CAUTION: DISCONNECT POWER FROM

STEP PROCEDURE

1. Clean front panel buttons and display face with soft lint-free cloth. If dirt is difficult to remove, dampen cloth with water and a mild liquid detergent.

2. Remove grease, fungus and ground-in dirt from surfaces with soft lint-free cloth dampened (not soaked) with isopropyl alcohol.

3. Remove dust and dirt from connectors

with soft-bristled brush.

4. Cover connectors, not in use, with suitable dust cover to prevent tarnishing of connector contacts.

5. Clean cables with soft lint-free cloth.

6. Paint exposed metal surface to avoid corrosion.

8107003

TEST SET TO AVOID POSSIBLE DAMAGE TO ELECTRONIC CIRCUITS.

1-2-1

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OPERATION MANUAL ATC-601

2. CONTROLS, CONNECTORS AND INDICATORS

1716

DO NOT TRANSMIT INTO ANTENNA TERMINAL

1/2 WATT

ANTENNA

RF I/O

MAX

ATC-601

AUTO PWR TEST

TEST STOP

RUN/

SETUP

INTERR REPLY

REPLY VIDEO

SELF

TEST

CHARGE

SYNCMONITOR

COMM

2019 1

1.0A @ 120 VAC

0.5A @ 220 VAC

SELECT SLEW

TYPE F

POWER

100-120VAC 60Hz 220-240VAC 50Hz

109876

8107001

ATC-601 Front Panel

Figure 2

1-2-2

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OPERATION MANUAL ATC-601

AC PWR Connector (J10050) ............ 7

ANTENNA Connector (J10057).......... 16

AUTO TEST Key.............................. 13

CHARGE Indicator ........................... 1

COMM Connector (J10053)............... 3

DISPLAY ........................................ 14

FUSES ........................................... 5

INTERR Indicator ............................ 18

MONITOR Connector (J10056).......... 19

POWER Key.................................... 11

PWR TEST Key ............................... 12

REPLY Indicator .............................. 20

REPLY VIDEO Connector (J10054) ... 17

RF I/O Connector (J10058)............... 15

RUN/STOP Key ............................... 9

SELECT Keys ................................. 10

SELF TEST Key .............................. 6

SETUP Key ..................................... 4

SLEW Keys ..................................... 8

SYNC Connector (J10055)................ 2

1-2-2

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2.1 FRONT PANEL

Refer to 1-2-2, Figure 2.

OPERATION MANUAL ATC-601

ITEM DESCRIPTION

1. CHARGE Indicator LED indicates the charger is active

(ac applied with Test Set Off). Red indicates when battery is charging and green indicates battery is more than 80% charged.

2. SYNC Connector (J10055) BNC type connector provides

Oscilloscope Sync. Long pulse goes from low to high before an interrogation and from high to low before an expected reply.

3. COMM Connector (J10053) LEMO type connector provides for

remote 4-line serial communication (with Option 1 installed) and includes the signals TRANSMIT, RECEIVE, DTR and CTS. The COMM Connector provides data dump output capability with or without Option 1 installed. Refer to COMM Connector Pin-out Table, Appendix A.

4. SETUP Key Enters Setup Menus onto the

DISPLAY.

5. FUSES

ITEM DESCRIPTION

7. AC PWR Connector (J10050) Provides the input for an external ac

power source (100 to 120 VAC at 60 Hz or 220 to 240 VAC at 50 Hz) for recharging the battery or operating the Test Set. The operating voltage range depends on the Line Supply Switch Setting, only serviceable by a qualified technician. Refer to Battery/Voltage Instructions.

8. SLEW Keys Used to:

●

Adjust values and parameters in

Setup Menus.

●

Select Signal Type in Diagnostics

screen.

●

Adjust values in Diagnostics

screen.

●

Select antenna to be tested in

Power Test.

Variable slew rates are available, depending on item being edited. Keeping SLEW Key pressed provides greater rate of change, in most instances, than pressing and releasing.

Provide safe operation with ac input power applied to the ATC-601. Refer to 1.5 of 1-2-1 for correct fuse size and type.

6. SELF TEST Key Enters Self Test screen onto the

DISPLAY.

9. RUN/STOP Key Starts or stops testing.

10. SELECT Keys Used to select:

●

Test to perform in Single Test.

●

Items to edit in Setup Menus.

●

Antenna to be tested in Power

Test.

●

Diagnostics screen menu from Self

Test screen.

1-2-2

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OPERATION MANUAL ATC-601

ITEM DESCRIPTION

11. POWER Key Applies power to the Test Set; push

) or push Off (O).

On ( NOTE: When operating on battery

power, an internal automatic time-out removes power from the Test Set following 15 minutes of no key activity.

12. PWR TEST Key Enters Power Test screen onto the

DISPLAY.

13. AUTO TEST Key Enters Auto Test screen onto the

DISPLAY.

14. DISPLAY LCD readout displays various test

screens.

15. RF I/O Connector (J10058) CAUTION: MAXIMUM INPUT

POWER MUST NOT EXCEED +59 dBm (800 W).

TNC type connector provides for RF input and output when directly connected with the UUT (Direct Connect).

ITEM DESCRIPTION

16. ANTENNA Connector (J10057) CAUTION: DO NOT TRANSMIT

DIRECTLY INTO ANTENNA TERMINAL. MAXIMUM OVER-THEAIR INPUT POWER MUST NOT EXCEED 1/2 W.

BNC type connector is used with the Test Set Antenna (Flat Antenna or Flexible Antenna). Over-the-air testing of the UUT is accomplished through this connector. The connector cover, when attached, provides the 50 Ω load required when connecting the RF I/O Connector to the UUT (Direct Connect) or running the Self Test.

17. REPLY VIDEO Connector (J10054) BNC type connector provides

demodulated (detected) reply (only when direct connection with UUT is used) for use with an Oscilloscope.

18. INTERR Indicator Illuminates when Test Set is

generating an interrogation signal.

19. MONITOR Connector ( J10056) BNC type connector provides

interrogation and reply pulses clipped at 50% amplitude point to preserve pulse shape.

20. REPLY Indicator Illuminates when the Test Set

receives a valid reply signal.

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2.2 FLAT ANTENNA

Refer to 1-2-2, Figures 2 and 3. ITEM DESCRIPTION

21. ANTENNA PUSH BUTTON Switch Starts or stops testing, same as the

RUN/STOP Key.

22. FLAT ANTENNA Connector (J29001) BNC type connector is used to

connect Flat Antenna to ATC-601 Test Set.

OPERATION MANUAL ATC-601

TIO

. P

Flat Antenna

T A

T, D

T D

T A

T G

TIN

T A

(1.8 M

Figure 3

S/N

GAIN 1030MHz dBi

GAIN 1090MHz dBi

C N I , S

M E

T S Y S

L, M

6 F

8107008

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3. PERFORMANCE EVALUATION

OPERATION MANUAL ATC-601

3.1 GENERAL

The ATC-601 is equipped with a Self Test for quick performance evaluation and Diagnostics for signal verification. Self Test checks the Digital Module (Digital IF PC Board Assembly and Front Panel Pulse PC Board Assembly functions), Power Supply/Battery and RF Module (RF Assembly functions) for operational capability. Diagnostics are used to verify the ATC-601 is transmitting correct interrogations and accurately decoding replies.

Refer to 1-2-2, Figure 2 for location of controls, connectors and indicators.

3.2 SELF TEST

Refer to 1-2-3, Figure 4. STEP PROCEDURE

1. Press POWER Key.

2. Press SELF TEST Key to enter Self Test screen. (The ATC-601 displays results of the last Self Test.)

3. Terminate ANTENNA Connector (J10057) with 50 Ω load connector cover.

4. Press RUN/STOP Key to initiate Self Test. (The top line displays test names while testing and indicates

PASSED

FAILURE

at completion. The ATC-601 displays an eight-digit hexadecimal error code with any failure indications. Also, the ATC-601 displays a

PASSED

FAILED

indication for each module/assembly.)

5. Verify all modules/assemblies passed test.

NOTE: If Self Test indicates a failure,

refer to 1-2-3, Table 2 for error code definitions. If battery fails, refer to 1.7 in 1-2-1 for Battery Recharging. If any other failure occurs, refer to qualified service technicians for maintenance).

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OPERATION MANUAL ATC-601

** SELF TEST - PASSED ** RF MODULE: PASSED DIGITAL MODULE: PASSED POWER SUPPLY/BATTERY: PASSED

Press run to start

** SELF TEST - FAILURE Ш4ШШШШШШ ** RF MODULE: PASSED DIGITAL MODULE: FAILED POWER SUPPLY/BATTERY: PASSED

Press run to start

Sample Self Test Screens

Figure 4

FAILURE

TEST GROUP VERIFIES

LO Control RF Valid ON/OFF status 00000001 2 LO Detect RF LO is locked. 00000002 16 RF Detect RF TX level out/attenuation 00000004 17 Battery Power Supply/

Battery

Non-Volatile RAM Battery

DSP Initialization Digital Handshake routine 00000040 18 Reply Decoder Digital Solicited ATCRBS reply 00000100 10

IF Loop RF Background level (0 dB) 00020000 19

UART Digital RS-232 loop back 00400000 12 Pulse Wrap Digital PULSE to DPSK timing 00800000 11 RAM Digital Dual Port RAM (DPR) 01000000 3

Attenuator #1 Digital Level at endline diodes 10000000 13 Attenuator #2 Digital Level at midline diodes 20000000 13 LO Compensation Digital DCXO control voltage 40000000 15 LED Digital Interrogation and reply drivers 80000000 7

NOTE: Multiple failures are indicated by the sum of the error codes. NOTE: If the DPR Test fails, the Self Test does not run the subsequent RAM tests.

Power Supply/

Battery

Voltage is within correct voltage range.

Battery has sufficient power for RAM to retain memory.

Solicited Mode S reply 00000200 9 Unsolicited Mode S reply

(squitter)

SLS/foreground ratio (9 dB) 00100000 20 DSP does not measure a

non-existent signal.

Video RAM 02000000 4 Non-Volatile RAM 04000000 6 Display RAM 08000000 5

CODE (H)

00000010 1

00000020 Only on

00000400 8

00200000 21

RUNNING

ORDER

power-up

Self Test Error Code Definitions

Table 2

1-2-3

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Page 36

3.3 DIAGNOSTICS

Refer to 1-2-3, Figure 5.

** DIAGNOSTICS ** SIGNAL TYPE: ATC_C PRF: 235

ATTENUATION: 5Ø ADDRESS: 3FABF2 DATA: ØØ5Ø Ø1 INTERROGATIONS: 2Ø FAILURES: Ø Press RUN to start

OPERATION MANUAL ATC-601

Sample Diagnostics Screen

Figure 5

CAUTION: DO NOT OPERATE

DIAGNOSTICS WITH ANTENNA CONNECTED TO ATC-601 TEST SET. TRANSMISSION SIGNALS USED IN DIAGNOSTICS MAY INTERFERE WITH OTHER AREA TRANSPONDER OPERATION AND/OR VIOLATE FCC RULES AND REGULATIONS, PART 87, GOVERNING SIGNAL TRANSMISSIONS FOR LAND TEST STATIONS.

STEP PROCEDURE

1. Press SELF TEST Key to enter Self Test screen.

2. Press either of the SELECT Keys to enter Diagnostics screen.

CAUTION: MAXIMUM INPUT TO THE RF

I/O CONNECTOR CANNOT EXCEED +59 dBm (800 W).

3. Connect a transponder or reply generator to RF I/O Connector, for testing ATC-601 reply decoder.

NOTE: Interrogation generation may

be tested by running Diagnostics Test with or without connecting anything to the ATC-601 Test Set.

4. Use SLEW Keys to change values or signal type. Use SELECT Keys to change items. (Cursor line indicates item selected.)

STEP PROCEDURE

●

SIGNAL TYPE:

Set interrogation signal transmitted by ATC-601. (The interrogation signal is the same as the interrogation sent in Auto Test and applicable Single Tests.) Refer to 1-2-3, Table 3 for choice of signals.

●

PRF:

Set interrogation rate from 1 to 235 interrogations per second. (Mode S signals are limited to a PRF of 78. Selectable PRFs [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 20, 21, 24, 26, 29, 34, 39, 47, 59, 78, 118 or 235] are rounded quotients of 235 divided by whole numbers.)

●

ATTENUATION:

Set attenuation of incoming signal/ATC-601 output from 0 to 100 steps with each step representing 0.5 dB (0 = no attenuation).

●

ADDRESS:

Set address sent in Mode S interrogations. (Address is changeable in three separate sections, each ranging from 00 to FF [hexadecimal].)

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OPERATION MANUAL ATC-601

STEP PROCEDURE

5. Press RUN/STOP Key to initiate test and display following information:

●

DATA:

Shows most recent reply information in hexadecimal form. Refer to Appendix C for reply definition. A two-digit, hexadecimal status byte follows the data field. The ATC-601 currently uses only the least significant digit (LSD) with status definition as follows:

For ATCRBS: LSD=0, 2, 4, 6, 8, A, C or E indicates unsolicited reply.

LSD=1, 3, 5, 7, 9, B, D or F indicates solicited reply.

For Mode S: LSD=0, 4, 8 or C indicates invalid, unsolicited reply.

STEP PROCEDURE

●

INTERROGATIONS:

Indicates number of interrogations transmitted.

●

FAILURES:

Indicates number of interrogations transmitted that received no reply.

6. Press RUN/STOP Key to stop test.

LSD=1, 5, 9 or D indicates valid, unsolicited reply.

LSD=2, 6, A or E indicates invalid, solicited reply.

LSD=3, 7, B or F indicates valid, solicited reply.

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OPERATION MANUAL ATC-601

SIGNAL TYPE DEFINITION USED IN

DSP_MEASURE (not an output signal) Measures Input

(ADC counts in decimal)

CW_M5 Continuous Wave at -5 dB ATC-601 Calibration

CW Continuous Wave at 0 dB

(power level compensates to attenuation)

CW_P4 Continuous Wave at +4 dB ATC-601 Calibration

ATC_A_BCKGND ATCRBS Mode A (background level) Test operations for

ATC_C_BCKGND ATCRBS Mode C (background level) MTL Difference Test

ITM_MODES_C Intermode (Mode C/S) ATCRBS/Mode S All-Call ITM_MODES_A Intermode (Mode A/S) ATCRBS/Mode S All-Call

ITM_ATC_C Intermode (Mode C) ATCRBS Only All-Call

ITM_ATC_A_S Intermode (Mode A) (triggered to detect Mode S) ATCRBS Only All-Call

ITM_ATC_A Intermode (Mode A) (triggered to detect ATCRBS) ATCRBS Only All-Call ATC_C_SLS Mode C with P2 SLS ATCRBS (SLS at -9 dB) ATC_A_SLS Mode A with P2 SLS ATCRBS (SLS at -9 dB)

ATC_C_SLSØDB Mode C with P2 SLS ATCRBS (SLS at 0 dB) ATC_A_SLSØDB Mode A with P2 SLS ATCRBS (SLS at 0 dB)

ATC_C Mode C ATCRBS ATC_A Mode A ATCRBS FMT21 Uplink Format 21 Mode S

FMT2Ø Uplink Format 20 Mode S

FMT16 Uplink Format 16 Mode S FMT11 Uplink Format 11 Mode S Only All-Call

FMT5 Uplink Format 5 Mode S

FMT4_SPR_OFF Uplink Format 4 with Synchronous Phase Reversal

(SPR) off

FMT4_SPR_ON Uplink Format 4 with SPR on Mode S

FMTØ Uplink Format 0 Mode S

ATC-601 Calibration

automatic attenuation

control

Mode S

Diagnostics Signal Definitions

Table 3

1-2-3

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OPERATION MANUAL ATC-601

THIS PAGE INTENTIONALLY LEFT BLANK.

1-2-3

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OPERATION MANUAL ATC-601

4. GENERAL OPERATING PROCEDURES

4.1 GENERAL

This section contains operating instructions for the ATC-601 Ramp Test Set. The operating instructions contain general procedures, identifying the controls, connectors, indicators and Display screens used for the individual ATC-601 test functions. For specific Unit Under Test (UUT) Procedures, refer to the appropriate UUT Manual.

Refer to 1-2-2, Figure 2 for location of controls, connectors and indicators.

The ATC-601 Ramp Test Set tests the operation and installation of an ATCRBS or Mode S transponder in a ramp environment. Four operation modes allow the Test Set to do this:

●

Setup allows operator to set various

parameters used in testing, remote operation and memory storage.

●

Auto Test runs through a group of tests

checking function and operation of the transponder.

4.2 START-UP

Pressing the ATC-601 Test Set POWER Key causes the Start-Up screen to appear on the DISPLAY. Information contained in this screen indicates software versions of the Microprocessing Unit (MPU) and Digital Signal Processor (DSP) used in that

particular Test Set. An Version line indicates Option 1 for remote operation is installed.

in the MPU

●

Single Test allows the user to run

through any one of 21 individual tests.

●

Power Test accurately measures Peak

Pulse Power (Effective Radiated Power [ERP]) and Receiver Sensitivity (Minimum Triggering Level [MTL]) of the transponder, even when direct connection with UUT is not possible.

** ATC-601 RAMP TEST SET ** MPU VERS # 1.06R, DSP VERS # 1.00

Press any key to start

Sample Start-Up Screen

Figure 6

1-2-4

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4.3 SETUP

OPERATION MANUAL ATC-601

The ATC-601 has three Setup Menus. Setup#1 Menu contains the parameters required for accurate test calculations. Setup#2 contains remote operation parameters. Setup#3 Menu contains memory operation parameters.

4.3.1 Setup#1 Menu (Test Operation )

The Setup #1 Menu contains range, height, ATC-601 antenna gain and cable loss parameters used in calculating and verifying reply delay and power measurements.

NOTE: Setup#1 Menu information is

entered before conducting test operations.

** SETUP#1 MENU ** UUT ANTENNA: RANGE HEIGHT

TOP = 11Ø 18 BOTTOM = 45 8 SELECTED = BOTTOM GAIN_1Ø3Ø=11.5 GAIN_1Ø9Ø=12.Ø LOSS=1.Ø

STEP PROCEDURE

1. Position ATC-601 Test Set according to 1-2-4, Figure 8.

NOTE: For best Power Test results,

aircraft, buildings, vehicles and other large objects should not be between Test Set and aircraft with the UUT. Refer to 1-2-4, Figure 31.

2. Press SETUP Key once (three times from Setup#2 Menu or twice from Setup#3 Menu) to enter Setup#1 Menu. (ATC-601 displays information from last Setup#1 Menu.)

** SETUP#1 MENU ** UUT ANTENNA: RANGE HEIGHT TOP = 11Ø 18 BOTTOM = 45 8 SELECTED = TOP GAIN_1Ø3Ø=11.5 GAIN_1Ø9Ø=12.Ø LOSS=1.Ø

** SETUP#1 MENU ** UUT ANTENNA: RANGE HEIGHT TOP = 25Ø 18 **ERROR** BOTTOM = 45 8 SELECTED = TOP GAIN_1Ø3Ø=11.5 GAIN_1Ø9Ø=12.Ø LOSS=1.Ø

** SETUP#1 MENU ** UUT ANTENNA: RANGE HEIGHT TOP = 11Ø 18 BOTTOM = Ø 8 * DIRECT * SELECTED = BOTTOM GAIN_1Ø3Ø=11.5 GAIN_1Ø9Ø=12.Ø LOSS=1.Ø

Sample Setup#1 Menu Screens

Figure 7

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Page 42

30/9.1

25/7.6

20/6.1

POWER

TEST VALID

OPERATION MANUAL ATC-601

15/4.6

10/3.0

HEIGHT BETWEEN ATC-601 AND UUT ANTENNAS (FT/M)

5/1.5

TOO CLOSE

6/1.8

50/15.2

RANGE FROM ATC-601 TO UUT ANTENNA, GROUND DISTANCE (FT/M)

100/30.5

ATC-601 Position Chart

STEP PROCEDURE

3. Enter information using SLEW Keys to change values and SELECT Keys to change parameters. (Cursor line indicates parameter selected.)

NOTE: The SLEW Keys have

different rates of change according to item and the way keys are pressed. Press and release a key to change a value by one foot. Press and hold a key to change Range values in ten foot increments and Height values in five foot increments.

Set following parameters:

Figure 8

STEP PROCEDURE

POWER

TEST

INVALID

150/45.7

●

HEIGHT:

200/61.0

250/76.2

Set vertical distance from Test Set antenna to UUT Antenna, in feet.

●

SELECTED:

Select UUT Antenna tested in Auto, Single and Power Tests. Selection determines what set of Range and Height values are used for Auto, Single and Power Test calculations.

NOTE: Actual UUT Antenna tested

depends upon shielding or disconnecting the UUT Antenna not being tested.

OUT OF RANGE

300/91.4

8102005

●

RANGE:

Set ground distance from ATC-601 to UUT Antenna, in feet. (If ATC-601 is not within effective range per 1-2-4, Figure 8, DISPLAY indicates an error and shows

BAD SETUP!

top line.) Set to connection (indicated on DISPLAY). Set to Test Set antenna.

message in

for direct

when using

●

GAIN 1030/GAIN 1090:

Set Gain in dBi, of Test Set antenna at 1030 MHz and 1090 MHz (noted on Flat Antenna).

●

LOSS:

Set Coaxial Cable Loss in dB, of ATC-601 antenna or direct connect cable (noted on coaxial tag).

4. Press any key to exit Setup#1 Menu.

1-2-4

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OPERATION MANUAL ATC-601

4.3.2 Setup#2 Menu (Remote Operation )

The Setup #2 Menu contains RS-232 interface parameters used for data dumps and serial remote operation (only with Option 1 installed) through the COMM Connector. Refer to 1-2-5 for remote operation and remote commands.

4.3.3 Setup#3 Menu (Memory Operation)

The Setup #3 Menu contains Effective Radiated Power (ERP) units, Diversity Test performance control and memory operation parameters.

STEP PROCEDURE

1. Press SETUP Key three times (or twice from Setup#1 Menu or once from Setup#2 Menu) to enter Setup#3 Menu. ATC-601 displays information from last Setup#3 Menu.

2. Enter information using SLEW Keys to change values and SELECT Keys to change parameters. (Cursor line indicates parameter selected.)

Set following parameters:

●

POWER (ERP) UNITS:

Set ERP measurement units used in Power Test (

WATTS

). Default is

dBm, dBw

dBm

STEP PROCEDURE

●

RECALL TEST DATA:

Set test data to recall from

memory ( Memory Location 1; or stored in Memory Location 2). Default is

Press RUN/STOP Key to recall test data. (A period displayed to the right of the test data selection indicates recall has occurred.)

●

STORE TEST DATA:

Memory Location for storing current test data ( in Memory Location 1; or test data in Memory Location 2). Default is

Press RUN/STOP Key to store current test data. (A period displayed to the right of the Memory Location selection indicates the store has occurred, overwriting any previously stored test data.)

3. Press any key to exit Setup#3 Menu.

for data stored in

for data

to store data

to store

●

DIVERSITY TEST:

Set control over performing Diversity (isolation) Test during

Auto Test ( Test or displays perform Diversity Test). Default is

to perform Diversity

OFF

[Diversity Test

NOT RUN

] to not

** SETUP#3 MENU ** POWER (ERP) UNITS = WATTS DIVERSITY TEST = ON RECALL TEST DATA = 1 STORE TEST DATA = 1. Change store/recall field then press RUN

Sample Setup#3 Menu Screen

Figure 9

1-2-4

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4.4 AUTO TEST

4.4.1 Description

OPERATION MANUAL ATC-601

The Auto Test determines operational transponder modes (A, C and/or S). The Test Set interrogates at a level 4 dB above MTL. After performing the Auto Test, the ATC-601 stores the information in battery backed up memory. Auto Test runs through the following 21 tests:

TEST DESCRIPTIO N

0. Mode Test Identifies modes of operation. The

Mode Test interrogates with Mode A, Mode C and ATCRBS (Mode C)/Mode S All-Call to determine which modes the transponder replies to. These are the modes tested during the Auto Test sequence.

1. Reply Delay Interrogates with valid modes and

verifies reply delay minus range delay (average of best 8 of 13 replies) equals:

●

128.00

●

128.00

µs (±0.25 µs) for Mode S. µs (±0.50 µs) for Intermode

(All-Call)

●

3.00

µs (±0.50 µs) for ATCRBS.

TEST DESCRIPTIO N

3. ATCRBS Reply Interrogates with ATCRBS (Modes A

and C) interrogations and verifies:

●

to F2 spacing is 20.3 µs

(±0.10 µs) .

●

and F2 pulse width between the

0.5 amplitude points on the leading and trailing edge is

0.45 µs (±0.10 µs) .

4. SLS Level NOTE: Because interrogation with

SLS at -9 dB is sent at MTL plus 12 dB, SLS Test must be run within 95 feet (28.96 meters) of UUT Antenna being tested.

Interrogates with valid ATCRBS interrogations including P Interrogations are conducted with P level at -9 dB and then again at 0 dB. Test verifies:

●

Transponder does not reply when

level is at 0 dB (UUT is

suppressed).

pulse.

NOTE: Range delay is 2.03 ns/ft

(6.67 ns/m), calculated from the values in the Setup Menu.

2. Reply Jitter Interrogates with valid modes and

verifies, using best 24 of 39 replies, reply jitter (changes in reply delay) is less than or equal to:

●

0.08

●

0.10

µs for Mode S. µs for Intermode (All-Call)

and ATCRBS.

●

Transponder replies when P

is at -9 dB (UUT is not suppressed).

5. ATCRBS O nly All-Call Interrogates with an ATCRBS only All-

Call and verifies Mode S transponders do not reply.

6. Mode S All-Call Interrogates with the ATCRBS (Mode

A)/Mode S All-Call. Address received in Downlink Format (DF) 11 is then used in an Uplink Format (UF) 4 interrogation to solicit a DF4 reply. The address received is decoded and compared with the address sent.

Jun 1/97

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1-2-4

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OPERATION MANUAL ATC-601

TEST DESCRIPTIO N

7. Invalid Address Transmits Mode S interrogations

using two addresses different from the address determined by the Mode S All-Call, UF11. Test verifies no reply is received. Default addresses used are one greater and 256 greater than the correct address. If Option 1 for remote operation is installed, refer to Miscellaneous Commands in 1-2-5, Table 5 for remotely setting user defined invalid addresses.

8. SPR On/Off Transmits a Mode S interrogation with

the Synchronous Phase Reversal (SPR) On, verifying correct reply is received. Then same interrogation is sent again with the SPR Off, verifying no reply is received.

9. Mode S UF0 Interrogates with Mode S Uplink

Format 0 (Short air to air surveillance, ACAS) verifying reply is received that has correct altitude (compared with Mode C altitude), address (compared with Mode Test address) and format.

10. Mode S UF4 Interrogates with Mode S UF4

(Surveillance, altitude request), verifying reply is received that has correct altitude (compared with Mode C altitude), address (compared with Mode Test address) and format.

11. Mode S UF5 Interrogates with Mode S UF5

(Surveillance, identity request) verifying reply is received that has correct identity (compared with Mode A identity), address (compared with Mode Test address) and format.

TEST DESCRIPTIO N

13. Mode S UF16 Interrogates with Mode S UF16 (Long

air to air surveillance, ACAS), verifying reply, if received, has correct altitude (compared with Mode C altitude), address (compared with Mode Test address) and format. No reply to UF16 does not fail Mode S in Auto Test.

14. Mode S UF20 Interrogates with Mode S UF20

(Comm A, altitude request) verifying reply received has correct altitude (compared with Mode C altitude), address (compared with Mode Test address) and format. No reply to UF20 does not fail Mode S in Auto Test.

15. Mode S UF21 Interrogates with Mode S UF21

(Comm A, identity request) verifying reply received has correct identity (compared with Mode A identity), address (compared with Mode Test address) and format. No reply to UF21 does not fail Mode S in Auto Test.

16. Squitter Verifies squitters are received from

the UUT every 0.8 to 2.4 seconds. ATC-601 only runs Squitter Test when testing Mode S transponders.

17. Frequency Verifies frequency of transponder is

1090 MHz (±3 MHz). The ATC-601 displays frequency in the Auto Test screen.

12. Mode S UF11 Interrogates with Mode S UF11,

verifying reply is received that has correct address (compared with Mode Test address) and format.

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OPERATION MANUAL ATC-601

4.4.2 Direct Connect Procedure

TEST DESCRIPTIO N

18. Diversity Verifies diversity isolation (power

level difference between UUT “On” antenna squitters and “Off” antenna squitters) is greater than or equal to 20 dB. Diversity isolation is displayed in Auto Test screen.

NOTE:To insure ≥20 dB dynamic

range for Diversity Test, test must be run within 50 feet (15.24 meters) of UUT Antenna being tested.

19. MTL Difference Verifies MTL of Mode A interrogations

equals MTL of Mode C interrogations (±1.0 dB).

20. Power NOTE: A special procedure ( refer to

4.6 in 1-2-4) reduces the effects of multipath when measuring power over the air.

Verifies transponder:

● ERP is greater than 48.5 dBm and

less than 57.0 dBm.

● MTL is -73.0 dBm (±4.0 dB).

STEP PROCEDURE

1. Connect UUT to ATC-601 RF I/O Connector.

CAUTION: TO PREVENT DAMAGE

TO ATC-601, DO NOT CONNECT UUT TO ANTENNA CONNECTOR WITH ATC-601 SET FOR DIRECT CONNECT.

2. Perform Setup#1 Menu procedure (4.3.1 in 1-2-4), setting Range for

UUT Antenna to be tested, to

3. Press AUTO TEST Key to enter Auto Test screen. (The ATC-601 shows the results of the last Auto Test on the DISPLAY.)

4. Press RUN/STOP Key to run Auto Test. (

TEST RUNNING

and asterisks in bottom line of DISPLAY indicate test is running.)

5. Press RUN/STOP Key at any time to stop test (non-resumable). (Otherwise, Auto Test runs until all tests are complete.)

6. Verify modes (A, C and/or S) tested, passed or failed as indicated on DISPLAY. Verify UUT frequency, power measurements and diversity isolation as indicated on DISPLAY. If any test section fails or more information is needed, refer to 4.5 in 1-2-4 for Single Test and/or 4.6 in 1-2-4 for Power Test.

1-2-4

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OPERATION MANUAL ATC-601

4.4.3 "Over the Air" Ground Test Procedure (UUT aircraft altitude reporting system ≤airfield altitude)

STEP PROCEDURE

1. Perform Setup#1 Menu procedure in (4.3.1 in 1-2-4).

2. Connect Test Set antenna to ATC-601 ANTENNA Connector. Position Test Set antenna facing UUT Antenna at Setup#1 Menu Range.

3. Either shield with Antenna Shield (refer to Appendix C) or disconnect and terminate UUT Antenna not being tested. Deactivate other area transponders or position transponders at least three times the Setup#1 Menu Range from the Test Set antenna.

4. Press AUTO TEST Key to enter Auto Test screen. (The ATC-601 shows the results of the last Auto Test on the DISPLAY.)

5. Press RUN/STOP Key or ANTENNA PUSH BUTTON Switch (if Flat Antenna is being used) to run Auto Test. (

TEST RUNNING

and asterisks in bottom line of DISPLAY indicate test is running.)

6. Press RUN/STOP Key or ANTENNA PUSH BUTTON Switch (if Flat Antenna is being used) at any time to stop test (non-resumable). (Otherwise, Auto Test runs until all tests are complete.)

7. Verify modes (A, C and/or S) tested, passed and failed as indicated on DISPLAY. Verify UUT frequency, power measurements and diversity isolation as indicated on DISPLAY. If any test section fails or more information is needed, refer to 4.5 in 1-2-4 for Single Test and/or 4.6 in 1-2-4 for Power Test.

4.4.4 "Over the Air" Simulated Altitude Test Procedure (UUT aircraft altitude reporting system >airfield altitude ["pumped up"])

STEP PROCEDURE

1. Perform Setup#1 Menu procedure (4.3.1 in 1-2-4).

2. Connect Test Set antenna to ATC-601 ANTENNA Connector.

3. Shield UUT antenna being tested with Antenna Shield. Refer to Appendix C. Either shield with Antenna Shield or disconnect and terminate UUT Antenna not being tested. Deactivate other area transponders or position transponders >50 feet (15.24 meters) from the Test Set antenna.

NOTE: The Antenna Shield causes

failure indications for Diversity, MTL Difference and Power Tests. The Antenna Shield may cause failure indications for the Frequency test. Such indications may be disregarded. Frequency, Diversity, MTL Difference and Power tests are verified without the Antenna Shield.

4. Position Flat Antenna ≤20 feet (6.1 meters) from transponder antenna being tested. Adjust Setup#1 Menu accordingly.

5. Press AUTO TEST Key to enter Auto Test screen. (The ATC-601 shows the results of the last Auto Test on the DISPLAY.)

6. Press RUN/STOP Key or ANTENNA PUSH BUTTON Switch (if Flat Antenna is being used) to run Auto Test. (

TEST RUNNING

and asterisks in bottom line of DISPLAY indicate test is running.)

7. Press RUN/STOP Key or ANTENNA PUSH BUTTON Switch (if Flat Antenna is being used) at any time to stop test (non-resumable). (Otherwise, Auto Test runs until all tests are complete.)

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STEP PROCEDURE

8. Verify modes (A, C and/or S) tested, passed or failed as indicated on DISPLAY. If any test section fails or more information is needed, refer to

4.5 in 1-2-4 for Single Test.

** AUTO TEST - NOT RUN ** MODES TESTED - FREQ: MODES PASSED - ERP: MODES FAILED - MTL: DIVERSITY ISOLATION: Press RUN to start

** AUTO TEST - PASSED **

MODES TESTED - A,C,S FREQ: 1Ø9Ø.ØØ MHz MODES PASSED - A,C,S ERP: 53 dBm MODES FAILED - MTL: -73 dBm DIVERSITY ISOLATION: 25 dBm Press RUN to start

OPERATION MANUAL ATC-601

** AUTO TEST ** MODES TESTED - FREQ: MODES PASSED - ERP: MODES FAILED - MTL: DIVERSITY ISOLATION: *** TEST RUNNING ***

** AUTO TEST - FAILED ** MODES TESTED - A,C,S FREQ: 1Ø9Ø.ØØ MHz MODES PASSED - A,S ERP: 23 dBw MODES FAILED - C MTL: -73 dBm DIVERSITY ISOLATION: 25 dBm Press RUN to start

** AUTO TEST - FAILED ** MODES TESTED - A,C,S FREQ: 1Ø9Ø.ØØ MHz MODES PASSED - A,C,S ERP: 53 dBm MODES FAILED - MTL: -73 dBm DIVERSITY ISOLATION:→17 dBm Press RUN to start

Sample Auto Test Screens

Figure 10

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4.5 SINGLE TEST

OPERATION MANUAL ATC-601

If more information is needed, the operator is able to view or rerun specific tests. The following paragraphs contain Single Test procedure, information and sample Display screens associated with each test. All tests are the same as those run in the Auto Test. Each Single Test runs a Mode Test first to determine valid transponder modes to be tested. Unlike Auto Test, once initiated, each Single Test continues running until RUN/STOP Key is pressed again. Display screen values are expressed in decimal except for ID codes (expressed in octal). Most Mode S field values are expressed in hexadecimal except for downlink format [DF] and altitude code [AC], expressed in decimal; and identity code [ID], expressed in octal. Top line of DISPLAY indicates PASSED, FAILED, NOT RUN or NO REPLY for that particular test. Refer to 1-2-4, Table 4 for Screen Symbols Identifications. Refer to Appendix B for signal formats and number system conversions.

4.5.1 General Procedure

STEP PROCEDURE

1. Perform the following according to desired test setup:

●

If direct connect is desired,

perform Steps 1 through 3 of 4.4.2 in 1-2-4.

●

If "Over the Air" Ground Test with

UUT aircraft altitude reporting system

≤airfield altitude is desired, perform Steps 1 through 4 of 4.4.3 in 1-2-4.

●

If "Over the Air" Simulated Altitude

Test with UUT aircraft altitude reporting system >>airfield altitude is desired (ATCRBS Reply, Mode S UF0, Mode S UF4 and/or Mode S UF16 Tests), perform Steps 1 through 5 of 4.4.4 in 1-2-4.

2. Use SELECT Keys to go from Auto Test screen to each Single Test. (Results from last test run, Auto or Single, are shown on DISPLAY).

3. Press RUN/STOP Key or ANTENNA PUSH BUTTON Switch (if Flat Antenna is being used) to initiate test.

4. Press RUN/STOP Key or ANTENNA PUSH BUTTON Switch (if Flat Antenna is being used) to stop test.

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4.5.2 Single Test Definitions

SYMBOL LOCATION INDICATES

→ Before item line Error in item

####

++++

****

** TEST RUNNING **

[ ]

■ Before Power Test line Selected UUT Antenna

■■

BAT

Screen Symbols Identification Chart

OPERATION MANUAL ATC-601

Numerical data fields Data string is too large for

data field.

Power line,

Frequency line,

Diversity Isolation line

Power Values Line Variance due to excessive

Bottom line Test is running.

ATCRBS Altitude line

Squitter Address line

Mode S All-Call Address line

Left Side, Below Bottom Line Battery is Low

Left Side, Top Line

Invalid data

multipath

Data in Octal form

Table 4

TEST DESCRIPTIO N

1. Reply Delay Refer to 1-2-4, Figure 11. The ATC-601 interrogates UUT with

Modes A, C, S and ATCRBS/Mode S All-Call (Intermode [ITM]).

The Reply Delay test verifies reply delay minus range delay is:

●

128

●

128

●

3.00

µs (±0.25 µs) for Mode S. µs (±0.50 µs) for ITM.

µs (±0.50 µs) for ATCRBS

(ATC).

Range delay is 2.03 ns/ft (6.67 ns/m) and is calculated using range values established in Setup#1 Menu. Reply delay times are indicated on the DISPLAY. Only Mode S is looked at with ITM interrogation.

** REPLY DELAY TEST - NO REPLY **

MODE S: ITM A: C: ATC A: C: *** TEST RUNNING ***

** REPLY DELAY TEST - PASSED **

MODE S:----- ITM A:------ C:------

ATC A: 3.Ø2 µS C: 3.1Ø µS Press RUN to start

** REPLY DELAY TEST - FAILED **

MODE →S:129.Ø5 µS ITM A:128,Ø2 µS C:128.Ø4 µS ATC A: 3.Ø2 µS C: 3.1Ø µS Press RUN to start

Sample Reply Delay Test Screens

Figure 11

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TEST DESCRIPTIO N

2. Reply Jitter Refer to 1-2-4, Figure 12. The ATC-601 interrogates with Modes

A, C, S and ATCRBS/Mode S All-Call (ITM).

The Reply Jitter test verifies reply jitter:

● ≤0.08 µs for Mode S.

● ≤0.1 µs for ATCRBS and ITM

modes.

The ATC-601 indicates reply jitter values (difference between shortest and longest reply delay) on the DISPLAY.

3. ATCRBS Reply Refer to 1-2-4, Figure 13. The ATC-601 interrogates with Modes

A and C. The ATCRBS Reply test verifies:

●

to F2 spacing is

20.3 µs (±0.10 µs)

●

pulse widths are 0.45 µs

1/F2

(±0.10 µs) .

The ATC-601 indicates F spacing, F1 width and F2 width values on the DISPLAY. The ATC-601 also displays Mode A identity (ID) code and Mode C altitude. If the Special Position Identification Pulse (SPI) is present, the ATC-601 displays before the Mode A code. The ALT field blanks out with an invalid input (no C bit or C

and C4 are on at the

same time) is received. The four- digit octal code, shown regardless of validity, displays the Mode C information as follows (MSD to LSD): A

4,A2,A1/B4,B2,B1/C4,C2,C1/D4,D2,D1

to F

OPERATION MANUAL ATC-601

** REPLY JITTER TEST - PASSED **

MODE S: Ø.Ø3Ø µS ITM A: Ø.Ø5Ø µS C: Ø.Ø5Ø µS ATC A: Ø.1ØØ µS C: Ø.Ø75 µS Press RUN to start

** REPLY JITTER TEST - FAILED **

MODE →S: Ø.13Ø µS ITM A: Ø.Ø5Ø µS C: Ø.Ø5Ø µS ATC A: Ø.1ØØ µS C: Ø.Ø75 µS Press RUN to start

Sample Reply Jitter Test Screens

** ATCRBS REPLY TEST - NO REPLY ** F1 TO F2 SPACING A: C: F1 PULSE WIDTH A: C: F2 PULSE WIDTH A: C: CODE= ALT= [ ] Press RUN to start

** ATCRBS REPLY TEST - PASSED ** F1 TO F2 SPACING A:2Ø.3Ø µS C:2Ø.3Ø µS F1 PULSE WIDTH A: Ø.45 µS C: Ø.45 µS F2 PULSE WIDTH A: Ø.45 µS C: Ø.45 µS CODE= 7777 ALT= 1Ø,7ØØ FT [614Ø]

Press RUN to start

** ATCRBS REPLY TEST - FAILED ** F1 TO F2 SPACING →A:22.ØØ µS C:2Ø.3Ø µS F1 PULSE WIDTH A: Ø.45 µS C: Ø.45 µS

F2 PULSE WIDTH A: Ø.45 µS C: Ø.45 µS CODE= 7777 ALT= 1Ø,7ØØ FT [614Ø] Press RUN to start

Sample ATCRBS Reply Screens

Figure 12

Figure 13

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TEST DESCRIPTIO N

4. SLS Level Refer to 1-2-4, Figure 14. The ATC-601 interrogates with

ATCRBS Modes A and C interrogations including the P pulse, verifying valid replies are

level is set at -9 dB

received when P

and no reply is received when P is set at 0 dB. DISPLAY indicates results.

NOTE: Because interrogation with

SLS at -9 dB is sent at MTL + 12 dB, SLS Test must be run within 95 feet (28.96 meters) of UUT Antenna being tested.

OPERATION MANUAL ATC-601

** SLS LEVEL TEST - PASSED **

-9 dB: REPLY

Ø dB: NO REPLY

SLS

level

Press RUN to start

** SLS LEVEL TEST - FAILED **

-9 dB: REPLY → Ø dB: REPLY

Press RUN to start

** SLS LEVEL TEST - FAILED **

→-9 dB: NO REPLY Ø dB: NO REPLY

Press RUN to start

5. ATCRBS O nly All-Call Refer to 1-2-4 Figure 15. The ATC-601 interrogates with an

ATCRBS only All-Call and verifies no reply is received from Mode S transponders. DISPLAY indicates results.

Sample SLS Level Test Screens

Figure 14

** ATC ONLY ALL-CALL TEST - PASSED **

PASSED TEST

Press RUN to start

** ATC ONLY ALL-CALL TEST - FAILED **

MODE S XPDR REPLIED WITH MODE S

Press RUN to start

** ATC ONLY ALL-CALL TEST - FAILED **

MODE S XPDR REPLIED WITH ATCRBS

Press RUN to start

Sample ATCRBS Only All-Call Test Screens

Figure 15

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TEST DESCRIPTIO N

6. Mode S All-Call Refer to 1-2-4, Figure 16. The ATC-601 interrogates with the

ATCRBS (Mode A)/Mode S All-Call and displays the DF11 reply address. This address is then sent in a UF4 interrogation. The DF4 reply address is indicated on DISPLAY and compared with the one used. Test fails if Mode S reply is not received or address is inconsistent.

7. Invalid Address

OPERATION MANUAL ATC-601

** MODE S ALL-CALL TEST - PASSED **

ALL CALL ADDRESS = 3AC421 [16542Ø41] TAIL NUMBER = N12345

Press RUN to start

** MODE S ALL-CALL TEST - FAILED ** ALL CALL ADDRESS = 3BD532 [16752462] TAIL NUMBER = N12345 DF4 REPLY ADDRESS= 3AC421

Press RUN to start

Sample Mode S All-Call Test Screens

Figure 16

Refer to 1-2-4, Figure 17. The ATC-601 transmits Mode S

interrogations using addresses different from the address determined by the Mode S All-Call (UF11) and verifies no reply is received. Results are indicated on DISPLAY.

8 SPR On/Off

Refer to 1-2-4, Figure 18. The ATC-601 interrogates with a

Mode S interrogation with SPR On and indicates if reply is received. The same interrogation is sent again with SPR Off and test verifies no reply is received. DISPLAY indicates results.

** INVALID ADDRESS TEST - PASSED **

PASSED TEST

Press RUN to start

** INVALID ADDRESS TEST - FAILED **

REPLIED TO INVALID ADDRESS = 3AC422

Press RUN to start

Sample Invalid Address Test Screens

Figure 17

** SPR ON/OFF TEST - PASSED **

SPR ON : REPLY SPR OFF: NO REPLY

Press RUN to start

** SPR ON/OFF TEST - FAILED **

SPR ON : REPLY → SPR OFF: REPLY

Press RUN to start

Sample SPR On/Off Test Screens

Figure 18

1-2-4

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TEST DESCRIPTIO N

9. Mode S UF0 Refer to 1-2-4, Figure 19. The ATC-601 interrogates with UF0

verifying a reply is received having correct altitude, same address and correct format. Altitude reported in DF0 is compared with altitude reported during Mode Test in valid ATCRBS Mode C reply. Address is compared with address reported during Mode Test in DF11 reply. The DISPLAY indicates the Downlink Format Fields. If test fails because of incorrect altitude, Mode C altitude is displayed. If test fails because of wrong address, DF11 address is displayed. UF0 AQ bit is "1" for requesting airspeed information in DF0 RI field.

NOTE: AC field blanks out if invalid

data is received for that field.

OPERATION MANUAL ATC-601

** MODE S UFØ TEST - PASSED **

DF Ø VS=1 RI=Ø AC= 1Ø,7ØØ FT ADDRESS=3AC421

Press RUN to start

** MODE S UFØ TEST - FAILED **

DF Ø VS=1 RI=Ø →AC= 1Ø,8ØØ FT ADDRESS=3AC421 MODE C ALT= 1Ø,7ØØ FT Press RUN to start

** MODE S UFØ TEST - FAILED **

DF Ø VS=1 RI=Ø AC= 1Ø,7ØØ FT →ADDRESS=3BD432 DF11 ADDR=3AC421 Press RUN to start

** MODE S UFØ TEST - FAILED **

→DF 4 VS=1 RI=C AC= 1Ø,7ØØ FT ADDRESS=3AC421

Press RUN to start

Sample Mode S UF0 Test Screens

Figure 19

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TEST DESCRIPTIO N

10. Mode S UF4 Refer to 1-2-4, Figure 20. The ATC-601 interrogates with UF4

verifying a reply is received having correct altitude, same address and correct format. Altitude reported in DF4 (Surveillance, altitude reply) is compared with altitude reported during Mode Test in valid ATCRBS Mode C reply. Address is compared with address reported during Mode Test in DF11 reply. The DISPLAY indicates the Downlink Format Fields. If test fails because of incorrect altitude, Mode C altitude is displayed. If test fails because of wrong address, DF11 address is displayed.

NOTE: AC field blanks out if invalid

data is received for that field.

OPERATION MANUAL ATC-601

** MODE S UF4 TEST - PASSED **

DF 4 FS=1 DR=ØØ UM=ØØ AC= 1Ø,7ØØ FT ADDRESS=3AC421

Press RUN to start

** MODE S UF4 TEST - FAILED **

DF 4 FS=1 DR=ØØ UM=ØØ →AC= 1Ø,8ØØ FT ADDRESS=3AC421 MODE C ALT = 1Ø,7ØØ FT Press RUN to start

** MODE S UF4 TEST - FAILED **

DF 4 FS=1 DR=ØØ UM=ØØ →AC= 1Ø,7ØØ FT →ADDRESS=3AB352 DF11 ADDR=3AC421 Press RUN to start

** MODE S UF4 TEST - FAILED **

→DF Ø FS=1 DR=ØØ UM=ØØ AC= 1Ø,7ØØ FT ADDRESS=3AC421

Press RUN to start

Sample Mode S UF4 Test Screens

Figure 20

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TEST DESCRIPTIO N

11. Mode S UF5 Refer to 1-2-4, Figure 21. The ATC-601 interrogates with UF5

verifying a reply is received having correct ID, same address and correct format. ID code reported in DF5 (Surveillance, identity reply) is compared with ID code reported during Mode Test in valid ATCRBS Mode A reply. Address is compared with address reported during Mode Test in DF11 reply. The DISPLAY indicates the Downlink Format Fields. If test fails because of incorrect ID code, Mode A, ID code is displayed. If test fails because of wrong address, DF11 address is displayed.

OPERATION MANUAL ATC-601

** MODE S UF5 TEST - PASSED **

DF 5 FS=1 DR=ØØ UM=ØØ ID=7777 ADDRESS=3AC421

Press RUN to start

** MODE S UF5 TEST - FAILED **

DF 5 FS=1 DR=ØØ UM=ØØ →ID=7377 ADDRESS=3AC421 MODE A CODE= 7777 Press RUN to start

** MODE S UF5 TEST - FAILED **

DF 5 FS=1 DR=ØØ UM=ØØ ID=7777 →ADDRESS=3BDE31 DF11 ADDR=3AC421 Press RUN to start

** MODE S UF5 TEST - FAILED **

→DF Ø FS=3 DR=12 UM=14 ID=318Ø ADDRESS=3AC421

Press RUN to start

Sample Mode S UF5 Test Screens

Figure 21

1-2-4

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TEST DESCRIPTIO N

12. Mode S UF11 Refer to 1-2-4, Figure 22. The ATC-601 interrogates with UF11

verifying a reply is received having the same address and correct format. Address is compared with address reported during Mode Test. The DISPLAY indicates the Downlink Format Fields. If test fails because of incorrect AA, Mode Test address is displayed.

OPERATION MANUAL ATC-601

** MODE S UF11 TEST - PASSED **

DF11 CA=0 AA=3AC421 PI=ШШШШШШШ

Press RUN to start

** MODE S UF11 TEST - FAILED **

→DF16 CA=1 AA=3AC421 PI=ШШШШШШ

Press RUN to start

** MODE S UF11 TEST - FAILED **

DF11 CA=1 →AA=33E35B PI=ШШШШШШ DF11 ADDR=3AC421

Press RUN to start

Sample Mode S UF11 Test Screens

Figure 22

1-2-4

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TEST DESCRIPTIO N

13. Mode S UF16 Refer to 1-2-4, Figure 23. The ATC-601 interrogates with UF16

verifying reply, if received, has correct altitude, same address and correct format. Altitude reported in DF16 is compared with altitude reported during Mode Test in valid ATCRBS Mode C reply. Address is compared with address reported during Mode Test in DF11 reply. The DISPLAY indicates the Downlink Format Fields. If test fails because of incorrect AC, Mode C altitude is displayed. If test fails because of wrong address, DF11 address is displayed. UF16 AQ bit is "0" for requesting TCAS capability information in DF16 RI field.

NOTE: AC field blanks out if invalid

data is received for that field.

OPERATION MANUAL ATC-601

** MODE S UF16 TEST - PASSED **

DF16 VS=Ш RI=Ш AC= 1Ш,7ШШ FT MV=ШШШШШШШШШШШШШШ ADDRESS=3AC421

Press RUN to start

** MODE S UF16 TEST - FAILED **

DF16 VS=Ш RI=Ш AC= 1Ш,7ШШ FT MV=ШШШШШШШШШШШШШШ →ADDRESS=543212 DF11 ADDR=3AC421 Press RUN to start

** MODE S UF16 TEST - FAILED **

→DF21 VS=Ш RI=Ш →AC= 1Ш,7ШШ FT MV=ШШШШШШШШШШШШШШ ADDRESS=3AC421

Press RUN to start

** MODE S UF16 TEST - FAILED **

DF16 VS=Ш RI=Ш →AC= 11,2ШШ FT MV=ШШШШШШШШШШШШШШ ADDRESS=3AC421 MODE C ALT= 1Ш,7ШШ FT Press RUN to start

Sample Mode S UF16 Test Screens

Figure 23

1-2-4

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TEST DESCRIPTIO N

14. Mode S UF20 Refer to 1-2-4, Figure 24. The ATC-601 interrogates with UF20

verifying reply, if received, has correct altitude, same address and correct format. Altitude reported in DF20 (Comm B, altitude reply) is compared with altitude reported during Mode Test in DF11 reply. The DISPLAY indicates the Downlink Format Fields. If test fails because of incorrect AC, Mode C altitude is displayed. If test fails because of wrong address, DF11 address is displayed.

OPERATION MANUAL ATC-601

** MODE S UF2Ø TEST - PASSED **

DF2Ш FS=Ш DR=ШШ UM=ШШ AC= 1Ш,7ШШ FT MB=ШШШШШШШШШШШШШШ ADDRESS=3AC421

Press RUN to start

** MODE S UF2Ø TEST - FAILED **

DF2Ш FS=Ш DR=ШШ UM=ШШ→AC= 1Ш,ШШШ FT MB=ШШШШШШШШШШШШШШ ADDRESS=3AC421 MODE C ALT= 1Ш,7ШШ FT Press RUN to start

** MODE S UF2Ø TEST - FAILED **

NOTE: AC field blanks out if invalid

data is received for that field.

→DF21 FS=Ш DR=ШШ UM=ШШ AC= 1Ш,7ШШ FT MB=ШШШШШШШШШШШШШШ ADDRESS=3AC421

Press RUN to start

** MODE S UF2Ø TEST - FAILED **

DF2Ш FS=Ш DR=ШШ UM=ШШ AC= 1Ш,7ШШ FT MB=ШШШШШШШШШШШШШШ →ADDRESS=3BD422 DF11 ADDR=3AC421 Press RUN to start

** MODE S UF2Ø TEST - NO REPLY **

DF FS= DR= UM= AC= MB= ADDRESS=

Press RUN to start

Sample Mode S UF20 Test Screens

Figure 24

1-2-4

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TEST DESCRIPTIO N

15. Mode S UF21 Refer to 1-2-4, Figure 25. The ATC-601 interrogates with UF21

verifying reply, if received, has correct ID, same address and correct format. ID code reported in DF21 (Comm B, identity reply) is compared with ID code reported during Mode Test in valid ATCRBS Mode A reply. Address is compared with address reported during Mode Test in DF11 reply. The DISPLAY indicates the Downlink Format Fields. If test fails because of incorrect ID code, Mode A ID code is displayed. If test fails because of wrong address, DF11 address is displayed.

OPERATION MANUAL ATC-601

** MODE S UF21 TEST - PASSED **

DF21 FS=Ш DR=ШШ UM=ШШ ID=7777 MB=ШШШШШШШШШШШШШШ ADDRESS=3AC421

Press RUN to start

** MODE S UF21 TEST - FAILED **

→DF16 FS=Ш DR=ШШ UM=ШШ ID=3247 MB=ШШШШШШШШШШШШШШ ADDRESS=3AC421

**** TEST RUNNING ****

** MODE S UF21 TEST - FAILED **

DF21 FS=Ш DR=ШШ UM=ШШ→ID=7377 MB=ШШШШШШШШШШШШШШ ADDRESS=3AC421 MODE A CODE= 7777 Press RUN to start

** MODE S UF21 TEST - FAILED **

DF21 FS=Ш DR=ШШ UM=ШШ ID=7777 MB=ШШШШШШШШШШШШШШ →ADDRESS=3BD422 DF11 ADDR=3AC421 Press RUN to start

** MODE S UF21 TEST - NO REPLY **

DF FS= DR= UM= ID= MB= ADDRESS=

Press RUN to start

Sample Mode S UF21 Test Screens

Figure 25

1-2-4

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TEST DESCRIPTIO N

16. Squitter Refer to 1-2-4, Figure 26. The Squitter test verifies the time

period between UUT squitters is 0.8 to 2.4 seconds. The ATC-601 displays the measured time between UUT squitters along with the squitter address (hexadecimal and octal) and tail number.

17. Frequency

OPERATION MANUAL ATC-601

** SQUITTER TEST - PASSED **

PERIOD = 1.ØØ SECONDS TAIL NUMBER = N12345 SQUITTER ADDRESS=3AC421 [16542Ø41]

Press RUN to start

** SQUITTER TEST - FAILED ** →PERIOD = 2.64 SECONDS TAIL NUMBER = N12345 SQUITTER ADDRESS=3AC421 [16542Ø41]

Press RUN to start

Sample Squitter Test Screens

Figure 26

Refer to 1-2-4, Figure 27. The Frequency test verifies UUT

frequency is 1090 MHz (±3 MHz). The ATC-601 displays the UUT frequency.

** FREQUENCY TEST - PASSED **

FREQUENCY = 1Ø92.3Ø MHz

Press RUN to start

** FREQUENCY TEST - PASSED **

→FREQUENCY = 1Ø86.8Ø MHz

Press RUN to start

Sample Frequency Test Screens

Figure 27

1-2-4

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TEST DESCRIPTIO N

18. Diversity Refer to 1-2-4, Figure 28. The Diversity test verifies UUT

diversity isolation (difference between "On" antenna squitters and "Off" antenna squitters) is ≥20 dB. ATC-601 displays diversity isolation in dB. Test only runs if set in Setup#3 Menu.

NOTE:To insure ≥20 dB dynamic

range, test must be run within 50 feet (15.24 meters) of UUT Antenna being tested.

OPERATION MANUAL ATC-601

** DIVERSITY TEST - PASSED **

DIVERSITY ISOLATION: 27 dB

Press RUN to start

** DIVERSITY TEST - FAILED **

DIVERSITY ISOLATION: +++++ SATURATED

Press RUN to start

** DIVERSITY TEST - FAILED **

DIVERSITY ISOLATION: 18 dB

Press RUN to start

19. MTL Difference Refer to 1-2-4, Figure 29. Verifies Receiver Sensitivity or MTL to

Mode A interrogations does not differ more than 1 dB from MTL to Mode C interrogations. The MTL difference, based on the average of 100 Mode A and 100 Mode C interrogations, is displayed.

** DIVERSITY TEST - FAILED **

DIVERSITY ISOLATION: +++++

Press RUN to start

Sample Diversity Test Screens

Figure 28

** MTL DIFFERENCE TEST - PASSED **

MODE A MTL - MODE C MTL = Ø.2 dB

Press RUN to start

** MTL DIFFERENCE TEST - FAILED **

MODE A MTL - MODE C MTL = 1.1 dB

Press RUN to start

Sample MTL Difference Test Screens

Figure 29

1-2-4

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4.6 POWER TEST

4.6.1 General

OPERATION MANUAL ATC-601

The Power Test accurately determines the ERP and MTL of the transponder, whether or not a direct connection with the UUT is used. Two values for each measurement are provided on the DISPLAY. INSTANT values are obtained from the average power readings of the replies received to 100 interrogations. This value is updated every 100 interrogations. The TOP AVG and BOT AVG values are obtained from the average power readings of all replies received during the Power Test sequence.

The Power Test verifies:

●

48.5 dBm <UUT ERP <57.0 dBm

●

UUT MTL =-73.0 dBm (

±4.0 dB)

4.6.2 Procedure

Refer to 1-2-4, Figures 30, 31 and 32. True slant range (Line of Sight Distance) is

based on Test Set Antenna to UUT Antenna vertical separation (Setup Height) and horizontal separation (Setup Range). For accurate readings, Power Test must be run at the Range and Height established in Setup#1 Menu procedure. Refer to 1-2-4, Figures 8, 31 and 32.

STEP PROCEDURE

1. Perform Setup#1 Menu procedure (4.4.1 in 1-2-4).

2. Press PWR TEST Key to enter Power Test screen. (ATC-601 displays results from last Power Test in units selected in Setup#3 Menu.)

3. Select UUT Antenna to be tested, top or bottom, with SELECT Keys.

4. Connect UUT to RF I/O Connector for direct connection or connect a Test Set Antenna (Flat Antenna is most accurate) to ANTENNA Connector.

STEP PROCEDURE

5. If direct connection is not used, shield UUT Antenna not being tested with Antenna Shield (refer to Appendix C) or disconnect UUT Antenna and terminate with 50 Ω load.

6. If direct connection is used, terminate ATC-601 ANTENNA Connector with 50 Ω load (connector cover ).

7. Face Test Set Antenna towards UUT Antenna. Press RUN/STOP Key or ANTENNA PUSH BUTTON Switch to initiate Power Test. If Direct Connection is used, go to Step 9.

NOTE: Test Set displays accur ate

power readings when Flat Antenna is facing UUT at Setup#1 Menu Range (distance) according to 1-2-4, Figures 31 and 32. If more accuracy is required, Step 8 is recommended to further reduce errors caused by multipath from the ramp.

8. Starting from ground level, move Flat Antenna upward 6 feet (1.8 meters) at <1 ft/sec (0.3 m/sec).

●

Do not move towards or away from

UUT or Range becomes inconsistent.

●

Do not rotate Flat Antenna or

power levels are reduced.

●

Move Flat Antenna below and

above the median height the same distance for the same amount of time to obtain an accurate power average. (The median height is the height of the Flat Antenna from the ground, required to obtain the Setup Height between the Flat Antenna and UUT Antenna.)

9. Press RUN/STOP Key or ANTENNA PUSH BUTTON Switch to terminate Power Test.

1-2-4

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OPERATION MANUAL ATC-601

** POWER TEST ** ERP(WATTS) MTL(dBm) STATUS

■ TOP AVG = 156 -73.4 PASSED

BOT AVG = 135 -74.3 PASSED INSTANT = 146 -73.4 Press RUN to start

** POWER TEST ** ERP(dBm ) MTL(dBm) STATUS TOP AVG = 53.0 -73.4 PASSED

■ BOT AVG =

→

47.8 -75.Ø FAILED INSTANT = 47.8 -75.Ø Press RUN to start

USING TEST SET ANTENNA

** POWER TEST - TOP ANTENNA ** ANTENNA ERP(WATTS) MTL(dBm) STATUS

Top 156 -73.4 PASSED Press RUN to start

** POWER TEST - BOTTOM ANTENNA ** ANTENNA ERP(dBm ) MTL(dBm) STATUS

Bottom 53.0 -73.4 PASSED Press RUN to start

DIRECT CONNECTION

Sample Power Test Screens

Figure 30

1-2-4

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Page 65

BUILDING

OPERATION MANUAL ATC-601

8518002

20 OF BEAMWIDTH.

≈

PATTERN

ANTENNA

BEAMWIDTH

MULTIPATH

VERTICAL 40

AND HORIZONTAL

WITH UUT

AIRCRAFT

MULTIPATH

TEST SET

FOR ACCEPTABLE PERFORMANCE:

OTHER AIRCRAFT SHOULD BE >3X

ANTENNA

OCCUPYING <

DISTANCE FROM TEST SET. BUILDINGS

SHOULD BE AT OBLIQUE ANGLES

SWITCH

HANDLE

PUSH BUTTON

BNC CONNECTOR

Suggested Layout to Reduce Multipath Errors

FLAT ANTENNA

TEST SET

9’ CABLE TO

Figure 31

BUILDING

FOR OPTIMUM PERFORMANCE:

BUILDINGS, VEHICLES AND OTHER

AIRCRAFT SHOULD BE LOCATED AT

RIGHT ANGLES TO OR BEHIND ANTENNA.

1-2-4

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OPERATION MANUAL ATC-601

8118003

B. SETUP RANGE

C. LINE OF SIGHT DISTANCE

TESTING TOP ANTENNA

ANTENNA SHIELD

A. SETUP HEIGHT

TO TOP ANTENNA.

AIRCRAFT BLOCKING LINE OF SIGHT

USE SETUP POSITION THAT HAS

TOP ANTENNA IS NOT PRACTICAL,

WHEN SHIELDING OR TERMINATING

TESTING BOTTOM ANTENNA

Ramp Testing

Figure 32

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OPERATION MANUAL ATC-601

THIS PAGE INTENTIONALLY LEFT BLANK.

1-2-4

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OPERATION MANUAL ATC-601

5. REMOTE OPERATION

5.1 GENERAL

Installation of Option 1 allows remote operation of the ATC-601 from a PC using Terminal Emulation Software or an RS-232 Terminal. Dumping test data does not require installation of Option 1. Refer to

5.1.1 and 5.2.3 for dumping test data.

5.1.1 Operation

The ATC-601 must be configured according to the following procedure for remote operation. Refer to 5.3 in 1-2-5 for Recommended Test Procedures.

STEP PROCEDURE

1. Connect Host System Comm Connector to ATC-601 COMM Connector according to 1-2-5, Figure 34 for 9-Pin operation or 1-2-5, Figure 35 for 25-Pin operation.

NOTE: A PC, using Terminal

Emulation Software, or RS-232 Terminal can be used as the Host System.

STEP PROCEDURE

●

PARITY:

Set parity check mode (

ODD, EVEN, MARK

Default is

●

HANDSHAKE:

Set handshake mode ( [one-way hardware], [two-way hardware] or [software]). Default is

●

REMOTE ECHO:

Set remote echo status ( enable or shown if Option 1 is installed. Default is

●

PREFIX STRING:

Set reply prefix status ( prefix strings to remote operation replies for definition or Default is

NONE

OFF

to disable), only

NONE

SPACE

NONE, CTS

CTS/DTR

Xon/Xoff

to add

OFF

2. Press SETUP Key twice (once from Setup#1 Menu or three times from Setup#3 Menu) to enter Setup#2 Menu. ATC-601 displays information from last Setup#2 Menu.

3. Enter information using SLEW Keys to change values and SELECT Keys to change parameters. (Cursor line indicates parameter selected.)

Set following parameters:

●

BAUD RATE:

Set Baud Rate in bps (

110, 150

300, 600, 1200, 2400, 4800, 9600,

19200

●

DATA BITS:

Set number of data bits per word

or 8). Default is 8.

(

●

STOP BITS:

Set number of stop bits per word

or 2). Default is 1.

(

38400

). Default is

9600

●

DUMP TEST DATA:

Select test data to transmit to Host

System ( [default], Memory Location 1; or data stored in Memory Location 2).

●

Press RUN/STOP Key with

cursor located in DUMP TEST DATA: field to download test data. (A period displayed to the right of the test data selection indicates the

4. Press any key to exit Setup#2 Menu.

download has occurred.)

●

Refer to TEST:ALL? query in

5.2.3 in 1-2-5 for test data definition. (Test data is sent in same format as in TEST:ALL? query, except all semicolons are replaced with <CrLf> line terminators.)

for active test data

for test data stored in

for test

1-2-5

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OPERATION MANUAL ATC-601

** SETUP#2 MENU **

BAUD RATE = 96ØØ REMOTE ECHO = ON DATA BITS = 8 PREFIX STRING = ON STOP BITS = 1 DUMP TEST DATA = Ø PARITY = NONE Press RUN to send HANDSHAKE = NONE data to COMM port!

Sample Setup#2 Menu Screen

Figure 33

7 8 1

ATC-601 COMM

CONNECTOR (J10053)

2 1 8

END OF CABLE PLUG

7 8 1

ATC-601 COMM

CONNECTOR (J10053)

2 1 8

ATC-601 HOST

PIN 1 PIN 2 PIN 3 PIN 4 PIN 5 PIN 6 PIN 7 PIN 8 PIN 9PIN 9

DCD RX TX DTR GND DSR RTS CTS

8102003

TXD DTR RXD

CTS

GND

PIN 1 PIN 2 PIN 3 PIN 4 PIN 5 PIN 6 PIN 7 PIN 8

PIN 10

ATC-601 - Host Cable Connections (9-Pin)

Figure 34

ATC-601 HOST

PIN 1 PIN 2 PIN 3 PIN 4 PIN 5 PIN 6 PIN 7 PIN 8 PIN 9PIN 9

PIN 20

TX RX RTS CTS DSR GND DCD

DTR

TXD DTR RXD

CTS

GND

PIN 1 PIN 2 PIN 3 PIN 4 PIN 5 PIN 6 PIN 7 PIN 8

PIN 10

END OF CABLE PLUG

ATC-601 - Host Cable Connections (25-Pin)

8102004

Figure 35

1-2-5

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OPERATION MANUAL ATC-601

5.1.2 Syntax Commands are structured hierarchically

through the use of a colon (

) delimiter.

Commands with multiple parameter fields

separate parameters with a comma (

). An example of a multiple parameter command is:

TEST:UF0:UDAT 0,1,#H3AC421

(programming Uplink Format 0 using an

address of 3AC421h).

At least one space is needed between the command and first parameter. Other spaces or no spaces do not affect the command. Query commands contain a

question mark (

) at the end of the command and before any parameters. Query commands request data from the ATC-601. 1-2-5, Table 5 shows command syntax punctuation.

PUNCTUATION NAME DESCRIPTION

: Compound

Command Separator

, Parameter

Separator

? Query

Command

Ending

Allows

hierarchy of

command structure.

Separates

parameters in

multiple

parameter

command line.

Requests

return data.

Command Syntax Punctuation

Table 5

Numeric data is in decimal form unless specified otherwise. Other numeric formats (base 2, 8 or 16) are specified by preceeding the data with one of the following character strings:

#B (Binary [base 2]) #Q (Octal [base 8]) #H (Hexadecimal [base 16])

Any specified format may be used to send data, but output (received) data is returned only in the format listed in the applicable 1-2-5 table.

Commands are entered using short or long form. The short form is shown in upper case and the long form remainder is shown in lower case. Commands, themselves, are not case sensitive. Italicized items indicate variables. Bold items indicate optional reply prefix strings activated by one of the following:

●

Setting Setup#2 PREFIX STRING =

●

Sending the command:

SYSTem:COMMunicate:PREF ix 1

Parentheses indicate explanations. A

backslash (

), not part of the command, indicates the one line command is continued on next line (to fit in the table). Remote operation has only one command per line and one line per command.

1-2-5

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OPERATION MANUAL ATC-601

5.2 COMMANDS

5.2.1 Nonspecific Commands

COMMAND RANGE DEFINITION

*CLS Clears status command/error

queue.

*IDN? IFR SYSTEMS INC,

ATC-601,

serial number,CPU Firmware Version-DSP Firmware Version

SYSTem:ERRor? -32769 to 32767 (decimal

format) with " no error.)

SYSTem:COMMunicate:\ SERial:ECHO

SYSTem:COMMunicate:\ SERial:ECHO?

SYSTem:COMMunicate:\ PREFix

SYSTem:COMMunicate:\ PREFix?

SYSTem:BATTery? 1 (Charged) or 0 (Low) Returns Battery status. SYSTem:SCReen

SYSTem:SCReen? 0 to 27 Returns currently displayed

=1 (On) or 0 (Off) Sets RS232 remote echo state.

1 or 0 Returns RS232 remote echo

=1 (Enable) or 0 (Disable) Enables or disables prefix

1 or 0 Returns prefix string control

=0 to 27 Displays screen number X.

description

" (0 is

Returns Test Set identification parameters (manufacturer, model, serial number, firmware versions for CPU and DSP).

Returns next entry from 16 entry error queue. Refer to 1-2-5, Table 7.

state.

strings sent with remote test replies.

status.

Refer to 1-2-5, Table 8.

screen number.

Nonspecific Commands

Table 6

1-2-5

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OPERATION MANUAL ATC-601

NUMBER MESSAGE DEFINITION

0 NO ERROR No errors

-102 SYNTAX ERROR Bad command sent

-108 PARAMETER NOT ALLOWED Too many parameters sent

-109 MISSING PARAMETER Too few parameters sent

-120 NUMERIC DATA ERROR Parameter not a number

-221 SETTINGS CONFLICT Wrong mode or improper setup

-222 DATA OUT OF RANGE Parameter out of range

-230 DATA CORRUPT OR STALE Data possibly invalid

-240 HARDWARE ERROR Hardware problem

-314 SAVE/RECALL MEMORY LOST Bad setup

-350 QUEUE OVERFLOW;TOO MANY ERRORS Too many errors to fit in error queue

-351 QUEUE ERROR;UNDEFINED ERROR Unknown error number

Error Queue Numbers and Messages

Table 7

SCREEN

NUMBER DISPLAYED SCREEN

0 Auto Test 14 Mode S UF20 Test 1 Reply Delay Test 15 Mode S UF21 Test 2 Reply Jetter Test 16 Squitter Test 3 ATCRBS Reply Test 17 Frequency Test 4 SLS Level Test 18 Diversity Test 5 ATCRBS Only All-Call Test 19 MTL Difference Test 6 Mode S All-Call Test 20 Power Test (Setup#1 Range >0) 7 Invalid Address Test 21 Power Test (Setup#1 Range =0) 8 SPR On/Off Test 22 Self Test

9 Mode S UF0 Test 23 Setup#1 Menu 10 Mode S UF4 Test 24 Setup#2 Menu 11 Mode S UF5 Test 25 Setup#3 Menu 12 Mode S UF11 Test 26 Start-up 13 Mode S UF16 Test 27 Diagnostics

SCREEN

NUMBER DISPLAYED SCREEN

Display Screens

Table 8

1-2-5

Page 5

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5.2.2 ATC-601 Specific Commands

COMMAND RANGE DEFINITION

OPERATION MANUAL ATC-601

SETUP COMMANDS

ANTenna:TOP X,

ANTenna:TOP? 0 to 300,0 to 99 Returns top antenna range and

ANTenna:BOTTom X,

ANTenna:BOTTom? 0 to 300,0 to 99 Returns bottom antenna range

ANTenna:INPut

ANTenna:INPut? TOP or BOTTOM Returns selected antenna range

ANTenna:GAIN X,

ANTenna:GAIN? 0.0 to 20.9,0.0 to 20.9 Returns Test Set antenna gain

ANTenna:LOSS

=0 (direct connect) to 300,

=0 to 99 (1 foot increments)

=0 (direct connect) to 300

=0 to 99 (1 foot increments)

=TOP or BOTTOM Selects which antenna range and

=0.0 to 20.9 (1030 MHz)

=0.0 to 20.9 (1090 MHz)

(0.1 dBi increments)

=0.0 to 9.9 (0.1 dB increments) Sets coaxial cable loss of Test

Sets top antenna range and height in feet.

height in feet. Sets bottom antenna range and

height in feet.

and height in feet.

height values to be used in testing.

and height values used in testing. Sets Test Set antenna gain at

1030 MHz and 1090 MHz, in dBi.

settings at 1030 MHz and 1090 MHz, in dBi.

Set antenna or direct connect cable, in dB.

ANTenna:LOSS? 0.0 to 9.9 Returns coaxial cable loss of

Test Set antenna or direct connect cable, in dB.

DIAGNOSTIC COMMANDS

DIAGnostic:ADDRess

DIAGnostic:ADDRess? #H0 to #HFFFFFF (hexadecimal) Returns Mode S address sent in

DIAGnostic:ATTENuation

DIAGnostic:ATTENuation? 0 to 100 (0=0 dB,

DIAGnostic:DATA? #H0 to #HFFFFFFFFFFFFFF

DIAGnostic:FAILures? 0 to 2147483647

=#H0 to #HFFFFFF

(hexadecimal)

=0 to 100 (0=0 dB,

each step=0.5 dB)

(data),#H0 to #HFF (status) (hexadecimal)

(-1=not available)

Sets address sent in Mode S diagnostics interrogations.

diagnostics interrogations. Sets attenuation for I/O

diagnostics test signals. Returns attenuation for I/O

diagnostics test signals. Returns most recent reply

information and status. Refer to

3.3 in 1-2-3. Returns number of diagnostics

interrogations sent with no reply received.

ATC-601 Specific Commands

Table 9 (Cont)

1-2-5

Page 6

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OPERATION MANUAL ATC-601

COMMAND RANGE DEFINITION

DIAGnostic:\ INTERRogations?

DIAGnostic:PRF

DIAGnostic:PRF? 1 to 16, 18, 20, 21, 24, 26, 29,

DIAGnostic:STARt Starts diagnostics test. DIAGnostic:STOP Stops diagnostics test. DIAGnostic:STYPe Refer to 1-2-3, Table 3. Sets diagnostics test signal type.

TEST:AC:ATC? ATC ALL CALL -

TEST:AC:ATC:STARt Runs ATCRBS Only All-Call Test. TEST:AC:S? MODE S ALL CALL -

0 to 2147483647 (-1=not available)

=1 to 16, 18,, 20, 21, 24, 26, 29,

34, 39, 47, 59, 78, 118 or 235

TEST COMMANDS

Status,Reply Status Status

RUN or NO REPLY

Reply Status

transponder replied w/ Mode S.), 2 (Mode S transponder replied w/ ATCRBS.) or 3 (ATCRBS transponder did not reply.)

=PASSED, FAILED, NOT

=0 (ok), 1 (Mode S

Status

Reply Status,Tail Number,All-Call

Returns number of diagnostics interrogations sent.

Sets diagnostics interrogation rate (Mode S ≤78).

Returns diagnostics interrogation rate.

Returns ATCRBS Only All-Call Test result s.

Returns Mode S All-Call Test data.

Address,DF4 Address Status

RUN or NO REPLY

Reply Status

reply), 2 (No DF11 reply), 3 (no reply to test interrogations) or 4 (DF4 reply va lid)

Tail Number All-Call Address

hexadecimal

DF4 Address

(only if invalid)

=PASSED, FAILED, NOT

=0 (ok), 1 (No DF4

=6 ASCII characters

=24 bit/

=24 bit/hexadecimal

TEST:AC:S:STARt Runs Mode S All-Call Test.

ATC-601 Specific Commands

Table 9 (Cont)

1-2-5

Page 7

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Page 75

OPERATION MANUAL ATC-601

COMMAND RANGE DEFINITION

TEST:ADDRess? INVALID ADDRESS -

Reply Status,Invalid Ad dress 1

Status

Returns Inval id Address Test

data.

Invalid Ad dress 2 Status

RUN or NO REPLY

Reply Status Invalid Ad dress 1

to to

Invalid Ad dress 1

hexadecimal (only if invalid)

Invalid Ad dress 2

hexadecimal (only if invalid) TEST:ADDRess:STARt Runs Invalid Address Test. TEST:ALL? Refer to 5.2.3 in 1-2-5. Returns all test data. TEST:ATCReply? ATCRBS REPLY -

Flags,Spacing-A,Spacing-C,F

Width-A,F1 Width-C,F2 Width-A

F2 Width-C

shown otherwise),

Status

RUN or NO REPLY

Status Flags

(6 flags/Spacing-A, Spacing-C, F

Width-A, F1 Width-C, F2 Width-A,

F2 width-C)

Spacing-A=xx.xx

in µs)

Spacing-C=xx.xx

in µs)

F1 Width-A=x.xx

in µs)

F1 Width-C=x.xx

in µs)

F2 Width-A=x.xx

in µs)

F2 Width-C=x.xx

in µs)

Code

Altitude

altitude in feet)

=PASSED, FAILED, NOT

=0 (ok), 1 (Replied to

), 2 (Replied

Invalid Ad dress 2

), 3 (Replied

Invalid Addresses 1 and 2

=24 bit/

Status,Status

,ID (SPI indicator, not

Code,Altitude

=PASSED, FAILED, NOT

=P (Pass) or F (Fail)

(Mode A spacing

(Mode C spacing

(Mode A F1 width

(Mode C F1 width

(Mode A F2 width

(Mode C F2 width

=13 bit/octal (Mode A ID )

=24 bit/decimal (Mode C

)

Returns ATCRBS Repl y Test

data.

TEST:ATCReply:STARt Runs ATCRBS Reply Test.

ATC-601 Specific Commands

Table 9 (Cont)

1-2-5

Page 8

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OPERATION MANUAL ATC-601

COMMAND RANGE DEFINITION

TEST:AUTO? AUTO -

Modes,Pass Modes,Fail Modes

Status,Status Flags,Test

Returns Auto Test data.

Freq, ERP,MTL,Diversity Status

RUN or NO REPLY

Status Flags

(2 flags/ERP,MTL power tests)

Test Modes Pass Modes Fail Modes Freq=xxxx.xx ERP=xxx MTL=xxx Diversity=xxx

TEST:AUTO:DIV TEST:AUTO:DIV? 0 or 1 Returns Diversity Test run status. TEST:AUTO:STARt Runs Auto Test. TEST:COUNt? 0 to 2147483647 Returns Data Update Counter

TEST:DIVersity? DIVERSITY -

SATURATED (when saturated)

Status

RUN or NO REPLY

Diversity=xxx

dB)

=PASSED, FAILED, NOT

=P (Pass) or F (Fail)

=(1 to 3 Modes-ACS)

(in MHz)

dBm, dBw or WATTS

dBm

(in dB)

=0 (Disable) or 1 (Enable) Sets Diversity Test run status.

Count (resets to 0 at start of test and increments with each new data update).

Status,Diversity

=PASSED, FAILED, NOT

(Valid Diversity in

Returns Diversit y Test data.

TEST:DIVersity:STARt Runs Diversity Test. TEST:FREQuency? FREQUENCY -

Status

RUN or NO REPLY

=PASSED, FAILED, NOT

Freq=xxxx.xx

MHz)

TEST:FREQuency:\ STARt

TEST:MTLDiff? MTL DIFFERENCE -

Status

RUN or NO REPLY

=PASSED, FAILED, NOT

Diff=xxx.x

between Modes A and C, in dB)

TEST:MTLDiff:STARt Runs MTL Difference Test.

Status,Freq

(UUT Frequency in

Status,Diff

(MTL difference

Returns Frequency Test data.

Runs Frequency Test.

Returns MTL Difference Test data.

ATC-601 Specific Commands

Table 9 (Cont)

1-2-5

Page 9

Jun 1/97

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OPERATION MANUAL ATC-601

COMMAND RANGE DEFINITION

TEST:POWer? POWER -

Status,Status Flags

Returns Power Test data.

Antenna,ERP,MTL

Status

RUN or NO REPLY

Status Flags

(2 flags/ERP,MTL power tests)

Antenna

ERP=xxx.x

MTL=xxx.x

TEST:POWer:STARt Runs Power Test. TEST:POWer:UNIT

TEST:POWer:UNIT? dBm, dBw or WATTS (default

TEST:RDELay? REPLY DELAY -

dBm)

Flags,Mode S,ITM A,ITM C

=PASSED, FAILED, NOT

=P (Pass) or F (Fail)

=TOP or BOTTOM

dBm, dBw or WATTS

dBm (*** - multipath)

=DBM, DBW or WATTS Sets ERP measurement units for

Power Test. Returns ERP measurement units.

Status,Status

Returns Reply De lay Test data.

ATC A,ATC C

Status

RUN or NO REPLY

Status Flags

(5 flags/Mode S, ITM A, ITM C,

ATC A, ATC C)

Mode S=xxx.xx

ITM A=xxx.xx

ITM C=xxx.xx

ATC A=x.xx

ATC C=x.xx

=PASSED, FAILED, NOT

=P (Pass) or F (Fail)

(in µs)

(in µs) TEST:RDELay:STARt Runs Reply Delay Test. TEST:RECall TEST:RJITter? REPLY JITTER -

=1 or 2 (Memory Location) Recalls test data.

Flags,Mode S,ITM A,ITM C

Status,Status

Returns Reply Ji tter Test data.

ATC A,ATC C Status

RUN or NO REPLY

Status Flags

(5 flags/Mode S, ITM A, ITM C, ATC A, ATC C)

Mode S=x.xx ITM A=x.xx ITM C=x.xx ATC A=x.xx ATC C=x.xx

TEST:RJITter:STARt Runs Reply Jitter Test. TEST:RUNning? 0 (Test not running) or 1 (Test

running)

=PASSED, FAILED, NOT

=P (Pass) or F (Fail)

(in µs) (in µs) (in µs)

(in µs)

Returns test running status

ATC-601 Specific Commands

Table 9 (Cont)

1-2-5

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OPERATION MANUAL ATC-601

COMMAND RANGE DEFINITION

TEST:SELF? SELF -

Status,Status Flags

Returns Self Test data.

Failure Code Status

RUN or NO REPLY

Status Flags

(3 flags/RF Module, Digital Module, Power Supply/Battery)

Failure Code

Table 2.) (only with failure) TEST:SELF:STARt Runs Self Test. TEST:SLSLevel? SLS LEVEL -

=PASSED, FAILED, NOT

=P (Pass) or F (Fail)

=(Refer to 1-2-3,

Status,Status

Returns SLS Level Test data.

Flags,-9dB,0dB

Status

RUN or NO REPLY

Status Flags

(2 flags/-9dB, 0dB)

-9dB

0dB

TEST:SLSLevel:STARt Runs SLS Level Test. TEST:SPR? SPR -

Status

RUN or NO REPLY

Status Flags

(2 flags/On, Off)

Off

=PASSED, FAILED, NOT

=P (Pass) or F (Fail)

=REPLY or NO REPLY

Status,Status Flags,On,Off

=PASSED, FAILED, NOT

=P (Pass) or F (Fail)

=REPLY or NO REPLY

Returns SPR On/Off Test data.

TEST:SPR:STARt Runs SPR On/Off Test. TEST:SQTR? SQUITTER -

Status,Period,Tail

Returns Squitter Test data.

Number,Squitter Address

Status

RUN or NO REPLY

Period=xx.xx

in seconds)

Tail Number

Squitter Address

hexadecimal TEST:SQTR:STARt Runs Squitter Test. TEST:STOP Stops current test. TEST:STORe

=PASSED, FAILED, NOT

(between squitters

=6 ASCII characters

=24 bit/

=1 or 2 (Memory Location) Stores test data.

ATC-601 Specific Commands

Table 9 (Cont)

1-2-5

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OPERATION MANUAL ATC-601

COMMAND RANGE DEFINITION

TEST:UF0:DDATa? MODE S UF0 -

Status,Status

Returns Mode S UF0 Test data.

Flags,DF,VS,RI,AC,Address Status

RUN or NO REPLY

Status Flags

(3 flags/DF, AC, Address)

DF VS RI AC Address

(Refer to Appendix B for Downlink

Format field definitions.) TEST:UF0:STARt? Runs Mode S UF0 Test. TEST:UF4:DDATa? MODE S UF4 -

=PASSED, FAILED, NOT

=P (Pass) or F (Fail)

=5 bits/decimal =1 bit/decimal

=4 bits/hexadecimal

=13 bits/decimal

=24 bit/hexadecimal

Status,Status

Returns Mode S UF4 Test data.

Flags,DF,FS,DR,UM,AC,Address

Status

RUN or NO REPLY

Status Flags

(3 flags/DF, AC, Address)

Address

(Refer to Appendix B for Down-

link Format field definitions.)

=PASSED, FAILED, NOT

=P (Pass) or F (Fail)

=5 bits/decimal

=3 bits/decimal

=5 bits/hexadecimal =6 bits/hexadecimal

=13 bits/decimal

=24 bit/hexadecimal

TEST:UF4:STARt Runs Mode S UF4 Test. TEST:UF5:DDATa? MODE S UF5 -

Status,Status

Returns Mode S UF5 Test data.

Flags,DF,FS,DR,UM,ID,Address

Status

RUN or NO REPLY

Status Flags

(3 flags/DF, ID, Address)

Address

(Refer to Appendix B for Downlink

Format field definitions.) TEST:UF5:STARt Runs Mode S UF5 Test.

=PASSED, FAILED, NOT

=P (Pass) or F (Fail)

=5 bits/decimal

=3 bits/decimal

=5 bits/hexadecimal =6 bits/hexadecimal

=13 bits/octal

=24 bit/hexadecimal

ATC-601 Specific Commands

Table 9 (Cont)

1-2-5

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OPERATION MANUAL ATC-601

COMMAND RANGE DEFINITION

TEST:UF11:DDATa? MODE S UF11 -

Status,Status

Returns Mode S UF11 Test data.

Flags,DF,CA,PI,AA Status

RUN or NO REPLY

Status Flags

(2 flags/DF, AA)

DF CA PI AA

(Refer to Appendix B for Downlink

Format field definitions.) TEST:UF11:STARt Runs Mode S UF11 Test. TEST:UF16:DDATa? MODE S UF16 -

=PASSED, FAILED, NOT

=P (Pass) or F (Fail)

=5 bits/decimal =3 bits/decimal

=24 bits/hexadecimal

=24 bit/hexadecimal

Status,Status

Returns Mode S UF16 Test data.

Flags,DF,VS,RI,MV,AC,Address

Status

RUN or NO REPLY

Status Flags

(3 flags/DF, AC, Address)

Address

(Refer to Appendix B for Downlink

Format field definitions.)

=PASSED, FAILED, NOT

=P (Pass) or F (Fail)

=5 bits/decimal =1 bit/decimal

=4 bits/hexadecimal

=56 bits/hexadecimal

=13 bits/decimal

=24 bit/hexadecimal

TEST:UF16:STARt Runs Mode S UF6 Test. TEST:UF20:DDATa? MODE S UF20 -

Flags,DF,FS,DR,UM,MB,AC

Status,Status

Returns Mode S UF20 Test data.

Address

Status

RUN or NO REPLY

Status Flags

(3 flags/DF, AC, Address)

Address

(Refer to Appendix B for Downlink

Format field definitions.) TEST:UF20:STARt Runs Mode S UF20 Test.

=PASSED, FAILED, NOT

=P (Pass) or F (Fail)

=5 bits/decimal

=3 bits/decimal

=5 bits/hexadecimal

=6 bits/hexadecimal

=56 bits/hexadecimal

=13 bits/decimal

=24 bit/hexadecimal

ATC-601 Specific Commands

Table 9 (Cont)

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OPERATION MANUAL ATC-601

COMMAND RANGE DEFINITION

TEST:UF21:DDATa? MODE S UF21 -

Flags,DF,FS,DR,UM,MB,ID

Status,Status

Address Status

RUN or NO REPLY

Status Flags

(3 flags/DF, AC, Address)

DF FS DR UM MB ID Address

(Refer to Appendix B for Downlink Format field definitions.)

TEST:UF21:STARt Runs Mode S UF21 Test.

TEST:UF0:UDATa

TEST:UF0:UDATa? 0 or 1 (RL),0 or 1 (AQ) Returns UF0 data. TEST:UF4:UDATa

(Refer to Appendix B for Uplink Format field definitions.)

0 to 7 (DI),#H0 to #HFFFF (SD) (Refer to Appendix B for Uplink Format field definitions.)

=PASSED, FAILED, NOT

=P (Pass) or F (Fail)

=5 bits/decimal

=3 bits/decimal

=5 bits/hexadecimal =6 bits/hexadecimal =56 bits/hexadecimal

=13 bits/octal

=24 bit/hexadecimal

UPLINK DATA COMMANDS

=0 or 1 (RL),0 or 1 (AQ)

=0 to 7 (PC),#H0 to #H1F (RR),

Sets UF0 data fields.

Sets UF4 data fields.

TEST:UF4:UDATa? 0 to 7 (PC),#H0 to #H1F (RR),

0 to 7 (DI),#H0 to #HFFFF (SD)

TEST:UF5:UDATa

TEST:UF5:UDATa? 0 to 7 (PC),#H0 to #H1F (RR),0 to

TEST:UF11:UDATa

TEST:UF11:UDATa? #H0 to #HF (PR),#H0 to #HF (II) Returns UF11 data. TEST:UF16:UDATa

TEST:UF16:UDATa? 0 or 1 (RL),0 or 1 (AQ),#H0 to

=0 to 7 (PC),#H0 to #H1F (RR),0 to 7 (DI),#H0 to #HFFFF (SD) (Refer to Appendix B for Uplink Format field definitions.)

7 (DI),#H0 to #HFFFF (SD)

=#H0 to #HF (PR),#H0 to #HF (II) (Refer to Appendix B for Uplink Format field definitions.)

=0 or 1 (RL),0 or 1 (AQ),#H0 to #HFFFFFFFFFFFFFF (MU) (Refer to Appendix B for Uplink Format field definitions.)

#HFFFFFFFFFFFFFF (MU)

Returns UF4 data.

Sets UF5 data fields.

Returns UF5 data.

Sets UF11 data fields.

Sets UF16 data fields.

Returns UF16 data.

ATC-601 Specific Commands

Table 9 (Cont)

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OPERATION MANUAL ATC-601

COMMAND RANGE DEFINITION

TEST:UF20:UDATa

TEST:UF20:UDATa? 0 to 7 (PC),#H0 to #H1F (RR),0 to

TEST:UF21:UDATa

TEST:UF21:UDATa? 0 to 7 (PC),#H0 to #H1F (RR),0 to

TEST:UF:UDATa:\ DEFault

=0 to 7 (PC),#H0 to #H1F (RR),0 to 7 (DI),#H0 to #HFFFF (SD),#H0 to #HFFFFFFFFFFFFFF (MA) (Refer to Appendix B for Uplink Format field definitions.)

7 (DI),#H0 to #HFFFF (SD),#H0 to #HFFFFFFFFFFFFFF (MA)

=0 to 7 (PC),#H0 to #H1F (RR),0 to 7 (DI),#H0 to #HFFFF (SD),#H0 to #HFFFFFFFFFFFFFF (MA) (Refer to Appendix B for Uplink Format field definitions.)

7 (DI),#H0 to #HFFFF (SD),#H0 to #HFFFFFFFFFFFFFF (MA)

ATC-601 Specific Commands

Table 9 (Cont)

Sets UF20 data fields.

Returns UF20 data.

Sets UF21 data fields.

Returns UF21 data.

Sets data for all UF interrogations to initial default settings. Refer to Appendix B, Table 6.

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5.2.3 TEST:ALL? and Data Dump Information

OPERATION MANUAL ATC-601

The TEST:ALL? query reply and the test data transmitted to the Host System when activating DUMP TEST DATA = 0 in the Setup#2 Menu Screen contain the same information. The TEST:ALL? query reply separates each set of individual test or data information with a semicolon. The data dump places each set of individual test or data information at the start of a new line.

NOTE: Data dumps do not require

installation of Option 1.

Data

Data dumps and TEST:ALL? query replies contain the following:

*IDN? query reply TEST:SELF? query reply TEST:AUTO? query reply TEST:RDELay? query reply TEST:RJITter? query reply TEST:ATCReply? query reply TEST:SLSLevel? query reply TEST:AC:ATC? query reply TEST:AC:S? query reply TEST:ADDRess? query reply TEST:SPR? query reply TEST:UF0:DDATa? query reply TEST:UF4:DDATa? query reply TEST:UF5:DDATa? query reply TEST:UF11:DDATa? query reply TEST:UF16:DDATa? query reply TEST:UF20:DDATa? query reply TEST:UF21:DDATa? query reply TEST:SELF? query reply TEST:SQTR? query reply TEST:FREQuency? query reply TEST:DIVersity? query reply TEST:MTLDiff? query reply TEST:POWer? query reply

Examples

The following is an example of a TEST:ALL? query reply:

IFR SYSTEMS INC,ATC-601,0,0106-0100; SELF - PASSED,PPF,#H10;AUTO - FAILED,PP,ACS,AC,S,1090,156 WATTS,73 dBm,25;REPLY DELAY - FAILED, FPPPP,129.05,128.02,128.04,3.02,3.10; REPLY JITTER - PASSED,PPPPP,.03,.05, .05,.1,.07;ATCRBS REPLY - PASSED, PPPPP,20.3,20.3,.45,.45,.45,.45,ID,#Q777, 10700;SLS LEVEL - PASSED,PP,REPLY, NO REPLY;ATC ALL CALL - PASSED,0; MODE S ALL CALL - PASSED,0,N12345, #H3AC421;INVALID ADDRESS - PASSED, 0,,;SPR - PASSED,PP,REPLY,NO REPLY; MODE S UF0 - PASSED,PPP,0,1,#HC, 10700,#H3AC421;MODE S UF4 - PASSED, PPP,4,1,#H0,#H0,10700,#H3AC421; MODE S UF5 - PASSED,PPP,5,1,#H0,#H0, #Q7777,#H3AC421;MODE S UF11 - PASSED,PP,11,1,#H0,#H3AC421;MODE S UF16 - PASSED,PPP,16,0,#H0,#H0,10700, #H3AC421;MODE S UF20 - PASSED,PPP, 20,0,#H0,#H0,#H0,10700,#H3AC421;MODE S UF21 - PASSED,PPP,21,0,#H0,#H0,#H0, #Q7777,#H3AC421;SQUITTER - PASSED, 1,N12345,#H3AC421;FREQUENCY - PASSED,1092.3;DIVERSITY - PASSED,27, #H3AC421;MTL DIFFERENCE - PASSED, .2;POWER - PASSED,PP,TOP,156 WATTS,

-73.4 dBm

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OPERATION MANUAL ATC-601

5.3 RECOMMENDED TEST PROCEDURES

The following is an example of a data dump containing the same information as the TEST:ALL? query reply in the previous example:

IFR SYSTEMS INC,ATC-601,0,0106-0100

SELF - PASSED,PPF,#H10 AUTO - FAILED,PP,ACS,AC,S,1090,

156 WATTS,-73 dBm,25

REPLY DELAY -

FAILED,FPPPP,129.05,128.02,128.04,3.02,

3.10

REPLY JITTER -

PASSED,PPPPP,.03,.05,.05,.1,.07

ATCRBS REPLY -

PASSED,PPPPP,20.3,20.3,.45,.45,.45,.45, ID,#Q777,10700 SLS LEVEL - PASSED,PP,REPLY,NO REPLY

ATC ALL CALL - PASSED,0 MODE S ALL CALL - PASSED,0,N12345,

#H3AC421

INVALID ADDRESS - PASSED,0, SPR - PASSED,PP,REPLY,NO REPLY MODE S UF0 - PASSED,PPP,0,1,#HC,

10700,#H3AC421 MODE S UF4 - PASSED,PPP,4,1,#H0,#H0, 10700,#H3AC421 MODE S UF5 - PASSED,PPP,5,1,#H0,#H0, #Q7777,#H3AC421 MODE S UF11 - PASSED,PP,11,1,#H0, #H3AC421 MODE S UF16 - PASSED,PPP,16,0,#H0, #H0,10700,#H3AC421 MODE S UF20 - PASSED,PPP,20,0,#H0, #H0,#H0,10700,#H3AC421 MODE S UF21 - PASSED,PPP,21,0,#H0, #H0,#H0,#Q7777,#H3AC421

SQUITTER - PASSED,1,N12345,#H3AC421 FREQUENCY - PASSED,1092.3 DIVERSITY - PASSED,27,#H3AC421 MTL DIFFERENCE - PASSED,.2 POWER - PASSED,PP,TOP,156 WATTS,

-73.4 dBm

5.3.1 General

Do not change data when DIAGnostics:STARt or any TEST:

Test

:STARt (

Test

=specific test) command has been initiated (test is running). Change data only when tests are not currently running. The TEST:STOP command can be issued as many times as needed without causing problems. However, all tests, except Auto Test, do not automatically stop.

NOTE: The TEST:SELF:STARt command

shuts off all interrupts including RS-232. Remote commands sent during Self Test are disregarded and lost. Do not send RS-232 commands for duration of the Self Test (≈10 seconds).

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5.3.2 Procedures

OPERATION MANUAL ATC-601

Other than Auto Test

STEP PROCEDURE

1. Send TEST:

Test

=specific test to run.)

(

Test

:STARt command.

2. Send TEST:COUNt? quer y.

3. Loop previous query until data changes.

Test

4. Send TEST:

? query.

5. Loop to the TEST:COUNt? query to collect more data.

6. Send TEST:STO P command.

Auto Test

STEP PROCEDURE

1. Send TEST:AUTO :STARt command.

2. Send TEST:RUNning? query.

3. Loop previous query until zero .

4. Send TEST:AUTO ? command.

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OPERATION MANUAL ATC-601

SECTION 3 - SPECIFICATIONS

1. ATC-601 TRANSPONDER RAMP TEST SET SPECIFICATIONS

1.1 SIGNAL GENERATOR

Output Frequency: 1030 MHz (±10 kHz), DCXO contro lled Level: -57 to -7 dBm typically, into 50 Ω (Automatically

controlled to determine receiver sensitivity [MTL] for the selected range and 4 dB typically, higher than MTL for test interrogations)

Test Antenna: Remote antenna VSWR <1.5:1

Gain: 10 dB typically, specified on the antenna Range: 6 feet (1.83 meters) to 300 feet (91.44 meters)

1.2 TEST SIGNA LS (INTERROGATIONS)

Rate: 235 Hz PRF (±5 Hz) Interlace Ratio (MTL

Interrogations to Test Interrogations):

ATCRBS: 2:1 Mode S: 8:1

Modes: A, C, S, Intermode

NOTE: The ATC-601 inter rogates with the mode(s) necessary to run selected test.

1.3 PULSE CHARACTERISTICS (MEASURED AT 50% AMPLITUDE POINTS)

Spacing:

Mode A:

to P2: 2.00 µs (±50 ns)

to P3: 8.00 µs (±50 ns)

Mode C:

to P2: 2.00 µs (±50 ns)

to P3: 21.00 µs (±50 ns)

Mode S:

to P2: 2.00 µs (±50 ns)

to P6: 3.50 µs (±50 ns)

to SPR: 4.75 µs (±50 ns)

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Spacing (continued):

Intermode:

Mode A:

to P3: 8.00 µs (±50 ns)

to P4: 10.00 µs (±50 ns)

Mode C:

to P3: 21.00 µs (±50 ns)

to P4: 23.00 µs (_50 ns)

Widths:

Mode A:

, P2, P3: 0.80 µs ( ±50 ns)

Mode C:

, P2, P3: 0.80 µs ( ±50 ns)

Mode S:

OPERATION MANUAL ATC-601

, P2: 0.80 µs (±50 ns)

(Short): 16.25 µs ( ±50 ns)

(Long): 30.25 µs (±50 ns)

Intermode:

, P2, P3: 0.80 µs ( ±50 ns)

(Short): 0.80 µs ( ±50 ns)

(Long): 1.60 µs (±50 ns)

Rise and Fall Times:

Rise time (all modes): 50 to 100 ns Fall time (all modes): 50 to 200 ns

Phase Modulation:

Transition time: ≤80 ns Phase shift: 180° (±10°)

Amplitude Levels:

SLS Level (P

): -9 dB (±1 dB) and 0 dB relative to P1 level

NOTE: SLS Level is automatically controlled in the SLS LEVEL Test.

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OPERATION MANUAL ATC-601

1.4 UUT MEASUREMENTS (REPLIES)

XMTR Frequency:

Range: 1087 to 1093 MHz Accuracy: ±50 kHz Resolution: 10 kHz

XMTR Power (at 1090 MHz):

Direct Connection-Peak Pulse Power:

Range: +46.5 to +59 dBm (45 to 800 W) Accuracy: ±1 dB Resolution: 0.1 dB

Effective Radiated Power (ERP):

Range: +48.5 to +57 dBm (71 to 500 W)

Receiver Sensitivity:

Direct Connection - Minimum Triggering Level (MTL):

Range: -67 to -79 dBm Accuracy: ±2 dB

Radiated Field Strength (MTL):

Range: -69 to -77 dBm into 0 dBi antenna

Reply Delay:

ATCRBS:

Range: 1.80 to 7.00 µs Accuracy: ±100 ns

Mode S and ATCRBS/Mode S All-Call:

Range: 125.00 to 131.00 µs Accuracy: ±100 ns

(-77 dB W/m

to -85 dB W/m2)

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OPERATION MANUAL ATC-601

Reply Jitter:

ATCRBS:

Range: 0.00 to 2.30 µs Accuracy: ±50 ns

Mode S and ATCRBS/Mode S All-Call:

Range: 0.00 to 6.00 Accuracy: ±50 ns

to F2 Spacing:

Range: 19.70 to 21.60 µs Accuracy: ±50 ns

and F2 Pulse Width:

Range: 0.25 to 1.00 µs Accuracy: ±50 ns

Squitter Period:

Range: 0.10 to 4.88 seconds Accuracy: ±10 ms

Diversity Isolation:

Range: 0 to >20 dB (depending on Antenna Range) Antenna Range: 6 feet (1.83 meters) to 50 feet (15.24 meters) Accuracy: ±3 dB

SLS Test (at MTL + 10 dB):

Antenna Range: 6 feet (1.83 meters) to 95 feet (28.96 meters)

1.5 BATTERY OPERATION

Duration: ≥2 hours before recharge at 25° C Automatic shutoff: after 15 minutes of non-use

1.6 POWER REQUIREMENT S

Source Voltage and Frequency: 100 to 120 VAC, 60 Hz

220 to 240 VAC, 50 Hz

Power Consumption: 37 W Maximum

30 W Nominal at 115 VAC 22 W Nominal at 230 VAC

Nominal Input Current: 0.36 A at 115 VAC

0.18 A at 230 VAC

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OPERATION MANUAL ATC-601

1.7 FUSE REQUIREMEN TS

F1 and F2:

100 to 120 VAC: 1.0 A, 250 V, Type F 220 to 240 VAC: 0.5 A, 250 V, Type F

1.8 SAFETY

This instrument is designed to comply with the requirements of EN61010-1/IEC1010-1, for Class 1 portable equipment and is for use in a pollution degree 2 environment. The equipment is designed to operate from an installation category II supply, to environmental conditions specified in paragraph 1.4 of EN61010-1.

1.9 OPERATIONAL ENVIRONMENTAL CONSIDERATIONS

This instrument operates over temperature extremes of -20° to +50° C.

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1. SHIPPING TEST SETS

OPERATION MANUAL ATC-601

SECTION 4 - SHIPPING

1.1 INFORMATION

IFR Test Sets returned to factory for calibration, service or repair must be repackaged and shipped according to the following conditions:

Authorization

Do not return any products to factory without first receiving authorization from IFR Customer Service Department.

CONTACT: I FR Systems, Inc.

Customer Service Telephone: 800-835-2350

FAX: 316-524-2623

Tagging Test Sets

All Test Sets must be tagged with:

●

Identification and address of owner.

●

Nature of service or repair required.

●

Model Number.

1.2 REPACKING PROCEDURE

● Make sure bottom packing mold is

seated on floor of shipping container.

● Carefully wrap Test Set with

polyethylene sheeting to protect finish.

● Place Test Set into shipping container,

making sure Test Set is securely seated in bottom packing mold.

● Place top packing mold over top of Test

Set and press down until mold rests solidly in bottom packing mold.

● Close shipping container lids and seal

with shipping tape or an industrial stapler. Tie all sides of container with break resistant rope, twine or equivalent.

●

Serial Number.

Shipping Containers

Test Sets must be repackaged in original shipping containers using IFR packing molds. If original shipping containers and materials are not available, contact IFR Customer Service for shipping instructions.

Freight Costs

All freight costs on non-warranty shipments are assumed by the customer. (See

“Warranty Packet” for freight charge policy on warranty claims.)

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HOLD DOWN STRAP

OPERATION MANUAL ATC-601

TOP PACKING MOLD

TEST INSTRUMENT WRAPPED WITH POLYETHYLENE SHEETING

IFR SHIPPING CONTAINER

Repacking Procedure

Figure 1

BOTTOM PACKING MOLD

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OPERATION MANUAL ATC-601

SECTION 5 - STORAGE

1. STORING TEST SETS

Perform the following storage precautions whenever the Test Set is stored for extended periods:

●

Disconnect Test Set from any electrical

power source.

●

Disconnect and store ac power cable

and other accessories with Test Set.

●

Cover Test Set to prevent dust and

debris from covering and entering Test Set.

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OPERATION MANUAL ATC-601

APPENDIX A - CONNECTOR PIN-OUT TABLES

1. TABLE OF I/O CONNECTORS

CONNECTOR TYPE SIGNAL NAME SIGNAL TYPE INPUT/OUTPUT

J10050 CORCOM AC PWR ac Line Power INPUT J10053 LEMO COMM RS-232C INPUT/OUTPUT

Refer to Appendix A, Table 2 for COMM Connector Pin-Out description.

J10054 BNC REPLY VIDEO VIDEO (Direct

J10055 BNC J10056 BNC MONITOR TTL VIDEO OUTPUT J10057 BNC ANTENNA RF INPUT/OUTPUT J10058 TNC RF I/O RF INPUT/OUTPUT

SYNC

I/O Connectors

Table 1

2. COMM CONNECTOR (J10053) PIN-OUT TABLE

Connection

Only)

TTL OUTPUT

OUTPUT

PIN NO. SIGNAL NAME SIGNAL TYPE INPUT/OUTPUT POLARITY

1 EXT SYNC TTL OUTPUT RISING EDGE 2 EXT PULSE TTL INPUT ACTIVE LOW 3 EXT DPSK IN TTL INPUT 4 EXT DPSK OUT CMOS OUTPUT 5 SPARE 6 TXD BIPOLAR OUTPUT 7 DTR BIPOLAR OUTPUT ACTIVE LOW 8 RXD BIPOLAR INPUT 9 CTS BIPOLAR INPUT ACTIVE LOW

10 GND OUTPUT GROUND

Pin-Out for COMM Connector

Table 2

APPENDIX A

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APPENDIX A

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APPENDIX B - SIGNAL FORMATS

1. OPERATING GOALS

OPERATION MANUAL ATC-601

Mode S combines secondary surveillance radar and a ground-air-ground data link system to provide aircraft surveillance and communications necessary for supporting automated ATC in dense traffic environments. Mode S provides commonchannel interoperation with the ATC beacon system and may be implemented over an extended ATCRBS-to-Mode S transition period. In supporting ATC automation, Mode S provides the reliable communications necessary for data link services.

2. MODE S MESSAGE CONTENT

2.1 ADDRESS/PARITY (FIELD AP)

All discrete Mode S interrogations (56-bit or 112-bit) and replies (except the All Call reply) contain the 24-bit discrete address of the Mode S transponder upon which 24 error-detecting parity check bits are overlaid. In the All Call reply, the 24 parity check bits are overlaid on the address of the Mode S interrogator. The text of the reply includes the discrete address of the transponder.

2.3 DATA LINK COMMUNICATIONS

The discrete addressing and digital encoding allow Mode S transmissions to be used as digital data links. Interrogation and reply formats of the Mode S system contain sufficient coding space to transmit data. Most Mode S data link transmissions are handled as one 56-bit message included as part of long 112-bit interrogations or replies. The transmissions include the message in addition to surveillance data, and is generally used in place of a surveillance interrogation and/or reply.

An efficient transmission of longer messages is accomplished by the extended length message (ELM) capability (UF24 and DF24). Using this capability, a sequence of up to sixteen 80-bit message segments (each with a 112-bit transmission) is transmitted, either ground-to-air or air-toground and is acknowledged with a single reply/interrogation. ELMs do not contain surveillance data and thus cannot substitute for a surveillance interrogationreply cycle.

2.2 SURVEILLANCE

The primary function of Mode S is surveillance. For the Mode S transponder, this function is accomplished by using short (56-bit) transmissions in both directions. In these transmissions, the aircraft reports altitude (DF04) or ATCRBS 4096 code as well as flight status (airborne, on the ground, alert, Special Position Identification [SPI], etc.).

3. SIGNAL FORMATS

Signal formats for uplink and downlink messages are outlined in Chapter 2, RTCA DO-181 and Chapter 2, Volume I of RTCA DO-185. Tables 1, 2, 3, 4 and 5 in Appendix B contain the signal formats and definitions. Data is expressed in decimal unless otherwise specified. Refer to Appendix B, Table 6 for conversion to hexadecimal, octal or binary. Appendix B, Table 7 shows the ATC-601 fixed formats for Mode S using Front Panel operation.

NOTE: TCAS operates in Mode S and

many signals pertain only to TCAS.

APPENDIX B

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OPERATION MANUAL ATC-601

FORMAT

NO. UF

0 (0 0000)  3 (RL:1) 4 (AQ:1) (BD:8) 10  (AP:24) .........Short Air-Air Surveillance

1 (0 0001)  27 or 83  (AP:24) 2 (0 0010)  27 or 83  (AP:24) 3 (0 0011)  27 or 83  (AP:24) 4 (0 0100) (PC:3) (RR:5) (DI:3) (SD:16) (AP:24) .. Surveillance, Altitude Request 5 (0 0101) (PC:3) (RR:5) (DI:3) (SD:16) (AP-24).. Surveillance, Identity Request 6 (0 0110)  27 or 83  (AP:24) 7 (0 0111)  27 or 83  (AP:24) 8 (0 1000)  27 or 83  (AP:24)

9 (0 1001)  27 or 83  (AP:24) 10 (0 1010)  27 or 83  (AP:24)

11 (0 1011) (PR:4) (II:4) 19  (AP:24) ................Mode S Only All Call

12 (0 1100)  27 or 83  (AP:24) 13 (0 1101)  27 or 83  (AP:24) 14 (0 1110)  27 or 83  (AP:24) 15 (0 1111)  27 or 83  (AP:24)

16 (1 0000)  3 (RL:1) 4 (AQ:1) 18 (MU:56) (AP:24) ......... Long Air-Air Surveillance

17 (1 0001)  27 or 83  (AP:24) 18 (1 0010)  27 or 83  (AP:24) 19 (1 0011)  27 or 83  (AP:24)

20 (1 0100) (PC:3) (RR:5) (DI:3) (SD:16) (MA:56) (AP:24) ........Comm-A, Altitude Request

21 (1 0101) (PC:3) (RR:5) (DI:3) (SD:16) (MA:56) (AP:24) ........ Comm-A, Identity Request

22 (1 0110)  27 or 83  (AP:24) 23 (1 0111)  27 or 83  (AP:24)

24 (1 1xxx) (RC:2) (NC:4) (MC:80) (AP:24) ....................... Comm-C (ELM)

NOTE: (XX:M) represents a field designated XX containing M number of assigned bits. NOTE: N represents free coding space with N available bits, coded as Zer os for

transmission.

NOTE: For Uplink Formats (UF) 0 through 23, the format number corr esponds to the binary

code in the first 5 bits of the interrogation. Format number 24 is arbitrarily defined as the format beginning with Ones in the first two bit positions. The following three bits (xxx) vary with the interrogation content.

NOTE: All formats are shown for completeness, although a number of them are unused.

Overview of Mode S Interrogation Formats

Table 1

APPENDIX B

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OPERATION MANUAL ATC-601

FORMAT

NO. DF

0 (0 0000) (VS:1) (CC:1)-1-(SL:3)-2-(RI:4)-2-(AC:13) (AP:24) ........Short Air-Air Surveillance

1 (0 0001)  27 or 83  (P:24) 2 (0 0010)  27 or 83  (P:24) 3 (0 0011)  27 or 83  (P:24)

4 (0 0100) (FS:3) (DR:5) (UM:6) (AC:13) (AP:24) ..... Surveillance, Altitude Reply

5 (0 0101) (FS:3) (DR:5) (UM:6) (ID:13) (AP-24) ..... Surveillance, Identity Reply

6 (0 0110)  27 or 83  (P:24) 7 (0 0111)  27 or 83  (P:24) 8 (0 1000)  27 or 83  (P:24)

9 (0 1001)  27 or 83  (P:24) 10 (0 1010)  27 or 83  (P:24)

11 (0 1011) (CA:3) (AA:24) (PI:24) ............. All Call Reply/Squitter

12 (0 1100)  27 or 83  (P:24) 13 (0 1101)  27 or 83  (P:24) 14 (0 1110)  27 or 83  (P:24) 15 (0 1111)  27 or 83  (P:24)

16 (1 0000) (VS:1)-2-(SL:3)-2-(RI:4)-2-(AC:13)(MV:56)(AP:24) ......... Long Air-Air Surveillance

17 (1 0001) (CA:3) (AA:24) (ME:56) (PI:24) ................... Extended Squitter

18 (1 0010)  27 or 83  (P:24) 19 (1 0011)  27 or 83  (P:24)

20 (1 0100) (FS:3) (DR:5) (UM:6) (AC:13) (MB:56) (AP:24) .......... Comm-B, Altitude Reply

21 (1 0101) (FS:3) (DR:5) (UM:6) (ID:13) (MB:56) (AP:24) ........... Comm-B, Identity Reply

22 (1 0110)  27 or 83  (P:24) 23 (1 0111)  27 or 83  (P:24)

24 (1 1xxx) (KE:1) (ND:4) (MD:80) (AP:24) ....................... Comm-D (ELM)

NOTE: (XX:M) represents a field designated XX containing M number of assigned bits. NOTE: (P:24) represents a 24-bit field reserved for parity information. NOTE: N represents free coding space with N available bits, coded as Zer os for

transmission.

NOTE: For Downlink Formats (DF) 0 through 23, the format number corr esponds to the

binary code in the first 5 bits of the reply. Format number 24 is arbitrarily defined as the format beginning with Ones in the first two bit positions. The following three bits (xxx) vary with the reply content.

NOTE: All formats are shown for completeness, although a number of them are unused.

Overview Of Mode S Reply Formats

Table 2

APPENDIX B

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IFR ATC-601-2 Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual