TIC TR-220 Operation Manual

TR-220

MULTIFUNCTION TEST SET

Transponder, TCAS, DME, TIS, and ADS-B

Test Set

Operational Ma nual

Software Revision 3.40 and Later

REVISION

A B C D E F G H J K L M N

P R S T U V W X Y Z

09 May 2007

Tel-Instrument Electronics Corp

728 Garden Street

Carlstadt, NJ 07072

[phone]

www.telinstrument.com

Leading the AVIONICS TEST industry into the 21st Century!

NOTICE:

The information contained in this manual is subject to change without notice.
Tel-Instrument Electronics Corp. makes no warranty of any kind to this material,

nor shall be liable including but not limited to, errors contained herein or for
incidental or consequential damages in connection with the furnishings,
performance, or use of this material.

Chapter I – Introduc tion
Chapter II – Preparation for Use and Operation
Chapter III – Theory of O per ation
Chapter IV – General Maintenance and Servicing Procedures
Chapter V – Schematics
Chapter VI – Ill ustr ated Parts Catalog

PART NUMBER VOLUMES INCLUDED CHAPTERS INCLUDED

90008088-1 VOLUME 1 CHAPTERS I & II
90008088-2 VOLUMES 1 & 2 CHAPTERS I - VI

COPYRIGHT NOTICE

© 2007 Tel-Instrument Electronics Corp

Reproduction of this publication or any portion thereof by any means without the
express written permission of Tel-Instrument Electronics Corp. is prohibited. For
further information, contact the Customer Support Manager, 728 Garden Street,
Carlstadt, NJ 07072. [phone]

A

Safety Precautions

The following ar e general safet y precauti ons that are not rel ated to a parti cul ar test or pr ocedure.
These are recommended procedures that all personnel must apply during many phases of
operation and m aintenance. It is assumed that the op erator has general knowledge of electrical
theory and the dangers associ ated with it.

1. When performing any of the preceding; thoroughly read and understand all
procedures before ac tually performing t hem.

2. The various front panel connectors, switches, and controls specified can be
located by refer ri ng to Figure 2-1 on page 2-3.

3. Take the time to learn the proper operation and function of the Test Set as
outlined in Chapters 1, 2, and 3. Through knowledge of the Test Set and its
capabiliti es greatly improves the time it t ak es to complete the tests.

4. Pay parti cular attenti on to NOTES and WARNINGS that may accompany some
test and operati onal procedures.

lerts the operator to potential dangers associated with a particular test.
Thoroughly understand the warning before proceeding to prevent a
potentially dangerous situation or dam age to the Test Set.

WARNINGS

NOTE

Provides supplemental informati on that enhanc es the procedure or

further explains in detail additional information to ensure understanding or

5. Observe all standard safety procedures when working with live voltages. The
potential f or electric shock exists any tim e the Test Set is removed from its case.

6. DO- NOT serv i ce the uni t or mak e adjustm ent s alone. Al ways be in t he presence
of another person when working with live voltages.

7. Thoroughly inspect the equipm ent and the local area for potent ial hazards. Loose
clothing and j ewelry should b e removed any time the test set is being ut ilized or
being serviced.

8. Be familiar with general first aid procedures and CPR (Cardiopulmonary
Resuscitation). Contact your local Red Cross f or m ore information.

NOTES

proper operati on.

9. Ensure the test equipment and the tools you utilize are in good operational

condition and not damaged in any way.

10. Use only specified replacement parts as listed in the IPB. Failure t o utilize factory
approved part s may cause damage to person nel; the test set’s, and possibly void
the warranty.

ESD Safety and Protection

Many parts contai ned in the Test Set are sensit ive to ESD (Electro-St atic Discharge) damage.
ESD can damage integrated cir c uits or semiconduct or s l oc ated within the Test Set. Only qual ified
personnel should serv ice the Test S et to prevent damage. The f ollowing are guideli nes to avoid
ESD damage while still performing tests and or maintenance. These guidelines are meant only as
a reminder, consult local directiv es and f ollow standard operat ing pr ocedures bef ore serv i cing, or
repairi ng the T est S et.

• Wear a properly grounded wrist strap and remain in contact with an approved grounding
point.

• Do not touch the connect or pins or back planes of ESD Sensitive circuits or par ts.

• Ensure solderi ng ir ons are grounded before use.

• Do not remove any components or disconnect any connectors locat ed in the Test Set with

the power “ON”.

• Properly ground all test equipment being utilized. Refer to the test equipment operating
manual for information.

• Place all remov ed c om ponents or parts in or on an approved conductive package.

Most ESD devices or circuit s and common points are readily identifi ed utilizing several different
methods. Below are some ex am ples.

The Following S ymbols may be utilized in diff erent locations thr oughout the Manual and ar e also
located on and in the Test Set. Observe these warnings and markings and follow standard
electrical safety anytime you utilize live ci r c uits.

Caution Alternating Current

CE (IEC) Marking

Protective Conductor

Terminal

Caution, risk of

electrical shock

VOLUME 1

OPERATIONAL PROCEDURES

Rev E TR-220 90 008 088-1

TR-220 TABLE OF CHANGES1

Date REV ECO Page Description

Prelim. Initial Release

07 Sep 03 A Initial Release
15 July 04 B Updated procedure explanations

16 Mar 05 C

2-5 & 6, 13, 17,

22, 43-46

01 Jul 05 D Chapter 3-6 Added CHAPTERS 3, 4, 5, &6
9 May 07 E Chapter 1 and 2

Provided Detailed EHS and ADS setup
and display info

Add test capability for measuring reply
delay, jitter, MS P6 pulse amplitude
variation, and MS P5 pulse width

1

Changes are also denoted with a solid bar in the Left margin of each affected page.

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Table of Contents

Chapter Page

Table of Changes……………………………………………………………………. i
List of Illustrations…………………………………………………….……………… vii
List of Tables……………………………………………………….………………… viii

I INTRODUCTION

Section A- General Information

1.1 Scope of Manual…………………………………………………………… 1-1

1.2 Purpose and Function of Equipment…………………… ………… ……. . 1-1

1.3 Regulatory Responsibilities…………………………………………......... 1-2

1.4 Warranty…………………………………………………………………….. 1-3

1.4.1 Obtaining Warranty Service………………………………………… 1-3

1.4.1 Shipping and Packing the T est Set………………………………... 1-4

Section B- Equipment Description

1.5 Specifications………………………………………………………………… 1-5

1.6 Abbreviations, Acronyms, and Glossary of Terms…………………....... 1-7

II PREPARATION FOR USE AND OPERATION
Section A- General Information

2.1 General………………………………………………………………........... 2-1

2.2 Unpacking…………………………………………………………………… 2-1

2.3 Installation…………………………………………………………………… 2-1

2.4 Accessories…………………………………………………………………. 2-1

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Table of Contents (continued)

Chapter Page

Section B- Operating Controls, Indicators, and Connectors

2.5 General………………………………………………………………........... 2-3

2.6 Controls, Indicat ors, and Connectors……………………………………. 2-3

Section C- Operating Instructions

2.7 General………………………………………………………………........... 2-5

2.8 Battery Operation…………………………………………………………… 2-5

2.8.1 Auto-Shutdown………………………………………………….. 2-6

2.9 TR-220 Supplied Ant enna…………………………………………………. 2-6

2.9.1 Directional Antenna…………………………………………….. 2-6

2.9.2 Direct Connect………………………………………………….. 2-9

2.9.3 TAP-200 Antenna Coupler…………………………………….. 2-9

2.10 Initial Startup and Self-Test……………………………………………….. 2-12

2.11 Transponder Test Sequence……………………………………………… 2-13

2.12 Transponder Manual Sequence of Tests………………………………… 2-14

2.12.1 ATCRBS, Mode A/C Manual Testing………………………… 2-14

2.12.2 Mode S Manual Testing……………………………………….. 2-17

2.13 Transponder Automatic Sequence of T ests…………………………….. 2-24

2.13.1 ATCRBS, Mode A/C Automatic Testing……………………… 2-24

2.13.2 Mode S Automatic Testing…………………………………….. 2-26

2.14 Testing a Transponders “IDENT” Function……………………………… 2-28

2.15 TCAS Tests…………………………………………………………........... 2-29

2.15.1 Typical TCAS Concepts……………………………………….. 2-29

2.15.2 TCAS Scenario Selection and Setup …….……… ………….. 2-29

2.15.3 Erasing the TCAS Scenario Memory………………………… 2-35

2.15.4 Testing a TCAS Equipped Aircraft……………………………. 2-36

2.16 DME Tests………………….……………………………………………….. 2-41

2.16.1 DME Setup…….………………………………………………… 2-41

2.17 Mode S Enhanced Surveillance…………………………………………... 2-43

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Table of Contents (continued)

Chapter Page

2.18 ADS-B and TIS Testing……………………………………………………. 2-47

2.18.1 ADS-B TX……………………………………………………….. 2-47

2.18.2 ADS-B RX………………………………………………………. 2-50

2.19 RS-232 Download Procedures…………………………………………… 2-52

2.19.1 Setting Up your Computer for RS-232 Download………….. 2-53

2.19.2 Downloading the Data…………………………………………. 2-54

2.19.3 Loading the Data to a Microsoft Excel File………………….. 2-55

List of Illustrations (Figures)

Figure Title Page

1-1 TR-220 Multifunction Test Set…………………………… ………… …………. 1-1
2-1 TR-220 Accessories…………………………………………………………….. 2-2

2-2 Controls, Indicators, and Connector Locations………………………………. 2-3
2-3 Directional Antenna Gain……………………………………………………….. 2-7
2-4 Directional Antenna Setup……………………………………………………… 2-8
2-5 TAP-200………………………………………………………………………….. 2-10
2-6 TAP-200 Placement…………………………………………………………….. 2-11
2-7 TAP-200 Adjustment……………………………………………………………. 2-11
2-8 Sequence of Tests………………………………………………………………. 2-13
2-9 Caution, Warning, and Collision Areas……………………………………….. 2-29
2-10 Typical TCAS I Display…………………………………………………………. 2-30

List of Tabl e s

Table Title Page

2-1 TR-220 Accessories……………………………………………………………. 2-2
2-2 Controls, Indicators, and Connectors…………………… …………………… 2-4
2-3 Preprogrammed TCAS Scenarios……………………………………………. 2-30
2-4 TCAS Intruder Parameters…………………………………………………….. 2-33
2-5 Additional TCAS Intruder Scenarios…….……………………………………. 2-34
2-6 TIS Intruders…………………………………………………………………….. 2-51

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CHAPTER I

INTRODUCTION

SECTION A

1.1 Scope of Manual

This manual is intended to familiarize the operator with the operating and maintenance
procedures necessary to utilize the TR-220 Multifunction Test Set. Here-in after known as the
T/S, Test Set, or TR-220.

Figure 1-1

TR-220 Multifunction Test Set

1.2 Purpose and Function of the Equipment

The TR-220 Test Set tests airborne ATCRBS, MODE A/C, and MODE S transponders, TCAS I/II
systems, DME equipment, and ADS-B and TIS Transponders. It is self-contained and battery
operated that requires no direct hardware connection to the Unit Under Test (UUT).

For transponder testing, the Test Set simulates secondary radar to receive and radiate signals to
the UUT from antennas supplied with the Test Set. For accurate power and frequency

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measurements, the Test Set can be directly connected to the UUT without the use of additional
hardware.

For TIS testing, the Test Set transmits simulated Intruder Flight Data, which is then shown on the
TIS display to verify results.

The Test Set will receive and Decode 1090 MHz ADS-B data including squitter type, airborne
position, surface position, aircraft IDENT category, Airborne velocity, Latitude/Longitude,

North/South velocity, and East/W est Velocity. The ADS-B TX function allows the operator to
receive, decode, and display ADS-B squitters. The ADS-B RX function permits the operator to

simulate a 1090MHz squitter. The TR-220 can be configured to transmit an airborne or surface
position squitter containing position, altitude, velocity, heading, aircraft category, flight ID, and
Mode S address.

The simulation of an intruder aircraft converging on the Aircraft Under Test (AUT) accomplishes
TCAS testing. The simulated target will be displayed on the TCAS display so the operator can
ensure proper advisories.

DME tests simulate an aircraft at a simulated speed converging to or from a selected distance. By
comparing the Test Set displayed distance to the DME under test display, the operator can
confirm proper DME operation.

1.3 Regulatory Responsibilities

Effective April 6, 1987, The Federal Aviation Administration (FAA) has required certain tests be
performed on transponders, both conventional ATCRBS and MODE S. In preparation for the
installation of new air traffic control radar facilities, the FAA required new measurements to be
performed on existing transponders and instituted required tests for MODE S transponders. FAR
(Federal Aviation Regulation) Part 43, Maintenance, Preventive Maintenance, Rebuilding and
Alteration section has been modified to reflect current technologies and improvements. Tel­Instruments has met all FAA requirements and recommends that the user of this type of
equipment review the appropriate FAR or contact the manufacturer of their particular model of
transponder to ensure that the current procedures and limitations are being correctly adhered to.

Eurocontrol has also incorporated new regulations for Mode S Elementary and Enhanced
Surveillance. These requirements include Selective Identifiers for high-density traffic areas and
will become mandatory beginning in May of 2003 for Elementary Surveillance and March 2005 for
Enhanced Surveillance. The TR-220 Test Set has the capability to thoroughly test these new
functions to comply with upcoming requirements. If you would like further information regarding
these requirements, visit www.eurocontrol.int/

.

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1.4 Warranty

The Tel-Instrument Electronics Corporation warrants that each product it manufactures is free
from defective material and workmanship for a period of two (2) years subject to the following
terms and conditions. Tel-Instrument Electronics Corp. will remedy any such warranted defect
subject to the following:

This warranty requires the unit to be delivered by the owner to Tel-Instrument intact for
examination, with all transportation charges prepaid to the factory, within two (2) years from the
date of sale to original purchaser. Tel-Instrument will solely determine when such defect exists.

This warranty does not extend to any of Tel products which have been subject to misuse, neglect,
accident, improper installation, or used in violation of operating instructions. This warranty does
not extend to units which have been repaired, calibrated, or altered in any way by a facility that is
not approved, in writing, by Tel-Instrument Electronics Corp. to perform such work. This warranty
does not apply to any product where the seals or serial number thereof has been removed,
defaced or changed, nor to accessories not of our own manufacture.

Repair parts will be made available for a minimum period of five (5) years after the manufacture
of this equipment has been discontinued.

This warranty is in lieu of all other warranties expressed or implied and all such other warranties
are hereby expressly excluded. No representative or person is authorized to assume for us any
other liability or warranty in connection with the sale of Tel’s products.

This warranty does not cover or include batteries (batteries have a separate 90 day warranty).

Additional information with regard to the applications and maintenance of this equipment will be
available from time to time.

1.4.1 O btaining Warranty Service

In the event the Test Set may require service or repair that is included under the
warranty provided with the Test Set; the following is necessary to ensure proper
handling:

1. Contact Tel-Instrument Customer Support before shipping any Test Set
back under a warranty condition.

Tel-Instrument Electronics Corp. Customer Support can be reached by

calling:

¾ [phone] (telephone)

¾ [phone] (fax)

2. The Customer Support Department will discuss the matter and if validated,
issue an RMA (Return Material Authorization) number and form. Do not
return any product without first receiving this authorization.

3. The Test Set must be returned with the completed RMA form. This will
ensure prompt handling and expedited service.

4. Products must be returned in the Original Shipping Container (see
Paragraph 1.4.1). If the original container is no longer available, please
contact Tel-Instrument for guidance. Include in or on the shipping container
the following information:

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• RMA Form on top of the product

• The assigned RMA number written in bold letters on the

outside of the shipping container

• Model, Serial Number, and specific details regarding the

problem

• POC name, return address, telephone number, and

email address

5. Freight Charges to the factory are the responsibility of the owner/operator.
Tel-Instrument will provide return shipping if the problem is determined to be
warranty covered.

1.4.2 Shipping and Packing the Test Set

1. Repackage the Test Set in the Original container utilizing the provided
packing material. Do Not Ship the Test Set with out using a shipping

container, this will prevent damage to the case and or finish during transit.

2. Wrap the Test set within plastic sheeting and firmly seat the Test Set in
the original corner molds. Place all necessary documentation (RMA Form,
POC, etc…), on top of the Test Set.

3. Utilize Package Tape and seal all seams. If the use of an industrial box
stapler is used, be sure that they do not protrude through the box to
prevent injury to personnel handling the package.

4. Firmly affix a shipping label and mail the Test Set to the following:

Tel-Instrument Electronics Corp.

728 Garden Street

Carlstadt, NJ 07072

Attn: Repair Department

1-4

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SECTION B

EQUIPMENT DESCRIPTION

1.5 Specifications

Transponder Transmitter

Frequency 1030 MHz ± 10 kHz
Output Power >
Modes A, C, S, ADS B TX/RX,
and TIS

4dBm

Transponder Receiver

Accuracy ± 200 kHz

Accuracy ± 2 dB (direct connect)
± 3 dB (radiated)

Accuracy ± 2 dB (direct connect)
± 3 dB (radiated)

Accuracy ± 1%

Frequency Frequency 1086.5 to 1093.5 MHz

Power Range 47 to 64 dBm

Sensitivity Range. -50 to -87 dBm

Reply Percent Range 0 to 100%

DME

DME Receiver

Frequency Frequency Channel Freq +3.5 MHz
Accuracy ± 200 kHz
Sensitivity Range < -35 dB

DME Transmitter

Frequency Frequency 962 to 1213 MHz
Accuracy ± 100 kHz
Power ≥ 4 dB

TCAS

TCAS Transmitter

Frequency 1090 MHz ± 10 kHz
Output Power >
Modes C & S
Antenna Beamwidth…. 15° Sum & Diff Ports
30° Sum only

4dB

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TCAS Receiver

Frequency 1026.5 to 1033.5 MHz

Power 47 to 64 dBm

Physical Characteristics

Packaging MIL-PRF-28800 Style C

Size 14.5 x 9.4 x 6.5 inches
Weight. 20 pounds
Operating Temperature -28° to +55° C
Battery Operation. 8 hours at a 20%

Duty Cycle
AC Operation/Charging 100 – 240 VAC
47 – 440 Hz

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1.6 Abbreviati ons, Acronyms and Glossary of Term1

A/A Air to Air
A/A B Air to Air Beacon
ac or AC Alternating Current
A/D Analog to Digital
ADS-B Automatic Dependent Surveillance - Broadcast
Address The unique code to which a MODE S transponder replies. This is not to

be confused with the 4096 code used for identifying ATCRBS
transponders. The address of a MODE S transponder is not alterable by
the pilot or crew.

Altitude The pressure altitude of the aircraft as transmitted by an ATCRBS or

MODE S transponder. This information is obtained from an external

sensor and transmitted to the transponder.
AM Amplitude Modulation
ATCRBS Air Traffic Control Radar Beacon System
ATCRBS/MODE S All Call Interrogation that causes all ATCRBS/MODE S transponders to reply.
ATC Air Traffic Control
AUT Aircraft Under Test
BIT Built in Test
Comm Refers to the communications and data-link capability of a MODE S

transponder. There are four (4) capabilities: No Comm, Comm A/B,

Comm A/B/C and Comm A/B/C/D. The Comm. capability is displayed

when the transponder is determined to be a MODE S.
CW Continuous Wave
D/A Digital to Analog
DAP Downlinked Aircraft Parameter
dB Decibel
dBm Decibels above 1 milliwatt
dc or DC Direct Current
DME Distance Measuring Equipment
DPSK Differential Phase Shift Keying. The method of modulation used for the

selective MODE S uplink interrogations.
DF Downlink Format. The format included in a MODE S transponder reply to

an interrogation or squitter message that indicates the type of message.
ELM Extended Length Messages
FAA Federal Aviation Administration
FAR Federal Aviation Regulation
FIFO First In First Out
FREQ Frequency
ft. Feet
G/A Ground to Air
Hz Hertz
IF Intermediate Frequency
IFF Identify Friend or Foe
KHz Kilohertz
kts. Knots
LCD Liquid Crystal Display
LED Light Emitting Diode

1

Further definitions may be f ound in the following reference books and documents: Helfrick, A.D. Principles of Avionics.

Leesburg: Quality Books, 2000. RTCA/DO- 181B. Minimum Operation al Performance Standards for Air Traffic Control
RADAR Beacon System/Mode Select (ATCRBS /Mode S) Airborne E quipment. W ashington D.C.: 1999. United States.
Federal A viation Administration. Federal Register Fed 3

, 1987 FAA rules Part 91.

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MODE S A secondary radar system where transponders can be individually

interrogated or selected (the “S” in MODE S) so that in a crowded air

traffic area, the amount of interference or garble can be reduced to a

minimum.
MHz Megahertz
nmi. Nautical mile
ns Nanosecond
PAM Pulse Amplitude Modulation
PDME Precision Distance Measuring Equipment
PMCS Preventative Maintenance Checks and Services
PPM Pulses per Minute
PRF Pulse Repetition Frequency
PW Pulse Width
PWR Power
RA Resolution Advisories
Receiver Efficiency The Test Set’s Measurement of valid replies received. Displayed as a

Percentage.
Reply Codes A transmitted response, from the airborne transponder, to an

interrogation. Commercial transponders responses are designated as

either ATCRBS/A where the reply includes the pilot selected 4096 ID

code, or ATCRBS/C, where the reply includes the aircraft pressure

altitude. These same responses for military transponders are designated

as MODE 3A and MODE 3C. See Mode S for further information.
RF Radio Frequency
RMS Root Mean Square
R/T Receiver Transmitter
SIF Selective Identification Feature
SLS Side Lobe Suppression. A pulse transmitted from an omni-directional

antenna used as a reference level to prevent replies to interrogations

received from the secondary radar antenna side lobes.
Squitter The self-generated transmissions made by a MODE S transponder, not in

reply to an interrogation, for the use of the collision avoidance system.

And ADS-B Receivers and Transmitters.
SSR Secondary Surveillance Radar
Surveillance Altitude An interrogation that causes only the addressed MODE S transponder to

reply.
Surveillance ID An interrogation that causes only the addressed MODE S transponder to

reply to its “4096” code.
TA Traffic Advisories
TACAN Tactical Air Navigation
TCAS Traffic Alert and Collision Avoidance System
TIS Traffic Information System
TX Transmitter
UF Uplink Format. The format in a MODE S interrogation that indicates the

type of reply expected.
VORTAC VOR and TACAN (co-located)
VOR VHF Omni-Directional Range
VSWR Voltage Standing Wave Ratio
WOW Weight On Wheels
UUT Unit Under Test
XPDR Transponder
XPDR UT Transponder Under Test
4096 Code This refers to the octal number dialed into either an ATCRBS MODE A or

MODE S transponder by the pilot. This is to be distinguished from the

address of the MODE S transponder, which cannot be changed.

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CHAPTER II

PREPARATION FOR USE AND OPERATION

SECTION A

GENERAL INFORMATION

2.1 General

This Chapter contains all nec es sary inform ation on the initial unpacking, inspection, and set-up of
the TR-220 Multifunction Test Set (Herei naft er call ed the TR-220, Test Set, or T/S).

2.2 Unpacking

When receiv ing the TR-220 for the fi rst time, ensure that there is no damage to the shipping
container. Carefully unpack the unit and save the shipping container in a safe location for
shipping or ext ended stor age.

Examine the unit for obvious signs of damage. Check all displays, switches, and connectors
before utilizing the Test Set.

If any dam age i s found, DO NOT use the T est S et until a deter m ination of the Test Sets functions
can be assessed. Contact Tel-Instrument as soon as possible for further instruc tions.

The TR-220 Test Set batt eri es were installed and fully charged when shipped from the factor y .

2.3 Installation

The Test Set is fully func tional and ready to use from the fact or y. There ar e no inst allation
procedures applicable.

2.4 Accessories

Once opening the Test S et Cover , ensure al l the accessories that were purcha sed with the Test
Set are account ed for. T he TR-220 c om es standard with the following (See next page):

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# NOMENCLATURE P/N QTY

1 Test Set 90000088 1
2 Cable Assembly, AC Power Cord 75010025 1
3 Cable Assembly, Direct Connect 75010186 1
4 Extender Cable Assembly, Dir ectional

Antenna

75010078

1

5 Directional Antenna Cabl e Assembl y 75010208-02 1
6 Directional Antenna Assembly 89001158-07 1
7 Directional Antenna Handl e A ssembly 88001002 1
X TAP-200 Antenna Coupler Optional

XX TR-220 Manual (Not Shown) 90008088-1 1

TR-220 Accessories

Table 2-1

1

2

3

4

7

6 5

TR-220 Accessories

Figure 2-1

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SECTION B

OPERATING CONTROLS, INDICATORS, AND CONNECTORS

2.5 General

This section c overs loc ation and funct ion of the operat ing c ontrols, indicators, and connectors. Al l
controls, indicators, and connectors are located on the front panel of the T est S et.

2.6 Controls, Indicators, and Connectors

Figure 2-2 and Table 2-2 indicates the location and the f unct ion of each item on the front panel of
the Test Set.

1 2 3 4 5 6 7 8 9 10 11 12

Controls, Indicators, and Connectors

Figure 2-2

2-3

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FIG # Control, Indicator, or

Connector

(Table 2-2) FUNCTI O N

1 SUM Antenna Port
2 DIFF Antenna Port Provides Connection to the Directional Antenna Diff Connector
3 Data Display Window

4 UUT FUNCTION Switch

CHN/ALT, DIST, VERT

5

SPEED Switch

UP/FWD, DOWN /RE V

6

7
8 IDENT Switch Initiates a SPI Pulse for verification of transponder IDENT function.

9
10
11 Direct Connect Port
12

13

14 STORE connector RS-232 port for download of stored data to a PC.
15 Test Set charging indicator Indicates to operator that the Test Set Batteries are charging

16 AC Power Panel

17
18 Power ON “LED” Indi cates to the operator that the Test Set is “ON”.

Switch

TO/START – FROM/STOP

Switch

ATCRBS/AI R, MODE S /GND
INTRUDER Switch

INCREASE/DECREASE
VELOCITY

MOM/BACK LIGHT/ON

Switch

AUTO/TEST/MANUAL

Switch

TEST SET ON/OFF
Switch

Provides Connection to the Directional Antenna Sum Connector and the
optional TAP-135 Antenna Coupler.

Alpha/Numeric display (2 lines/20 characters) providing operational
instructions, error messages, scenario progress, and test results.
Provides access to Test Set Menus and Modes.
SETUP- Set Antenna Gain, T/S Distance, TCAS Scenario Selection, Altitude,
Velocity, and Vertical Speed and Distance, Power display (watts or dBm),
Cable Loss, Mode S address, and Latitude and Longitude for ADS-B
Functions.

XPDR- Access ATCRBS and MODE S Transponder test menus.
TCAS- Access TCAS intruder menus.
ADS-B TX- Select ADS-B Transmitter Results.
ADS-B RX- Select ADS-B, and TIS Functions.
DME- Access DME Test menus.

DME- Allows selection of DME Channels. Selectable from 108. 0 MHZ in 50
KHz steps. Used in conjunction with UP/FWD – DOWN/REV switch.
TCAS- Set Intruder altitude offset from 99,900’ t o 50,200’ in 100’ inc/ 50,175’
to -9000’ in 25‘ increments. Default is 0’. Used in conjunction wit h UP/FWD –
DOWN/REV switch.
TCAS- Intruder vertical speed in “feet per minute” (fpm) adjustable in 100’
increments from +7500’ to -7500’. Used in conjunction with UP/FWD –
DOWN/REV switch.

Used in conjunction with CHN/ALT, DIST, VERT SPEED switch to vary
parameters. Also used to set ant enna gain and Test Set di stance in SETUP
mode.

Start and Stop TCAS Intruder scenarios and change DME To/From
parameters.

Selects TCAS Intruder Type (MODE S or ATCRBS), and Air or Ground
position.
Sets TCAS Intruder and DME speed velocities. Also utilized for ADS-B TX/RX
Functions.
For direct connection to a Transponder. Provides accurate RF Power,
frequency and sensitivity measurements.

Activates display backlighting either “ON” or momentarily.
Allows the operator to select an Automatic Sequence of Transponder tests or

a Manual sequence. Initiates TCAS and DME scenarios. Hold AUTO key
when Test Set power is turned “ON” to select CW operation. Use AUTO and
MANUAL to advance through EHS and ADS-B tests.

1. Provides connection to a 115 or 220 VAC power source.

2. AC “ON” / “OFF” switch for battery charging.

3. Fuse Cartridge.
Turns Test Set “ON” and “OFF”.

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Rev E TR-220 90 008 088-1

SECTION C

OPERATING INSTRUCTIONS

2.7 General

The TR-220 i s a self-cont ained instrum ent comprised of a Test Set mounted in a r ugged case
with a removable cover. The Test Set front panel contains all the switches necessary to test
Transponders (ATCRB S and MO DE S), ADS- B and TIS , DME and TCAS equipm ent. By t he use
of toggle switches and an easy to read display, the operator m ay quickly test, make accurate
measurements and perform preprogrammed or manually selected TCAS scenarios. The
directional antenna with an active LED display and optical sight are utilized for Transponder,
DME, and TCAS tests. All accessories are stored in the Test Set case for easy storage and
protection.

2.8 Battery Operation

The TR-220 Test S et is equipped with a rechargeable Lead Acid batter y , capable of operating the
Test Set using a 20% dut y cycle f or 8 hours at 77 degrees F (25 Degree s C). This repre sents a
full day of t ypical t esti ng on a si ngle c harge. W hen operat ing t he Test S et i n l ower tem perat ures,
the battery life will decrease slightly .

The operator will be able to utilize the Test Set until the batteries are nearl y depleted. The unit
may then be plugged i nto a standard 115 or 220 VAC / 47 to 440 HZ power source to conti nue
testing. By observi ng a Duty Cycle (DC) of 20%, the Test Set batteri es will begin regaining their
charge while testing is in progress.

The TR-220 provi des a low battery warning system to alert the operator when batt ery strength
has been deplet ed to a poi nt where t esti ng m ay be i nter rupted. Sev eral warni ng are di splayed t o
warn the operator of this condition and to give them a warning that the batteries will require
charging or supplem ental AC power applied to complete ext ended testing.

As the battery capacity decreases, the Test Set will displ ay the following:

Toggle the AUTO switc h to bypass the di spl ay and continue testing. A pproximately 15 minutes of
battery capaci ty is available. As the batter y strength decreases, the di spl ay will indicate:

This indi cates only several minutes of t esti ng time is a v ailable. It i s recomm ended that AC power
be supplied t o continue testing or testing halted at this point and the Test Set charged. Toggle the
AUTO switch to bypass thi s warning. Further t esting will result in the final warni ng:

Low Battery
Press AUTO to cont.

Low Battery
Recharge Required!

Low Battery
SHUTTING DOWN

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