Becker Atc 2000 Owner's manual

GECI<E~

AVIONIC

SYSTEMS

Transponder

ATC 2000

Installation and Operation

Manual

DV

880.04

Issue 0 September 1980

Change 2 August 1992

Becker FlugfunkwerkGmbH • Baden Airpark • Gebaude B 108

77836 Rheinmünster • Telefon 07229/305-0

E-Mail: [email protected]

or

[email protected]

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Page No.:

Title

1-1-

1-11

1-1

1-2 -1-3

1-4-

1-6

2-1

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2-11

2-1

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3-1

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3-11

3-1

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4-1-

4-11

4-1

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FIRST ISSUE AND CHANGES

Issue

.....

0

.....

September 1980

Change

.....

1

.....

October 1984

Change

.....

2

.....

August 1992

LIST OF EFFECTIVE PAGES

Date : Page No.:

08/92

10/84

08/92

09/80

08/92

09/80

08/92

10/84

Copyright

by

Becker

Flugfunkwerk,

Rastatt

Ali

rights

reserved

Date

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Section

1

.1

1.1

.1

1.2

1.3

1.4

1.4.1

1.4.2

1.4.3

1.4.4

1.4.5

1.5

1.6

1.7

ATC

2000

TABLE OF CONTENTS

GENERAL

INFORMATION

1

ntroduction

Explanations

of

Abbreviations

and

Special Terminology

Application

Abridged Description

Specifications

General

Electrical Data -Receiver

Electrical

Data-

Transmitter

Transponder Antenna DMN170-1

Transponder Antenna

ANT

2000

System Approval

Scope

of

delivery

Accessories

!not

contained in the scope

of

delivery)

GENERAL

INFORMATION

Page

1-1

1-3

1-4

1-5

1-6

1-1/1-11

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08/92

Section GENERAL INFORMATION

1.1 1ntroduction

The

following

manuals

describe

the

transponder

ATC

2000.

The

mctnuctl

DV

880.03

"ImsLctllctLlvn

ctnü

OperctLlvn"

cvnLctlm;

Lhe

fvllowli!SJ

:,;ecLlvm;

General 1nformation

(with

specifications)

Il Installation

(testing, wiring)

Ill

Operating 1nstructions

(controls

and

indicators, operating instructions)

The

manual

DV

880.04

"Maintenace

and

Repair"

contains

the

follm'iing

sections

General Information

(with specifications)

Il 1nstallation

(testing, wiring)

Ill

Operating 1nstructions

(controls and indicators, operating instructions)

IV

Theorv

of

Operation

(principle mode

of

operation, description

of

circuit block diagram, detailed description

of

electrical function, mechanical configuration)

V

Mairrlemmce

and

Repair

(repair instructions, trouble-shooting, calibration, final testing and final test report)

VI lllustrated Parts List

(fully

illustrated parts list)

VIl

VIII

1.1.1

ALT

Altitude

Modification and

Changes

Circuit Diagrams

Explanations

of

Abbreviations

and

Special

Terminology

Position

of

mode switch

for

height interrogation

(mode

C)

1-1

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1-2

ATC

Autornatic

Overload

Cor1Lrul

(AOC)

Dead

time

Decoder

DME suppression

Echo suppression

Ernergency

Encoder

IDE

NT

Identification

1nterrogation

Recurrence Frequency (1 RF)

Moa Gilham code

Mode

MTL

Minimum

Triggering Leve!

REPLY

SI:)

Y

Standby

Air

Traffle

Control

Circuit

limiting

the numbor

of

replies

to

1200/sec

so

that

the

transmitting

tube is

not

overloaded

Time

during

which

the

uansponder

cannat

handle

any more replies after receiving interrogations

for

at

least the

time

corresponding

to

the

transponder

re

ply

This

is

a

circuit

in

the transponder

for

decoding and

evaluating

the

information

contained in the

inter-

rogation

Circuit

for

suppressing a DME

output

signal

during

the

transponder response

or

for

biocking the

trans-

ponder

for

the

duratior1

of

a

DME

output

signal

This

is

a

circuit

in the transponder

for

suppressing

the

echo impulses between

interrogation

pulses

P1

and

P3

Special reply

of

the transponder indicating

that

the

aircraft

is

in

an

emergency sit11ation (coding

76

...

or

77

...

)

Circuit

in

the

transponder

for

generating the

reply

pulses (in accordance

with

the set code)

On request

of

Air

Traffic

Control the

pilot

presses

the

1

DENT

button

on

the

transponder

to

initiate

a

special

identification

pulse identifying his

aircraft

among others

transmitting

on the

same

code

1 his

1s

the process in which a ground station beams

out

pulses

by

means

of

a directional aerial

to

trigger

a transponder reply

Number

of

pulse pairs generated

by

a

SSR

per second

Coding system

for

mode C height interrogation

Designation

for

interrogation code defined

by

the

spacing

of

bath

pulses

of

an

interrogation pulse

pair

(8J..LS

in

mode

A,

17J..LS

in mode B and

21J..LS

in

mode

C)

MiriÎriiUIIl

~Î\Jlldl

level

of

a

standar~d

r11airi-Iobe

irller-

rogation measured

at

the receiver

input

required

to

maintain a

90

percent reply effiency

Wh

en

the

transponder

responds

to

an

interrogation

the

reply

lamp

lights

up

This

is

the

standby

position

of

the transponder mode

switch in

which

the transponder

is

not

on

the

air

but

is

instantly

ready

for

operation

without

warm-up time

09/80

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c:

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Side lobe

SLS

Si

de 1

obe

suppression

S

LS

dead

ti

me

SPI-pulse

Special position

identification

pulse

Squawk

Squawk alfa

Squawk

altimeter

or

Squawk alta/charlie

Squawk

ident

Squawk standby

Stop

squawk

SSR

Seconrlilry Surveillance Radar

1.2 Application

Unwanted

radiation

in the pattern

of

the

SSR

grou

nd

direction

al

antenna

Prevents triggering

by

the

side-lobe radiation

emitted

by the

SSR

antenna

The side lobe suppression (SLS) resu\ts in the trans-

ponder also being blocked

for

a certain time,

this

SLS dead time

is

25

± 1

OMs

Pulse

locating 4.35Ms

following

~he

secondary frame

pulse

of

a transponder

re

ply,

actuated by the pi1

ot

on ground request

by

briefly

pressing the 1

DENT

button

and causing a special

identification

of

target

on the radar screen

(see

also 1

DENT)

Slang expression

for

secondary radar reply

Request made

to

pilot

to

initiate

mode A (mode

switch in

position

ON)

Request made

to

pilot

to

initiate

mode C (mode

switch in

position

AL

T)

Request Made

to

pilot

to

press

IDENT

button

Request made

to

pilot

to

switch the transponder

into

standby (mode switch in position

SBY)

Used

to

identi

fy

transponder equipped

ai

rcratt

by

transmitting

signais and receiving coded replies.

SSR

is

scan synchronized

with

PSR

(Primary

Surveillance Radar)

The

transponder

ATC

2000

is

the airborne component

of

the

Air

Traffic

Control Radio Beacon system

operating on the principle

of

the secondary radar system (SSR) and

permitting

location,

identification

and

tracking

of

aircraft by the corresponding ground stations

tor

the

purpose

of

Air

Traffic

Control.

At

the

same tirne,

ATC

personnel

can

receive special informations via

the

transponder.

1.3 Abridged Description

The

transponder ATC

2000

is

asingle block

unit

provided

for

installation

in the

instrument

panel

or

control

panel

of

an

aircraft, its dimensions being

in

keeping

with

ARINC

standard

for

control

units,

and secured

by

rnecms

of

four

DZUS

fd~Lt::ller5.

Ali

controls

are

located on the

front

panel, the rear panel

of

the

transponder mounts the connectors

for

connecting the aircraft

wiring

and

an

encoding altimeter

as

weil

as

the

antenna socket_

The

electronics

of

the

unit

are made

up

of

the

encoder/power

supply

module,

the

receiver/decoder module

and the transmitting tube. The receiver/decoder module

can

be

folded

out

to

facilitate servicing, thus

permitting

easy

access

to

ali transponder cornponents. The

transmitting

tube

is

screwed on one side

to

the

chassis frame.

The

transponder

is

ready

for

operation roughly

60s

after switching

on,

this

time being required

to

warm

up

and stabilize the

transmitting

tube.

1-3

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1-4

The

following

modes

are

provided

for:

a)

Mode A operation in which the code

set

with

the coding switches

is

returned

os

o reply on interrogation

by

a ground station

b)

Mode 8 operation, following conversion instead

of

mode A

c)

Mode C operation in which

in

addition

to

the capabilities

of

mode A operation,

the

coded

height

of

the

aircraft

can

be

communicated,

as

long

as

the encoding

altimeter

is

connected

to

the

transponder

rl)

IDEI\\T. in which the IDENT

button

of

the transmitter

is

actuated on request

of

ATC

personnel

..

The resulting identification pulse

(SPI

pulse)

permits immediate recognition

of

the aircraft

on

the

radar screen

ot

the ATC personnel by

an

additional label

of

the

object

display.

e)

Built-in

Ti=ST in which

an

intP.rrogAtion

is

simtlliltP.rl inTP.rnillly restJiting

in

a

reply_

Indication

of

the

reply

is

made

by

rneans

ot

the

re

ply !amp.

1.4 Specifications

1.4.1 General

Supply

voltage

for

emergency

operation

wit.h

Current

consumpt::ion

(without

panel

ligtting)

Panel

lighting

in

standby

mode

on

standard

version

(as

from

serial

No.

1001)

in

standbv

rr.ode

on

low-current

version

(serial

No. 300

bis

1000)

Warm-up

time

Fuse

protection

Operali11g

temperature

range

Altitude

max.

Vibration

Environmental Conditions

Weight

Mechanical dimensions

Front ponol

Case

depth

Test and assembly standards

10.8

V-

32.2

V

DC

10

V

DC

operational

:..1

A

bei

14

v

0.55

A

bei

28

V

typ.

150

mA

at

14

V

typ.

80

mA

at

28

V

1 A

at

14

V

0.4

A

at

28

V

0.5

A

at

14

V

0.2Aat28V

approx.

60s

2 A

medium-blow

-

20°

C to-,-

55°

C

(short-ti

me+

71°

C)

35000

ft

asper

RTCA

DO

-160

cat.

A1C1

(no

altitude

limitation

in pressurized aircrafts)

RTCA

DO-

160

cat. M + N

(structure

mounted

in

ali aircraft

without

limitntions)

RTCA

DO-

160

Env. Cat.

A1

C1

/A/MN/X

XXXXXABABA

1,2

kg

!J7,5 x 146

rnrn

213 rnrn

RTCA

DO

150

cat. B

(cat. A conversion possible)

Performance specifications

of

the ATC 2000

exceed

the requirernents

of

TSO-

C74c, CLASS

1A

08/92

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1.4.2 Electrical Data -

Receiver

Modes

Receive frequency

Sensitivity

Selectivity

Dynamic range

8andwidth

Si

de lobe suppression

1.4.3

Electrical

Data -Transmitter

Transmi>:

frequency

Power

output

Reoly

limitation

asper

RTCA

D0-150

Output

impedance

Reply mode (mode A 1mode 8)

Altitude

code (mode

C)

Transmit pulse shape

1.4.4

Transponder

Antenna DMNI

70-1

Frequency

range

Standing wave ratio

Impedance

Type

Pol

arizati

on

Type

of

radia-rion

Peak

power

output

Weight

Connection

DC

resistance

Mode A

and

mode C

(mode 8

after

conversion)

1030

MHz

± 0.2 MHz

72

dBm

(on 90% reply rate)

±

15

MHz

>

40

dB

±25 MHz >

60

dB

;;;;.

50

dB

± 3 MHz < 3 dB

3-pulse

method

1090

MHz±

3

Mllz

250 W

min.

f'!ffectiVP.

8S

frnm

1700

repl ies/s

50n

ICAO codin!=l system

with

4096 reply capacity

ICAO

coding

system in

100ft

steps

of

-1

000

to

62700

ft

(MoA

Gilham

code)

Pulse

width

0.45MS

±

0.1Ms

Rise

time

0.05-

0.1Ms

Foll

timc

0.05

0.2f.'s

950 MHz -

1220

MHz

<

1.5:

1

50n

corresponds

to

À 14 rod

vertical

omnidirectional

max. 2 kW

approx.

113

g

Csocket

ldle (

""')

1-5

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1-6

1.4.5 Transponder Antenna

ANT

2000

Frequency range

1030

MHz-

1090 MHz

Standing wave

ratio

<

1,25:

1

lrnpcdoncc

50n

Type

corresponds

to

À 14 rod

Pol arizati

on

vertical

Radiation

omnidirectional

Conncction

BNC

socket

lnsulation resistance

min.

1000Mn

Peak

power

output

max. 2 kW

Weight approx.

20

g

1.5 System Approval

LBA 10.930/36

FTZ

LB-334/79

1.6

Scope

of delivery

Transponder

ATC

2000

-standard

version P/N.

715.

158--915

low-current

version

P/N

..

766.653-015

1.7

Accessories

(not contained

in

the

scope

of delivery)

Transponder

Antenna

A.NT

2COO

Conncctor

oct

(for

cable

RC

58

C/U)

'Iranspcnder

Antenna

DMNI

70-1

Connecter

set

(for

cable

RG

213/U)

Componem:

parts

Cable

connecter

2

ea

BNC

cable

conr.ectors

for

RG

58

C/U

BNC

cable

connecton>

for

RG

213/TJ

2

ea

by

antenna

A~JT

2

000

1

ea

by

antenna

DMNI

70

1

ea

C-cable

connecter

for

RG

58

C/U

1

ea

C-cable

connecter

for

RG

213/U

P/N.:

707.007--952

P/tJ.:

351.732

954

P/N.:

706.991-952

P/N.:

343.498-954

P/N.:

714.917-954

P/N.:

725.706-277

P/N.:

709.425--277

P/N.:

710.830-277

P/N.:

710.849-277

''l'

0

--.:

('}

a

0

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>

0

08/92

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ATC

2000

TABLE

OF

CONTENTS

Section

Il

INSTALLATION

2.1

General

2.2 Checking prior

to

Installation

2.2.1 General

2.2.2 Checking Procedure

2.2.3 Checking Receiver Sensitivity

2.2.4 Checking Side Lobe Suppression

(SLS)

2.2.5 Checking Reply

Pulses

2.2.6 Checking Reply

Limiting

(AOC)

')?

7

C:hecking

the

SPI

Holrl Ti

me

2.2.8 Checking Mode A Coding

2.2.9 Checking Mode C Coding

2.3 Mechanical Configuration

2.4

Aircratt

Wiring

2.5 lnstalling the Transponder Antennas DMNI

70-1

orANT

2000

2.5.1 Antenna Feeder

2.5.2

DME-

Suppression

2.6 Checking after Installation

2.6.1 General

2.6.2 Checking Procedure

2.6.3

Test and adjustment

of

transmit frequency

2.6.4 Preflight Test by Built-in Testing

Section

Fig.

2-1

Fig. 2-2

Fig. 2-3

Fig.

24

Fig. 2-5

Fig. 2-6

Fig. 2-7

Fig. 2-8

LIST

OF

1LLUSTRATIONS

Il

Test Equipment

Dimensions ATC 2000

Installation

of

Fastener Strips

INSTALLATION

Installation Wiring ATC 2000 up

to

seriai No. 0184

Installation Wiring ATC 2000

seriai

No.

0185

upwards

Dimensions DMN1

70-1

Dimensions

ANT

2000

Location

of

transmitter frequency adjustment

INSTALLATION

Page

2-1

2-3

?-:i

2-3

2-8

2-11

Page

2-2

2-4

2-5

2-6

2-7

2-9

2-10

2-11

2-1/2-11

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09/80

Section

Il

INSTALLATION

2.1 General

Installation

of

the

transponder ATC 2000 depends on the

type

of

aircraft involved

and

its equipment,

thus the

information

in this section

can

only

be

of

general

nature.

2.2 Checking prior to Installation

2.2.1 General

Prior

to

installing the transponder

into

the aircraft a check must

be

made

to

establish whether the

unit

has

been

damaged in transit.

2.2.2

Checking Procedure

Connect the transponder

to

the test setup

as

shown in Fig.

2-1

and carry

out

the following tests in the

given sequence. lnstead

of

the transponder test

set

SQUAWK/NAUT

1

an

equivalent test set

or

a ramp test

set

can

be

used.

2.2.3 Checking

Receiver

Sensitivity

1.

Set

SQUAWK/NAUT

1

to

mode A on

an

interrogation recurrence frequency

of

400Hz.

Note that the

amplitude

of

pulse

P2

is

~-

9 dB

of

pulse

P1.

2.

Note that

pulses

P1

and

P3

have

equal amplitudes. Set the

RF

input

leve!

to

72 dB and observe

that the transponder replies

to

at least 90%

of

the interrogations.

3.

Set

SQUAWI</NAUT

1

lu

rrruu!:J

C

<:mu

refJ!:Jot

le5t.

2.2.4

Checking

Side

Lobe

Suppression

(SLS)

1.

Set

SQUAWK/NAUT

1

to

mode A

on

an

interrogation recurrence frequency

of

400Hz.

?.

:;et

rrJisP.s

P1

and

P2

to

same

amplitude.

3.

Alter

the HF

in

put

leve!

from 69 dBm to -24 dBm, whereby the transponder must

re

ply

to

not

more than

1%

of

the interrogation pulses.

22.5

Checking

Reply

Pulses

1.

Set

SOUAWK/NAUT

1

to

mode A at

an

interrogation recurrence frequency

ot

400 Hz. Set pulses

P1

and

P3

to

-

60

dBm.

2. Transmit frequency must

be

1090

MHz±

3 MHz.

3. The

output

power shall

be~

250 W

of

the antenna terminal.

If

RG

58 C/U

is

used

as

indicated

in

the test setup fig.

2-1

, the cable attenuation of app. 1 dB wi

Il

reduce

the

output

power by app. 50 Watts.

2-1

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ATC

2000

TRANSPONDER TEST SET

J

3202

E.G.

SQUAWK

NAUT

I

59,1"

COAX

CABLE

ANTENNA

Al.

A 1

A2

B2

81.

81

c1

C2

Cl.

04

GROU

ND

IOENT

EXT.

!DENT

GROUND

DME

NOT

USEO

{

7PL.031

8ATT

•

1~Vi28Y{

BATT

GROUND {

ILLUMINATION •

28Y

ILLUMINATION •

11.V

NOT

USED

\

1------...-+-------)

RF

OUTPUT

RG58C/U

.L

1

PROBE

) DETECTED PULSE MONITOR

1

) CAL OUTPUT

1

) FREQ MONITOR

1

)

VIDEO

OUTPUT MONITOR

1

r)

SCOPE

SYNC

OUTPUT

OSCILLOSCOPE

)

Tr:gger

?8

VE'1

'-------)A

POWER

SUPPLY

10-32Vi2A

Sourrou

DB

255

CONNECTOR

WIRING

SI

DE

1

13

ooooooooooooo

oooooooooooo

11.

25

Fig. 2-1 Test Equipment

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0

e;;

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0

co

>

0

09/80

LL

Pulse spacing between the frame pulses

F1

and F2 must

be

20.31-Ls

±

0.1/.Ls.

5. The

width

of

a

re

ply pulse must

be

0.45J.Ls

± 0.1

J.LS.

6. The necessary spaclng between the reply

pulses

is

1.45Ms

± 0.1.us"

2.2.6 Checking

Reply

limiting (AOC)

Set

SOUAWK/\IAUT

1

to

max. interrogation recurrence frequency

at

which the transponder must respond

with

min.

1200 replies/s.

2.2.7

Checking

the

SPI

Hold

Time

1.

Briefly

press

the

1

DENT

button

on

the

transponder.

2.

For

approx.

15-

30 seconds,

the

SPI

pulse must appear after

the

last frame pulse

F2

at a spacing

of

4.35J.LS.

2.2.8

Checking

Mode A

Coding

1.

Set

~;ode

0000

on

the

transponder, resu!ting in

only

the

trame pulses

F1

and F2 being visible on the

oscilloscope.

2. Set code 7777, this must produce ali

12

reply pulses

including

the

frame pulses on the oscilloscope.

2.2.9

Checking

Mode C

Coding

If

an

encoding

altimeter

is

connected

to

the transponder, check

with

the aid

of

the

MoA

Gilham code

whether

the coded pulse sequence

agrees

with

the measured

altitude.

If

the encoding altimeter

is

not

connected

to

the transponder

it

transmits

in

mode C operation

the

frame pulses

only.

2.3

Mechanical

Configuration

The transponder ATC

2000

is

designed

for

installation airera

ft

instruMent

panel

or

control

panel. The

dimensions

for

installation

of

the transponder

are

shown in Fig. 2-2.

Fitting

the fastener strips e.g.

on

the

instrument

panel

is

shown in Fig. 2-3. The transponder

is

mounted

after

fitting

the fastener strips

with

the

aid

of

four

OZ

US

fasteners.

2.4

Aireraft

Wiring

The

aircraft

wiring

of

the transponder wgether

with

the

connection

to

the encoding altimeter

is

shown

in Fig.

24

respective!y Fig. 2-5.

The transponder supply li

nes

must

not

be

loomed

mgether

with

other

equipment looms. 1n

addition

care

Must be taken

to

avoid running ali transponder vviring in

the

c!ose

vicinity

of

ADF

or

other pulseequipment

looms.

2·3

The document reference is online, please check the correspondence between the online documentation and the printed version.

0

RE

PLY

~

5,75"

XPDR

lslol!?\41

ONVAlT

SBY

TEST

OFF •

127mm

~-~~--1

5.00"

Fig.

2-2

Dimensions

ATC 2000

24

09/80

<t

0

;;i

0

co

>

0

The document reference is online, please check the correspondence between the online documentation and the printed version.

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0

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0

<Xl

>

D

t

1

lnstrumentenbrett

INSTRUMENT

PANEL

\

/

Aluminium

Bandmaterial

8x20mm

ALUMINIUM

!llANO

PROFILE

o.Jl"x

0.79"

0

1 1 Il 1 l

0

l47mm

5.79"

136,3mm

1----------

5.

37"

161-

163mm

0

SchnellverschluBiei~tf~

FASTENER

STRIPS

SchnellverschluBieiste

FASTENER STIRIPS

Typ

PR

3 112

""''

Aluminiumblech

lmm

ALUMINIUM

0.04"

1----------------------

-----·----------4~

6.34''-

6.42"

Fig.

2-3 1nstallation

of

Fastener Strips

09/80

2-5

The document reference is online, please check the correspondence between the online documentation and the printed version.

\V

ATC

2000

E'

ANTENNA

c

,,

.l

COAX

CABLE

RG

5%

CIU

OR

RG

213

U

;,.:3.04 -

A4

14

Al.

-

,..-

A1

16

A1

--

A2

15

A2

--

82

19 B2

-

!--

81.

18

84

ENCODING

-

!--

ALTIMETER

81

17

Bl

-

1--

c1 22 Cl

-

!--

C2

21

C2

-

1--

Cl.

20

Cl.

--

04

?"

~-'

04

--

GROUND

24

-1

-

....__

!DENT

EXT.

1

---}

-_ !DENT· KEY·EXT.

IDE

NT

GROU

NO

2

-

DME

10

-

OME-

SUPPRESSION

USED{

-\

9

-

NOT

6 COAX

CABLE

-

RG

178

6/U

7

-

TPL.031

8

i--

8ATT•H.YI28'1

{ 25 l

i--

13

•14VI28V

BATTERY

i--

2A

BA

TT.

GROUND f

11

----1

H•·

AIRCRAFT-GROUND

i--

l

12

-

i--

ILLUMINATION+ 28V 4

•28V

~

TO

Dl

M.

CONTROL

i--

FOR

14V

4

ILLUMINATION

+14

V 3 •

14

v;

GROUNOEO

-

NOT

USED

5

-\

Sou

flou

DB-

25

S

CONNECTOR

WIRING

SI

DE

, 13

0000000000000

NOTE

,1o o o o o o o o o o

fs

Ail

li

nes

except

input

voltage and ground :

Sol.mau

013-25 S AWG 22

For input voltage and ground : AWG 20

Fig.

2-4 Installation

Wiring

ATC 2000

up

to

seriai

No.

0184

'<:t

~

M

0

ô

00

>

0

The document reference is online, please check the correspondence between the online documentation and the printed version.

Becker ATC 2000 Owner's manual

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