section 3

OPERATION MANUALMODE 4/MODE STEST SYSTEM

1-2-1

Aug 1/98

SECTION 2 - OPERATION

1. INSTALLATION

1.1 GENERAL

The Mode 4/Mode S Test System is a bench test set requir ing cont inuous ac power to operate. Mode 4/Mode S Test System instal lat ion includes connect ing the SI-1404 Test Auxi l iary with the ATC-1400A Transponder/DME Test Set, powering up the system and accomplishing an instal lat ion cal ibrat ion.

1.2 SAFETY PRECAUTIONS

The fol lowing safety precautions must be observed dur ing instal lat ion and operat ion. IFR Systems, Inc. assumes no l iabi l i ty for fai lure to comply with any safety precaution out l ined in this manual.

1.2.1 Complying with Instructions

Instal lat ion/operat ing personnel should not attempt to instal l or operate the Mode 4/ Mode S Test System without reading and complying with instruct ions contained in this manual. Al l procedures contained in this manual must be performed in exact sequence and manner descr ibed.

1.2.2 Grounding Equipment and 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.

The power cord, equipped with standard three-prong plug, must be connected to a proper ly grounded three-prong receptacle. I t is the customer 's responsibi l i ty to:

● Have a qual i f ied electr ic ian check receptacle(s) for proper grounding.

● Replace any standard two-prong receptacle(s) with proper ly grounded three-prong receptacle(s) .

1.2.3 Operating Safety

Due to potent ial for electr ical shock within test equipment, Test Set covers must not be removed by operators. The Instal lat ion Cal ibrat ion, Procedure, component replacement and internal adjustments must only be performed by qual i f ied service personnel. Refer to the Instal lat ion Cal ibrat ion Procedure or Mode 4/Mode S Test System Maintenance Manual (1002-2401-400) for maintenance procedures.

1.2.4 CAUTION and WARNING Labels

Exercise extreme care when performing operat ions preceded by a CAUTION or W ARNING label. CAUTION labels appear where possibi l i ty of damage to equipment exists. W ARNING labels denote condit ions where bodi ly injury or death may result .


1-2-1

Aug 1/98

1.3 POWER REQUIREMENTS

The Mode 4/Mode S Test System operates over a voltage range of 100 to 120 VAC at 60 Hz or 220 to 240 VAC at 50 Hz. No internal wir ing changes are required before applying ac power to the Test Auxi l iary. The VOLTAGE SELECT Switch sett ing on SI-1404 rear panel must match the input l ine voltage. Instantaneous surge current at power up is ≤50 A. The specif ied fuse rat ings are l is ted in 1-2-1, Table 1.

CAUTION: FOR CONTINUOUS PROTECTION AGAINST FIRE, REPLACE ONLY W ITH FUSES OF THE SPECIFIED VOLTAGE AND CURRENT RATINGS.

INPUT

VOLTAGE

F1 AND F3

AC IN FUSES

F2 AND F4 LINE SUPPLY

FUSES 100 to

120 VAC 3.0 A, 250 V

Fast Blo (Type F) ( IFR PN:

5106-0300-600) (Bussman AGC3)

1.0 A, 250 V Fast Blo (Type F)

(IFR PN: 5106-4501-000)

(Bussman AGC1)220 to

240 VAC 3.0 A, 250 V

Fast Blo (Type F) ( IFR PN:

5106-0300-600) (Bussman AGC3)

0.5 A, 250 V Fast Blo (Type F)

(IFR PN: 5106-0000-016)

(Bussman AGC1/2)

Specif ied Fuse Ratings Table 1

1.4 INSTALLATION PROCEDURE

Refer to 1-2-1, Figure 1.

STEP PROCEDURE 1. Place the ATC-1400A on the bench.

2. Place the SI-1404 on top of the ATC-1400A.

3. Connect two 25-Pin D style cables:

● One to the SI-1404 IFR BUS Connector (J11) and ATC-1400A IFR BUS Connector (J5).

● One to the SI-1404 AUX BUS Connector (J10) and ATC-1400A AUXILIARY Connector (J6).

4. Connect three SMB-to-SMB coaxial cables:

● One to the SI-1404 RF LVL Connector (J13) and ATC-1400A RF LEVEL INPUT Connector (J4).

● One to the SI-1404 PPMG Connector (J14) and ATC-1400A EXTERNAL MEASUREMENT GATE Connector (J3).

● One to the SI-1404 DPSK OUT Connector (J15) and ATC-1400A DABS INPUT Connector (J1).

5. Connect ac power cable to the SI-1404 1400A POW ER Connector and ATC-1400A AC INPUT Connector.


1-2-1

Aug 1/98

TYPE F

TYPE F

VOLTAGE SELECT

FE

F3

E S UF

3A @

110/230

FUS E

S U

VAC

F1

F4

115

USF E

.230

E S UF

FUS E

.

163 WATTS MAX

F2

E S UF

FUS E1400A POWER

1.0A @ 110VAC

0.5A @ 230VAC

02407007

87654321ONOFF

GPIB ADDRESSIEEE 488 - 1978

SH1

L4

PP0

AH1

LE0

DC1

T6

SR1

DT1

TE0

RL1

C0

DECODER

WIDE EQUALIZER

SELF-

INTERR

INST DIM

HI

NARROW

R/NAV

OFF

GEN

OFF

XMTR

LOW

J9 J10 J11 J22

CLOCK

FREQ

SERIAL

J1

J2

J3

J4J23

TEST

ON

OFF

1

0

1

0

1

0

1

0

1

0

A1A5

SYNC IN

EXT

PULSE/PROCESSOR

MECH ASSY,

EXT

SYNC OUTTRIG OUT

SCOPE

J7

MOD IN

EXT

J3

DPSK ADJRS-232

J12

PPMGR28

RF LVL

J13J14J15

DPSK OUT

J17

J23

VIDEO OUT

GEN OUT

PREPULSE

OUT

J8 J9

OUT

ATCRBS

J4 J5

J22

ANT B DISPARTY

OUT

J6

ANT B EXT

PRF OUT TRIG IN

REPLY GRP

REPLY

(TTL) OUT

ENABLE

TRIG IN

J24

MODE GRP

TRIG IN

J18

REPLY

(3-27V) OUT

J25 J26

VIDEO IN

DECODED

J19 J20

IFR BUS J11

AUX BUS J10

GPIB J21

24

1

FOR CONTINUED PROTECTION

AGAINST FIRE, REPLACE ONLY

WITH FUSE OF THE SPECIFIED

VOLTAGE AND CURRENT RATINGS.

CAUTION

F2F1

AC LINE FUSES

SSE

FU

SUF

E

E

F

UF

ESU

J6

AUXILIARY

IFR BUS

J5

J8

INTERROGATOR

J7

INDICATOR

120 WATTS MAX

100-120VAC 60Hz

220-240VAC 50Hz

3.0A @ 110/230 VAC

TYPE F

SI-1404 to ATC-1400A Interconnect ions

Figure 1

The Mode 4/Mode S Test System can be instal led in ei ther bench-top or rack-mount fashion. Al l IFR Systems, Inc., test sets are normally shipped f rom the factory with plast ic feet instal led for bench-top instal lat ion. Instal lat ion k its are l is ted in 1-2-1, Table 2.

KIT INSTRUMENT IFR SYSTEMS PART NUMBER

Rack-Mount ATC-1400A SI-1404

7001-7636-800 7001-6740-800

Bench-Top/ Stack-Mount

ATC-1400A SI-1404

7005-6743-000 One ki t required

per Mode 4/ Mode S Test

System

Instal lat ion Kits Table 2

CAUTION: AVOID RESTRICTION OF AIR FLOW TO INTAKE VENT. W HEN OPERATING IN THE NORMAL HORIZONTAL POSITION, MAINTAIN AT LEAST TW O INCHES (FIVE CENTIMETERS) OF CLEARANCE BETW EEN THE FAN SIDE OF THE EQUIPMENT AND OBJECTS OR W ALLS. IF OPERATING IN A RACK, MAXIMUM AMBIENT TEMPERATURE MUST BE AT OR BELOW 40° C.


1-2-1

Feb 1/99

1.5 POWER-UP PROCEDURE

The Mode 4/Mode S Test System is conf igured for one-touch power control . W hen the ATC-1400A POW ER Switch is ON ( I) , the SI-1404 POW ER Switch controls power to the SI-1404 Test Auxi l iary and ATC-1400A Transponder/DME Test Set.

STEP PROCEDURE 1. Connect ac power cable to SI-1404

AC IN Connector and standard 3-pin grounded power receptacle.

2. Press ATC-1400A POW ER Switch ON ( I) .

3. Press SI-1404 POW ER Switch ON ( I) to energize Test Auxi l iary and ATC-1400A.

4. Ver i fy ATC-1400A Displays i l luminate.

5. Ver i fy SI-1404 MENU Display shows an act ive screen.

1.6 INSTALLATION CALIBRATION

Before operat ion, the Mode 4/Mode S Test System requires cal ibrat ion according to the Instal lat ion Cal ibrat ion Procedure. Any t ime the SI-1404 or ATC-1400A is replaced, another instal lat ion cal ibrat ion should be performed (only by qual i f ied service personnel) to maintain measurement accuracy.

1.7 EXTERNAL CLEANING

The fol lowing procedure contains rout ine instruct ions for c leaning the outs ide of the Test Set.

CAUTION: DISCONNECT POW ER FROM TEST SET TO AVOID POSSIBLE DAMAGE TO ELECTRONIC CIRCUITS.

STEP PROCEDURE 1. Clean f ront panel, switches and

display face with sof t l int- f ree c loth. I f dir t is di f f icul t to remove, dampen cloth with water and a mild l iquid detergent.

2. Remove grease, fungus and ground- in dir t f rom surfaces with sof t l int- f ree c loth dampened (not soaked) with isopropyl alcohol.

3. Remove dust and dir t f rom connectors with sof t-br is t led brush.

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

5. Clean cables with sof t l int- f ree c loth.

6. Paint exposed metal surface to avoid corrosion.

section 3

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