GE Druck ADTS 405 R/F Mk2 Instruction Manual

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Druck ADTS 405 R/F Mk2

Air Data Test Set

Instruction Manual

ADTS HAND TERMINAL

GE Data Classification: Public

500VA

POWERSUPPLY24-30V

FUSES

T32A

T20A

POWERSUPPLY

100/120/230V~50/60Hz500VA

115~400Hz500VA

FUSES

T5.0A250VHRC

www.gemeasurement.com

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INTRODUCTION

This technical manual provides operating instructions for the Druck Air Data Test System ADTS 405 Mk 2 series.

SCOPE

This technical manual contains a brief description, operation and testing procedures for the user of this equipment.

SAFETY

The manufacturer has designed this equipment to be safe when operated using the procedures detailed in this manual:

• Do not use this equipment for any other purpose than that stated. the protection given by the equipment from working.

• See Product Safety and Installation Guide 124M8686, also supplied, for essential operating and Safety instructions that must be followed to ensure safe operation.

• Use suitably qualified Technicians and good engineering practice for all procedures in this publication.

*A qualified technician must have the necessary technical knowledge, documentation, special test equipment and tools to carry out the required work on this equipment.

Incorrect use can prevent

PRESSURE

Do not apply pressure greater than the maximum safe working pressure specified in this manual when using the ADTS405 Mk 2 series.

TOXIC MATERIALS

There are no known toxic materials used in this equipment.

MAINTENANCE

The equipment must be maintained using the manufacturer’s procedures and should be carried out by authorized service agents or the manufacturer’s service departments.

For technical advice contact GE or subsidiary manufacturer of this product.

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MARKS AND SYMBOLS ON THE EQUIPMENT

Symbol Description

This equipment meets the requirements of all relevant European safety directives. The equipment carries the CE mark.

This symbol on the equipment indicates that the user should refer to the user manual.

This symbol on the equipment indicates a warning and that the user should refer to the user manual.

This symbol warns the user of the danger of electric shock.

Do not dispose of this product as household waste. Use an approved organization that collects and/or recycles waste electrical and electronic equipment. For more information contact your Customer Service using the details shown at the back, or your local Government Office.

For the list of approved GE service centers go to: www.gemeasurement.com

ASSOCIATED PUBLICATIONS

The following table lists the Druck publications referenced in this manual:

Safety and Installation Guide - Air Data Test Systems ADTS 405F/ 405R 124M8686

Calibration Manual -

IEEE 488 OPT 2 Manual -

SCPI IEEE 488 Manual -

User Manual -

Operating and Communications Manual -

Altimeter Encoder Option K0170

Line Switching Unit LSU 100/101

Air Data Test System ADTS 405

Line Switching Unit LSU Series

K0199

K0154

K0157

K0220

K0223

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ABBREVIATIONS

The following abbreviations are used in this manual; the abbreviations are the same in the singular and plural.

Abbreviation Description

A Ampere

abs Absolute

a.c. Alternating current

ALT Altitude

CAS Calibrated airspeed

d.c. Direct current

e.g. For example

EOC End of conversion

EPR Engine pressure ratio

EPROM Electrically programmable read only memory

etc. And so on

Fig. Figure

ft Foot

g Gauge

Hg Mercury

Hz Hertz

IAS Indicated airspeed

i.e. That is

IEEE 488 Institute of Electrical and Electronic Engineers standard 488 data

in inch

kg Kilogram

LED Light emitting diode

(M) Magnesium alloy

m Meter

mA Milliampere

max Maximum

mbar Millibar

mV Millivolts

No. Number

N.m. Newton meter

Para. Paragraph

Ps Static pressure

psi Pounds per square inch

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Abbreviation Description

Pt Total pressure (pitot)

Qc Differential pressure Pt-Ps

QFE Local atmospheric pressure

QNH Barometric pressure at sea level

ROC Rate of climb

Vc Calibrated velocity

Vt True velocity

+ve Positive

-ve Negative

°C Degrees Celsius

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GLOSSARY

The terminology used in this manual is specific and individual interpretation must not be introduced. The terms are defined as follows:

Item Description

Adjust To bring to a more satisfactory state; to manipulate controls, levers, linkages, etc. to

return equipment from an out-of-tolerance condition to an in-tolerance condition.

Align To bring into line; to line up; to bring into precise adjustment, correct relative

position or coincidence.

Assemble To fit and secure together the several parts of; to make or form by combining parts.

Calibrate To determine accuracy, deviation or variation by special measurement or by

comparison with a standard.

Check Make a comparison of a measure of time, pressure, temperature, resistance,

dimension or other quality with a known figure for that measurement.

Disconnect To detach the connection between; to separate keyed or matched equipment parts.

Dismantle To take apart to the level of the next smaller unit or down to all removable parts.

Ensure To confirm that a proper condition exists; to find out with certainty.

Examine To perform a critical visual observation or check for specific conditions; to test the

condition of.

Fit Correctly attach one item to another.

Inspect Review the work carried out by Specialists to ensure it has been performed

satisfactorily.

Install To perform operations necessary to properly fit an equipment unit into the next

larger assembly or system.

Maintain To hold or keep in any particular state or condition especially in a state of efficiency

or validity.

Operate Ensure that an item or system functions correctly as far as possible without the use

of test equipment or reference to measurement.

Readjust To adjust again; to move back to a specified condition; to bring back to an in-

tolerance condition.

Reconnect To rejoin or refasten that which has been separated.

Refit Fit an item which has previously been removed.

Remove To perform operations necessary to take an equipment unit out of the next larger

assembly or system. To take off or eliminate. To take or move away.

Repair To restore damaged, worn out or malfunctioning equipment to a serviceable, usable

or operable condition.

Replace Remove an item and fit a new or a serviced item.

Reset To put back into a desired position, adjustment or condition.

Service To perform such operations as cleaning, lubricating and replenishing to prepare for

use.

Test Ascertain by using the appropriate test equipment that a component or system

functions correctly.

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RETURNED GOODS PROCEDURE

If the unit is unserviceable and requires a repair return to a GE Service Centre. Contact the GE Service Centre, either by 'phone, fax or e-mail to obtain a Returned Goods Authorization (RGA) number, providing the following information:

• Product (i.e. ADTS 405)

• Pressure medium (i.e. air, nitrogen)

• Serial number

• Details of defect/work to be undertaken

• Operating conditions

SAFETY PRECAUTIONS

See Safety and Installation Guide 124M8686

Note: Do not use unauthorized sources to service this equipment as this will affect the

warranty and may not guarantee further performance.

PRESSURE UNITS AND CONVERSION FACTORS

Pressure units Factor (hPa) Pressure units Factor (hPa)

mbar 1.0 cmH

bar 1000.0 mH

Pa (N/m2)0.01 kg/m

hPa 1.0 kg/cm

kPa 10.0 torr 1.333223684

MPa 10000.0 atm 1013.25

mmHg @ 0°C 1.333223874 psi 68.94757293

cmHg @ 0°C 13.33223874 lb/ft

mHg @ 0°C 1333.223874 inH

inHg @ 0°C 33.86388640341 inH2O @ 20°C 2.486413

mmH

O @ 4°C 0.0980665 inH2O @ 60°F 2.487641558

O @ 20°C 0.978903642

O @ 20°C 97.8903642

O @ 4°C 2.4908891

0.0980665

980.665

0.4788025898

O @ 4°C 0.980665 ftH2O @ 4°C 29.8906692

cmH

O @ 4°C 98.0665 ftH2O @ 20°C 29.836983

mmH

O @ 20°C 0.097890364 ftH2O @ 60°F 29.8516987

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Unit Conversion

To convert FROM pressure Value 1(in pressure Units)1 TO pressure Value 2 in pressure Units: Calculate as follows:

Value 2 = Value 1 x Factor 1 ÷ Factor 2

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Contents

1. DESCRIPTION 1

1.1 Introduction 1

1.2 Operating Range and Performance 1

1.3 Operating Limits 2

2. INSTALLATION 5

2.1 List of Parts 5

2.2 Packaging for Storage or Transportation 5

2.3 Power Supply 9

2.3.1 405R Rack-mounted version 9

2.3.2 405F Flightline version 9

2.4 Positioning of the ADTS 10

2.4.1 405R Rack-mounted version 10

2.4.2 405F Flightline version 10

3. OPERATION 15

3.1 Preparation 15

3.2 Start-up 15

3.2.1 Connections 15

3.2.2 Power-up 16

3.2.3 Units of Measure 18

3.3 Operation quick reference 19

3.4 Operating modes 20

3.5 Operating Procedures 24

3.5.1 Control or Measure Parameter 24

3.5.2 Aim 28

3.5.3 Leak Measure 29

3.5.4 Aircraft system protection 31

3.5.5 Limit Checking 31

3.5.6 Changing Parameters 33

3.5.7 Engine Pressure Ratio (EPR) 34

3.6 Testing Aircraft Systems or UUT 35

3.6.1 Go To Ground and Shut-down 35

3.6.2 SETUP and CONFIGuration options 36

3.7 Communications panel options 45

3.7.1 Ethernet System 45

3.7.2 Access ADTS files 47

3.7.3 Connection of the IEEE 488 Facility 48

3.8 Enabling the Altimeter Encoder Option 49

4. MAINTENANCE 51

4.1 Introduction 51

4.2 Materials 51

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4.3 Maintenance Tasks 52

4.4 Routine Maintenance 53

4.4.1 Servicing Procedures 53

4.4.2 Replacing the output connector o-ring 53

4.4.3 Fuse Replacement 53

4.5 Cable tests 56

5. TESTING AND FAULT FINDING 59

5.1 Introduction 59

5.2 Error messages 59

5.3 Standard Serviceability Test 60

5.3.1 Procedure 60

5.3.2 Fault Finding 61

5.4 Fault Diagnosis 62

5.5 Ventilating after Overpressure 63

5.6 Further Testing 65

5.6.1 Environmental and preliminary operations 65

5.6.2 Pressure Leak check 65

5.6.3 Vacuum leak check 66

5.6.4 Range Check 66

5.6.5 Controller Stability 66

5.6.6 Testing of Standard and Optional External Communication Ports 67

5.6.7 Testing of IEEE 488 Facility 68

5.6.8 Testing the Altimeter Encoder Option 69

6. REFERENCE AND SPECIFICATION 71

6.1 Introduction 71

6.2.1 F1 - F4 72

6.2.2 ALT/Ps 72

6.2.3 SPEED/Qc 72

6.2.4 MACH/Pt 73

6.2.5 EPR 73

6.2.6 ROC/Ps RATE 73

6.2.7 RATE TIMER 73

6.2.8 HOLD 74

6.2.9 RATE 75

6.2.10 LEAK MEASURE/CONTROL 75

6.2.11 GROUND 76

6.2.12 [GO TO GROUND] 76

6.2.13 [DISPLAY QFE] 76

6.2.14 [DISPLAY QNH] 77

6.2.15 PORT 77

6.2.16 REMOTE 77

6.2.17 PRINT 77

6.2.18 EXECUTE TEST PROGRAM 78

6.2.19 HELP 79

6.2.20  or (Nudge Keys) 79

6.2.21 Number 0 to 9 79

6.2.22 -000 80

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6.2.23 CLEAR/QUIT 80

6.2.24 ENTER 80

6.2.25 CLEAR + ENTER (ABORT) 80

6.2.26 SETUP 81

6.2.27 FULL SET-UP 81

6.2.28 SETUP, [UNITS] 81

6.2.29 SETUP, [LIMITS] 82

6.2.30 SETUP, [OSC] 82

6.2.31 SETUP, [MORE], [CONTROL], [Ps Pt DUAL] 83

6.2.32 SETUP, [MORE], [DISPLAYS/OPTIONS], [DISPLAY TYPE] 83

6.2.33 SETUP, [MORE], [DISPLAYS/OPTIONS], [OPTIONS] 85

6.2.34 SETUP, [MORE], [CLOSE OUTPUT VALVES] 85

6.2.35 SETUP, [MORE], [OPEN OUTPUT VALVES] 85

6.2.36 SETUP, [MORE], [SYSTEM SELF TEST] 85

6.2.37 SETUP, ALT (Figures 6-5 and 6-6) 86

6.2.38 SETUP, SPEED, [AUTO ZERO] 86

6.2.39 SETUP, SPEED, [CAS/TAS] 86

6.2.40 SET-UP, SPEED, [Pt TEMPERATURE] 87

6.2.41 SET-UP, MACH 87

6.2.42 SET-UP, RATE TIMER 88

6.2.43 SET-UP, RATE 88

6.2.44 SETUP, LEAK MEASURE CONTROL, [AUTO LEAK] 88

6.2.45 SETUP, LEAK MEASURE CONTROL, [AUTO LIMIT] 88

6.2.46 SETUP, GROUND 88

6.2.47 SETUP, [PORT] 88

6.2.48 SETUP, PRINT, [DATE/TIME] 88

6.2.49 SETUP, EXECUTE TEST PROGRAM 89

6.2.50 SETUP, HELP 89

6.2.51 SETUP, or  (Nudge keys) 89

6.2.52 MINIMUM SETUP 89

6.2.53 SETUP, [UNITS], [AERO] 89

6.2.54 SETUP, [UNITS], [PRESS] 89

6.2.55 SETUP, [LIMITS] 90

6.2.56 SETUP, HELP 90

6.2.57 CONFIGURATION 90

6.2.58 CONFIG, [UNITS] 91

6.2.59 CONFIG, [LIMITS], [EDIT LIMITS], [EDIT EXISTING] 91

6.3 ADTS 405R/F Specification 97

6.4 Measurement and Control Range Specifications 99

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Figures

Figure Page

2-1 Equipment and Parts 7 2-2 ADTS 405R Altitude Reference 10 2-3 ADTS 405F Altitude Reference 11 2-4 ADTS 405R Front Panel View 11 2-5 ADTS 405R Rear Panel 12 2-6 ADTS 405F General View 13 3-1 Front Panel 18 3-2 Single Display 25 3-3 Dual Display 25 3-4 Triple Display 26 3-5 Rate Timer Display Aeronautical Units 26 3-6 Rate Timer Display Pressure Units 27 3-7 Pt Only Display 27 3-8 Set-up example 36 3-9 Configuring Windows For ADTS Subnet IP Address 45 3-10 Ping Test From Windows Command Prompt 46 3-11 PuTTY Configuration 46 3-12 Changing the default password 47 3-13 WinSCP Login Screen 47 3-14 ADTS File System Directories Screen 48 4-1 Output Connector O ring Seal 53 4-2 ADTS 405F AC Fuse Positioning 54 4-3 ADTS 405F DC Fuse Positioning 55 4-4 ADTS 405R AC Fuse Positioning 56 5-1 Fault Finding Chart 62 5-2 External Communications 67 6-1 Altitude Correction Rack Mounting 87 6-2 ALTITUDE CORRECTION ON-AIRCRAFT 87 6-3 ARINC 565 OPERATING LIMITS 93

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Tables

Table Page

2-1 ADTS MK2 SPARES AND ACCESSORIES LIST 8 2-2 DC Input Connector 10 3-1 Units of Measure 18 3-2 Warning Messages 32 3-3 IEEE 488 facility 49 4-1 Maintenance Chart 51 4-2 Materials List 51 4-3 Tool and Test Equipment Requirements 52 4-4 AC Input Connector 57 4-5 DC Input Connector 57 5-1 Error Messages 59 5-2 Fault Advice and Action 63 5-3 Optional cable (AAU-32 units) 69 6-1 Aeronautical Units Dual Display 83 6-2 Pressure Units Dual Display 84 6-3 Aeronautical units triple display 84 6-4 Pressure units triple display 85

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Introduction

1. DESCRIPTION

1.1 Introduction

There are two versions of this Air Data Test System, a 19", 6U high (10½”) rack-mounted unit (ADTS 405R) and a flight line unit (ADTS 405F).

The ADTS 405R is a rack-mounted system and, with external pressure and vacuum supplies connected, provides measurement and control of pitot and static systems and components. The unit can be used for leak checks, calibration accuracy checks and functional tests of air data instruments, components and systems.

The ADTS 405F is a self-contained flight-line air data test system providing complete pitot and static measurement and control. The unit can be used for on-aircraft sense and leak testing, calibration accuracy checks and functional tests of air data instruments, components and systems. The ADTS 405F comprises an electronics rack and pump rack enclosed in a high density, polyethylene case.

The ADTS 405 displays and operates in either units of pressure measurement or aeronautical units. In the control mode, the rate that the pressures change towards new set-points can be controlled in true aeronautical rate units.

There are two independent pneumatic channels connect to the aircraft or instrument systems, one for static and one for pitot. They can be operated as measure only channels with leak testing facility or each can be control channels producing true pressure conditions for altitude and airspeed.

To protect sensitive instruments and equipment a “ground” facility automatically and safely controls both channels to atmospheric pressure at the previously entered rates of change and then informs the operator when both channels are safely at “ground”.

The operator interface is either a hand terminal connected to the front panel or the key pad and display on the front panel. Both provide information and control selections for the user through the keys and display. The keypad has a back-light for improved operation in poor light conditions. The unit can also be controlled remotely using the IEEE488 communications interface. The front panel contains the operate switch and a mimic panel with LED indicators showing the operation of the solenoid-operated pneumatic valves.

The pump rack, on the ADTS 405F, produces pressure and vacuum supplies for the electronics rack and for external services. Located on the front panel, the external connectors provide for external pressure and vacuum supplies (EXT PRESSURE and EXT VACUUM) and an auxiliary static (vacuum) output (AUX). The rack is cooled by a fan located under a protective cover on the front panel. The power supply connection for the ADTS 405F is located on the front panel.

1.2 Operating Range and Performance

The ADTS 405 is supplied in one of two full-scale ranges (850 knots or 1000 knots) for measurement and control of the pitot pressure channel.

Operating limits are set, pre-defined tabular limits known as STANDARD, CIVIL and MAX these can be selected through the SETUP menu (see Reference section 6). Operators may also configure the display to aeronautical or pressure units but should be aware that when units of pressure are selected, wider full-scale pressure limits will be enabled for some parameters.

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Chapter 1. DESCRIPTION

1.3 Operating Limits

The following sets of operating limits are supplied with the ADTS 405.

850 knot range operating limits

Parameter Max Limits Standard Limits Civil Limits

Min Alt -3,000 ft -2,000 ft -1,000 ft

Max Alt 105,000 ft 80,000 ft 50,000 ft

Min CAS -100 kts 0.0 kts 0 kts

Max CAS 850 kts 850 kts 450 kts

Min Ps 3.0 mbar 27.615 mbar 115.972 mbar

Max Ps 1355.00 mbar 1088.657 mbar 1050.406 mbar

Min Qc -1,352.00 mbar 0.0 mbar 0.0 mbar

Max Qc 1,700.00 mbar 1688.00 mbar 368.01 mbar

Max Mach 12.35 2.5 1

Max ROC 100,000 ft/min 9,000 ft/min 6,000 ft/min

Max Rate CAS 2,000 kts/min 600 kts/min 600 kts/min

Max Rate Ps 10,000.00 mbar/min 200.00 mbar/min 100.00 mbar/min

Max Rate Qc 10,000.00 mbar/min 200.00 mbar/min 100.00 mbar/min

ARINC Limits OFF OFF OFF

Alt Correction 0 ft 0 ft 0 ft

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Operating Limits

1000 knot range operating limits

Parameter Max Limits Standard Limits Civil Limits

Min Alt -3,000 ft -3,000 ft -1,000 ft

Max Alt 105,000 ft 80,000 ft 50,000 ft

Min CAS -100 kts 0.0 kts 0 kts

Max CAS 1,000 kts 1,000 kts 450 kts

Min Ps 3.0 mbar 27.615 mbar 115.972 mbar

Max Ps 1355.00 mbar 1,128.029 mbar 1050.406 mbar

Min Qc -1,352.00 mbar -16.303 mbar 0 mbar

Max Qc 2,500.00 mbar 2,490.50 mbar 368.01 mbar

Max Mach 14.97 5 1

Max ROC 1000,000 ft/min 15,000 ft/min 6,000 ft/min

Max Rate CAS 2,000 kts/min 700 kts/min 600 kts/min

Max Rate Ps 10,000.00 mbar/min 200.00 mbar/min 100.00 mbar/min

Max Rate Qc 10,000.00 mbar/min 200.00 mbar/min 100.00 mbar/min

ARINC Limits OFF OFF OFF

Alt Correction 0 ft 0 ft 0 ft

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Chapter 1. DESCRIPTION

Page 23

List of Parts

2. INSTALLATION

Special request

Please keep the special packing boxes so that the ADTS can be safely shipped for calibration, repair or storage.

2.1 List of Parts

On receipt of the ADTS 405 check the contents of the packaging against the following lists:

Standard Packaging List - ADTS 405F Standard Packaging List - ADTS 405R

i) Flight line ADTS 405F i) Rack ADTS 405R

ii) Accessory bag ii)

Power supply cable 2m or 10m (regional plug

iii)

as per order)

iv) Hand terminal (optional) iv) Input, hose, 15m, green, AN6 - open

v) Hand terminal cable - 2 m (optional) v) Input, hose, 15m, yellow, AN4 - open

vi) Hand terminal cable - 18 m (optional) vi) Kit, fuse/o-ring

vii) User Manual K0572 (this publication) vii) Plug, expansion port

viii) Kit, fuse/o-ring viii) Safety and Installation Guide 124M8686

Power supply cable 2.5m (regional plug as per order)

iii) User Manual K0572 (this publication)

ix) Safety and Installation Guide 124M8686

2.2 Packaging for Storage or Transportation

WARNING THE FLIGHT-LINE UNIT CAN BE MOVED BY USE OF THE HANDLE AND

WHEELS, BUT IF IT IS TO BE LIFTED, IT IS A TWO PERSON LIFT.

Environment The optimum conditions for ADTS405 Mk2 equipment during transit, preparation for calibration and

repair and when being storage are detailed as below. Items in storage are defined as being nonoperational. If the ADTS becomes exposed to moisture or very high humidity, dry as soon as possible and temporarily store in a low humidity area. The following conditions apply for storage or shipping:

Temperature Range -51° to 70°C (-60° to +158°F) Altitude Up to 50,000 feet (15,240 metres)

Procedure

1. The unit should be at zero/ambient pressure.

2. Disconnect all hose assemblies and stow them in the shoulder bag.

3. Switch power OFF and disconnect from the electrical power supply.

4. Disconnect the power supply cable and the hand terminal cable.

5. Disconnect the hand terminal cable from the hand terminal.

Page 24

Chapter 2. INSTALLATION

When using packing materials other than the original, proceed as follows:

1. Wrap unit in polyethylene sheeting.

2. Select a double-wall cardboard container. Inside dimensions must be at least 15 cm greater than the equipment. The carton must meet test strength requirements of >125 kg.

3. Protect all sides with shock-absorbing material to prevent equipment movement within the container.

4. Seal carton with approved sealing tape.

5. Mark carton “FRAGILE” on all sides, top, and bottom of shipping container.

Note: For ADTS 405R rack units loose or peripheral items should be placed in a sealed polythene bag. For ADTS 405F stow the power supply cable, hand terminal cable and the hand terminal in the ADTS 405F lid. Fit the lid to the unit.

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SHOULDER BAG

Packaging for Storage or Transportation

HAND TERMINAL

ADTS 405F

ADTS 405R

4a-h

5a-p

REGIONAL LINE PLUG

AC CABLE (ADTS 405F)

HAND TERMINAL CABLES

2.5mREGIONAL LINE PLUG

AC CABLE (ADTS 405R)

2m or 10m

18m

IEC

ACCESSORIES

EXPANSION PORT DONGLE

(ADTS 405R ONLY)

9a-d

OPTIONAL CONFIGURABLE

ORDER ITEMS

AIRCRAFT HOSES (Ps / Pt, RED / BLUE)

ALTIMETER ENCODER CABLE (OPTION)

SERVICE KIT

SERVICES HOSES (ADTS 405R ONLY) PRESSURE / VACUUM, YELLOW / GREEN

15m

DC CABLE (OPTION)

Figure 2-1: Equipment and Parts

Page 26

Chapter 2. INSTALLATION

Table 2-1: ADTS MK2 SPARES AND ACCESSORIES LIST

Item Part Number Description Used On

1 - FLIGHTLINE ASSEMBLY (configured order item) 2 AS405-111-1728M0 3 AS505-57-3124M0 Accessory Bag 4a

†4b* †4c* †4d*

†4e* †4f †4g*

†4h* 5a

5b 5c 5d 5e 5f 5g 5h 5i 5j 5k 5l 5m 5n 5o 5p

6 7* 8 9a 9b 9c

9d 10 11 12

AA405F-23 AA405F-24 AA405F-25 AA405F-26

AA405F-27 AA405F-28 AA405F-29

AA405F-30 AA405F-1

AA405F-2 AA405F-3 AA405F-4 AA405F-5 AA405F-6 AA405F-7 AA405F-8 AA405F-9 AA405F-10 AA405F-11 AA405F-12 AA405F-13 AA405F-14 AA405F-15 AA405F-16

AS405-33-1891M0 AS405-34-1891M0 AS405-22-1891M0 EXPANSION PORT DONGLE ADTS 405R AA500F-19 AA500F-20 AA500F-22

AA500F-23 AS405-60-1891M0 AS405-82-1891M0 AS405-53-1729M0 /

AS405-54-1729M0

AS405-31-1891M0 POWER CABLE DC (OPTION) ADTS 405F * not illustrated † option

HAND TERMINAL ASSEMBLY ADTS 405F/R

IEC 60320 to UK Style, BS1363 IEC 60320 to USA/Canada style, NEMA 5-15P IEC 60320 to European style, Schuko CEE 7/7 IEC 60320 to Australia/New Zealand style, AS/NZS4417 (AS3112) IEC 60320 to India style, IS 1293 (IA16A3, BS546) IEC 60320 to China style, GB 15934 (GB 2099, GB1002) IEC 60320 to South Africa style, SANS 164-1 (SANS 60799, BS546) IEC 60320 to Japan style, JIS 8303 (NEMA 5-15P)

LEAD, AC POWER, UK, 2m LEAD, AC POWER, UK, 10m LEAD, AC POWER, USA, 2m LEAD, AC POWER, USA, 10m LEAD, AC POWER, EUROPE, 2m LEAD, AC POWER, EUROPE, 10m LEAD, AC POWER, NEW ZEALAND, 2m LEAD, AC POWER, NEW ZEALAND, 10m LEAD, AC POWER, INDIA, 2m LEAD, AC POWER, INDIA, 10m LEAD, AC POWER, CHINA, 2m LEAD, AC POWER, CHINA, 10m LEAD, AC POWER, SOUTH AFRICA, 2m LEAD, AC POWER, SOUTH AFRICA, 10m LEAD, AC POWER, JAPAN, 2m LEAD, AC POWER, JAPAN, 10m

LEAD, HAND TERMINAL 2 M LEAD, HAND TERMINAL 18 M

HOSE, RED (state length in metres) HOSE, BLUE (state length in metres)

CONNECTOR, HOSE, AN4 FEMALE CONNECTOR, HOSE, AN6 FEMALE ALTIMETER ENCODER CABLE FUSE/O-RING KIT

HOSE SET, PRESS. / VAC. YELL. / GRN.

ADTS 405F

ADTS 405R

ADTS 405F

ADTS 405F/R ADTS 405F/R

ADTS 405F/R ADTS 405F/R ADTS 405F/R

ADTS 405R

Examine all equipment to be used, paying particular attention to electrical leads and connectors and pneumatic pipes and connectors.

CAUTION DO NOT USE ANY EQUIPMENT THAT IS KNOWN TO BE OR SUSPECTED TO BE

DAMAGED OR FAULTY.

Page 27

2.3 Power Supply

See Safety and Installation Guide 124M8686 for full details.

AC Input

AC power supply

100 / 120 / 230V ~ 50 / 60Hz

115V ~ 400Hz 500VA

DC Input (Option ADTS405 F only)

DC power supply

24 - 30V

500VA

2.3.1 405R Rack-mounted version

Power Supply

1. The unit must be connected to the correct electrical power supply as stated, beside the power connectors on the rear panel.

2. Install an easily accessible isolator in the power supply circuit.

3. The power supply connector on the rear panel of the unit will not be accessible when fitted in the equipment rack.

Note: The power supply switch on the front panel is not classified as a disconnecting device.

On the ADTS 405R, two 20mm High Breaking Capacity fuses are located in the holder mounted on the power input connector on the rear of the rack and protect the entire unit. The fuses are connected in the live and neutral supply circuit and are: T5A/250V HRC type. Only replace the fuses with the correct type, see Figure 2-1 item 11 section 4-4.

2.3.2 405F Flightline version

1. The power switch on the front panel is not a power isolator as defined by EN61010. To isolate the power supply disconnect the power supply connector.

Fuses AC Power

The fuses fitted in the fuse holders on the front panel are: T5A/250V HRC type. Only replace a fuse with the correct type, see Figure 2-1, item 11. To replace a fuse see Section 4-4.

Fuses DC Power

The fuses fit in the fuse holders on the front panel are either: T20.0A/250V HRC type (on the left) or T32A/250V HRC type (on the right). The DC power option (nominal 28 V DC), can be an alternative power supply using an additional connector located on the pump front panel. Only replace a fuse with the correct type, see Figure 2-1, item 11 To replace a fuse see, Section 4-4.

Page 28

Chapter 2. INSTALLATION

Table 2-2: DC Input Connector

ADTS Pin Cable Colour Function

1 Grey + 28V 2 White 0V Return

EARTH Green Protective Ground

CAUTION A protective EARTH connection must also be made for DC operation or

specified EMC performance may be impaired.

2.4 Positioning of the ADTS

2.4.1 405R Rack-mounted version

It is important that the position of the ADTS 405 in relation to the UUT is known. An altitude correction must be made to allow for the difference in height between the reference level, indicated on the mimic panel, and the UUT. The Reference section contains details of altitude correction (SETUP, ALTITUDE).

WARNING OBSERVE THE APPROPRIATE SAFETY INSTRUCTIONS AND PROCEDURES

DETAILED IN THE AIRCRAFT MAINTENANCE MANUAL AND COMPONENT MAINTENANCE MANUALS.

rack-mounted ADTS 405R

ADTS panel marked reference level

requires negative

UUT

Corrected altitude output = true altitude output increased by height difference

Figure 2-2: ADTS 405R Altitude Reference

altitude correction value entered when below ADTS

UUT reference level

2.4.2 405F Flightline version

It is important that the position of the ADTS 405F in relation to the aircraft altitude sensors is known. An altitude correction must be made to allow for the difference in height between the reference level and the aircraft's altitude sensors. The Reference section contains details of altitude correction (SETUP ALTITUDE).

Page 29

Positioning of the ADTS

WARNING THE ADTS SHOULD NOT BE PLACED IN CONTACT WITH HAZARDOUS FUEL

VAPOUR CONCENTRATIONS.

Instruments

Aircraft reference level

requires positive altitude correction value entered when above ADTS

ADTS reference level

Air Data

Computer

Corrected altitude output = true altitude output decreased by height difference

Figure 2-3: ADTS 405F Altitude Reference

STATIC

PITOT

Cover plate for communications connectors

Hand terminal connector

Altimeter encoder connector (option)

Static output connector

Altitude sensor datum height

Key-pad and display

Solenoid valve status indicator

Pitot output connector

Figure 2-4: ADTS 405R Front Panel View

Power connection indicators

System status indicator

Calibration enable switch

Power supply switch

Page 30

Chapter 2. INSTALLATION

AC fuses holder

DC power supply Connector (option)

AC power supply connector

Pressure regulator

Source Pressure Input connector

INPUT

24-30V

400VA

INPUT

100/120/230V~50/60Hz

115V~400Hz

400VA

FUSED2x

T5A250VHRC

Source Vacuum Input connector

Cooling fan air intake

Expansion port (used with GE PV103R pump unit)

Figure 2-5: ADTS 405R Rear Panel

Pitot output connector

IEEE 488 interface

Static output connector

Note:

When port not used with other equipment the Expansion Port Plug

connector

MUST

be fitted.

Page 31

Positioning of the ADTS

ADTS HAND TERMINAL

Cover plate for option

Remote hand terminal

Connector cable (2m or 18m)

Key-pad and display

Solenoid valve status indicator

System status indicator

Elapsed time indicator

Pump switch

Calibration enable switch

Altimeter encoder connector

Static output connector

Pitot output connector

Altitude sensor datum height

Power supply switch

(optional)

Figure 2-6: ADTS 405F General View

Fan outlet cover

POWERSUPPLY24-30V

FUSES

T20A

POWERSUPPLY

100/120/230V~50/60Hz500VA

115~400Hz500VA

FUSES

T5.0A250VHRC

Pressure input connector

DC power Supply fuses

500VA

T32A

AC power Supply fuses

DC power supply connector (optional)

Cross bonding connector

AC power supply connector

Vacuum input connector

Auxiliary Vacuum output connector

Page 32

Chapter 2. INSTALLATION

Page 33

Preparation

3. OPERATION

WARNING OBSERVE SAFETY PRECAUTIONS STATED IN LOCAL ORDERS AND THE

AIRCRAFT OR EQUIPMENT SERVICING PROCEDURES.

Make sure the electrical and pneumatic connectors, electrical cables, pipes and positioning of the ADTS 405 comply with the instructions in this manual and local regulatory requirements.

3.1 Preparation

WARNING THE ELECTRICAL SUPPLY MUST INCLUDE A CONNECTION TO A PROTECTIVE

EARTH. SEE SAFETY AND INSTALLATION GUIDE 124M8686 FOR START-UP SAFETY CHECKS AND INFORMATION.

Carry out the following before use:

a. If necessary, carry out the maintenance detailed in Section 4.3 “Maintenance Tasks”. b. Make sure the air data test system power supply switch on the front panel is set to OFF. c. Connect the air data test system to the electrical supply. d. Inspect the pneumatic hoses for damage, ingress of dirt and moisture. Make sure the

aircraft adapters are serviceable.

3.2 Start-up

Before use, the ADTS 405 should be tested. Review and become familiar with the overall operating states and test procedures before starting any test process on an aircraft or component.

3.2.1 Connections

a. Connect the hoses for the test procedures to the air data test system:

• Red hose to the STATIC output (Ps)

• Blue hose to the PITOT output (Pt)

b. Temporarily seal the free ends of the hoses.

Note: When connected take care not to restrict air flow to the hoses.

c. Connect the hand terminal to the air data test system through the hand terminal

connector on the front panel. If necessary, connect the hand terminal through the extension cable.

Page 34

Chapter 3. OPERATION

3.2.2 Power-up

a. Check the power indicator is illuminated and set the front panel power switch to

OPERATE.

b. The display will show the following sequence:

1. Power-up screen.

2. ADTS 405 power-up screen.

3. Date of the last calibration and type of main transducer fitted.

4. Self-test message.

5. Measuring ground pressure message.

6. Equalizing system pressures message.

7. Display shows Leak Measure mode and the number of parameters last selected in configuration.

i. The display, on the front panel or

hand-terminal, shows:

SYSTEM STATUS

DK425 V.xx

Display Power Up

Please Wait

Note: V.xx will display the current software version number.

ii. After a short time the display

shows:

SYSTEM STATUS

DRUCK

ADTS 405

DK415 VER.xx

RED - FAULT

ORANGE - NOT READY

Last Calibration

dd/mm/yy (dmy)

RPT Transducer

PLEASE WAIT

iii. Date format can be set to a leading value of day or month in SETUP.

Page 35

Start-up

iv. Self test and front panel LED status:

SYSTEM STATUS

Self Test

PLEASE WAIT

GREEN - READY

v. The system opens the zero valves and after approximately 7 seconds the valves

close and the routine continues. The display shows:

Measuring Ground

Pressures

PLEASE WAIT

vi. The system opens the output valves, Ps and Pt port pressures will safely remain at

the original measured values:

Equalising System

Pressures

(Valves May Pulse)

PLEASE WAIT

vii. At power on check the hand-held terminal display.

ALT 0 ft Leak Measure

CAS 0 kts Leak Measure WARMUP

The ADTS 405 system may now be used but for full specification accuracy and stability, wait the “WARMUP” period of 15 minutes. The display shows “WARMUP” in the lower right hand corner, this message clears automatically after the time period.

Note:

(1)The ADTS 405 is a continuous, self-monitoring system. If the system detects an error, the display shows an error message. Lists of errors are detailed in Section 5, Fault Finding and Testing.

(2) The display at power-up can be changed, see CONFIGuration (Pg. 3-27).

Page 36

Chapter 3. OPERATION

3.2.3 Units of Measure

When operating, in either pressure measure or pressure control modes, the ADTS 405 can display the following unit information:

Table 3-1: Units of Measure

Aeronautical Functions

Altitude ALT ft, m Calibrated and True Airspeed CAS, TAS kts, km/h, mph Mach MACH Rate of Climb ROC ft/m, m/m, m/s, hm/m Rate of Airspeed Rt CAS, kts/m, km/h/m, mph/m Rate of Mach RtMCH Mach/m

Display

Abbreviation

Displayed Units

(if applicable)

Pressure Functions

Static (Absolute) Ps [P] Pitot (Absolute) Pt [P] Dynamic or Impact (Differential) Qc [P] Engine Pressure Ratio EPR Rate of Ps Rt Ps [P]/m Rate of Pt RtPt [P]/m Rate of Qc Rt Qc [P]/m Rate of EPR Rt EPR EPR/m Where [P] is the currently selected pressure units from the following list:

mbar, inHg, mmHg, inH2O (4°C), inH2O (20°C), psi, hPa, kPa, inH2O (60°F), kg/cm2,%FS

Display

Abbreviation

Displayed Units

(if applicable)

Figure 3-1: Front Panel

Page 37

Operation quick reference

3.3 Operation quick reference

The quick reference chart shows normal operation key functions. See Section 6. ‘Reference and Specification’ for detailed descriptions of ADTS 405Mk2 functions.

In the key/selection column the following applies:

ALT - Key.

[NEXT] - Item in menu (soft key).

(SINGLE DOUBLE) - Sequence of parameters selected by NEXT key.

(craft1 craft2...) - Sequence of names selected by NEXT key.

data entry - Enter number from key-pad.

The display shows the main pressure display (Leak Measure or Control mode).

Key/selection Function and comments

F1-F4 ALT Ps SPEED Qc MACH Pt EPR ROC Ps RATE RATE TIMER F1 F2 F3 HOLD RATE LEAK MEASURE/CONTROL GROUND [GO TO GROUND] [DISPLAY QFE] [DISPLAY QNH] PORT REMOTE PRINT [ALPHA] [BACK] data entry EXECUTE TEST PROGRAM [NEXT] [PREV] [RUN] F1 F2 HELP SETUP See QUICK REFERENCE SETUP or MINIMUM SETUP SETUP + F1 See QUICK REFERENCE -

CONFIG

 (nudge up)  (nudge down) 0-9

-000 CLEAR/QUIT ENTER CLEAR/QUIT + ENTER

Function keys for menus Altitude (Aeronautical units) or Ps (Pressure units) Airspeed (Aeronautical units) or Qc (Pressure units) Mach (Aeronautical units) or Pt (Pressure units) Engine Pressure Ratio (pressure units only) Rate of Climb (Aeronautical units) or Rate of Ps (Pressure units) Start timing rate of change Wait and time choice 1 Wait and time choice 2 Wait and time choice 3 Hold pressure at present value - Press again to release Rate of change of Pitot parameter - Press Pitot parameter then RATE Switches between measure mode (for leak testing) and control mode Controls Ps to atmospheric pressure and Qc to zero at current rates of change

Display local atmospheric (ground) pressure Display sea level equivalent of local atmospheric pressure See Line Switching Unit User Manual Switches (toggles) between remote and local operation Prints current parameter values to a stored text file Inserts alphabet character in user text Deletes last character of user text Numeric entry for user text Execute down-loaded Test Programs Select next listed test program Select previous listed test program Execute selected test program Execute all tests in the test program Selects and executes a specific test program Press HELP then other key for further information Temporary set-up - lost at power down

Configuration - changes power-up defaults

Hold F1 while pressing SETUP - then enter PIN

Increases aim value Decreases aim value Number entry

Minus sign for first number entry 000 (thousand) if not first number of entry Clear number entry - quit from menu or clear warning message Complete number entry ABORT - restart with power-up

Page 38

Chapter 3. OPERATION

3.4 Operating modes

CAUTION Once initialised wait 15 minutes to allow the pressure measurement system

to reach a stable operating temperature. The “Warm-up” period can be reduced to 5 minutes if the system has been powered following a short period of inactivity.

The air data test system can now be set for a variety of functions and modes that follow:

1. Pressure measurement mode

2. Pressure control mode

3. Timed leak rate measurement

4. Control to local ground pressure

The ADTS 405 always powers-up in Measure mode with the pressure controllers off. When changing to Control Mode the pump unit must be switched on and producing the correct pressure and vacuum.

Each operating function shows the required key presses to set displays and selections.

Measure Mode (Pressure measurement mode)

To select the measured parameter press:

STATIC

ALT SPEED MACH

Ps Qc Pt

Measured parameter

or or

Measured value Units of measurement

Alt 10000

Leak Measure

CAS 350 kts

“leak-measure” when measure mode selected

Change display single, dual or triple press:

Leak Measure

PITOT

Change units from aeronautical to pressure:

SETUP

[MORE]

[CONTROL]

[Ps Pt DUAL]

[DISPLAYS/OPTIONS]

[DISPLAY TYPE]

[OPTIONS]

SETUP

[UNITS]

[NEXT] [PREV] [SAVE]

Page 39

Control Mode (Pressure control mode)

For ADTS 405F set the pump switch to PUMP ON

PUMP ON

PUM

From leak measure press:

Operating modes

Alt

Leak Measure

Return to leak measure at new altitude

LEAK

MEASURE

CONTROL

Aim of 5000 ft press

LEAK

MEASURE

CONTROL

Alt

Aim

Alt Leak Measure

5000 5000 <

5000

Alt Aim 0<

000

ENTER

Page 40

Chapter 3. OPERATION

Leak measure mode (Timed average leak rate measurement)

Static channel altitude 5000 ft, measure leak:

Set rate timer: wait 05.00 miutes test 01.00 minutes

RATE

TIMER

Alt

Leak Measure

Display shows alternating time countdown and TIMING message

WAIT F1 00:00

F2 00:00 F3 05:00

4996

00:30/TIMING

Alt

Leak Measure

TIME

00:30 01:00 01:00

ROC

RtCAS

-15.00T

-1.97T

5000

Display shows alternating wait time countdown and WAITING message

Alt

Leak Measure

ft/m kts/m

4996

04:36/WAITING

Display

rate timer

shows

result

Timed Rates

Note: Compressing a gas generates heat. Gas heated or cooled in an enclosed volume causes a pressure change. It is important, especially for leak testing, to allow enough time for the heated gas to cool and the pressure to stabilize.

When setting the rate timer consider three factors:

1. The volume of the system to be tested (large volumes take longer to stabilize).

2. The pressure change (the higher the change the greater heat generated).

3. The ambient air temperature.

Page 41

Go to Ground (Control to local ground pressure)

Operating modes

Alt Leak Measure CAS 350 Leak Measure

Dual parameter display

Aim Ground < CAS = 350.0 Aim 0.0

5000

Alt Aim Ground <

CAS = 0.0 Aim 0.0 kts

120 ft

kts

(USER MODE)

GO TO GROUND

F1 F2

DISPLAY QFE

DISPLAY QNH

LEAK

MEASURE

CONTROL

GROUND

Alt

5000 <ft

Leak Measure

Single parameter display

Note: In leakMeasure use F2 and F3 for QFE and QNH information. F1 invalid in this mode.

Alt

5000

Aim Ground <

Alt Aim

120 <

Ground

Checking Ground

PLEASE WAIT

Equalising System

Pressures

(Valves May Pulse)

PLEASE WAIT

Safe At Ground

Press CLEAR/QUIT

to continue..

Note: This ground value will not be zero and depends on local atmospheric pressures and aireld altitude.

Note: Safe to disconnect pipes and adaptors from the aircraft or component under test.

Page 42

Chapter 3. OPERATION

3.5 Operating Procedures

WARNING See Safety and Installation Guide 124M8686 for guidance on safety and

standard operating conditions.

The procedures show the steps required to make sure the ADTS 405 is serviceable and of the settings required to test an aircraft system or component in the following notation:

1. All key presses are highlighted in bold and shown as identified on the key-pad.

2. Key presses inside brackets e.g., [MORE], are soft key presses (i.e, function key selections {F1 to F4} indicated on the display screen).

For further information on a particular ADTS function and using the Help System refer to Section 6 Reference and Specification. The help information includes further details of the function and details associated functions.

For a summary of Set-up and Configuration procedures refer to the quick reference charts, at the end of this section.

3.5.1 Control or Measure Parameter

To change the (displayed) parameter:

a. Value parameters: Press the parameter key e.g, press SPEED/Qc to display airspeed. b. Rate parameter: Press the associated parameter key followed by the rate key for that

channel. e.g, display airspeed rate, press SPEED/Qc then RATE. ROC/Ps Rate may be directly pressed without first pressing ALT/Ps.

Note: The displayed parameters depend on the last keys pressed.

To display two parameters:

a. Press each value parameter in turn, e.g, display altitude and airspeed together, press ALT/

Ps then SPEED/Qc.

b. In control mode, an arrow, at the right-hand end of the aim value, indicates the last

parameter selected. This can be changed by entering a new value.

To display a value parameter together with its rate:

a. Press the parameter key followed by the associated rate key, e.g, display airspeed and rate

of speed together, press SPEED/Qc then RATE.

Note: If ROC/Ps Rate is pressed, the display automatically shows ALT and ROC.

See “SETUP RATE”, section 6.3, for display details.

Display Functions (Fig 3.2, Fig 3.3 and Fig 3.4)

The display normally shows pressures and rates or aeronautical equivalents. It can be set-up to show, at the same time, one parameter (single), two parameters (dual) or three parameters (triple).

Page 43

Operating Procedures

The triple display always shows altitude and airspeed; with pressure units selected, the display always shows Ps and either Qc, Pt or EPR. When ALT or CAS are selected the display shows the aim and measured values of ALT and CAS as a dual display. With any other selected parameter the display shows the measured values of altitude and airspeed and, the aim and measured value of the other selected parameter. Additional display modes are available for certain options.

Note: The ADTS 405 automatically returns to the pressure display if left inactive in any set-up or menu type display for a period of more than one minute.

Controlled or measured parameter

Measured value

Alt

10000

Aim

Aim (set-point or target) or “leak-measure” when controller selected o

T for timed rate of change

10000

Pointer for parameter

Figure 3-2: Single Display

Measured values T for timed rate

of change

Units of measurement

WARMUP

Special messages

Controlled or measured parameters

Alt Aim CAS Aim

Aim (set-point or target) or “leak-measure” when controller selected o

10000 10000

582.0

600.0

Pointer for primary parameter - aim that changes on data entry

Figure 3-3: Dual Display

Units of measurement

kts

Special message

Page 44

Chapter 3. OPERATION

Figure 3-4: Triple Display

Measured values T for timed rate

of change

Constant indication of values

Current changing parameter

Aim (set-point or target) or “leak-measure” when controller selected o

Alt CAS

ROC

Aim

10000

582.0

2995

3000

Pointer for primary parameter - aim that changes on data entry

kts

ft/min

Special message

Units of measurement

Rate Timer Displays (Fig 3.5 and Fig 3.6)

When in Leak Measure mode and, after completing a rate timing, the system generates the rate timer displays. These displays are independent of the display mode (single, dual, triple or option).

Note: There is no pointer for the primary parameter, values cannot be entered in the rate timer displays.

Pressing a parameter key (ALT, ROC, etc) or CLEAR/QUIT exits the rate timer displays.

Parameters Measured

Timed values

ROC Rt CAS

-17.25 T

-0.52 T

T for timed rate of change

ft/m

Kts/m

Timed Rates

Special message

Figure 3-5: Rate Timer Display Aeronautical Units

Units of measurement

Page 45

Operating Procedures

Parameters Measured

Rt Ps Rt Pt Rt Qc

Timed values

0.637 T

0.341 T

-0.224 T

T for timed rate of change

mbar/m mbar/m mbar/m

Timed Rates

Special message

Figure 3-6: Rate Timer Display Pressure Units

Pt Only Display (Fig 3.7)

The Pt only display overrides the other display modes (single, dual and triple). The measured altitude and the CAS are produced from Ps in measure mode.

Alt always shown

Measured altitude

T for timed rate of change

Units of measurement

Alt

Selected parameter

Pt Only

CAS

Aim

Aim (set-point or target) or “leak-measure” if Pitot controller selected o

3.5.1.1 Change display units:

a. Press SETUP. b. Select [MORE]. c. Select [DISPLAYS/OPTIONS]. d. Select [DISPLAY TYPE].

407

0.0

Pointer for parameter

Figure 3-7: Pt Only Display

kts

Special messages

e. Using [NEXT] or [PREV]. f. Select either SINGLE, DUAL or TRIPLE, ENCODER (more display types with options fitted). g. Press [SAVE] to accept. h. Press CLEAR/QUIT repeatedly to return to user display.

Page 46

Chapter 3. OPERATION

3.5.1.2 Change the display for Pt Only:

a. Press SETUP. b. Select [MORE]. c. Select [Control], [Ps Pt Dual]. d. Select [Pt Only Mode]. e. Press CLEAR/QUIT repeatedly to return to user display.

3.5.1.3 Change measurement units:

In Full Set-up Mode any set of aeronautical or pressure units can be selected.

a. Press the SETUP key. b. Select [UNITS]. c. Use [NEXT] and [PREV] keys to select the required units. d. Select [SAVE] to accept. e. Press CLEAR/QUIT repeatedly to return to the main pressure display.

• In Minimum Setup Mode only the default aeronautical and pressure units can be selected.

• If Set-up Mode is switched off, units cannot be changed.

3.5.1.4 Change the unit type

a. Press the SETUP key. b. Select [UNITS TYPE]. c. Select either [AERO] or [PRESS] to select the unit type. d. Select [SAVE] to accept. e. Press CLEAR/QUIT repeatedly to return to the main pressure display.

• The default pressure and aeronautical units are defined in the CONFIGuration mode.

• Display cannot be changed with SETUP switched off or in minimum mode.

3.5.2 Aim

The ADTS 405 must be in control mode to set a new aim (current aim displayed). If the aim field shows “Leak Measure” press LEAK MEASURE/CONTROL to enter control mode.

A new aim can be entered using the numeric keys. The existing aim is replaced when the first digit of the new aim is pressed. Each digit is displayed as it is pressed, If an error is made during the entry of data, press CLEAR/QUIT to restore the original aim.

Press ENTER to action the new aim.

Note: The 000 key can be used as a quick way of entering thousands.

Page 47

Operating Procedures

3.5.3 Leak Measure

a. Press LEAK MEASURE/CONTROL to return to Leak Measure mode. b. Press RATE TIMER, F3 - [Wait 05:00, Time 01:00].

Note: Different wait and time periods can be selected by pressing F1 or F2.

c. Wait until rate timer has completed and the results displayed. d. Check rate of climb is less than ±100 ft/min and rate of airspeed (CAS) is less than ±1 kt. e. Press LEAK MEASURE/CONTROL to return to Control mode. f. Press GROUND, F1, [Go to Ground]. g. Wait until for the display shows “Safe At Ground”.

3.5.3.1 ADTS 405 Leak Test

It is important to check that the ADTS 405 and the connecting equipment does not leak.

a. Before use a leak check should be carried out as follows: b. Connect the pitot and static hoses (to front panel of ADTS 405F). c. Temporarily seal the free ends of the hoses. d. Set the display to dual display, see 3.9, Display. e. Set the units to feet and knots, see 3.13, Changing the Units. f. Using the SETUP menu, choose the limits set for the aircraft or UUT, see 3.14, Limit

Checking.

i. Press SETUP, [LIMITS], and [NEXT] until required wait is shown/set. ii. Press [SEL] to save and then press CLEAR/QUIT until the main pressure screen

shown below is displayed.

ALT 125 ft

Leak Measure

CAS 0.0 kts

Leak Measure WARMUP

Note: The numeric value of the parameters displayed change with each powerup sequence. The amount of change depends on local atmospheric pressure conditions at the time of power-up.

g. Press the LEAK MEASURE/CONTROL key to turn on the pressure controllers.

Page 48

Chapter 3. OPERATION

Example

To apply an altitude of 5000 ft at a rate of climb of 6000 ft/min and an airspeed of 300 kts at a rate of 600 kts/min:

i. SPEED/Qc then RATE to select rate of change of speed. ii. 6, 0, 0, ENTER to set the rate. iii. SPEED/Qc to select airspeed. iv. 3, 0, 0, ENTER to set an airspeed of 300 kts (airspeed [CAS] now starts increasing). v. ROC/Ps Rate to select rate of climb. vi. 6, 0, 0, 0, ENTER to set the rate of climb. vii. ALT/Ps to select the altitude. viii. 5, 0, 0, 0, ENTER to set altitude ([Alt] altitude now starts increasing). ix. SPEED/Qc to view altitude and airspeed together.

Note: When altitude and airspeed are changing at the same time, and automatic airspeed rate is enabled, the system automatically adjusts the airspeed rate so that the aim points are reached at the same time. The airspeed rate will not exceed the entered aim value.

Wait for the aim values to be achieved. Observe over a period of 1 minute that the value of Alt stays within ±10 ft and the value of CAS with ±1 kt.

ALT 4050 ft

Aim 5000

CAS 289.0 kts

Aim 300.0 <

After a successful leak test, the ADTS 405 is ready to be connected to an aircraft system or unit under test.

If the preliminary leak test is unsuccessful:

h. Leave the system to achieve thermal stability for a further five minutes, press CLEAR/

QUIT and repeat the leak test. i. After another unsuccessful leak test: j. Disconnect both hoses, check the condition of the o-rings on the Ps and Pt connectors as

detailed in the maintenance section and firmly replace the blanking caps. k. Press CLEAR/QUIT and repeat the leak test procedure. l. After a successful leak test without hoses connected: m. Replace or repair the faulty hose(s) and re-test. n. If the ADTS 405 fails the leak test without hoses connected, switch off and return the unit

to the repair depot.

Page 49

Operating Procedures

3.5.4 Aircraft system protection

The ADTS 405 protects the aircraft system against user error and leaks in the aircraft system.

Note: The pumps must be switched on.

The system protection operates by:

• Limit checking of user entered set-points.

• Automatic regain of control if leak rate is over limit during leak testing.

• Automatic regain of control if a leak takes the system pressures outside of limits.

3.5.4.1 Auto recovery facilities

The pressure controllers in the ADTS 405 can “feed” a leak in an aircraft system. When first testing an aircraft system, a leak test must be carried out at low altitude and airspeed.

• If, during a leak test, a leak in the system produces a rate of climb greater than the rate set in limits or a rate of change of airspeed greater than the rate set in limits, then the pressure controllers automatically regain control to minimise damage to the aircraft system. This AUTO LEAK RECOVERY facility can be disabled.

• If a leak causes the system pressures to exceed any limit during a leak test, the pressure controllers automatically regain control. This AUTO LIMIT RECOVERY facility can be disabled.

• If negative airspeed (or Qc) occurs in measure mode, the zero valve is automatically opened for one second to balance the airspeed. This only applies when the minimum CAS (or Qc) limit is zero.

• Limits cannot be changed with SETUP switched off or Limit Lock enabled.

3.5.5 Limit Checking

The system checks all data entered against minimum and maximum limits set for the particular limit set in use. If these limits are exceeded, the data entry is ignored and a warning message displayed showing the minimum and maximum values that can be entered. The system also checks all limits of associated parameters. If these limits are exceeded when a new value is entered, the display shows the name of the associated parameter, e.g. If a Mach limit is exceeded when entering an airspeed value the display shows “Mach” and the equivalent maximum and minimum limits as airspeed values.

Similarly, if an ARINC 565 limit is exceeded when entering a value and ARINC limits are enabled, the display shows `ARINC'.

3.5.5.1 Select the limits in use:

a. Press SETUP. b. Select [LIMITS]. c. Use [NEXT] or [PREV] to select the limits required. Each set of limits is identified by its

name, including the pre-defined sets of limits (“Standard“, “Civil” and “Max” see section 1.3,

Operating Limits). d. Select [SEL] to select the limits. e. Press QUIT/CLEAR to return to the pressure display.

Page 50

Chapter 3. OPERATION

Table 3-2: Warning Messages

The following table lists the warning messages with the possible cause and action to be taken.

No. Message Probable Cause Action 2 INVALID USER

INPUT

3 OPERATE CAL

ENABLE ON STATUS PANEL

4 ONLY VALID IN

CONTROL MODE

210 Ps SOFT START

TIMEOUT

212 Ps PRESSURE FAIL The Ps controller has detected loss of supply

213 Ps VACUUM FAIL The Ps controller has detected loss of supply

220 Pt SOFT START

TIMEOUT

222 Pt PRESSURE FAIL The Pt controller has detected loss of supply

223 Pt VACUUM FAIL The Pt controller has detected loss of supply

301 LEAK RATE TOO

HIGH REGAINING CONTROL

302 OUTSIDE LIMITS

REGAINING CONTROL

303 ZERO OFFSET TOO

LARGE

304 INITIALIZING

SYSTEM

305 OUTSIDE LIMIT GO

TO GROUND 306 SWITCH PUMPS ON Cannot select control mode with pumps off. Switch pumps on. 307 COMMUNICATION

RING FAULT-

PACKET IS

CORRUPT 308 UPDATING SYSTEM Software upgrade. Wait 1 minute. 309 CANNOT CONTROL Failed pump test. Check system limits. 310 PUMP TEST FAILED Pump not achieving limits. Set lower limits.

The numeric value entered was outside the allowed range

Calibration started before removing calibration enable plate on the front panel

Selection not allowed in Leak measure mode Select controller on.

The Ps controller has failed to go into control mode

pressure and automatically switched all channels to measure mode. This can occur at very high rates of pressure change in large volume systems if the pumps cannot produce enough pressure.

vacuum and automatically switched all channels to measure mode. This can occur at very high rates of pressure change in large volume systems if the pumps cannot produce enough vacuum.

The Pt controller has failed to go into control mode.

pressure and automatically switched all channels to measure mode. This can occur at very high rates of pressure change in large volume systems if the pumps cannot produce enough pressure.

vacuum and automatically switched all channels to measure mode. This can occur at very high rates of pressure change in large volume systems if the pumps cannot produce enough vacuum.

Control mode automatically regained for aircraft safety as leak rates too high.

Control mode automatically regained for aircraft safety as the measures values have drifted outside the operating limits due to leaks.

The zero offset measured during auto-zero was outside.

This only occurs on main system software upgrade.

Measured pressure is outside new limits selected or power-up limits.

Internal error. If the fault can be repeated, return to

Re-enter value within allowed range.

Refer to main fault finding chart in the service manual.

Select CONTROL again. If fails again, refer to main fault finding chart in the service manual.

Restore pressure supply BEFORE going to control mode again. Refer to main fault finding chart in the service manual.

Restore vacuum supply BEFORE going to control mode again. Refer to main fault finding chart in the service manual

Select CONTROL again. If fails again, refer to main fault finding chart in the service manual.

Restore pressure supply BEFORE going to control mode again. Refer to main fault finding chart in the service manual.

Restore vacuum supply BEFORE going to control mode again.

Correct leak and retest.

Correct leak and retest. If leak Ps, ensure that normal Qc pressure is applied (e.g. 200 kts to avoid negative airspeed).

Return to maintenance depot for calibration.

If message occurs during normal operation, return to maintenance depot.

Control pressure to within limits.

maintenance depot.

Page 51

Operating Procedures

Using the CONFIGuration function, new sets of limits can be created and existing sets of limits can be edited. In addition, the set of limits in use at power-up can be selected. If required, this selection can be locked to prevent unauthorised changing of the limits.

Using the SETUP function, previously stored sets of limits can be recalled for use. Each set of limits is stored under an aircraft name. Three pre-defined sets of limits “Standard“, “Civil” and “Max” limits are supplied with the ADTS 405.

Note: The ADTS 405, when delivered, contains “Standard” and “Civil” limits; to set and store “Max” limits, for the first time, enter configuration. The “Max” limits depend on the range of the pitot channel either 850 or 1000 knots, see section 1.3, Operating Limits.

3.5.6 Changing Parameters

3.5.6.1 Mach Test and Constant Mach

To go to 0.8 Mach, enter Control Mode and proceed as follows:

a. Press SPEED then RATE to select rate of change of airspeed. b. Enter required rate, e.g. 300 kts/min. c. Press MACH. d. Enter 0.8. e. Wait for the Mach to be achieved.

Note: If the altitude changes the system automatically adjusts the airspeed to keep the Mach value constant.

3.5.6.2 True Airspeed

The normal airspeed parameter is Calibrated Airspeed (CAS) (equivalent to IAS for testing purposes).

The airspeed parameter may be changed to True Airspeed (TAS) as follows:

a. Press SETUP then SPEED. b. Select [CAS/TAS]. c. Select [TAS]. d. Press QUIT/CLEAR repeatedly to exit set-up. e. Press SPEED.

The display now shows the airspeed parameter as TAS.

Note: Airspeed parameter type can only be changed in Full Set-up mode. Rate of change of airspeed will still be shown as Rate CAS.

Pitot temperature (Θt) is used in the calculation of TAS. Pitot temperature can only be changed in Full Set-up mode. To enter (Θt):

a. Press SETUP. b. Press SPEED. c. Select [Pt TEMPERATURE]. d. Enter the temperature measured by the aircraft's Pitot temperature sensor. e. Press QUIT/CLEAR three times to return to user display.

Page 52

Chapter 3. OPERATION

3.5.6.3 Airspeed Switch test

The following example shows how an airspeed switch can be functionally checked.

Note: For low airspeed switches (i.e. 130 knots) the Pt Only facility could be used.

Example a. Press LEAK MEASURE/CONTROL to enter control mode. Press SPEED/Qc. b. If necessary, press RATE and enter a change of airspeed low enough to observe switch

operation. c. Enter an Aim value below the operating limits of the switch (i.e., airspeed switch operating

at 130 knots ±2 knots set 127 knots). d. Press ENTER and observe the airspeed changing. e. Using the nudge facility, set to an appropriate step value, increase the Aim value. f. Increase the Aim until the switch operates (contacts close) and record the value. g. Change the Aim to above the airspeed operating range (i.e. 133 knots). Repeat the steps 3

to 5, decreasing the Aim value until the airspeed switch operates (contacts open) and

record value.

This procedure can be repeated. If many operations of a switch are required use the oscillating facility detailed in Full Set-up, see 6.2.30. The above method (steps a. to g.) can be applied for the other parameters:

Examples:

Altitude switch

• Low altitude warning

• Landing gear configuration warning

• Height lock

Mach switch

• Speed brake scheduling

• Mach cruise lock

3.5.7 Engine Pressure Ratio (EPR)

The ADTS 405 may be used to check EPR sensors and indicators. Use Ps for INLET pressure and Pt for OUTLET pressure. To carry out an EPR check, the display mbar or in Hg.

must be showing pressure units e.g,

3.5.7.1 Example EPR

To enter an EPR of 1.8 with inlet pressure of 500 mbar (15 inHg), proceed as follows:

a. If the display shows “Leak Measure”, press LEAK MEASURE/CONTROL to regain control.

Note: The pressure/vacuum pumps must be switched on.

b. Press ROC/Ps RATE to select rate of change of static. c. Enter required rate of change e.g, 1000 mbar/min, (30 inHg/min).

Page 53

Testing Aircraft Systems or UUT

d. Press EPR then RATE to select EPR rate. e. Enter required value e.g, 5 EPR/min and press ENTER. f. Press ALT/Ps. g. Enter 500 mbar (15 inHg) and press ENTER. h. Press EPR. a. An EPR of 1.8 will quickly be achieved.

Note: EPR testing can also be performed by specifying the actual INLET and OUTLET values.

3.6 Testing Aircraft Systems or UUT

WARNING OBSERVE THE APPROPRIATE SAFETY INSTRUCTIONS AND PROCEDURES

DETAILED IN THE AIRCRAFT MAINTENANCE MANUALS OR COMPONENT MAINTENANCE MANUALS.

a. Connect the applicable hoses and adapters to the aircraft system or UUT. b. Do a leak test detailed in the appropriate aircraft or component manual, to make sure that

the connections to the aircraft system or UUT are not leaking.

3.6.1 Go To Ground and Shut-down

At the end of testing and, before disconnecting from the aircraft system or UUT, the pressures in the system must be taken to the local atmospheric pressure (ground) with zero airspeed, as follows:

a. If the display shows “Leak Measure”, press LEAK MEASURE/CONTROL. b. Press GROUND, F1, [Go To Ground]. c. Wait for the display to show “Safe At Ground”. d. It is now safe to disconnect the aircraft system or UUT.

The pressure in the system changes towards ground. The ground pressure or “Ground” replaces the static or altitude aim value.

3.6.1.1 While Going to Ground

If required, new rates of change can be entered while going to ground.

• To change the ROC or static rate, press ROC/Ps Rate and enter the new value.

• To change the airspeed or Qc rate, press SPEED/Qc then RATE and enter the new value.

Page 54

Chapter 3. OPERATION

3.6.1.2 To Change from Going to Ground

To change, enter a new altitude (static) or new airspeed (Qc) set-point.

a. When the airspeed reaches zero and the Ps channel pressure nears ground, the

system re-measures atmospheric pressure to update the recorded ground pressure (QFE). During this period, the display shows the message “Checking Ground”. The ADTS 405 then reconnects to the aircraft system and equalises the system pressures. Commands cannot be entered when these two messages are displayed.

The Ps channel pressure is then taken to the new recorded atmospheric pressure and, at this new pressure, the display shows the message “Safe At Ground”. The ground vent and zero valves remain open to keep the aircraft system vented to atmosphere.

b. Press CLEAR/QUIT to continue with normal operation. The ground vent and zero

valves automatically close.

3.6.2 SETUP and CONFIGuration options

The SETUP key provides access to secondary functions using a menu system, extends the keyboard and allows many of the ADTS 405 functions to be customized. All changes made under SETUP are temporary and will be lost when the system is switched off. The range of options allowed in set-up is determined by the set-up mode.

Example Press SETUP and the display shows:

F1 Units

SETUP

1. Pressing a function key (F1 to F4) enters the set-up menu.

2. When in set-up, pressing a key (ALT Ps in this example) enters a menu or setting that applies to the parameter.

F2 Limits F3 Oscillation

F4 More

ALT

Figure 3-8: Set-up example

Enter Height of Instrument Above ADTS > 0

Page 55

Testing Aircraft Systems or UUT

3.6.2.1 To change units in FULL SETUP Mode as follows:

a. Press SETUP. b. Select [UNITS]. c. Select required pressure units for display using [NEXT], [PREV] and [SAVE]. d. Use CLEAR/QUIT to return to pressure display.

3.6.2.2 To change units in MINIMUM SETUP Mode as follows:

a. Press SETUP. b. Select [UNITS TYPE]. c. Select [PRESS]. d. Use CLEAR/QUIT to return to the main pressure display.

Note: Pressure units cannot be selected when set-up mode is switched off.

Holding down the F1 key while pressing SETUP provides access to the CONFIGuration mode. CONFIGuration is similar to SETUP with many identical functions. The changes made under CONFIGuration are permanent and remain set after the system is switched off. Configuration can be used to change the power-up default settings of the ADTS 405 functions:

a. Holding down F1 then pressing SETUP causes the system to enter CONFIGuration mode.

CONFIGuration may be password protected using a four digit PIN. If PIN protected, the display prompts for entry of the PIN. Press each digit of the PIN in turn (ENTER is not required) as each digit is entered, an asterisk appears. If an incorrect PIN is entered, the

complete PIN is requested again. b. When the correct PIN is entered, the CONFIG menu appears. c. The PIN may be changed using CONFIG,-000. d. To use the configuration menu, press the appropriate function key to select the required

menu item. To configure a parameter key, enter configuration menu then press the

required parameter key. Each parameter key configuration provides changes to the normal

user mode function and to the settings available in the set-up menu. e. Once a parameter has been changed in configuration, use CLEAR/QUIT to return to the

previous menu. After all required key parameters have been changed, repeatedly press

CLEAR/QUIT until the display shows the normal operating mode.

Page 56

Chapter 3. OPERATION

FULL SET-UP

Key/selection Function and comments

SETUP + KEY PRESS

PyppwixytwipigxihmrgsrƉkyvexmsr

[UNITS] [NEXT] [PREV] [SAVE] [LIMITS] [NEXT] [PREV] [SEL] [OSC] [Ps]

[START] [STOP] [FREEZE] [AMPL/FREQ] [AMPL]

Data Entry

[FREQ]

Data Entry [Pt] [MORE] [CONTROL]

[Ps Pt DUAL]

[DISPLAYS/OPTIONS]

[

DISPLAY TYPE] [NEXT] [PREV] [SAVE] [I/O SETUP] [ENET SUPER]

[-] [FIXED IP] [ADDR] [MASK] [BCST] [SHOW ACTIVE]

[ENET COMMS]

[-]

[SHOW ACTIVE]

[OPTIONS]

[CLOSE O/P VALVES] [OPEN O/P VALVES] [SYSTEM SELF TEST]

Select units Step through available units

Step back though available units Select displayed units Select set of limits (aircraft 1\aircraft 2 ...) As NEXT, in reverse order Select displayed limit set Oscillate about aim For Ps channel

As for Ps channel

Selects Ps only, Pt only or Dual channel control

Select single, dual or triple display (SINGLE\DUAL\TRIPLE\ENCODER) As NEXT, reverse order Save displayed Display Type Configure Ethernet Supervisor node Ethernet parameters Menu option not available. DHCP select in CONFIG only Setup fixed IP Address IP Address Subnet Mask Broadcast Confirm active IP settings Communications node Ethernet parameters Menu option not available. DHCP select in CONFIG only Menu option not available. Fixed IP select in CONFIG only Confirm active IP settings See option manual Close output val Open output valves Start self test

ves

Page 57

Testing Aircraft Systems or UUT

FULL SET-UP Continued

Key/selection Function and comments

SETUP contd...

SETUP + KEY PRESS

ALT

data entry

SPEED

[AUTO ZERO]

[ON] [OFF]

[CAS/TAS]

[CAS] [TAS]

[Pt TEMPERATURE]

data entry

MACH

[DEFAULT] [OFF] [ON]

RATE TIME

[WAIT/TIME ON F1]

[TIME]

[WAIT] Change to WAIT

data entry

[WAIT TIME F2]

RATE

[ON]

[OFF] Manual

LEAK MEASURE

[AUTO LEAK]

[ON] [OFF]

[AUTO LIMIT]

[ON]

[OFF]

GROUND

data entry

PORT REMOTE Remote mode lock, see conƉguration

Full or minimum set-up selected in conƉguration.

Altitude correction value

Auto zero function

Temperature for true airspeed Enter Pitot temperature Mach limit DeƉrihfy current limits Removes Mach limit OrefpiwWeglpmqmt Enter new Mach limit data entry Set-up WAIT and TIME time periods For F1 Change to TIME

of TIME time of WAIT time See [Wait/Time on F1] See [Wait/Time on F1] [WAIT TIME F3] Automatic airspeed rate Automatic

uto leak recovery on or oƇ

Auto limit recovery on or oƇ

See Line Switching Unit User Manual

Page 58

Chapter 3. OPERATION

FULL SET-UP and MINIMUM SET-UP

SETUP contd...

[DATE/TIME]

data entry

[TIME]

data entry

HELP

[NEXT]

data entry

[PREV] As NEXT, in reverse order

data entry

d (Nyhke DOWN)

Full set-up selected in conƉkuration.

Adjust date and time Enter Date [DATE]

Enter Time Help on SETUP Enter nudke valuesc (Nyhke UP) (ALT \ CAS / TAS \ MACH \ ROC \ RATE \ RATE CAS)

Aeronautical units or (Ps \ Pt \ Qc \ EPR \ RATE Ps \ RATE Qc \ RATE EPR)

Pressure units

Requirehryhkimrgrement As Nudke UP

MINIMUM SET-UP

Key/selection

SETUP

[UNITS TYPE] Set units type

[AERO] Set units to default aeronautical units [PRESS]

[LIMITS]

[NEXT] [PREV]

[SEL]

data entry PORT HELP EXECUTE TEST PROGRAM

[PRINT]

[PRINT FILE] Print result Ɖle option

[NEXT] [PREV] [PRN]

Function and comments

Minimum set-up selected in conƉkuration.

Set units to default pressure units Select set of limits (aircraft 1\aircraft 2...) As NEXT, in reverse order Select displayed limit set Altitude correction value

See user manual K0157 Help on set-up Result Ɖle related print option Print/save mode selection [PRINT/SAVE] Pvmrxkirirated result data Sazikirirated result data to Ɖle [SAVE]

Select next result Ɖpe Select previous result Ɖle

Print selected result Ɖle

Page 59

CONFIGURATION

Testing Aircraft Systems or UUT

Key/selection

ONFIG (SETUP + F1)

[UNITS] Default units

[AERONAUTICAL] Sele ct default aeronautical units

[PRESSURE] Select default pressure units

[TEMPERATURE] Select default temperature units

[LIMITS] MsrƉkyviwixw of limits

[EDIT LIMITS]

[NEXT] [PREV] [SAVE]

[C]

[EDIT EXISTING]

[NEXT]

[PREV]

[SEL]

Function and comments

Hold F1 and press SETUP to enter CONFIG.

Step through available units Step back through available units Save selected units

°C °F [F]

Change limit values Change existing values (aircraft 1 \ aircraft 2...) As NEXT, in reverse order Select aircraft to EDIT limits NAME \ MAX ALT \ MIN ALT \ MAX CAS \ MIN CAS \ MAX

MACH \ MAX ROC \ MAX RATE

[NEXT]

[PREV] As NEXT in reverse order [ON/OFF] data entry [ALPHA]

[BACK]

[MAX LIMITS]

[EDIT NEW]

[CLEAR LIMITS] Clear an existing set of limits

[NEXT] [PREV] [SEL] Clear selected limits

[YES]

[NO]

[LOCK AIRCRAFT]

[ON]

[OFF]

[DEFAULT AIRCRAFT]

[NEXT]

[PREV]

[SEL]

CAS \ MIN Ps \ MAX Ps \ MIN Qc \ MAX Qc \ MAX RATE Ps

\MAX RATE Qc \ ARINC

LIMITS \ AL

Switch (tog gle) to ARINC 565 limits Limit value Insert alphabet character in name Nudge up select next letter in alphabet Nudge down select Delete last character in name Create maximum limits called “MAX” Create new limits. As for [EDIT EXISTING][SEL] above

(aircraft 1 \ aircraft 2...) As NEXT, in reverse order

CsrƉvq delete

Only DEFAULT limits available in USER mode SETUP can be used to select aircraft

(aircraft 1 \ aircraft 2...) As NEXT, in reverse order Select aircraft limits used at power-up. May be locked

TITUDE CORRECTION

previous letter in alphabet

Page 60

Chapter 3. OPERATION

CONFIGURATION Continued

CONFIG (SETUP + F1) contd...)

[MORE]

[CONTROL] Ps Pt DUAL control

[Ps Pt DUAL]

[DISPLAY/OPTIONS

[DISPLAY TYPE] Select single, dual or triple display

[PREV]

[SAVE] Save displayed Display Type

[ENET COMMS]

[OPTIONS] See option manual [CLOSE O/P VALVES] [OPEN O/P VALVES] [SYSTEM SELF TEST]

[DATE FORMAT]

[DMY]

[SETUP MODE]

[OFF] [MIN] [FULL]

Hold F1 and press SETUP to enter CONFIG.

Ps single pipe testing of altimeters. Pt single pipe

testing of airspeed and Mach indicators. DUAL normal

combined system testing.

(SINGLE/DUAL/TRIPLE/ENCODER) [NEXT] as NEXT, in reverse order

MsrƉkyvi Ethernet [I/O SETUP]

Supervisor node Ethernet parameters [ENET SUPER] [DHC] Network Allocated IP [FIXED IP] ]ixytƉ|ihSZKhdress

[ADDR] [MASK] [BCST]

[SHOW ACTIVE]

[FIXED IP] ]ixytƉ|ihSZKhdress

[ADDR] [MASK] [BCST]

IP Address

Subnet Mask

Broadcast

CsrƉvqegxmziSZwixxmrks

Communications node Ethernet parameters

Network Allocated IP [DHCP]

]ixytƉ|ihSZKhdress

Subnet Mask

Broadcast

CorƉvq active IP settings [SHOW ACTIVE]

Close output valves

Open output valves

Start self test

Format of daxixi|t

UK format DD/MM/YY

US format MM/DD/YY [MDY]

Limits acce

ss to set-up functions

Page 61

Testing Aircraft Systems or UUT

CONFIGURATION Continued 2

CONFIG (SETUP + F1) + KEY PRESS Hold F1 and press SETUP to enter CONFIG.

[SPEED] Auto zero function

[AUTO ZERO]

[ON]

[OFF]

[CAS/TAS] ConƉgu

[CAS] [TAS]

[Pt TEMPER-ATURE]

data entry

ConƉgure Pt temperature

re calibrated or true airspeed

RATE TIME

[WAIT/TIME ON F1] For F1

[WAIT] data entry data entry

[WAIT/TIME ON F2]

RATE Automatic airspeed rate

[OFF] Manual

LEAK MEASURE

[AUTO LEAK ON

[ON]

[OFF]

[AUTO LEAK LOCK

[ON] [OFF]

[ON]

[OFF]

[AUTO LIMIT LOCK] Lock auto limit recovery state

[ON] [OFF]

/OFF]

]

FF]

ConƉgure WAIT and TIME times

Change to TIME [TIME] Change to WAIT TIME time period WAIT time period) See Wait/Time on F1 See Wait/Time on F1 [WAIT/TIME ON F3]

Automatic [ON]

Auto leak recovery lock

Lock auto leak recovery lock

Auto leak recovery state [AUTO LIMIT ON/O

Page 62

Chapter 3. OPERATION

CONFIGURATION Continued 3

CONFIG (SETUP + F1) + KEY PRESS contd...

GROUND

dexeirxvy

PORT REMOTE

[ON] [OFF]

ETP

AUTO RUN

[NEXT]

[PREV] [NONE]

[SEL]

ERASE PROGRAMS

[NEXT] [PREV] [DEL]

RESULTS

[PRINT/SAVE]

[PRINT] Girivetihviwypx dexetvmrxid

[SAVE]

[ERASE FILE]

[NEXT] [PREV]

Xyhki yt ( c )

[DEL] Dipixi wipigxi

RophP:erhtriww]O^_Zxs irxir CONFIG.

AivƉiphepxmxyhijsv[XRhmwtpey

\ijir to stxmon ywiv meryep Rimoti mshi psck

Ryr xiwx tvskveq on ts{ivyt

Rijivxs stxmsr ywivqeryep

Dipixi xiwxtvskvem

Zvmrx-]eziqshiwipigxmsn

Qirivexihviwypx dexewezihmreƉpi RiwypxƉpihhipixistxmsn ]ipigxri|xviwypxƉpi ]ipigx tvizioyw viwypt Ɖpi

d viwypx Ɖpi

[NEXT]

[PREV] ewXOb^mrvizivwisvhir

hexeirxry

Xyhki do{n ( d ) [000]

dexeirxvy

ALT\CAS/TAS\MACR\ROC\RATE CAS\Pw\Pt\[c\EPR\RATE Pw.RATE [c\RATE EPR)

Riuymvihryhkimrgviqirt Kw nydki yt PIN tvsxiction PIN (cshi ryqfiv to irxiv CONFIG) wix to 0000 jsv “no

gshiviuymvih”

Page 63

Communications panel options

3.7 Communications panel options

3.7.1 Ethernet System

The ADTS405 is equipped with a TCP/IP Ethernet interface, and appears on the network as up to two separate IP addresses. The first IP address relates to the ADTS instrument supervisor and contains access to the functions described above. The second address relates to the communications adapter (if fitted). There are no user related functions accessible within the communications adapter IP port at this time, however the functionality of the port may be assessed and tested if required.

The system is supplied with factory default IP addresses as follows:

192.168.2.2 Supervisor

192.168.2.3 Communications Adapter

The ports are most simply tested using a network ‘ping’ to these addresses. Connect the ADTS to a computer equipped with a network interface, using a UTP network cable.

The network interface should be configured with an IP address on the same subnet.

Example:

If the ADTS has the default IP addresses then the host network address should be configured as

192.168.2.1/255.255.255. The method for doing this may vary but the following example screens show the method under Windows 7. It is suggested to take careful note of the original computer settings so they may be restored after the check.

Figure 3-9: Configuring Windows For ADTS Subnet IP Address

A ping to either of the above ADTS IP addresses should give the following typical response seen in figure 3-10 Ping Test from Windows Command Prompt below:

Page 64

Chapter 3. OPERATION

Figure 3-10: Ping Test From Windows Command Prompt

The IP address settings may be changed to match local network requirements using the CONFIGuration and SETUP menus, as described in section 3.6.2.

An SSH server is available on each IP address for general purpose file access. The factory default user name and password for accessing the server is:

User Name adts Password druk

It is strongly advised that the default password be changed as part of the initial end user customisation.

3.7.1.1 Changing the Default Access Password

Configure the network interface with an IP address on the same subnet (as described above). Open an SSH client program. If using a PC then a third party client such as PuTTY may be used.

Example a. Open the Configuration screen. b. Enter the supervisor IP address and select the SSH as the required connection type, see

figure 3-11, PuTTY Configuration.

Figure 3-11: PuTTY Configuration

Page 65

Communications panel options

c. Press “OPEN” and select “YES” to any security warnings. d. Enter the user name “adts” and the default or current password when prompted. e. At the $ prompt, enter command <passwd> followed by the <RETURN> key. f. Follow the screen prompts by Enter the existing password followed by the new password

and further confirmation entry. The results of a successful change should look like the PuTTY window in figure 5-7 below:

Figure 3-12: Changing the default password

g. Close the PuTTY window and confirm that a new connection can still be gained using the

new password.

3.7.2 Access ADTS files

Working with the filing system is best done using a window based FTP client that also supports SSH, such as Win SCP. The following example sequence shows how access is gained and what file directories are visible.

a. Open Win SCP and create an SFTP login using the following credentials and save under a

suitable name for future connections:

Host Name: 192.168.2.2 (being the IP address for the motherboard) Port: 22 User name: adts Password: druk Private key: (leave blank)

b. Connect to the unit by pressing “Login”.

Figure 3-13: WinSCP Login Screen

Page 66

Chapter 3. OPERATION

c. The ADTS 405F file system directories (under folder fs\etfs) are visible in the right hand

pane as shown in figure 3-14 File system directories screen below:

Figure 3-14: ADTS File System Directories Screen

The example ETP (Test Programs) directory can be seen to contain two default test programs, “altosc” and “asposc”, used for oscillation of altitude and airspeed. New prepared programs may be added from the PC left panes by drag and drop to the ETP directory. They will then become available for stand-alone use under the front panel ETP key. Unwanted programs may be deleted from the ETP directory as required.

Similarly, any reports previously generated using the “PRINT” key will be available under the “SPOOL” directory. This may be transfer to the PC window for archive or hard copy print as required.

d. The access session can now be closed using the Win SCP “Session” tab > Disconnect.

3.7.3 Connection of the IEEE 488 Facility

CAUTION THE OPTION CONNECTOR COVER MUST ALWAYS BE FITTED WHEN THE

EQUIPMENT IS USED OUTDOORS OR IN AN ENVIRONMENT WHERE MOISTURE MAY ENTER THE UNIT THROUGH THE OPTION CONNECTOR PANEL.

To enable and disable this IEEE 488 facility access the configuration menu. When enabled, this facility will be available from power-up of the ADTS 405 with the settings held in nonvolatile memory.

The IEEE 488 connector is located behind the (optional) communications module cover plate and is configured as detailed in Table 3-2 IEEE 488 facility below.

Page 67

Enabling the Altimeter Encoder Option

Table 3-3: IEEE 488 facility

Standard

connector pin

number

1 D101 13 D105 2 D102 14 D016 3 D103 15 D107 4 D104 16 D108 5 E01 17 REN 6 DAV 18 Gnd [2] 7 NRFD 19 Gnd [2] 8 NDAC 20 Gnd [2]

9 IFC 21 Gnd [2] 10 SRQ 22 Gnd [2] 11 ATN 23 Gnd [2] 12 Shield [1] 24 Gnd [2]

Function

[1] Chassis connection [2] 0V return for signals (not chassis)

Standard

connector pin

number

Function

3.7.3.1 Enabling the IEEE 488 Facility

To enable the IEEE 488, set the ADTS 405 to the SCPI IEEE option and set to Address 1 as follows:

a. Press and hold down F1 then press SETUP to enter the configuration menu. Release both

keys. b. If requested, enter PIN details. c. Press [MORE], [DISPLAY/OPTIONS], [OPTIONS], [IEEE-488], [SCPI/OPT2]. d. Check the display shows that SCPI is selected, if the settings are correct, press CLEAR/

QUIT until the display shows the main pressure display.

3.8 Enabling the Altimeter Encoder Option

a. Press and hold down F1 and press SETUP to enter the configuration menu. Release both

keys. b. Press [MORE], [DISPLAY/OPTIONS], [DISPLAY TYPE], [NEXT], [ENCODER]. c. Check the display shows “Encoder” is selected. d. Press [SAVE], then repeatedly press CLEAR/QUIT until the display shows the following:

Note: With an incorrect bit combination such as all zeros, the display shows “ENCODER ERROR” in the place of the decoded value.

Page 68

Chapter 3. OPERATION

Page 69

Introduction

4. MAINTENANCE

4.1 Introduction

This section details the recommended maintenance tasks to be carried out by the operator. The maintenance chart shows the periodicity of each task and a code referenced to the task detailed in

4.3 Maintenance Tasks.

Table 4-1: Maintenance Chart

Task Code Period

Inspect A Daily, before use

Inspect B Weekly

Test C Before use

Test D Daily, before use

Calibrate E Every 12 months *

Replace F

Clean G Weekly *

Service H

Service J

As detailed in fault finding or when detailed after inspection

1,000 hours recorded by the pump unit elapsed time indicator or the equipment running log

3,000 hours recorded by the pump unit elapsed time indicator or the equipment running log

* Periodicity may change depending on usage and environment, refer to the Engineering Authority.

4.2 Materials

This lists materials required for the user to maintain the ADTS 405. The item number and name in the table identifies the item in the maintenance tasks (for example, “Use a soft bristle brush, item 4, Table 4-2”). The description provides further information required to identify the item.

Table 4-2: Materials List

Item

Number

1 Cloth, Cotton, Lint-free

Alcohol, Isopropyl (MIL-A-10428,

Grade A) 3 Detergent, Mild, liquid 4 Brush, soft bristle (MIL-B-43871)

Note: Equivalent substitutes can be used.

Item Name, Description

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Chapter 4. MAINTENANCE

Table 4-3: Tool and Test Equipment Requirements

(1)

Ref Code

1 Multimeter, Digital Fluke 87V

2 Insulation tester, 500V Fluke1507

(2)

Nomenclature

(3)

Example Manufacturer’s

part number

4.3 Maintenance Tasks

a. Visually inspect the unit for obvious signs of damage and check that all the equipment is

present; record any deficiencies.

b. Visually inspect the pneumatic output connectors for damage.

i. Inspect the small o-ring on each pneumatic output connector for cuts and any

signs of wear; if necessary, replace as detailed in 4.4 ROUTINE MAINTENANCE.

ii. Visually inspect pneumatic hoses, electrical cables for cuts, splits and damage;

replace as necessary.

c. Before use, power-up the unit as detailed in Section 3 OPERATION.

i. Check the date of the last calibration and, if necessary, refer to task E.

ii. Record any error messages and refer to Section 5 TESTING AND FAULT FINDING. d. Daily and before use, carry out the SST detailed in Section 5. e. Normal calibration period is 12 months. When calibration is due, the unit should be

withdrawn from service and returned to depot or calibration facility.

1. The date of calibration is stored in the unit and displayed in the power-up sequence and on a label on the front panel.

2. Do not use a unit with out-of-date calibration.

3. Engineering authority may change the periodicity of calibration depending on usage and the operating environment.

f. As detailed in fault finding or when detailed after inspection replace the listed items in 2-1

“Packaging”.

g. Clean the unit every week.

i. Clean the front panel with a damp lint-free cloth (item 1, Table 4-2 MATERIALS

LIST) and mild liquid detergent (item 3, Table 4-2 MATERIALS LIST).

ii. Remove any stubborn dirt using Isopropyl alcohol (item 2, Table 4-2 MATERIALS

LIST) and allow to dry.

iii. Clean all pneumatic connectors with a soft brush (item 4, Table 4-2 MATERIALS

LIST).

iv. Remove any stubborn dirt using Isopropyl alcohol (item 2, Table 4-2 MATERIALS

LIST) and allow to dry.

h. Withdraw the unit from service and return to the repair depot.

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Routine Maintenance

4.4 Routine Maintenance

INFORMATION Absolute cleanliness of the work area, tools and equipment is

essential. Carry out the maintenance tasks detailed in 4.3 “Maintenance Tasks”.

4.4.1 Servicing Procedures

The following procedures provide instructions to test and replace items for the operator. Return the unit to the service depot for further testing and replacement of items.

4.4.2 Replacing the output connector o-ring

Do the inspection as detailed in maintenance task B, do the following if the o-ring is worn or damaged:

a. Carefully remove the o-ring from the small groove at the top of the connector. b. Fit a new o-ring in the small groove at the top of the connector. c. Check the o-ring is located in the groove and not damaged after fitting.

Note: Damage to this o-ring causes leaks.

Figure 4-1: Output Connector O ring Seal

4.4.3 Fuse Replacement

Replace the fuse when detailed in Section 5, “Testing and Fault Finding”

WARNING THERE IS A RISK OF ELECTRIC

PROTECTIVE EARTH IN PLACE. THE ADTS MUST, AT ALL TIMES, BE CONNECTED TO THE SUPPLY PROTECTIVE EARTH/GROUND. THE POWER SUPPLY CABLE AND CONNECTOR MUST BE CORRECTLY RATED FOR THE POWER SUPPLY. ONLY USE POWER CABLES SUPPLIED BY GE SPECIFICALLY FOR THE ADTS.

SHOCK/ELECTROCUTION

IF THERE IS NOT A

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Chapter 4. MAINTENANCE

4.4.3.1 Replacing ADTS 405F AC Fuses

On the ADTS 405F two 20mm High Breaking Capacity fuses are located in the holders mounted on the pump rack front panel and protect the entire unit.

Figure 4-2: ADTS 405F AC Fuse Positioning

a. Set the power switch to OFF. b. Isolate the power supply to the instrument and disconnect the power supply connector (1). c. Remove the fuse holders (2) from the front panel and replace the fuse cartridges (3). d. Refit the fuse holders (2) in the front panel. e. Connect the power supply connector and switch on the power supply. f. Set the unit power switch to ON.

Note: If the fuse blows immediately after switch-on contact the manufacturer or Service Agent.

4.4.3.2 Replacing ADTS 405F DC Fuses

On the ADTS 405F, two 1.25” Time Lag fuses are located in the holders mounted on the pump rack front panel and protect the entire unit. The T20AH 250V fuse (left) is connected in the positive (+) feed to the pressure controller rack. The T32A fuse (right) is connected in the common (0v) return from both the Controller rack and Pump rack.

Note: On the ADTS 405R, DC over-current protection fusing is internal and not user serviceable.

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Routine Maintenance

Figure 4-3: ADTS 405F DC Fuse Positioning

4.4.3.3 Replacing ADTS 405R AC Fuses

On the ADTS 405R, two 20mm High Breaking Capacity fuses are located in the holder mounted on the power input connector on the rear of the rack and protect the unit.

a. Set the power switch to OFF. b. Isolate the power supply to the instrument and disconnect the IEC power supply a. connector. b. Pull the capped lid of the fuse carrier (2) on the power supply input socket assembly. c. Replace the fuse cartridges (3). d. Refit the fuse carrier (2) flush in the power supply inlet socket assembly. e. Refit and reconnect rack-mounted units as detailed in Section 2, INSTALLATION. f. Switch on the power supply and set the power switch to ON. The instrument should now

be operational.

Note: (1) To gain access to rack-mounted instruments, it may be necessary to partially or completely withdraw the instrument. Isolate pneumatic supplies and depressurise all pressure supply inlet and outlet lines.

Note: (2) If the fuse blows immediately after switch-on, contact the manufacturer or Service Agent.

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Chapter 4. MAINTENANCE

Figure 4-4: ADTS 405R AC Fuse Positioning

4.5 Cable tests

CAUTION Do the check detailed in Testing and Fault Finding, Section 5 prior to

performing a cable test.

Hand Terminal Cables - parts AS405-33-1891M0 (2m) and AS405-34-1891M0 (18m)

a. Prepare to measure continuity using the DMM (item 1, Table 4-3) set to the applicable

resistance range.

b. Measure the continuity between corresponding six pins at each end of each cable assembly.

The measured resistance must not exceed 2.0 ohms.

Note: This resistance value is the expected maximum value for the 18 metre (60ft) cable. The resistance value varies depending on the length of the cable.

c. Measure insulation using the Insulation tester (item 2, Table 4-3), set to the 250V test range. d. Measure the insulation resistance between the shell of the connector and all individual pins

in turn.

e. Measure the insulation resistance between the shell of the applicable connectors and all

pins in turn. f. Measure also the resistance between individual pairs of pins (i.e., 1-2, 1-3, 1-4, 1-5, 1-6, g. 2-3, 2-4, 2-5, 2-6, 3-4, 3-5, 3-6, 4-5, 4-6 and 5-6). In all cases the resistance must exceed 10 M

ohms.

Page 75

Cable tests

AC Power Regional Line Plug Cables - parts AA405F-1 to AA405F-16

a. Prepare to measure continuity using the DMM (item 1, Table 4-3) set to the applicable

resistance range.

b. Measure the continuity between corresponding ADTS connector pin and the regional power

plug pin using the connectivity table 4-4 below. The measured resistance must not exceed

0.8 ohms.

Note: This resistance value is the expected maximum value for the longest 10 metre (32ft) cables. The resistance value varies depending on the length of the cable.

c. Prepare to measure insulation using the Insulation tester (item 2, Table 4-3), set to the 500V

range. This test will be most practically performed at the regional line plug end of the cable. d. Measure the insulation resistance between Live and Protective Ground. e. Measure the insulation resistance between Neutral and Protective Ground. f. Measure the insulation resistance between Live and Neutral. g. In all cases the insulation resistance must exceed 2 M ohms.

Table 4-4: AC Input Connector

ADTS Pin European Colour U.S.A. Colour Function

1 Brown Black Live 4 Blue White Neutral

EARTH Green/Yellow Green Protective Ground

DC Power Cable – part AS405-31-1891M0

a. Prepare to measure continuity using the DMM (item 1, Table 4-3) set to the applicable

resistance range. b. Measure the continuity between corresponding ADTS connector pin and the conductors at

the open end of the cable using the connectivity table 4-5 below. The measured resistance

should not exceed 0.5 ohms.

Note: This resistance value is the expected maximum value for the 5 metre (16ft) cable length supplied.

c. Prepare to measure insulation using the Insulation tester (item 2, Table 4-3), set to the 500V

range. This test will be most practically performed at the open end of the cable. d. Measure the insulation resistance between Grey (+28V) and Green (Protective Ground). e. Measure the insulation resistance between White (0V) and Green (Protective Ground). f. Measure the insulation resistance between Grey (+28V) and White (0V). g. In all cases the insulation resistance must exceed 2 M ohms.

Table 4-5: DC Input Connector

ADTS Pin Cable Colour Function

1 Grey + 28V 2 White 0V Return

EARTH Green Protective Ground

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Chapter 4. MAINTENANCE

Page 77

Introduction

5. TESTING AND FAULT FINDING

5.1 Introduction

The ADTS 405 contains a built-in, self-test and diagnostic system. The system continuously monitors the performance of the unit and at power-up carries out a self-test. Warning and error messages are displayed during normal operation if out of range values are entered or if faults occur.

This section details the standard serviceability test and the error messages and codes that can be displayed. A fault diagnosis flow chart and table provide the probable cause and procedures to rectify specific symptoms.

5.2 Error messages

At power-up, the ADTS 405 indicates if there is a fault by displaying an error code for example: 701:HHHH PS SELF-TEST ERROR The HHHH is a hexadecimal code containing additional information record the whole error code

check that the error code is complete and listed in the table before returning the unit to the repair depot. In the event of a fault, the built-in, self-test and diagnostic system displays an error message and error code. A unit displaying an error should be returned to the repair depot:

Table 5-1: Error Messages

Error Code

515 PSU NO LONGER READY 516 UNKNOWN CONTROLLER ERROR 517 RING TIME OUT 601 INTERNAL RAM ERROR 603 ERROR WRITING TO EEPROM 701 Ps SELF-TEST ERROR 702 Pt SELF-TEST ERROR • 703 Ps SELF-TEST TIME OUT ERROR 704 Pt SELF-TEST TIME OUT ERROR 710 Ps CONTROLLER ERROR • 711 Ps CONTROLLER ERROR • 712 Ps CONTROLLER ERROR • 713 Ps CONTROLLER ERROR • 714 Ps CONTROLLER ERROR • 717 Ps CONTROLLER ERROR • 720 Pt CONTROLLER ERROR • 721 Pt CONTROLLER ERROR • 722 Pt CONTROLLER ERROR • 723 Pt CONTROLLER ERROR • 724 Pt CONTROLLER ERROR • 727 Pt CONTROLLER ERROR • 801 IEE488 DRIVER FAILED TO OPEN 802 IEE488 DRIVER FAILED TO RESET 900 INTERNAL SOFTWARE 999 INTERNAL ERROR

Error Message

Hexadecimal

Code

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Chapter 5. TESTING AND FAULT FINDING

If the display shows ERROR 703 START UP Ps SELF TEST TIME ERROR. Check that the expansion port plug (item 13, Table 2-1) is correctly connected in the expansion port on the rear panel (Fig. 2-4).

Note: Some errors display extra information using a four digit hexadecimal code. This should always be recorded with the error number to provide information for the repair depot.

5.3 Standard Serviceability Test

The following procedure can be used to check the functions and facilities of the ADTS 405. For further information refer to/see Section 6, “REFERENCE AND SPECIFICATION”.

In the following procedures:

• All key presses are highlighted in bold and shown as identified on the key-pad.

• Key presses inside brackets e.g, [MORE], are soft key presses (i.e, function key selections {F1 to F4} indicated on the display screen).

Note: When the display shows a message indicating entry of incorrect data or values, pressing CLEAR/QUIT clears the message and allows the correct entry to be made.

5.3.1 Procedure

5.3.1.1 Connection and power-on checks

a. Connect power to the unit and, if necessary, connect the hand terminal. b. Make sure that the blanking caps are fitted to the Ps and Pt front panel outputs. c. Check power indicator is on. d. Set the front panel switch to OPERATE. e. Set the front panel switch for the pump unit to PUMP ON and check that the pump power

indicator lights.

f. Check the display shows the first stage power-up message as below (where: xx is the

version number of the installed display driver software):

DK 425 V.xx

Display Power Up

Please Wait

g. Check the second stage power-up message displays as below (where: xx is the version

number of the installed main operating software):

DRUCK

ADTS 405

DK 415

VER.xx

Note: “ADTS 405" may be replaced by an alternative identity string. The software version may also be supplemented by extra alpha characters.

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Standard Serviceability Test

h. The ADTS 405 displays any detected errors. Check that the power-up sequence continues

through the following stages without error:

• Calibration date.

• Self-test.

• Measuring ground pressures.

• Equalizing system pressures.

i. Check that the display then changes to show measured altitude and airspeed (CAS or TAS)

values.

j. Press the MACH/Pt key and check the display changes to show Altitude and Mach

measured values.

Note: (1) The displayed values change as atmospheric pressure changes at power-up.

(2) The display shows the “WARMUP” message in the lower right corner indicating that full pressure accuracy and stability may not be achieved. The WARMUP message clears after 15 minutes. This indication does not inhibit operation and these tests may proceed without waiting for the message to clear.

(3) An automatic zero (if enabled) takes place regularly. The display shows “ZERO” and the state of the valves, on the mimic panel, change for approximately six seconds. Commands may still be entered while auto-zero takes place.

5.3.1.2 Pump unit (ADTS 405F)

a. Set the front panel switch for the pump unit to PUMP ON and check that the pump power

indicator lights. b. Press LEAK MEASURE/CONTROL to go to control mode. c. Enter an altitude aim of 5000 ft by pressing 5, 0, 0, 0, ENTER. d. Enter rate or use default rates. e. Enter an airspeed aim of 500 knots by pressing SPEED/Qc, 5, 0, 0, ENTER. f. Check that these aim values are achieved.

5.3.1.3 Completion

On completion of this test procedure, select GROUND, [Go to Ground] wait until the unit is at ground, switch off and disconnect the power supply.

5.3.2 Fault Finding

In the event of a more serious ADTS system fault which prevents visibility of specific error messages and fault codes on the instrument display, fault location chart Figure 5-1 can be used in conjunction with Table 5-2 to direct what service or repair actions may be required.

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Chapter 5. TESTING AND FAULT FINDING

5.4 Fault Diagnosis

If a fault occurs, refer to the fault location chart, Figure 5-1 and Table 5-1.

SET POWER SWITCH

TO OPERATE

Power-up sequence

LDK 425 Vx.xx

Display Power Up

PLEASE WAIT

DRUCK

ADTS 405

DK 415

VER x.xx

Last Calibration

mm/dd/yy (mdy)

RPT Transducer

PLEASE WAIT

Self Test

PLEASE WAIT

Measuring Ground

Pressures

PLEASE WAIT

SYSTEM STATUS

RED

SYSTEM STATUS

ORANGE

SYSTEM STATUS

GREEN

POWER

INDICATOR

FRONT PANEL

DISPLAY FITTED

FRONT PANEL

DISPLAY POWER-UP

MESSAGE

HAND-TERMINAL

FITTED

HAND-TERMINAL

DISPLAY POWER-UP

MESSAGE

POWER-UP

MESSAGE

OFF RED FLASHING

STATUS LIGHT

FROM NOW ON,

IFANY ERRORS OCCUR

THE SYSTEM LOGS THE OCCURRENCE

AND DISPLAYSAN ERROR MESSAGE

REFER TO ERROR CODES FOR FAULT

FINDING PROCEDURE

HAND-TERMINAL

FITTED

RED/ORANGE

F2F9

HAND-TERMINAL

FITTED

STATUS LIGHT

HAND-TERMINAL

BACKLIGHT ON

FRONT PANEL

DISPLAY POWER-UP

STATUS LIGHT

FLASHING

REDOFFGREEN

RED/ORANGE

STATUS LIGHT

FLASHING

RED/ORANGE

F9 F8 F2

MESSAGE

FLASHING

REDOFF GREEN

RED/ORANGE

REDOFFGREEN

Equalising System

Pressures

(Valves May Pulse)

PLEASE WAIT

ALT 0 ft Leak Measure CAS 0.0 kts Leak Measure

WARMUP

MAKE SURE POWER-UP SEQUENCE

IS COMPLETED WITHOUT ERRORS

TO CONFIRM SERVICEABILITY,

CARRY OUT THE

STANDARD SERVICEABILITY TEST

POWER-UP SEQUENCE

COMPLETED WITHOUT ERRORS.

IFANY FURTHER ERRORS OCCUR

THE SYSTEM LOGS THE OCCURRENCE

AND DISPLAYSAN ERROR MESSAGE

F2 F10

FUNCTIONALTESTING

COMPLETE

Figure 5-1: Fault Finding Chart

Page 81

Ventilating after Overpressure

Table 5-2: Fault Advice and Action

Fault Symptom Probable cause Action

F9 Status light off. Internal PSU fault.

F10 Status light steady orange. System fault.

Pump power-on indicator does not light.

AC or DC power indicator does not light.

Display power-up message appears and status light remains red. No front panel display power-up message, status light green. No hand-terminal display, status light green. Handterminal key illumination on. No hand-terminal display, status light green. Handterminal key illumination not on.

No front panel display DK415 message. Status

light flashing red/orange. No hand-terminal or front panel display DK415 message. Status light flashing red/orange.

Faulty power supply. Unserviceable fuse, AC/DC

power supply. Faulty power supply cable.

AC or DC power supply cable to 405 rack. 405 rack AC input fuse.

PSU fault.

Internal control computer fault.

Display fault.

Hand-terminal fault (cable OK).

Hand-terminal.

No front panel display detected.

Internal fault. No hand-terminal or front panel display detected. Handterminal fault. Cable fault.

Internal fault.

Check power supply. Check/replace power supply fuse or reset circuit protection device. Check/replace fuse (front panel).

Replace cable and re-test. Check/replace cables. Check/replace fuses. Record fault and return ADTS 405 to depot for repair.

Record fault and return ADTS 405 to depot for repair.

Use an available hand-terminal. Record fault and return ADTS 405 to depot for repair. Replace hand-terminal. Record fault and return handterminal to depot for repair.

Replace hand-terminal. Hand-terminal or hand-terminal cable fault. Record fault and return hand-terminal/cable to depot for repair. Record fault and return ADTS 405 to depot for repair.

Remove hand-terminal and retest.

Record fault and return ADTS 405 to depot for repair. Record fault and return ADTS 405 to depot for repair.

5.5 Ventilating after Overpressure

To calibrate or test the ADTS 405, an external pressure source is connected to the Ps and/or Pt output connectors. If, during calibration or test procedures, an overpressure occurs, the output valves close to protect the system.

After the valves close, pressure may be trapped in the internal system; the display may show on the next power-up error 701:0100 or 702:0100.

CAUTION ONLY SELECT ITEMS DETAILED IN THE FOLLOWING MENUS, INCORRECT

SELECTIONS CAN CAUSE CHANGES TO SAFETY LIMITS AND THE CALIBRATION DATA OF THE SYSTEM.

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Chapter 5. TESTING AND FAULT FINDING

To vent the pressure:

a. Remove the source of pressure and vent Ps and Pt to atmosphere (caps off).

b. Re-power the ADTS 405. During the power-up screen:

DRUCK

ADTS 405

DK415

VER.xx

c. Press F1 and F4 simultaneously. The ADTS 405 enters maintenance mode.

Note: The system may prompt for a PIN. This is not the CONFIG PIN but the Calibration PIN. If this Calibration PIN is enabled and not entered, the system will not execute the following procedure.

CAUTION ONLY SELECT ITEMS DETAILED IN THE FOLLOWING MENUS, INCORRECT

SELECTIONS CAN CAUSE CHANGES TO SAFETY LIMITS AND THE CALIBRATION DATA OF THE SYSTEM.

d. In maintenance mode with the following screen display:

(MAINTENANCE) F1 Data Block F2 Supervisor EEPROM F3 More

e. Select F3. The display shows:

(MAINTENANCE) F1 System F2 Hardware F3 Error log

f. Select F3. The display shows:

(MAINTENANCE) F1 Vent System F2 Set System Ready F3 View Temperature

g. Select F1 and when complete, press CLEAR/QUIT three times to reset the system.

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Further Testing

5.6 Further Testing

Perform the following tests if a pneumatic leak or a controller instability is suspected.

5.6.1 Environmental and preliminary operations

Do the tests in a room with a stable temperature environment and within the operating temperature range. The room must be free from drafts. Read the whole of the test procedure before commencement.

Note: The unit must be thermally stable; switch on and leave the unit for at least one hour to achieve thermal stability.

Change the units to mbar as follows:

a. Press SETUP then select [UNITS]. b. Repeatedly select [NEXT] until the display shows “mbar”. c. Select [SAVE] and then press CLEAR/QUIT twice and the display now shows Ps and Pt in

units of mbar.

5.6.2 Pressure Leak check

This check confirms that the unit does not leak under positive pressure conditions:

a. Press LEAK MEASURE/CONTROL to enter control mode. The display shows “Aim” in place

of “Leak Measure”. b. Enter a Ps aim of 1016 mbar by pressing: ALT/Ps, 1, 0, 1, 6, ENTER. c. Enter a Qc aim of 272 mbar by pressing: SPEED/Qc, 2, 7, 2, ENTER. Wait for the aim values

to be achieved then wait for 1 min. d. Press LEAK MEASURE/CONTROL to return to Leak Measure mode. e. Press RATE TIMER and select [WAIT 05:00], [TIME 01:00]. Observe that the “Waiting” time

is shown on the display as it counts down, followed by the “Timing” time. f. At the end of the “Timing” period, the display shows the rate of change of Ps, Qc and Pt with

a “T” to indicate timed average. g. Check that the Ps, Qc and Pt rates are less than or equal to ±0.5 mbar/min. If the leak rate

is not achieved, allow further thermal stabilization time and re-test by pressing RATE

TIMER and selecting [WAIT 05:00], [TIME 01:00]. h. Press CLEAR/QUIT to exit rate display.

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Chapter 5. TESTING AND FAULT FINDING

5.6.3 Vacuum leak check

This check confirms that the unit does not leak under vacuum conditions:

a. Press LEAK MEASURE/CONTROL to enter control mode. The display shows “Aim” in place

of “Leak Measure”. b. Enter a Ps aim of 100 mbar by pressing: ALT/Ps, 1, 0, 0, ENTER c. Enter a Qc aim of 0 mbar by pressing: SPEED/Qc, 0, ENTER d. Wait the required time for temperature stabilization e.g, one minute. e. Press LEAK MEASURE/CONTROL return to Leak Measure mode. f. Press RATE TIMER and select [WAIT 05:00], [TIME 01:00]. Observe that the “Waiting” time

is shown on the display as it counts down, followed by the “Timing” time. g. At the end of the “Timing” period, press ROC/Ps RATE to display the measured rate of

change of Ps (“T” is shown after the value indicating a timed average). h. Check that the Ps, Qc and Pt rates are less than or equal to ±0.5 mbar/min. If the leak rate

is not achieved, allow further thermal stabilization time and re-test by pressing RATE

TIMER and selecting [WAIT 05:00], [TIME 01:00]. i. Press CLEAR/QUIT to exit special rate time display.

5.6.4 Range Check

Using key presses based on the pressure and vacuum leak checks, control the Ps and Qc pressures to the normal limits of operation and make sure that these are achieved. Use minimum Ps and zero Qc and then maximum Ps and maximum Qc.

Note: Do not exceed the maximum Pt as shown on the front panel of the unit. Use maximum available rates of change to minimise test times.

5.6.5 Controller Stability

This check confirms the control stability:

a. Press LEAK MEASURE/CONTROL to turn the pressure controllers on. “Aim” replaces

“Leak Measure” on the display. b. Enter a Ps aim of 510 mbar with a rate of change of 204 mbar/min. by pressing the

following:

ALT/Ps, 5, 1, 0, ENTER, ROC Ps RATE, 2, 0, 4, ENTER c. Enter a Qc aim of 0 mbar with a rate of change of 204 mbar/min. by pressing the following:

SPEED/Qc, 0, ENTER, RATE, 2, 0, 4, ENTER d. Press Ps and wait for the aim values to be achieved. e. If auto-zero is enabled, wait for an auto-zero to take place.

Note: During auto zero, the valve state changes on the mimic panel and the display shows “Zero” in place of the airspeed aim value. The time to auto-zero should be less than 1 minute from achieving the aim value.

f. Wait for a minimum of 20 seconds after auto-zero before proceeding. g. Observe the measured values of Ps and Qc on the display for 1 min. h. Check that the displayed value of Ps remains within ±0.068 mbar. i. Check that the displayed value of Qc remains within ±0.068 mbar.

Note: If a further auto zero takes place, allow the display to stabilize following the auto zero before proceeding.

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Further Testing

5.6.6 Testing of Standard and Optional External Communication Ports

The following tests should only be done if the serviceability of an option facility is suspected or when an error occurs.

• USB ‘A’ Port This port is for future function expansion only. Current use is for service purposes only.

• USB ‘B’ Port This port is for future function expansion only. Current use is for service purposes only.

• RS232 Port This port is for future function expansion only. Current use is for service purposes only.

Note: There are no operator accessible functions on any of the USB ports.

• Ethernet Port

This port provides password controlled access to various sections of the internal ADTS filing system. Areas available and relevant to operator activities are:

1. The “Printed” records archive (see section 6.2.14 for Print key functions).

2. The Test Programs archive (see section 6.2.15 for ETP key functions).

Remove communications port cover plate after loosening the eight captive retaining

IEEE 488

RS232

Detail of communications connectors

Figure 5-2: External Communications

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Chapter 5. TESTING AND FAULT FINDING

5.6.7 Testing of IEEE 488 Facility

The IEEE 488 facility requires specialist knowledge of both IEEE 488 communications and test programming for specified, authorized test procedures. Only qualified personnel should use this facility, the test procedure must be authorized by the appropriate engineering authority.

If the display does not show that SCPI is selected follow the procedure in Section 3.7.3 Connection of the IEEE 488 Facility then carry out the following procedure:

a. Press [SCPI]. b. Press CLEAR/QUIT, [DEVICE ADDRESS]. c. Check the address displayed is 1. d. If not, press 1 on the numeric key-pad and then ENTER. e. If any changes have been made, press CLEAR/QUIT until requested to accept the changes,

then press ENTER.

f. The ADTS 405 automatically restarts, when the display shows the main pressure display

perform the test detailed in 5.6.7.1 Programming a Test of the IEEE 488 Facility.

5.6.7.1 Programming a Test of the IEEE 488 Facility

There are many different programs and items of equipment for communicating over the IEEE 488 interface. In the following example, the user must be familiar with the IEEE 488 bus controller to be used.

The following example commands can be used to check for correct operation of the IEEE 488 interface. Initialize the bus controller as follows:

a. Set Address 1 as the talker listener address. b. Make sure that bus time-out periods are set sufficiently high (e.g, 5 seconds). c. Set the bus controller to send EOI with last byte and to expect EOI on last byte of received

data. d. Send interface clear (IEEE 488 command). e. Send “SOURCE:STATE OFF” (one space between STATE and OFF). f. Send “SOURCE:STATE?” g. Instruct device 1 to TALK and input the response string. The response string should be

“OFF”.

If the above test fails do the following:

i. Check the continuity of the IEEE 488 cable, if unserviceable, replace the cable. ii. Do steps a. to g. again.

If the test fails again, return the ADTS 405 to the repair depot.

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Further Testing

5.6.8 Testing the Altimeter Encoder Option

To enable and disable this Altimeter Encoder facility access the configuration menu. When enabled, this facility will be available from power-up of the ADTS 405 with the settings held in non-volatile memory.

If the altimeter encoder displays ENCODER ERROR then check the continuity of the altimeter encoder option cable. The, optional, 15-core cable is supplied for the AAU-32 encoder unit (see connection details in table 5-4 Optional cable (AAU-32 units)

a. If the cable is unserviceable, replace the cable. b. Repeat the procedure 3.8 Enabling the Altimeter Encoder Option.

If the test fails again, return the ADTS 405 to the authorised maintenance or repair centre.

Note: The D2 data line (turquoise cable) is not defined for the AAU-32, it is for above 62,000 ft and not connected.

Table 5-3: Optional cable (AAU-32 units)

Front panel

connector pin

No.

1 C4 LSB brown B 3 C2 red C 5 C1 orange D 7 B4 yellow E

9 B2 green F 11 B1 blue G 13 A4 violet H 22 A2 white J

2 A1 grey K

4 D4 black L

n/c D2 MSB turquoise* n/c

8 common (0V) signal pink A 10 common (0V) power yellow/red b +M 14 +24 V vibrator red/blue p 12 +24 V encoder green/red c

shell case/ground shell a + shell

Function

Cable colour AAU-32 connector

pins

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6. REFERENCE AND SPECIFICATION

6.1 Introduction

This section includes a full description of each key function including references to associated functions. The available keys are:

F1 - F4 ALT Ps SPEED Qc MACH Pt EPR ROC Ps RATE RATE TIMER HOLD RATE LEAK MEASURE/CONTROL GROUND PORT REMOTE PRINT EXECUTE TEST PROGRAM HELP SETUP

(nudge up) (nudge down)

0 to 9

- 000 CLEAR /QUIT ENTER . (decimal point)

Double key presses give:

ABORT (CLEAR + ENTER) CONFIGURATION (F1 + SETUP)

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6.2 Main Pressure Display

6.2.1 F1 - F4

These function keys or soft-keys are used to select choices from menus. The menu choices may be shown directly over the keys or displayed as a list. When a menu is displayed, press the appropriate function key to select the required choice. CLEAR /QUIT can be used to leave a menu without making a selection.

6.2.2 ALT/Ps

1. In aeronautical units (ft or m), this key selects an altitude display.

2. In pressure units (mbar, inHg etc.), this key selects a static pressure (Ps) display.

3. SETUP, [UNITS] can be used to change the units of display, if set-up mode is not switched off.

4. Before entering a new altitude or Ps aim, set the rate of change using the ROC/Ps RATE key.

5. In Control Mode (Aim display), enter a new altitude or Ps aim using the numeric keys. Use LEAK MEASURE/CONTROL to exchange between control and measure mode.

6.2.3 SPEED/Qc

1. In aeronautical units (kts, km/h), this key selects an airspeed (CAS or TAS) display. In pressure units (mbar, inHg etc.), this key selects dynamic pressure and the display shows (Qc).

2. The airspeed can be displayed and entered as either Calibrated Airspeed (CAS, Vc) or True Airspeed (TAS, Vt).

Note: For testing purposes, Calibrated Airspeed equates to Indicated Airspeed (IAS).

3. The Pt temperature value affects the calculation of TAS. The value of Pt temperature, normally measured by the aircraft temperature sensor, can be changed by SETUP, SPEED/ Qc, [Pt TEMPERATURE] only in full set-up mode.

4. Use SETUP, SPEED/Qc, [CAS/TAS] to select CAS or TAS.

5. CAS/TAS can be changed in full set-up mode.

6. If the altitude aim is changed, after the entry of CAS, the Mach and TAS aim values change while the CAS value remains unchanged*.

7. If the altitude aim is changed, after the entry of TAS or Mach, the CAS aim value changes while the TAS and Mach values remain unchanged*.

8. If the Ps aim is changed, after the entry of Qc, then the Pt aim value changes while the Qc remains unchanged*.

9. If the Ps aim is changed, after the entry of Pt, then the Qc aim value changes while the Pt remains unchanged*.

* The display shows = symbol next to the parameter that remains unchanged.

10. SETUP, [UNITS] can be used to change the units of display, if set-up mode is not switched off.

11. Before entering a new CAS or Qc aim, the rate of change should be set using the RATE key.

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12. In Control Mode (AIM display), a new CAS or Qc can be entered using the numeric keys. Use LEAK MEASURE/CONTROL to change between control and measure mode.

6.2.4 MACH/Pt

1. In aeronautical units (ft/kts or m/km/h), this key selects a Mach display.

2. In pressure units (mbar, inHg etc.), this selects a total pressure (Pt) display.

3. If the altitude aim is changed, after the entry of CAS, the Mach and TAS aim values change while the CAS value remains unchanged*. If the altitude aim is changed, after the entry of TAS or Mach, the CAS aim value changes while the TAS and Mach values remain unchanged*.

* The display shows = symbol next to the parameter that remains unchanged.

4. If the Ps aim is changed, after the entry of Qc, then the Pt aim value changes while the Qc remains unchanged*.

5. If the Ps aim is changed, after the entry of Pt, then the Qc aim value changes while the Pt remains unchanged*.

6. Before entering a new Mach or Pt aim, set the rate of change of speed using the SPEED/Qc key.

7. Press the RATE key.

8. In Control Mode (AIM display), a new Mach or Pt aim can be entered using the numeric keys, Use LEAK MEASURE/CONTROL to change between control and measure mode.

6.2.5 EPR

The ADTS 405 can be used to check EPR sensors and indicators.

1. Engine Pressure Ratio (EPR) is only available in pressure units (mbar, inHg etc.).

2. For EPR testing, use Ps as INLET pressure and EPR to set the ratio of OUTLET pressure (Pt) to INLET pressure.

3. Before entering a new EPR aim, the rate of change should be set using the RATE key.

4. In Control Mode (Aim display), a new EPR aim can be entered using the numeric keys. Use LEAK MEASURE/CONTROL to enter measure mode and make the appropriate Ps and Pt control state changes.

6.2.6 ROC/Ps RATE

1. In aeronautical units (ft or m), this key selects a Rate of Climb (ROC) or vertical speed display.

2. In pressure units (mbar, inHg etc.), this key selects a rate of change of Ps display.

3. SETUP, [UNITS] can be used to change the units, if set-up mode is not switched off.

4. In Control Mode (AIM display), a new ROC or Ps rate can be entered using the numeric keys. Use LEAK MEASURE/CONTROL to change between control and measure mode.

6.2.7 RATE TIMER

The RATE TIMER key starts an internal timer for one of three pre-defined times. On the completion of the time period, the average rate of change over the time period is displayed.

Each selected TIME period can have an associated WAIT period to allow pressures to settle before the timing starts. The WAIT period counts down to zero before the TIME period starts.

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To use the rate timer:

1. Press RATE TIMER.

2. Press F1, F2 or F3 to select the required WAIT and TIME periods. The main pressure displays shows the WAIT or TIME period counting down. After timing, the timed average value, identified by a T directly to the right of the value,

replaces the instantaneous rate value. In measure mode the display changes to show the timed rate of all associated parameters on the same screen. Pressing one of the set-point keys (e.g., ALT, ROC, SPEED etc.,) or CLEAR/QUIT exits from this screen.

3. At any time during rate timing or when a timed value is displayed, pressing the RATE TIMER key allows for either the restarting or canceling of the timing. When timing is canceled, the rate displays return to instantaneous values.

4. The timed average value remains until a new aim is entered. During this time, it is possible to view any parameter.

5. The WAIT and TIME periods can be changed using SETUP, RATE TIMER, providing SETUP lock is not enabled.

6.2.8 HOLD

When HOLD is pressed, a changing pressure is instantaneously held. Pressing HOLD again releases the pressure to continue to the aim value. The HOLD facility applies to both channels simultaneously. Two examples of how the HOLD facility can be used are shown below:

Example 1 - Airspeed switch test

a. Take the airspeed to a value just below the expected trip point. b. Enter a low rate of speed. c. Enter a new airspeed aim above the trip point. d. Immediately the switch trips, press HOLD. (see 6.2.8 HOLD for more details) e. Read the airspeed value - this is the trip value for increasing airspeed. f. Enter a new airspeed aim below the expected trip value. g. Immediately the switch trips, press HOLD. h. Read the airspeed value - this is the trip value for decreasing airspeed. i. Press HOLD again to release hold.

Example 2 - Start both Ps and Pt ramping to new aims simultaneously

For both channels to start moving to new aims at the same time, use the following sequence:

a. Press HOLD. b. Enter Ps channel aim. c. Enter Pt channel aim. d. Enter required rates. e. Press HOLD again to release hold. f. HOLD is automatically released when entering Measure Mode.

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6.2.9 RATE

1. In aeronautical units (kts, km/h), this key selects a rate of change of airspeed (Rate CAS) display. The following rates are available in aeronautical units:

Key-press sequence Rate of change display

SPEED, RATE Rate CAS *

MACH, RATE Rate MACH

* Rate CAS is displayed with the airspeed in either CAS or TAS.

2. In pressure units (mbar, inHg etc.), this key selects a rate of change of pressure (Rate Qc, Rate Pt or Rate EPR) display. The actual display depends on the parameter selected before pressing RATE. The following rates are available in pressure units:

Key-press sequence Rate of change display

Qc, RATE Rate Qc

Pt, RATE Rate Pt

EPR, RATE Rate EPR

3. If set-up mode is not switched off, SETUP, [UNITS] can be used to change the units of display.

4. A new rate aim can be entered using the numeric keys, if the unit is in Control Mode (Aim displayed). Use LEAK MEASURE/CONTROL, to change between Control and Measure mode.

5. If the automatic airspeed rate is selected (using SETUP, RATE) the airspeed rate is automatically adjusted to simultaneously achieve both altitude and airspeed aim values. This adjustment normally requires a reduction in the rate from the aim value; the rate does not exceed the aim value. When airspeed (not Qc) is automatically reduced, the display shows (A) after RATE CAS.

6.2.10 LEAK MEASURE/CONTROL

This key switches between MEASURE and CONTROL mode. The controllers are switched off in Measure mode, so it can be used to measure leaks in the aircraft system.

Note: The pneumatic supply pumps must be switched on before going to

CONTROL mode.

1. In Measure mode, the display shows “LEAK MEASURE”.

2. Press LEAK MEASURE/CONTROL to switch the controllers on.

3. The display briefly shows “REGAINING CONTROL” while the pressure controllers adjust to the system pressure. No significant pressure transients are produced when regaining control.

4. In “CONTROL” mode, the display shows “Aim” value.

5. Two safety systems are built-in to protect the aircraft systems during leak testing. These are Auto Leak recovery and Auto Limit recovery. Auto Leak recovery automatically regains control if the leak rate exceeds the currently set limits on either channel.

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Chapter 6. REFERENCE AND SPECIFICATION

6. Auto Leak recovery can be switched off using LEAK].

7. If negative airspeed or Qc occurs in measure mode, the zero valve automatically opens for a period of one second to balance the airspeed or Qc. This only applies when the minimum CAS (or Qc) limit is zero.

8. Auto Limit recovery automatically regains control if the pressure on either channel leaks outside of the selected limits, (except for negative airspeeds).

9. Auto Limit recovery can be switched off using LIMIT].

Note: Auto Limit and Auto Leak recovery functions require the pneumatic supply pump to be switched on.

SETUP, LEAK MEASURE/CONTROL, [AUTO

6.2.11 GROUND

1. This key enables a display of ground pressure or automatically controls the pressures in the aircraft system to local atmospheric pressure.

2. The local atmospheric pressure is recorded by the ADTS 405 during the power-up sequence.

3. When GROUND is pressed, a menu gives a choice of three ground functions

Note: Both channels (Ps and Pt)

must be set to Cntrl for go to ground.

6.2.12 [GO TO GROUND]

Note: The Go-to-Ground operates only in Control Mode.

1. Selecting [GO TO GROUND] automatically enters an altitude or static aim equivalent to local atmospheric pressure (QFE) and an airspeed or dynamic pressure aim of zero. The system pressures will then be controlled towards these aims, in the normal way, at the rates set by the ROC/Ps Rate and RATE keys. At any time when going-to-ground, a new rate of change can be entered, the ADTS 405 continues going-to-ground.

2. At any time during going-to-ground, a new value aim for ALT, CAS, TAS, Mach, Ps, Qc, Pt or EPR can be entered. This causes the procedure to stop and normal controlling operation to start.

3. When the airspeed is zero and the Ps channel pressure is close to ground, the QFE is remeasured to update the stored “ground” pressure value, the display shows the message “CHECKING GROUND”. The ADTS 405 then reconnects to the system under test and equalizes the pressures.

4. The display shows the message “Safe At Ground”; the ground and zero valves remain open so that the aircraft system permanently vents to atmosphere. No commands can be entered when these two messages are displayed.

5. Press CLEAR/QUIT to continue with normal operation. The ground and zero valves then automatically close.

6.2.13 [DISPLAY QFE]

1. When [DISPLAY QFE] is selected, the local atmospheric pressure recorded during the power-up sequence is displayed as QFE in the default units set in configuration.

2. Press CLEAR/QUIT to return to the normal user display.

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6.2.14 [DISPLAY QNH]

1. When [DISPLAY QNH] is selected, the local atmospheric pressure recorded during powerup is converted to the equivalent sea level pressure. The display shows QNH, in the default units set in configuration, together with the station (airfield) altitude.

2. The station (airfield) altitude can be changed in full set-up mode by using SETUP,

GROUND.

6.2.15 PORT

This function sets the port option, this changes the ADTS 405 from a single pitot-static output system to a multi-port system by using a Druck Line Switching Unit (LSU 100 Series). Refer to the option manual.

6.2.16 REMOTE

Enters Remote Mode; this mode allows an external IEEE 488 bus device to control the unit. In this mode the key-pad (except the Remote key) is disabled. If remote lock is disabled, pressing the remote key when the “REMOTE” message is not displayed forces the unit into remote mode as if the external device has taken control of the unit.

Note: This may change operator settings such as the current limit set. Refer to the option user manual for further details.

6.2.17 PRINT

The ADTS 405 contains a print facility to print the displayed readings together with up to nine user readings (e.g., Pilot, Copilot, Aux) to a text file stored within the ADTS internal file storage system which may be accessed and printed via PC.

Access to the stored 'Print' files area within the ADTS is gained via the Ethernet port, using a PC to create a secure file transfer connection. Details of how to set up an Ethernet connection are given in section 3.7.

1. This key causes a printout of the date and time followed by the measured value of the parameters. A prompt asks for the entry of a reading which can consist of any characters A to Z, 0 to 9. (decimal point) or - (minus), in any order. It can be used to enter the value from the unit or system under test or alternatively a test number. When no more entries are required, press CLEAR/QUIT.

2. To enter an alphabetic character (A to Z), press the [ALPHA] key and use theor (nudge keys) to change to the required character. To enter another alphabetic character, press the [ALPHA] key again. Press [BACK] to delete the last character.

3. Up to nine user readings can be entered sequentially. The display prompts for the next user reading each time one is entered. When no further readings are required, press CLEAR/ QUIT. Example print output:

04Mar00 09:47 Ps 700.00 mbar Qc 30.00 mbar Usr Rdg

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6.2.18 EXECUTE TEST PROGRAM

A test program can contain operator prompts to enter numeric values from instruments; test results can be stored in the ADTS 405 and later printed, by a suitable printer, using the serial output port or ethernet option.

6.2.18.1 Executing Test Programs (without auto run)

a. Press the EXECUTE TEST PROGRAM key. This displays the first of the available test

programs. The top line shows the file name and the second and third lines show the TITLE.

b. Use [NEXT] or [PREV] to step through the available programs until the required program is

displayed. Press [RUN] to select the program. The display shows a menu allowing the following selections: [F1] Run all tests: This starts the program from the beginning. [F2] Run specific tests: This allows execution to start with any one of the individual TESTS

contained within the test program. Use [NEXT], [PREV] and [SEL] as above.

c. Select [Run all tests]: The display returns to the normal user display. “TP”, in the bottom

right hand corner of the display, indicates execution of a test program. Various commands prompts the operator by displaying messages on screen such as: “Press the ETP key”. The “ETP” key is the general key for moving onto the next step.

Note: The CLEAR/QUIT key should only be used to terminate test program execution.

d. At the end of each test, the operator has a choice of continuing, exiting test program

execution or going to manual mode. In manual mode, any of the normal key-pad functions may be used.

e. When the manual testing is complete, press EXECUTE TEST PROGRAM and the test

program continues from where it left off. This feature may be disabled by including the KEYLOCK command in the test program. While in manual mode the display prompts “TPM”.

f. When a “go” command is executed, “GO” flashes in the lower right hand corner of the

screen. At this point the user should record any instrument readings or displayed leak rates, as required, before continuing by pressing EXECUTE TEST PROGRAM. F4 may be used to continue at a “go” command as an alternative to pressing EXECUTE TEST PROGRAM.

6.2.18.2 Loading Program Files

New program files may be prepared on a PC and transferred to the ADTS using the Ethernet port access procedure described in section 3.7.2.

6.2.18.3 Deleting program files

If a test program within an ADTS 405 is no-longer required, then it may be deleted. To delete a test program, proceed as follows:

a. Enter configuration (CONFIG) by pressing and holding F1 and pressing SETUP. b. At the first menu level of configuration, press the EXECUTE TEST PROGRAM key, then F2.

The display then shows the file name and title of the first file in the list. Use [NEXT] and

[PREV] to step through the files until the display shows the file to be deleted. c. Select [DEL] to delete the file, then press CLEAR/QUIT to quit from configuration. d. Select [YES] to confirm quit.

Note: If the deleted program is marked as “AUTO RUN” then an additional screen asks to confirm if the auto run status should be removed before deletion.

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6.2.18.4 Auto Running a Program

To run a program each time the ADTS 405 is switched on, the “Auto run” feature should be enabled. The enabled program starts, from the first line, after successful completion of the ADTS power-up sequence. To set-up the auto run feature, proceed as follows:

a. Enter configuration (CONFIG) by pressing and holding F1 and pressing SETUP. b. At the first menu level of configuration, press the EXECUTE TEST PROGRAM key, then F1.

The display shows the name of the current file to “Auto run” or “*NONE*” if auto run is not selected. To change this selection use the [NEXT] and [PREV] keys and when the correct file is displayed press [SEL].

c. To de-select auto run press [NONE].

6.2.19 HELP

The HELP key provides help on each key. The help message generally gives associated functions and ways of changing the use of each key. To get help on any of the keys on the key-pad:

a. Press HELP, then press the required key for information. Some help screens show a

flashing [MORE] over the F4 key, press F4 for further information.

b. Press CLEAR/QUIT to exit the help system.

6.2.20  or (Nudge Keys)

Change the current aim up or down by a small increment. This facility can be used to align a pointer of an instrument to a precise indicated value and compare this indicated value with the measured value. This facility may be used for pressure switch testing as follows:

a. Aim for a pressure just below the expected operating point. b. When the pressure is achieved, repeatedly press 1 until the switch operates. c. Record the pressure reading shown on the display. d. Repeat this procedure using the 5 until the switch returns to its original condition, refer to

section 3 for an example. Holding the nudge function automatically repeats the function.

e. Record the pressure reading shown on the display.

CAUTION Make sure the nudge increment is set to a suitable value before using the

nudge facility to change the aim value. See SETUP to change the value of increment for the nudge facility.

1. Holding down one of the keys automatically repeats the function.

2. The nudge value can be used for large increments e.g., 100 kts or 5000 ft to “step through” cardinal points on a test.

6.2.21 Number 0 to 9

Use these keys for numeric entry. All data entry is based on over-writing the existing value, when the first numeric key is pressed, the existing number is replaced by the key pressed.

a. Press ENTER to complete numeric entry. Press CLEAR/QUIT if a mistake is made during

numeric entry. At any time, the existing number may be recovered by pressing CLEAR/ QUIT.

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6.2.22 -000

This key performs two functions during numeric entry.

1. If it is the first numeric key pressed, it produces a minus sign for the entry of negative numbers.

2. If it is a subsequent key pressed during numeric entry it produces three zeros for fast entry of thousands

Example To enter -1000:

a. Press -000: (Display shows -) b. Press 1: (Display shows -1) c. Press -000: (Display shows -1000)

Note: When -000 is pressed during entry of an aircraft name for limits or in the Print facility, it always produces “-”.

6.2.23 CLEAR/QUIT

1. During numeric entry, CLEAR/QUIT removes the new number and restores the previously entered number. Once the ENTER key has been pressed, the old number cannot be restored.

2. When menus are displayed, CLEAR/QUIT exits the menu, generally to the previous display.

3. For those displays containing a [SAVE] option, changes made before pressing CLEAR/QUIT are ignored. For all other displays, changes are saved when CLEAR/QUIT is pressed.

4. When warning messages are displayed, pressing CLEAR/QUIT removes the message.

6.2.24 ENTER

The ENTER key completes numeric entry.

6.2.25 CLEAR + ENTER (ABORT)

Pressing CLEAR/QUIT and ENTER together, restarts the ADTS 405 from the power-up sequence. Output valves close immediately and open during the restart sequence. The restart sequence starts

with the display showing:

DRUCK

ADTS405

DK 415

Ver.xx

CAUTION The (ABORT) function should only be used as a last resort:

1. When a restart is required after the system has shutdown displaying an error message.

2. As an emergency measure with a serious problem concerning the aircraft or component under test.

3. After this restart sequence, the system vents, at a safe rate, both channels (pitot and static) to atmosphere during the power-up sequence.

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6.2.26 SETUP

Pressing the SETUP key causes the system to enter a set-up mode preset in the configuration mode. The following section describes the three functions of setup: Full, Minimum and Off. The full set-up allows access to all set-up functions. Minimum set-up allows access to some set-up functions, the off function prevents access to the set-up functions.

6.2.27 FULL SET-UP

Full set-up allows access to secondary functions that do not have an assigned key. Any parameter changed under set-up returns to the default settings on power-down.

The CONFIGuration mode may be used to change the default settings so that the ADTS 405 powers up in the required state. Most set-up parameters are also available under CONFIG. Additional parameters are only available under CONFIG.

1. Certain parameters in set-up can be locked in CONFIGuration mode preventing inadvertent changes such as aircraft limits at power-up with a particular set of limits that must not be changed. Attempting to change a locked parameter causes the display to show a warning message.

2. Pressing the SETUP key makes the set-up functions available. Pressing the function keys selects the set-up menus, using the appropriate function key selects the required menu choice. To set-up a parameter key, press SETUP then press the required parameter key. Each parameter key set-up provides settings to the normal user mode function of the key. Further menus are used under certain direct key set-up functions.

3. Once a setting has been changed in set-up, use CLEAR/QUIT to return to the preceding menu. After all required parameters have been changed, repeatedly press CLEAR/QUIT until the display shows the main pressure display.

4. The following section describes each set-up function. Intermediate menus are not described.

Note:

The Quick Reference Section of this manual provides details of the set-up menu and

function keys.

6.2.28 SETUP, [UNITS]

a. Use [NEXT] or [PREV] to step through the available units until the display shows the

required units.

b. Select [SAVE] and then press [QUIT] to make the selection. The available units are:

ft and kts (includes Mach)

ft and mph (includes Mach)

m and km/h (m/min) (includes Mach)

m and km/h (m/s) (includes Mach) psi

m and km/h (hm/min) (includes Mach) hPa

inH

O 4°C

O 20°C

O 60°F

mbar kPa

inHg

mmHg % full-scale

kg/cm

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6.2.29 SETUP, [LIMITS]

The ADTS 405 is preprogrammed with the manufacturer's STANDARD, CIVIL and MAX limit sets. Different sets of additional aircraft limits can be programmed using the CONFIG mode. SETUP, [LIMITS] allows the selection of the set of limits to be used, each set of limits is identified by its aircraft name.

1. Use [NEXT] or [PREV] to step through the aircraft names select [SEL] and press QUIT when the display shows the required name.

2. Use CONFIG, [LIMITS] to program the sets of limits. Each set of limits includes:

Max ALT Min Ps

Min ALT Max Qc

Max CAS Min Qc

Min CAS Max Rate Ps

Max Mach Max Rate Qc

Max ROC ARINC limits on or off

Max Rate CAS Altitude correction value

Max Ps

c. The set of limits used at power-up (default) can be selected using CONFIG, [LIMITS],

[DEFAULT AIRCRAFT]. The default aircraft settings can be locked using CONFIG, [LIMITS], [LOCK AIRCRAFT] so that the operator cannot change the limits.

d. If the selected set of limits result in the measured pressures being outside the limits, the

display shows the warning message “OUTSIDE LIMITS GO TO GROUND” the Ps and Pt channels should be taken to ground or to pressures within the new selected limits. This warning message is also displayed if the pressures measured directly after power-up are outside the limits used at power-up.

e. After selecting a set of limits, the altitude correction value can be changed using SETUP,

ALT. The maximum Mach limit can be changed or switched off using SETUP, MACH.

6.2.30 SETUP, [OSC]

The ADTS 405 has an oscillation facility that causes the pressure to oscillate about the aim value at a user defined frequency and amplitude.

a. Select oscillation channel Ps or Pt. b. Select [AMPL/FREQ] and enter the required amplitude and frequency. c. Select [START] to start oscillation. d. Select [STOP] to stop oscillation at the end of a half cycle. e. Select [FREEZE] to stop oscillation immediately.

GE Druck ADTS 405 R/F Mk2 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1. DESCRIPTION

1.1 Introduction

1.2 Operating Range and Performance

1.3 Operating Limits

2. INSTALLATION

2.1 List of Parts

2.2 Packaging for Storage or Transportation

2.3 Power Supply

2.3.1 405R Rack-mounted version

2.3.2 405F Flightline version

2.4 Positioning of the ADTS

2.4.1 405R Rack-mounted version

2.4.2 405F Flightline version

3. OPERATION

3.1 Preparation

3.2 Start-up

3.2.1 Connections

3.2.2 Power-up

3.2.3 Units of Measure

3.3 Operation quick reference

3.4 Operating modes

3.5 Operating Procedures

3.5.1 Control or Measure Parameter

3.5.2 Aim

3.5.3 Leak Measure

3.5.4 Aircraft system protection

3.5.5 Limit Checking

3.5.6 Changing Parameters

3.5.7 Engine Pressure Ratio (EPR)

3.6 Testing Aircraft Systems or UUT

3.6.1 Go To Ground and Shut-down

3.6.2 SETUP and CONFIGuration options

3.7 Communications panel options

3.7.1 Ethernet System

3.7.2 Access ADTS files

3.7.3 Connection of the IEEE 488 Facility

3.8 Enabling the Altimeter Encoder Option

4. MAINTENANCE

4.1 Introduction

4.2 Materials

4.3 Maintenance Tasks

4.4 Routine Maintenance

4.4.1 Servicing Procedures

4.4.2 Replacing the output connector o-ring

4.4.3 Fuse Replacement

4.5 Cable tests

5. TESTING AND FAULT FINDING

5.1 Introduction

5.2 Error messages

5.3 Standard Serviceability Test

5.3.1 Procedure

5.3.2 Fault Finding

5.4 Fault Diagnosis

5.5 Ventilating after Overpressure

5.6 Further Testing

5.6.1 Environmental and preliminary operations

5.6.2 Pressure Leak check

5.6.3 Vacuum leak check

5.6.4 Range Check

5.6.5 Controller Stability

5.6.6 Testing of Standard and Optional External Communication Ports

5.6.7 Testing of IEEE 488 Facility

5.6.8 Testing the Altimeter Encoder Option

6. REFERENCE AND SPECIFICATION

6.1 Introduction

6.2.1 F1 - F4

6.2.2 ALT/Ps

6.2.3 SPEED/Qc

6.2.4 MACH/Pt

6.2.5 EPR

6.2.6 ROC/Ps RATE

6.2.7 RATE TIMER

6.2.8 HOLD

6.2.9 RATE

6.2.10 LEAK MEASURE/CONTROL

6.2.11 GROUND