isurplus ADTS405 Air Data Test Systems User Manual

Contents hide

1 isurplus ADTS405 Air Data Test Systems

2 Introduction

8 Documents / Resources

8.1 References

isurplus ADTS405 Air Data Test Systems

Introduction

This technical manual provides operating instructions for the Air Data Test System compatible with the requirements of first line servicing.

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.
This publication contains operating and safety instructions that must be followed to make sure of safe operation and to maintain the equipment in a safe condition. The safety instructions are either warnings or cautions issued to protect the user and the equipment from injury or damage.

Use qualified* technicians and good engineering practice for all procedures in this publication.

Pressure

Do not apply pressure greater the maximum safe working pressure to the equipment.

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 authorised service agents or the manufacturer’s service departments.

Technical Advice

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

Druck ADTS 405 User Manual
This product meets the essential protection requirements of the relevant EEC

Symbols

This symbol, on the instrument, indicates that the user should refer to the user manual.
This symbol, on the instrument, indicates do not throw-away in domestic bin,
hazardous material, dispose correctly in accordance with local regulations.
This symbol, on the instrument, indicates d.c.

Glossary
Terminology
The terminology used in this manual is specific and individual interpretation must not be
introduced. The terms are defined as follows:
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.
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 make sure 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.
Make sure: To confirm that a proper condition exists; to find out with certainty.
Operate: Make sure that an item or system functions correctly as far as possible without
the use of test equipment or reference to measurement.
Power-up: To perform operations necessary to switch on a system ready for use.

Returned Goods Procedure
for Europe
Should the unit become unserviceable and require repair it can be returned to the Druck
Service Department.
Please contact our Service Department, 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
You must also tell us if the product has been in contact with anything hazardous or toxic and
the relevant COSH references and precautions to be taken when handling.
Important notice
Service by unauthorized sources will affect the warranty and may not guarantee further
performance.

Returned Material Procedure
for USA
Should the equipment become unserviceable it can be returned to the Druck Service
Department.
Please contact our Service Department, either by ‘phone, fax or e-mail to obtain a Returned
Material Authorization (RMA) 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
You must also tell us if the product has been in contact with anything hazardous or toxic and,
the relevant MSDS references and precautions to be taken when handling.
Important notice
Service by unauthorized sources will affect the warranty and may not guarantee further
performance.
Approved Service Agents
For the list of service centres visit our web site:
www.gesensing.com

ATEX Certified ADTS Hand Terminal
CONDITIONS OF USE
The ATEX certified ADTS hand terminal supplied with the ADTS 405 can be used in zone 2
hazardous areas in accordance with the ATEX certification document and schedule.
ATEX Certificate of Conformity
No. Baseefa05ATEX0192
BASEEFA being an Approved Certification Body, in accordance with Article 14 of the Council
Directive of the European Communities of 18th December, 1975 (76/117/EEC) certifies that
the apparatus has been found to comply with harmonised European Standards:
EN 60079-15: 2003
and has successfully met the examination and test requirements recorded in confidential
report number:
05(C)0154 (Baseefa) dated 12th October 2005
NOTE: Refer to pages 2/2 of the Certificate of conformity for electrical connection parameters.
Rated Voltage = 32Vdc.
Marking detail:
ADTS Hand Terminal
Baseefa05ATEX0192
II 3G IP54
Baseefa05ATEX0192 (EC type examination certificate number)
EEx nA nL IIC T4 (-25°C <Tamb <=55°C)
Druck, LE6 0FH, UK
6 – 32V
Power
3W Max
SPECIAL CONDITION OF USE
• The power supplies must be isolated when connecting the ADTS hand terminal in the
hazardous area.
• The ADTS hand terminal must not be disconnected when energized in the hazardous
area.
• The ADTS hand terminal is a non-serviceable component. If the ADTS hand terminal
becomes unserviceable it can only be replaced by another ATEX compliant hand
terminal.

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DRUCK ADTS 405 HAND TERMINAL ATEX COMPLIANT
ENERDGOIZNEODTIDNITSHCEONHNAEZACRTDWOHUESNAREA

Druck ADTS 405 Air Data Test Systems
User Manual K114

DRUCK ADTS 405 HAND TERMINAL ATEX COMPLIANT

Ps 1013. 25 mbar

Aim Pt

1013. 25< 3199. 91 mbar

Aim 3200. 00

ENERDGOIZNEODTIDNITSHCEONHNAEZACRTDWOHUESNAREA

DRUCK ADTS 405 HAND TERMINAL ATEX COMPLIANT
ENERDGOIZNEODTIDNITSHCEONHNAEZACRTDWOHUESNAREA

K114 Issue No. 9

Druck ADTS 405 User Manual

Introduction
This technical manual provides operating instructions for the Air Data Test System compatible with the requirements of first line servicing. 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.

This publication contains operating and safety instructions that must be followed to make sure of safe operation and to maintain the equipment in a safe condition. The
safety instructions are either warnings or cautions issued to protect the user and the
equipment from injury or damage.

Use qualified* technicians and good engineering practice for all procedures in this publication.
Pressure
Do not apply pressure greater the maximum safe working pressure to the equipment.

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 authorised service agents or the manufacturer’s service departments.
Technical Advice For technical advice contact the manufacturer or subsidiary.
* A qualified technician must have the necessary technical knowledge, documentation, special test equipment and tools to carry out the required work on this equipment.

This product meets the essential protection requirements of the relevant EEC directives. Further details of applied standards may be found in the product specification.

K114 Issue No. 9

ii Associated Publications

This lists the Druck manuals and publications referenced in this manual.
Maintenance Manual Air Data Test System ADTS 405
Calibration Manual Air Data Test System ADTS 405
IEEE 488 OPT 2 Manual Air Data Test System ADTS 405
SCPI IEEE 488 Manual Air Data Test System ADTS 405
User Manual Altimeter Encoder Option

User Manual ARINC 429 Option

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

A abs a.c. ALT ATEX CAS d.c. e.g. EOC EPR EPROM etc. Fig. ft g Hg Hz IAS i.e. IEEE 488 in kg LED m mA max mbar min mm mV No. N.m. Para. Ps psi Pt Qc QFE QNH ROC SCPI TAS TE V Vc Vt +ve -ve °C °F

Ampere Absolute Alternating current Altitude Equipment for Use in Potentially Explosive Atmosheres Calibrated airspeed Direct current For example End of conversion Engine pressure ratio Electrically programmable read only memory And so on Figure Foot Gauge Mercury Hertz Indicated airspeed That is Institute of Electrical and Electronic Engineers standard 488 data Inch Kilogram Light emitting diode Metre Milliampere Maximum Millibar Minute or minimum Millimetre Millivolts Number Newton metre Paragraph Static pressure Pounds per square inch Total pressure Differential pressure Ps-Pt Local atmospheric pressure Barometric pressure at sea level Rate of climb Standard commands for programmable instruments True airspeed Test equipment Volts Calibrated velocity True velocity Positive Negative Degrees Celsius Degrees Fahrenheit

K114 Issue No. 9

ix Glossary

Glossary

Terminology

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

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.

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 make sure 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.

Make sure: To confirm that a proper condition exists; to find out with certainty.

Operate:

Make sure that an item or system functions correctly as far as possible without the use of test equipment or reference to measurement.

Power-up: To perform operations necessary to switch on a system ready for use.

K114 Issue No. 9

Druck ADTS 405 User Manual

Power-down: To perform operations necessary to safely switch off a system after use.

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 required 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.

K114 Issue No. 9

xi
Returned Goods Procedure for Europe
Should the unit become unserviceable and require repair it can be returned to the Druck Service Department. Please contact our Service Department, 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
You must also tell us if the product has been in contact with anything hazardous or toxic and the relevant COSH references and precautions to be taken when handling.
Important notice
Service by unauthorized sources will affect the warranty and may not guarantee further performance.
K114 Issue No. 9

xii
Returned Material Procedure for USA
Should the equipment become unserviceable it can be returned to the Druck Service Department. Please contact our Service Department, either by ‘phone, fax or e-mail to obtain a Returned Material Authorization (RMA) 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
You must also tell us if the product has been in contact with anything hazardous or toxic and, the relevant MSDS references and precautions to be taken when handling.
Important notice
Service by unauthorized sources will affect the warranty and may not guarantee further performance.
Approved Service Agents
For the list of service centres visit our web site: www.gesensing.com
K114 Issue No. 9

xiii
ATEX Certified ADTS Hand Terminal
CONDITIONS OF USE The ATEX certified ADTS hand terminal supplied with the ADTS 405 can be used in zone 2 hazardous areas in accordance with the ATEX certification document and schedule.
ATEX Certificate of Conformity No. Baseefa05ATEX0192
BASEEFA being an Approved Certification Body, in accordance with Article 14 of the Council Directive of the European Communities of 18th December, 1975 (76/117/EEC) certifies that the apparatus has been found to comply with harmonised European Standards:
EN 60079-15: 2003
and has successfully met the examination and test requirements recorded in confidential report number:
05(C)0154 (Baseefa) dated 12th October 2005
NOTE: Refer to pages 2/2 of the Certificate of conformity for electrical connection parameters.
Rated Voltage = 32Vdc. Marking detail:
ADTS Hand Terminal Baseefa05ATEX0192
II 3G IP54 Baseefa05ATEX0192 (EC type examination certificate number)
EEx nA nL IIC T4 (-25°C <Tamb <=55°C) Druck, LE6 0FH, UK

6 – 32V

Power 3W Max

SPECIAL CONDITION OF USE
· The power supplies must be isolated when connecting the ADTS hand terminal in the hazardous area.
· The ADTS hand terminal must not be disconnected when energized in the hazardous area.
· The ADTS hand terminal is a non-serviceable component. If the ADTS hand terminal becomes unserviceable it can only be replaced by another ATEX compliant hand terminal.

K114 Issue No. 9

xiv
Pressure units and conversion factors

Pressure unit Factor (Pascals) Pressure unit Factor (Pascals)

bar

100000

lbf/ft2

47.8803

lbf/in2 (psi)

6894.76

inHg

3386.39

mH2O mbar kgf/cm2

9806.65 100 98066.5

inH2O [1] ftH2O [1] atm

249.089 2989.07 101325.0

kgf/m2

9.80665

pdl/ft2

1.48816

mmHg

133.322

dyn/cm2

0.1

cmHg

1333.22

hbar

10000000

mHg

133322.0

tonf/ft2 (UK)

107252.0

mm/H2O [1] cm/H2O [1] N/m2 hPa

9.80665 98.0665 1 100

tonf/in2 (UK) inH2O (USA) [2] ftH2O (USA) [2] kp/mm2

15444300 248.64135 2983.6983 9806650

kPa

1000

kp/cm2

98066.5

MPa

1000000

kp/m2

9.80665

torr

133.322

Table of pressure units and conversion factors

Unit Conversion To convert FROM pressure VALUE 1 in pressure UNITS 1
TO pressure VALUE 2 in pressure UNITS 2, calculate as follows:

VALUE 2

VALUE 1 x FACTOR 1

FACTOR 2

Note The conversion factor for pressure units referenced [1] are calculated for a water temperature of 4°C. Pressure units referenced [2] are calculated for a water temperature of 68°F these units are normally used in the USA.
K114 Issue No. 9

Description

1 – 1

1 DESCRIPTION
1.1 Introduction
There are two versions of the ADTS 405, a 19″, 6U high (10½”) rack-mounted unit and a flight line unit.

The ADTS 405 is a rack-mounted system and, with external pressure and vacuum supplies connected, provides measurement and control 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 pressure and vacuum measuring and control for on-aircraft sense and leak testing,
calibration accuracy checks and functional tests of air data instruments, components and
systems. The unit 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 an ATEX certified 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 unit can also be controlled remotely using the IEEE 488 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.

K114 Issue No. 9

1 – 2
DRUCK ADTS 405 HAND TERMINAL ATEX COMPLIANT
ENERDGOIZNEODTIDNITSHCEONHNAEZACRTDWOHUESNAREA

Druck ADTS 405 User Manual

Ps 1013. 25 mbar

Aim Pt

1013. 25< 3199. 91 mbar

Aim 3200. 00

FIGURE 1-1 ADTS 405 GENERAL VIEW

DRUCK ADTS 405 HAND TERMINAL ATEX COMPLIANT

ENERDGOIZNEODTIDNITSHCEONHNAEZACRTDWOHUESNAREA

K114 Issue No. 9

FIGURE 1-2 ADTS 405F GENERAL VIEW

Description

1 – 3

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.
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

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 mbar

Max Qc

1,700.00 mbar

1688.00 mbar

368.01 mbar

Max Mach

12.35

2.5

Max ROC

100,000 ft/min

9,000 ft/min

6,000 ft/min

Max Rate CAS

2,000 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

Alt Correction

0 ft

K114 Issue No. 9

1 – 4
1000 knot range operating limits

Druck ADTS 405 User Manual

Parameter
Min Alt Max Alt Min CAS Max CAS Min Ps Max Ps Min Qc Max Qc Max Mach Max ROC Max Rate CAS Max Rate Ps Max Rate Qc ARINC Limits ALT Correction

Max Limits
-3,000 ft 105,000 ft -100 kts 1,000 kts 3.0 mbar 1355.00 mbar -1,352.00 mbar 2,500.00 mbar 14.97 100,000 ft/min 2,000 kts/min 10,000.00 mbar/min 10,000.00 mbar/min OFF 0 ft

Standard limits
-3,000 ft 80,000 ft 0 kts 1,000 kts 27.615 mbar 1,128.029 mbar -16.303 mbar 2,490.50 mbar 5 15,000 ft/min 700 kts/min 200.00 mbar/min 200.00 mbar/min OFF 0 ft

Civil limits
-1,000 ft 50,000 ft 0 kts 450 kts 115.972 mbar 1050.406 mbar 0 mbar 368.01 mbar 1 6,000 ft/min 600 kts/min 100.00 mbar/min 100.00 mbar/min OFF 0 ft

K114 Issue No. 9

Installation

2 – 1

2 INSTALLATION
2.1 Packaging

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

Packaging List – ADTS 405F

Packaging List – ADTS 405

i) Flight line ADTS 405F ii) Accessory bag iii) Power supply cable iv) Hand terminal v) Hand terminal cable – 2 m vi) Hand terminal cable – 18 m vii) Output, hose, 2.5m, red, AN6 – open viii) Output, hose, 2.5m, blue, AN4 – open ix) User Manual (this publication) x) Spare fuses (2 off)

i) Rack ADTS 405 ii) Power supply cable iii) User Manual (this publication) iv) Output, hose, 2.5m, red, AN6 – open v) Output, hose, 2.5m, blue, AN4 – open vi) Input, hose, 2.5m, green, AN6 – open vii) Input, hose, 2.5m, yellow, AN4 – open viii) Spare fuses (2 off) ix) Plug, expansion port

2.2 Packaging for Storage or Transportation

To store the unit or to return the unit for calibration or repair carry out the following

procedures:

1. Pack the unit as detailed in the following procedure.

2. To return the unit for calibration or repair complete the return goods procedure as detailed in the preliminary pages.

K114 Issue No. 9

2 – 2

Druck ADTS 405 User Manual

Procedure
The unit should be at zero/ambient pressure. Disconnect the hose assemblies and stow in the shoulder bag.
Switch OFF and disconnect from the electrical power supply. Disconnect the power supply cable and the hand terminal cable. Disconnect the hand terminal cable from the hand terminal.
Stow the power supply cable, hand terminal cable and the hand terminal in the ADTS 405F lid. For ADTS 405 rack units these items should be placed in a sealed polythene bag.
Fit the lid to the unit.
If available, use the original packing material. When using packing materials other than the original, proceed as follows.
Wrap unit in polyethylene sheeting.
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.
Protect all sides with shock-absorbing material to prevent equipment movement within the container.
Seal carton with approved sealing tape.
Mark carton “FRAGILE” on all sides, top, and bottom of shipping container.
Environment
The following conditions apply for both shipping and storage: Temperature Range -40° to +70°C (-40° to +158°F) Altitude ……………………. Up to 15,000 feet (4,570 metres)

K114 Issue No. 9

Installation

2 – 3

DRUCK ADTS 405 HAND TERMINAL ATEX COMPLIANT

4
2m 5
18m 6

ENERDGOIZNEODTIDNITSHCEONHNAEZACRTDWOHUESNAREA
8 9
11a

13
2

10 12

FIGURE 2.1 EQUIPMENT AND PARTS

K114 Issue No. 9

2 – 4

Druck ADTS 405 User Manual

Part Number

1 ADTS405-1728-39-M0

2 ADTS405-1728-36-M0

3 ADTS405-1728-37-M1

4 ADTS405-1728-47-M0

5 ADTS405-1728-28-M0

6a ADTS405-1728-27-M0 6b* ADTS405-1728-29-M0 7* ADTS405-1729-52-M0

8 ADTS405-1729-61-M0

9 ADTS405-1729-62-M0

10 ADTS405-1728-34-M0
11a ADTS405-1728-35-M0 11b* ADTS405-1891-61-M0 12 ADTS405-1728-48-M0 13 ADTS405-1891-22-M0

Descript ion

Qty per Used On assy

Bag, Shoulder

ADTS 405F

Kit, Fuse/ O-Ring Hand terminal, ATEX certified Cable, AC Power, 5M (260V Open End) Cable, Hand terminal 2M Cable, Hand terminal 18M Cable, Hand terminal 30M (Option)

ADTS 405F

and

ADTS 405

ADTS 405F

and

ADTS 405

ADTS 405F

and

ADTS 405

ADTS 405F

and

ADTS 405

ADTS 405F

and

ADTS 405

Kit, hose adaptor (2 x 2.5M AN ST/Open)

ADTS 405F

and

ADTS 405

Hose, Static (Ps), red, ST/OPN, AN6 (Special options available)

ADTS 405F

and

ADTS 405

Hose, Pitot (Pt), blue, ST/OPN, AN4 (Special options available)

ADTS 405F

and

ADTS 405

Cable, ARINC (Circular Connector) (Open End)

ADTS 405F

(Option)

and

ADTS 405

Cable, Altimeter Encoder, 6M (Open End)

ADTS 405F

(Option)

and

Altimeter Encoder Cable, 6M (AAU-32 altimeters) ADTS 405

(Option)

Cable, DC Power, 5M (Option)

ADTS 405F

Plug, expansion port

ADTS 405

TABLE 2-1 PARTS LIST

K114 Issue No. 9

Installation

2 – 5

2.3 Electrical Connection
WARNINGS: 1 VOLTAGES IN EXCESS OF 30 VOLTS (RMS) AC OR 50VOLTS DC, IN CERTAIN CIRCUMSTANCES, CAN BE LETHAL. CARE MUST BE TAKEN WHEN WORKING ON LIVE, EXPOSED CONDUCTORS.
2 DO NOT DISCONNECT THE HAND TERMINAL WHEN ENERGIZED IN THE HAZARDOUS AREA.
Power Supply Connection
The unit must be connected to the correct electrical power supply as stated, adjacent to the power connector.

CAUTIONS: 1
2

THE SUPPLY MUST PROVIDE CONNECTION TO A PROTECTIVE GROUND TERMINAL. THE UNIT MUST, AT ALL TIMES, BE CONNECTED TO THE SUPPLY EARTH (GROUND).
THE POWER SUPPLY CABLE AND CONNECTOR MUST BE CORRECTLY RATED FOR THE POWER SUPPLY.

Note: The ADTS 405 is normally supplied with an approved power supply cable for use in the country of delivery. This can limit the maximum supply voltage that can be safely used. e.g. a NEMA 5-15P terminated cable, for use in the U.S.A., is approved for a maximum of 125 V ac; it must be replaced for a higher supply voltage.

European

U.S.

Function

Colour

Color

Brown

Black

Live

Blue

White

Neutral

Centre Green/Yellow Green

Protective Earth (Ground)

ADTS 405 rack mounted units Make sure that the power supply is off before connecting the power cable .

If required, connect the hand terminal to the connector using either the 2 metre or 18 metre cable.
Note: Connecting the hand terminal disables the front panel key-pad.
Fit the expansion port plug (item 13, Table 2-1) to the rear panel expansion port.
Note: For units used with the Druck PV 103 Pump Unit connect the expansion cable, supplied with the PV 103, to the expansion port.

K114 Issue No. 9

2 – 6

Druck ADTS 405 User Manual

Flight line units
Make sure that the power supply is off before connecting the power cable and hand terminal cable.

Note: The flight line version power cable supplies both the electronics and pump racks.

If required, connect the hand terminal to the connector on the front panel using either the 2 metre or 18 metre cable.

Note: Connecting the hand terminal disables the front panel key-pad.

The two fuses, located in the holders and mounted on the front panel, protect the Electronics Rack and the Pump Rack. The fuses are connected in the live supply circuit and are rated at:
5A anti-surge HBC 250V
An external earth (ground) cable may be connected to the stud on the front panel of the pump rack to ensure integrity of the earth (ground) connection.
DC Power Option
The DC power option (nominal 28 V DC), can be an alternative power supply using an additional connector. This is located on the rear of the rack (ADTS 405) or on the pump front panel (ADTS 405F) both have the same connector details.

European

Colour

U.S. Color

Function

Grey

Gray

+28V

White

0V Return

Protective Earth (Ground)

Protective Ground Protective Earth (Ground)

Note: The unit will not be damaged if AC power and DC power are connected at the same time.

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2.4 Pneumatic Pressure Connections
ADTS 405 rack-mounted unit
Static (Ps) ……………………………………………………………………………………………………………. AN-6 37° flare Pitot (Pt) ……………………………………………………………………………………………………………. AN-4 37° flare Pressure supply ……………………………………………………………………………………………………….. AN-4 37° flare Vacuum supply ………………………………………………………………………………………………………… AN-6 37° flare
Connect pressure and vacuum supplies to the rear panel PRESSURE and VACUUM connectors. The pressure supply should be clean, dry gas, nitrogen or air refer to the specification.
Connect the Unit Under Test (UUT) to either the front panel or optional rear panel Ps (static) and Pt (pitot) output connectors.
Note: Blanking caps must be fitted on unused front or rear outputs.

ADTS 405F flight line

Static (Ps) ……………………………………………………………………………………………………………. AN-6 37° flare

Pitot (Pt) ……………………………………………………………………………………………………………. AN-4 37° flare

Pressure supply ……………………………………………………………………………………………………….. AN-4 37° flare

Vacuum supply ………………………………………………………………………………………………………… AN-6 37° flare

Auxiliary vacuum supply ……………………………………………………………………………………….. AN-4 37° flare

In normal operation make sure that the correct blanking caps are fitted to the external connectors.

The external pressure and vacuum connections are used when an external pump unit supplies the pressure and vacuum. This may increase the maximum achievable rates
of change when connected to large volume systems.

The auxiliary vacuum, AUX VACUUM, can be used to supply the suction-type static adaptors and provides a nominal 100 mbar (3 inHg) absolute vacuum. When not in use, a blanking cap must be fitted.
Note: A leak of this blanking cap affects the performance of the ADTS 405F.

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Druck ADTS 405 User Manual

Single channel operation
For single pipe testing of airspeed indicators or similar, requiring only Pt (pitot), connect the UUT to Pt (pitot). The Ps (static) output must be left open to atmosphere (no blanking cap) to provide a reference pressure.

Note: The Pt ONLY mode of operation must be used in this configuration.
For single pipe testing of altimeters or similar, requiring only Ps (static), connect the UUT to Ps (static). The Pt (pitot) output should be left with a blanking cap fitted.

Note: The Ps ONLY mode of operation must be used in this configuration.
2.5 Positioning of the ADTS 405

It is important that the position of the ADTS 405 in relation to the components under test 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 components under
test. The Reference section contains details of altitude correction (SETUP, ALTITUDE).

WARNING:

OBSERVE THE APPROPRIATE SAFETY INSTRUCTIONS AND PROCEDURES DETAILED IN THE COMPONENT MAINTENANCE MANUALS.

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FIGURE 2-2 ADTS 405 ALTITUDE REFERENCE

Installation

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2.6 Positioning of the ADTS 405F
WARNING: DO NOT DISCONNECT THE ATEX CERTIFIED HAND TERMINAL WHEN ENERGIZED IN THE HAZARDOUS AREA. THIS CAN CAUSE AN EXPLOSION.
To operate safely, the ADTS 405F must be placed outside the user defined zone 2 hazardous area. Only the ATEX certified hand terminal may be used inside the defined zone 2 hazardous area (refer to section 6.5 for a definition).

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.

WARNING:

OBSERVE THE APPROPRIATE SAFETY INSTRUCTIONS AND PROCEDURES DETAILED IN THE AIRCRAFT MAINTENANCE MANUALS.

Corrected altitude = Altitude measurement – Altitude correction value

altitude correction value

reference level

inst

AIR DATA COMPUTER

reference level

STATIC PITOT

Zone 2 defined hazardous area

FIGURE 2-3 ADTS 405F ALTITUDE REFERENCE

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FIGURE 2-4 ADTS 405 GENERAL VIEW

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FIGURE 2-5 ADTS 405 REAR PANEL VIEW

2
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Cover plate for option connectors

Key-pad and display

Solenoid valve status indicator

System status indicator

Elapsed time indicator

Fan outlet cover

Druck ADTS 405 User Manual

DRUCK ADTS 405 HAND TERMINAL ATEX COMPLIANT

ENERDGOIZNEODTIDNITSHCEONHNAEZACRTDWOHUESNAREA

Hand terminal

Connector cable (2m or 18m)

DC and AC power
supply fuses

ARINC 429/ Altimeter encoder connector (optional)

Static output connector

Pitot output connector

Power supply switch

Altitude reference

Pump switch

Vacuum input connector

Calibration enable switch

DC power supply
connector (optional)
AC power supply
connector
Auxiliary Vacuum input connector Pressure input connector

FIGURE 2-6 ADTS 405F GENERAL VIEW

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3 OPERATION
3.1 Preparation
WARNING:
OBSERVE SAFETY PRECAUTIONS STATED IN LOCAL ORDERS AND THE AIRCRAFT OR EQUIPMENT SERVICING PROCEDURES.
Make sure the electrical and pneumatic connectors, electrical cables and pipes and positioning of the ADTS 405 comply with the instructions and requirements in Section 2 Installation.

Carry out the following before use: If necessary, carry out the maintenance task detailed in Section 4.

Make sure the air data test system power supply switch on the front panel is set to OFF. Connect the air data test system to the electrical supply, make sure the
supply includes a connection to a protective earth.

Inspect the pneumatic hoses for damage, ingress of dirt and moisture. Make sure the aircraft adaptors are serviceable.

Connect, to the air data test system, the hoses necessary for the test procedures to be carried out: red hose to the STATIC output (Ps), blue hose to the PITOT output (Pt).
Temporarily seal the free ends of the hoses.

Note: When connected, take care not to kink or stand on the hoses.

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.

Before use, the ADTS 405 should be tested, for first time users see section 3.4, for users requiring more operating detail see section 3.5.

This section contains a quick reference chart showing all the functions of the key-pad. Further quick reference charts show the set-up and configuration settings for each
key-pad function.

Review and become familiar with the whole procedure before starting the test process on an aircraft or component.

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Operation

3.2 Display Functions and Units of Measure

When operating in either pressure measuring or pressure controlling modes, the ADTS

405 can display the following information:

Aeronautical Functions

Display Abbreviation Displayed Units

(if applicable)

Altitude Calibrated and True Airspeed Mach Rate of Climb Rate of Airspeed Rate of Mach

ALT CAS, TAS MACH ROC Rt CAS, RtMCH

ft, m kts, km/h, mph ft/m, m/m, m/s, hm/m kts/m, km/h/m, mph/m Mach/m

Pressure Functions

Display Abbreviation Displayed Units

(if applicable)

Static (Absolute) Pitot (Absolute) Dynamic or Impact (Differential) Engine Pressure Ratio Rate of Ps Rate of Pt Rate of Qc Rate of EPR

Ps Pt Qc EPR Rt Ps Rt Pt Rt Qc Rt EPR

[P] [P] [P] [P] /m [P] /m [P] /m 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

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FIGURE 3-1 FRONT PANEL

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3.3 Quick Reference
The quick reference chart shows normal operation key functions. In the key/selection column the following applies:

ALT [NEXT] (SINGLE DOUBLE) (craft1 craft2…) data entry

– Key. – Item in menu (soft key). – Sequence of parameters selected by NEXT key. – Sequence of names selected by NEXT key. – Enter number from key-pad.

KEY-PAD FUNCTION

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

Key/selection
F1-F4

Function and comments
Function keys for menus

ALT Ps SPEED Qc MACH Pt EPR ROC Ps RATE RATE TIMER
F1 F2 F3 HOLD RATE LEAK MEASURE/CONTROL

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

GROUND [GO TO GROUND] [DISPLAY QFE] [DISPLAY QNH]

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

PORT

See Line Switching Unit User Manual

REMOTE

Switches (toggles) between remote and local operation

Prints current parameter values

[ALPHA]

Inserts alphabet character in user text

[BACK]

Deletes last character of user text

data entry

Numeric entry for user text

EXECUTE TEST PROGRAM

Execute down-loaded Test Programs

[NEXT]

Select next listed test program

[PREV]

Select previous listed test program

[RUN]

Execute selected test program

Execute all tests in the test program

Selects and executes a specific test program

HELP

Press HELP then other key for further information

SETUP

Temporary set-up – lost at power down

See QUICK REFERENCE –

SETUP or MINIMUM SETUP

SETUP + F1

Configuration – changes power-up defaults

See QUICK REFERENCE – CONFIG

Hold F1 while pressing SETUP – then enter PIN

(nudge up) (nudge down) 0-9 -000 CLEAR/QUIT ENTER CLEAR/QUIT + ENTER

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

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Operation

3.4 First Time Operators
The following sequences of operation should be used by first time operators and by operators that use the equipment occasionally. For regular users, familiar with the equipment, go to section 3.5. Set the power supply switch to OPERATE and the powerup routine starts.
(1) The display, on the front panel or hand-terminal, shows:

DK126 Iss 1.xx Display Power Up
Please Wait

(2) After a short time the display shows:
DRUCK ADTS 405
DK263 VER 6.xx
Note: Where x is the current issue number of the software.
(3) Last Calibration dd/mm/yy (dmy) RPT Transducer PLEASE WAIT

Note: Date format can be changed in configuration. For units fitted with the Solartron transducer, the display shows Solartron Transducer in place of RPT Transducer.
(4)
Self Test
PLEASE WAIT

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(5) The system opens the zero valves and after approximately 7 seconds the valves close and the routine continues with the display shows:
Measuring Ground Pressures

PLEASE WAIT

(6) The system opens the output valves and controls pressures at the original measured values.

Equalising System Pressures
(Valves May Pulse) PLEASE WAIT

(7) At switch on, check the hand-held terminal display.
Note: 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.

ALT

Leak Measure

WARMUP

Note: Wait 15 minutes, before continuing, to allow the system to get to thermal stability. The wait time can be reduced to 5 minutes if the system has been re-powered after a short time.
Operating modes The air data test system can now be set for a variety of functions and modes. In the
following, examples of measure mode, control mode, leak measure mode and go-toground show the key presses and selections required for each mode.

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Measure Mode

Operation

To select the measured parameter press:
STATIC
ALT

SPEED

PITOT
MACH

Measured value

Units of measurement

Measured parameter

Alt 10000

Leak Measure

“leak-measure” when measure mode selected

CAS

350

Leak Measure

Change display single, dual or triple press:

kts
Change units from aeronautical to pressure:

SETUP
[MORE] [CONTROL] [Ps Pt DUAL] [DISPLAYS/OPTIONS] [DISPLAY TYPE] [OPTIONS]

SETUP
[UNITS] [NEXT] [PREV] [SAVE]

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Control Mode

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Leak Measure Mode

Operation

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.

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Go to Ground

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Operation

3.5 Operation and Example Procedures
3.5.1 Checks Before Use
Inspection and Cleaning
Inspect the external of the ADTS 405, and its associated equipment, for damage, dirt, and the ingress of moisture. If necessary, use foam cleaner and a lint-free cloth to clean the external surfaces. Inspect the pressure outlet ports for ingress of dirt and moisture, clean if necessary with a lint-free cloth. 3.5.2 Operating Procedures
The procedures show the steps required to make sure the ADTS 405 is serviceable and the settings required to test an aircraft system or component. For further information refer to the quick reference charts, at the end of this section, and Section 6 – Reference and Specification.
In the following:
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).
Help System
The help information includes further details of the function and details associated functions, also see the Reference Section 6.
3.6 Power-up
Check the power indicator is illuminated and set the front panel power switch to OPERATE.
The display shows the following sequence: a. Display power-up screen. b. ADTS 405 power-up screen. c. Date of the last calibration and type of main transducer fitted. d. Self-test message. e. Measuring ground pressure message. f. Equalising system pressures message. g. Display shows Leak Measure mode and the number of parameters last selected in configuration.
The ADTS 405 always powers-up in Leak 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.
Note: The display at power-up can be changed, see CONFIGuration.

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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.
3.7 Control or Measure Parameter
To change the displayed parameter: Value parameters – Press the parameter key e.g., press SPEED/Qc to display airspeed.
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: Press each value parameter in turn. e.g., display altitude and airspeed together, press ALT/Ps then SPEED/Qc.

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: Press the parameter key followed by the associated rate key. e.g., display airspeed and rate of speed together, press SPEED/Qc then RATE.
See Rate set-up for display details.
Note: If ROC/Ps Rate is pressed, the display automatically shows ALT and ROC.

Aim

A new aim can be entered using the numeric keys. Each digit is displayed as it is pressed. The existing aim is replaced when the first digit of the new aim 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 1:

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

Note 2:

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

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Operation

3.8 Leak Testing the ADTS 405
It is important to check that the ADTS 405 and the connecting equipment does not leak. Before use a leak check should be carried out as follows:
Connect the pitot and static hoses (to front panel of ADTS 405F). Temporarily seal the free ends of the hoses.
Set the display to dual display, see 3.9.
Set the units to feet and knots, see 3.13.
Using the SETUP menu, choose the limits set for the aircraft or UUT, see 3.14. Press SETUP, [LIMITS], and [NEXT] repeatedly to select the limit set from those available. Press [SEL] to save and then press CLEAR/QUIT repeatedly until the main pressure screen shown below is displayed. Note: The numeric value of the parameters displayed change with each power-up sequence. The amount of change depends on local atmospheric pressure conditions at the time of power-up.

FIGURE 3-2 MAIN PRESSURE DISPLAY (LEAK MEASURE MODE) Press the LEAK MEASURE/CONTROL key to turn on the pressure controllers.

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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 press the following keys:
SPEED/Qc then RATE to select rate of change of speed. 6, 0, 0, ENTER to set the rate. SPEED/Qc to select airspeed. 3, 0, 0, ENTER to set an airspeed of 300 kts (airspeed [CAS] now starts increasing). ROC/Ps Rate to select rate of climb. 6, 0, 0, 0, ENTER to set the rate of climb. ALT/Ps to select the altitude. 5, 0, 0, 0, ENTER to set altitude (altitude [Alt] now starts increasing). 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.

FIGURE 3-3 MAIN PRESSURE DISPLAY (CONTROL MODE) K114 Issue No. 9

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Operation

Leak Measure
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.
Press LEAK MEASURE/CONTROL to return to Leak Measure mode.
Press RATE TIMER, F3 – [Wait 05:00, Time 01:00]. Note: Different wait and time periods can be selected by pressing F1 or F2.
Wait until rate timer has completed and the results displayed. Check rate of climb is less than ±100 ft/min and rate of airspeed (CAS) is less
than ±1 kt.
Press LEAK MEASURE/CONTROL to return to Control mode. Press GROUND, F1, [Go to Ground]. Wait until for the display shows Safe At Ground.
After a successful leak test, the ADTS 405 is now ready to be connected to an aircraft system or unit under test.
After an unsuccessful, first-time leak test, leave the system to achieve thermal stability for a further five minutes, press CLEAR/QUIT and repeat the leak test. If the leak test is now successful, the ADTS 405 is now ready to be connected to an aircraft system or unit under test.
After another unsuccessful leak test, 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. Press CLEAR/QUIT and repeat the leak test procedure.
After a successful leak test without hoses connected, replace or repair the faulty hose(s) and retest. If the ADTS 405 fails the leak test without hoses connected, switch off and return the unit to the repair depot.

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3.9 Displays (Fig 3.4, Fig 3.5 and Fig 3.6)
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). 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.
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 options.

FIGURE 3-4 SINGLE DISPLAY

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Operation

FIGURE 3-5 DUAL DISPLAY

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FIGURE 3-6 TRIPLE DISPLAY

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3.10 Rate Timer Displays (Fig 3.7 and Fig 3.8)
When in Leak Measure mode and, after completing a rate timing, the system generates the rate timer displays. These displays do not depend on the display mode (single, dual, triple or option). Pressing a parameter key (ALT, ROC, etc.,) or CLEAR/QUIT exits the rate timer displays.

FIGURE 3-7 RATE TIMER DISPLAY AERONAUTICAL UNITS
3

Note:

FIGURE 3-8 RATE TIMER DISPLAY PRESSURE UNITS There is no pointer for the primary parameter, values cannot be entered in the rate timer displays.
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Operation

3.11 Pt Only Display (Fig 3.8)
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.

FIGURE 3-9 PT ONLY DISPLAY
3.12 Changing the Display
The display can show either one, two or three parameters as follows: Note: Display cannot be changed with SETUP switched off or in minimum mode.
To change the display: Press SETUP. Select [MORE]. Select [DISPLAYS/OPTIONS]. Select [DISPLAY TYPE]. Using [NEXT] or [PREV]. Select either SINGLE, DUAL or TRIPLE, ARINC, ENCODER (more display types with options fitted). Press [SAVE] to accept. Press CLEAR/QUIT repeatedly to return to user display.
To change the display for Pt Only: Press SETUP. Select [MORE]. Select [Control], [Ps Pt Dual]. Select [Pt Only Mode]. Press CLEAR/QUIT repeatedly to return to user display.
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3.13 Changing the Units
The units can be changed to units of pressure measurement or aeronautical units.
In Full Set-up Mode any set of aeronautical or pressure units can be selected.
To change the units: Press the SETUP key. Select [UNITS]. Use [NEXT] and [PREV] keys to select the required units. Select [SAVE] to accept. 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.

To change the unit type: Press the SETUP key. Select [UNITS TYPE]. Select either [AERO] or [PRESS] to select the unit type. Select [SAVE] to accept. Press CLEAR/QUIT repeatedly to return to the main pressure display.

Note: The default pressure and aeronautical units are defined in the CONFIGuration mode.
If Set-up Mode is switched off, units cannot be changed.

3.14 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’.

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Operation

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.

To select the limits in use:
Press SETUP. Select [LIMITS]. 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). Select [SEL] to select the limits. Press QUIT/CLEAR to return to the pressure display.

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.

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 system
can be disabled.

If negative airspeed (or Qc) occurs in measure mode, the zero value 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.

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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:

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.

Mach Test and Constant Mach

To go to 0.8 Mach, enter Control Mode and proceed as follows: Press SPEED then RATE to select rate of change of airspeed. Enter required rate, e.g. 300 kts/min. Press MACH. Enter 0.8. Wait for the Mach to be achieved.

Note:

If the altitude changes the system automatically adjusts the airspeed to

keep the Mach value constant.

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:

Press SETUP then SPEED. Select [CAS/TAS].

Select [TAS].

Press QUIT/CLEAR repeatedly to exit set-up.

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 (Tt) is used in the calculation of TAS. To enter Tt:

Press SETUP.

Press SPEED.

Select [Pt TEMPERATURE].

Enter the temperature measured by the aircraft’s Pitot temperature sensor.

Press QUIT/CLEAR three times to return to user display.

Note: Pitot temperature can only be changed in Full Set-up mode.

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Operation

Airspeed Switch test The following example shows how an airspeed switch an be functionally checked.

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

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

Enter an Aim value below the operating limits of the switch (i.e., airspeed switch operating at 130 knots ±2 knots set 127 knots).

Press ENTER and observe the airspeed changing. Using the nudge facility, set to an appropriate step value, increase the Aim value.

Increase the Aim until the switch operates (contacts close) and record the value.

Change the Aim to above the airspeed operating range (i.e. 133 knots). Repeat the steps, 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. The above method can be used for the other
parameters:

Examples:

Altitude switch – low altitude warning

– landing gear configuration warning

– height lock

Mach switch

– Speed brake scheduling

– Mach cruise lock

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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 must be showing pressure units e.g., mbar or inHg.

To change units in FULL SETUP Mode: PressSETUP. Select [UNITS]. Select required pressure units for display using [NEXT], [PREV] and [SAVE]. Use CLEAR/QUIT to return to pressure display.
To change units in MINIMUM SETUP Mode: Press SETUP. Select [UNITS TYPE]. Select [PRESS]. Use CLEAR/QUIT to return to the main pressure display. Pressure units cannot be selected when set-up mode is switched off.
To enter an EPR of 1.8 with inlet pressure of 500 mbar (15 inHg), proceed as follows:

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

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

Press ROC/Ps RATE to select rate of change of static.

Enter required rate of change e.g., 1000 mbar/min, (30 inHg/min).

Press EPR then RATE to select EPR rate.

Enter required value e.g., 5 EPR/min and press ENTER.

Press ALT/Ps.

Enter 500 mbar (15 inHg) and press ENTER.

Press EPR.

Enter 1.8 and press ENTER.

An EPR of 1.8 will quickly be achieved.

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

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Operation

3.15 Testing Aircraft Systems or UUT
WARNING: OBSERVE THE APPROPRIATE SAFETY INSTRUCTIONS AND PROCEDURES DETAILED IN THE AIRCRAFT MAINTENANCE MANUALS OR COMPONENT MAINTENANCE MANUALS.
Connect the hoses and appropriate adaptors to the aircraft system or UUT.
To make sure that the connections to the aircraft system or UUT are not leaking carry out a leak test detailed in the appropriate aircraft or component manual.
3.15.1 Go To Ground and Shut-down
On completion 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.
If the display shows “Leak Measure”, press LEAK MEASURE/CONTROL. Press GROUND, F1, [Go To Ground]. Wait for the display to show “Safe At Ground”. 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.
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.
To change from going to ground, enter a new altitude (static) or airspeed (Qc) set-point. 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.
Press CLEAR/QUIT to continue with normal operation. The ground vent and zero valves automatically close.

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3.16 Options
WARNINGS:
1. COMPLY WITH ALL LOCAL SAFETY ORDERS.
2. OBSERVE ALL SAFETY PROCEDURES IN THE AIRCRAFT MAINTENANCE MANUALS.
SCPI IEEE 488 Option
The SCPI IEEE 488 interface provides remote control of the ADTS 405 from a suitable PC, using standardised commands. The ADTS 405 implements the full SCPI command set with the exception of expressions and units suffixes. Although all the ADTS 405 commands at the first, or root, level are fully defined in the SCPI standard, many of the functions required have not been allowed for in the standard. The lower levels of commands have been created using the appropriate rules contained within the standard. Druck publication K157 SCPI User Manual provides details of command codes, command syntax and examples of programming. Section 5 of this manual details a test procedure for the option.

Altimeter Encoder Option

The Altimeter Encoder Option allows the output from encoder altimeters to be displayed on either the hand terminal or display and key-pad of the unit. The displayed data includes the bit pattern and the equivalent altitude decoded from the bit pattern. The unit supplies 24 VDC to power the altimeter encoder electronics circuit and the altimeter vibrator circuit.

Druck publication K170 Altimeter Encoder Option User Manual provides details of displayed and encoded data. Section 5 of this manual details a test procedure for the

option.

ARINC 429 Option
The ARINC 429 Interface provides the ADTS 405 with the ability to continuously transmit all internal aeronautical and pressure measurement parameters. Through an appropriate connector, the ADTS 405 can transmit the measurement parameters to the aircraft systems. The ADTS 405 can also monitor the aircraft ARINC 429 bus and display the measurement data on the hand terminal or the front panel display. The labels used for transmitting and receiving each parameter conform to the standard 429 specification.
Druck publication K185 ARINC 429 Option User Manual provides details of parameters and data output. Section 5 of this manual details a test procedure for the option.

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Operation

3.17 SETUP and CONFIGuration
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 customised. 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.
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.
Note: Access to the CONFIGuration mode may be protected by a PIN.
3.18 Quick Reference
The quick reference charts show full set-up, minimum set-up and configuration functions. In the key/selection column the following applies:

ALT [NEXT] (SINGLE DOUBLE) (craft1 craft2…) data entry

– Key. – Item in menu (soft key). – Sequence of parameters selected by NEXT key. – Sequence of names selected by NEXT key. – Enter number from key-pad.

The display shows the main pressure display (Leak Measure or Control mode).
Set-up example Press SETUP and the display shows:
Pressing a function key (F1 to F4) enters the set-up menu.
When in set-up, pressing a key (ALT Ps in this example) enters a menu or setting that applies to the parameter.

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FULL SET-UP
Key/selection
SETUP [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] [OPTIONS] [CLOSE O/P VALVES] [OPEN O/P VALVES] [SYSTEM SELF TEST] SETUP + KEY PRESS
ALT data entry
SPEED [AUTO ZERO] [ON] [OFF] [CAS/TAS] [CAS] [TAS] [Pt TEMPERATURE] data entry
MACH [DEFAULT] [OFF] [ON] data entry
¾ SETUP contd…

Function and comments
Full or minimum set-up selected in configuration. Select units Step through available units Step back through available units Select displayed units Select set of limits (aircraft 1aircraft 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 (SINGLEDUALTRIPLEENCODERARINC429) As NEXT, reverse order Save displayed Display Type See option manual Close output valves Open output valves Start self test
Altitude correction value
Auto zero function
Calibrated or true airspeed
Temperature for true airspeed Enter Pitot temperature Mach limit Defined by current limits Removes Mach limit Enables Mach limit Enter new Mach limit

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FULL SET-UP (contd.)
Key/selection
SETUP contd… RATE TIME
[WAIT/TIME ON F1] [TIME] [WAIT] data entry data entry
[WAIT TIME F2] [WAIT TIME F3] RATE
[ON] [OFF] LEAK MEASURE [AUTO LEAK] [ON] [OFF] [AUTO LIMIT] [ON] [OFF] GROUND data entry
PORT
REMOTE
PRINT [DATE/TIME] [DATE] data entry [TIME] data entry
HELP
(Nudge UP) [NEXT] data entry [PREV] data entry (Nudge DOWN )

Operation
Function and comments
Set-up WAIT and TIME time periods For F1 Change to TIME Change to WAIT of TIME time of WAIT time See [Wait/Time on F1] See [Wait/Time on F1] Automatic airspeed rate Automatic Manual
Auto leak recovery on or off
Auto limit recovery on or off
Airfield altitude for QNH display
See Line Switching Unit User Manual Remote mode lock, see configuration
Adjust date and time Enter Date Enter Time Help on SETUP
Enter nudge values (ALT CAS / TAS MACH ROC RATE RATE CAS) Aeronautical units or (Ps Pt Qc EPR RATE Ps RATE Qc RATE EPR) Pressure units As NEXT, in reverse order Required nudge increment As Nudge UP

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MINIMUM SET-UP
Key/selection
SETUP [UNITS TYPE] [AERO] [PRESS] [LIMITS] [NEXT] [PREV] [SEL] ALT data entry
PORT
HELP
EXECUTE TEST PROGRAM [PRINT/SAVE] [PRINT] [SAVE] [PRINT FILE] [NEXT] [PREV] [PRN]

Function and comments
Full or minimum set-up selected in configuration. Set units type Set units to default aeronautical units Set units to default pressure units
Select set of limits (aircraft 1aircraft 2 …) As NEXT, in reverse order Select displayed limit set
Altitude correction value
See option user manual
Help on set-up
Result file related print option Print/save mode selection Print generated result data Save generated result data to file Print result file option Select next result file Select previous result file Print selected result file

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Operation

CONFIGURATION Key/selection
SETUP + F1 [UNITS] [AERONAUTICAL] [NEXT] [PREV] [SAVE] [PRESSURE] [NEXT] [PREV] [SAVE] [TEMPERATURE] [C] [F] [LIMITS] [EDIT LIMITS] [EDIT EXISTING] [NEXT] [PREV] [SEL] [NEXT] [PREV] [ON/OFF] data entry [ALPHA] [BACK] [MAX LIMITS] [EDIT NEW] [CLEAR LIMITS] [NEXT] [PREV] [SEL] [YES] [NO] [LOCK AIRCRAFT] [ON] [OFF] [DEFAULT AIRCRAFT] [NEXT] [PREV] [SEL]

Function and comments
Hold F1 and press SETUP to enter CONFIG Default units Select default aeronautical units Step through available units Step back through available units Save selected units Select default pressure units Step through available units Step back through available units Save selected units Select default temperature units C F Configure sets of limits 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 CAS MIN Ps MAX Ps MIN Qc MAX Qc MAX RATE Ps MAX RATE Qc ARINC LIMITS ALTITUDE CORRECTION As NEXT in reverse order Switch (toggle) to ARINC 565 limits Limit value Insert alphabet character in name Nudge up select next letter in alphabet Nudge down select previous letter in alphabet Delete last character in name Create maximum limits called “MAX” Create new limits As for [EDIT EXISTING][SEL] above Clear an existing set of limits (aircraft 1 aircraft 2 …) As NEXT, in reverse order Clear selected limits Confirm 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

¾ SETUP + F1 contd…

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Key/selection
CONFIG (SETUP + F1) contd… [MORE] [CONTROL] [Ps Pt DUAL] [DISPLAY/OPTIONS] [DISPLAY TYPE] [NEXT] [PREV] [SAVE] [OPTIONS] [DATE FORMAT] [DMY] [MDY] [SETUP MODE] [OFF] [MIN] [FULL] CONFIG (SETUP + F1) + KEY PRESS
SPEED [AUTO ZERO] [ON] [OFF] [CAS/TAS] [CAS] [TAS] [Pt TEMPERATURE] data entry

Function and comments
Ps Pt DUAL control Ps single pipe testing of altimeters. Pt single pipe testing of airspeed and Mach indicators. DUAL normal combined system testing. Configure display type (SINGLEDUALTRIPLEENCODERARINC429) As NEXT, in reverse order Save selection See option manual Format of date text UK format DD/MM/YY US format MM/DD/YY Limits access to set-up functions
Auto zero function
Configure Calibrated or True airspeed
Configure Pt temperature

RATE TIME

Configure WAIT and TIME times

[WAIT/TIME ON F1]

For F1

[TIME]

Change to TIME

[WAIT]

Change to WAIT

data entry

TIME time period

data entry [WAIT/TIME ON F2]

WAIT time period See [Wait/Time on F1]

[WAIT/TIME ON F3]

See [Wait/Time on F1]

RATE [ON]

Automatic airspeed rate Automatic

[OFF]

Manual

LEAK MEASURE

[AUTO LEAK ON/OFF] [ON]

Auto leak recovery Lock

[OFF]

[AUTO LEAK LOCK] [ON]

Lock auto leak recovery Lock

[OFF]

[AUTO LIMIT ON/OFF]

Auto limit recovery state

[ON]

[OFF] [AUTO LIMIT LOCK]

Lock auto limit recovery state

[ON] [OFF]

CONFIG (SETUP + F1) + KEY PRESS contd…

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Operation

Key/selection

Function and comments

CONFIG (SETUP + F1) + KEY PRESS contd…
GROUND data entry

Airfield altitude for QNH display

PORT

Refer to option user manual

REMOTE

Remote mode lock

[ON] [OFF] ETP AUTO RUN
[NEXT] [PREV] [NONE] [SEL] ERASE PROGRAMS
[NEXT] [PREV] [DEL] RESULTS [PRINT/SAVE] [PRINT] [SAVE] [ERASE FILE] [NEXT] [PREV] [DEL] (nudge up) [NEXT] [PREV] data entry
(nudge down)
[000] data entry

Run test program on power up
Refer to option user manual
Delete test program
Print/Save mode selection Generated result data printed Generated result data saved in a file Result file delete option Select next result file Select previous result file Delete selected result file
(ALTCAS/TASMACHROCRATE CASPsPtQcEPRRATE PsRATE QcRATE EPR) As NEXT, in reverse order Required nudge increment As nudge up PIN protection PIN (code number to enter CONFIG) set to 0000 for “no code required”

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4 Maintenance
4.1 Introduction
This section details the maintenance tasks to be carried out by the operator. The maintenance chart shows the maintenance tasks, the periodicity of each task and a code referenced to the task detailed in 4.3.

Task Inspect Inspect
Test Test Calibrate Replace Clean Service
Service

Code A B C D E F G H
J

Period
Daily, before use.
Weekly
Before use. Daily, before use. Every 12 months * As detailed in fault finding or when detailed after inspection.
Weekly * 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.

TABLE 4-1 MAINTENANCE CHART

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Maintenance

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.

Item Number

Item Name, Description

1 Cloth, Cotton, Lint-Free

Alcohol, Isopropyl (MIL-A-10428, Grade A)

Detergent, Mild, Liquid

4 Brush, Soft-bristle (MIL-B-43871)

Note:

Equivalent substitutes can be used.

TABLE 4-2 MATERIALS LIST

(1) Ref Code

(2) Nomenclature

Voltmeter, Digital

Insulation Tester, 250V

(3) Manufacturer’s
part number Fluke series II, Type 77 H7291 Robin

Note:

Equivalent substitutes can be used.

TABLE 4-3 TOOL AND TEST EQUIPMENT REQUIREMENTS

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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. 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. 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. Check the date of the last calibration and, if necessary, refer to task E. Record any error messages and refer to Section 5.
D Daily and before use, carry out the SST detailed in Section 5.
E Normal calibration period 12 months. When calibration is due, the unit should be withdrawn from service and returned to depot or calibration facility. The date of calibration is stored in the unit and displayed in the power-up sequence and on a label on the front panel. Do not use a unit with out-of-date calibration. 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 item in table 2-1.
G Clean the unit every week. Clean the front panel with a damp lint-free cloth (item 1, Table 4-2) and mild liquid detergent (item 3, Table 4-2). Remove any stubborn dirt using isopropyl alcohol (item 2, Table 4-2) and allow to dry. Clean all pneumatic connectors with a soft brush (item 4, Table 4-2). Remove any stubborn dirt using isopropyl alcohol (item 2, Table 4-2) and allow to dry.
H Withdraw the unit from service and return to the repair depot. The intermediate service manual contains the 1,000 hour servicing procedure.
J Withdraw the unit from service and return to the repair depot. The intermediate service manual contains the 3,000 hour servicing procedure.

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Maintenance

4.4 Routine Maintenance WARNING: SWITCH OFF AND DISCONNECT THE POWER SUPPLY BEFORE STARTING ANY MAINTENANCE TASK.
Carrying out the maintenance tasks detailed 4.3.
Servicing Procedures The following procedures provide instructions to test and replace items for the operator. Return the unit to the intermediate service depot for further testing and replacement of items.
Replacing the output connector o-ring
After inspection as detailed in maintenance task B, carry out the following if the o-ring is worn or damaged:
Carefully remove the o-ring from the small groove at the top of the connector.
Fit a new o-ring in the small groove at the top of the connector.
Make sure the o-ring is tight in the groove and not damaged after fitting.

Note: Damage to this o-ring causes leaks.

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Cable tests Carry out the following check when detailed in Testing and Fault Finding, Section 5.
Measure continuity using the DVM (item 1, Table 4-3) set to an appropriate range.
Measure the continuity between corresponding 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. Measure insulation using the Insulation tester (item 2, Table 4-3), set to an appropriate range.
Measure the insulation resistance between the shell of the connector and all individual pins in turn.
Measure the insulation resistance between the shell of the appropriate connectors and all pins in turn.
Measure also the resistance between individual pairs of pins (i.e., 1-2, 1-3, 1-4, 1-5, 1-6, 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 Mohms.

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Maintenance

INTENTIONALLY LEFT BLANK

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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 selftest. 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 possible 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.
Error messages When the display shows a message indicating entry of incorrect data or values,
pressing QUIT clears the message and allows the correct entry to be made.

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Testing and Fault Finding

5.2 Standard Serviceability Test
The following procedure can be used to check the functions and facilities of the ADTS 405. For further information refer to Section 6 – Reference and Specification.
In the following: 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).
Procedure
Connection and power-on checks
Connect power to the unit and, if necessary, connect the hand terminal. Make sure that the blanking caps are fitted to the Ps and Pt front panel outputs. Check power indicator is on.
Set the front panel switch to OPERATE. Set the front panel switch for the pump unit to PUMP ON and check that the pump power indicator lights.
Check the display shows the first stage power-up message as below (where: x is the version number of the installed display driver software):

DK 282 Version x.xx Display Power up Please Wait
Check the second stage power-up message displays as below (where: x is the version number of the installed main operating software):
DRUCK ADTS 405
DK 263 VER 6.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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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.

Check that the display then changes to show measured altitude and airspeed (CAS or TAS) values.
NOTES
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.
Press the MACH key and check the display changes to show Altitude and Mach measured values.
Pump unit
Set the front panel switch for the pump unit to PUMP ON and check that the pump power indicator lights.

Press LEAK MEASURE/CONTROL to go to control mode. Enter an altitude aim of 5000 ft by pressing 5, 0, 0, 0, ENTER.

Enter rate or use default rates.

Enter an airspeed aim of 500 knots by pressing SPEED, 5, 0, 0, ENTER.

Check that these aim values are achieved.
Completion On successful completion of this test procedure, select GROUND, [Go to Ground] wait
until the unit is at ground, switch off and disconnect the power supply.

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Testing and Fault Finding

5.3 Self-Test Errors
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.

Paragraph 5.8 contains a table listing the error codes, check that the error code is complete and listed in the table before returning the unit to the repair depot.

5.4 Venting 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. The following procedure to vent this pressure enters the maintenance mode. Review and become familiar with the whole procedure before beginning the venting process:

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

CAUTION: 2.

ONLY SELECT ITEMS DETAILED IN THE FOLLOWING MENUS, INCORRECT SELECTIONS CAN CAUSE CHANGES TO SAFETY LIMITS AND THE CALIBRATION DATA OF THE SYSTEM.
Re-power the ADTS 405. During the power-up screen:

DRUCK ADTS 405
DK XXX VER XXX
3. Press F1 and F4 simultaneously. The ADTS 405 enters the maintenance mode with the following screen displays.
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.

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CAUTION: 4.

ONLY SELECT ITEMS DETAILED IN THE FOLLOWING MENUS, INCORRECT SELECTIONS CAN CAUSE CHANGES TO SAFETY LIMITS AND THE CALIBRATION DATA OF THE SYSTEM.
The system enters the maintenance mode with the following screen display:

(MAINTENANCE) F1 Data Block F2 Supervisor EEPROM F3 More

5. Select F3. The display shows:

(MAINTENANCE) F1 System F2 Hardware F3 Error log

6. Select F3. The display shows:

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

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

system.

5.5 Fault Diagnosis
If the display shows a warning or error message, refer to the above sections.

If a fault occurs, refer to the fault location chart, Figure 5-1 and Table 5-1 for possible fault causes and recommended action.

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Testing and Fault Finding

SET POWER SWITCH TO OPERATE

Power-up sequence

DK282 version xx.xx Display Power Up
Please Wait

SYSTEM STATUS RED

POWER

INDICATOR

FRONT PANEL

DISPLAY FITTED

FRONT PANEL

DISPLAY POWER-UP

MESSAGE

N HAND-TERMINAL FITTED ?Y

N HAND-TERMINAL
FITTED ? Y
STATUS LIGHT

GREEN OFF

FLASHING RED/
ORANGE

RED

F3 F9 F7

DRUCK ADTS 405
DK 263 Ver 6.xx
Last Calibration mm/dd/yy (mdy) RPT Transducer PLEASE WAIT
Self Test PLEASE WAIT
Measuring Ground Pressures
PLEASE WAIT

SYSTEM STATUS ORANGE
SYSTEM STATUS GREEN

N HAND-TERMINAL DISPLAY POWER-UP
MESSAGE ?
Y

STATUS LIGHT

GREEN

OFF

FLASHING RED/ORANGE

RED

POWNER-UP

MESSAGE

Y STATUS LIGHT

HAND-TERMINAL

BACKLIGHT ON

OFF

RED FLASHING

RED/ORANGE

FRONT PANEL

DISPLAY POWER-UP

F9 F2

MESSAGE

HAND-TERMINAL

FITTED

FROM NOW ON, IF ANY ERRORS OCCUR THE SYSTEM LOGS THE OCCURRENCE AND DISPLAYS AN ERROR MESSAGE REFER TO ERROR CODES FOR FAULT FINDING PROCEDURE

STATUS LIGHT

OFF

GREEN

RED

FLASHING RED/ORANGE

Equalising System Pressures
(Valves May Pulse) PLEASE WAIT

ALT 0

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

F10

POWER-UP SEQUENCE COMPLETED WITHOUT ERRORS. IF ANY FURTHER ERRORS OCCUR THE SYSTEM LOGS THE OCCURRENCE AND DISPLAYS AN ERROR MESSAGE

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FUNCTIONAL TESTING COMPLETE
FIGURE 5-1 FAULT FINDING CHART

Druck ADTS 405 User Manual

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TABLE 5-1 FAULT FINDING

Fault

Symptom

Probable cause

Action

Pump power-on indicator

Faulty power supply.

does not light.

Unserviceable fuse, AC/DC power supply Faulty power supply cable.

Check power supply. Check/replace power supply fuse or reset circuit protection device. Check/replace fuse (front panel). Replace cable and re-test.

AC or DC power indicator

AC or DC power supply cable to 405 rack.

Check/replace cables.

does not light.

405 rack AC input fuse.

Check/replace fuse.

PSU fault.

Record fault and return ADTS 405 to depot for repair.

Display power-up message Internal control computer fault.

appears and status light

remains red.

Record fault and return ADTS 405 to depot for repair.

No front panel display

Display fault.

power-up message, status

light green.

No hand-terminal display, Hand-terminal fault (cable OK).

status light green. Hand-

terminal back- light on.

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.

No hand-terminal display, Hand-terminal.

status light green. Handterminal back-light not on.

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

No front panel display DK127 message. Status

No front panel display detected. Internal fault.

light flashing red/orange.

Record fault and return ADTS 405 to depot for repair.

No hand-terminal or front panel display DK127

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

Remove hand-terminal and re-test.

message. Status light flashing red/orange.

Internal fault.

Status light off.

Internal PSU fault.

Record fault and return ADTS 405 to depot for repair.

F10

Status light steady orange. System fault.

Record fault and return ADTS 405 to depot for repair.

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Testing and Fault Finding

5.6 Further Testing
The following tests should only be carried out if a pneumatic leak or a controller instability is suspected.
Test Environment and Preliminary Operations These tests should be carried out in a room with a stable temperature environment
within the operating temperature range. The room must be free from drafts.
Review and become familiar with the whole of the test procedure before beginning the test procedure.
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:
(1) Press SETUP then select [UNITS]. Repeatedly select [NEXT] until the display shows “mbar”.
(2) Select [SAVE] and then press CLEAR/QUIT twice and the display now shows Ps and Pt in units of mbar.
Pressure Leak Check This section verifies that the unit is leak tight under positive pressure conditions.
(1) Press LEAK MEASURE/CONTROL to enter control mode. The display shows “Aim” in place of “Leak Measure”.
(2) Enter a Ps aim of 1016 mbar by pressing: ALT/Ps, 1, 0, 1, 6, ENTER.
(3) 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.
(4) Press LEAK MEASURE/CONTROL to return to Leak Measure mode.
(5) 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.
(6) 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.

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(7) 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].

(8) Press CLEAR/QUIT to exit rate display.

Vacuum Leak Check This section verifies that the unit is leak tight under vacuum conditions.

(1) Press LEAK MEASURE/CONTROL to enter control mode. The display shows “Aim” in place of “Leak Measure”.

(2) Enter a Ps aim of 100 mbar by pressing: ALT/Ps, 1, 0, 0, ENTER

(3) Enter a Qc aim of 0 mbar by pressing: SPEED/Qc, 0, ENTER

(4) Wait the required time for temperature stabilization e.g., one minute. Press LEAK MEASURE/CONTROL return to Leak Measure mode.

(5) 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.

(6) 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).

(8) Press CLEAR/QUIT to exit special rate time display.

Range check

Using key presses based on the above, 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.

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Testing and Fault Finding

Controller Stability This section verifies the control stability.
(1) Press LEAK MEASURE/CONTROL to turn the pressure controllers on. “Aim” replaces “Leak Measure” on the display.
(2) 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, Ps RATE, 2, 0, 4, ENTER.
(3) 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.
(4) Press Ps and wait for the aim values to be achieved.
(5) If auto-zero is enabled, wait for an auto-zero to take place. 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.
(6) Wait for a minimum of 20 seconds after auto-zero before proceeding.
(7) Observe the measured values of Ps and Qc on the display for 1 min.
(8) Check that the displayed value of Ps remains within ±0.068 mbar.
(9) 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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5.7 Testing an Option Facility
The following tests should only be carried out if the serviceability of an option facility is suspected or when an error occurs.

Testing the IEEE 488 Facility
This 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.

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 non-volatile memory.

Configuring and 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:

Press and hold down F1 then press SETUP to enter the configuration menu. Release both keys.
If requested, enter PIN details.
Press [MORE], [DISPLAY/OPTIONS], [OPTIONS], [IEEE-488], [SCPI/OPT2].
Check the display shows that SCPI is selected, if the settings are correct, press CLEAR/QUIT until the display shows the main pressure display, run the test program below.
If the display does not show that SCPI is selected, press [SCPI].

Press CLEAR/QUIT, [DEVICE ADDRESS].

Check the address displayed is 1.

If not, press 1 on the numeric key-pad and then ENTER.

If any changes have been made, press CLEAR/QUIT until requested to accept the changes, then press ENTER.

The ADTS 405 automatically restarts, when the display shows the main pressure display, carry out the following test program.

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Testing and Fault Finding

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:

Set Address 1 as the talker listener address.

Make sure that bus time-out periods are set sufficiently high (e.g., 5 seconds).

Set the bus controller to send EOI with last byte and to expect EOI on last byte of

received data.

Send interface clear (IEEE 488 command).

Send “SOURCE:STATE OFF” (one space between STATE and OFF).

Send “SOURCE:STATE?”

Instruct device 1 to TALK and input the response string.

The response string should be “OFF”.

(1) If the above procedure is unsuccessful, check the continuity of the IEEE 488 cable.

(2) If faulty, replace the cable.

(3) If the continuity of the cable is correct, return the ADTS 405 to the repair depot.

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Connection of the IEEE 488 Facility The front connector is behind the option connector cover plate.
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. The connector details are as follows:

Standard Connector Pin
Number

Function

Standard Connector Pin
Number

Function

DI01

D105

D102

D106

D103

D107

D104

D108

E0I

REN

DAV

Gnd [2]

NRFD

Gnd [2]

NDAC

Gnd [2]

IFC

Gnd [2]

SRQ

Gnd [2]

ATN

Gnd [2]

Shield [1]

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

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Testing and Fault Finding

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.
Configuring and enabling the Altimeter Encoder Option
Press and hold down F1 and press SETUP to enter the configuration menu. Release both keys.
Press [MORE], [DISPLAY/OPTIONS], [DISPLAY TYPE], [NEXT], [ENCODER]. Check the display shows “Encoder” is selected. Press [SAVE], then repeatedly press CLEAR/QUIT until the display shows the
following:

ADTS 405 mode

value

units of measurement

Alt

5000

Aim 5000

D2 to C4>00001010010

CODE 5000

decoded value

bit code

Note: With an incorrect bit combination such as all zeroes, the display shows “ENCODER ERROR” in the place of the decoded value.
If the above procedure is unsuccessful, check the continuity of the Altimeter Encoder cable.
If faulty, replace the cable.
If the continuity of the cable is correct, return the ADTS 405 to the repair depot.

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Optional cable (AAU-32 units)
The 15-core cable is supplied for the AAU-32 encoder unit: Note: The D2 data line (turquoise cable) is not defined for the AAU-32, it is for above 62,000 ft and not connected.

Front panel connector
pin No.

Function

Cable colour code

AAU-32 connector
pins

C4 LSB

brown

red

orange

yellow

green

blue

violet

white

grey

black

n/c

D2 MSB

torquoise*

n/c

common (0V) signal

pink

common (0V) power yellow/red

b +M

+24 V vibrator

red/blue

+24 V encoder

green/red

shell

case/ground

shell

a + shell

OPTIONAL CABLE CONNECTIONS

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Testing and Fault Finding

Testing the ARINC 429 Option
To enable and disable this ARINC 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.

Configuring and enabling the ARINC 429 Option To enable the ARINC option as follows:

Press and hold down F1 and press SETUP to enter the configuration menu. Release both keys.
Press [MORE], [DISPLAY/OPTIONS], [OPTIONS], [ARINC-429]. Check the display shows ARINC 429 is selected.

ADTS 405 mode

value units of measurement

ADTS 405 status

Alt

XXXXX

Leak Measure

Bus

XXXXX

ARINC 429

ft
ft WARMUP

Note: If the ARINC 429 option is not fitted the value is replaced by “absent”. If the above procedure is unsuccessful, check the continuity of the ARINC 429 cable. If faulty, replace the cable. If the continuity of the cable is correct, return the ADTS 405 to the repair depot.

K114 Issue No. 9

Function

output +ve

output -ve

input +ve

input -ve

Ground/earth

shell

Colour yellow blue green
red –

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5.8 Fault Finding
5.8.1 Error Messages In the event of a malfunction, the built-in, self-test and diagnostic system displays an error message and error code. A unit displaying this type of error should be returned to the repair depot:
TABLE 5-2 ERROR MESSAGES

Error Code
515 516 517 550 551 601 603 603 701 702 703 704 710 711 712 713 714 717 720 721 722 723 724 727 801 802 900 999

Error Message

Hexadecimal Code

PSU NO LONGER READY

UNKNOWN CONTROLLER ERROR

RING TIME OUT

Ps HUMIDITY SENSOR FAILURE

Pt HUMIDITY SENSOR FAILURE

INTERNAL RAM ERROR

ERROR WRITING TO EEPROM

Note:

SYSTEM EEPROMS FAULTY OR NOT FITTED

Some errors display

extra information

Ps SELF-TEST ERROR

using a four digit

Pt SELF-TEST ERROR

hexadecimal code.

Ps SELF-TEST TIME OUT ERROR

This should always be recorded with the error

Pt SELF-TEST TIME OUT ERROR

number to provide

Ps CONTROLLER ERROR Ps CONTROLLER ERROR

information for the

repair depot.

Ps CONTROLLER ERROR Ps CONTROLLER ERROR

IMPORTANT NOTE

Ps CONTROLLER ERROR Ps CONTROLLER ERROR Pt CONTROLLER ERROR Pt CONTROLLER ERROR Pt CONTROLLER ERROR Pt CONTROLLER ERROR Pt CONTROLLER ERROR Pt CONTROLLER ERROR

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).

IEEE488 DRIVER FAILED TO OPEN

IEEE488 DRIVER FAILED TO RESET

INTERNAL SOFTWARE

INTERNAL ERROR

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Testing and Fault Finding

5.8.2 Warning Messages The following table lists the warning messages with the probable cause and action to be taken.
TABLE 5-3 WARNING MESSAGES

No. Message

Probable Cause

INVALID USER INPUT

The numberic value entered was outside the allowed range

Action
Re-enter value within allowed range

OPERATE CAL ENABLE ON STATUS PANEL

Calibration started before removing calibration enable plate on the front panel

Refer to the main fault finding chart in the service manual

ONLY VALID IN CONTROL MODE

210

Ps SOFT START TIMEOUT

212

Ps PRESSURE FAIL

213

Ps VACUUM FAIL

220

Pt SOFT START TIMEOUT

222

Pt PRESSURE FAIL

Selection not allowed in Leak measure mode

Select controller on

The Ps controller has failed to go into control mode

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

The Ps controller has detected loss of

supply 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

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

enough pressure

The Ps controller has detected loss

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

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

vacuum

The Pt controller has failed to go into control mode

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

The Pt controller has detected loss of

supply 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

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

enough pressure

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TABLE 5-3 WARNING MESSAGES (CONTINUED)

No. Message

223

Pt VACUUM FAIL

Probable Cause

Action

The Pt controller has detected loss of

supply vacuum and automatically

switched all channels to measure mode. This can occur at very high rates of pressure change in large vol

Documents / Resources

isurplus ADTS405 Air Data Test Systems [pdf] User Manual
ADTS405 Air Data Test Systems, ADTS405, Air Data Test Systems, Data Test Systems, Test Systems, Systems

References

User Manual

isurplus ADTS405 Air Data Test Systems

Introduction

Scope

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Maintenance

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