GE Druck ADTS 405 R Mk2 User manual

www.gemeasurement.com
GE Data Classification: Public
Druck
ADTS 405 R/F Mk2
Air Data Test Set
Instruction Manual

© 2017 General Electric Company – All Rights Reserved. ADTS 405 R/F Mk2 Instruction Manual-English | i
Introduction
This technical manual provides operating instructions for the Druck Air Data Test System
ADTS 405 Mk2 series.
Scope
This technical manual contains a brief description, operation and testing procedures for the
user of this equipment.
Safety
The manufacturer has designed this equipment to be safe when operated using the
procedures detailed in this manual:
• Do not use this equipment for any other purpose than that stated. Incorrect use can
prevent the protection given by the equipment from working.
• See Safety and Installation Guide 124M8686, also supplied, for essential operating
and Safety instructions that must be followed to ensure safe operation.
• Use suitably qualified*Technicians and good engineering practice for all procedures in
this publication.
Pressure
Do not apply pressure greater than the maximum safe working pressure specified in this
manual when using the ADTS 405 Mk2 series.
Toxic Materials
There are no known toxic materials used in this equipment.
Maintenance
The equipment must be maintained using the manufacturer’s procedures and should be
carried out by authorized service agents or the manufacturer’s service departments.
For technical advice contact GE or subsidiary manufacturer of this product.
CAUTION See Safety and Installation Guide 124M8686.
* A qualified technician must have the necessary technical knowledge, documentation, special test
equipment and tools to carry out the required work on this equipment.

ii | ADTS 405 R/F Mk2 Instruction Manual-English © 2017 General Electric Company – All Rights Reserved.
Marks and Symbols on the Equipment
Associated Publications
The following table lists the Druck publications referenced in this manual:
Symbol Description
This equipment meets the requirements of all relevant European safety directives. The
equipment carries the CE mark.
This symbol, on the equipment, indicates that the user should read the user manual.
This symbol, on the equipment, indicates a warning and that the user should refer to the
user manual.
Ce symbole, sur l'appareil, est un avertissement qui indique que l'utilisateur doit consulter
le manuel d'utilisation.
This symbol warns the user of the danger of electric shock.
Ce symbole alerte l’utilisateur sur le danger de choc électrique.
Do not dispose of this product as household waste. Use an approved organization that
collects and/or recycles waste electrical and electronic equipment. For more information,
contact one of these:
- Our customer service department: www.gemeasurement.com
- Your local government office.
Publication Title
124M8686 ADTS 405 F/R Mk2 Safety and Installation Guide
K0199 Calibration Manual
K0154 IEEE 488 Option 2 Manual
K0157 SCPI IEEE 488 Manual
K0170 Altimeter Encoder Option Manual
K0220 Line Switching Unit LSU 100/101 Manual
K0223 Line Switching Unit Operating and Communications Manual

© 2017 General Electric Company – All Rights Reserved. ADTS 405 R/F Mk2 Instruction Manual-English | iii
Abbreviations
The following abbreviations are used in this manual; the abbreviations are the same in the
singular and plural.
Abbreviation Description
A Ampere
abs Absolute
ac Alternating current
ALT Altitude
CAS Calibrated airspeed
dc Direct current
e.g. For example
EOC End of conversion
EPR Engine pressure ratio
EPROM Electrically programmable read only memory
etc. And so on
ft Foot
g Gauge
Hg Mercury
Hz Hertz
IAS Indicated airspeed
i.e. That is
IEEE 488 Institute of Electrical and Electronic Engineers Standard 488 Data
in inch
kg Kilogram
kts Knots
LED Light emitting diode
m Metre
mA Milliampere
max Maximum
mbar Millibar
mV Millivolts
No. Number
Nm Newton meter
Ps Static pressure
psi Pounds per square inch

iv | ADTS 405 R/F Mk2 Instruction Manual-English © 2017 General Electric Company – All Rights Reserved.
Glossary
The terminology used in this manual is specific and individual interpretation must not be
introduced. The terms are defined as follows:
Pt Total pressure (pitot)
Qc Differential pressure Pt-Ps
QFE Local atmospheric pressure
QNH Barometric pressure at sea level
ROC Rate of climb
Vc Calibrated velocity
Vt True velocity
+ve Positive
-ve Negative
°C Degrees Celsius
°F Degrees Fahrenheit
Item Description
Adjust To bring to a more satisfactory state; to manipulate controls, levers, linkages,
etc. to return equipment from an out-of-tolerance condition to an in-
tolerance condition.
Align To bring into line; to line up; to bring into precise adjustment, correct relative
position or coincidence.
Assemble To fit and secure together the several parts of; to make or form by combining
parts.
Calibrate To determine accuracy, deviation or variation by special measurement or by
comparison with a standard.
Check Make a comparison of a measure of time, pressure, temperature, resistance,
dimension or other quality with a known figure for that measurement.
Disconnect To detach the connection between; to separate keyed or matched equipment
parts.
Dismantle To take apart to the level of the next smaller unit or down to all removable
parts.
Ensure To confirm that a proper condition exists; to find out with certainty.
Examine To perform a critical visual observation or check for specific conditions; to test
the condition of.
Fit Correctly attach one item to another.
Inspect Review the work carried out by Specialists to ensure it has been performed
satisfactorily.
Abbreviation Description

© 2017 General Electric Company – All Rights Reserved. ADTS 405 R/F Mk2 Instruction Manual-English | v
Returned Goods Procedure
If the unit requires calibration or is unserviceable, return it to the nearest GE Service Centre
listed at: www.gemeasurement.com
Contact the Service Department to obtain a Return Authorization (Worldwide excluding
USA).
In the USA, obtain a Return Material Authorization [RMA].
Provide the following information on either a RGA or RMA:
• Product (i.e. ADTS 405F Mk2 or ADTS 405R Mk2).
• Serial number.
• Details of defect/work to be undertaken.
• Include any error code(s) and hex value(s) if available. See Section 6.2, “Error
Messages,” on page 57 for more details.
• Operating conditions.
Install To perform operations necessary to properly fit an equipment unit into the
next larger assembly or system.
Maintain To hold or keep in any particular state or condition especially in a state of
efficiency or validity.
Operate Ensure that an item or system functions correctly as far as possible without
the use of test equipment or reference to measurement.
Readjust To adjust again; to move back to a specified condition; to bring back to an in-
tolerance condition.
Reconnect To rejoin or refasten that which has been separated.
Refit Fit an item which has previously been removed.
Remove To perform operations necessary to take an equipment unit out of the next
larger assembly or system. To take off or eliminate. To take or move away.
Repair To restore damaged, worn out or malfunctioning equipment to a serviceable,
usable or operable condition.
Replace Remove an item and fit a new or a serviced item.
Reset To put back into a desired position, adjustment or condition.
Service To perform such operations as cleaning, lubricating and replenishing to
prepare for use.
Test Ascertain by using the appropriate test equipment that a component or
system functions correctly.
Item Description

vi | ADTS 405 R/F Mk2 Instruction Manual-English © 2017 General Electric Company – All Rights Reserved.
Safety Precautions
You must inform GE if the product has been in contact with any hazardous or toxic substance.
The relevant COSHH or in the USA, MSDS, references and precautions to be taken when
handling.
Approved Service Agents
For the list of service centers:
www.gemeasurement.com
Pressure Units and Conversion Factors
To convert from pressure Value 1 (in pressure Units 1) to pressure Value 2 (in pressure
Units 2), calculate as follows:
INFORMATION Service by unauthorized sources will affect the
warranty and may not guarantee further performance.
Pressure Units Factor (hPa) Pressure Units Factor (hPa)
mbar 1.0 cmH2O @ 20°C 0.978903642
bar 1000.0 mH2O @ 20°C 97.8903642
Pa (N/m2)0.01 kg/m
20.0980665
hPa 1.0 kg/cm2980.665
kPa 10.0 torr 1.333223684
MPa 10000.0 atm 1013.25
mmHg @ 0°C 1.333223874 psi 68.94757293
cmHg @ 0°C 13.33223874 lb/ft20.4788025898
mHg @ 0°C 1333.223874 inH2O @ 4°C 2.4908891
inHg @ 0°C 33.86388640341 inH2O @ 20°C 2.486413
mmH2O @ 4°C 0.0980665 inH2O @ 60°F 2.487641558
cmH2O @ 4°C 0.980665 ftH2O @ 4°C 29.8906692
mH2O @ 4°C 98.0665 ftH2O @ 20°C 29.836983
mmH2O @ 20°C 0.097890364 ftH2O @ 60°F 29.8516987
Value2Value1Factor1
Factor2
---------------------------------------------
=

© 2017 General Electric Company – All Rights Reserved. ADTS 405 R/F Mk2 Instruction Manual-English | vii
Contents
1. Description 1
1.1 Introduction 1
1.2 Operating Range and Performance 1
1.3 Operating Limits 2
2. Installation 5
2.1 List of Parts 5
2.1.1 ADTS 405F Mk2 Standard Packaging List 5
2.1.2 ADTS 405R Mk2 Standard Packaging List 5
2.2 Packaging for Storage or Transportation 6
2.2.1 Environment 6
2.2.2 Procedure 6
2.3 Power Supply 9
2.3.1 AC Input 9
2.3.2 DC Input (Option ADTS 405F Mk2 Only) 9
2.3.3 ADTS 405R Mk2 Rack-mounted Version 9
2.4 Positioning of the ADTS 10
2.4.1 ADTS 405R Mk2 Rack-mounted Version 10
2.4.2 ADTS 405F Mk2 Flight-line Version 11
2.5 Product Views 12
3. Getting Started 15
3.1 Preparation 15
3.2 Start-up 15
3.2.1 Connections 15
3.2.2 Power-up 16
3.2.3 Units of Measure 18
3.3 Keypad Display 19
3.4 Operation Quick Reference 19
3.5 Operating Mode Overview 22
3.5.1 Measure Mode (Pressure Measurement Mode) 23
3.5.2 Control Mode (Pressure Control Mode) 24
3.5.3 Leak Measure Mode (Timed Average Leak Rate Measurement) 25
3.5.4 Go to Ground (Control to Local Ground Pressure) 26
4. Operation 27
4.1 Control or Measure Parameter 27
4.1.1 Display Functions 27
4.1.2 Rate Timer Displays 29

viii | ADTS 405 R/F Mk2 Instruction Manual-English © 2017 General Electric Company – All Rights Reserved.
4.1.3 Pt Only Display 30
4.2 Changing the Display 30
4.2.1 Change to Single, Dual or Triple Display 31
4.2.2 Changing the Display for Pt Only 31
4.3 Changing the Units 31
4.3.1 Changing the Measurement Units 31
4.3.2 Changing the Unit Type 31
4.4 Aim 32
4.5 Leak Measure 32
4.5.1 UUT Leak Test 32
4.5.2 ADTS 405 Mk2 Leak Test 32
4.6 Aircraft System Protection 34
4.6.1 Auto Recovery Facilities 35
4.6.2 Limit Checking 35
4.7 Changing Parameters 36
4.7.1 Mach Test and Constant Mach 36
4.7.2 True Airspeed 36
4.8 Airspeed Switch Test 36
4.9 Engine Pressure Ratio (EPR) 37
4.9.1 Example EPR Test 37
4.10 Testing Aircraft Systems or UUT 38
4.10.1 Go To Ground and Shutdown 38
4.10.2 While Going to Ground 38
4.10.3 Resuming Testing after Going to Ground 38
4.11 Setup Options 39
4.11.1 Change Units in Full Setup Mode 39
4.11.2 Change Units in Minimum Setup Mode 40
4.12 Configuration Options 40
4.13 Communications Panel Options 40
4.13.1 Ethernet System 40
4.13.2 Changing the Default Access Password 42
4.13.3 Access ADTS Files 43
4.14 IEEE 488 Option 45
4.14.1 Enabling the IEEE 488 Option 45
4.14.2 IEEE 488 Connector 46
4.15 Enabling the Altimeter Encoder Option 47
5. Maintenance 49
5.1 Introduction 49
5.2 Materials 49
5.3 Maintenance Tasks 50
5.4 Routine Maintenance 51
5.4.1 Servicing Procedures 51
5.4.2 Replacing the Output Connector O-ring 51
5.4.3 Fuse Replacement 51

© 2017 General Electric Company – All Rights Reserved. ADTS 405 R/F Mk2 Instruction Manual-English | ix
5.5 Cable Tests 55
5.5.1 Hand Terminal Cables 55
5.5.2 AC Power Regional Line Plug Cables 55
5.5.3 DC Power Cable 56
6. Testing and Fault Finding 57
6.1 Introduction 57
6.2 Error Messages 57
6.3 Warning Messages 57
6.4 Standard Serviceability Test 58
6.4.1 Connection and Power-on Checks 58
6.4.2 Pump Unit (ADTS 405F Mk2) 59
6.4.3 Completion 59
6.5 Fault Finding 59
6.6 Fault Diagnosis 60
6.7 Ventilating after Overpressure 62
6.8 Further Testing 63
6.8.1 Environmental and Preliminary Operations 63
6.8.2 Pressure Leak Check 63
6.8.3 Vacuum Leak Check 64
6.8.4 Range Check 64
6.8.5 Controller Stability 64
6.8.6 External Communication Ports 66
6.8.7 Altimeter Encoder 68
7. Reference 71
7.1 Introduction 71
7.2 Keypad Display 72
7.2.1 F1 - F4 72
7.2.2 ALT/Ps 72
7.2.3 SPEED/Qc 72
7.2.4 MACH/Pt 73
7.2.5 EPR 73
7.2.6 ROC/Ps RATE 74
7.2.7 RATE TIMER 74
7.2.8 HOLD 74
7.2.9 RATE 75
7.2.10 LEAK MEASURE/CONTROL 76
7.2.11 GROUND 76
7.2.12 [GO TO GROUND] 77
7.2.13 [DISPLAY QFE] 77
7.2.14 [DISPLAY QNH] 77
7.2.15 PORT 77
7.2.16 REMOTE 77

x | ADTS 405 R/F Mk2 Instruction Manual-English © 2017 General Electric Company – All Rights Reserved.
7.2.17 PRINT 78
7.2.18 EXECUTE TEST PROGRAM 78
7.2.19 HELP 80
7.2.20 or (Nudge Keys) 80
7.2.21 Number 0 to 9 80
7.2.22 -000 80
7.2.23 CLEAR/QUIT 81
7.2.24 ENTER 81
7.2.25 CLEAR + ENTER (ABORT) 81
7.3 SETUP 82
7.3.1 FULL SETUP 82
7.3.2 SETUP, [UNITS] 82
7.3.3 SETUP, [LIMITS] 83
7.3.4 SETUP, [OSC] 84
7.3.5 SETUP, [MORE], [CONTROL], [Ps Pt DUAL] 84
7.3.6 SETUP, [MORE], [DISPLAYS/OPTIONS], [DISPLAY TYPE] 85
7.3.7 SETUP, [MORE], [DISPLAYS/OPTIONS], [OPTIONS] 86
7.3.8 SETUP, [MORE], [CLOSE OUTPUT VALVES] 86
7.3.9 SETUP, [MORE], [OPEN OUTPUT VALVES] 87
7.3.10 SETUP, [MORE], [SYSTEM SELF TEST] 87
7.3.11 SETUP, ALT 87
7.3.12 SETUP, SPEED, [AUTO ZERO] 87
7.3.13 SETUP, SPEED, [CAS/TAS] 88
7.3.14 SETUP, SPEED, [Pt TEMPERATURE] 88
7.3.15 SETUP, MACH 88
7.3.16 SETUP, RATE TIMER 88
7.3.17 SETUP, RATE 88
7.3.18 SETUP, LEAK MEASURE CONTROL, [AUTO LEAK] 89
7.3.19 SETUP, LEAK MEASURE CONTROL, [AUTO LIMIT] 89
7.3.20 SETUP, GROUND 89
7.3.21 SETUP, [PORT] 89
7.3.22 SETUP, PRINT, [DATE/TIME] 89
7.3.23 SETUP, EXECUTE TEST PROGRAM 89
7.3.24 SETUP, HELP 89
7.3.25 SETUP, or (Nudge Keys) 90
7.3.26 MINIMUM SETUP 90
7.3.27 SETUP, [UNITS], [AERO] 90
7.3.28 SETUP, [UNITS], [PRESS] 90
7.3.29 SETUP, [LIMITS] 91
7.3.30 SETUP, HELP 91
7.4 CONFIGURATION 92
7.4.1 Procedure 92
7.4.2 Functions 92
7.4.3 CONFIG, [UNITS] 92
7.4.4 CONFIG, [LIMITS], [EDIT LIMITS], [EDIT EXISTING] 93
7.4.5 NAME 93

© 2017 General Electric Company – All Rights Reserved. ADTS 405 R/F Mk2 Instruction Manual-English | xi
7.4.6 MIN ALT, MAX ALT, MIN CAS, MAX CAS 94
7.4.7 MAX MACH 94
7.4.8 MAX ROC, MAX RATE CAS 94
7.4.9 MIN Ps, MAX Ps, MIN Qc, MAX Qc 94
7.4.10 MAX RATE Ps, MAX RATE Qc 94
7.4.11 ALTITUDE CORRECTION 94
7.4.12 ARINC LIMITS 94
7.4.13 SAVING LIMITS 95
7.4.14 CONFIG, [LIMITS], [EDIT LIMITS], [MAX LIMITS] 95
7.4.15 CONFIG, [LIMITS], [EDIT LIMITS], [EDIT NEW] 96
7.4.16 CONFIG, [LIMITS], [CLEAR LIMITS] 96
7.4.17 CONFIG, [LIMITS], [LOCK AIRCRAFT] 96
7.4.18 CONFIG, [LIMITS], [DEFAULT AIRCRAFT] 96
7.4.19 CONFIG, [MORE], [CONTROL], [CONTROL MODE] 96
7.4.20 CONFIG, [MORE], [DISPLAY/OPTIONS], [DISPLAY TYPE] 96
7.4.21 CONFIG, [MORE], [CONTROL], [CONTROL LOCK] 96
7.4.22 CONFIG, [MORE], [DISPLAY/OPTIONS], [DISPLAY TYPE] 96
7.4.23 CONFIG, [MORE], [DISPLAY/OPTIONS], [OPTIONS] 96
7.4.24 CONFIG, [MORE], [DATE/FORMAT] 96
7.4.25 CONFIG, [MORE], [SETUP MODE] 97
7.4.26 CONFIG, SPEED, [AUTO ZERO] 97
7.4.27 CONFIG, SPEED, [CAS/TAS] 97
7.4.28 CONFIG, SPEED, [Pt TEMPERATURE] 97
7.4.29 CONFIG, RATE TIMER 97
7.4.30 CONFIG, RATE 97
7.4.31 CONFIG, LEAK MEASURE, [AUTO LEAK ON/OFF] 97
7.4.32 CONFIG, LEAK MEASURE, [AUTO LEAK LOCK] 97
7.4.33 CONFIG, LEAK MEASURE, [AUTO LIMIT ON/OFF] 97
7.4.34 CONFIG, LEAK MEASURE, [AUTO LIMIT LOCK] 97
7.4.35 CONFIG, GROUND 98
7.4.36 CONFIG, PORT 98
7.4.37 CONFIG, REMOTE 98
7.4.38 CONFIG, ETP, [AUTO RUN] 98
7.4.39 CONFIG, ETP, [ERASE PROGRAMS] 98
7.4.40 CONFIG, ETP, [RESULT] 98
7.4.41 CONFIG, NUDGE 98
7.4.42 CONFIG, 000 98
8. Specification 101
8.1 Pressure/Vacuum Requirements 103
8.2 Warm-up Requirements 103
8.3 Measurement and Control Range Specifications 103
8.3.1 Operating Range and Performance 103
8.4 Control Performance 105
8.4.1 Stability 105

xii | ADTS 405 R/F Mk2 Instruction Manual-English © 2017 General Electric Company – All Rights Reserved.
8.4.2 Rate Control 105
8.4.3 Control Response 106
8.4.4 Dynamic Testing 106
8.4.5 Control Offset 106
Appendix A. Menus 107
A.1 Full Setup Menu 108
A.2 Minimum Setup Menu 111
A.3 Configuration Menu 112
Appendix B. Errors and Warnings 117
B.1 Error Messages 117
B.2 Warning Messages 118

© 2017 General Electric Company – All Rights Reserved. ADTS 405 R/F Mk2 Instruction Manual-English | xiii
Figures
Figure Page
2-1 Equipment and Parts 7
2-2 ADTS 405R Mk2 Altitude Reference 10
2-3 ADTS 405F Mk2 Altitude Reference 11
2-4 ADTS 405F Mk2 General View 12
2-5 ADTS 405R Mk2 Front Panel View 13
2-6 ADTS 405R Mk2 Rear Panel View 14
3-1 ADTS 405 Mk2 Keypad Display 19
4-1 Single Display 28
4-2 Dual Display 28
4-3 Triple Display 29
4-4 Rate Timer Display - Aeronautical Units 29
4-5 Rate Timer Display - Pressure Units 30
4-6 Pt Only Display 30
4-7 Configuring Windows For ADTS Subnet IP Address 41
4-8 Ping Test From Windows Command Prompt 42
4-9 PuTTY Configuration 43
4-10 Changing the Default Password 43
4-11 ADTS File System Directories Screen 45
5-1 Output Connector O-ring Seal 51
5-2 ADTS 405F Mk2 AC Fuse Positioning 52
5-3 ADTS 405F Mk2 DC Fuse Positioning 53
5-4 ADTS 405R Mk2 AC Fuse Positioning 54
6-1 Fault Finding Chart 60
6-2 External Communication Ports 66
7-1 ARINC 565 Operating Limits 95

xiv | ADTS 405 R/F Mk2 Instruction Manual-English © 2017 General Electric Company – All Rights Reserved.

© 2017 General Electric Company – All Rights Reserved. ADTS 405 R/F Mk2 Instruction Manual-English | xv
Tables
Table Page
1-1 Operating Limits - 850 kts Range 2
1-2 Operating Limits - 1,000 kts Range 3
2-1 Storage Conditions 6
2-2 Spares and Accessories List 8
2-3 AC Power Supply Requirements 9
2-4 DC Power Supply Requirements 9
3-1 Aeronautical Units of Measure 18
3-2 Pressure Units of Measure 18
3-3 Keypad Key Functions 19
4-1 Default IP Address Configuration 41
4-2 Default User Name and Password 42
4-3 Win SCP Client Credentials 44
4-4 IEEE 488 Connector Pin-out 46
5-1 Maintenance Chart 49
5-2 Maintenance Materials List 49
5-3 Tool and Test Equipment Requirements 50
5-4 AC Input Connector 56
5-5 DC Input Connector 56
6-1 Fault Advice and Action 61
6-2 Optional Cable (AAU-32 Units) 69
7-1 Rates in Aeronautical Units 75
7-2 Rates in Pressure Units 75
7-3 Aeronautical Units Dual Display 85
7-4 Pressure Units Dual Display 85
7-5 Aeronautical Units Triple Display 86
7-6 Pressure Units Triple Display 86
7-7 Setup Modes 97
8-1 Rack-mount ADTS 405R Mk2 Specification 101
8-2 Flight-line ADTS 405F Mk2 Specification 102
8-3 Performance Expressed in Aeronautical Units 104
8-4 Static and Pitot Performance Expressed in Pressure Units 104
8-5 Qc, Rate Qc and EPR Performance Expressed in Pressure Units 105
8-6 Controller Stability 105
8-7 Rate Control Capabilities 106
A-1 Menu Hierarchy Key 107
B-1 Error Messages 117
B-2 Warning Messages 118

xvi | ADTS 405 R/F Mk2 Instruction Manual-English © 2017 General Electric Company – All Rights Reserved.

Introduction
© 2017 General Electric Company – All Rights Reserved. ADTS 405 R/F Mk2 Instruction Manual-English | 1
1. Description
1.1 Introduction
There are two versions of this Air Data Test System (ADTS), a 19”, 6U high (10½”) rack-
mounted unit (ADTS 405R Mk2) and a flight-line unit (ADTS 405F Mk2).
The ADTS 405R Mk2 is a rack-mounted system and, with external pressure and vacuum
supplies connected, provides measurement and control of pitot and static systems and
components. The unit can be used for leak checks, calibration accuracy checks and functional
tests of air data instruments, components and systems.
The ADTS 405F Mk2 is a self-contained flight-line air data test system providing complete
pitot and static measurement and control. The unit can be used for on-aircraft sense and leak
testing, calibration accuracy checks and functional tests of air data instruments, components
and systems. The ADTS 405F Mk2 comprises an controller-rack and pump-rack enclosed in a
high density, polyethylene case.
The ADTS 405 Mk2 displays and operates in either units of pressure measurement or
aeronautical units. In the control mode, the rate that the pressures change towards new set-
points can be controlled in true aeronautical rate units.
There are two independent pneumatic channels connect to the aircraft or instrument
systems, one for static and one for pitot. They can be operated as measure only channels
with leak testing facility or each can be control channels producing true pressure conditions
for altitude and airspeed.
To protect sensitive instruments and equipment a “ground” facility automatically and safely
controls both channels to atmospheric pressure at the previously entered rates of change
and then informs the operator when both channels are safely at “ground”.
The operator interface is either a hand terminal connected to the front panel or the key pad
and display on the front panel. Both provide information and control selections for the user
through the keys and display. The keypad has a back-light for improved operation in poor light
conditions. The unit can also be controlled remotely using the 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 Mk2, produces pressure and vacuum supplies for the
controller-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 Mk2 is located on
the front panel.
1.2 Operating Range and Performance
The ADTS 405 Mk2 is supplied in one of two full-scale ranges (850 or 1000 kts) for
measurement and control of the pitot pressure channel.

Chapter 1. Description
2 | ADTS 405 R/F Mk2 Instruction Manual-English © 2017 General Electric Company – All Rights Reserved.
Operating limits are set, predefined tabular limits known as STANDARD, CIVIL and MAX these
can be selected through the SETUP menu (see Section 7.3.3, “SETUP, [LIMITS],” on page 83).
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 Mk2.
Table 1-1: Operating Limits - 850 kts Range
Parameter Max Limits Standard Limits Civil Limits
Min Alt -3,000 ft -2,000 ft -1,000 ft
Max Alt 105,000 ft 80,000 ft 50,000 ft
Min CAS -100 kts 0.0 kts 0 kts
Max CAS 850 kts 850 kts 450 kts
Min Ps 3.0 mbar 27.615 mbar 115.972 mbar
Max Ps 1355.00 mbar 1088.657 mbar 1050.406 mbar
Min Qc -1,352.00 mbar 0.0 mbar 0.0 mbar
Max Qc 1,700.00 mbar 1688.00 mbar 368.01 mbar
Max Mach 12.35 2.5 1
Max ROC 100,000 ft/min 9,000 ft/min 6,000 ft/min
Max Rate CAS 2,000 kts/min 600 kts/min 600 kts/min
Max Rate Ps 10,000.00 mbar/min 200.00 mbar/min 100.00 mbar/min
Max Rate Qc 10,000.00 mbar/min 200.00 mbar/min 100.00 mbar/min
ARINC Limits OFF OFF OFF
Alt Correction 0 ft 0 ft 0 ft