Thommen AD20 Installation And Operation Manual
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Thommen AD20 Installation And Operation Manual

Standby altimeter
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REVT.ETHOMMENAG
CH-4437 Waldenburg
07-Sep-2009
AD20
Standby
Altimeter
p
age
1
or 72
Document No:
AD-l
NSOP-800
Revision:
1.6
TITLE:
INSTALLATION AND OPERATION MANUAL
AD20 Standby
Altimeter
DOCUMENT
NO.:
AD-INSOP-8O0
REVISION:
PRCJECT:
1.6
Solid State Flight lnstrument Family
MANUFACTURER:
REVUETHOMMENAG
CH-4437
Waldenburg
Switzerland
ISSUING
OFFICE:
Development Department
Näme
Si,gnature
Date
Author:
M.Baumann
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07-Sep-2009
Project Management:
R.
Wehrli
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22-Sep-2009
Development
M
anagement:
R.
Wehrli
/.ü/u{
22-Sep-2009
Quality Management:
O.
Thommen
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Copyright by REVUE THOMMEN AG, CH-4437 Waldenburg Switzerland

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  • Page 2 AD20 Standby Altimeter Page 2 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 Change History Rev. Modification / Description Date Author checked First release of document 18-Aug-2006 R. Eichhorn R. Wehrli Minor corrections 09-Nov-2006 R. Wehrli M.

  • Page 3: Table Of Contents

    AD20 Standby Altimeter Page 3 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 ABLE OF ONTENTS SECTION I............................. 10 Introduction..........................10 1.1.1 Purpose of the manual ...................... 10 1.1.2 Equipment Specification....................10 1.1.2.1 Applicable Documents ....................10 1.1.2.2...
  • Page 4 AD20 Standby Altimeter Page 4 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 2.3.1.2 Micro Controller ......................23 2.3.1.3 ARINC 429 Interface (optional)..................23 2.3.1.4 Pointer Positioning ......................24 2.3.1.5 Dial and Display ......................24 2.3.1.5.1...
  • Page 5 AD20 Standby Altimeter Page 5 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 3.1.3.6 Hysteresis........................40 SECTION IV ..........................41 Installation..........................41 4.1.1 General ..........................41 4.1.2 Unpacking and Inspecting....................41 4.1.3 Pre and Post Installation Check..................41 4.1.4...
  • Page 6 AD20 Standby Altimeter Page 6 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 SECTION V ........................... 58 Trouble shooting ........................58 Maintenance..........................59 Manual Maintenance Mode..................... 60 5.3.1 Entering Manual Maintenance Mode ................60 5.3.2 Display 1: Battery Capacity Test (provision)..............
  • Page 7 AD20 Standby Altimeter Page 7 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 . 5-3 L ..................62 IGHTING URVE ELECTION ISPLAY . 5-4 L ....................64 IGHTING URVE DJUSTMENT . 5-5 L ................... 65...
  • Page 8 AD20 Standby Altimeter Page 8 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 4-12 D ..................... 56 ABLE ISCRETE NPUTS UNCTIONS 4-13 A ....................57 ABLE IRCRAFT ELECTION 4-14 D ......................57 ABLE ISCRETE UTPUTS 5-1 T ..................

  • Page 9: Built - In

    AD20 Standby Altimeter Page 9 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 IST OF BBREVIATIONS AND CRONYMS Abbreviation Description Aircraft Absolute ARINC Aeronautical Radio Inc. ASCII American Standard Code for Information Interchange Built In Test...

  • Page 10: Section I

    1.1.1 Purpose of the manual This manual provides the specifications, installation instructions, equipment operation and system maintenance in details for the REVUE THOMMEN AD20 Standby Altimeter. This manual also defines interface design requirements including mechanical and electrical characteristics for the AD20 Standby Altimeter.

  • Page 11: Mil-Standards

    AD20 Standby Altimeter Page 11 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 Identifier Document Title Issue / Date CS-27 Certification Specifications for Small Rotorcraft 14/11/2003 AC 27-1B Certification of Normal Category Rotorcraft 9/30/99 TSO-C10b...

  • Page 12: Revue Thommen S

    RT-SDS-020 RT Software Design Standards RT-SCS-020 RT Software Code Standards RTW-MM-05 REVUE THOMMEN Management Manual Table 1-4 REVUE THOMMEN Standards, Plans and Documents Referenced Documents (Guidance Material) Identifier Document Title Issue / Date ARINC 607-3 Design Guidance for Avionic Equipment...

  • Page 13: Identification

    AD20 Standby Altimeter Page 13 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 Order of precedence In the event of a conflict between the text of this specification and the references cited herein, (except for associated detail specifications or specification sheets), the text of this specification shall take precedence.

  • Page 14: Identification/Name Plate

    07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 1.1.2.2.2 Identification/Name Plate The Identification/Name plate is attached on the instrument case of AD20 Standby Altimeter. The sample of Identification/Name plate of AD20 Standby Altimeter is shown below: ETSO/TSO-Nameplate (sample) REVUE THOMMEN AG CH-4437 WALDENBURG...

  • Page 15: Installation Kit

    Document No: AD-INSOP-800 Revision: 1.6 1.1.2.3 Installation Kit Part Number Quantity Description AD20.XX.XXX.XX.X.XX REVUE THOMMEN AD20 Standby Altimeter REVUE THOMMEN AD20 Standby Altimeter AD-INSOP-800 Installation and Operation Manual AD-DDP-XXX Declaration of Design and Performance Table 1-6 Installation Kit NOTE: As per ordered by the Installer.

  • Page 16: Equipment Dimensions

    AD20 Standby Altimeter Page 16 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 1.1.4 Equipment Dimensions Fig. 1-2 Equipment Side View NOTE: The dimensions are in millimeters or inches NOTE: Not to scale.

  • Page 17: Pneumatic Pressure Port

    AD20 Standby Altimeter Page 17 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 Fig. 1-3 Equipment Back View and Equipment cut-out 1.1.5 Pneumatic Pressure Port Mechanical Pressure range Over pressure capability Static Port ”S” 1/2“-20UNJF-3B 100 …...

  • Page 18: Interface Block Diagram

    AD20 Standby Altimeter Page 18 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 1.1.6 Interface Block diagram Fehler! Keine gültige Verknüpfung. Fig. 1-4 Interface Block Diagram...

  • Page 19: Section Ii

    This Section provides the description, the theory of operation and functional modes required to understand and operate of AD20 Standby Altimeter unit. Refer to the following paragraph for the brief description of the instrument. The AD20 Standby Altimeter belongs to the Solid State Flight Instruments Family of REVUE THOMMEN AG.

  • Page 20: Functional Description

    AD20 Standby Altimeter Page 20 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 2.2.2 Functional Description Fig. 2-1 Front View Display Controls Digital Altitude Display Baro Setting / Push-to-Standard Knob Altitude Pointer UNIT Button Altitude Scale Setting ft / m...

  • Page 21: Display

    AD20 Standby Altimeter Page 21 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 2.2.2.1 Display 2.2.2.1.1 Digital Altitude Display The aircraft's altitude is displayed on the digital display window with the range from –1’000 up to 55'000 ft, in 10, 20, 50 or 100 ft increments.

  • Page 22: Controls

    / ft, inHg / ft, hPa / m (all combinations) 2.2.2.2.4 TEST Button The “TEST” button is flush mounted and located on the bezel of the AD20 Standby Altimeter. By pushing and holding the TEST button for few seconds, the instrument performs the self test function (Built-In-Test) for the internal circuitry and the LCD.

  • Page 23: Operations

    Document No: AD-INSOP-800 Revision: 1.6 2.3 Operations This part of the manual is to familiarize the reader with the REVUE THOMMEN AD20 Standby Altimeter instrument and to give a brief operational description. Caution: The REVUE THOMMEN AD20 Standby Altimeter has been designed to exhibit a very high degree of functional integrity.

  • Page 24: Pointer Positioning

    AD20 Standby Altimeter Page 24 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 The following table shows the ARINC labels for various signals used for REVUE THOMMEN AD20 Standby Altimeter : Label Signal Name Operational Unit Resolution...

  • Page 25: Dial And Display Lighting Default Function

    AD20 Standby Altimeter Page 25 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 2.3.1.5.1 Dial and Display Lighting Default Function When external dial lighting is off or less than the threshold voltage VTH then the LCD light is at full intensity.

  • Page 26: Configuration Identification

    The configuration identification defines a specific instrument configuration parameterized by the individual parameter lists for each REVUE THOMMEN AD20 Standby Altimeter instrument, which in turn explains the different parameter requested by the installer. So for every new AD20 Standby Altimeter a different Configuration ID number is designated.

  • Page 27: Battery Status Display Overview (Optional)

    AD20 Standby Altimeter Page 27 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 1) Operating range: • nominal operating range where instrument shall be within specs 2) BIT limits • transmitted values shall be within the parametric BIT limits (tolerances for extreme environmental conditions have been added) •...

  • Page 28: Digital Display

    Revision: 1.6 2.3.1.10 Digital Display The following table shows the altitude indication and the baro setting on the display of the REVUE THOMMEN AD20 Standby Altimeter: The altitude display in feet is shown in the table below: Measured Altitude [feet] LCD Indication [feet] Rem.

  • Page 29: Table 2-8 Altitude Display Resolution In Feet

    AD20 Standby Altimeter Page 29 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 Remarks: 1) Resolution configurable 2) Nominal value including TSO-Tolerance at extreme temperature condition, parametrical. 3) Nominal value including TSO-Tolerance (converted from feet to meter), parametrical.

  • Page 30: Testing

    AD20 Standby Altimeter Page 30 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 2.4 TESTING 2.4.1 Startup BIT Sequence As soon as the instrument is powered all segments and annunciations on the instrument are seen for 1 s during startup built-in-test time.

  • Page 31: Display Config Id And A/C Type

    AD20 Standby Altimeter Page 31 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 The ‘Bar-Graph’ displays the current battery charge in 20% steps while the lower number shows the charge in %. The aircraft should not start before a minimum charge of 20 % is available.

  • Page 32: Built-In-Test

    AD20 Standby Altimeter Page 32 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 2.4.2 Built-in-Test 2.4.2.1 BIT Overview When? Action Duration Startup BIT primary, emergency or - display all LCD segments As long as pointer...

  • Page 33: Failure Modes

    If AD20 Standby Altimeter has a failure detected, the failure will be displayed by the indication of word “Err” on the display which can stop its operation. Even the warning flag valid output discrete (WFVOUTD) can indicate an error.

  • Page 34: Non Critical Or Tolerable Failures

    The REVUE THOMMEN AD20 Standby Altimeter has the ability to find possible failures via extensive built in test (BIT) functions. To read the BIT history the AD20 Standby Altimeter can be connected via the RS232 serial data interface to PC. The failure codes are then uploaded with the maintenance Software.

  • Page 35: Critical Failure Indication

    AD20 Standby Altimeter Page 35 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 2.4.3.3 Critical Failure Indication Critical Failures are indicated by the lower three digits of the altitude display showing steady ‘E r r’.

  • Page 36: Section Iii

    3 Section III 3.1 Approvals 3.1.1 General The approval of the REVUE THOMMEN AD20 Standby Altimeter Instrument is being accomplished under ETSO/TSO-C10b, RTCA/DO-160D / DO-178B Level A. NOTE: The TSO identifies the minimum performance standards, tests and other conditions applicable for issuance of design and production approval of the Instrument and does not specifically identify acceptable conditions for installation.

  • Page 37: Environmental Qualification

    AD20 Standby Altimeter Page 37 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 3.1.3 Environmental Qualification The flight instrument will indicate readings within the limits specified under the following environmental conditions: Environmental Criteria Requirement Remarks RTCA/DO-160D Temperature &...
  • Page 38 AD20 Standby Altimeter Page 38 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 Environmental Criteria Requirement Remarks RTCA/DO-160D Waterproofness RTCA/DO-160D Section 10.0 Cat. W Fluids Susceptibility RTCA/DO-160D Section 11.0 Cat. F Solvent and cleaning Fluids,...

  • Page 39: Other

    AD20 Standby Altimeter Page 39 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 Environmental Criteria Requirement Remarks RTCA/DO-160D Voltage Spikes RTCA/DO-160D Section 17.0 Cat. A Audio Frequency Conducted RTCA/DO-160D Section 18.0 Cat. Z Susceptibility Induced Signal Susceptibility RTCA/DO-160D Section 19.0 Cat.

  • Page 40: Electromagnetic Environment (Eme)

    3.1.3.3 Electromagnetic interference (EMI) The generation of EMI by the REVUE THOMMEN AD20 Standby Altimeter and its susceptibility to EMI is controlled to the limitation in accordance to RTCA/DO-160D and as modified REVUE THOMMEN AD20 Standby Altimeter specification.

  • Page 41: Section Iv

    • Discrete I/O’s 4.1.4.2 Power Control (DC Primary) The REVUE THOMMEN AD20 Standby Altimeter is designed for 28 VDC power supply in accordance with RTCA/DO-160D Section 16.0 under Category Z. 4.1.4.3 Power Consumption The following table shows values of power consumed by REVUE THOMMEN AD20 Standby Altimeter instruments with the full operating functionality.

  • Page 42: Power Failure Indication

    AD20 Standby Altimeter Page 42 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 AD20 Standby Altimeter Power Consumption (no Battery, no ARINC429) Operation Lighting on / maximum Lighting off / minimum (5 VDC) (5 VDC)

  • Page 43: Harness With Unshielded Power Wires, Rf Susceptibility Cat. [Ww]

    AD20 Standby Altimeter Page 43 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 Fig. 4-1 Harness Shielding RF Cat. [YY] 4.1.4.5.2 Harness with unshielded power wires, RF Susceptibility Cat. [WW] The GROUND strap should be electrically connected to the mating connector with conductive over- braided shielding and the other end shall be connected to aircraft ground.

  • Page 44: Electrical Connector

    AD20 Standby Altimeter Page 44 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 4.1.5 Electrical connector 4.1.5.1 Pin Assignments The following connector Type shall be used: MS3112E-14-19P (acc. to MIL-C-26482 Series 1). Assignment of Pin-Numbers see table below:...

  • Page 45: Table 4-2 Pin Assignments

    AD20 Standby Altimeter Page 45 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 Signal Name Function Signal EMC cat. Remarks Type Discrete Input 3 A/C Type - A Discr. In susc. Discrete Input 4 A/C Type - B Discr.

  • Page 46: Wiring Diagram (Shielded Power Wires, Rf Susc. Cat. [Yy])

    AD20 Standby Altimeter Page 46 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 4.1.5.2 Wiring Diagram (shielded power wires, RF Susc. Cat. [YY]) Primary Power Supply Primary Power Supply Twisted shielded pair Twisted shielded pair...

  • Page 47: Wiring Diagram (Unshielded Power Wires, Rf Susc. Cat. [Ww])

    AD20 Standby Altimeter Page 47 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 4.1.5.3 Wiring Diagram (unshielded power wires, RF Susc. Cat. [WW]) Wire length 3.3 m, unshielded Wire length 1 m, unshielded Primary Power Supply...

  • Page 48: Digital Data Interface

    AD20 Standby Altimeter Page 48 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 4.1.6 Digital Data Interface 4.1.6.1 ARINC 429 (optional) 4.1.6.1.1 ARINC 429 Data bus Interface Digital Data Standards are acc. to ARINC 429 Mark 33 DITS and ARINC 706 ADS...

  • Page 49: Label 203 (Pressure Altitude)

    AD20 Standby Altimeter Page 49 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 4.1.6.1.4 Label 203 (Pressure Altitude) Label 203 (Pressure Altitude) Label LSB 8 Bit SAL = 203 octal Label MSB Source / Destination Identifier...

  • Page 50: Label 204 (Baro Corrected Altitude #1)

    AD20 Standby Altimeter Page 50 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 4.1.6.1.5 Label 204 (Baro corrected altitude #1) Label 204 (Baro corrected altitude #1) SAL LSB 8 Bit SAL = 204 octal SAL MSB...

  • Page 51: Label 217 (Static Pressure )

    AD20 Standby Altimeter Page 51 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 4.1.6.1.6 Label 217 (Static Pressure ) Label 217 (Static Pressure ) 1 SAL LSB 8 Bit SAL = 217 octal 8 SAL MSB...

  • Page 52: Label 234 (Baro Correction Hpa #1)

    AD20 Standby Altimeter Page 52 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 4.1.6.1.7 Label 234 (Baro correction hPa #1) Label 234 (Baro correction hPa #1) 1 SAL LSB 8 Bit SAL = 234 octal...

  • Page 53: Label 235 (Baro Correction Inhg #1)

    AD20 Standby Altimeter Page 53 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 4.1.6.1.8 Label 235 (Baro correction inHg #1) Label 235 (Baro correction inHg #1) 1 SAL LSB 8 Bit SAL = 235 octal...

  • Page 54: Label 270 (Discrete Word #1)

    AD20 Standby Altimeter Page 54 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 4.1.6.1.9 Label 270 (Discrete word #1) Label 270 (Discrete word #1) 1 SAL LSB 8 Bit SAL = 270 octal 8 SAL MSB...

  • Page 55: Label 350 (Maintenance Word #1) (Provision)

    AD20 Standby Altimeter Page 55 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 4.1.6.1.10 Label 350 (Maintenance word #1) (Provision) The content of the maintenance label is to be defined. Label 350 (Maintenance word #1)

  • Page 56: Discrete I/O's

    AD20 Standby Altimeter Page 56 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 4.1.6.2 Discrete I/O’s 4.1.6.2.1 Discrete Inputs Five (5) discrete inputs are available. The use and logic of the discrete I/Os are parametrical.

  • Page 57: Discrete Outputs

    AD20 Standby Altimeter Page 57 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 Table 4-13 Aircraft Type Selection Depending on the selected aircraft the model number (parametric) shall be indicated during startup. 4.1.6.2.4 Discrete Outputs No.

  • Page 58: 07-Sep-2009

    Dual Lighting module make sure/repair of Dial Lighting module Table 5-1 Trouble Shooting Procedures NOTE: For any malfunction of REVUE THOMMEN AD20 Standby Altimeter not listed in the table above, the manufacturer can be contacted for assisting in the trouble shooting.

  • Page 59: Maintenance

    Document No: AD-INSOP-800 Revision: 1.6 5.2 Maintenance The Maintenance of the REVUE THOMMEN AD20 Standby Altimeter instrument must be performed by the manufacturer representative or certified personnel. The following is the summary of maintenance modes which are provided for maintaining the...

  • Page 60: Manual Maintenance Mode

    AD20 Standby Altimeter Page 60 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 5.3 Manual Maintenance Mode The manual maintenance mode gives access to internal settings and maintenance functions. The sub modes of the manual maintenance mode are:...

  • Page 61: Display 2: High Resolution Altitude

    AD20 Standby Altimeter Page 61 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 InHg Fig. 5-1 Battery Test Display The battery test stops if the manual maintenance mode is left or if the battery is discharged completely.

  • Page 62: Display 3: Lighting Curve Selection

    AD20 Standby Altimeter Page 62 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 5.3.4 Display 3: Lighting Curve Selection For four different aircraft types the lighting curves can be selected individually. Each lighting curve is assigned to one of the four lighting conditions shown in table below.
  • Page 63 AD20 Standby Altimeter Page 63 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 The lighting curve number is increased by pushing the UNIT button. Select the lighting curve number that shall be assigned to the selected lighting condition number.

  • Page 64: Display 4: Lighting Curve Adjustment

    AD20 Standby Altimeter Page 64 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 5.3.5 Display 4: Lighting Curve Adjustment This function is used to adjust the lighting characteristics of the instrument. Each dim step can be adjusted in relation to the applied lighting voltage.
  • Page 65 AD20 Standby Altimeter Page 65 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 The following procedure shall be performed to set new brightness levels: Enter manual maintenance mode and select lighting curve adjustment display 4 The selected lighting condition number and the current dim step (according to the applied lighting voltage) are shown.
  • Page 66 AD20 Standby Altimeter Page 66 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 Confirm the adjustment by pushing the UNIT button. The following display appears. The current PWM value for the selected dim step blinks.

  • Page 67: Appendices

    AD20 Standby Altimeter Page 67 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 6 Appendices 6.1 APPENDIX I: Function Overview = standard feature O = optional feature Features Specification AD20 Basic Functions Altitude Range - 1,000 ... 55,000 ft...

  • Page 68: Label 203

    AD20 Standby Altimeter Page 68 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 Features Specification AD20 Outputs ARINC 429 2 transmit channels Warning Flag Valid Output Discrete output Battery Status Discrete output Interfaces digital RS232 For maintenance &...

  • Page 69: Table 6-1 Functiono

    AD20 Standby Altimeter Page 69 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 Features Specification AD20 ARINC 408, 2 inches Case Electrical Connectors MS3112E-14-19P (MIL-C-26482 Series 1) RTCA/DO-160D Environmental Conditions Operating temperature -30 ... 70°C (-22 / +158 °F) Storage temperature.

  • Page 70: Appendix Ii: Failure Codes

    AD20 Standby Altimeter Page 70 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 6.2 APPENDIX II: Failure Codes The test duration determines the time span in which the failure shall be detected after the test is executed.

  • Page 71: Table 6-2 Failure Codes

    AD20 Standby Altimeter Page 71 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 Description Failure Instrument Class / Reaction Criticality for user 042 Static Pressure range exceeded CRIT According to Failure Class Definition < 30 hPa OR > 1100 hPa for >2 s...

  • Page 72: Appendix Iii: Altimeter Calibration Table

    AD20 Standby Altimeter Page 72 of 72 REVUE THOMMEN AG CH-4437 Waldenburg 07-Sep-2009 Document No: AD-INSOP-800 Revision: 1.6 6.3 APPENDIX III: Altimeter Calibration Table Altitude Tolerance acc. to ETSO/TSO-C10b [feet] ± [feet] (Baro setting 1’013 hPa) @ 25 °C - 30 / + 71°C (77 °F)

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