Thommen CM30 Installation And Operating Manual
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Thommen CM30 Installation And Operating Manual

Digital chronometer
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Installation and Operating Manual
CM30 Digital Chronometer
INSTALLATION AND OPERATING MANUAL
CM30 DIGITAL CHRONOMETER
ATA 31-22-20
Revision: 1.2
29/04/2022
THOMMEN AIRCRAFT EQUIPMENT AG
Hofackerstrasse 48, CH-4132 Muttenz, Switzerland

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  • Page 1 Installation and Operating Manual CM30 Digital Chronometer INSTALLATION AND OPERATING MANUAL CM30 DIGITAL CHRONOMETER ATA 31-22-20 Revision: 1.2 29/04/2022 THOMMEN AIRCRAFT EQUIPMENT AG Hofackerstrasse 48, CH-4132 Muttenz, Switzerland...
  • Page 2 Installation and Operating Manual CM30 Digital Chronometer INTENTIONALLY BLANK 31-22-20 TITLE PAGE Revision: 1.2 Page 2 29/04/2022...
  • Page 3 Reason for Revision Prepared Checked Approved Initial issue FEB 02/2012 T. Rolls T. Balazs Thommen logo and address changed. Page layout changed. DEC 02/2016 A. Anwar S. Jaquier Minor editing changes. ATA format included. Document reformatted. MID number removed (1777).
  • Page 4 Installation and Operating Manual CM30 Digital Chronometer INTENTIONALLY BLANK 31-22-20 RECORD OF REVISIONS Revision: 1.2 Page 2 29/04/2022...
  • Page 5 Installation and Operating Manual CM30 Digital Chronometer SERVICE BULLETIN LIST SB No. Subject Rev. Date 31-22-20 SERVICE BULLETIN LIST Revision: 1.2 Page 1 29/04/2022...
  • Page 6 Installation and Operating Manual CM30 Digital Chronometer INTENTIONALLY BLANK 31-22-20 SERVICE BULLETIN LIST Revision: 1.2 Page 2 29/04/2022...
  • Page 7 Installation and Operating Manual CM30 Digital Chronometer LIST OF EFFECTIVE PAGES SECTION PAGE REV. DATE SECTION PAGE REV. DATE Title Page 29/04/22 Description and Operation 29/04/22 29/04/22 29/04/22 29/04/22 29/04/22 29/04/22 Record of Revisions 29/04/22 29/04/22 29/04/22 29/04/22 29/04/22 29/04/22...
  • Page 8 Installation and Operating Manual CM30 Digital Chronometer SECTION PAGE REV. DATE SECTION PAGE REV. DATE Fault Isolation 29/04/22 Removal / Installation 29/04/22 29/04/22 29/04/22 29/04/22 29/04/22 Maintenance Practices 29/04/22 29/04/22 29/04/22 Adjustment / Test 29/04/22 29/04/22 29/04/22 29/04/22 29/04/22 29/04/22...

  • Page 9: Table Of Contents

    Installation and Operating Manual CM30 Digital Chronometer TABLE OF CONTENTS RECORD OF REVISIONS SERVICE BULLETIN LIST LIST OF EFFECTIVE PAGES TABLE OF CONTENTS INTRODUCTION 1. Purpose of this Manual 2. Manual Description 3. Revisions 4. Warnings, Cautions and Notes Warnings...

  • Page 10: Table Of Contents

    Installation and Operating Manual CM30 Digital Chronometer Possibilities of Installation Installation Features and Options Electrical Connectors Master-Slave Configuration Mounting Requirements ARINC Mounting Clamp Installation Procedure Software Updates Electrical Bonding Power Supply 2. Installation Features and Option Settings DIP Switches Timer Start Switch Signal (Discrete Signal Input)
  • Page 11 Installation and Operating Manual CM30 Digital Chronometer Procedure INSPECTION / CHECK 1. General 2. Inspection / Check References Special Tools and Equipment Consumable Materials Expendable Parts Preparation Procedure 31-22-20 TABLE OF CONTENTS Revision: 1.2 Page 3 29/04/2022...
  • Page 12 Installation and Operating Manual CM30 Digital Chronometer INTENTIONALLY BLANK 31-22-20 TABLE OF CONTENTS Revision: 1.2 Page 4 29/04/2022...

  • Page 13: Purpose Of This Manual

    INTRODUCTION Purpose of this Manual This Installation and Operating Manual (INSOP) gives a description of the CM30 Digital Chronometer and the necessary procedural steps to remove/install, inspect and maintain the equipment. It also gives the mechanical and electrical characteristics to make sure that it is compatible with the aircraft.

  • Page 14: Warnings, Cautions And Notes

    Installation and Operating Manual CM30 Digital Chronometer Warnings, Cautions and Notes Warnings WARNING: WARNINGS ARE GIVEN IN THE RELEVANT PAGE BLOCKS TO TELL PERSONNEL ABOUT SOMETHING THAT CAN CAUSE INJURY TO THEM. WARNINGS ARE GIVEN IMMEDIATELY BEFORE THE APPLICABLE TEXT TO WHICH THEY REFER.

  • Page 15: Technical Support

    Installation and Operating Manual CM30 Digital Chronometer Technical Support Please contact Thommen Aircraft Equipment AG at the address given below for technical support. THOMMEN AIRCRAFT EQUIPMENT AG Hofackerstrasse 48 CH-4132 Muttenz Switzerland Phone: +41 (0)61 965 22 22 Email: tech-support@thommen.aero Internet: www.thommen.aero...
  • Page 16 Installation and Operating Manual CM30 Digital Chronometer DOCUMENT / EQUIPMENT DEFECT REPORT Aircraft Type Serial No. Manual No. Operator Date Reported By Contact Details Document / Equipment: Description of Defect: Corrective action taken to continue operation: Please send to: THOMMEN AIRCRAFT EQUIPMENT AG...

  • Page 17: List Of Abbreviations

    Installation and Operating Manual CM30 Digital Chronometer List of Abbreviations Abbreviation Description Aircraft Maintenance Manual ARINC Aeronautical Radio Incorporated Air Transport Association of America American Wire Gauge Centre of Gravity Component Maintenance Manual CM30 CM30 Digital Chronometer Dual In-line Package...
  • Page 18 Installation and Operating Manual CM30 Digital Chronometer Abbreviation Description Root Mean Square Recommended Standard Reset RTCA Radio Technical Commission for Aeronautics Receive Society of Automotive Engineers Service Bulletin SER No Serial Number ST/SP Start/Stop Thommen Aircraft Equipment AG Transmit Universal Time Coordinated...

  • Page 19: Description And Operation

    The Description and Operation (page block 1) of this manual gives a description of the functionality and operation of the CM30 Digital Chronometer. The CM30 Digital Chronometer is a Thommen Aircraft Equipment digital chronometer, type CM30, from a production line ‘Aircraft Clocks and Chronographs’.

  • Page 20: Specifications And Standards

    Installation and Operating Manual CM30 Digital Chronometer Specifications and Standards The CM30 Digital Chronometer complies with the latest civil and military avionic standards, as shown in the following tables: Reference Description EC/Commission Regulation (EC) No 1702/2003 Annex Part 21 -...
  • Page 21 Installation and Operating Manual CM30 Digital Chronometer Reference Description ARINC 665-1 ARINC Report - Loadable Software Standards Council Directives Council Directives 76/769/EEC - On the approximation of the laws, 76/769/EEC regulations and administrative provisions of the Member States relating to restrictions on the marketing and use of certain...

  • Page 22: Environmental Specifications

    Installation and Operating Manual CM30 Digital Chronometer Environmental Specifications The CM30 Digital Chronometer complies with environmental specifications as shown in the table below: Conditions Reference Category Test Description Illumination Qualification Illumination performance is measured from outside the CM30 perpendicular to the display area.

  • Page 23: Operational Limitations, Range And Tolerances

    68,000 operating hours, based on the average annual aircraft utilization rate being scheduled at 250 flying hours. With the battery removed, the CM30 Digital Chronometer has a shelf life of not less than 5 years. 31-22-20 DESCRIPTION AND OPERATION Revision: 1.2...

  • Page 24: Description

    The CM30 Digital Chronometer has an aluminium, 2” semi-ARINC housing with rounded edges. The maximum size of the CM30 is shown below. The front face of the CM30 is 3mm larger than the housing to fit flush against an aircraft instrument panel.

  • Page 25: Electrical Description

    Surface Finish The front and sides of the front bezel of the housing for the CM30 Digital Chronometer are finished in ‘Flat Black’ (FED-STD-595, colour number 37038). The rear side of the bezel and the main body of the housing, where the mounting clamp is attached, are not painted.

  • Page 26: Push Buttons

    Timer or to increase the selected value when the CM30 is in Set Time mode. Display Area The display area of the CM30 Digital Chronometer is 44mm wide and 29.5mm high. The display is a negative image liquid crystal display. The segments of the display have characters that are transparent/opaque, surrounded by black.

  • Page 27: Lighting Description

    CM30 Digital Chronometer Lighting Description In day mode the CM30 push button legends and display area segments are backlit in green colour on a black background (FED-STD-595, colour number 37038). The push button legends, if not illuminated from behind (backlit), are white (FED-STD-595, colour number 37925) on a black background (FED-STD-595, colour number 37038).

  • Page 28: Operation

    Installation and Operating Manual CM30 Digital Chronometer Operation This section gives a brief description of the operation of the CM30 Digital Chronometer. For detailed operating instructions, refer to the Flight Manual Supplement (CM30-FMS). Functional Description The CM30 Digital Chronometer provides a dual time zone clock display and several timer capabilities, including: •...

  • Page 29: Operation Modes

    CM30 Digital Chronometer Operation Modes After power is supplied to the CM30 Digital Chronometer (without user input or fatal start error), the CM30 starts to operate in the normal mode of operation (MoO). If the battery cannot provide enough power to ensure safe storage of CM30 values during aircraft power OFF time, such as time data and maintenance timer hours (MTH), a warning message is displayed in the bottom line of the display during the startup phase.
  • Page 30 Installation and Operating Manual CM30 Digital Chronometer INTENTIONALLY BLANK 31-22-20 DESCRIPTION AND OPERATION Revision: 1.2 Page 12 29/04/2022...

  • Page 31: Fault Isolation

    CM30 will automatically cease to operate and display an error message. If the error persists the next time power is applied, remove the CM30 and replace it with a new or repaired one from Thommen Aircraft Equipment AG (or an approved service facility).
  • Page 32 Installation and Operating Manual CM30 Digital Chronometer INTENTIONALLY BLANK 31-22-20 FAULT ISOLATION Revision: 1.2 Page 102 29/04/2022...

  • Page 33: Maintenance Practices

    Installation and Design Considerations Possibilities of Installation The customer decides on the installed location of the CM30 Digital Chronometer, where an electrical power supply is available and good attachment of the mounting clamp is possible. The CM30 Digital Chronometer is normally installed on the instrument panel of the aircraft cockpit/flight compartment.
  • Page 34 Installation and Operating Manual CM30 Digital Chronometer Electrical Connectors The CM30 Digital Chronometer is fitted with the following electrical connector (ref. Figure 201): Type Function MS3112E12-10P MIL-38999J Power, Signal, Control The CM30 Digital Chronometer requires the following mating electrical connector on the aircraft for installation (ref.
  • Page 35 Size 20 AWG wire shall be used (typically Raychem 55A0811-20-9) to interface the aircraft systems to the aircraft mating connector at the cockpit control panel installation position. Do not pass aircraft cable-shield through the connector to earth in the CM30 (except where grounded coaxial pins are used).
  • Page 36 SLAVE, connect the pins as shown in the Figure below. Pin J (TX DATA) on the MASTER CM30 will connect to pin K (RX DATA) on the SLAVE device(s). Pin K (RX DATA) on the MASTER CM30 will connect to pin J (TX DATA) on the SLAVE device(s).
  • Page 37 Installation and Operating Manual CM30 Digital Chronometer Mounting Requirements An ARINC mounting clamp (located behind the aircraft instrument panel) attaches the CM30 Digital Chronometer firmly to the hole in the instrument panel. Figure 204 – ARINC Mounting Clamp The Figure below shows the hole requirements in the aircraft instrument panel.
  • Page 38 Installation and Operating Manual CM30 Digital Chronometer ARINC Mounting Clamp Installation Procedure The CM30 Digital Chronometer is mounted on the aircraft instrument panel using an ARINC mounting clamp as shown below: Part Number Description 35 296 001 ARINC Mounting Clamp...
  • Page 39 CM30 using a bonding lead. The CM30 has a M5 threaded hole for this purpose on the rear of the housing. The depth of the threaded hole is 8mm.
  • Page 40 CM30 DIGITAL CHRONMETER WILL NOT FUNCTION ACCORDING TO THE SPECIFICATION AND THE WARRANTY WILL BE INVALID. The CM30 Digital Chronometer has a series of eight DIP switches, located behind the battery cover, that are used to customize the electrical features and option settings of the device. These are set by the manufacturer according to the specific requirements and must not be changed by the customer.
  • Page 41 OPEN and CLOSED status are different. Active-High The CM30 recognizes a resistance of 1 MΩ or more, or a voltage of 2 volts or less (measured from the timer start-switch signal input pin to the timer start-switch signal return pin) as OPEN status of the timer start switch signal.
  • Page 42 Lighting Mode Switch (Discrete Signal Input) The CM30 recognizes an external resistance of 1 MΩ or more or a voltage of 6 volts or more (measured from the lighting mode signal input pin to the lighting mode signal return pin) as OPEN status of the lighting mode signal.
  • Page 43 The battery must be removed from the CM30 when it is put into long-term storage. The CM30 Digital Chronometer is supplied in a storage box. This box is for long-term (more than 12 months) and short-term (less than 12 months) storage of the CM30, when it is not installed in an aircraft.
  • Page 44 Battery Replacement Do the following procedure to replace the battery (ref. Figure 209). Get access to the rear of the CM30 Digital Chronometer (1) (if necessary, remove the CM30 from the aircraft instrument panel, ref. Removal, page block 401). If necessary, disconnect the aircraft electrical connector from the electrical connector of the CM30 Digital Chronometer (2).
  • Page 45 Procedure Refer to Figure 401. Loosen the upper screw (pan head) (3) that holds the CM30 Digital Chronometer (1) in the clamp (5). Do not loosen the lower screw (countersunk head) (2). NOTE: The upper screw (pan head) (3) is for adjusting the tightness of the clamp (5) to the housing of the CM30 Digital Chronometer (1).
  • Page 46 Installation and Operating Manual CM30 Digital Chronometer Figure 401 – CM30 Digital Chronometer Removal / Installation 31-22-20 REMOVAL / INSTALLATION Revision: 1.2 Page 402 29/04/2022...
  • Page 47 Make sure that the identification label and qualification label (located on the sides of the housing) are readable and undamaged. Do a visual check of the equipment. Do not install the CM30 if you find any mechanical damage (for example, cracks or scratches on the display).
  • Page 48 If necessary, remove the protective caps from the electrical connectors of the aircraft and the CM30 Digital Chronometer (1). Make sure that the electrical connectors for the CM30 Digital Chronometer and the aircraft are clean and undamaged. Connect the CM30 Digital Chronometer (1) with the aircraft electrical connector (6).
  • Page 49 CM30 Digital Chronometer ADJUSTMENT / TEST General This section gives the necessary procedures to evaluate the operational efficiency of the CM30 Digital Chronometer. Operational Test An operational test is to make sure that the equipment fulfils its intended purpose. The task does not require quantitative tolerances.
  • Page 50 Installation and Operating Manual CM30 Digital Chronometer INTENTIONALLY BLANK 31-22-20 ADJUSTMENT / TEST Revision: 1.2 Page 502 29/04/2022...
  • Page 51 Installation and Operating Manual CM30 Digital Chronometer INSPECTION / CHECK General This section gives the information to do a visual inspection of the CM30 Digital Chronometer. Do the inspection before and after each flight. Inspection / Check References None Special Tools and Equipment...
  • Page 52 Installation and Operating Manual CM30 Digital Chronometer INTENTIONALLY BLANK 31-22-20 INSPECTION / CHECK Revision: 1.2 Page 602 29/04/2022...

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