Midcontinent MD23-342 Installation Manual And Operating Instructions
  1. Manuals
  2. Brands
  3. Midcontinent Manuals
  4. Monitor
  5. MD23-342
  6. Installation manual and operating instructions

Midcontinent MD23-342 Installation Manual And Operating Instructions

Flex custom function display
Hide thumbs
Table of Contents

Advertisement

Quick Links

Manual Number
9019161
Revision C
August 18, 2023

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the MD23-342 and is the answer not in the manual?

Questions and answers

Related Manuals for Midcontinent MD23-342

Summary of Contents for Midcontinent MD23-342

  • Page 1 Manual Number 9019161 Revision C August 18, 2023...
  • Page 2 FOREWORD This manual provides information intended for use by persons who, in accordance with current regulatory requirements, are qualified to install this equipment. If further information is required, please contact: Mid-Continent Instruments and Avionics Attn: Customer Service Dept. 9400 E. 34 St.
  • Page 3 REVISION HISTORY Date Detail Approved 09/09/2020 Production release. Added data for IMU (-3) configuration. Added NVIS 10/18/2022 versions. Added a feature cross reference table by unit version (1.3). Added QR code, page 2. Updated TSO compliance for addition of C6e. Corrected multiple Table references.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS SECTION 1 GENERAL DESCRIPTION Introduction Technical Specifications SECTION 2 PRE-INSTALLATION CONSIDERATIONS Cooling Equipment Location Routing of Cables Limitations Modification SECTION 3 INSTALLATION PROCEDURES General Information Parts List Cable Harness Pneumatic pressure Connections Mounting Installation Completion SECTION 4 OPERATION General Function User Interface...

  • Page 5: General Description

    SECTION 1 GENERAL DESCRIPTION INTRODUCTION The model MD23 series FLEX Custom Function Display (“CFD”) is a panel-mounted instrument capable of displaying various inputs in a configurable graphical presentation. FLEX is an off-the- shelf solution that is FAA and EASA TSO-approved with Level A design assurance software certification.

  • Page 6: Technical Specifications

    TECHNICAL SPECIFICATIONS Electrical Attributes Input Voltage 10-32 VDC Input Power 4 watts (0.14A @ 28VDC) Lighting Input 5, 14, or 28VDC or automatic photocell control Battery Backup (clock function only) Rechargeable coin cell (qty 1) Table 1.1 Data Inputs and Outputs* 0V to 28VDC, ±0.050V accuracy, impedance >50Kohms Analog Input...
  • Page 7 Physical Attributes Weight 0.4 pounds (0.17 kg) 2.43” x 2.43” x 1.0” (HxWxD) Dimensions 26-pin D-Sub and backshell MCIA p/n 9019162-1 Mating Connectors Pneumatic fittings MCIA p/n 9019162-2 Rear Panel Mount with (4) #6-32 screws; Mounting 2.25 inch round bezel Table 1.4 IMU Performance Limits (-3) Attitude (-3)

  • Page 8: Pre-Installation Considerations

    SECTION 2 PRE-INSTALLATION CONSIDERATIONS COOLING No external cooling is required. The unit will generate some heat as a function of normal operation. Installation in an area that is exposed to extreme heat or restricted airflow can reduce the expected life of the product. Mounting the unit to a metal surface can help reduce the effects of temperature on the unit but is not required.

  • Page 9: Modification

    aircraft installation conditions are within the TSO standards, specification of the article, and deviations as listed above. TSO articles must have separate approval for installation in an aircraft. The article may be installed only according to 14 CFR part 43 or the applicable airworthiness requirements.

  • Page 10: Installation Procedures

    SECTION 3 INSTALLATION PROCEDURES GENERAL INFORMATION IMPORTANT: READ THIS ENTIRE SECTION PRIOR TO STARTING INSTALLATION! This section contains interconnect diagrams, mounting dimensions and other information pertaining to the installation of the MD23 FLEX Custom Function Display. For specific pinout that uniquely applies to each custom application, please refer to your custom User Guide, or to the CID Requirements associated with your application.
  • Page 11 3.3.1 WIRE GAUGE SELECTION Wire gauge should be 22 AWG. Use of PTFE, ETFE, TFE, Teflon, or Tefzel insulated wire is recommended for aircraft use per MIL-DTL-16878 or equivalent. Additionally, for data signals associated with ARINC 429 inputs and outputs, all MIO signals, and RS- 232/422/485, shielded twisted pair wiring per M27500 or equivalent is recommended (and required to meet the qualifications associated with the product certification.) 3.3.2 CONNECTOR PINOUT...
  • Page 12 Connector Pinout (-1, -2) Pin Description Description Power Return ARINC In #1 B ARINC Out A Multi I/O #8 ARINC Out B ARINC In #2 B Dim Input Multi I/O #11 ARINC In #1 A Thermocouple + ARINC In #2 A Power In (+10-32VDC) RS 232 In Multi I/O #2...
  • Page 13 3.3.3 CABLE HARNESS ASSEMBLY To assemble the aircraft cable harness, refer to the following instructions and Figure 3.2: Install a pin/socket as supplied in the Connector Kit using an appropriate crimping tool for each wire in the aircraft cable harness. Be sure to make the harness long enough to remove the unit from the panel without stressing the harness.
  • Page 14 Cable Harness Kit Parts Item Qty Description DSub, 26pin HD, with #22 contacts Backshell Backshell blanking plate Spring Clip Shield(s) Slide Lock Screw, Pan-head Phillips Grounding Wire Cable Clamp Screw, Flat-head Phillips, Long Backshell Cover Screw, Flat-head Phillips, Short Figure 3.2 Mating Cable Harness Assembly Manual Number 9019161 Revision C, August 18, 2023...

  • Page 15: Pneumatic Pressure Connections

    PNEUMATIC PRESSURE CONNECTIONS For the MD23 versions with pneumatic inputs, the connector kit supplied with the unit contains two (2) pneumatic quick disconnect fittings. These fittings are specific to the connections on the rear of the unit and are required for proper operation. The two fittings are marked with “S” and “P” on the case.

  • Page 16: Installation Completion

    INSTALLATION COMPLETION After installation of cabling and before installation of the equipment, ensure that power is applied only to the pins specified in the interconnect diagram. Prior to operating the unit in the aircraft, verify the basic operation of the unit and conduct a standard leak check of the pitot/static system per the aircraft maintenance manual or industry practice.
  • Page 17 Figure 3.4 Panel Cutout Manual Number 9019161 Revision C, August 18, 2023...

  • Page 18: Operation

    SECTION 4 OPERATION IMPORTANT: READ THIS ENTIRE SECTION PRIOR TO OPERATING THE UNIT IN FLIGHT! The MD23 FLEX Custom Function Display is a unique new type of avionics equipment with a Patent Pending software concept. It utilizes a highly capable and certified hardware and software platform that can be customized to receive, output, and display a wide array of information.

  • Page 19: User Interface

    Power On Config Introduction Hold Menu Knob Screen PRE-FLIGHT MODE Normal Operation Hold User Config Options Menu Menu* Knob User Options Menu* CONFIG MODE FLIGHT MODE Figure 4.1 System Navigation Map USER INTERFACE The MD23 FLEX CFD is designed for simple, intuitive operation for ease of use for all custom applications.

  • Page 20: Pre-Flight Mode

    4.2.2 MENU OPERATION The menu parts are defined below: Menu title white text on a blue background at the top of each menu Current item cursor highlighted by a white box and green background Selectable items any selectable item on the menu is indicated with white text Unavailable items information only / unavailable options are indicated with gray text Menu operation throughout the MD23 is simple and intuitive:...

  • Page 21: Flight Mode

    FLIGHT MODE In Flight Mode, the unit operates normally according to the function of the CID and displays the primary graphical presentation. Operational details of specific custom applications are provided separately as a User Guide that serves as a compliment to this manual. The Options Menu, with manual brightness adjustment and the User Options Menu, is accessible in Flight Mode.
  • Page 22 4.4.1.1 BRIGHTNESS The display brightness can be controlled with either an external voltage or automatically using the integrated photocell. See Section 4.4 for further details. The Brightness feature in the Options Menu allows the user to manually adjust or offset the display brightness up or down regardless of the current level set by the External or Internal (automatic) brightness control method.
  • Page 23 4.4.1.3 INFO While in Flight Mode, the Info menu is available to the pilot or cockpit crewmembers. It offers read-only information regarding the current software version and CID version. Pressing the Control Knob will revert to the active display. (Figure 4.5) Figure 4.5 Info Menu 4.4.1.4 EXIT The Exit action allows the user to manually close the Options Menu and return to the active...

  • Page 24: Configuration Mode

    CONFIGURATION MODE Configuration Mode is used by the installer to configure aircraft specific requirements that are not accessible in flight. This includes critical flight parameters that contribute to the safe and certified operation of the unit and the aircraft as well as user preferences. Several safeguards are in place to prevent a user from ever accessing the Configuration Mode while in flight.
  • Page 25 4.5.1.1 DIMMING CONTROL The Dimming Control setting allows the installer to select the source of dimming control. It can be an “EXTERNAL” source, typically the aircraft’s adjustable lighting bus, or it can use the integrated photocell built into the unit (“INTERNAL” option) which senses the ambient light conditions and adjusts the display brightness/dimming automatically.
  • Page 26 4.5.1.2 DIMMING CURVE The Dimming Curve feature allows the installer to customize the response to the Dimming Control input, whether Internal or External, over its range of operation. To do this, a desired brightness can be assigned for multiple points across the input range to produce a unique dimming scheme that most closely matches the other instruments in the panel and the pilot’s preferences.
  • Page 27 Dimming Curve (continued) The best method for setting the dimming curve is to simulate the range of lighting conditions while adjusting the display brightness. This is best done after installation, in the actual aircraft instrument panel, but can be simulated in various environments. Dimming Curve Programming Process: (after selecting the Dimming Curve menu item) 1.
  • Page 28 4.5.2 UPDATE The Update action initiates a search on an USB flash drive installed in the USB Program Port on the rear of the unit. (Figure 3.3) Step-by-step instructions on performing an update can be found in Section 5. The unit will search for a standard file name on the USB flash drive that represents either the unit operating software or a CID file.
  • Page 29 4.5.3 USER CONFIGURATION The User Configuration Menu provides selectable options associated with the loaded CID that are intended to be configured during installation. It is only available and active if the specific design of the CID includes it (and gray/unavailable otherwise). See the applicable User Guide associated with the loaded CID for specific details.

  • Page 30: Conformance

    SECTION 5 CONFORMANCE INSTRUCTIONS FOR CONTINUED AIRWORTHINESS 5.1.1 PRESSURE SYSTEM VERIFICATION If the MD23 is configured to accept and display data associated with a static, pitot, or other pressure source, some aviation regulations may apply to inspect and test for accuracy on a regular basis.
  • Page 31 PREPARATION 1. Download the approved software and/or CID file to the root directory of a USB flash drive. The drive must be formatted as FAT or FAT32, up to a maximum size of 32GB. The downloaded filename may be changed, but must retain the original extension (for example “.muf”...

  • Page 32: Environamental Qualification Statement

    ENVIRONMENTAL QUALIFICATION STATEMENT MODEL NUMBER: MD23 Series PART NUMBER: 6420023-( ) DESCRIPTION: 2-inch Custom Function Display CERTIFICATION: FAA TSO-C2d (Type B), C3e, C4c, C6e, C8e, C10c, C106, C113b, C201 MANUFACTURER: Mid-Continent Instrument Co., Inc. ADDRESS: 9400 E. 34 St. North, Wichita, KS 67226, USA SPECIFICATION: Test Specification (TS) 723 Test Data Sheet (TDS) 723 STANDARD:...

This manual is also suitable for:

Md23

Table of Contents