Digital Techniques and Electronic Instrument System - Module 5 Training

Module 5 covers the following subjects – Electronic Instrument Systems, Data Conversion and Buses, Basic Computers and Processors. Fibre Optics, ESD, Software Management, EM Environment and Typical Electronic/Digital Aircraft Systems


Detailed Content / Topics – The following Subjects will be addressed -

1. Electronic Instrument Systems

– Typical systems arrangements and cockpit layout of electronic instrument systems.

2. Numbering Systems

– Numbering systems: binary, octal and hexadecimal;
– Demonstration of conversions between the decimal and binary, octal and hexadecimal systems and vice versa.

3. Data Conversion

- Analogue Data, Digital Data; Operation and application of analogue to digital, and digital to analogue converters, inputs and outputs, limitations of various types.

4. Data Buses

– Operation of data buses in aircraft systems, including knowledge of ARINC and other specifications. Aircraft Network/Ethernet.

5. Logic Circuits

– Identification of common logic gate symbols, tables and equivalent circuits; Applications used for aircraft systems, schematic diagrams.
– Interpretation of logic diagrams.

6. Basic Computer Structure

– Computer terminology (including bit, byte, software, hardware, CPU, IC, and various memory devices such as RAM, ROM, PROM);
– Computer technology (as applied in aircraft systems).
– Computer related terminology;
– Operation, layout and interface of the major components in a microcomputer including their associated bus systems;
– Information contained in single and multi address instruction words;
– Memory associated terms;
– Operation of typical memory devices;
– Operation, advantages and disadvantages of the various data storage systems.

7. Microprocessors

– Functions performed and overall operation of a microprocessor;
– Basic operation of each of the following microprocessor elements: control and processing unit, clock, register, arithmetic logic unit.

8. Integrated circuits

– Operation and use of encoders and decoders;
– Function of encoder types; Uses of medium, large and very large scale integration.

9. Multiplexing

– Operation, application and identification in logic diagrams of multiplexers and demultiplexers.

10. Fibre Optics

– Advantages and disadvantages of fibre optic data transmission over electrical wire propagation;
– Fibre optic data bus;
– Fibre optic related terms;
– Terminations;
– Couplers, control terminals, remote terminals;
– Application of fibre optics in aircraft systems

11. Electronic Displays

– Principles of operation of common types of displays used in modern aircraft, including Cathode Ray Tubes, Light Emitting Diodes and Liquid Crystal Display.

12. Electrostatic Sensitive Devices

– Special handling of components sensitive to electrostatic discharges;
– Awareness of risks and possible damage, component and personnel anti-static protection devices.

13. Software Management Control

– Awareness of restrictions, airworthiness requirements and possible catastrophic effects of unapproved changes to software programmes.

14. Electromagnetic Environment

– Influence of the following phenomena on maintenance practices for electronic system:
– EMC-Electromagnetic Compatibility EMI-Electromagnetic Interference HIRF-High Intensity Radiated Field Lightning/lightning protection.

15. Typical Electronic / Digital Aircraft Systems

General arrangement of typical electronic/digital aircraft systems and associated BITE (Built In Test Equipment) such as:

– For B1 and B2 only: ACARS-ARINC Communication and Addressing and Reporting System EICAS-Engine Indication and Crew Alerting System FBW-Fly-by-Wire FMS-Flight Management System IRS-Inertial Reference System;
– For B1, B2 and B3: ECAM-Electronic Centralised Aircraft Monitoring EFIS-Electronic Flight Instrument System GPS-Global Positioning System TCAS-Traffic Alert Collision Avoidance System Integrated Modular Avionics Cabin Systems Information Systems.

Digital Techniques and Electronic Instrument System - Module 5 Training

  • This training is being provided online