ITI's which provides courses for Mechanic and Operator Electronic Communication Systems

Sem. I

Sr. No.

Subjects of Study

Trade Practical

Trade Theory

1

(­Visit to the Institute) (­Care & Safe work habits, safety precaution to be demonstrated. Institute AC distribution.) (­Elementary First Aid Practice.) (Practice for making good earthing.)

(­Organisation of the institute of various trades & function) (Introduction to National Vocational Training System and different schemes and link them.) (Types of work, responsibility to be undertaken, incentives and future) (Safety precaution to be observed in the trade during Operation and Practice in workshop.)

2

Visit to workshop or Industry/ organization using or manufacturing the wireless equipment and demonstrate in brief to motivate Trainees; or Video Show.

Introduction of Wireless & communication, electronics and telecommunication system. Radio Regulation & Communication, CCIR Recommendation. Introduction to Modern Wireless Communication and area of application.

3

Demonstrate the various Hand tools as per tool List and allow the Trainees in Group to discuss and recognize the tools.

Identification, specification, uses and maintenance of hand tools.

4

Identification of conductor Insulators, Break and Continuity Test. Use of Multimeter for voltage and current measurement earth resistance measurement by Earth Tester.

Matter: Conductor, semiconductor insulators, General Electric Principles, Electronic Theory, Electrical Units, Ohm's Law, Ampere's Law, KCL and KVL Law and their application Superconductivity.

5

Identification of different type of Resistors (Fixed & Var) calculation of Resistance using colour code, confirm through multimeter, Practice measurement by Multimeter, Calibration of Standard Resistance Demonstration of Digital and Analog Multimeter.

Resistivity, Resistance of conductors, Temperature effect, Skin effect, conductance, Resistor Parallel and series combination. Different type of Resistor, (fixed and variable) and their uses.

6

Identification of different types of indicators used, identification of Transformer primary & secondary, Testing of coil and setting. Demonstration on self and mutual inductance.

Inductance, Units of inductance, inductance in series and parallel, coefficient of coupling, Hysterisis and Eddy current losses, Principle of Transformer, Construction use of core, Transformer losses, Importance of Matching, step-up, step-down, Principles, Cimple calculations of Turns Ratios, Power primary and secondary.

7

Identification of types of condensers used and colour code, their testing and specification. Calibration of St. Capacitance Demonstration on a Radio Receiver PCB for identification of different type of capacitors used.

Explanation of capacitance and capacitive reactance, Dielectric constants, Types of capacitor, Permittivity, Dielectric strength, Break down voltage, capacitance in series and parallel.

8

Measurement of Low frequency signal in CRO and explain peak RMS and Average value, calculate Frequency.

Peak, RMS, Instantaneous, Average Value, Phase Difference, Vector Introduction, Reactance & Impedance, Powder factor, Reactive and Resistive Power, Frequency, Time Period, Different Type of Waves, Eddy Current.

9

Demonstration on the properties of P.M. Use of Magnetic Needle Converting a magnetic material into a Magnet by a Bar magnet.

Magnetism & Electromagnetism, Properties of magnetic Material & Ferities, Magnetic field, Magnetic Flux Density, Permeability, Magnetic Motion

10

Preparation of Solenoid, Preparation of Electromagnet for calling Bell/ Buzzer, EM Relay, Testing of Relay, Rewinding and Repair.

Force, Magnetic Effects on Electric Current, Magnetic fields, Principle of Relays, types Adjustment/ Maintenance & Common faults in Relays, their uses in communication circuits.

11

Identification of Different of Tank circuit used and design. Study of Behaviour of L and R in series.

Explanation of resonance, Series and parallel resonance, Circuit. Elements, natural resonance, tuning, voltage, gain, Anti-resonance circuit. Uses in electronic circuits

12

Study of Different Parts of Alternator and Repair.

Alternators, Principle and Constructions, Single and three Phase A.C. System, Eddy current.

13

Testing of Primary and Secondary cells, Specific Gravity and Voltage measurement, Preparation Electrolyte, Charging of Battery. Demonstration on SMPS Unit Demonstration on Solar Panel.

Explanation of cells, primary & Secondary Cells, General Principles, Construction of Lead Acid, Nickel cadmium, Nickel Iron cells, Electrolyte, Initial charging & Discharging Needs & Methods, Specific Gravity, Defects & Remedies, Maintenance free Tubular battery, Solar cells, SMPS based battery charger, Lithium Cells

14

Demonstration of MC and MI, voltmeter, Ammeter and Watt Meter CRO, Signal Generators, multimeters, Counter etc. Servicing of Multimeter (Analog) Multimeter.

Moving Coil, Moving Iron type, Different type of Transducers. VTVM, FET Multimeter, DMM etc

Project Work

Sem. II

Trade Practical

Trade Theory

1

Video Films on Semiconductor Theory. Identification of Various Study and calculation of various Semiconductor devices, Testing by Multimeter, Tester. Soldering and Desoldering Practice. Characteristic Check of Diode, Transistor. Identification of components in a PCB. (Group) Transistor biasing arrangement Application of Transistor as amplifier, Oscillator, etc and testing.

Semi-conductor Theory, Type of Devices and Symbols and uses. Characteristics of Diodes, Different type of Rectifiers along with different Filter. AF/IF Detectors. PNP and NPN Transistors, Symbols, different type of amplifiers & its classification, Oscillators, Multivibrators.

2

Characteristic Check of various Devices. Testing in actual application by using trainer. Demonstration of characteristics and applications of OPAMP by using OPAMP Trainer. Explanation of characteristics of UJT, FET, MOS, CMOS, SCR, SCS, DIAC, TRIAC, IC, SMD.

ESD, etc. and application memory devices RAM, ROM, EPROM, etc. Optical Devices, RF Devices, Crystal, PCBs Single and double Layer, PTH and Multilayer and application Electronic Component Packages. Differential Amplifier, Basic OP-AMP Circuit - -Inverting and Non-Inverting Amplifier, Integrator and Differentiator, Limitation of OP-AMP High Current, Power and Voltage application, wave shaping Circuits Active filter circuits.

3

Characteristic Check of different Rectifier Circuits. Designing and Mounting, Soldering for different. Rectifier circuit and Testing (Individual). Demonstrate a SMPS power supply unit and identify, Trace Circuit and conduct tests by CRO and Multimeter. Design a SMPS circuit and solder components and test. Demonstration of a UPS and identify circuits, trace path, test. Demonstration of battery charger and practice testing of power transformer.

Half wave, Full wave Rectifier Bridge Rectifier with different filter combination, HT and LT power supply, Voltage Regulation Switch Mode Power Supply (SMPS), UPS, Battery Charger, RFI/EMI filter, Isolation Transformer Electro-Optical Coupler. Fault Clearing process, Switch Gears, Reactors, HRC Fuse, Circuit Breakers, Protective Relays, Lightning arrester etc. Linear and switching regulators.

Project Work

Sem. III

Trade Practical

Trade Theory

1

Soldering and de-soldering practice continue. Both manual and automatic PCB repair, handling of ESD devices, bad and good solder. Check video film for SMD soldering.

Theory of soldering, different type soldering and de-soldering technique for electronic components/SMD automatic soldering, wave soldering, DIP soldering, PCB wiring.

2

Testing of GATES, FF digital logic etc. And draw the truth system trainer tables. Conduct various tests for microprocessor using trainers. Conversion of analog to digital and vice versa.

Fundamentals of digital electronics, Boolean, function, coding, logic gates, flip-flops, TT, count etc. analog to digital conversion and vice versa, multiplexer/demultiplexer, ICs.

3

Check the output of function generator for different modulation by CRO and observe pattern. Design simple modulator circuit and testing. Analog to digital conversion sampling principle check by using model.

Basic principle of modulation, amplitude, phase and frequency modulation, digital modulation: frequency shift keying (FSK), ASK, BPSK, GPSK, etc. different type of modulator both analog and digital and their use. Pulse code modulation, PTM, PWM, PAM, FDM/TDM multiplexing.

4

Data transfer and Receive Practice, Service Documents. Demonstration on different Data communication device and their interconnectivity, Protocols, Call signal Rules.

Basic Data Communication Concept, Data Security, Modem, Email, Internet Connectivity, Data Communication through NIC, INET, GPSS, VSAT. Data Coding: ASCII, EBCDIC etc. Introduction to PC I/O Operation and instruction Interfaces and Peripherals LAN, WAN, Internetwork Processor: Bridges, Router, Hub, and Gateway.

Sem. IV

Trade Practical

Trade Theory

RF-RF Response Test. Checking and setting AGC gain Margin. Field intensity Measurement. Orientation of antenna both Trans and Receive for max receive signal strength. AF-AF response Test.

Characteristic of Radio waves, Ionosphere, Trophoshere, VLF, LF, MF, HF and VHF Propagation, Ground, Sky and space waves. Properties of different reflecting Layers, Skip distance, MUF, Fading, Critical Frequency, Effect of Rain and sunspot cycle, use of Day and Night Frequency, Principle of Line of sight Communication and factor affecting this.

Study of different type of Aerials. Installation Aerials and connecting feeder cable, establishing link. Study of Vertical Aerial and different loop aerials. Installation procedure of Dish TV antenna. Study of Different connectors and matching. Mast/Tower Construction.

Principle of Radiation, Interception of Radio Signal, Polarization of Waves, Radiation, Resistance, Bandwidth, Effective height, Ground Effects, Aerial Capacitance & Reactance, Distribution of current & Voltage in aerial, Impedance, SWR, Different type of Aerials : Dipole, Folded Dipole, Loop Aerial Unidirectional, Bidirectional and Omni directional antenna, UHF Antenna, Dish Antenna.

Identification of Different stage of a simple Radio Tx and Receiver. Identify the different components and circuit used. Testing of different amplifier and characteristic measurements. Testing of different type of microphones and constructional feature.

Basic Radio Transmission and Reception Concept using Block Diagram RF stage, IF stage, AF Stage. Class-A, Class-B, Class-AB, Push-Pull amplifier, Feed Back, different types of coupling, Cascade amplifiers, Audio filter, matching transformer etc. Different Types of Microphones and speaker, their application and theory.

Testing and monitoring of Tx. Power and Freq. Tuning of Tank circuits at different stages, Trans, Local oscillator tuning for power and output freq. Degree of modulation setting, drive signal setting at different stages. Adjustment.

Transmitter Theory, Typical Transmitter used for CW, MCW, ISB, DSB, SSB, and Packet Mode, Modulators used. Function of various stages, operation and Monitoring, Metering and safety Devices, adjustment and Measurement.

Study of power supply Circuit used.

Matching circuit for antenna for Max. Power. Reflected Power and SWR measurement. Electrical Faults and alarm in transmitter.

Study of Receiver controls etc. Receiver Tuning and Receiving Signal Monitoring. Identification of different internal circuits and Component and their settings.

Frequency changing and detection Types of mixer, Necessity of Local oscillator and its Generation. Stages of Mixing, Image frequency rejection AM, FM & Digital Signal Detectors, Demodulator/Discriminators, LNA etc Noise Selectivity, Fidelity, AF Response etc.

Study component location of Direction Finder. Study the panel of Direction Finder. Tuning and hearing Practice on the Direction Finder.

Landing System, OMEGA Systems. Block diagram Practice for different systems. Study & calculation of various parameters of specification of Navigation equipment.

Demonstration on different telephone instruments. Identification of different components in the instrument probable faults and repairing.

Identification of different type of Cable and use; Jointing Practice

Line wire Practice with TB Termination. Demonstration on Trans-receiver Operation and Maintenance. Demonstration on Cordless and mobile phones, Maintenance and repair. Demonstration on cable TV and manual tracking of Antenna. Industrial visit to be arranged.

Cordless Telephone, mobile Telephone System Working Concept, and users equipment. Basic Digital enhanced cordless Telephone (DECT) Personal Handy Phone System (PHS). Introduction to Satellite Phones. UHF/VHF/HF Comm. System (Digital/Analog), Microwaves Communication System, V-SAT.

Demonstration on FM Transmitter and Receiver, Walkie Talkie. LCD TV/DVD AND Remote Control system.

Police Wireless Equipment, Wireless System at Air Operation, Walkie-Talkie, FM Transmitter and Receiver, Air to air and Air to ground Communication. Data Modem for wireless. LCD TV/DVD AND Remote Control system.