AIMS
To provide the students with an opportunity to develop knowledge, skill and attitude in the area of television engendering with special emphasis on:
• Factors of television system
• Fundamentals of television signal
• TV cameras, picture tube, transmitters and receivers
• Television circuit
• Organization of television studio
• Video recording & play back (VHS, Bmax U-matic , video 2000, DV and HDV)
• Features of remote control
• Satellite home receiving system and its networking
• Cable Television, teletext broadcast services.
• Digital Television –Transmission and Reception.
• Advanced Television systems and digital studio equipments
• TV receiver Alignment and Servicing.
SHORT DESCRIPTION
Factors of television system, fundamentals of television signal, TV cameras, picture tube, transmitters and receivers, Television circuit, organization of television studio, video recording & play back (VHS, Bmax U-matic , video 2000, DV and HDV), features of remote control, satellite home receiving system and its networking, cable, Television, teletext broadcast services, digital Television –Transmission and Reception, advanced Television systems and digital studio equipments, TV receiver Alignment and Servicing,
DETAIL DESCRIPTION
Theory:
1 Understand the factors of television system.
1.1 Define the terms field, frame, persistence of vision, flicker, picture element, aspect ratio
1.2 Describe the different modern scanning methods
1.3 List the specification of CCIR standard used in Bangladesh.
1.4 Compare PAL, SECAM, NTSC and ATSC color TV systems.
1.5 Calculate the required channel band width for transmission of television signal.
1.6 Describe three color theory.
1.7 Define the terms hue, brightness, saturation, luminance, chrominance, color temperature, peak white and gray color.
1.8 Describe the TV applications.
2 Understand the fundamentals of television signal.
2.1 List different components in the composite video signal (CVS).
2.2 Explain the need for sync, blanking and equalizing pulses.
2.3 Calculate the values of amplitude luminance and chrominance signals for different colors bar signal at different saturations.
2.4 Describe the reason for employing AM for vision and FM for sound.
2.5 Describe the need for vestigial side band (VSB) transmission in television broadcasting.
2.6 Define weighted and un-weighted signals.
2.7 Describe the exact value of subcarrier frequency for color television.
3 Understand the working principles of TV cameras, picture tube, transmitters and receivers.
3.1 Explain the principle of operation of vidicon, plumbicon, silicon diode array vidicon, solid state image scanner and saticon camera tube.
3.2 Describe the basic principle of operation of typical black and white (B/W) and color TV transmitters with block diagram.
3.3 Describe the basic principle of operation of B/W and color TV receiver with block diagram.
3.4 Describe the construction and operation of B/W and color picture tubes.
4 Understand the concept of television circuits.
4.1 Describe the principle of electromagnetic deflection system.
4.2 Describe the operations of video detector and amplifier.
4.3 Describe the operations of ADG, ACC, burst amplifier and color killer circuits.
4.4 Describe the sound section of TV receiver.
4.5 Describe the control panel of television receiver with diagram.
5 Understand the organization of television studio.
5.1 Mention the basic audio, video sources and controls in the studio.
5.2 Describe typical broadcast studio system with block diagram.
5.3 Describe the function of each stages of a television studio.
5.4 Describe tele scene, slide, background superimposition, taylor etc.
5.5 Describe audio dubbing and video editing.
6 Understand the features of video recording & play back (VHS, Bmax U-matic , video 2000, DV and HDV)
6.1 Describe the basic principle of different types of video formats.
6.2 Describe the basic principle of operation of VCR & VCD/DVD with block diagram.
6.3 Describe the process of interconnecting modern VCR & VCD/ DVD to ancillary equipment with diagram.
6.4 Mention the system control process of VCR & VCD/DVD.
6.5 Mention the adjustment and alignment procedure of VCR & VCD/DVD.
6.6 Describe the typical VCR & VCD/DVD faults diagnostic procedures.
6.7 Describe the operation of CCD, Beta CAM and DV CAM color video camera.
6.8 Describe video TV games with block diagram.
6.9 Describe the video conferencing system with block diagram.
7 Understand the features of remote control.
7.1 Describe the basic principle of command encoding system for remote control.
7.2 Describe the basic principle of command decoding & system control (such as ON/OF, Brightness, volume, contrast, color program etc.)
7.3 Describe the operating procedure of universal and programmable learning remote control.
8 Understand the concept of satellite home receiving system and its networking .
8.1 Describe satellite home receiving system with simplified block diagram.
8.2 List different parts and equipment associate with satellite dish installation and alignment.
8.3 Explain the procedure of parabolic dish installation and alignment.
8.4 Describe multi channel distribution system for cable operators with block diagram.
8.5 List different parts and equipment used in multi channel distribution system.
9 Understand concepts of cable Television, teletext broadcast services.
9.1 Describe the concepts of CCTV system.
9.2 Describe the different signal sources of cable TV systems.
9.3 Describe the processing and distribution system of cable TV.
9.4 Describe the Bi-directional networks.
9.5 Describe the scrambling of TV signals.
9.6 Describe the cable signal converting process.
9.7 Describe the teletext Picture and signal coding.
9.8 Describe the Teletext TV receiver and Teletext intext.
9.9 Describe video data and TV games.
10 Understand the concept of digital Television –Transmission and Reception.
10.1 Describe the digital system hardwires of digital television.
10.2 Define signal Quantization and encoding
10.3 Describe the digital satellite Television with block diagram.
10.4 Mention the Direct-to-Home satellite television.
10.5 Describe the operation of Digital TV receiver.
10.6 Briefly describe the merits of digital TV receivers
10.7 Describe the digital terrestrial Television (DTT).
11 Understand the concept of advanced Television systems and digital studio equipments
11.1 Describe the basic principle of Stereo sound systems.
11.2 Define Projection Television
11.3 Describe the Flat Panel Display TV Receivers with block diagram.
11.4 Describe the operation of three dimensional (3-D) Television picture
11.5 Define Extended definition Television (EDTV) and High definition Television (HDTV)
11.6 Mention the digital Equipment for Television studios
11.7 Describe the new generation Colour receivers.
12 Understand the concept of TV receiver Alignment and Servicing.
12.1 Describe the operation of TV receiver alignment and servicing equipments (Such as multi-meter VTVM, video pattern generator, oscilloscope, sweep generator, Marker generator, Vectorscope, high voltage probe) .
12.2 Describe the alignments of monochrome and colour TV receiver
12.3 Trouble shooting procedure for monochrome and colour television.
12.4 Describe the safety precaution in TV servicing
12.5 Describe the adjustments techniques of color TV, receiver using remote control.
12.6 Describe the Television receiver antennas (Yagi)
Practical:
1 Perform the identification of physical layout, location of stages and major components of a Black and White (B & W) receiver.
1.1 Select a B & W TV receiver with circuit diagram and required tools & materials.
1.2 Observe the physical layout.
1.3 Identify the location of stages and component numbers.
1.4 Identify the location of major components in the physical circuit.
2 Perform the reassemble of CRT and allied parts of a B & W TV receiver.
2.1 Select a B & W TV receiver with required materials, tools and equipment.
2.2 Observe the mechanism of mounting CRT.
2.3 Dismount magnet, coil and earth straps.
2.4 Re-assemble the parts again.
2.5 Adjust the controls for the best performance.
3 Study the process of generation and addition of colors with a color bar pattern generator.
3.1 Select a color TV receiver, a color bar pattern generator and required materials.
3.2 Connect the pattern generator to the color TV receiver.
3.3 Switch on the power supply for each of the equipment.
3.4 Produce red, green and blue color on the screen.
3.5 Add the colors to produce yellow, cyan, magenta and white.
4 Locate the stages, major components and signal flow in a color TV receiver.
4.1 Select a color TV receiver with a circuit diagram.
4.2 Observe the circuit diagram and the circuit board.
4.3 Observe the layout of the components.
4.4 Note the stages and identify the components numbers.
4.5 Determine the stages of the major components.
4.6 Observe the signal flow in the PCB in accurdance with the circuit diagram.
5 Perform the identification of the front panel control and their adjustments in color TV receiver.
5.1 Select a color TV receiver and required tools & equipment.
5.2 Identify various front panel control knobs and their circuit locations.
5.3 Adjust the knobs in different positions.
5.4 Observe the performance for various adjustments.
5.5 Identify the best possible adjustments.
6 Perform the reassemble of CRT and allied parts in a color TV receiver.
6.1 Select a color TV receiver and required tools, equipment & materials.
6.2 Dismantle the picture tube and its allied parts.
6.3 Identify different parts and connections of color TV receiver.
6.4 Reassemble the tubes and allied parts.
6.5 Observe the operation of color TV receiver.
6.6 Adjust the controls for the best performance.
7 Study the operation of external control in a video cassette recorders (VCR).
7.1 Select a VCR and required tools & materials.
7.2 Connect the power supply.
7.3 Change the controls.
7.4 Observe the performance.
7.5 Set up the controls for proper operation.
8 Study the operation of VCR/VCD.
8.1 Select a VCR/VCD and required tools & equipment.
8.2 Compare the block diagram with VCR/VCD.
8.3 Compare major components in different stages.
8.4 Observe the tap transport mechanism.
8.5 Connect the VCR/VCD receiver.
8.6 Load the cassette.
8.7 Observe the recording and playing.
9 Study the operation of video camera.
9.1 Select a video camera and required tools.
9.2 Load the cassette.
9.3 Observe the recording and playback system.
10 Study the operation of satellite home receiver.
10.1 Select required tools and materials.
10.2 Observe the function of its different controls and function knobs.
10.3 Study different stages of satellite home receiver.
11 Study different parts of satellite dish antenna.
11.1 Select a satellite dish antenna.
11.2 Identify different parts of the dish antenna.
11.3 Assemble and disassemble the dish antenna.
12 Study the operation of LCD/LED HDTV
12.1 Select a LCD/LED TV Receiver
12.2 Observe the function of its different controls.
12.3 Observe the different function of its remote control.
12.4 Identify different stages of LCD/LED TV
Powered By: BTEB
