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Understanding Video and Multimedia Input/Output Devices: Installation and Troubleshooting

This comprehensive guide covers the essential aspects of video and multimedia input/output devices, including CRT and LCD displays, sound devices, and scanners. Learn to describe, install, and troubleshoot CRT and LCD displays, as well as connect and utilize speakers and microphones. Explore different video technologies, characteristics of CRT and flat panel monitors, and the principles of sound input/output devices. Additionally, gain insights into connecting and troubleshooting scanners and digital cameras to enhance your multimedia setup.

zephania-estrada
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Understanding Video and Multimedia Input/Output Devices: Installation and Troubleshooting

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  1. Video and multimedia input/output devices Unit objectives • Describe, install, and troubleshoot CRT displays • Describe, install, and troubleshoot LCD displays • Connect and use speakers and a microphone • Connect and troubleshoot scanners and digital cameras

  2. Topic A • Topic A: Cathode ray terminals • Topic B: LCDs and other video technologies • Topic C: Sound input and output devices • Topic D: Scanners and cameras

  3. CRT monitor

  4. CRT components • Cathode • Anode • Phosphors • Pixel triad • Electronic beam positioning • Shadow mask • Aperture grill • Slotted mask

  5. How CRTs produce images

  6. Activity A-1 Examining how CRTs produce images

  7. CRT characteristics • Screen size • Aspect ratio • Resolution • Refresh rate • Dot pitch • Flat or curved screen

  8. Activity A-2 Comparing monitor specifications

  9. Video connectors

  10. Display properties • Screen resolution • Color quality • Monitor settings • Color depth

  11. Display adjustments • Brightness • Contrast • Position of image on screen • Adjustment method varies by monitor

  12. Activity A-3 Installing a CRT

  13. CRT issues • Screen is black • Image flickers or distorts • Noisy monitor • Image scrolling • Video Display Troubleshooter

  14. Activity A-4 Troubleshooting CRT problems

  15. Topic B • Topic A: Cathode ray terminals • Topic B: LCDs and other video technologies • Topic C: Sound input and output devices • Topic D: Scanners and cameras

  16. Flat panel monitor

  17. LCD advantages • Less power is used • Less heat is created • Use less desk space • Less glare • Less radiation emitted

  18. How a flat panel screen works

  19. Flat panel monitor characteristics • Screen size • Viewing angle • Response rate • Contrast ratio • Native resolution • Brightness • Other features • Change orientation • Built-in speakers • Anti-theft lock • Wall mounting

  20. Flat panel monitor connections • Connection types • 15-pin VGA style connection cable • DVI-D • DVI-I

  21. DVI-D • Digital-only connection • Dual-link contains 24 pins in 3 rows of 8 plus a grounding slot • Single-link contains 18 pins

  22. DVI-D connector DVI-D connector

  23. DVI-I • Supports digital and analog signals • DVI-I contains 4 additional pins over DVI-D • Extra 4-pins carry analog signals • Analog signal pins located above and below the grounding slot

  24. TMDS • Transition minimized differential signaling • Protocol used to transmit data to digital monitor • No analog conversion • Single-link cables use one TDMS transmitter • Dual-link cables use two TDMS transmitters • Supported resolutions • Single-link up to 1920x1080 • Dual-link up to 2048x1596

  25. Touch screen • Touch-sensitive surface • Pressure-sensitive resistors • Infrared sensors • Electronic capacitors • Uses • PDAs • Point-of-sale terminals • Bank ATMs

  26. Touch screen input methods • Additional layer with electrical current • Capacitors between layers • Acoustic waves

  27. Activity B-1 Examining how LCDs produce images

  28. Multiple monitors

  29. Display projectors • Show computer screen to large groups • Useful for meetings and classroom • Connect using • VGA • S-Video • Composite • USB • Serial

  30. DisplayPort technology • New specification developed by VESA • Covers • Displays • CRT • LCD • Plasma • Projection • Connections • PCs • Game systems • DVD players • Other image sources

  31. Activity B-2 Installing an LCD monitor

  32. LCD monitor issues • Indicator light colors • Shaky image • Fuzzy image • No image • Discolored image

  33. Activity B-3 Troubleshooting LCD problems

  34. Topic C • Topic A: Cathode ray terminals • Topic B: LCDs and other video technologies • Topic C: Sound input and output devices • Topic D: Scanners and cameras

  35. Speakers connected to a PC

  36. Speakers connected together

  37. Activity C-1 Connecting speakers

  38. Microphone connection to a PC

  39. Activity C-2 Using a microphone

  40. Music keyboard connected to ⅛” jack

  41. MIDI connections

  42. Activity C-3 Connecting musical instruments to a computer

  43. Topic D • Topic A: Cathode ray terminals • Topic B: LCDs and other video technologies • Topic C: Sound input and output devices • Topic D: Scanners and cameras

  44. Flatbed scanner

  45. Multifunction sheetfeed scanner

  46. Hand-held scanner

  47. TWAIN • Supported by scanners and imaging applications • “Never the twain shall meet” • TWAIN eases scanner connection • Most scanners have more full-featured software from manufacturer

  48. Scanner configuration features • Image type • Scan mode • Scan resolution • Scaling • Destination • Image control • Preview features • Scan

  49. Scanner connections • Older scanners • Slow parallel ports • SCSI devices • Current scanners • USB • FireWire • All PnP-compliant • Use Device Manager to update driver

  50. Activity D-1 Connecting a scanner

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