Fundamentals of Video Tape Recorder (VTRS)

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Introduction to Fundamentals of Video Tape Recorder (VTRS)
Lesson 1. Describe the basic operation of helical scan videotape recorders.
Figure 1-1. Helical scan videotape transport
Figure 1-2. Two popular methods of tape transport in helical scan machines
Learning Event 2: Describe the Purpose and Use of the Dual Head Recorders
Practice Exercise - Ss054660012
Answers to Practice Exercise - Ss054660013
Figure 1-3. Gap effect at high frequencies
Figure 1-4. Effect of surface defects
Figure 1-5. One-inch helical scan video tape showing scan tracks
Figure 1-6. One-inch helical scan video tape showing all dimensions and relative positions on the tape
Figure 1-7. Segment of helical scan video tape as it is being erased
Figure 1-8. Block diagram of servo signal source
Practice Exercise - Ss054660020
Answers to Practice Exercise - Ss054660021
Learning Event 5: Describe the Purpose and Use of Videotape Transport Mechanisms
Figure 1-9a. Tape transport mechanism
Figure 1-9b. Helical scan videotape transport
Good quality tape transports
Learning Event 6: Describe the Purpose and Use of Magnetic Heads
Figure 1-11. Flux lines in a recording gap
Figure 1-12. Laminated core tape head
Construction and operation of erase head.
Figure 1-13. Position of erase, record, and play (reproduce) heads
Practice Exercise - Ss054660031
Answers to Practice Exercise - Ss054660032
Learning Event 7: Describe the Purpose and Use of Video and Audio Tape Heads (Erase, Record, and Playback)
Figure 1-15. Audio erase head configurations
Figure 1-16. Video record/playback head
Control track record/playback head.
Learning Event 8: Describe Construction Principles of Various Type Heads
Figure 1-19. One-inch helical scan video tape, showing all dimensions and relative position on the tape
Learning Event 9: Describe the Purpose and Use of Heads on Tape Recorders, and Explain How to Repair Damaged Tape
Figure 1-20. Helical scan tape splicing
Practice Exercise - Ss054660041
Answers to Practice Exercise - Ss054660042
Lesson 2. Describe Basic Fundamentals of Tape Transport and Proper Operation/Maintenance Practices
Figure 2-1. Helical scan, tape transport
Figure 2-2. Helican scan, tape transport
The quadruplex recorder
Learning Event 2: Describe Single or Multiple Tachometer Outputs of Videotape Recorders
Figure 2-3. Printed circuit motor, outside view
Type of tape required.
Figure 2-5. Tachometer with single pulse output
Practice Exercise - Ss054660051
Answers to Practice Exercise - Ss054660052
Figure 2-7. Helical scan tape transport, showing points which should be cleaned
Figure 2-8. Helical scan, tape transport
Figure 2-9. Helical scan, tape transport
Figure 2-10. Helical scan head drum, showing direction of rotation compared to direction of tape travel
For more extended maintenance, it is wise to follow recommendations
Practice Exercise - Ss054660058
Answers to Practice Exercise - Ss054660059
Lesson 3. Describe hookup and interconnection procedures of video tape recorders.
Figure 3-1. RG-59 coaxial cable
Figure 3-2. The RCA phono plug
Figure 3-5. Patch cord
Figure 3-7. Mini plug and phone plug
Figure 3-8. Three-conductor plug, male
Figure 3-10. Standard pure video output
Figure 3-11. RF signal output
Figure 3-13. Wiring separate audio and video to your monitor
Figure 3-15. High and low level audio sources
Figure 3-16. Source-monitoring device and VTR-monitoring device
Practice Exercise - Ss054660071
Answers to Practice Exercise - Ss054660072
Fundamentals of Video Tape Recorder (VTRS)

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