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2. Tape head cleaner - Wikipedia

   en.wikipedia.org/wiki/Tape_head_cleaner

   A tape head cleaner is a substance or device used for cleaning the record and playback heads of a magnetic tape drive found in video or audio tape machines such as cassette players and VCRs. [1] These machines require regular maintenance to perform properly.

3. Gitzo - Wikipedia

   en.wikipedia.org/wiki/Gitzo

   Inter Pro Studex 10.0 kg 22.0 lb Compared to Studex, includes wing lock-offs on top tube and platform interchange system instead of center column, in common with Series 4 and 5. 4 Super Studex 37 mm 1.5 in 12.0 kg 26.5 lb In the 1987 catalogue, no wing locks and fixed leg spread (non-Performance). Pro Studex

4. VHS - Wikipedia

   en.wikipedia.org/wiki/VHS

   The head rotates constantly at [a] 1798.2 rpm in NTSC machines, exactly 1500 in PAL, each complete rotation corresponding to one frame of video. Two tape heads are mounted on the cylindrical surface of the drum, 180 degrees apart from each other, so that the two heads "take turns" in recording. The rotation of the inclined head drum, combined ...

5. Tape head - Wikipedia

   en.wikipedia.org/wiki/Tape_head

   Rotating play heads, as used in video recorders, digital audio tape and other applications, are used to achieve a high relative head/tape speed while maintaining a low overall tape transport speed. One or more transducers are mounted on a rotating drum set at an angle to the tape.

6. Video tape tracking - Wikipedia

   en.wikipedia.org/wiki/Video_tape_tracking

   In the case of VHS, a linear control track at the tape's lower edge holds pulses that mark the beginning of every frame of video; these are used to fine-tune the tape speed during playback and to get the rotating heads exactly on their helical tracks rather than having them end up somewhere between two adjacent tracks. However, the exact ...

7. Quadruplex videotape - Wikipedia

   en.wikipedia.org/wiki/Quadruplex_videotape

   The quadruplex format employs segmented recording; each transversely recorded video track on a 2-inch quad videotape holds one-sixteenth (NTSC) or one-twentieth (PAL) [6] of a field of interlaced video. (For NTSC systems, the math suggests 15 transverse head passes, each consisting of 16 lines of video, are required to complete one field.)