Abstract： IEC 61904:2000 pdf free download.Video recording - Helical-scan digital component video cassetterecording format using i2,65 mm magnetictape and incorporating data compression. Hole 2, hole 4 and hole 5 shall be closed and hole 6 shall be o...

IEC 61904:2000 pdf free download.Video recording - Helical-scan digital component video cassetterecording format using i2,65 mm

magnetictape and incorporating data compression.

Hole 2, hole 4 and hole 5 shall be closed and hole 6 shall be open. Other combinations are reserved for future assignment.

2.1.9 Reel

Locations of the reels, ready for rotation, are shown In figures 4 and 17. Dimensions of the

reels are shown in figures 6 and 19. Heights of the reels are shown in figures 7 and 20.

The reels shall be automatically unlocked when the cassette is inserted intO the video tape recorder andior player unit and

automatically locked when the cassette is ejected from It.

The reel shall be completely released when the cassette lid is opened 23,5 mm minimum from datum plane Z.

The reels assembled in the cassette shall be pressed by the reel spiing with a specified force under the conditions specified in

figures 11 and 24. The reel spring shape is specified in figure 11 for S cassettes and in figure 24 for L cassettes, and the spring force shall be 1.5 N ± 0.5 N (153 gf ± 51 gf) for S cassettes and 3,5 N ± 0.5 N (357 gf ± 51 gf) for L cassettes when pressing on a reel 2.4 mm above datum plane Z as shown in figures 11 and 24.

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