1、SUPTE 5 95 D 8357403 OOOL800 717 SMPTE STANDARD for Television Analog Recording - 2-in Reels ANSI/SMPTE 5-1 995 Revision of ANSI/SMPTE 5-1989 1 Scope This standard specifies the dimensions of reels in maximum capacities of 750, 1650, 3600, 5540, and 7230 fi designed to accommodate the maximum thickn
2、ess of 2-in wide magnetic tape for television recording, as specified in ANSVSMPTE 1. 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of this standard. At the time of publication the edition indicated was valid. All standa
3、rds are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. ANSVSMPTE 1-1 990, Video Recording - 2-in Magnetic Recording Tape 3 Reel dimensions 3.1 The dimensions of t
4、he reels shall be as specified in the figure and tables. 3.2 Flange-fastening members shall be flush with or below the outer surface of the flanges. 3.3 The outside cylindrical surface of the hub (C diameter) shall be concentric with the center bore (A diameter) within 0.002 in (0.05 mm) and shall h
5、ave a maximum taper of 0.001 6 in (0.041 mm). Page 1 of 2 pages 3.4 The outside diameter of the flanges (B di- ameter) shall be concentric to the center bore of the hub (A diameter) within 0.015 in (0.38 mm). enlarged view of 3 identical Figure 1 - Reel dimensions CAUTION NOTICE This Standard may be
6、 revised or withdrawn at any time. The procedures of the Standard Developer require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of publication. Purchasers of standards may receive current information on ali standards by calling or writin
7、g the Standard Developer Printed in USA L American National Slandard Copyright O 1995 by THE SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS 595 W. Hartsdale Ave., White Plains, NY 10607 (914) 761-1102 Approved January 3,1995 SMPTE 5 95 W 357401 OOOL01 653 m ANSMCMPTE 5-1995 Table 1 - Reei dimens
8、ions Dimensions Inches Millimeters Degrees A B C O E F G H?) K2) L2) Ji) M 3, + 0.004 3.000 - 0.000 See table 2 4.500 ?. 0.010 32.50 0.21 9 0.109 0.025 0.098 3.600 6.000 2.21 2 f 0.002 + 0.006 - 0.000 ref m ax m ax min min t 0.003 See table 2 114.30 t 0.25 82.55 f 0.05 + 0.15 5.56 - 0.00 2.77 ref 0.
9、64 max 2.49 max 91.44 min 52.40 min 120 t 0.1 56.18 0.08 ?) The surface of the flange from B to L shall lie between the planes defined by H and J. 2, Outside surfaces of reel flanges between diameters K and L shall not extend beyond the surfaces 3, The hub surfaces defined by M shall be parallel wit
10、hin 0.008 in (0.20 mm) and square with the hub defined by dimension M. outside diameter C within 0.003 in (0.08 mm) at maximum diameter. Table 2 - Reei capacities Maximum playing time in minutes at Maximum capacity?) 7.5 in (19.05 cm) 15 in (38.1 cm) Dimension B Feet Meters Der second Inches Millime
11、ters 750 229 20 1650 503 44 3600 I 097 96 5540 1689 148 7230 2204 192 10 6.500 t 0.010 165.10 t 0.25 22 8.000 t 0.010 203.20 t 0.25 48 10.500 t 0.010 266.70 t 0.25 74 12.500 2 0.010 317.50 0.25 96 14.000 t 0.010 355.60 t 0.25 ?)Maximum capacity is based on a minimum distance of 0.2 in (5 mm) from th
12、e reel periphery to the tape stack, utilizing maximum thickness tape. Annex A (informative) Additional data The outside diameters of the flanges, B, will give reels the capacities suggested in table 2. These capacities should be regarded as maximum. It is recommended that both flanges have air escape holes. If provided, these holes should extend to the hub periphery and be of such size at this point as to facilitate easy threading. Page 2 of 2 pages
