1、STD.SMPTE LbL-ENGL 1998 = 835703 O003022 905 m CMPTE STANDARD SMPTE 161 -1 998 Revision of ANSIISMPTE 161-1992 for Motion-Picture Film (8-mm Type S) - Magnetic Striping 1 Scope This standard specifies the location and dimensions of the magnetic recording stripe and the balance stripe applied to 8-mm
2、 motion-picture film with one row of 8-mm type S perforations. 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 standards are subject to rev
3、ision, 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 149-1 994, Motion-Picture Film (8-mm Type S) - Perforated 1 R 3 Dimensions 3.1 The location and dimensions of the magne
4、tic recording stripe and the balance stripe shall be as given in figure 1 and table 1. Page 1 of 2 pages 3.2 The magnetic stripe shall be on the side of the film which will be toward the light source when used on a projector arranged for direct front projection on a reflection-type screen. 3.3 The m
5、agnetic stripe shall be adjacent to the unperforated edge and is intended for the audio record. The narrow stripe adjacent to the perforated edge is a balance stripe. The balance stripe may be a stripe of magnetic or nonmag- netic material of such thickness that the balance and recording stripes pro
6、ject above the surface of the film to substantially the same degree. 4 Film stock The film stock used shall be safety type, cut and perforated in accordance with ANSVSMPTE 149. NOTE - Notwithstanding the tolerance on dimensions M and N, the width of the stripe, dimension N minus M, shall be 0.0250 i
7、n (0.635 mm) minimum. Copyright Q 1996 by THE SOCIETY OF MOTION PICTURE ANDTELEVISION ENGINEERS 595 W. Harkdale Ave., White Plains, NY low7 (914) 761-1100 Approved September 1,1998 STD-SMPTE 3b3-ENGL 1778 m 8357403 0003023 8+1 m SMPTE 161-1998 LIGHT BEAM FOR DIRECT PROJECT I ON - TYPE SCREE - MAGNET
8、 IC 1 RECORD I NC STR I PE 4 /LM- -A- NOTE - Film as seen looking toward lens Figure 1 - Dimensions Table 1 - Specifications REFERENCE a TRAVEL BALANCE STR IPE -u -V 1 Dimensions Inches Millimeters 1 I A 0.314 nom 7.98 nom I MI) Ni) U 0.285 f 0.002 0.312 f 0.002 0.003 f 0.003 7.24 It 0.05 7.92 10.05 0.08 10.08 I v 0.015 f 0.003 0.38 10.08 1 1 See note. Page 2 of 2 pages
