SMPTE ST 1-1996 Video Recording - 2-in Magnetic Recording Tape.pdf

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1、SMPTE 1 9b 8357401 0002333 773 SMPTE STANDARD ANSVSMPTE 1-1 996 Revision of ANSVSMPTE 1-1990 for Video Recording - 2-in Magnetic Recording Tape 1 Scope This standard specifies the dimensions for the width, thickness, and curvature of 2-in video magnetic re- cording tape. 2 Dimensions 2.1 Width The w

2、idth of the tape shall be 2.0000 in + O in - 0.0025 in (50.800 mm + O mm - 0.064 mm). 3 Curvature 3.1 Specification The curvature of the tape shall not exceed 0.0625 in (1.588 mm) in 48 in (1219 mm). 3.2 Measurement Curvature shall be measured by constraining the tape to lie in a plane under zero te

3、nsion and by positioning a 48 in (1219 mm) long straightedge, as shown in figure 1. The maximum deviation, C, of the tape edge from the straightedge shall be taken as the curvature. 2.2 Thickness The combined thickness of the base and magnetic material coating shall not exceed 0.0015 in (0.038 mm).

4、Straightedge I 48 in - (1219 mm) Figure 1 - Curvature measurement CAUTION NOTICE: This Standard may be revised or withdrawn at any time.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 tive years from the dale of publ

5、ication. Purchasers of standards may receive current information on all standards by calling or writing the Standard Develooer. Printed in USA. Copynght O 1996 Dy THE SOCIW OF American National Standard MOTION PICTURE AND TELEVISION ENGINEERS 595 W. Hamdale Ave., WhRe Plains, NY 10807 (914) 761-1 100 Approved February 8,1996