ANSI SMPTE ST 16M-1998 Television Analog Recording - 1-in Type B Helical Scan - Records.pdf
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1、STD-SMPTE 3bM-ENGL 3778 8357403 000309Li OT3 = SMPTE STANDARD for Television Analog Recording - 1-in Type B Helical Scan - Records SMPTE 16M-1998 Revision of ANSISMPTE 16M-1992 1 Scope This standard specifies the dimensions and location of the video, audio, and tracking-control records and the longi
2、tudinal separation of the simultaneously recorded information of the video and audio records, as recorded on 1 -in type B helical-scan television tape recordings. 2 General specifications 2.1 The dimensions in the metric system are primary. The English equivalents are derived and may deviate from es
3、tablished conversion practices. 2.2 The reference edge for dimensions in this standard shall be the lower edge as shown in figure 1. 2.3 Tests and measurements made on the re- corder to check the requirements of this stand- ard shall be made under the following atmospheric conditions: -temperature -
4、 relative humidity - barometric pressure -conditioning before testing 24 h 23“Ck 1 “C (73“Fk 2F) (50 f 2)“h 86 to 106 kPa (860 to 1060 mbar) Page 1 of 3 pages 3 Dimensions and position of the recorded records 3.1 The lateral location and dimensions of the video, audio, and control tracks shall be in
5、 ac- cordance with figure 1 and table 1. 3.2 The nominal width of audio records 1, 2, and 3 shall be 0.8 mm (0.031 in). 3.3 The audio and cue recordings shall be down- stream from the associated video information (see dimension J in figure 1 and table 1). 3.4 The audio recording shall be made so tha
6、t the azimuth of the recorded record is at an angle of 90“ I 5 to the reference edge of the tape. Audio 1 and 2 head gaps shall be in line. 3.5 The position of the field synchronizing signal on the video record shall be 7.609 mm f 0.024 mm (0.29957 in k 0.00094 in) from the intersec- tion of Lt and
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- ANSISMPTEST16M1998TELEVISIONANALOGRECORDING1INTYPEBHELICALSCANRECORDSPDF
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