SMPTE ST 226M-1996 Television Digital Recording - 19-mm Tape Cassettes.pdf

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1、 STD*SMPTE 22bM-ENGL 199b 8357401 0002547 7T2 ANSVSMPTE 226M-1996 CMPTE STANDARD for Television Digital Recording - 19-mm Tape Cassettes 1 Scope This standard specifies dimensions for three sizes of cassettes (S, M, and L) for use with 19-mm television digital recorders. 2 Measurements 2.1 Dimension

2、s are in the metric system. 2.2 Tests and measurements on cassette parameters shall be made under the following atmospheric conditions: - Temperature 20CI 1C - Stabilization time 24 hours - Relative humidity (501 2)% 2.3 Dimensions shall be as specified in the figures and tables. 2.4 General toleran

3、ces for dimensions, except those for which tolerances are otherwise speci- fied, shall be as follows: To mm - Over - Page 1 of 26 pages 2.5 The tolerances employed by cassette manu- facturers must also conform to the requirements specified in figure 23. 3 General specifications 3.1 The three sizes o

4、f cassettes shall be defined as: - S: Small - M: Medium - L: Large 3.2 Maximum recording time in minutes for a fully loaded cassette shall be as specified in table 1. Table 1 - Maximum recording time I Tape thickness Cassette 16 pm 13 pm 11 pn I size D-1 D-1 D-2 D-6 S 11 min 13 min 31 min 8 min M 34

5、min 41 min 93 min 28 min L 76 min 94 min 207 rnin 64 rnin O 4 f 0.2 4 16 i 0.3 16 63 10.4 63 250 f 0.5 250 zk 0.7 3.3 The magnetic coating on the tape shall face out of the cassette as specified in figures 1 to 3. The users attention is called to the possibility that compliance with this standard ma

6、y require use of an invention covered by patent rights. willingness to grant a license under these rights on reasonable and nondiscriminatory terms and conditions to applicants desiring to obtain such a license. Details may be obtained from the publisher. By publication of this standard, no position

7、 is taken with respect to the validity of this claim or of any patent rights in connection therewith. The patent holder has, however, filed a statement of No representation or warranty is made or implied that this is the only license that may be required to avoid infringement in the use of this stan

8、dard. I CAUTION NOTICE: This Standard may be revised or withdrawn at any time.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 five years from the date of publication. Purchasers of standards may receive current infor

9、mation on all standards by calling or writing the Standard Developer. Printed in USA. Copyright01996 byTHESOCIEPIOF L American National Standard MOTION PICTURE ANDTELEVISION ENGINEERS 595 W. Hartsdaie Ave., white Plains, NY 10607 (914) 761-1100 i Approved October 3,1996 ANSUSMPTE MBM-1996 K L M N O

10、P 3.4 Transmissivity of the cassette perpendicular to datum plane Z shall be less than 5%, measured over the range of wavelengths 700 nm to 900 nm. O 1 O 1 13 pm tape, class 1500 D-2 1 1 O 1 Undefined O O 1 1 U ndef i ne d 1 O 1 1 11 pm tape - Reserved Reserved O 1 1 1 Undefined Reserved 1 1 1 1 11

11、um taDe - Reserved 4 Datum planes 4.1 Datum plane Z is determined by datum areas A, B, and C as specified in figures 4 to 6. 4.1.1 Datum C need not correspond to a fastener. 4.2 Datum plane X shall be orthogonal to datum plane Z and shall run through the center of datum hole (a) and datum hole (b) a

12、s specified in figures 7 to 9. 4.3 Datum plane Y shall be orthogonal to both datum plane X and datum plane Z and shall run through the center of datum hole (a) as specified in figures 7 to 9. 5 Window and labels 5.1 Window and label areas shall be as specified in figures 1 O to 12. 5.2 Labels attach

13、ed to the cassette shall not extend beyond the external dimensions as shown in figures 10 to 12. 5.2.1 Labels shall not interfere with users or manufacturers identification holes. 5.2.2 Labels shall not interfere with the hub drive and support mechanism. 6 Identification holes 6.1 There shall be two

14、 sets of identification holes: user holes and manufacturer coding holes. 6.1.1 Figures 13 to 15 detail the location of user and manufacturer coding holes. Manufacturer holes shall be used in combinations according to the tape thickness, coercivity, and/or application according to table 2. 6.1.2 A “0

15、“ in table 2 indicates that the recorder/player sensor mechanism has detected that the indicator tab has been removed and the hole is open. Table 2 - Manufacturer coding holes Hole number 21 31 4 Description Format application H 11) 1) 1) 01 Undefined I 101 01 01 11 Undefined I J 11lo10111 Undefined

16、 I l Page 2 of 26 pages STD-SUPTE 22bU-ENGL L77b 8357q03 0002597 775 6.2 The dimensions and location of the user holes are specified in figures 13 to 15. Their use shall be defined as follows: 6.2.1 When a “O” state exists, the user holes shall identify the following conditions: Hole number 1: Total

17、 record lock out (au d i o/vi deo/cu e/ti me code/control track) Hole number 2: Reserved and undefined Hole number 3: Video and control track record lock out Hole number 4: Reserved and undefined 6.2.2 The user plug mechanism shall withstand an axial force of 0.5 N. 7 Leaderkrailer tape 7.1 The cass

18、ette shall include leader and trailer tape. When attached to the hub, there shall be a length of 300 mm f 30 mm between the splice point and the outside of the shell. 7.2 The leadedtrailer tape material shall be poly- ester or equivalent having a transmissivity of at least 60% when measured with a 7

19、00 nm to 900 nm light source. 7.3 When attached to the hub, the leadedtrailer tape shall not separate when subjected to a force of 22 N or less. 7.4 The width of the leadedtrailer tape shall be 19.000 mm f 0.025 rnm. 7.5 The thickness of the leaderhrailer tape shall be 20 pm f 10 pm. 7.6 The splicin

20、g tape used to attach the leader tape shall be applied to the nonmagnetic coated side. 8 Reels 8.1 The dimensions of the reels and the relation- ship between the reels and reel tables are speci- fied in figures 16 and 17. 8.2 The reels shall be locked automatically when the cassette is removed from

21、the recorder/player. ANSUSMPTE 226M-1996 8.3 When an S cassette is inserted into a recorder/player, the reels shall be unlocked automatically as specified in figure 18. 8.3.1 The force needed to release the reel lock of the S cassette shall be 0.6 N max. 8.4 When an M or L cassette is inserted into

22、a recorder/player, the reel shall be unlocked auto- matically by opening the lid as specified in figures 19 and 20. 8.5 The reel shall be held in position by a reel spring with a force as shown in table 3, when the height of the reel table support is 2.0 mm tr 0.2 mm from datum plane Z. 9 Lid 9.1 Th

23、e lid shall be unlocked and opened by the recorder/player when the cassette is inserted. 9.1.1 The lid shall be unlocked by a 0.6 N max force being exerted upon the release pin, as specified in figures 21 and 23. 9.1.2 The inner door shall be lifted by the re- corder/player to the position shown in

24、figure 22. 9.2 The outer door when open shall not exceed 51 rnm with respect to datum plane Z, as speci- fied in figure 22. 9.3 When the cassette is removed from the recorder/player, the lid shall lock automatically. 9.4 The maximum force to open the lid shall be 1.5 N at the minimum height defined

25、in figure 22. 9.5 The force required to open the lid shall be applied 90” k 5” to datum plane Z. 1 O Space for tape loading mechanism The shaded area of figure 23, intended for manufac- turers of DlTRs, is the area available for loading (threading) of tape. It should be noted that the dimen- sions d

26、efining this space are not cassette dimensions, but are shown to be an interference-free space. Cas- sette dimensions are shown in figures 7, 8, and 9. Page 3 of 26 pages STD-SMPTE 22bM-ENGL 377b 8357403 0002550 LI77 ANSUSMPTE 226M-1996 DStUm ane Y/ NOTES 1 Dimensions marked with an asterisk are nom

27、inal values specifying the tape path. 2 Area for the reel. Figure 1 - Internal structure and tape path of S cassette - Top view (for reference only) Page 4 of 26 pages ANSIISMPTE 226M-1996 NOTES 1 Dimensions marked with an asterisk are nominal values specifying the tape path. 2 Area for the reel. Fi

28、gure 2 - Internal structure and tape path of M cassette - Top view (for reference only) Page 5 of 26 pages STD-SUPTE 22bM-ENGL 1996 M 8357q0L 0002552 2bT ANSVCMPTE 2261-1996 Mex imurn area Xi32 r 883 823.5 X181 - SUPPIY Side/ Datun plane Y r, Maximum area tor tape guide / Lid lock NOTES 1 Dimensions

29、 marked with an asterisk are nominal values specifying the tape path. 2 Area for the reel. Figure 3 - Internal structure and tape path of L cassette - Top view (for reference only) Page 6 of 26 pages STD-SMPTE 22bM-ENGL L77b m 8357901 0002553 ZTb m ANSVSMPTE 226M-1996 NOTE 1 uaxlrnum nolaino area 11

30、-. 1 - 145 1 NOTE 2 m NOTE 3 support ar ea Datum area Datum plane / I I I I 3 NOTES 1 The cassette shall be secured by the recorder andor player unit on the dotted area. 2 The periphery within 1 .O mm from the edge of guiding groove B and from the edge of the cassette shall be removed from 3 Datum p

31、lane 2 shall be determined by datum areas A, B, and C. the support area. The cassette shall be supported by the hatched area. Figure 4 - Datum area, support area and holding area of S cassette Page 7 of 26 pages - STD-SUPTE 22bM-ENGL L77b 8357403 0002554 O32 i ANSVCMPTE 2261111-1 996 Mdxlmum holding

32、 area sumort area NOTE 2 NOTE 3 NOTES 1 The cassette shall be secured by the recorder and/or player unit on the dotted line. 2 The periphery within 1 .O mm from the edge of guiding groove B and from the edge of the cassette shall be removed from 3 Datum plane Z shall be determined by datum areas A,

33、B, and C. the support area. The cassette shall be supported by the recorder and/or player unit on the hatched area. Figure 5 - Datum area, support area and holding area of M cassette Page 8 of 26 pages STD-SMPTE 22bM-ENGL 377b 8357403 OCICI2555 T77 W ANSVSMPTE 226M-1996 Datum plane Y Guidino oroove

34、B 7 I l I I 1 I NOTE i MaXlfIIUm holding area support area NOTE 2 NOTE 3 7- I 106 242 I 1 O O 88 - 222 I NOTES 1 The cassette shall be secured by the recorder andor player unit on the dotted line. 2 The periphery within 1 .O mm from the edge of guiding groove B and from the edge of the cassette shal

35、l be removed from 3 Datum plane Z shall be determined by datum areas A, 6, and C. the support area. The cassette shall be supported by the recorder andior player unit on the hatched area. Figure 6 - Datum area, support area and holding area of L cassette Page 9 of 26 pages STD-SMPTE 22bM-ENGL 197b m

36、 8357901 000255b 705 m ANSVSMPTE 2261-1996 RmaX 0.5 I SECTION AA RmaX 0.5 I SECTION BB Figure 7 - Bottom view of S cassette Page 10 of 26 pages STDmSMPTE 22bM-ENGL 177b 8357qOL 0002557 AL11 ANSVCMPTE 2261-1996 RmaX 0.5 Rmax 0.5 Rmax 0.5 SECTION CC LI E SECTION AA Figure 8 - Bottom view of M cassette

37、 Page 11 of 26 pages - STD-SMPTE 22bM-ENGL 399b 8357403 0002558 788 9 ANSVSMPTE 226M-1996 W -I II A. t/ Rmnx 0.5 RAIX 0.5 Rmax 0.5 7. SECTION AA SECTION BE SECTION CC E Figure 9 - Bottom view of L cassette release Page 12 of 26 pages STD-SMPTE 22bM-ENGL L77b m 8357LIOL 0002559 bL4 m ANSVSMPTE 226M-1

38、996 Datum plane Y DETAILS OF A NOTES 1 The crosshatched area is available for the windowAabels. 2 Side label may be attached to this recessed area. 3 Rear label may be attached to this recessed area. 4 Lid label may be attached to this recessed area. 5 Top label may be attached to this recessed area

39、. Figure 10 - Top and side view of S cassette Page 13 of 26 pages STD-SMPTE 22bM-ENGL L77b m 8357401 00025b0 33b m ANSVSMPTE 226M-1996 I I NOTE 2 /“- etn:o.zto0.3 Datum Diane z 7 Datum plane x NOTE 2 Donth:O.Zto0.3 SECTION BE DETAILS OF A NOTES 1 The crosshatched area is available for the window/lab

40、els. 2 Side label may be attached to this recessed area. 3 Rear label may be attached to this recessed area. 4 Lid label may be attached to this recessed area. 5 Top label may be attached to this recessed area. Figure 11 - Top and side view of M cassette Page 14 of 26 pages _ STD-SMPTE 22bM-ENGL 277

41、b 8357LIOl 00025bl 272 = ANSVSMPTE 226M-1996 /-o. 2 tao. 3 NDTE i window area / Label area see Flo.lS 224 90 , .6- r; i90 . I r SB FIP.lT NOTE 5 Oeth:O.2to0.3 max 235 max 101 366 ) DETAILS OF C c 3l.6 I I WI I /Y I I I I /I I I I I / I I i m DBtOnt: ana MIS- Insertion notch 80.7 - 2 8 O+: i1 7- NOTE

42、S 1 The crosshatched area is available for the window/labels. 2 Side label may be attached to this recessed area. 3 Rear label may be attached to this recessed area. 4 Lid label may be attached to this recessed area. 5 Top label may be attached to this recessed area. - Figure 12 - Top and side view

43、of L cassette Page 15 of 26 pages _ STD-SMPTE 22bM-ENGL 1976 8357g03 00025b2 109 9 ANSVSMPTE 2261111-1996 Oatum Diane x . 130.5 c 67 I I m , user DIua (i) I, atum plane Y ,Oaturn Plane 2 SECTION OD SECTION CC user hole (i) 4-max 0.7 SECTION BE NOTES 1 The cassette shall be provided with four coding

44、holes (1) to (4) and four user holes (1) to (4). When any plug is removed, the opening shall be as shown in detail A. User plug (1) shall be green. 2 User holes (3) and (4) on the upper shell shall be opened when user plugs are removed. 3 All cassettes shall be provided with holes as defined by sect

45、ions DD and CC. 4 See annex A. Figure 13 - S cassette coding holes and user holes Page 16 of 26 pages STD-SMPTE 22bM-ENGL 177b m 8357401 00025b3 045 m ANCVSMPTE 226M-1996 Oaturn Diane 2 Datum piane x oatum plane Y 130.5 67 user PIUO (3) User PIUO (2) -I (Datum noie) 13 O . 5:O-S .I- J SECTION OD SEC

46、TION CC SECTION eB NOTES 1 The cassette shall be provided with four coding holes (1) to (4) and four user holes (1) to (4). When any plug is removed, the opening shall be as shown in detail A. User plug (1) shall be green. 2 User holes (3) and (4) on the upper shell shall be opened when user plugs a

47、re removed. 3 All cassettes shall be provided with holes as defined by sections DD and CC. 4 SeeannexA. Figure 14 - M cassette coding holes and user holes Page 17 of 26 pages STD.SMPTE 22bM-ENGL L77b 83574011 00025bq TAL ANSVSMPTE 226M-1996 130.5 67 I I I * user OIUP (4) Datum olane Y User PIUP (3)

48、t +#=I- User OIUQ (2) r Datum olane z 7 SECTION CC DETAILS OF A SECTION BB NOTES 1 The cassette shall be provided with four coding holes (1) to (4) and four user holes (1) to (4). When any plug is removed, the opening shall be as shown in detail A. User plug (1) shall be green. 2 User holes (3) and

49、(4) on the upper shell shall be opened when user plugs are removed. 3 All cassettes shall be provided with holes as defined by sections DD and CC. 4 SeeannexA. Figure 15 - L cassette coding holes and user holes Page 18 of 26 pages STD-SUPTE 22bM-ENGL 399b m 8357403 00025b5 738 m ANSVSMPTE 226M-1996 CASSETTE S U w CASSETTE L Q: 0178.5 REF L 058-00 Internal radii max R0.3 066. 4:o.z NOTE -The center of the reel and the reel table shall be positioned on either the 36.0 mm + O mm - 0.1 mm or the 45.0 mm + 0.1 mm -0 mm diameter. Fi