==============================================================================TITLE:   DISC, COMPACT MEDIAProprietary Information:This document contains proprietary information of Digital Equipment Corporation.  This document and the information it contains may only be used in the design, production, or manufacture of products for Digital Equipment Corporation.Default Tolerances:  Unless otherwise specified, dimensions are in: ___|   |     Inches:  One place + 0.1, two places + 0.02, three places                   + 0.005, Fractional + 1/64 ___| x |     Millimeters:                           _______________________________________________                   Check  | Over  | Over  | Over  | Over  | Over  | Over  |                    One   |  1    |  5    |  30   | 100   | 300   | 1000  |                          |  to   |  to   |  to   | to    | to    |  to   |                    ______|  5    |  30   | 100   | 300   | 1000  | 3000  |                   |   x  | + 0.1 | + 0.2 | + 0.3 | + 0.4 | + 0.6 | + 1.0 |                   |------|-------|-------|-------|-------|-------|-------|                   |      | + 0.3 | + 0.4 | + 0.6 | + 1.0 | + 1.6 | + 2.5 |                    ------------------------------------------------------                   Angle Tolerance is + 0o30'Approved Vendor:Approved vendors are designated in Digital's Qualified Vendor Listing.______________________________________________________________________________________________________________________________________________________Document Approvals and Date:Design Engineer    Component Engineer     Writer           Approval DateChris Williams     Chris Williams         M.L. Hoey        30 MAY 89Document Revision History:Approval Name  Responsible Engr. Component Engr. ECO No. Doc. Rev DateJ. Millar                                        00001   B        23 JUN 89 _______________________________________________________|   DIGITAL PART  ||   DIGITAL PART  ||   DIGITAL PART  ||                 ||                 ||                 ||  NUMBER   | REV ||  NUMBER   | REV ||  NUMBER   | REV ||           |     ||           |     ||           |     ||30-23507-01| A01 ||30-23507-02| A01 ||30-23507-03| C01 |                                  TABLE I                            ITEM IDENTIFICATION     ----------------------------------------------------------------    |   DIGITAL   |             DESCRIPTION                | DIGITAL |    |    PART     |                                        | OPTION  |    |   NUMBER    |                                        | NUMBER  |    |----------------------------------------------------------------|    | 30-23507-01 |  Disc, Compact Media                   |         |    |----------------------------------------------------------------|    | 30-23507-02 |  RRD50 Test Disc                       |         |    |----------------------------------------------------------------|    | 30-23507-03 |  RRD40 Test Disc                       |         |     ----------------------------------------------------------------                                                                      TABLE OF CONTENTS    1.0       GENERAL DESCRIPTION    2.0       APPLICABLE DOCUMENTS    3.0       REQUIREMENTS    3.1         Mechanical    3.1.1         Disc Outer Edge Specification    3.2         Electrical    3.2.1         Recording Format    3.2.2         Maximum Bytes of Storage per Disc    3.3         Performance    3.3.1         BLER on Manufactured Discs    3.3.2         Level 3 Uncorrectable Errors on the Master    3.3.3         Level 3 Uncorrectable Errors on Manufactured Discs    3.3.4         Level 3 Correctable Errors on Manufactured Discs    3.3.5         Linear Velocity    3.3.6         Track Pitch    3.3.7         Aging    3.4         Test Discs    APPENDIX A  RRD40 Test Disc Specifications1.0  GENERAL DESCRIPTION:     This specification defines the detail requirements for the general,      physical, data structure, and electrical requirements for the Compact      Disc Read Only Memory (CDROM), 4.7 inch (120 mm) diameter, replicated      disc. The requirements herein are applicable to the purchase of new      discs only, except where otherwise indicated. The disc is intended      specifically for use with compact disc players employing read only      memory laser technology and constant linear velocity.2.0  APPLICABLE DOCUMENTS (Per latest revision on date of order):     Digital Equipment Corporation:     DEC-STD-092                  Finish and Color Standard     DEC-STD-102                  Environmental Standard for Computers and                                   Peripherals     A-SP-RRD40-0-DBT             RRD Test Disc Pattern Specifications     A-PS-3030656-0-0             5.25 Inch, 600 Mbyte, CDROM Drive                                  Purchase Specification     ECMA:     ECMA-130                     Data Interchange on Read-Only 120 mm                                   Optical Data Discs (CDROM), 1988     Military:     MIL-STD-105                  Sampling Procedures and Tables for                                   Inspection by Attributes3.0  REQUIREMENTS:          Discs shall meet all ECMA-130 Specifications. In addition, discs      manufactured for DIGITAL shall meet the following criteria:3.1   Mechanical:3.1.1   Disk Outer Edge Specification: The outside surface of the disc may         be either beveled or cylindrical.        If the outside surface of the disk is cylindrical, it must not         contain a lip on the label edge of the disc, as shown in the         following diagram:               Label Side             ------------------------------------           Center Hole                        |   \             ---------------------------------     \                                                  Outer Edge Showing Lip                If this lip is present, the disc may stick or jam in a DIGITAL         drive during normal use.        Disks can be tested for this condition by examining the outer edge         with an appropriate tool to visually inspect for the presence or         absence of a lip. If the labeled side is more than 30 microns         larger in diameter than the unlabeled side, the disc shall be said         to contain a lip.3.2   Electrical:3.2.1   Recording Format:  DIGITAL shall use only the mode 1 recording         format as specified in the ECMA-130 standard.3.2.2   Maximum Bytes of Storage per Disc:  Discs shall not be manufactured         with more than 72 minutes of playing time. This translates into no         more than 635 megabytes of digital data storage using mode 1         recording format.3.3   Performance:        Performance measurements are based on "as manufactured" quality,               and do not include user induced errors.        3.3.1   Raw Error Rate on Manufactured Discs:        The frame error rate as specified in ECMA-130, section 12.5.2,        averaged over any 10 second interval, shall be less than 3 X 102. 3.3.2   Level 3 Uncorrectable Errors on the Master:          There shall be no level 3 uncorrectable errors on the father as         played on the master player during the mastering process. 3.3.3   Level 3 Uncorrectable Errors on Manufactured Discs:        There shall be no uncorrectable level 3 errors on discs produced.         This measurement shall be taken from a statistically valid sample         of production discs.3.3.4   3 Bit Errors in the C2 Decoder (E32) on the Manufactured Discs:                There shall be no more than 5% of any particular manufacturing lot         with an E32 count greater than 0. This measurement shall be taken         from a statistically valid sample of production discs.        An E32 error causes invocation of level 3 ECC, which degrades        performance greatly. A number of errors on any one disc will render         that disc unuseable by DIGITAL and it's customers due to         performance degradation.        It shall be understood by DIGITAL and its vendors that a goal of         zero errors shall be the objective. It shall be the responsibility         of DIGITAL and vendor manufacturing to keep the error count per         disc and per batch as low as possible.        3.3.5   Linear Velocity:  Discs shall be mastered such that the linear         velocity shall not be lower than 1.25 meters per second.3.3.6   Track Pitch:  Nominal track pitch consistent with maximum data         reliability shall be used in all cases when mastering discs.3.3.7   Aging:  Discs shall be manufactured for an expected life time of 10         years under normal use.3.4   Test Discs:      30-23507-02 and 30-23507-03 are test discs for the RRD50 and the       RRD40, respectively. Information on test disc data patterns, CDROM       disc structure, and the macro program used to generate data patterns       are found in the DIGITAL engineering specification A-SP-RRD40-0-DBT.       Information on the RRD40 test disc specifications are in Appendix A       of A-PS-3023507-0-0. The major differences between the two test discs       are as follows:      1. Logical Block Number 0 (00:02:00) has a slightly different header.      2. The RRD50 test disc has a forced error at sectors 64:55:73 and          64:55:74 while the RRD40 test disc has a number of forced errors          occurring in the disc range from 60:00:00 minutes to the end of          the disc. (This is described in Appendix A.)      3. There is slightly less capacity on the RRD40 test disc.      APPLICATION NOTE: The CD disc uses the Minute:Second:Frac (mm:ss:ff)       format.         One Logical Block Number (LBN) contains 512 bytes of data.         One frame contains four LBNs.         One second contains 75 fracs.         One minute contains 60 seconds.      The first sector of the test disc is composed on LBNs 0, 1, 2, and 3.       LBNs 0-3 are located at 00::02::00 on the disk in mm:ss:ff format.                                                                                                           APPENDIX A                      RRD40 TEST DISC SPECIFICATIONS                                30-23507-031.0  DATA PATTERNS:     Use RRD40 data patterns, specified in A-SP-RRD40-0-DBT:1.1  Revision B Mastering Parameters:       Track Pitch:       1.55 microns       Scan Speed:        1.25 meters/sec.1.2  Revision C Mastering Parameters:       Track Pitch:       1.6 microns        Scan Speed         1.3 meters/sec.                                  1.3  If a new master must be created for any reason, it should be created      using the revision B track pitch and linear velocity. The revision of      the disc should be updated on the label. All new masters for this disc      require requalification by DIGITAL to verify proper function in the      RRD40. 2.0  ERROR CHARACTERISTICS:2.1  Revision B:       Burst Error:       2.0 microseconds +/- 2%       Duty Cycle:        34% +/- 2%       Dropout Length:    0.70 microseconds +/- 2%                         2.2  Revision C:       The mastered errors must be of sufficient size to be flagged as            uncorrectable C2 errors by the RRD40, but shall not cause detracking       or other player errors. 3.0  DATA/ERROR MAP:3.1  Revision B:       Start Time           End Time             Defect Length       MM:SS:FF             MM:SS:FF             (one defect per range)       ----------           --------             ----------------------       Start of disc        00:01:74             TOC and Lead-In       00:02:00             60:29:74             Clean Data - No Errors       60:30:00             60:40:00             1.3 msec.       61:00:00             61:10:00             1.75 msec.       61:30:00             61:40:00             2.6 msec.       62:00:00             62:10:00             3.5 msec. *       (LBN 1115400)        (LBN 1118400)               62:30:00             62:40:00             3.5 msec.       63:00:00             63:10:00             5.2 msec.       63:30:00             63:40:00             7.0 msec.       64:00:00             64:10:00             10.5 msec.       64:30:00             --------             Start of Lead-Out       * This is the only error that is guananteed to be on the test disc.3.2  Revision C:     Data/Error Map:     Start Time             End Time             Comment     MM:SS:FF               MM:SS:FF                  ----------             ----------           -----------------     Start of disc          00:01:74             TOC and Lead-in     00:02:00               60:00:00             Clean Data - No Errors     60:00:01               Start of Leadout     Forced error section                            (Beyond 64:40:00)                         There must be at least one error conforming to the above error     characteristics between 62:00:00 and 62:10:00. Error placement     in the reminder of the Forced Error section is unspecified.4.0  SEQUENTIAL DATA PATTERNS:     There are 10 data patterns in sequential order that are repeated for      the entire disc. These patterns are fully defined in A-SP-RRD40-0-DBT.     0.  Sector x:x0:xx - 75 sectors of psuedo-random pattern2     1.  Sector x:x1:xx - 75 sectors of psuedo-random pattern3 alternating                           with 0's sector     2.  Sector x:x2:xx - 75 sectors of all 0s. *     3.  Sector x:x3:xx - 75 sectors of all 1s (FFH)     4.  Sector x:x4:xx - 75 sectors of 16 bit shifting 1 in a field of 0s      5.  Sector x:x5:xx - 75 sectors of 16 bit shifting 0 in a field of 1s.     6.  Sector x:x6:xx - 75 sectors of alternating 01 pattern (AAH)     7.  Sector x:x7:xx - 75 sectors of byte incrementing (OOH - FFH)     8.  Sector x:x8:xx - 75 sectors of encrypted data pattern      9.  Sector x:x9:xx - 75 sectors of psuedo-random pattern1 alternating                           with 0's sector      NOTES:      x      Indicates any valid value for the CD address in             Minute:Second:Frame (mm:ss:ff) format.     *      Sector 00:02:00 has the DIGITAL disc header on it. The             difference between the RRD50 test disc and the RRD40 test disc             is that the RRD40 will indicate that it is an "RRD40 TEST DISC"             and will have a "REV 2.0" revision, Reference A-SP-RRD40-0-DBT.