ECMA 319 : 1ED 2001

Section 1 - General
1 Scope
2 Conformance
   2.1 Magnetic tape cartridge
   2.2 Generating system
   2.3 Receiving system
3 References
4 Definitions
   4.1 Access Point
   4.2 algorithm
   4.3 algorithmically processed data
   4.4 a.c. erase
   4.5 Average Signal Amplitude
   4.6 back surface
   4.7 Beginning of Tape (BOT)
   4.8 Beginning of Wrap (BOW)
   4.9 bit
   4.10 bit cell
   4.11 Broad Band Signal-to-Noise Ratio (BBSNR)
   4.12 byte
   4.13 cartridge
   4.14 Channel bit
   4.15 Codeword
   4.16 Codeword Pair
   4.17 Codeword Quad (CQ)
   4.18 CQ Set
   4.19 cyclic redundancy check (CRC) character
   4.20 Data Set
   4.21 Data Set Information Table (DSIT)
   4.22 End of Data (EOD)
   4.23 End of Tape (EOT)
   4.24 End of Wrap (EOW)
   4.25 Error Correcting Code (ECC)
   4.26 File Mark
   4.27 flux transition position
   4.28 flux transition spacing
   4.29 forward tape motion
   4.30 header
   4.31 Housekeeping Data Set
   4.32 logical forward
   4.33 logical reverse
   4.34 Logical Point
   4.35 magnetic tape
   4.36 Master Standard Reference Tape (MSRT)
   4.37 LTO Cartridge Memory (LTO CM)
   4.38 Optimum Recording Current
   4.39 physical end of tape
   4.40 physical forward
   4.41 physical reverse
   4.42 pre-record condition
   4.43 processed data
   4.44 Processed Record
   4.45 Processing (Compression)
   4.46 Protected Record
   4.47 Record
   4.48 recorded element
   4.49 Reference Recording Current
   4.50 Reprocessing (Decompression)
   4.51 reverse tape motion
   4.52 run length limited encoding (RLL)
   4.53 Secondary Standard Reference Tape (SSRT)
   4.54 servo acquisition region
   4.55 Standard Reference Amplitude (SRA)
   4.56 Symbol
   4.57 Synchronised Codeword Quad (SCQ)
   4.58 Test Recording Density (TRD)
   4.59 wrap
   4.60 write equalisation
   4.61 (1,7) RLL code
5 Conventions and notations
   5.1 Representation of numbers
   5.2 Dimensions
   5.3 Names
   5.4 Alphanumeric string encoding
6 Acronyms
7 Environment and safety
   7.1 Cartridge and tape testing environment
   7.2 Cartridge operating environment
   7.3 Cartridge storage environment
   7.4 Tape tension
   7.5 Safety
   7.6 Flammability
   7.7 Transportation
Section 2 - Requirements for the Cartridge
8 Dimensional and Mechanical Characteristics of the
   Cartridge
   8.1 Elements of the cartridge
   8.2 Reference Planes of the case
   8.3 Dimensions of the case
        8.3.1 Overall dimension
        8.3.2 Reference points for reference planes
        8.3.3 Positioning notches
        8.3.4 Handling notches
        8.3.5 Mis-insertion protection
        8.3.6 Stacking features
        8.3.7 Label area of the rear side
        8.3.8 Central window
        8.3.9 Sliding door
        8.3.10 Case opening
   8.4 Write-inhibit mechanism
   8.5 Flexibility of the case
        8.5.1 Requirements
        8.5.2 Procedure
   8.6 Tape reel
        8.6.1 Locking mechanism
        8.6.2 Axis of rotation of the reel
        8.6.3 Reel flanges
        8.6.4 Metallic insert
        8.6.5 Toothed rim
        8.6.6 Hub of the reel
        8.6.7 Relative positions of hub and case
        8.6.8 Characteristics of the toothed rim
   8.7 Magnetic tape
        8.7.1 Tape wind
        8.7.2 Wind tension
        8.7.3 Circumference of the tape reel
        8.7.4 Moment of inertia
   8.8 Leader pin assembly
        8.8.1 Leader pin assembly dimensions
        8.8.2 Leader tape attachment to leader pin assembly
        8.8.3 Latching the leader pin assembly in the case
        8.8.4 Mechanism and tape exit keepout area
   8.9 LTO CM
   8.10 Areas reserved for cartridge presence sensing
   8.11 Handling grips and insertion indicator
        8.11.1 Side grips
        8.11.2 Insertion indicator
        8.11.3 Top grip
        8.11.4 Bottom grip
   8.12 Pad Printing Areas
   8.13 Opacity
Section 3 - Requirements for the Unrecorded Tape
9 Mechanical, physical and dimensional
   characteristics of the tape
   9.1 Materials
   9.2 Tape length
        9.2.1 Length of magnetic tape
        9.2.2 Length of leader tape
        9.2.3 Length of splicing tape
   9.3 Tape Width
        9.3.1 Width of magnetic tape
        9.3.2 Width of leader tape
        9.3.3 Width of splicing tape
        9.3.4 Procedure
   9.4 Tape Thickness
        9.4.1 Procedure
   9.5 Longitudinal curvature
        9.5.1 Procedure
   9.6 Edge Quality
        9.6.1 Edge deviation
   9.7 Tape flatness
        9.7.1 Cupping
        9.7.2 Curl/Twist
   9.8 Coating adhesion
        9.8.1 Procedure
   9.9 Layer-to-layer adhesion
        9.9.1 Requirement
        9.9.2 Procedure
   9.10 Coefficient of friction
        9.10.1 Requirement
        9.10.2 Procedure for the measurement of the
               dynamic friction between the magnetic
               surface and the back surface
        9.10.3 Procedure for the measurement of the
               dynamic friction between the back surface
               and SS-310 stainless steel
        9.10.4 Procedure for the measurement of the
               dynamic friction between the magnetic
               surface and AlO[2]/TiC ceramic
   9.11 Surface quality
        9.11.1 Surface roughness
   9.12 Abrasivity
   9.13 Tensile strength
        9.13.1 Breaking strength
        9.13.2 Offset yield strength
   9.14 Longitudinal compliance
        9.14.1 Procedure
   9.15 Residual elongation
        9.15.1 Requirement
        9.15.2 Procedure
   9.16 Flexural rigidity
        9.16.1 Requirement
        9.16.2 Procedure
   9.17 Transverse dimensional stability
   9.18 Electrical resistance of coated surfaces
        9.18.1 Requirement
        9.18.2 Procedure
10 Magnetic Recording Characteristics
   10.1 General
   10.2 Test conditions
   10.3 Optimum Recording Current
   10.4 Signal amplitude
   10.5 Resolution
   10.6 Overwrite
        10.6.1 Requirement
   10.7 Ease of erasure
   10.8 Broad Band Signal-to-Noise Ratio
        10.8.1 Requirement
   10.9 Tape quality
        10.9.1 Missing pulses
        10.9.2 Missing pulse zone
Section 4 - Requirements for an Interchanged Tape
11 Method of recording servo bands
   11.1 General
   11.2 Servo bands
        11.2.1 Servo stripes
        11.2.2 Servo bursts
        11.2.3 Servo frames
        11.2.4 Servo signal amplitude
        11.2.5 Servo signal polarity
        11.2.6 Servo defects
   11.3 Servo frame encoding
        11.3.1 Method of encoding position and manufacturer's
               data
        11.3.2 LPOS word construction
        11.3.3 Tape manufacturer encoding
        11.3.4 Cross tape identification
   11.4 Servo band location
   11.5 Servo band pitch
   11.6 Nominal servo locations
   11.7 Long-term average servo location
12 Method of recording data tracks
   12.1 Physical recording density
   12.2 Nominal bit cell length
   12.3 Long-term average bit cell length
   12.4 Short-term Average Bit Cell Length (STA)
   12.5 Rate of change of the STA
   12.6 Bit shift
   12.7 Recording performance test conditions
   12.8 Track sequence addressing
   12.9 Location of data tracks
   12.10 Track width
   12.11 Adjacent track pitch
   12.12 Azimuth
   12.13 Total character skew
   12.14 Channel Layout
13 Format
   13.1 General
   13.2 Protected Record
   13.3 Processed Protected Record Sequence
         13.3.1 Control Symbols
         13.3.2 End Marker
         13.3.3 Access Points
         13.3.4 Alignment and append points
   13.4 Data Set
         13.4.1 Format Identification Data Set (FID)
         13.4.2 User Data Set
         13.4.3 EOD Data Set
         13.4.4 Housekeeping Data Set
   13.5 Data Set Information Table (DSIT)
         13.5.1 Drive Manufacturer Use
         13.5.2 Drive Manufacturer Use C1
         13.5.3 Reserved
         13.5.4 Drive Manufacturer's Identity
         13.5.5 Data Set number
         13.5.6 Valid Data Length
         13.5.7 Access Point Offset
         13.5.8 Total Records
         13.5.9 Total File Marks
         13.5.10 Record Count
         13.5.11 File Mark Count
         13.5.12 Thread Count
         13.5.13 Data Set Type
         13.5.14 Data Set Flags
         13.5.15 Thread Write Pass
         13.5.16 Tape Write Pass
   13.6 ECC
         13.6.1 Sub Data Set
         13.6.2 C1 Sub Data Set
         13.6.3 ECC Encoded Sub Data Set
         13.6.4 Codeword Pair designation
   13.7 Codeword Quads (CQ)
         13.7.1 Codeword Pair Header
         13.7.2 First Codeword Pair
         13.7.3 Second Codeword Pair
   13.8 Allocation of CQs to Logical Tracks
   13.9 Data randomisation
   13.10 RLL encoding
14 Recording of data on tape
   14.1 Synchronised Data Set
         14.1.1 Data Set Separator (DSS)
         14.1.2 VFO Field 1
         14.1.3 VFO Field 2
         14.1.4 Synchronised Codeword Quad (SCQ)
   14.2 Write equalisation bit encoding
   14.3 Writing cells on tape
15 Regions on tape
   15.1 Logical Points and regions
   15.2 Calibration Region
   15.3 User Data Region
   15.4 Interrupted Data Sets
   15.5 Repeated CQ Sets
   15.6 Amble CQs
   15.7 Beginning of Wrap (BOW)
   15.8 End of Wrap (EOW)
   15.9 Appending and Overwriting
   15.10 Servo Tracking Faults
Annexes Page
A - Measurement of Bit Shift
B - Measurement of Broad Band Signal-to-Noise Ratio
C - Tape Abrasivity Measurement Procedure
D - LTO Cartridge Memory
E - Flexural Rigidity Procedure
F - LTO CM Electrical Surface
G - Recommendation for transportation
H - Inhibitor Tape
I - Vendor Code Lists

States the physical and magnetic characteristics of magnetic tape cartridges, using magnetic tape 12,65 mm wide so as to provide physical interchange of such cartridges between drives and also states the quality of the recorded signals, the recording method and the recorded format, thereby allowing data interchange between drives by means of such cartridges.