INCITS/ISO/IEC 22050 : 2002

Section 1 - General
1 Scope
2 Conformance
   2.1 Magnetic tape cartridge
   2.2 Generating system
   2.3 Receiving system
3 Normative references
4 Terms and 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 foreword
   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
   4.50 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
   8.4 Write-inhibit mechanism
   8.5 Flexibility of the case
   8.6 Tape reel
   8.7 Magnetic tape
   8.8 Leader pin assembly
   8.9 LTO CM
   8.10 Areas reserved for cartridge presence sensing
   8.11 Handling grips and insertion indicator
   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
   9.3 Tape Width
   9.4 Tape Thickness
   9.5 Longitudinal curvature
   9.6 Edge Quality
   9.7 Tape flatness
   9.8 Coating adhesion
   9.9 Layer-to-layer adhesion
   9.10 Coefficient of friction
   9.11 Surface quality
   9.12 Abrasivity
   9.13 Tensile strength
   9.14 Longitudinal compliance
   9.15 Residual elongation
   9.16 Flexural rigidity
   9.17 Transverse dimensional stability
   9.18 Electrical resistance of coated surfaces
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
   10.7 Ease of erasure
   10.8 Broad Band Signal-to-Noise Ratio
   10.9 Tape quality
Section 4 - Requirements for an Interchanged Tape
11 Method of recording servo bands
   11.1 General
   11.2 Servo bands
   11.3 Servo frame encoding
   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
   13.4 Data Set
   13.5 Data Set Information Table (DSIT)
   13.6 ECC
   13.7 Codeword Quads (CQ)
   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
   14.2 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
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 interface
G - Recommendations for transportation
H - Inhibitor Tape
I - Vendor code lists

Describes 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. It also specifies the quality of the recorded signals, the recording method and the recorded format, thereby allowing data interchange between drives by means of such cartridges.