---- - -~ - ~-~-:-:-::-------~------ TANDBERG DATA == TDC 3600 SERIES " STREAMING TAPE CARTRIDGE DRIVES ~. l r Toe 3620/3640/3660 Reference Manual Table of Contents o. Preface ...................................................................................................................., 0·1 1. About this Manual .................................................................................................. 1·1 1.1. Definitions ........................................................................................................... 1 ·1 1.2. Introduction to this Manual .................................................................................. 1-' 1.3. Additional Documentation ................................................................................... '·2 2. Introduction to the Drive ....................................................................................... 2·1 2.1. Summary ............................................................................................................. 2·' 2.2. General Drive Description ................................................................................... 2·1 2.3. Tape Format and Drive Operation ...................................................................... 2·3 2.4 Drive Block Diagram with Description ................................................................. 2·5 2.5. The Formatter Functions .................................................................................... 2·6 2.6. Interface to Host .......... .............. ............................................ ................... .......... 2-7 3. Ffroduct Specifications .......................................................................................... 3·1 31. Mechanical Dimensions and Weight ................................................................... 3-1 3.2. Power Requirements .......................................................................................... 3-1 3.3. Environmental Specifications .............................................................................. 3·2 3.31. Temperature and Relative Humidity .............................................................. 3·2 3.3.2. Temperature Variation ................................................................................... 3-3 3.33 Atmospheric Pressure .................................................................................... 3·3 3.34. Vibration ......................................................................................................... 3·3 3.3.5. Impact and Shock .......................................................................................... 3-3 34. Product Performance Specifications ................................................................... 3-4 3.4.1. Audible Noise ................................................................................................. 3-4 3.4.2. Radiated Electromagnetic Interference .......................................................... 3-4 3.4.3. Susceptibility to Electromagnetic Interference ............................................... 3-4 3.4.4. Static Discharge ............................................................................................. 3-4 3.4.5. Safety Standard ............................................................................................. 3-4 3.4.6. Mean Time to Repair ..................................................................................... 3-4 3.5. Product Reliability ............................................................................................... 3·5 3.5.1. Electronics MTBF ........................................................................................... 3-5 3.5.2. Mechanics MTTF .... ........................ ........ ...... .................. ........ .................. ..... 3-5 3.5.3. Useful life Cycle ............................................................................................ 3-5 3.6. Functional Specifications .................................................................................... 3-6 3.6.1. Media ............................................................................................................. 3-6 3.6.2. Track Width and location .............................................................................. 3-6 3.6.3. Head Specifications ....................................................................................... 3-9 3.6.4. Tape Movement ............................................................................................. 3-9 3.6.5. Recording Specifications ............................................................................. 3·10 3.6.6. Storage Capacity ......................................................................................... 3-11 3.6.7. Head Moving Mechanism ............................................................................ 3-11 3.6.8. Capstan System .......................................................................................... 3-11 3.6.9. Tape Sensor System ................................................................................... 3-11 3.6.10. Electronics ................................................................................................... 3-12 4. Mounting Specifications ....................................................................................... 4·1 4.1. General Mounting Information ............................................................................. 4-1 4.2. Strap Setting/Selecting Drive Number ................................................................ 4-3 4.2.1. Selecting Drive Number ................................................................................. 4·3 4.2.2. EnablelDisable Bus Parity Checking ............................................................. 4-4 4.2.3. External SCSI·bus Termination ..................................................................... 4-4 4.2.4. Serialln/Out Communication ......................................................................... 4·5 4.2.5. Test Functions ............................................................................................... 4·5 4.3. SCSI·Bus Interface Configuration ....................................................................... 4-6 4.4. Heat Dissipation .................................................................................................. 4-7 i 5. Data Reliability ....................................................................................................... 5-1 5.1. Summary ............................................................................................................. 5·1 5.2. General Introduction ............................................................................................ 5·1 5.3. Write Mode .......................................................................................................... 5·2 5.4. Read Mode ......................................................................................................... 5·3 5.5. Cartridge Conditioning ......................................................................................... 5-4 6. Track, Tape-fonnat and Encoding Specifications .............................................. 6-1 6.1. Summary ............................................................................................................. 6-1 6.2. Track Specifications ............................................................................................ 6-1 6.3. Track Format. OIC-24, OIC-120 and OIC-150 .................................................... 6-4 6.4. Recording Method .............................................................................................. 6-4 6.5. Data Encoding .............................................................. :..................................... 6-4 6.6. Recording Sequence ........................ : ................................................................. 6-6 6.7. Block Layout OIC-11 and OIC-24/0IC-120/0IC-150 .......................................... 6-7 6.7.1. Preamble ........................................................................................................ 6-7 6.7.2. Block Marker .................................................................................................. 6-8 6.7.3. Data ................................................................................................................ 6-8 6.7.4. Block Address ................................................................................................ 6-9 6.7.5. CRC (Cyclic Redundancy Check) ............................................................... 6-10 6.7.6. Post amble .................................................................................................... 6-10 6.8. Rewriting of Blocks ...................... : ..................................................................... 6·11 6.9. File Mark Blocks ............................................................................................... 6-12 6.10. Control Blocks ................................................................................................... 6-13 6.11. Gaps ................................................................................................................. 6-13 6.12. Reference Burst ................................................................................................ 6-14 6.13. Termination after Underrun ............................................................................... 6-14 6.14. Data Append