The DEC TU45 Tape System
Date: 1977. Manual loading. Direct-drive reel motors, servo-controlled single capstan, filtered positive pressurized tape compartment, vacuum type tape cleaner. On-the-fly error correction in 1600 bpi mode only: single-track droput, dual gap, read-after-write.
Storage medium: 1/2 inch-wide industry standard magnetic tape Capacity / tape reel: 40 million characters at 1600 bpi Data transfer speed: 120000 cps at 1600 bpi Drivers/controller: 8 max Number of tracks: 9 Recording density: 1600 bpi or 800 bpi, program selectable Interrecord gap: 0.5 inch, minimum Read/write speed: 75 inch/sec Rewind speed: 250 inch/sec Rewind time: 115 sec Tape length: 2400 feet Reel diameter: 10.5 inch Max drives/system: 8 Weight per drive: 640 pounds