【Hitachi】 H-8487-A10 Open Reel Magnetic Tape Unit

The H-8487-A10 was a medium-speed open reel magnetic tape unit which kept the same performance as previous equipment, while greatly reducing size and weight (1/3 of the previous values), conserving energy (1/2 of the previous usage) and eliminating space used by the controller. This was achieved by miniaturizing the running system, using general-purpose processors in the magnetic tape unit (drive) and developing special-purpose LSI. The unit was first shipped in October 1980.
Notable features of this unit were:

1) Greater compactness and lighter weight
The system was smaller and lighter than previous systems, with 25% less floor area, 20% lower height and 65% lower weight.
2) Greater energy conservation
Power consumption of the unit was examined in detail, and dramatically reduced (40–50%) compared to previous models. This was done by selecting optimal systems and parts.
3) High-reliability
Special-purpose LSI improved reliability, and better maintainability was achieved by improving diagnostic functions.

In addition to the H-8487-A10, Hitachi also developed the H-8486-A10 and H-8467-A10 as units in the same family.

Main Specifications of H-8487-A10/H-8486-A10/H-8467-A10 Magnetic Tape Units
Model name H-8487-A10 H-8487-1
H-8486-A10 H-8467-A10
Magnetic tape used Width 1/2inch,Length 2400feet
Number of tracks 9
Recording density(BPI)
(Recording system)
IBG (inch) 0.3/0.6 0.6
Tape speed (inch/s) 125 80 125
Data transfer speed (KB/s) 780/200 500/128 200/100
Tape drive system Single capstan,vacuum column system
Rewind time (s) 80 45 110 80
Power consumption (KVA) 1.5 2.8 1.5 1.5
External dimensions
Weight (kg) 150 450 150 150

*1: Includes controller

H-8487-A10 Open Reel Magnetic Tape Unit