Difference between revisions of "TU77 Magnetic Tape Transport"
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| caption = TU77 drive | | caption = TU77 drive | ||
| − | | tape speed = 125 ips ( | + | | controller = [[TM03 magtape controller|TM03]] |
| − | | size = | + | | tape speed = 125 ips (forward/reverse) |
| + | | tape density = 1600 bpi (PE)<br>800 bpi (NRZI) | ||
| + | | rewind speed = 440 ips max | ||
| + | | rewind time = 65 secs (nominal, 2,400')<br>80 secs (maximum) | ||
| + | | size = 26.5"W x 32"D x 60"H (in cabinet) | ||
| weight = 640 lbs (master) | | weight = 640 lbs (master) | ||
| + | | power = 1.9 KVA (standby, maximum)<br>2.7 KVA (operating, maximum) | ||
| + | | year introduced = 1979 | ||
}} | }} | ||
| − | The '''TU77''' was an auto-loading [[magnetic tape drive]] from [[Digital Equipment Corporation|DEC]]. It required a [[device controller|controller]] to connect to the [[MASSBUS]] on its host machine | + | The '''TU77''' was an auto-loading high-performance [[magnetic tape drive]] from [[Digital Equipment Corporation|DEC]]. It required a [[device controller|controller]] to connect to the [[MASSBUS]] on its host machine; it was used with the [[TM03 magtape controller|TM03]], which was normally housed in the cabinet of one of the attached TU77 drives (designated as the 'master'). Up to three additional plain TU77 drives (designated as 'slaves') could be connected to that TM03. |
| − | It could store 23-46 Mbytes on a 2400' 0.5" wide [[magnetic tape]] carried on a standard 10-1/2" reel. The TU77 supported 9-track operation at 800 and 1600 BPI. The tape transport utilizes a single capstan, with twin vertical vacuum columns. | + | It could store 23-46 Mbytes on a 2400' 0.5" wide [[magnetic tape]] carried on a standard 10-1/2" reel. The TU77 supported 9-track operation at 800 BPI (using [[Non Return to Zero Inverted|NRZI]] [[encoding]]) and 1600 BPI (using [[Phase Encoding|PE]]). The tape transport utilizes a single capstan, with twin vertical vacuum columns. |
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* [http://www.bitsavers.org/pdf/dec/magtape/tu77/ TU77] - documentation at [[Bitsavers]]- | * [http://www.bitsavers.org/pdf/dec/magtape/tu77/ TU77] - documentation at [[Bitsavers]]- | ||
** [http://www.bitsavers.org/pdf/dec/magtape/tu77/TU77_UsersGuide.pdf TU77 Magnetic Tape Transport User's Guide] (EK-TU77-UG-001) | ** [http://www.bitsavers.org/pdf/dec/magtape/tu77/TU77_UsersGuide.pdf TU77 Magnetic Tape Transport User's Guide] (EK-TU77-UG-001) | ||
| + | ** [http://www.bitsavers.org/pdf/dec/magtape/tu77/EK-1TU77-TM-002_TechJul81.pdf TU77 Magnetic Tape Transport Technical Manual - Volume 1] (EK-1TU77-TM-002)- drawings and schematics, no text | ||
| + | ** [http://www.bitsavers.org/pdf/dec/magtape/tu77/EK-2TU77-TM-002_TechJan84.pdf TU77 Magnetic Tape Transport Technical Manual - Volume 2] (EK-2TU77-TM-002) | ||
| + | * [https://www.computerhistory.org/collections/catalog/102733547 TU-77 tape drive] - at the [[Computer History Museum|CHM]], includes images | ||
| − | [[Category: | + | [[Category: MASSBUS Tape Drives]] |
Latest revision as of 19:39, 21 April 2024
| TU77 | |
 TU77 drive | |
| Drive Controller(s): | TM03 |
|---|---|
| Tape density: | 1600 bpi (PE) 800 bpi (NRZI) |
| Tape speed: | 125 ips (forward/reverse) |
| Rewind speed: | 440 ips max |
| Rewind time: | 65 secs (nominal, 2,400') 80 secs (maximum) |
| Power consumption: | 1.9 KVA (standby, maximum) 2.7 KVA (operating, maximum) |
| Size: | 26.5"W x 32"D x 60"H (in cabinet) |
| Weight: | 640 lbs (master) |
| Year Introduced: | 1979 |
The TU77 was an auto-loading high-performance magnetic tape drive from DEC. It required a controller to connect to the MASSBUS on its host machine; it was used with the TM03, which was normally housed in the cabinet of one of the attached TU77 drives (designated as the 'master'). Up to three additional plain TU77 drives (designated as 'slaves') could be connected to that TM03.
It could store 23-46 Mbytes on a 2400' 0.5" wide magnetic tape carried on a standard 10-1/2" reel. The TU77 supported 9-track operation at 800 BPI (using NRZI encoding) and 1600 BPI (using PE). The tape transport utilizes a single capstan, with twin vertical vacuum columns.
External links
- TU77 - documentation at Bitsavers-
- TU77 Magnetic Tape Transport User's Guide (EK-TU77-UG-001)
- TU77 Magnetic Tape Transport Technical Manual - Volume 1 (EK-1TU77-TM-002)- drawings and schematics, no text
- TU77 Magnetic Tape Transport Technical Manual - Volume 2 (EK-2TU77-TM-002)
- TU-77 tape drive - at the CHM, includes images
