TU45 magtape drive
From Computer History Wiki
| TU45 | |
 TU45 drive | |
| Manufacturer: | DEC |
|---|---|
| Drive Controller(s): | TM03 |
| Media: | standard half-inch tape |
| Tape density: | 1600 or 800bpi |
| Tape speed: | 75 inches/sec |
| Rewind time: | 115 seconds (nominal, 2,400' reel) |
| Power consumption: | 75(standby, unloaded) 325 (standby, loaded) 450 (operating) 850 (maximum) |
| Size: | 24"H x 19"W x 20"D |
| Weight: | 155 pounds (maximum) |
The TU45 was a manually-loaded nine-track magnetic tape drive produced by PERTEC for DEC.
Used 1/2 inch-wide industry standard magnetic tape with a capacity of 40 megabytes at 1600 bpi per spool. Data transfer speed of 120 KB/sec at 1600 bpi. Maximum of 8 drives per device controller. Read and write speed of 75 inch/sec; rewind speed of 250 inch/sec. It could use tapes of any size up to 2400' reels.
The recording density, of either 1600 bpi (using PE encoding) or 800 bpi (using NRZI encoding), was selectable by software.
The TU45 is normally used with a TM03 controller, which is a MASSBUS controller; a TM03 can handle up to eight TU45 drives.
The TU45/TM03 with an RH780 Massbus Adapter of the VAX-11/780 is denominated as a TEU45.
