View source for TDC 3640

The '''TANDBERG TDC 3640''' is a [[wikipedia:quarter-inch_cartridge|QIC]]-120 SCSI tape streamer, used in some ND systems.
It can record up to 125 megabytes on a cartridge.

== Tape format ==
* The QIC-120 format used by the 3640 model uses a 1/4" 15-track 125MB DC6150 cartridge

== Electronics ==
* Two printed circuit boards: Mainboard and Sensorboard
* Drive electronics: [http://controls.ame.nd.edu/microcontroller/main/node3.html Motorola 68HC11] plus two custom ASICs
* 64KB read/write RAM buffer
* I/F to host: SCSI standard, revision 17B
* Power requirements: +5V 250mA, +12V up to 3.9A peak (start-up) (2.25W (idle) - 15W (motor running)

== Recommended media ==
* QIC-24 '''3M DC600A''' (60MB) or QIC-120 '''3M DC600XTD''' (125MB) tapes, 183m/600-foot
* Alternatively, other high quality tapes with equal mechanical tolerances, certified for 12500 FRPI ('Flux Reversals Per Inch')
The documentation is pretty insistent about this.

== References ==
* [http://bitsavers.informatik.uni-stuttgart.de/pdf/tandbergData/TDC_3620_3640_3660_Reference_Manual.pdf Tandberg 3620/3640/3660 manual on bitsavers]
* [http://www.qic.org/html/standards/12x.x/qic120dc.pdf QIC-120-DC on qic.org]

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[[Category:Tandberg]]