https://gunkies.org/index.php?action=history&feed=atom&title=TU20_Tape_Transport
TU20 Tape Transport - Revision history
2026-10-30T16:56:46Z
Revision history for this page on the wiki
MediaWiki 1.43.11
https://gunkies.org/w/index.php?title=TU20_Tape_Transport&diff=33311&oldid=prev
Jnc: Move image into infobox, now that we can scale it
2024-02-08T14:53:47Z
<p>Move image into infobox, now that we can scale it</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 14:53, 8 February 2024</td>
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<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">[[Image: TU20.jpg|left|thumb|110px|TU20 drive in rack]]</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Infobox Tape drive</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Infobox Tape drive</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| name = TU20</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| name = TU20</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">| image = TU20.jpg</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">| imgwidth = 100px</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">| caption = TU20 drive in rack</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| tape speed = 45 ips (Forward/Reverse)<br>160 ips max (Rewind)</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| tape speed = 45 ips (Forward/Reverse)<br>160 ips max (Rewind)</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| size = 22"W x 27"D x 69"H (in cabinet)</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| size = 22"W x 27"D x 69"H (in cabinet)</div></td></tr>
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Jnc
https://gunkies.org/w/index.php?title=TU20_Tape_Transport&diff=33302&oldid=prev
Jnc: Temporary fix until I can figure out how to provide a default value to a template argument
2024-02-07T22:37:06Z
<p>Temporary fix until I can figure out how to provide a default value to a template argument</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 22:37, 7 February 2024</td>
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<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Image: TU20.jpg|left|thumb|110px|TU20 drive in rack]]</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Infobox Tape drive</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Infobox Tape drive</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">| image = TU20sml.jpg</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| name = TU20</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| name = TU20</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">| caption = TU20 drive</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| tape speed = 45 ips (Forward/Reverse)<br>160 ips max (Rewind)</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| tape speed = 45 ips (Forward/Reverse)<br>160 ips max (Rewind)</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| size = 22"W x 27"D x 69"H (in cabinet)</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| size = 22"W x 27"D x 69"H (in cabinet)</div></td></tr>
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Jnc
https://gunkies.org/w/index.php?title=TU20_Tape_Transport&diff=33301&oldid=prev
Jnc: downsize img
2024-02-07T22:23:27Z
<p>downsize img</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 22:23, 7 February 2024</td>
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<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>| image = <del style="font-weight: bold; text-decoration: none;">TU20</del>.jpg</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>| image = <ins style="font-weight: bold; text-decoration: none;">TU20sml</ins>.jpg</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| name = TU20</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| name = TU20</div></td></tr>
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https://gunkies.org/w/index.php?title=TU20_Tape_Transport&diff=33296&oldid=prev
Jnc: A good start
2024-02-07T19:19:42Z
<p>A good start</p>
<p><b>New page</b></p><div>{{Infobox Tape drive<br />
| image = TU20.jpg<br />
| name = TU20<br />
| caption = TU20 drive<br />
| tape speed = 45 ips (Forward/Reverse)<br>160 ips max (Rewind)<br />
| size = 22"W x 27"D x 69"H (in cabinet)<br />
| weight = 600 lbs (ditto)<br />
}}<br />
<br />
The '''TU20''' was a [[magnetic tape drive]] from [[Digital Equipment Corporation|DEC]]; it required a [[device controller|controller]] to connect to its host machine. The transport section was [[Original Equipment Manufacturer|OEMed]] from the DATAMEC division of [[Hewlett-Packard]]. It was used with the [[PDP-8]] (with the [[TC58 Tape Control Unit]]), [[PDP-9]] (with the [[TC59 Tape Control Unit]]), the [[PDP-15]] (ditto), and the [[PDP-10]] (with the [[TM10 Magnetic Tape Control]]).<br />
<br />
It could store 5-23 Mbytes on a 2400' 0.5" wide [[magnetic tape]] carried on a standard 10-1/2" reel. The basic TU20 supported 7-track operation at 200, 556, and 800 BPI; the '''TU20A''' was the 9-track at 800 bpi version. <br />
<br />
The tape transport utilizes a single pinch roller capstan, with (somewhat unusual horizontal) vacuum columns. The TU20 drive contains a fair amount of [[electronics]], in the form of [[FLIP CHIP]] modules in a 19" wide [[wire-wrap]] [[backplane]] (mounted horizontally in the base of the cabinet).<br />
<br />
{{semi-stub}}<br />
<br />
==External links==<br />
<br />
* [http://www.bitsavers.org/pdf/dec/magtape/tu20/DEC-00-I4AB-D_TU20_Tape_Transport_Maintenance_Manual_Jan71.pdf TU20 Tape Transport Maintenance Manual] (DEC-OO-I4AB-D)<br />
<br />
[[Category: DEC Tape Drives]]</div>
Jnc