{"id":1887,"date":"2017-04-18T10:47:10","date_gmt":"2017-04-18T10:47:10","guid":{"rendered":"http:\/\/avitech.com.au\/?page_id=1887"},"modified":"2017-04-18T10:47:57","modified_gmt":"2017-04-18T10:47:57","slug":"digital-electronics-qbus-cabinet","status":"publish","type":"page","link":"https:\/\/avitech.com.au\/?page_id=1887","title":{"rendered":"Digital Electronics QBUS Cabinet"},"content":{"rendered":"<p><a href=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112333_1492508846884_resized.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1892\" data-permalink=\"https:\/\/avitech.com.au\/?attachment_id=1892\" data-orig-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112333_1492508846884_resized.jpg?fit=1632%2C918&amp;ssl=1\" data-orig-size=\"1632,918\" data-comments-opened=\"1\" data-image-title=\"20170324_112333_1492508846884_resized\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112333_1492508846884_resized.jpg?fit=900%2C506&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112333_1492508846884_resized.jpg?resize=300%2C169&#038;ssl=1\" alt=\"\" width=\"300\" height=\"169\" class=\"alignright size-medium wp-image-1892\" srcset=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112333_1492508846884_resized.jpg?resize=300%2C169&amp;ssl=1 300w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112333_1492508846884_resized.jpg?resize=768%2C432&amp;ssl=1 768w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112333_1492508846884_resized.jpg?resize=1024%2C576&amp;ssl=1 1024w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112333_1492508846884_resized.jpg?resize=150%2C84&amp;ssl=1 150w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112333_1492508846884_resized.jpg?w=1632&amp;ssl=1 1632w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>In my collection I have this rather interesting third-party QBUS system.<\/p>\n<p>The manufacturer was an Australian company called &#8220;Digital Electronics&#8221;.<\/p>\n<p>This appears to have been specifically designed and built for lab A\/D work.  The front panel has various analogue I\/O connectors.<\/p>\n<p>At the top of the rack is a separate enclosure housing an 8&#8243; floppy drive and an 8&#8243; SMD hard drive.<\/p>\n<p>The QBUS rack is accessed via the rear door. It is hinged on the left side, and swings out to give good access to the chassis.<\/p>\n<p>I&#8217;ve not yet identified all the cards in it, but here is a list of them (as best I currently understand them):<\/p>\n<ul>\n<li>Row 1 Left: M8192\n<li>Row 1 Right: Webster SMSV11-P\/03 (2 banks of MB81256 RAM)<\/li>\n<li>Row 2: Emulex SC02<\/li>\n<li>Row 3 Left: Unmarked card with 40 pin connector (see photo). ED on bottom edge<\/li>\n<li>Row 3 Right: Data Translation DT5712-E (A\/D card?)<\/li>\n<li>Row 4: DEC M7950<\/li>\n<li>Row 5 Left: GTSC 304B (4-port SLU) (see photo)<\/li>\n<li>Row 5 Right: Unidentified board. Blue XTAL on top.  \u201cModel 306\u201d sticker underneath (see photo)<\/li>\n<li>Row 6 Left: GRC-DRV11 (see photo)<\/li>\n<li>Row 6 Right: M7941<\/li>\n<li>Row 7 Left: Empty<\/li>\n<li>Row 7 Right: Empty<\/li>\n<li>Row 8 Left: General Robotics TBC P\/N 27-0006-00 (see photo)<\/li>\n<li>Row 8 Right: Empty<\/li>\n<p>The photos below includes pictures of some of the more interesting cards in the above list.<\/p>\n<div data-carousel-extra='{&quot;blog_id&quot;:1,&quot;permalink&quot;:&quot;https:\/\/avitech.com.au\/?page_id=1887&quot;}' id='gallery-1' class='gallery galleryid-1887 gallery-columns-4 gallery-size-thumbnail'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/avitech.com.au\/?attachment_id=1888'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112154_1492508841761_resized.jpg?resize=150%2C150&amp;ssl=1\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112154_1492508841761_resized.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112154_1492508841761_resized.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112154_1492508841761_resized.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" data-attachment-id=\"1888\" data-permalink=\"https:\/\/avitech.com.au\/?attachment_id=1888\" data-orig-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112154_1492508841761_resized.jpg?fit=1632%2C918&amp;ssl=1\" data-orig-size=\"1632,918\" data-comments-opened=\"1\" data-image-title=\"20170324_112154_1492508841761_resized\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112154_1492508841761_resized.jpg?fit=900%2C506&amp;ssl=1\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/avitech.com.au\/?attachment_id=1891'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112328_1492508845534_resized.jpg?resize=150%2C150&amp;ssl=1\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112328_1492508845534_resized.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112328_1492508845534_resized.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112328_1492508845534_resized.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" data-attachment-id=\"1891\" data-permalink=\"https:\/\/avitech.com.au\/?attachment_id=1891\" data-orig-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112328_1492508845534_resized.jpg?fit=918%2C1632&amp;ssl=1\" data-orig-size=\"918,1632\" data-comments-opened=\"1\" data-image-title=\"20170324_112328_1492508845534_resized\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112328_1492508845534_resized.jpg?fit=576%2C1024&amp;ssl=1\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/avitech.com.au\/?attachment_id=1890'><img loading=\"lazy\" decoding=\"async\" width=\"150\" 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data-comments-opened=\"1\" data-image-title=\"20170324_112321_1492508844286_resized\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112321_1492508844286_resized.jpg?fit=900%2C506&amp;ssl=1\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/avitech.com.au\/?attachment_id=1893'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112350_1492508848541_resized.jpg?resize=150%2C150&amp;ssl=1\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112350_1492508848541_resized.jpg?resize=150%2C150&amp;ssl=1 150w, 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class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/avitech.com.au\/?attachment_id=1894'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112407_1492508849957_resized.jpg?resize=150%2C150&amp;ssl=1\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112407_1492508849957_resized.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112407_1492508849957_resized.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112407_1492508849957_resized.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" data-attachment-id=\"1894\" data-permalink=\"https:\/\/avitech.com.au\/?attachment_id=1894\" 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srcset=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112541_1492508851361_resized.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112541_1492508851361_resized.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112541_1492508851361_resized.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" data-attachment-id=\"1895\" data-permalink=\"https:\/\/avitech.com.au\/?attachment_id=1895\" data-orig-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112541_1492508851361_resized.jpg?fit=1632%2C918&amp;ssl=1\" data-orig-size=\"1632,918\" data-comments-opened=\"1\" data-image-title=\"20170324_112541_1492508851361_resized\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_112541_1492508851361_resized.jpg?fit=900%2C506&amp;ssl=1\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/avitech.com.au\/?attachment_id=1899'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113925_1492508856726_resized-e1492511154431.jpg?resize=150%2C150&amp;ssl=1\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113925_1492508856726_resized-e1492511154431.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113925_1492508856726_resized-e1492511154431.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113925_1492508856726_resized-e1492511154431.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" data-attachment-id=\"1899\" data-permalink=\"https:\/\/avitech.com.au\/?attachment_id=1899\" data-orig-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113925_1492508856726_resized-e1492511154431.jpg?fit=1632%2C918&amp;ssl=1\" data-orig-size=\"1632,918\" data-comments-opened=\"1\" data-image-title=\"20170324_113925_1492508856726_resized\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113925_1492508856726_resized-e1492511154431.jpg?fit=900%2C506&amp;ssl=1\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/avitech.com.au\/?attachment_id=1901'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_114415_1492508859240_resized-e1492511195346.jpg?resize=150%2C150&amp;ssl=1\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_114415_1492508859240_resized-e1492511195346.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_114415_1492508859240_resized-e1492511195346.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_114415_1492508859240_resized-e1492511195346.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" data-attachment-id=\"1901\" data-permalink=\"https:\/\/avitech.com.au\/?attachment_id=1901\" data-orig-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_114415_1492508859240_resized-e1492511195346.jpg?fit=1632%2C918&amp;ssl=1\" data-orig-size=\"1632,918\" data-comments-opened=\"1\" data-image-title=\"20170324_114415_1492508859240_resized\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_114415_1492508859240_resized-e1492511195346.jpg?fit=900%2C506&amp;ssl=1\" \/><\/a>\n\t\t\t<\/dt><\/dl><br style=\"clear: both\" \/><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/avitech.com.au\/?attachment_id=1900'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_114148_1492508857896_resized-e1492511175449.jpg?resize=150%2C150&amp;ssl=1\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_114148_1492508857896_resized-e1492511175449.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_114148_1492508857896_resized-e1492511175449.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_114148_1492508857896_resized-e1492511175449.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" data-attachment-id=\"1900\" data-permalink=\"https:\/\/avitech.com.au\/?attachment_id=1900\" data-orig-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_114148_1492508857896_resized-e1492511175449.jpg?fit=1632%2C918&amp;ssl=1\" data-orig-size=\"1632,918\" data-comments-opened=\"1\" data-image-title=\"20170324_114148_1492508857896_resized\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_114148_1492508857896_resized-e1492511175449.jpg?fit=900%2C506&amp;ssl=1\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/avitech.com.au\/?attachment_id=1898'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113712_1492508855733_resized-e1492511131637.jpg?resize=150%2C150&amp;ssl=1\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113712_1492508855733_resized-e1492511131637.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113712_1492508855733_resized-e1492511131637.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113712_1492508855733_resized-e1492511131637.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" data-attachment-id=\"1898\" data-permalink=\"https:\/\/avitech.com.au\/?attachment_id=1898\" data-orig-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113712_1492508855733_resized-e1492511131637.jpg?fit=1632%2C918&amp;ssl=1\" data-orig-size=\"1632,918\" data-comments-opened=\"1\" data-image-title=\"20170324_113712_1492508855733_resized\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113712_1492508855733_resized-e1492511131637.jpg?fit=900%2C506&amp;ssl=1\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/avitech.com.au\/?attachment_id=1897'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113354_1492508854558_resized-e1492511109110.jpg?resize=150%2C150&amp;ssl=1\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113354_1492508854558_resized-e1492511109110.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113354_1492508854558_resized-e1492511109110.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113354_1492508854558_resized-e1492511109110.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" data-attachment-id=\"1897\" data-permalink=\"https:\/\/avitech.com.au\/?attachment_id=1897\" data-orig-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113354_1492508854558_resized-e1492511109110.jpg?fit=1632%2C918&amp;ssl=1\" data-orig-size=\"1632,918\" data-comments-opened=\"1\" data-image-title=\"20170324_113354_1492508854558_resized\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113354_1492508854558_resized-e1492511109110.jpg?fit=900%2C506&amp;ssl=1\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/avitech.com.au\/?attachment_id=1896'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113225_1492508853002_resized-e1492511083766.jpg?resize=150%2C150&amp;ssl=1\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113225_1492508853002_resized-e1492511083766.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113225_1492508853002_resized-e1492511083766.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113225_1492508853002_resized-e1492511083766.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" data-attachment-id=\"1896\" data-permalink=\"https:\/\/avitech.com.au\/?attachment_id=1896\" data-orig-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113225_1492508853002_resized-e1492511083766.jpg?fit=1632%2C918&amp;ssl=1\" data-orig-size=\"1632,918\" data-comments-opened=\"1\" data-image-title=\"20170324_113225_1492508853002_resized\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/04\/20170324_113225_1492508853002_resized-e1492511083766.jpg?fit=900%2C506&amp;ssl=1\" \/><\/a>\n\t\t\t<\/dt><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<p>This page was last updated on 18 April 2017.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In my collection I have this rather interesting third-party QBUS system. The manufacturer was an Australian company called &#8220;Digital Electronics&#8221;. This appears to have been specifically designed and built for lab A\/D work. The front panel has various analogue I\/O connectors. At the top of the rack is a separate enclosure housing an 8&#8243; floppy ..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/avitech.com.au\/?page_id=1887\" title=\"read more...\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1887","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P7xTsk-ur","jetpack-related-posts":[{"id":1664,"url":"https:\/\/avitech.com.au\/?page_id=1664","url_meta":{"origin":1887,"position":0},"title":"QBUS Notes","author":"malcolm","date":"1-February-2017","format":false,"excerpt":"This page captures my rough working notes regarding QBUS systems. You probably won't find anything greatly useful here. It is mainly a place for me to records things that I seem to continually forget the details of! BA11-NC Chassis This is a 9 row 18-bit ABCD chassis. So dual-height cards\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1468,"url":"https:\/\/avitech.com.au\/?page_id=1468","url_meta":{"origin":1887,"position":1},"title":"Pertec T8640A Tape Transport","author":"malcolm","date":"3-January-2017","format":false,"excerpt":"I have a Pertec T8640A Tape Transport that is now working nicely on a QBUS PDP-11 system. While I still have a lot to learn about the operation of magtape systems (and their advantages and limitations), I am now able to successfully \"INItialize\", write to and read from magtapes in\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/01\/20170105_093142-Large-e1483572635195.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/01\/20170105_093142-Large-e1483572635195.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/01\/20170105_093142-Large-e1483572635195.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/01\/20170105_093142-Large-e1483572635195.jpg?resize=700%2C400 2x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/01\/20170105_093142-Large-e1483572635195.jpg?resize=1050%2C600 3x"},"classes":[]},{"id":3623,"url":"https:\/\/avitech.com.au\/?page_id=3623","url_meta":{"origin":1887,"position":2},"title":"Garage Sale on Sat 5 October 2019","author":"malcolm","date":"30-September-2019","format":false,"excerpt":"I'm doing something of a clean out of vintage computer gear, due to downsizing. This Saturday (5 October 2019) from 9am to 5pm. Factory 71, 22 Dunn Crescent, Dandenong Here's a partial list of what will be available (this list will be updated on Friday): The Free Pile DEC Networking\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1657,"url":"https:\/\/avitech.com.au\/?page_id=1657","url_meta":{"origin":1887,"position":3},"title":"QBUS Front Panel Project","author":"malcolm","date":"31-January-2017","format":false,"excerpt":"This project is an Arudino-based front panel for a bare QBUS PDP-11 chassis. It provides the switch and indicator functionality typically found on an early QBUS PDP-11 chassis (such as a BA11-MF or BA11-NC) and does the following: Switches an ATX power supply on and off, to power the PDP-11\u2026","rel":"","context":"With 5 comments","block_context":{"text":"With 5 comments","link":"https:\/\/avitech.com.au\/?page_id=1657#comments"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/01\/20170712_111817-Medium.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/01\/20170712_111817-Medium.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/01\/20170712_111817-Medium.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/01\/20170712_111817-Medium.jpg?resize=700%2C400 2x"},"classes":[]},{"id":2722,"url":"https:\/\/avitech.com.au\/?page_id=2722","url_meta":{"origin":1887,"position":4},"title":"GRC TBC QBUS Board","author":"malcolm","date":"15-October-2017","format":false,"excerpt":"The \"GRC TBC\" is a bootstrap and terminator board designed for PDP-11 QBUS systems. The manufacturer is General Robotics Corporation. The TBC provides the following functionality: Termination for QBUS backplane signals On-board EPROMs (for bootstrap or other purposes) Support for front-panel functionality (run status indicator, enable\/halt switch and LTC switch)\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2017\/10\/grc-tbc-pcb-300x174.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":3697,"url":"https:\/\/avitech.com.au\/?page_id=3697","url_meta":{"origin":1887,"position":5},"title":"UNIX V6 on QBUS PDP-11","author":"malcolm","date":"17-November-2019","format":false,"excerpt":"I've starting playing around with UNIX v6 on the PDP-11. I'm using the \"v6_rl02_unknown\" image, which is discussed and available for download from https:\/\/github.com\/eunuchs\/unix-archive\/tree\/master\/PDP-11\/Boot_Images. This is an RL02 image. It must have a modified kernel, as apparently V6 was not originally distributed on RL02 media. Hardware The hardware used was\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/pages\/1887","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/avitech.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1887"}],"version-history":[{"count":7,"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/pages\/1887\/revisions"}],"predecessor-version":[{"id":3650,"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/pages\/1887\/revisions\/3650"}],"wp:attachment":[{"href":"https:\/\/avitech.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1887"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}