Rear View of Master Control Panel Wiring, San Francisco State College (Updated two months ago)
You can view this bundle in the SFSU Over the Years collection area.
The back side of a master control panel shows exposed wiring, terminal connections, and control components used to manage and synchronize analog systems. The image highlights the internal architecture of electronic equipment and the manual configuration required for operation and experimentation.
Tags: historic technology
Added to SFSU Over the Years on July 31, 2026.
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Information
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Identifier:
TP-ATA-1872
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Context:
<h5><strong data-start="441" data-end="459">Wiring Harness</strong></h5>
<ul style="caret-color: #000000; color: #000000; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" data-start="460" data-end="786">
<li data-start="460" data-end="636">
<p data-start="462" data-end="636">The <strong data-start="466" data-end="491">tightly bundled wires</strong> leading to a central <strong data-start="513" data-end="531">terminal strip</strong> is typical for master control panels—allowing external connections to be routed cleanly from the inside.</p>
</li>
<li data-start="637" data-end="786">
<p data-start="639" data-end="671">Those bundles likely connect to:</p>
<ul data-start="674" data-end="786">
<li data-start="674" data-end="702">
<p data-start="676" data-end="702">Other simulation equipment</p>
</li>
<li data-start="705" data-end="740">
<p data-start="707" data-end="740">Signal amplifiers or conditioners</p>
</li>
<li data-start="743" data-end="786">
<p data-start="745" data-end="786">The CRT monitor or oscilloscope interface</p>
</li>
</ul>
</li>
<li><span style="caret-color: #000000; color: #000000; font-family: -webkit-standard; font-size: medium; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; display: inline !important; float: none;">The backs of </span><strong style="caret-color: #000000; color: #000000; font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" data-start="850" data-end="866">panel meters can be clearly seen</strong><span style="caret-color: #000000; color: #000000; font-family: -webkit-standard; font-size: medium; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; display: inline !important; float: none;">, as well as </span><strong style="caret-color: #000000; color: #000000; font-style: normal; font-variant-caps: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" data-start="879" data-end="904">trimpots or resistors</strong><span style="caret-color: #000000; color: #000000; font-family: -webkit-standard; font-size: medium; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; display: inline !important; float: none;"> soldered directly to terminals—used for fine calibration of each circuit.</span></li>
</ul>
<h5><strong data-start="988" data-end="1007">Terminal Blocks</strong></h5>
<ul style="caret-color: #000000; color: #000000; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" data-start="1008" data-end="1235">
<li data-start="1008" data-end="1104">
<p data-start="1010" data-end="1104">The bottom section houses neat <strong data-start="1041" data-end="1066">terminal screw strips</strong>—textbook 1960s analog control design.</p>
</li>
<li data-start="1105" data-end="1235">
<p data-start="1107" data-end="1235">Wires are color-coded or labeled for system interfacing—helping operators trace signal paths for diagnostics or experimentation.</p>
</li>
</ul>
<div> This would’ve been <strong data-start="1603" data-end="1666">part of a student-visible demo or instructor-led experiment</strong>, allowing:</div>
<div>
<ul style="caret-color: #000000; color: #000000; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" data-start="1678" data-end="1837">
<li data-start="1678" data-end="1726">
<p data-start="1680" data-end="1726">Real-time <strong data-start="1690" data-end="1726">manipulation of analog variables</strong></p>
</li>
<li data-start="1727" data-end="1771">
<p data-start="1729" data-end="1771">System <strong data-start="1736" data-end="1771">monitoring and fault simulation</strong></p>
</li>
<li data-start="1772" data-end="1837">
<p data-start="1774" data-end="1837">Possibly even <strong data-start="1788" data-end="1817">troubleshooting exercises</strong> for control systems</p>
</li>
</ul>
<p> </p>
<p><strong>Credits:</strong> </p>
<p>Some technical descriptions and historical interpretations were developed with the assistance of ChatGPT, an AI language model by OpenAI.</p>
</div>
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Geographic Coverage:
San Francisco, CA
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Type:
Still Image
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Format:
Negative
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Source:
San Francisco State University Archives
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Rights:
Public
Content
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Version history
- Import from CMS.
- Update by DIVA Digitization Team two months ago
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- Update by DIVA Digitization Team five months ago
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- Update by DIVA Digitization Team a year ago
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