Student Operating Chart Recorder in Electronics Laboratory, San Francisco State College (Updated last month)

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• Identifier: TP-ATA-1837
• Context: <p><strong>What the devices are:</strong></p> <h5><strong data-start="258" data-end="298">1. Strip Chart Recorder (foreground)</strong></h5> <ul data-start="299" data-end="684"> <li data-start="299" data-end="356"> <p data-start="301" data-end="356">This is the wide device with paper threading across it.</p> </li> <li data-start="357" data-end="467"> <p data-start="359" data-end="467">A <strong data-start="361" data-end="385">strip chart recorder</strong> creates <strong data-start="394" data-end="429">a continuous ink trace on paper</strong>, recording voltage changes over time.</p> </li> <li data-start="468" data-end="540"> <p data-start="470" data-end="540">It functions like an oscilloscope but with <strong data-start="513" data-end="539">permanent paper output</strong>.</p> </li> <li data-start="541" data-end="684"> <p data-start="543" data-end="552">Used for:</p> <ul data-start="555" data-end="684"> <li data-start="555" data-end="586"> <p data-start="557" data-end="586">Tracking <strong data-start="566" data-end="586">sensor responses</strong></p> </li> <li data-start="589" data-end="614"> <p data-start="591" data-end="614">Logging <strong data-start="599" data-end="614">signal data</strong></p> </li> <li data-start="617" data-end="684"> <p data-start="619" data-end="684">Observing <strong data-start="629" data-end="657">control system stability</strong> or slow-changing variables</p> </li> </ul> </li> </ul> <h5 data-start="686" data-end="735"><strong data-start="694" data-end="735">2. Analog Simulator Rack (background)</strong></h5> <ul data-start="736" data-end="1072"> <li data-start="736" data-end="835"> <p data-start="738" data-end="835">A&nbsp;<strong data-start="762" data-end="793">patch-panel simulator unit</strong>.</p> </li> <li data-start="836" data-end="1072"> <p data-start="838" data-end="988">The spaghetti of wires, modular knobs, and meters are part of a system designed to <strong data-start="921" data-end="960">model real-world physical phenomena</strong> using analog signals:</p> <ul data-start="991" data-end="1072"> <li data-start="991" data-end="1013"> <p data-start="993" data-end="1013">Servo motor behavior</p> </li> <li data-start="1016" data-end="1033"> <p data-start="1018" data-end="1033">Thermal systems</p> </li> <li data-start="1036" data-end="1072"> <p data-start="1038" data-end="1072">Dynamic responses to input voltage</p> </li> </ul> </li> </ul> <h5 data-start="1074" data-end="1119"><strong data-start="1082" data-end="1119">3. Panel Meters and Dial Controls</strong></h5> <ul data-start="1120" data-end="1307"> <li data-start="1120" data-end="1215"> <p data-start="1122" data-end="1215">Below the patching zone is the <strong data-start="1162" data-end="1214">signal output and parameter adjustment interface</strong>.</p> </li> <li data-start="1216" data-end="1307"> <p data-start="1218" data-end="1307">The man is using these dials to <strong data-start="1250" data-end="1270">fine-tune output</strong> or perhaps calibrate for a test run.</p> </li> </ul> <p><strong>What the person is doing:</strong></p> <p data-start="1351" data-end="1363">He&rsquo;s likely:</p> <ul data-start="1364" data-end="1586"> <li data-start="1364" data-end="1438"> <p data-start="1366" data-end="1438"><strong data-start="1366" data-end="1416">Adjusting the signal output or input variables</strong> in the simulator rack</p> </li> <li data-start="1439" data-end="1504"> <p data-start="1441" data-end="1504"><strong data-start="1441" data-end="1471">Monitoring system behavior</strong> as it gets recorded on the chart</p> </li> <li data-start="1505" data-end="1586"> <p data-start="1507" data-end="1586">Possibly running an <strong data-start="1527" data-end="1586">experiment on stability, error feedback, or oscillation</strong></p> </li> </ul> <p><strong>Educational context:</strong></p> <p data-start="1864" data-end="1886">This would be part of:</p> <ul data-start="1887" data-end="2052"> <li data-start="1887" data-end="1917"> <p data-start="1889" data-end="1917">A <strong data-start="1891" data-end="1917">control systems course</strong></p> </li> <li data-start="1918" data-end="1946"> <p data-start="1920" data-end="1946">An <strong data-start="1923" data-end="1946">analog modeling lab</strong></p> </li> </ul> <div>&nbsp;</div> <div> <p><strong>Credits:</strong>&nbsp;</p> <p>Some technical descriptions and historical interpretations were developed with the assistance of ChatGPT, an AI language model by OpenAI.</p> </div> <div>&nbsp;</div>
• Geographic Coverage: San Francisco, CA
• Type: Still Image
• Format: Negative
• Source: San Francisco State University Archives
• Rights: Public