diff options
| -rw-r--r-- | mechanical-specifications.typ | 365 | ||||
| -rw-r--r-- | pictures/ventilation.svg | 1255 |
2 files changed, 361 insertions, 1259 deletions
diff --git a/mechanical-specifications.typ b/mechanical-specifications.typ index eb00fca..966ab3f 100644 --- a/mechanical-specifications.typ +++ b/mechanical-specifications.typ @@ -1255,9 +1255,366 @@ Top and bottom faces include ventilation slots for convective cooling while maintaining EMI shielding. #figure( - image("pictures/ventilation.svg"), - caption: [Cassette ventilation], -) <figure-cassette-ventilation> + cetz.canvas({ + import cetz.draw: * + + // Scale factor: 1 mm = 0.045 drawing units + let s = 0.045 + + let face-d = 152.4 * s // Depth = 152.4 mm + let face-w = 35.7 * s // Width = 35.7 mm + + // Slot parameters + let slot-w = 2.5 * s // Slot width = 2.5 mm + let slot-l = 10.0 * s // Slot length = 10.0 mm + let slot-r = slot-w / 2 // Full corner radius = 1.25 mm + let row-pitch = 5.0 * s // 5 rows across width + let col-pitch = 12.0 * s // 12 columns across depth + + // Calculate array offsets to center slots on face + let row-start = (face-w - (4 * row-pitch)) / 2 + let col-start = (face-d - (11 * col-pitch + slot-l)) / 2 + + // ========================================== + // 1. TOP / BOTTOM FACE VENTILATION PATTERN (152.4 mm x 35.7 mm) + // ========================================== + let x-top-start = -0.5 + let y-top-start = 5.2 + let x-top-end = x-top-start + face-d + let y-top-end = y-top-start + face-w + let x-top-mid = (x-top-start + x-top-end) / 2 + let y-top-mid = (y-top-start + y-top-end) / 2 + + // View Title + content((x-top-mid, y-top-end + 0.7), text( + size: 9pt, + weight: "bold", + )[TOP / BOTTOM FACE VENTILATION PATTERN]) + content((x-top-mid, y-top-end + 0.35), text( + size: 7pt, + fill: luma(90), + )[(60 Slots per face: $5$ rows $times 12$ columns)]) + + // Main Plate Outline + rect( + (x-top-start, y-top-start), + (x-top-end, y-top-end), + fill: luma(250), + stroke: 1.2pt + black, + ) + + // 5 Rows x 12 Columns Slot Array with Full Corner Radius + for r in range(0, 5) { + let sy = y-top-start + row-start + r * row-pitch + for c in range(0, 12) { + let sx = x-top-start + col-start + c * col-pitch + rect( + (sx, sy - slot-w / 2), + (sx + slot-l, sy + slot-w / 2), + radius: slot-r, + fill: white, + stroke: 0.5pt + black, + ) + } + } + + // Depth Dimension (152.4 mm) + line( + (x-top-start, y-top-start), + (x-top-start, y-top-start - 0.5), + stroke: 0.4pt + luma(140), + ) + line( + (x-top-end, y-top-start), + (x-top-end, y-top-start - 0.5), + stroke: 0.4pt + luma(140), + ) + line( + (x-top-start, y-top-start - 0.45), + (x-top-end, y-top-start - 0.45), + mark: (start: "stealth", end: "stealth"), + mark-size: 0.10, + stroke: 0.6pt + black, + ) + content((x-top-mid, y-top-start - 0.75), text( + size: 7.5pt, + )[$qty(152.4, "mm")$]) + + // Width Dimension (35.7 mm) + line( + (x-top-end, y-top-start), + (x-top-end + 0.5, y-top-start), + stroke: 0.4pt + luma(140), + ) + line( + (x-top-end, y-top-end), + (x-top-end + 0.5, y-top-end), + stroke: 0.4pt + luma(140), + ) + line( + (x-top-end + 0.45, y-top-start), + (x-top-end + 0.45, y-top-end), + mark: (start: "stealth", end: "stealth"), + mark-size: 0.10, + stroke: 0.6pt + black, + ) + content( + (x-top-end + 0.75, y-top-mid), + text(size: 7.5pt)[$qty(35.7, "mm")$], + angle: -90deg, + ) + + // Column Pitch Indicator (12.0 mm) + let c0-x = x-top-start + col-start + slot-l / 2 + let c1-x = c0-x + col-pitch + line((c0-x, y-top-start), (c0-x, y-top-start - 1.2), stroke: ( + paint: luma(140), + thickness: 0.4pt, + dash: "dashed", + )) + line((c1-x, y-top-start), (c1-x, y-top-start - 1.2), stroke: ( + paint: luma(140), + thickness: 0.4pt, + dash: "dashed", + )) + line( + (c0-x, y-top-start - 1.15), + (c1-x, y-top-start - 1.15), + mark: (start: "stealth", end: "stealth"), + mark-size: 0.08, + stroke: 0.5pt + black, + ) + content(((c0-x + c1-x) / 2, y-top-start - 1.35), text( + size: 6.5pt, + )[Column pitch: $qty(12.0, "mm")$ ($12$ cols)]) + + // Row Pitch Indicator (5.0 mm) + let r0-y = y-top-start + row-start + let r1-y = r0-y + row-pitch + line((x-top-start, r0-y), (x-top-start - 0.8, r0-y), stroke: ( + paint: luma(140), + thickness: 0.4pt, + dash: "dashed", + )) + line((x-top-start, r1-y), (x-top-start - 0.8, r1-y), stroke: ( + paint: luma(140), + thickness: 0.4pt, + dash: "dashed", + )) + line( + (x-top-start - 0.75, r0-y), + (x-top-start - 0.75, r1-y), + mark: (start: "stealth", end: "stealth"), + mark-size: 0.08, + stroke: 0.5pt + black, + ) + content( + (x-top-start - 0.85, (r0-y + r1-y) / 2), + text(size: 6.5pt)[Row pitch: $qty(5.0, "mm")$ ($5$ rows)], + anchor: "east", + ) + + // ========================================== + // 2. SINGLE SLOT GEOMETRY DETAIL (Enlarged View) + // ========================================== + let x-detail-center = -1.0 + let y-detail-center = 1.8 + let detail-l = 2.8 // Magnified length (10.0 mm) + let detail-w = 0.7 // Magnified width (2.5 mm) + let detail-r = detail-w / 2 // Full radius (1.25 mm) + + let sx1 = x-detail-center - detail-l / 2 + let sx2 = x-detail-center + detail-l / 2 + let sy1 = y-detail-center - detail-w / 2 + let sy2 = y-detail-center + detail-w / 2 + + // View Title + content((x-detail-center, y-detail-center + 1.2), text( + size: 8.5pt, + weight: "bold", + )[SINGLE SLOT GEOMETRY DETAIL]) + content((x-detail-center, y-detail-center + 0.85), text( + size: 7pt, + fill: luma(90), + )[(Enlarged view: $qty(2.5, "mm") times qty(10.0, "mm")$ slot)]) + + // Centerlines + line( + (sx1 - 0.4, y-detail-center), + (sx2 + 0.4, y-detail-center), + stroke: (paint: luma(120), thickness: 0.4pt, dash: "dash-dotted"), + ) + line( + (x-detail-center, sy1 - 0.4), + (x-detail-center, sy2 + 0.4), + stroke: (paint: luma(120), thickness: 0.4pt, dash: "dash-dotted"), + ) + + // Magnified Rounded Stadium Slot Contour + rect( + (sx1, sy1), + (sx2, sy2), + radius: detail-r, + fill: white, + stroke: 1.2pt + black, + ) + + // Slot Length Dimension (10.0 mm) + line((sx1, sy1), (sx1, sy1 - 0.5), stroke: 0.4pt + luma(140)) + line((sx2, sy1), (sx2, sy1 - 0.5), stroke: 0.4pt + luma(140)) + line( + (sx1, sy1 - 0.45), + (sx2, sy1 - 0.45), + mark: (start: "stealth", end: "stealth"), + mark-size: 0.08, + stroke: 0.6pt + black, + ) + content((x-detail-center, sy1 - 0.7), text( + size: 7pt, + )[$qty(10.0, "mm")$ (parallel to depth)]) + + // Slot Width Dimension (2.5 mm) + line((sx2, sy1), (sx2 + 0.5, sy1), stroke: 0.4pt + luma(140)) + line((sx2, sy2), (sx2 + 0.5, sy2), stroke: 0.4pt + luma(140)) + line( + (sx2 + 0.45, sy1), + (sx2 + 0.45, sy2), + mark: (start: "stealth", end: "stealth"), + mark-size: 0.08, + stroke: 0.6pt + black, + ) + content( + (sx2 + 0.55, y-detail-center), + text(size: 7pt)[$qty(2.5, "mm")$], + anchor: "west", + ) + + // Full Corner Radius Callout (R = 1.25 mm) + let arc-px = sx1 + detail-r * 0.29 + let arc-py = y-detail-center + detail-r * 0.71 + line( + (arc-px - 0.8, arc-py + 0.3), + (arc-px, arc-py), + mark: (end: "stealth"), + mark-size: 0.08, + stroke: 0.6pt + black, + ) + content( + (arc-px - 0.85, arc-py + 0.35), + text(size: 6.5pt)[$R = qty(1.25, "mm")$], + anchor: "east", + ) + + // ========================================== + // 3. CONVECTIVE COOLING & EMI SHIELDING CONCEPT + // ========================================== + let x-phys-center = 6.5 + let y-phys-center = 1.8 + let phys-w = 3.6 + let phys-t = 0.12 + + // View Title + content((x-phys-center, y-phys-center + 1.2), text( + size: 8.5pt, + weight: "bold", + )[CONVECTIVE COOLING & EMI SHIELDING]) + content((x-phys-center, y-phys-center + 0.85), text( + size: 7pt, + fill: luma(90), + )[(Cross-sectional thermal & RF attenuation concept)]) + + // Top Face Metal Plate with 4 Slot Openings + let top-y = y-phys-center + 0 + rect( + (x-phys-center - phys-w / 2, top-y), + (x-phys-center + phys-w / 2, top-y + phys-t), + fill: luma(220), + stroke: 0.8pt + black, + ) + + // Bottom Face Metal Plate with 4 Slot Openings + let bot-y = y-phys-center - 1.2 + rect( + (x-phys-center - phys-w / 2, bot-y - phys-t), + (x-phys-center + phys-w / 2, bot-y), + fill: luma(220), + stroke: 0.8pt + black, + ) + + // Slot Apertures Cut into Plates + let ap-offsets = (-1.2, -0.4, 0.4, 1.2) + for dx in ap-offsets { + rect( + (x-phys-center + dx - 0.15, top-y - 0.02), + (x-phys-center + dx + 0.15, top-y + phys-t + 0.02), + fill: white, + stroke: none, + ) + rect( + (x-phys-center + dx - 0.15, bot-y - phys-t - 0.02), + (x-phys-center + dx + 0.15, bot-y + 0.02), + fill: white, + stroke: none, + ) + + // Convective Natural Airflow Lines (Dashed Vertical Lines) + line( + (x-phys-center + dx, bot-y - 0.4), + (x-phys-center + dx, top-y + 0.4), + stroke: (paint: black, thickness: 0.8pt, dash: "dashed"), + mark: (end: "stealth"), + mark-size: 0.08, + ) + } + + // Plate Labels + content( + (x-phys-center + phys-w / 2 + 0.15, top-y + phys-t / 2), + text(size: 6.5pt, weight: "bold")[Top face], + anchor: "west", + ) + content( + (x-phys-center + phys-w / 2 + 0.15, bot-y - phys-t / 2), + text(size: 6.5pt, weight: "bold")[Bottom face], + anchor: "west", + ) + + // Convective Airflow Center Annotation + content((x-phys-center, y-phys-center - 0.6), text( + size: 7pt, + weight: "bold", + )[Natural convection airflow]) + + // Incident RF Wave Attenuation Annotation (Wave Bouncing off Metal Face) + let wave-x0 = x-phys-center - 1.5 + line( + (wave-x0, top-y - 0.2), + (wave-x0 + 0.15, top-y - 0.4), + (wave-x0 + 0.3, top-y - 0.2), + (wave-x0 + 0.45, top-y - 0.4), + (wave-x0 + 0.6, top-y - 0.25), + stroke: 0.8pt + black, + ) + line( + (wave-x0 + 0.6, top-y - 0.25), + (wave-x0 + 0.3, top-y - 0.05), + stroke: 0.8pt + black, + mark: (end: "stealth"), + mark-size: 0.07, + ) + content( + (wave-x0 - 0.1, top-y - 0.1), + text(size: 6pt, weight: "bold")[Incident RF wave], + anchor: "east", + ) + content( + (wave-x0 - 0.1, top-y - 0.35), + text(size: 5.5pt, fill: luma(100))[(Attenuated $> qty(20, "dB")$)], + anchor: "east", + ) + }), + caption: [Cassette ventilation system details detailing full $5 times 12$ slot top elevation array, magnified single slot geometry with $R = qty(1.25, "mm")$ corner radius, and cross-sectional natural convective cooling / RF electromagnetic shielding concept.], +) <figure-cassette-ventilation-diagram> #figure( table( @@ -2055,7 +2412,7 @@ A fully loaded chassis must form a continuous shielded enclosure: [Shielding effectiveness], [$gt qty(20, "dB"), qtyrange(80, 1000, "MHz")$], [Panel joints], [Metal-to-metal contact of conductive gasket], - [Ventilation openings], [\ Maximum slot dimensions: $qty(10, "mm") times qty(2, "mm")$], + [Ventilation openings], [Maximum slot dimensions: $qty(10, "mm") times qty(2, "mm")$], [Cable entry], [Shield connectors or filtered feedthroughs], ), diff --git a/pictures/ventilation.svg b/pictures/ventilation.svg deleted file mode 100644 index 6d17462..0000000 --- a/pictures/ventilation.svg +++ /dev/null @@ -1,1255 +0,0 @@ -<?xml version="1.0" encoding="UTF-8" standalone="no"?> -<svg - viewBox="0 0 905.71826 435.90234" - width="905.71826" - height="435.90234" - style="font-family:serif" - version="1.1" - id="svg111" - sodipodi:docname="ventilation.svg" - inkscape:version="1.4.4 (dcaf3e7d9e, 2026-05-05)" - xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" - xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" - xmlns="http://www.w3.org/2000/svg" - xmlns:svg="http://www.w3.org/2000/svg" - xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" - xmlns:cc="http://creativecommons.org/ns#"> - 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<!-- TITLE & HEADER --> - <!-- ================================================================= --> - <!-- ================================================================= --> - <!-- VIEW 1: FULL FACE PLAN VIEW (TOP/BOTTOM FACE: 152.4 mm x 35.7 mm) --> - <!-- ================================================================= --> - <text - x="468.3212" - y="9.9023438" - text-anchor="middle" - fill="#000000" - font-size="13px" - font-weight="700" - id="text5">TOP / BOTTOM FACE VENTILATION PATTERN</text> - <text - x="468.3212" - y="25.902344" - text-anchor="middle" - fill="#666666" - font-size="10px" - id="text6" - style="fill:#000000;fill-opacity:1">(Scale: 3.5 px/mm | 60 Slots per Face: 5 Rows × 12 Columns)</text> - <rect - x="201.62119" - y="75.902344" - width="533.40002" - height="124.95" - fill="#f8fafc" - stroke="#000000" - stroke-width="2" - id="rect6" - style="fill:#ffffff;fill-opacity:1" /> - <rect - x="219.82117" - y="99.00235" - width="35" - height="8.75" - rx="4.375" - fill="#ffffff" - 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