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#import "../lib/unify.typ": qty
#import "@preview/cetz:0.5.2"
#figure(
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>
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