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+<html devsite>
+  <head>
+    <title>ITS-in-a-Box Assembly</title>
+    <meta name="project_path" value="/_project.yaml" />
+    <meta name="book_path" value="/_book.yaml" />
+  </head>
+  <body>
+  <!--
+      Copyright 2017 The Android Open Source Project
+
+      Licensed under the Apache License, Version 2.0 (the "License");
+      you may not use this file except in compliance with the License.
+      You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+      Unless required by applicable law or agreed to in writing, software
+      distributed under the License is distributed on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+      See the License for the specific language governing permissions and
+      limitations under the License.
+  -->
+
+<p>ITS-in-a-box consists of a plastic box that is laser cut from computer-aided
+design (CAD) drawings, a chart tablet, and a device under test (DUT). This page
+provides step-by-step instructions for assembling the ITS-in-a-box.</p>
+
+<p><img src=images/camera_iab_cad.png></p>
+<p class=caption><strong>Figure 1</strong>. CAD image for ITS-in-a-box.</p>
+
+<h2>Required tools</h2>
+<p>Before getting started, ensure you have
+<a href="camera_its_iab_tech_drawings.zip">downloaded the technical
+drawings</a> for the ITS-in-a box and have the following tools available:</p>
+<ul>
+<li>Phillips head screwdriver</li>
+<li>Pliers</li>
+<li>Exacto knife</li>
+<li>Wire cutters or scissors (optional)</li>
+</ul>
+
+<h2 id=lighting>Step 1: Lighting</h2>
+<p>To assemble the ITS-in-a-box lighting component:</p>
+
+<ol>
+<li>Gather the lighting hardware shown in Figure 2:
+<br><img src=images/camera_iab_light_assembly_parts.png width="50%"><br>
+<strong>Figure 2</strong>. Light assembly parts.<br><br>
+Hardware includes LED light bars, plastic light baffles, plastic light mounts,
+metal light clips included in the LED lighting kit, and four 6-32 screws with
+acorn head nuts.</li>
+<li>Place LED light bars in the mounts with lights pointing down and towards
+the table, as shown in Figure 3 (left side):
+<br><img src=images/camera_iab_light_bar.png width="50%"><br>
+<strong>Figure 3</strong>. Close-up of light bars with lights facing down
+and screws threaded through clips.<br><br>
+Thread the screws through the light clips using a screwdriver and while holding
+the metal clip. The screw head should be be on the inside of the C shape of the
+light clip as shown in Figure 3 (right side). Threading the screws requires
+pressure as the fit is tight.</li>
+<li>Bolt the clips to the plastic baffles as shown in Figure 4:
+<br><img src=images/camera_iab_light_baffles.png width="50%"><br>
+<strong>Figure 4</strong>. Light baffles with clips attached (acorn nuts are on
+the side of the plastic not shown).</li>
+<li>Assemble the lights by snapping the baffles to the LED light backs with the
+clips.
+<br><img src=images/camera_iab_light_assembled.png width="50%"><br>
+<strong>Figure 5</strong>. Assembled lights.<br><br>
+The LED lights should point down and the plastic should form a back to the light
+to block the shiny, reflective back of the LED light bar.</li>
+</ol>
+
+<h2 id=phone-mount>Step 2: Phone mounts</h2>
+<p>To assemble phone mounts:</p>
+
+<ol>
+<li>Gather the phone mount hardware shown in Figure 6:
+<br><img src=images/camera_iab_phone_mount_parts.png width="50%"><br>
+<strong>Figure 6</strong>. Phone mount assembly parts.<br><br>
+Hardware includes two aluminum phone trays, two plungers, two rubber tips, and
+four 8-32 pan-head screws.</li>
+<li>Cut the rubber tips short enough to not interfere with plunger operation
+(roughly in half), then use the rubber tips to cover the plungers.</li>
+<li>Assemble the phone mounts using pan-head screws to attach the plunger
+mechanisms to the aluminum trays.
+<br><img src=images/camera_iab_phone_mount_assembled.png width="50%"><br>
+<strong>Figure 7</strong>. Assembled phone mounts.<br><br>
+Ensure the screws do not protrude beyond the plunger in the retracted or
+extended plunger position.</li>
+</ol>
+
+<h2 id=phone-mount>Step 3: Aperture plate</h2>
+<p>To assemble the front aperture plate:</p>
+<ol>
+<li>Gather the front aperture plate hardware shown in Figure 8:
+<br><img src=images/camera_iab_front_plate_parts.png width="50%"><br>
+<strong>Figure 8</strong>. Front aperture plate assembly parts (front plate
+top has the narrower space from slots for tabs to edge).<br><br>
+Hardware includes four short nylon screws (provided in the ITS-in-a-box kit) and
+eight washers (required to keep the screws from protruding through the back of
+the plastic plate).</li>
+<li>Add phone mounts to the front square aperture plate as shown in Figure 9:
+<br><img src=images/camera_iab_front_plate_assembled.jpg width="50%"><br>
+<strong>Figure 9</strong>. Assembled front plate, phone mounts in middle
+position.</li>
+</ol>
+
+
+<h2 id=tablet-holder>Step 4: Tablet holder</h2>
+<p>To assemble the tablet holder:</p>
+
+<ol>
+<li>Gather the tablet holder parts shown in Figure 10:
+<br><img src=images/camera_iab_tab_holder_parts.png width="50%"><br>
+<strong>Figure 10</strong>. Tablet holder space assembly parts.</li>
+
+<li>Attach the spacer bars to the back of the tablet holder by threading a
+nylon screw into the hole at the bottom-left or bottom-right of the tablet
+holder (the screw threads properly in only one direction).</li>
+
+<li>Mount the spacers on the opposite side of the nylon screw as shown in Figure
+11:
+<br><img src=images/camera_iab_tablet_spacer_detail.jpg  width="50%"><br>
+<strong>Figure 11</strong>. Tablet holder, location of plastic spacers and
+nylon screw.</li>
+
+<li>Assemble the tablet holder with the screw head in the counter-drilled
+plastic, then assemble the remaining pieces as shown in Figure 12.
+<br><img src=images/camera_iab_tab_holder_spacer.png  width="50%"><br>
+<strong>Figure 12</strong>. Assembled tablet holder spacer (washers account for
+thickness variations in the plastic).</li>
+
+<li>Gather the tablet plunger parts as shown in Figure 13:
+<br><img src=images/camera_iab_plunger_parts.png  width="50%"><br>
+<strong>Figure 13</strong>. Tablet plunger parts with plastic tips cut
+(later designs have only one plunger in the center).</li>
+
+<li>Cut the plastic tips to correct length and use the tips to cover the
+plunger heads.</li>
+
+<li>Attach plungers to the plastic, placing the acorn nuts on the outside to
+ensure minimum clearance on the inside for the tablet (and to prevent
+interference with plunger operation.</li>
+
+<li>Connect the plunger(s) with the screw heads facing the box as shown in
+Figure 14:
+<br><img src=images/camera_iab_tabholder_assembled.png width="50%"><br>
+<strong>Figure 14</strong>. Assembled tablet holder (acorn nuts face away
+from back panel of box).<br><br>
+All acorn nuts are on the same side of the tablet holder to maximize clearance
+for the tablet.</li>
+</ol>
+
+<h2 id=box-assembly>Step 5: Assemble box</h2>
+<p>To assemble the box:</p>
+<ol>
+<li>Place the front panel with the circular aperture flat on the table, inside
+facing up.</li>
+<li>Connect the front and back walls by inserting tabs into slots as shown in
+Figure 15:
+<br><img src=images/camera_iab_top_bottom_placed.png width="50%"><br>
+<strong>Figure 15</strong>. Top and bottom attached to front (as seen from
+right side).<br><br>
+Position the front so the chamfered side of the circular aperture is on the
+inside of the box. The front of the bottom can be identified by the small hole
+for the power cord box exit (out of the field of view). The plastic hooks for
+the sides should be pointed in the same direction.</li>
+<li>Attach the back to the top and bottom as shown in Figure 16:
+<br><img src=images/camera_iab_back_no_sides.jpg width="50%"><br>
+<strong>Figure 16</strong>. Back attached, no sides.<br><br>
+Push the back onto the tabs, then slide the back to the right (when facing the
+back of the box) to fit under the hooked tabs.</li></ol>
+
+
+<h2 id=light-install>Step 6: Install lights</h2>
+<p>To install the lights:</p>
+<ol>
+<li>Place lights in the assembled box as shown in Figure 17:
+<br><img src=images/camera_iab_light_installed.jpg width="50%"><br>
+<strong>Figure 17</strong>. Proper light placement (back removed).<br><br>
+Ensure lights are pointed in the right direction (towards the top and bottom and
+towards the front of the box).</li>
+<li>Secure lights by squeezing the pin into the small hole on the rectangular
+tab that extends through the slot in the top/bottom, as shown in Figure 18:
+<br><img src=images/camera_iab_pin_led_mount_details.png width="50%"><br>
+<strong>Figure 18</strong>. Detail of inserted pin in LED mount tab on outside
+of box.<br><br>
+Squeezing of the pins is best done with a pair of pliers using gentle pressure;
+you should feel a little give in the plastic as the pins are squeezed in place.
+Insert the pins for both the bottom and top light sets. As the pins are small
+and easy to drop, it is easiest to insert them to the bottom with the box
+upside down.</li>
+<li>Attach the power cord to the lower light bar as shown in Figure 19:
+<br><img src=images/camera_iab_light_cord.jpg width="50%"><br>
+<strong>Figure 19</strong>. Detail of lighting power cord.<br><br>
+Thread the power cord through the hole in lower-front-right. The power cord has
+different connectors at each end: The narrow connector fits to the LED light bar
+and the larger connector fits to the power adaptor.</li>
+<li>To prevent the power cord from pulling on the light assembly, use a zip tie
+to secure the power cord to bottom of box as shown in Figure 20:
+<br><img src=images/camera_iab_light_cord_secured.jpg width="50%"><br>
+<strong>Figure 20</strong>. Power cord zip tie attachment on bottom of box
+(shown on its side); trim ties as necessary.</li>
+<li>Wire the top lights to the bottom lights on the left side and secure the
+cable to the front of the box. Some drawings show the cable secured on side of
+box, but it is easier to wire them to front corner as shown in Figure 21:
+<br><img src=images/camera_iab_light_cord_zip.jpg width="50%"><br>
+<strong>Figure 21</strong>. Detail of light cord anchored out of field of
+view.</li>
+</ol>
+
+<h2 id=sides-holder>Step 7: Attach sides, tablet holder, and handles</h2>
+<p>To attach the box sides, tablet holder, and handles with locking mechanism:</p>
+<ol>
+<li>Snap the right panel into place by pushing and sliding it upwards. The
+bottom of the panel should be flush with the bottom of the front and back panels
+as shown in Figure 22:
+<br><img src=images/camera_iab_right_side_placed.jpg width="50%"><br>
+<strong>Figure 22</strong>. Right side panel in place (viewed from back).</li>
+<li>Place assembled tablet holder in right tabs as shown in Figure 23:
+<br><img src=images/camera_iab_tabholder_inserted.jpg width="50%"><br>
+<strong>Figure 23</strong>. Right side, tablet holder inserted in slots (viewed
+from back of box so it appears on the left).<br><br>
+If the tabs are too tight to allow the tablet holder to move up and down, sand
+the tabs with 100 grit sandpaper to thin them and create a better fit.</li>
+<li>Snap the left panel into place by pushing and sliding it upwards, as shown
+in figure 24:
+<br><img src=images/camera_iab_left_side_placed.jpg width="50%"><br>
+<strong>Figure 24</strong>. Left side panel in place.</li>
+<li>Gather the handle parts shown in Figure 25:
+<br><img src=images/camera_iab_handle_parts.png width="50%"><br>
+<strong>Figure 25</strong>. Handle and box lock parts.<br><br>
+Hardware includes four wide plastic pieces (for outside the box) and two narrow
+pieces (for top of the box). Screw holes are not placed symmetrically on the
+plastic strips.</li>
+<li>Assemble the handle as shown in figure 26:
+<br><img src=images/camera_iab_handle_assembled.png width="50%"><br>
+<strong>Figure 26</strong>. Assembled handle.<br><br>
+Acorn nuts are usually placed on the top of the box. While this is not strictly
+necessary, it makes the outer part of the handle as flat as possible. If the
+handle is loose, insert washers to allow the acorn nuts to tighten effectively.
+</li>
+</ol>
+
+<h2 id=final-assembly>Step 8: Final assembly</h2>
+<p>To perform final assembly of the ITS-in-a-box:</p>
+<ol>
+<li>Using two nylon screws (short or long), attach the square aperture panel
+with phone mounts to the front of the box as shown in Figure 27:
+<br><img src=images/camera_iab_front_attached.jpg width="50%"><br>
+<strong>Figure 27</strong>. Attached front panel.<br><br>
+Place one screw on the top of the box and one screw on the bottom of the box.</li>
+<li>Test the 4"x4” gatorboard aperture blank to ensure it fits in the square
+opening, as shown in Figure 28:
+<br><img src=images/camera_iab_gater_no_aperture.jpg width="50%"><br>
+<strong>Figure 28</strong>. Gatorboard installed, no aperture cut.<br><br>
+The fit should be snug. If the blank is too tight, shave it; if too loose, make
+another.</li>
+<li>Cut apertures for cameras. You can cut a single aperture (for testing a
+single phone) or two apertures (for testing two phones). Apertures for the Pixel
+and Pixel XL front and rear cameras are shown in Figure 29:
+<br><img src=images/camera_iab_front_apertures.jpg width="50%"><br>
+<strong>Figure 29</strong>. Front of ITS-in-a-box with front and rear camera
+aperture cuts.<br><br>
+The front camera is a circular aperture since there is no flash or laser, while
+the rear camera is a rectangular aperture that allows the flash and laser to
+operate without being blocked.</li></ol>
+
+  </body>
+</html>