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| <title>Regular Field of View (RFoV) ITS-in-a-Box Assembly</title> |
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| |
| <p>The regular field of view (RFoV) ITS-in-a-box (revision 1) consists of a |
| plastic box that is laser cut from computer-aided design (CAD) drawings, a chart |
| tablet, and a device under test (DUT). The RFoV ITS-in-a-box is designed to test |
| devices with an FoV less than 90 degrees (RFoV). You can purchase an |
| ITS-in-a-box or build your own.</p> |
| |
| <aside class="note"><strong>Note:</strong> The wide field of view (WFoV) |
| ITS-in-a-box (revision 2) can be used to test both WFoV (FoV > 90 degrees) and |
| RFoV devices. For details, see |
| <a href="/compatibility/cts/camera-wfov-box-assembly"> WFoV ITS-in-a-Box</a>.</aside> |
| |
| <h2 id=purchasing-box>Purchasing an RFoV ITS-in-a-box</h2> |
| <p>We recommend purchasing an RFoV ITS-in-a-box from one of the following |
| qualified vendors.</p> |
| |
| <ul> |
| <li><em>Acu Spec, Inc.</em><br>990 Richard Ave, Ste 103, Santa Clara, CA |
| 95050<br>[email protected]</li> |
| <li><em>MYWAY, Inc</em><br>4F., No. 163, Fu |
| Ying Rd., New Taipei City, Taiwan<br>[email protected]</li> |
| </ul> |
| |
| <h2 id=building-box>Building an RFoV ITS-in-a-box</h2> |
| |
| <p>This section |
| provides step-by-step instructions for assembling an RFoV 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> |
| |
| <h3>Required tools</h3> |
| <p>Before getting started, ensure you have |
| <a href="rfov_its_box_assembly_1_3.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> |
| |
| <h3 id=lighting>Step 1: Lighting</h3> |
| <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> |
| |
| <h3 id=phone-mount>Step 2: Phone mounts</h3> |
| <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> |
| |
| <h3 id=phone-mount>Step 3: Aperture plate</h3> |
| <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> |
| |
| |
| <h3 id=tablet-holder>Step 4: Tablet holder</h3> |
| <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> |
| |
| <h3 id=box-assembly>Step 5: Assemble box</h3> |
| <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> |
| |
| |
| <h3 id=light-install>Step 6: Install lights</h3> |
| <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> |
| |
| <h3 id=sides-holder>Step 7: Attach sides, tablet holder, and handles</h3> |
| <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> |
| |
| <h3 id=final-assembly>Step 8: Final assembly</h3> |
| <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> |
| |
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