Test Criteria

Design Test¶

• Do screws back out?
• If special tools are needed, do we have enough of them? Torx, Allen, etc?
• During assembly
• Does it feel solid?
• If there are points of weakness, where are they?
• Anything obviously wrong should be noted
• Do the buttons actuate? Anything interfering with them?
• Static Electricity testing
• Electrical shorts through housing?
• Do cables fit securely?
• Do they break contact?
• Does the housing interfere with cable connections?
• Squeeze the device and look for any changes in behavior or fit/finish
• Shake the device, listen for loose PCB or other parts
• If the device has mounting affordances, mount it
• How much force is required to remove it?
• How much force is needed to mount it?
• Can it be twisted off of the mounting surface/area?
• How do finishes hold up with abrasion?
• Is the device easily cleanable?
• Fingerprints?
• Do housing components assemble/align well?
• Has intended design symmetry been preserved?
• Are corners broken? Any obvious burrs?
• Are fillets present?
• Holes in housing for connectors
• What is the appropriate torque application for screws? Are electric screwdrivers not advised?

CAD Sanity Check¶

Prototyping¶

• Have we made sure that all parts are final production units and not holdovers from prototyping?

Vendor Acceptance/QA¶

Tolerances and Standards¶

• Measure Against Drawings, check against Codeshelf standard tolerances (on drawings)

  • Thickness
  • Height
  • Length
  • Width

• Finish Examination

  • Any surface finish callouts on drawings should be checked against finished parts
  • Note any obvious mechanical flaws on mating surfaces
  • Note cracks, flaws or imperfections
  • Corners rounded/broken? Check for sharp edges
  • Look for mars, scratches

• Mechanical Fit and Alignment

  • Test-fit mating parts and examine for alignment issues
• Assembly Tests
  • Assemble fully
  • Tighten screws
  • Check for gaps in mating parts
  • Housing ports/holes for connectors
  • How close is the fit around the cable?
  • Does the cable break contact?
• Functional Tests
  • Buttons
    • Do buttons function as intended, mechanically?
    • Are they aligned in their openings?
• Screens
  • Is the screen aligned with the edges of the housing?
  • Are all pixels visible?
• Antennae
• Screws/fasteners
  • Do screws back out?
  • What happens when you overtighten them?
• Endurance Tests
  • Drop Test
  • Drop device from the height it is normally used from/mounted at
• Shake Test
  • Vigorously shake the device and listen for rattles and other sounds, note them
• Cable pull/Twist
  • Insert cables and pull them out.
  • Note how much force is needed
  • Note any breakage or loose parts
• Squeeze Test
  • Squeeze the assembled device with your hands and look for gaps in the housing, note any sounds or breakage

Measurements Data Verified/Collected:¶

Finish Notes¶

Assembly Notes¶

Mechanical Tests Performed¶