The document discusses top tests that should be conducted for tablet PCs during product inspection, including touch screen testing using a testing machine to check responsiveness and longevity over 30,000 cycles, battery capacity and charge/discharge testing by charging and discharging the battery 20 cycles, screen adhesion testing using 3M tape, vibration testing using a vibration table per ISTA standards, and environmental testing by exposing tablets to high temperature and humidity in an environmental chamber. Conducting these tests can help manufacturers ensure they are producing a quality product.

1. By John Niggl

2. Just how large is the tablet PC market?

3. 216 million tablet PCs were sold in 2014.
Source:Gartner (January 2015)
Gartner predicts that tablet sales will
surpass traditional PC sales in 2015.

4. …and did I mention the tablet PC market is
competitive?

5. Source: IDC Worldwide Tablet Tracker

6. With so many major players in the tablet PC
market…

7. How can you compete?

8. By making sure that you’re manufacturing a
quality product!

9. …how do you do that?
Conduct these Top 5 Tests for Tablet PCs
during your next product inspection!

11. Touch screens are a vital component
of tablet PCs.

12. Any quality factory that manufactures
tablet PCs should be equipped with a
testing machine.

13. Use a testing machine to verify
responsiveness and longevity of the touch
screen function.

14. Use a testing machine to verify
responsiveness and longevity of the touch
screen function.

15. A tablet PC should be tested for at least 30,000
cycles to simulate lifetime usage.

17. Battery capacity and
charge/discharge should be tested.

18. Test battery lifespan by:
2. Playing video at maximum volume until the
battery expires.
1. Fully charging the tablet PC

19. As with a screen testing machine, a well-
equipped factory should be able to
provide a battery charger.

20. To test battery charge/discharge:

21. To test battery charge/discharge:
1. Remove the battery protection board

22. To test battery charge/discharge:
2. Charge and discharge the battery 20 cycles
1. Remove the battery protection board

23. To test battery charge/discharge:
2. Charge and discharge the battery 20 cycles
1. Remove the battery protection board
3. Compare the actual capacity found to the rated capacity

24. If battery capacity tested is less than the rated
capacity, the tablet fails this test.

26. Screen separation is a common problem seen with
lower-quality tablet PCs.
Tablets should be tested for screen adhesion to ensure
that screens won’t easily separate from the tablet
during normal use.

27. To test screen adhesion:

28. To test screen adhesion:
1. Apply 3M tape to the tablet screen

29. To test screen adhesion:
2. Tear the 3M tape off the screen
1. Apply 3M tape to the tablet screen

30. To test screen adhesion:
2. Tear the 3M tape off the screen
1. Apply 3M tape to the tablet screen
3. Check that the screen is still firmly in place

32. An important part of product inspection for tablets,
vibration testing involves the use of a vibration table.
Vibration testing simulates forces products are
subjected to during transportation and shipping.

33. The International Safe Transit Association (ISTA) provides
procedures for vibration and related testing for consumer
products.

34. To conduct vibration testing for tablet PCs:

35. To conduct vibration testing for tablet PCs:
1. Use units that have already passed AQL defect
inspection

36. To conduct vibration testing for tablet PCs:
2. Place units in their retail packaging on the vibration
table running
at 200RPM for 2 hours
1. Use units that have already passed AQL defect
inspection

37. To conduct vibration testing for tablet PCs:
2. Place units in their retail packaging on the vibration
table running at 200RPM for 2 hours
1. Use units that have already passed AQL defect
inspection
3. Check the units for functionality and performance

38. If the units tested maintain full functionality and
performance, the tablets have passed vibration testing.

40. Environmental testing for products simulates how
extreme conditions can affect product functions.

41. In the case of tablet PCs, it’s important to
check functionality after prolonged exposure
to high temperature and humidity.

42. An environmental chamber, or climate
chamber, is an enclosure used to carry
out such testing.

43. A number of standards for environmental chambers
exist, including:

44. A number of standards for environmental chambers
exist, including:
• International Organization for Standardization (ISO)

45. A number of standards for environmental chambers
exist, including:
• International Organization for Standardization (ISO)
• American Society for Testing and Materials (ASTM)

46. A number of standards for environmental chambers
exist, including:
• International Organization for Standardization (ISO)
• American Society for Testing and Materials (ASTM)
• The Institute of Environmental Sciences and
Technology (IEST)

47. To carry out environmental testing for tablet PCs:

48. To carry out environmental testing for tablet PCs:
1. Keep the units in an environmental chamber with a
temperature
of 55 C +/- 2 C and a humidity of 85% for 8 hours

49. To carry out environmental testing for tablet PCs:
1. Keep the units in an environmental chamber with a
temperature
of 55 C +/- 2 C and a humidity of 85% for 8 hours
2. Check the tablets’ functions and performance

50. If the units tested maintain full functionality and
performance, the tablets have passed environmental
testing.

51. That’s it!

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