Toughbook® mobile computers are tested for two types of pressure: atmospheric and physical.
Fully-rugged, vehicle-mounted-rugged products must endure the effects of atmospheric pressure. The altitude test is performed in accordance with MIL-STD-810G, Method 500.5, Procedure I (Storage) and II (Operation). The altitude level used for both procedures is 15,000 feet (highest equivalent altitude given within MIL-STD-810G for cargo pressures of military aircraft).
In addition, Panasonic technicians test the ability of the full line of Toughbook mobile computers to withstand tremendous forces of physical pressure exerted on their casing. The all-magnesium casing is 20 times stronger than ABS plastic making it an ideal material for protecting the LCD screen, a critical and expensive component. Furthermore, the cases are specially designed to absorb tremendous amounts of physical pressure. Business-rugged Toughbook laptops are compression-tested to withstand 220 lbs. of pressure; fully-rugged and Toughbook U1 models are tested to withstand 300 lbs. of pressure.
Panasonic's internal pressure resistance testing of the casing goes significantly beyond MIL-STD requirements, which specify that pressures are to be applied only in one place. Panasonic uses robotics to systematically apply the specified pressures to many areas on the casing. This involves applying pressure to areas that are more prone to cracks and breakage, ensuring that the entire casing is free of weak spots.
Beyond MIL-STD: Panasonic applies the MIL-STD specified pressures to many areas on the Toughbook computers' casing instead of one as required by MIL-STD. This ensures the entire casing is capable of withstanding tremendous pressure and impact.