ASTM F1663-95(2002) (R1995)

1.1 This test method covers the determination of capacitance(s) of a membrane switch.

Capacitance testing is useful for design verification, quality control of materials, and workmanship.

High capacitance may interfere with the reliable performance of interface electronics.

Specific areas of testing are, but not limited to:

3.3.1 Conductor/dielectric/conductor crossing point,

3.3.2 Close proximity of conductors, and

3.3.3 Any other conductive surface such as shielding or metal backing panel.