MILDTL28803C
4.4.2 Inspection routine. Sample units of displays shall be subjected to the qualification inspection specified in
table II in the order shown. All sample units shall be subjected to the inspection of group I. The sample units shall
then be divided as specified in table II and subjected to the inspection for their particular group.
TABLE II. Qualification and group B inspection.
Examination or test
Requirement
Method
Group I (all sample units)
Visual and mechanical examination 1/
Operating characteristics
Character distortion
Group II (4 sample units)
Thermal shock
Vibration
Shock
Moisture resistance
Dielectric withstanding voltage
Operating characteristics
Character distortion
Seal (when applicable)
Group III (2 sample units)
Terminal strength
Solderability (when applicable)
Resistance to soldering heat (when specified)
Salt spray (corrosion)
Group IV (12 sample units) (2 for each color)
Chromaticity
Overload
Life (electrical)
Luminance
Dot-to-dot ratio
Contrast ratio
Field of view
Character distortion
Group V (2 sample units)
Mechanical endurance (when applicable)
1/
Two sample units only for dimensions.
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