MIL-PRF-26542/1E
TABLE II. Parameter applicability.
*
Group
Group
Group
Inspection
Qualification
"A"
"B"
"C"
Group l
Visual and mechanical inspection
X
X
Sensitivity at ground level
X
X
Sensitivity at altitude
X
Frequency response at ground level
X
X
Frequency response at altitude
X
Impedance
X
X
Noise cancellation characteristic
N/A
Effect of external magnetic field
X
Stray magnetic field
X
Linearity
X
Talk-out
X
X
Dielectric withstanding voltage
X
Signal-to-noise
X
X
Distortion
X
X
Interchangeability
X
X
Group II
Thermal shock
X
X
Humidity
X
X
Drop
X
X
Pressure equalization
X
X
Explosive decompression
X
X
Salt fog
X
X
Group III
Vibration
X
X
Bounce
X
X
Altitude
X
X
Moisture barrier seal
X
X
Immersion
N/A
Group IV
Fungus
X
Group V
Gun blast
N/A
Boom finish
X
X
Boom operating force
X
X
6
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