MIL-DTL-24223D(SH)
TABLE II. Conformance inspection.
Group
Tests
Requirement
Verification
Frequency response and Sound pressure
B
output (production test)
General examination (including volume
A
control)
B
Quality of reproduction
B
Power input
B
Polarity
B
Stray magnetic field (if required)
C
Temperature
C
Humidity
C
Sound pressure distribution
C
Dielectric strength
C
Insulation resistance
C
Immersion
C
Endurance
C
Salt spray
C
Vibration
C
Shock
C
Gun blast and Jet blast (if required)
4.4.2 Group B. Each loudspeaker selected in accordance with 4.3.2 shall be subjected to the Group B tests
shown in TABLE II, generally in the order listed. The results of each test shall be compared with the requirements
of the specification. Failure to conform to the requirements of this specification for any Group B test shall be
counted as a defect, and the equipment shall not be offered for delivery.
4.4.3 Group C. Each loudspeaker selected in accordance with 4.3.3 shall be subjected to the Group C tests
shown in TABLE II, generally in the order listed. The results of each test shall be compared with the requirements
of this specification.
4.5 Inspection procedures.
4.5.1 General examination. The completed unit shall be given a thorough examination to determine that it
conforms to the applicable specifications and approved working drawings with respect to material, finish,
workmanship, construction, assembly, dimensions, weight, and marking of identification and information plates.
The examination shall be limited to those examinations that may be performed without disassembling the unit in
such a manner that its performance, durability, or appearance would be affected. This examination should include a
check of all operating controls and circuit functions.
4.5.2 Quality of reproduction. A 70-volt signal shall be applied across the "MCC.COM" "MC. 70V.+"
terminals of the loudspeaker with the volume adjustment set to "FULL". The frequency shall be varied over the
frequency range shown in the specification sheets, and the acoustic output checked to determine conformance with
8
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business