G. This Headset-Microphone Kit is designed to fit both the regular and large size Combat Vehicle Crewman\'s Helmet. The electrical characteristics of the kit are compatible with Tactical Radio Systems, such as the VRC-12.

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MIL-DTL-55535A

TABLE IV. Group B inspection.

Inspection

Requirement

Inspection

paragraph

Microphone

Dielectric strength

Earphone

Overload

Impedance

Dielectric strength

Switch with cord

Dielectric strength

Headset-Microphone Kit

Interchangeability

4.5.3 Group C inspection. This inspection shall consist of the inspection specified in table V and shall

be performed on sample units that have been subjected to and met group A and B inspections.

4.5.3.1 Sampling for inspection of equipment. Sampling comprises two phases.

4.5.3.1.1 Initial sampling. Ten (10) samples of the complete headset-microphone kit and six (6)

samples of the switch assembly shall be selected at random from the first 1,000 units produced on the

order or contract. These samples comprise the first conformance inspection lot. The ten samples of the

headset-microphone kit shall be subdivided into 5 (five) pairs and designated as C-1 through C-5. These

pairs shall be subjected to group C inspection, as shown in table V. The six samples of the switch

assembly shall be designated as C-6 and subjected to the switch life test, as specified in table V.

4.5.3.1.2 Production sampling. Subsequent to the initial sampling, 6 (six) samples of the complete

headset-microphone kit and 2 (two) samples of the switch assembly shall be selected at random from

each subsequent 1,000 units produced on the order or contract. These samples comprise production

conformance group C inspection lots. The 6 (six) samples of the headset-microphone kit shall be

subdivided into 3 (three) pairs (as before) and designated as C-3 through C-5. These pairs shall be

subjected to group C inspection, as shown in table V. The 2 (two) samples of the switch assembly shall

be designated as C-6 (as before) and subjected to the switch life test, as specified in table V.

4.5.3.1.3 Orders for less than 1,000 units. Orders for less than 1,000 units shall be subject to sampling

and group C testing in the same manner as is required on orders for more than 1,000 units. The number

of units constituting the basis of such inspection, however, is reduced from 1,000 to 100. An equal

sampling and group C inspection is also required on the last 100 units produced on the order.