MIL-PRF-87819 Headset-Microphone, \(Hearing Protective Type, High And Moderate Ambient Noise Levels\), General Specification ForThis specification covers the requirements for headset-microphone with rigid headband. These parts meet established requirements for communications equipment used to protect against hazardous noise exposure, and are approved for use in certain high and moderate ambient noise level applications \(see 6.1\). The term headset is to be used interchangeably for headset-microphone and is used when referring to any of the articles covered in this specification.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11

MIL-PRF-87819B

(Copies of these documents are available online at https://www.ansi.org or from the American National

Standard Institute, 25 West 43 Street, 4 Floor, New York, NY 10036.)

ASTM INTERNATIONAL

ASTM D454

Test Method for Rubber Deterioration by Heat and Air Pressure.

ASTM D470

Standard Test Methods for Crosslinked Insulations and Jackets for Wire and

Cable.

ASTM D572

Test Method for Rubber-Deterioration by Heat and Oxygen.

ASTM D573

Test Method for Rubber Deterioration in an Air Oven.

ASTM D866

Standard Specification for Crosslinked Styrene-Butadiene (SBR) Synthetic

Rubber Jacket for Wire and Cable.

ASTM D3574

Standard Test Methods for Flexible Cellular Materials � Slab, Bonded, and

Molded Urethane Foams.

(Copies of these documents are available online at https://www.astm.org or from the ASTM International,

P.O. Box C700, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.)

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)

ISO -17025

General requirements for the competence of testing and calibration

laboratories

(Copies of these documents are available online at https://www.iso.ch or from the International

Organization for Standardization American National Standards Institute, 11 West 42 Street, 13 Floor,

New York, NY 10036.)

NCSL INTERNATIONAL

NCSL Z540.3

Requirements for the Calibration of Measuring and Test Equipment

(Copies of these documents are available online at https://www.ncsli.org or from NCSL International

2995 Wilderness Place, Suite 107 Boulder, Colorado 80301-5404)

2.4 Order of precedence. Unless otherwise noted herein or the contract, in the event of a conflict

between the text of this document and the references cited herein (except for related specification

sheets), the text of this specification takes precedence. Nothing in this specification, however,

supersedes applicable laws and regulations, unless a specific exemption has been obtained.

3. REQUIREMENTS

3.1 Specification sheets. The individual item requirements shall be as specified herein and in

accordance with the applicable specification sheet. In the event of any conflict between requirements of

this specification and the specification sheet, the latter shall govern.

3.2 Qualification. Headsets furnished under this specification shall be products that are authorized by

the qualifying activity for listing on the applicable qualified products list before contract award (see 4.4 and

3.3 Materials. Materials shall be as specified herein. However, when a definite material is not

specified, a material shall be used, which will enable the product to meet the performance requirements

of this specification. Acceptance or approval of any constituent material shall not be construed as a

guaranty of the acceptance of the finished product.