MIL-STD-469 Radar Engineering Interface Requirements, Electromagnetic Compatibility See Notice 1 For Replacement InformationThis standard establishes the engineering interface requirements to control the electromagnetic emission and susceptibility characteristics of all new military radar equipment and systems operating between 100 megahertz MHz, and 100 gigahertz GHz, to ensure EMC in all intended operational environments, and to conserve the frequency spectrum available to military radar systems.

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MIL-STD-469B

APPENDIX A

MEASUREMENTS

10.  SCOPE AND APPLICATION

10.1  Scope.  This appendix should be used as guidance to determine compliance with the emission and susceptibility requirements of section 5 of this standard.  New radar designs may require alternate test procedures to determine compliance (see 4.1.6).

10.2  Application.  The measured data obtained from applying the test procedures or the alternate procedures herein (see 10.1), should provide the emission and susceptibility characteristics of the radar, referenced to the terminals of the radar antenna. The test procedures should provide the antenna characteristics at a point which describes the far field radiation. The measurements of certain radar parameters provide data which are interrelated. The transmitter emission spectrum characteristics for a pulsed output, for example, are a function of power output, pulse width and pulse rise time parameters and to some extent, the frequency

stability. The measurements of these interrelated parameters should be made as close in time as practical.

20.  APPLICABLE DOCUMENTS

20.1  Government documents.

20.1.1  Specifications, standards, and handbooks.  The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation (see 6.2).

STANDARDS MILITARY

MIL-STD-449  Radio Frequency Spectrum Characteristics, Measurement of

MIL-STD-810  Environmental Test Methods and Engineering Guidelines

(Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.)

30.  INSTRUMENTATION

30.1  The test instruments required for measurement of specific equipment parameters

are shown in the sample block diagrams for individual test procedures in Appendix A. These  instruments should be capable of producing the test results described for each test procedure. Detailed identification of all measurement and calibration instruments and calibration charts for all equipment used in the performance of these tests should be provided in the test report.

30.2  The frequency of test signal generators should be determined during the measurement procedures with a frequency meter or counter assuring the desired degree of accuracy. The signal generator output impedance should be unbalanced 50 ohm, resistive, with a VSWR less than 1.3:1. For measurements where modulation or deviation is required, the percentage of modulation or deviation should be known within 5 percent.

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