NOTE: This draft, dated 24 November 199816 Jun 99, has not been approved and is subject to modification.DO NOT USE PRIOR TO APPROVAL(Project EMCS-0174)METRICMIL-STD-461EDATE_SUPERSEDINGMIL-STD-461D11 JANUARY 1993MIL-STD-462D11 JANUARY 1993DEPARTMENT OF DEFENSEINTERFACE STANDARDREQUIREMENTS FOR THE CONTROL OF ELECTROMAGNETIC INTERFERENCE CHARACTERISTICS OF SUBSYSTEMS AND EQUIPMENTAMSC XXXXAREA EMCSDISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.FOREWORD1. This military standard is approved for use by all Departments and Agencies of the Department of Defense.2. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: ASC/ENSI, 2530 Loop Road West, Wright-Patterson Air Force Base, OH 45433-7101, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.3. The test requirements previously contained in MIL-STD-462 used to verify compliance with MIL-STD-461 have been included in this version of MIL-STD-461.4. The stated interface requirements represent the minimumare considered necessary to provide reasonable confidence that a particular subsystem or equipment complying with these requirements will function within their designated design tolerances when operating in their intended electromagnetic environment (EME). These requirements may be tailored by the procuring activity for each application and intended operational electromagnetic environment (EME). The procuring activity should consider tailoring the individual requirements to be more or less severe based on the design features of the intended platform and its mission in concert with personnel knowledgeable about electromagnetic compatibility issues affecting platform integration. 65. An appendix is included which provides the rationale and background for each requirement and verification section.76. A committee consisting of representatives of the Army, Air Force, Navy, other DoD agencies, and Industry prepared this document.1. SCOPE11.1 Purpose.11.2 Application.11.2.1 General applicability.11.2.2 Tailoring of requirements.11.3 Emission and susceptibility designations.112. APPLICABLE DOCUMENTS322.1 Government documents.322.1.1 Other Government documents, drawings, and publications.322.2 Non-Government publications.432.3 Order of precedence.543. DEFINITIONS653.1 General.653.2 Acronyms used in this standard.653.3 Above deck.653.4 Below deck.653.5 External installation.653.6 Flight-line equipment.763.7 Internal installation.763.8 Metric units.763.9 Non-developmental item.763.10 Safety critical.763.11 Test setup boundary.764. GENERAL REQUIREMENTS874.1 General.874.2 Interface Requirements.874.2.1 Joint procurement.874.2.2 Filtering (Navy only).874.2.3 Self-compatibility.874.2.4 Non-Developmental Items (NDI).874.2.4.1 Commercial off-the-shelf equipment.874.2.4.1.1 Selected by contractor.874.2.4.1.2 Specified by procuring activity.874.2.4.2 Procurement of equipment or subsystems having met other EMI requirements.984.2.5 Government Furnished Equipment (GFE).984.2.6 Switching transients.984.3 Verification requirements.984.3.1 Measurement tolerances.984.3.2 Shielded enclosures.1094.3.2.1 Radio Frequency (RF) absorber material.1094.3.3 Other test sites.1094.3.4 Ambient electromagnetic level.1094.3.5 Ground plane.1094.3.5.1 Metallic ground plane.11104.3.5.2 Composite ground plane.11104.3.6 Power source impedance.11104.3.7 General test precautions.11104.3.7.1 Accessory equipment.11104.3.7.2 Excess personnel and equipment.11104.3.7.3 Overload precautions.11104.3.7.4 RF hazards.12114.3.7.5 Shock hazard.12114.3.7.6 Federal Communications Commission (FCC) restrictions.12114.3.8 EUT test configurations.12114.3.8.1 EUT design status.12114.3.8.2 Bonding of EUT.12114.3.8.3 Shock and vibration isolators.12114.3.8.4 Safety grounds.12114.3.8.5 Orientation of EUTs.12114.3.8.6 Construction and arrangement of EUT cables.13114.3.8.6.1 Interconnecting leads and cables.13124.3.8.6.2 Input power leads.13124.3.8.7 Electrical and mechanical interfaces.13124.3.9 Operation of EUT.14124.3.9.1 Operating frequencies for tunable RF equipment.14134.3.9.2 Operating frequencies for spread spectrum equipment.14134.3.9.3 Susceptibility monitoring.14134.3.10 Use of measurement equipment.14134.3.10.1 Detector.14134.3.10.2 Computer-controlled r