MIL-STD-461 Military EMC Testing

Compatible Electronics provides MIL-STD-461 pre-compliance and compliance EMC testing for military, aerospace, and defence electronics — emissions and susceptibility testing at our Lake Forest facility with 10 OATS and 7 semi-anechoic chambers.

MIL-STD-461 Pre-Compliance & Compliance Emissions & Susceptibility Lake Forest, CA

What is MIL-STD-461?

MIL-STD-461 is the US Department of Defense standard for the electromagnetic interference (EMI) characteristics — both emissions and susceptibility — of electronic, electrical, and electromechanical equipment and subsystems designed for military applications. It defines the requirements and test limits for conducted and radiated emissions, conducted susceptibility, and radiated susceptibility, and is referenced in military contracts, weapons system specifications, and defence procurement programmes worldwide.

MIL-STD-461 testing is used for ground, airborne, shipboard, submarine, and space applications, with tailoring applied to select the appropriate test requirements for each platform. It is closely related to RTCA DO-160 which covers commercial avionics — both standards address environmental EMC for aerospace electronics but for different market segments. Our pre-compliance testing and EMC design consulting services are particularly valuable for defence programmes where compliance failures late in the programme are costly.

🔎 MIL-STD-461 revisions: The current version is MIL-STD-461G (2015). Earlier revisions (461E, 461F) may be specified in legacy contracts. The specific revision and applicable test requirements are defined in the contract Statement of Work (SOW) and the Equipment Under Test (EUT) specification. Compatible Electronics can advise on applicable requirements and tailor the test plan accordingly. Contact our EMC engineering team to discuss your programme.

MIL-STD-461 Test Requirements Overview

Requirement	Type	Description
CE101	Emissions	Conducted emissions — power leads, 30 Hz to 10 kHz
CE102	Emissions	Conducted emissions — power leads, 10 kHz to 10 MHz
CE106	Emissions	Conducted emissions — antenna terminals, 10 kHz to 40 GHz
CS101	Susceptibility	Conducted susceptibility — power leads, 30 Hz to 150 kHz
CS106	Susceptibility	Conducted susceptibility — transients on power leads
CS114	Susceptibility	Bulk current injection — 10 kHz to 400 MHz
CS115	Susceptibility	Bulk current injection — impulse excitation
CS116	Susceptibility	Damped sinusoidal transients — cables and power leads, 10 kHz to 100 MHz
RE101	Emissions	Radiated emissions — magnetic field, 30 Hz to 100 kHz
RE102	Emissions	Radiated emissions — electric field, 2 MHz to 18 GHz (or 40 GHz)
RS101	Susceptibility	Radiated susceptibility — magnetic field, 30 Hz to 100 kHz
RS103	Susceptibility	Radiated susceptibility — electric field, 2 MHz to 40 GHz

Applications & Platform Types

Ground Applications

Army & Ground Systems

Vehicle electronics and subsystems
Ground support equipment
Command and control systems
Communications equipment
Portable and man-pack equipment

Airborne Applications

Aerospace & Avionics

Airborne electronics and avionics
UAV / UAS systems and payloads
Rotary and fixed-wing aircraft equipment
See also: RTCA DO-160 commercial avionics
Space platform electronics

Naval & Marine

Shipboard & Submarine

Surface ship electronic systems
Submarine electronics
Naval weapons system components
Below-deck and topside equipment
Marine C4I systems

Why Compatible Electronics for MIL-STD-461?

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Pre-Compliance Testing

Identify failure modes early in the programme — before formal compliance testing. Our engineers find and resolve EMI issues cost-effectively using the same measurement methods as full MIL-STD-461 testing.

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EMC Design Consulting

Early design-stage consulting on shielding, filtering, grounding, and PCB layout to ensure MIL-STD-461 compliance is designed in — not added at the end.

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10 OATS & 7 Semi-Anechoic Chambers

Multiple facilities mean fast scheduling and short turnaround. Large EUTs — racks, vehicle-mounted systems, ground support equipment — accommodated at Lake Forest.

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EMC Troubleshooting

When failures occur during compliance testing, our engineers help identify root cause and implement fixes quickly — reducing costly re-test delays in the programme schedule.