MIL STD 461F Training | Updated with MIL-STD-461G

MIL STD 461F Training, Now Updated with MIL-STD-461G

MIL STD 461F training provides the information and skills required to implement MIL-STD 461F. This standard regulates boundary and relevant verification criteria for the regulation of the electromagnetic interference (EMI) emission and vulnerability features of electronic, electrical, and electromechanical instruments and subsystems planned or acquired for application by actions and organizations of the Department of Defense (DoD). The stated equipment and subsystems could be applied individually or as a joint sector of other subsystems or systems.

MIL-STD-461F standard (upgraded to MIL-STD-461G) establishes interface and associated verification requirements for the control of the electromagnetic interference (EMI) emission and susceptibility characteristics of electronic, electrical, and electromechanical equipment and subsystems designed or procured for use by activities and agencies of the DoD.

MIL-STD-461 contains about 20 test parameters, of which 10-12 are relevant for the majority of the products. The standard is very systematic, with set terms for the different test parameters.

All emission test parameters have E as the last letter. For example: RE – Radiated Emission for all radiated emission tests. Likewise, immunity parameters are referred to with an S for Susceptibility, which is the standard’s term for vulnerability. Susceptibility is the inverse expression for immunity. For example: Conducted Susceptibility for conducted immunity tests. In addition, the tests have 3-digit serial numbers.

Experts in this field report that MIL-STD-461 testing is important for safety and mission success. Space-constrained programs and applications that utilize numerous embedded computer systems are growing in number which means the propensity for EMI between them is growing as well.

MIL-STD-461 is a tried-and-true electromagnetic testing standard dating back as far as 1967, when the DoD first issued the document to establish EM compatibility requirements for defense technology as parts of its Electromagnetic Compatibility Program.

In general, the MIL-STD-461 document is applied to electrical or electronic systems such as rugged servers and workstations used in military programs and applications.

An MIL-STD-461 certification ensures that a system doesn’t suffer from EM interference or disrupt other devices near it.

Each MIL-STD-461 requirement is identified by three-digit number succeeding a two-letter combination. For example:

• Conducted emissionsrequirements are designated by CE
• Radiated emissionsrequirements are designated by RE
• Conducted susceptibilityrequirements are designated by CS
• Radiated susceptibilityrequirements are designated by RS

Conducted emissions refer to EM energy generated by a system or device and transmitted through its power cord via an electric current.

This standard is best suited for items that have the following features:

• Electronic enclosures that are no larger than an equipment rack
• Electrical interconnections that are discrete wiring harnesses between enclosures
• Electrical power input derived from prime power sources

However, this standard is not directly applied to items such as modules located inside electronic enclosures or entire platforms. But the principles in this standard may be useful as a basis for developing suitable requirements for those applications.

Data item requirements are also included.

New updates on MIL-STD-461G has been added to the course. The MIL STD Revision G (MIL-STD-461G) has affected several existing tests, procedures and testing methodology, as well as adding new tests and test procedures not referenced in the past and previous specs.

MIL STD 461F is perfect for elements possessing the following features: electronic enclosures that are no greater than an equipment rack, electrical interconnections that are distinct wiring harnesses between enclosures, and electrical power input originated from major power sources. This standard should not be directly used for the items such as modules placed within electronic enclosures or the whole platforms. The rules in this standard may be valuable as a foundation for emerging appropriate criteria for those applications. Data item requirements are also discussed.

TONEX Training Format

MIL STD 461F training will be delivered as a combination of both theory and practice. Students will learn about the theory of this standard via lectures and presentations. Each module is followed by practical activities including labs, small/group activities, and hands-on workshops.

Audience

MIL STD 461F training is a 3-day course designed for:

• Test Engineers
• Test Technicians and Operators
• MIL-STD Design Engineers
• The source or troubleshoot MIL-STD equipment team personnel
• Interpreting MIL-STD data team personnel

Training Objectives

Upon the completion of MIL STD 461F training, the attendees are able to:

• Understand the language of the MIL-STD 461F
• Discuss the scope, purposes, concepts, and applications of MIL-STD 461F
• Design and adjust MIL-STD 461F to comply with the needs of their organization
• Understand the acronyms used in the standard
• Provide the requirements for the standard
• Design the verification tests
• Gather the required data
• Evaluate the data and apply them for the standard

Course Outline

Overview of MIL-STD 461F

• Introduction
• Scope
• Applications
• Required documentations; governmental and non-governmental
• Definitions
• General requirements

Requirements

• General requirements
• Interface requirements
  • Joint procurement
  • Filtering for the navy applications
  • Self-compatibility
  • Non-developmental items (NDIs)
  • Government Furnished Equipment (GFE)
  • Switching transient
  • Interchangeable modular equipment
• Verification requirements
  • Measurement thresholds
  • Shielded enclosures
  • Test sites
  • Atmospheric electromagnetic level
  • Ground plane
  • Power source impedance
  • Typical test protections
  • EUT tests structures
  • Running EUT
  • Measurement tools
  • Measuring tools calibration

Exclusive Requirements

• Differences between EMI control criteria and planned implementations
• Emissions and vulnerability criteria, limits, and test protocols

CE101, Conducted Emissions, Power Leads, 30-10 kHz

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration

CE102, Conducted Emissions, Power Leads, 10k-10 MHz

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration

CE106, Conducted Emissions, Antenna Terminals, 10k-40 GHz

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration

CS101, Conducted Susceptibility, Power Leads, 30-150 kHz

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration

CS103, Conducted Susceptibility, Antenna Port, Intermodulation, 15k- 10 GHz

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment

CS104, Conducted Susceptibility, Antenna Port, Rejection of Undesired Signals, 30-20 GHz

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment

CS105, Conducted Susceptibility, Antenna Port, Cross Modulation, 30-20 GHz

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment

CS106, Conducted Susceptibility, Transient, Power Leads

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration

CS109, Conducted Susceptibility, Structure Current, 60-100 kHz

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration

CS114, Conducted Susceptibility, Bulk Cable Injection, 10k- 200MHz

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration

CS115, Conducted Susceptibility, Bulk Cable Injection, Impulse Excitation

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration

CS116, Conducted Susceptibility, Damped Sinusoidal Transients, Cables and Power Leads, 10k-100MHz

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration

RE101, Radiated Emissions, Magnetic Field, 30-100kHz

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration

RE102, Radiated Emissions, Electric Field, 10k-30GHz

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration

RE103, Radiated Emissions, Antenna Spurious and Harmonic Outputs, 10k-40GHz

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration

RS101, Radiated Susceptibility, Magnetic Field, 30-100kHz

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration
• RS101 alternative test procedures, AC Helmholtz coil
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration

RS103, Radiated Susceptibility, Electric Field, 2M-40 GHz

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration
• RS103 alternative test procedures, reverberation chamber
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration

RS105, Radiated Susceptibility, Transient of Electromagnetic Field

• Applicability
• Restrictions
• Test protocols
  • Goal and purposes
  • Test equipment
  • Implementation
  • Protocols
  • Data demonstration

MIL-STD-461G

• Changes from MIL-STD-416F to MIL-STD-461G
• Conducted Susceptibility CS 117 – Induced Lightning Transients, Cables and Power Leads, and Conducted
• Susceptibility CS 118 – Personnel Borne Electrostatic Discharge

MIL STD 461F Training