Product Specifications Gaskets. Thickness compressed. Reactivity, to typical aviation metallic and non-metallic surfaces. This method is to be used only for antenna gasket installations between an antenna and aluminum aircraft skin or ground plane. This method is to be used only for non-conductive antenna gasket installations. Antenna Gasket Installation. An Applicable Sealant for Sensors and Probes. An Aesthetic Technical Build for Standard Sealing Applications HI-TAK conductive antenna gaskets are constructed with polyurethane-encapsulated aluminum mesh carriers that are integrated to achieve excellent bonding.
The gaskets are ideal for: Preventing corrosion from direct electrical and electrochemical corrosive agents. Compatibility with metallic and painted surfaces - which ensures optimal bonding when applied on antenna components Ease of removal after installation, simplifying periodic repairs and maintenance tasks Learn More. EMC problems in commercial applications were first noted worldwide in the s when early broadcast radios were being installed in automobiles. Reception was degraded by ignition noise and electrostatic buildup caused by non-conductive rubber tires.
It required shielding of the vehicle ignition system, regulator and generator. With the increased use of mobile military radio communications, SCL became inadequate.
In the period — , each major military agency imposed its own EMC specifications. These specifications limited the levels of conducted and radiated emissions, and they set susceptibility levels which systems and equipment must reject. These specifications also detailed the test configurations and methods for demonstrating compliance. Unfortunately, over this period of time, the various military EMC standards diverged from each other in test frequency ranges, limits and required test equipment.
The differences made it quite expensive for a test lab or manufacturer to be fully equipped to test to all EMC specifications. In the US Department of Defense enacted a comprehensive electromagnetic compatibility program that charged the military services to build EMC into all of their communications and electronics equipment.
That program resulted in in military standards requirements , methods and definitions and acronyms. Subsequent revisions were designated B, C, and D. Prior revision levels A-E may still be specified for testing.
The designer of military electronic equipment has an abundance of guidance available for successfully meeting the EMC demands of the intended operating environments. Active military standards Table 1 specify a variety of scopes, environmental sub-categories, limits and test methods clearly and in great detail.
Measurement of effectiveness of cable, connector, and weapons enclosure shielding and filters in precluding Hazards of electromagnetic radiation to ordnance. The most commonly-used MIL standards are subsystems and equipment and systems , and they apply to ground-based, shipboard and airborne applications. In addition to the EMC standards listed in Table 1, there are a number of handbooks available that provide procedural, EMC assessment and design guidance for specific military applications. These provide guidance only, and are not to be construed as requirements.
A list of relevant handbooks is given in Table 2. Generally, these handbooks are tutorial in nature, clearly written, and with explanations of the underlying physical principles. They provide invaluable assistance to the equipment or systems designer. Finally, there are very detailed documentation specifications associated with military EMC standards.
Design techniques and procedures. The EMICP [Electromagnetic Interference Control Procedures] shall describe the specific design techniques and procedures used to meet each emission and susceptibility requirement, including the following:.
This DID also requires, among other items, analysis results demonstrating how each applicable requirement is going to be met and developmental testing testing to be performed during development such as evaluations of breadboards, prototypes, and engineering models. For the equipment designer, these points to be documented constitute a virtual punch list of EMC design attributes.
Specific test requirements are grouped according to conducted C or radiated R coupling, and emissions E or susceptibility S. Thus the tests are designated:. The dashes are replaced by the test reference number.
Over time, the numerical test designations have transitioned from 01 to , 02 to , etc. Click here to view Table 4. Applicability added for surface ships; setup modifications suggested. Testing with power off is deleted; procedure allows reduction of calibrated test signal if necessary. Applicability and frequency ranges modified. You may delete a document from your Alert Profile at any time.
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