Specific Radiated Emissions Requirements Mil-Std 461E

RE101 - Magnetic Field (30 Hz to 100 kHz)

D.L.S. performs this specialized testing requirement that is intended to control magnetic fields for applications where equipment is presenting an installation potentially sensitive to magnetic induction to lower frequencies. This test will verify that the magnetic field emissions from the EUT and its associated electrical interfaces do not exceed specified requirements. A common example for this test is a tuned receiver that operates within the frequency range of the test parameters. The applications for this test are as follows:

Submarines
Surface Ships
Army Aircraft (Including Flight Line)
Navy Aircraft with Anti Submarine Warfare

Additional Information about RE101

This test is applicable to all equipment and subsystem enclosures, including electric cable interfaces, and it is not applicable with respect to radiation from antennas. For submarines, two different test specifications are identified, with the location with respect to the pressure hull the deciding factor.

RE102 Electric Field 10 kHz to 18 GHz

D.L.S. regularly performs this test, which is one of the most widely identified requirements for electrical and electronic equipment. The basic intent is to protect sensitive receivers from interference that is coupled through antennas associated with a receiver, and verify that the electric field emissions from the EUT and its associated cabling do not exceed specified limits. The requirement matrix varies depending on platform and application. The platforms required to meet these test parameters are:

Submarines
Surface Ships
Space Equipment and Systems
Army Aircraft - All
Navy Aircraft - All
Air Force Aircraft - All
Ground Systems - Army
Ground Systems - Navy
Ground Systems - Air Force

Specific Requirements - Frequency for RE102

Ground Systems 2 MHz to 18 GHz
Surface Ships 10 kHz to 18 GHz
Submarines 10 kHz to 18 GHz
Aircraft-Army 10 kHz to 18 GHz
Aircraft-Navy and Air Force 2 MHz to 18 GHz
Space 10 kHz to 18 GHz

RE103 Antenna Spurious and Harmonic Outputs 10 kHz to 40 GHz

D.L.S. performs this test as a methodology to confirm that the radiated spurious and harmonic emissions from transmitters do not exceed specified limit requirements. This test has different starting frequencies depending on the actual operating frequency of the transmitters. The platforms identified below have limited application, as the transmitter on each platform can differ somewhat.

Submarines
Surface Ships
Space Equipment and Systems
Army Aircraft - All
Navy Aircraft - All
Air Force Aircraft - All
Ground Systems - Army
Ground Systems - Navy
Ground Systems - Air Force

Start Frequency of Test
10 MHz
100 kHz
1 MHz
10 MHz