MIL STD 461 – Conducted Emissions
CE101 Conducted Emissions – Power Leads, 30 Hz to 10 kHz
This requirement is applicable for power leads, including returns, that obtain power from other sources not part of the EUT for surface ships, submarines, Army aircraft (including flight line) and Navy aircraft.
CE102 Conducted Emissions – Power Leads, 10 kHz to 10 MHz
This requirement is applicable from 10 kHz to 10 MHz for all power leads, including returns, which obtain power from other sources not part of the EUT. This test procedure is used to verify that electromagnetic emissions from the EUT do not exceed the specified requirements for power input leads, including returns.
CE106 Conducted Emissions – Antenna Terminal, 10 kHz to 40 GHz
This requirement is applicable to the antenna terminals of transmitters, receivers, and amplifiers. The requirement is not applicable to equipment designed with antennas permanently mounted to the EUT. The transmit mode portion of this requirement is not applicable within the bandwidth of the EUT transmitted signal or within ±5 percent of the fundamental frequency, whichever is larger. Depending on the operating frequency range of the EUT, the start frequency of the test is as follows:
EUT Operating Frequency Range
Start Frequency of Test
10 kHz to 3 MHz
3 MHz to 300 MHz
300 MHz to 3 GHz
3 GHz to 40 GHz
The end frequency of the test is 40 GHz or twenty times the highest generated or received frequency within the EUT, whichever is less. For equipment using waveguide, the requirement does not apply below eight-tenths of the waveguide’s cutoff frequency. RE103 may be used as an alternative for CE106 for testing transmitters with their operational antennas. RE102 is applicable for emissions from antennas in receive and standby modes for equipment designed with antennas permanently mounted to the EUT. This test procedure is used to verify that conducted emissions appearing at the antenna terminal of the EUT do not exceed specified requirements.