美军标 RE101测试 - MIL-STD-461E

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5.15 RE101, Radiated emissions, magnetic field, 30 Hz to 100 kHz.

5.15.1 RE101 applicability.
This requirement is applicable for radiated emissions from equipment and subsystem enclosures,
including electrical cable interfaces. The requirement does not apply to radiation from antennas.
For Navy aircraft, this requirement is applicable only for aircraft with an ASW capability.

5.15.2 RE101 limit.
Magnetic field emissions shall not be radiated in excess of the levels shown in Figures RE101-1
and RE101-2 at a distance of 7 centimeters.

5.15.3 RE101 test procedures.
5.15.3.1 Purpose.
This test procedure is used to verify that the magnetic field emissions from the EUT and its
associated electrical interfaces do not exceed specified requirements.

5.15.3.2 Test Equipment.
The test equipment shall be as follows:
a. Measurement receivers
b. Data recording device
c. Loop sensor having the following specifications:
(1) Diameter: 13.3 cm
(2) Number of turns: 36
(3) Wire: 7-41 Litz wire (7 strand, No. 41 AWG)
(4) Shielding: Electrostatic
(5) Correction factor: See manufacturer’s data for factors to convert measurement
receiver readings to decibels above one picotesla (dBpT).
d. LISNs
e. Ohmmeter
f. Signal generator

5.15.3.3 Setup.
The test setup shall be as follows:
a. Maintain a basic test setup for the EUT as shown and described in Figures 2 through 5 and 4.3.8.
b. Calibration. Configure the measurement setup as shown in Figure RE101-3.
c. EUT Testing. Configure the measurement receiving loop and EUT as shown in Figure RE101-4.

RE101 - MIL-STD-461E