RadiMation Application Note 145: Difference between revisions

From RadiWiki
Jump to navigation Jump to search
Line 124: Line 124:


== Conclusion ==
== Conclusion ==
The MILSTD RE102 Test has a variety of different settings. In this application note it can can be seen that it is easily configured in a "Test Setup File" and tested with RadiMation.
The MILSTD RE102 test has a variety of different settings. In this application note it can can be seen that it is easily configured in a "Test Setup File" and tested with RadiMation.

Revision as of 12:35, 23 January 2023

How to perform a MIL-STD RE102 Radiated emission test[edit]

This application note explains how the MIL-STD RE102 Radiated Emission test can be performed with RadiMation®.

The "RE102, radiated emissions, electrical field" test is applicable to equipment, subsystem enclosures and all interconnecting cables and is used to verify that the electrical field emissions from the EUT and cabling do not exceed the specified requirements. Other standards are based on this test (for example DO160) and these are comparable to this test.

The RE102 test is further described in the MIL-STD-461.

Equipment used[edit]

For this test four antennas are used.

Antenna Frequency range
Rod antenna 10 kHz to 30 MHz
Biconical antenna 30 MHz to 200 MHz
Double ridge horn 200 MHz to 1 GHz
Double ridge horn 1 GHz to 18 GHz

The following devices should be configured:

  • Receiver
  • 4 Antennas
  • Cables

Optionally[edit]

  • Antenna polarizer / tower, above 30 MHz both vertical and horizontal polarizations should be measured.

Configuration of the test sites[edit]

For each frequency range a separate test site has to be created and configured. Each test site will use a different antenna:

Testsite Antenna
MilStd RE102 10 kHz - 30 MHz Rod antenna
MilStd RE102 30 MHz - 200 MHz Biconical antenna
MilStd RE102 200 MHz - 1 GHz Horn antenna
MilStd RE102 1 GHz - 18 GHz Horn antenna

RE102 Test layout.png

Device name Tab in testsite configuration window note
Antenna Devices 1 Antenna for the required frequency range
Antenna tower Devices 1 Optional antenna tower
Spectrum Analyser Devices 2 The receiver used for the test
Cable preamp -> analyser Cables Cable with a correction file specified for the loss

Perform the test[edit]

To perform the test start a Radiated Emission Multiband test:

   Menu.svg Tests
      Menu.svg Radiated Emission
         Menu.svg Multiband

Configure 6 bands with their applicable frequency range, bandwidth, polarization and used test site (antenna).
When it is not possible to automatically switch and or position the antenna, multiple tests can be created and executed separately.

Band Frequency range RBW Step size Measure time receiver Measure time FFT receiver Polarisation Testsite Antenna
Band 1 10 kHz - 150 kHz 1 kHz 500 Hz 0.15 S 1 S Vertical MilStd RE102 10 kHz - 30 MHz Rod antenna
Band 2 150 kHz - 10 MHz 10 kHz 5 kHz 0.015 S 1 S Vertical MilStd RE102 150 kHz - 30 MHz Rod antenna
Band 3 10 MHz - 30 MHz 10 kHz 5 kHz 0.015 S 0.15 S Vertical MilStd RE102 150 kHz - 30 MHz Rod antenna
Band 4 30 MHz - 200 MHz 100 kHz 50 kHz 0.015 S 0.15 S Both MilStd RE102 30 MHz - 1 GHz Biconical antenna
Band 5 200 MHz - 1 GHz 100 kHz 50 kHz 0.015 S 0.15 S Both MilStd RE102 30 MHz - 1 GHz Horn antenna
Band 6 1 GHz - 18 GHz 1 MHz 500 kHz 0.015 S 0.015 S Both MilStd RE102 1 GHz - 18 GHz Horn antenna

For more information regarding antenna distances, heights and required antenna positions refer to section 5.18.3.3 c. EUT testing, of the RE102 standard see page MIL-STD-461.

RE102 Test Configuration.png


ScreenElementDescription.svg Start The start frequency of the test. For example 10 kHz.
ScreenElementDescription.svg Stop The stop frequency of the test. For example 150 kHz.
ScreenElementDescription.svg Reference Level The reference level set in an analyser, not used in a receiver
ScreenElementDescription.svg Attenuation The attenuation set in the receiver
ScreenElementDescription.svg RBW The RBW set in the receiver
ScreenElementDescription.svg Step size The step size set in the receiver
ScreenElementDescription.svg Measure time The measure time set in the receiver
ScreenElementDescription.svg Preamplifier The preamplifier setting set in the receiver
ScreenElementDescription.svg Traces The type of trace set in the receiver
ScreenElementDescription.svg Test Equipment The equipment used for the measurement
ScreenElementDescription.svg Location type Set this to Antenna height, distance, polararization and angle
ScreenElementDescription.svg Max Height The max height for the antenna tower
ScreenElementDescription.svg Min Height The min height for the antenna tower
ScreenElementDescription.svg Steps The number of height positions to measure
ScreenElementDescription.svg Move during measurement If the antenna tower can move during the measurement
ScreenElementDescription.svg Optimize Height Find the optimal emission around a certain height
ScreenElementDescription.svg Distance The used antenna distance
ScreenElementDescription.svg Antenna Polarization Which polarization is used, Vertical, Horizontal or both
ScreenElementDescription.svg Start Angle The min turn table angle`
ScreenElementDescription.svg End Angle The max turn table angle
ScreenElementDescription.svg Steps The number of angles to measure
ScreenElementDescription.svg Turn during measurement If the turn table can move during the measurement
ScreenElementDescription.svg Optimize Angle Find the optimal emission around a certain angle
ScreenElementDescription.svg EUT Angle Offset The offset of the EUT on the table
ScreenElementDescription.svg Limit Lines The applicable limit lines can be added
ScreenElementDescription.svg All peaks above x below the limit line No peaks should be measured in RE102
ScreenElementDescription.svg Peak detection No peaks should be measured for RE102
ScreenElementDescription.svg Final peak measurement No final peak measurement is needed for RE102


When all parameters are configured for the RE102 test, press Start Test to perform the emission measurement.

Review the test result[edit]

After performing the test it is possible to review the test data. RE102 Test Result.png

Conclusion[edit]

The MILSTD RE102 test has a variety of different settings. In this application note it can can be seen that it is easily configured in a "Test Setup File" and tested with RadiMation.