Difference between revisions of "RadiMation Application Note 145"

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(Created page with "== How to perform a RE102 Radiated emission test == This application note explains how the RE102 Radiated Emission test can be performed with {{RadiMation}}. The RE102 test is...")
 
 
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== How to perform a RE102 Radiated emission test ==
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__NOTOC__
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This application note explains how the RE102 Radiated Emission test can be performed with {{RadiMation}}.
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== How to perform a MIL-STD-461 RE102 Radiated Emission test ==
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The RE102 test is described in the following document https://quicksearch.dla.mil/qsDocDetails.aspx?ident_number=35789
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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 those tests are very comparable to this test.
 +
 
 +
The exact requirements and test methods for the RE102 are specified in the [[MIL-STD-461]]. Depending on the tested product, the complete or a partial frequency range should be tested.
 +
 
 +
== Necessary equipment ==
 +
The following devices should be configured:
 +
* Receiver
 +
* One or more antennas
 +
* Cables
 +
 
 +
Depending on the frequency range that should be measured, up to four different antennas may be needed.
  
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== Equipment used ==
 
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For this test four antennas are used.
 
 
{|class="wikitable"
 
{|class="wikitable"
 
! Antenna || Frequency range
 
! Antenna || Frequency range
Line 16: Line 26:
 
| Double ridge horn || 1 GHz to 18 GHz
 
| Double ridge horn || 1 GHz to 18 GHz
 
|}
 
|}
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The following devices should be configured:
 
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* Receiver
 
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* 4 Antennas
 
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* Cables
 
  
 
=== Optionally ===
 
=== Optionally ===
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* Antenna polarizer / tower, above 30 MHz both vertical and horizontal polarizations should be measured.
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* Antenna polarizer / tower, because above 30 MHz both vertical and horizontal polarizations should be measured.
  
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== Configuration of the test sites ==
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== Configuration of the testsites ==
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Create a test site for each antenna / frequency range:
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The configuration of the equipment is an antenna connected with a cable to a receiver.
  
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Plaatje: datarecording device (PC) -> receiver -> cable -> antenna
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[[File:RE102_Test_layout.png]]
  
 +
The configuration of the testsite should thus contain the following devices:
 
{|class="wikitable"
 
{|class="wikitable"
 
! Device name || Tab in testsite configuration window || note
 
! Device name || Tab in testsite configuration window || note
Line 40: Line 46:
 
|-
 
|-
 
| Cable preamp -> analyser || Cables || Cable with a correction file specified for the loss
 
| Cable preamp -> analyser || Cables || Cable with a correction file specified for the loss
 +
|}
 +
 +
As different antennas are used for each frequency range, it is best to also create and configure multiple separate testsites. Each testsite will use a different antenna, and to make the distinction between the testsites, it is best to give them different names. For example like:
 +
{|class="wikitable"
 +
! Testsite || Antenna
 +
|-
 +
| MIL-STD RE102 10 kHz - 30 MHz || Rod antenna
 +
|-
 +
| MIL-STD RE102 30 MHz - 200 MHz || Biconical antenna
 +
|-
 +
| MIL-STD RE102 200 MHz - 1 GHz || Horn antenna
 +
|-
 +
| MIL-STD RE102 1 GHz - 18 GHz || Horn antenna
 
|}
 
|}
  
 
== Perform the test ==
 
== Perform the test ==
−
To perform the test start a Radiated Emission Multiband test:
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To perform the actual RE102 test, start a Radiated Emission Multiband test:
 
{{Menu|Tests|Radiated Emission|Multiband}}
 
{{Menu|Tests|Radiated Emission|Multiband}}
−
 
+
 
 +
The complete test from 10 kHz up to 18 GHz has different settings for different frequency bands. All these different bands can be configured.
 +
The test can be configured with 6 bands each using their applicable frequency range, bandwidth, polarization and used testsite (antenna).
 +
 
 +
When it is not possible to automatically switch and or position the antenna, multiple tests can be created and executed separately.
 +
 
 +
{|class="wikitable"
 +
! Band || Frequency range || RBW || Step size || Measure time receiver || Measure time FFT receiver || Polarization || Testsite || Antenna
 +
|-
 +
| Band 1 || 10 kHz - 150 kHz || 1 kHz || 500 Hz || 0.15 s || 1 s || Vertical || MIL-STD RE102 (10 kHz - 30 MHz) || Rod antenna
 +
|-
 +
| Band 2 || 150 kHz - 10 MHz  || 10 kHz || 5 kHz ||0.015 s || 1 s || Vertical || MIL-STD RE102 (150 kHz - 30 MHz) || Rod antenna
 +
|-
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| Band 3 || 10 MHz - 30 MHz  || 10 kHz || 5 kHz || 0.015 s || 0.15 s || Vertical || MIL-STD RE102 (150 kHz - 30 MHz) || Rod antenna
 +
|-
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| Band 4 || 30 MHz - 200 MHz || 100 kHz || 50 kHz || 0.015 s || 0.15 s || Both || MIL-STD RE102 (30 MHz - 200 MHz) || Biconical antenna
 +
|-
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| Band 5 || 200 MHz - 1 GHz || 100 kHz || 50 kHz || 0.015 s || 0.15 s || Both || MIL-STD RE102 (200 MHz - 1 GHz) || Horn antenna
 +
|-
 +
| Band 6 || 1 GHz - 18 GHz || 1 MHz || 500 kHz || 0.015 s || 0.015 s || Both || MIL-STD RE102 (1 GHz - 18 GHz) || Horn antenna
 +
|}
 +
 
 +
For more information regarding required antenna positions refer to section 5.18.3.3 c. EUT testing, of the [[MIL-STD-461]] RE102 standard.
 +
To automatically change the antenna position, an antenna tower could be used. When no antenna tower is available, multiple positions (heights) could be tested using a "Manual Controlled Antenna Tower", the "Manual Controlled Antenna Tower" will prompt the end-user to move the antenna manually when applicable.
 +
 
 +
In the following test setup, an EUT for "Ground applications, Navy Mobile & Army" is tested. This limit line starts at 2 MHz and ends at 18 GHz, therefore this test does not include the test site for "Band 1 (10 kHz - 150 kHz)"
 
[[File:RE102_Test_Configuration.png]]
 
[[File:RE102_Test_Configuration.png]]
  
 
{{ScreenElementDescriptionStart}}
 
{{ScreenElementDescriptionStart}}
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{{ScreenElementDescription|Start|The start frequency of the test. For example 10 kHz.}}
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{{ScreenElementDescription|Start|The start frequency of the test. For example 2 MHz.}}
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{{ScreenElementDescription|Stop|The stop frequency of the test. For example 150 kHz.}}
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{{ScreenElementDescription|Stop|The stop frequency of the test. For example 10 MHz.}}
 
{{ScreenElementDescription|Reference Level|The reference level set in an analyser, not used in a receiver}}
 
{{ScreenElementDescription|Reference Level|The reference level set in an analyser, not used in a receiver}}
 
{{ScreenElementDescription|Attenuation|The attenuation set in the receiver}}
 
{{ScreenElementDescription|Attenuation|The attenuation set in the receiver}}
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{{ScreenElementDescription|RBW|The RBW set in the receiver}}
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{{ScreenElementDescription|RBW|The RBW set in the receiver, see table with different bands for possible values}}
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{{ScreenElementDescription|Step size|The step size set in the receiver}}
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{{ScreenElementDescription|Step size|The step size set in the receiver, see table with different bands for possible values}}
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{{ScreenElementDescription|Measure time|The measure time set in the receiver}}
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{{ScreenElementDescription|Measure time|The measure time set in the receiver, see table with different bands for possible values}}
 
{{ScreenElementDescription|Preamplifier|The preamplifier setting set in the receiver}}
 
{{ScreenElementDescription|Preamplifier|The preamplifier setting set in the receiver}}
−
{{ScreenElementDescription|Traces|The type of trace set in the receiver}}
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{{ScreenElementDescription|Traces|The type of trace set in the receiver, for MIL-STD RE102 a peak detector is used}}
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{{ScreenElementDescription|Test Equipment|The equipment used for the measurement}}
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{{ScreenElementDescription|Test Equipment|The equipment used for the measurement, see table with different bands for possible values}}
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{{ScreenElementDescription|Location type|Set this to Antenna height, distance, polararization and angle}}
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{{ScreenElementDescription|Location type|Set this to "Antenna height, distance, polararization and angle"}}
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{{ScreenElementDescription|Max Height|The max height for the antenna tower}}
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{{ScreenElementDescription|Max Height|The maximum height for the antenna tower, configuration is depending on how many positions should be measured}}
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{{ScreenElementDescription|Min Height|The min height for the antenna tower}}
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{{ScreenElementDescription|Min Height|The minimal height for the antenna tower, configuration is depending on how many positions should be measured}}
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{{ScreenElementDescription|Steps|The number of height positions to measure}}
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{{ScreenElementDescription|Steps|The number of height positions to measure, configuration is depending on how many positions should be measured}}
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{{ScreenElementDescription|Move during measurement|If the antenna tower can move during the measurement}}
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{{ScreenElementDescription|Move during measurement|If the antenna tower can move during the measurement, not used during MIL-STD RE102 measurement}}
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{{ScreenElementDescription|Optimize Height|Find the optimal emission around a certain height}}
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{{ScreenElementDescription|Optimize Height|Find the optimal emission around a certain height, not used during MIL-STD RE102 measurement}}
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{{ScreenElementDescription|Distance|The used antenna distance}}
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{{ScreenElementDescription|Distance|The used antenna distance, 1 Meter for MIL-STD RE102}}
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{{ScreenElementDescription|Antenna Polarization|Which polarization is used, Vertical, Horizontal or both}}
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{{ScreenElementDescription|Antenna Polarization|Which polarization is used, Vertical, Horizontal or Both, above 30 MHz both polarization should be tested}}
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{{ScreenElementDescription|Start Angle|The min turn table angle`}}
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{{ScreenElementDescription|Start Angle|The minimal turn table angle}}
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{{ScreenElementDescription|End Angle|The max turn table angle}}
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{{ScreenElementDescription|End Angle|The maximum turn table angle}}
 
{{ScreenElementDescription|Steps|The number of angles to measure}}
 
{{ScreenElementDescription|Steps|The number of angles to measure}}
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{{ScreenElementDescription|Turn during measurement|If the turn table can move during the measurement}}
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{{ScreenElementDescription|Turn during measurement|If the turn table can move during the measurement, not applicable for MIL-STD RE102}}
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{{ScreenElementDescription|Optimize Angle|Find the optimal emission around a certain angle}}
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{{ScreenElementDescription|Optimize Angle|Find the optimal emission around a certain angle, not applicable for MIL-STD RE102}}
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{{ScreenElementDescription|EUT Angle Offset|The offset of the EUT on the table}}
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{{ScreenElementDescription|EUT Angle Offset|The offset of the EUT on the table, not applicable for MIL-STD RE102}}
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{{ScreenElementDescription|Limit Lines|The applicable limit lines can be added}}
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{{ScreenElementDescription|Limit Lines|The applicable limit line can be added, in this case "MIL-STD-461G RE102 Ground Applications, Navy Mobile & Army"}}
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{{ScreenElementDescription|All peaks above x below the limit line|No peaks should be measured in RE102}}
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{{ScreenElementDescription|All peaks above x dB below the limit line|Which level above x dB below the limit line should detect peaks, no peaks should be measured in MIL-STD RE102}}
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{{ScreenElementDescription|Peak detection|No peaks should be measured for RE102}}
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{{ScreenElementDescription|Peak detection|How many peaks should be detected automatically, no peaks should be measured for MIL-STD RE102}}
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{{ScreenElementDescription|Final peak measurement|No final peak measurement is needed for RE102}}
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{{ScreenElementDescription|Final peak measurement|It is possible to perform a final measurement on a peak with a specific detector, no final peak measurement is needed for RE102}}
 
{{ScreenElementDescriptionEnd}}
 
{{ScreenElementDescriptionEnd}}
  
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When all parameters are configured for the RE102 test, press "Start Test" to perform the measurement.
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When all parameters are configured for the RE102 test, press {{ScreenElement|Start Test}} to perform the emission measurement.
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Repeat the test for each point to test.
+
 
 +
== Review the test result ==
 +
Once the test is finished, the results of this test is stored in the EUT file, and available as one of the performed {{ScreenElement|Tests}} in the EUT file. Selecting the corresponding test result and pressing on {{ScreenElement|Info}} will show the test results again.
 +
 
 +
[[File:RE102_Test_Result.png]]
 +
 
 +
== Conclusion ==
 +
The MIL-STD RE102 test has to use multiple antennas and depending on the frequency band, different settings are configured. All these settings can be easily configured in a "Test Setup File" and tested with {{RadiMation}}.
 +
 
 +
[[Category:RadiMation Application Note]]

Latest revision as of 12:47, 5 December 2023

How to perform a MIL-STD-461 RE102 Radiated Emission test

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 those tests are very comparable to this test.

The exact requirements and test methods for the RE102 are specified in the MIL-STD-461. Depending on the tested product, the complete or a partial frequency range should be tested.

Necessary equipment

The following devices should be configured:

  • Receiver
  • One or more antennas
  • Cables

Depending on the frequency range that should be measured, up to four different antennas may be needed.

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

Optionally

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

Configuration of the testsites

The configuration of the equipment is an antenna connected with a cable to a receiver.

RE102 Test layout.png

The configuration of the testsite should thus contain the following devices:

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

As different antennas are used for each frequency range, it is best to also create and configure multiple separate testsites. Each testsite will use a different antenna, and to make the distinction between the testsites, it is best to give them different names. For example like:

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

Perform the test

To perform the actual RE102 test, start a Radiated Emission Multiband test:

   Menu.png Tests
      Menu.png Radiated Emission
         Menu.png Multiband

The complete test from 10 kHz up to 18 GHz has different settings for different frequency bands. All these different bands can be configured. The test can be configured with 6 bands each using their applicable frequency range, bandwidth, polarization and used testsite (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 Polarization Testsite Antenna
Band 1 10 kHz - 150 kHz 1 kHz 500 Hz 0.15 s 1 s Vertical MIL-STD RE102 (10 kHz - 30 MHz) Rod antenna
Band 2 150 kHz - 10 MHz 10 kHz 5 kHz 0.015 s 1 s Vertical MIL-STD RE102 (150 kHz - 30 MHz) Rod antenna
Band 3 10 MHz - 30 MHz 10 kHz 5 kHz 0.015 s 0.15 s Vertical MIL-STD RE102 (150 kHz - 30 MHz) Rod antenna
Band 4 30 MHz - 200 MHz 100 kHz 50 kHz 0.015 s 0.15 s Both MIL-STD RE102 (30 MHz - 200 MHz) Biconical antenna
Band 5 200 MHz - 1 GHz 100 kHz 50 kHz 0.015 s 0.15 s Both MIL-STD RE102 (200 MHz - 1 GHz) Horn antenna
Band 6 1 GHz - 18 GHz 1 MHz 500 kHz 0.015 s 0.015 s Both MIL-STD RE102 (1 GHz - 18 GHz) Horn antenna

For more information regarding required antenna positions refer to section 5.18.3.3 c. EUT testing, of the MIL-STD-461 RE102 standard. To automatically change the antenna position, an antenna tower could be used. When no antenna tower is available, multiple positions (heights) could be tested using a "Manual Controlled Antenna Tower", the "Manual Controlled Antenna Tower" will prompt the end-user to move the antenna manually when applicable.

In the following test setup, an EUT for "Ground applications, Navy Mobile & Army" is tested. This limit line starts at 2 MHz and ends at 18 GHz, therefore this test does not include the test site for "Band 1 (10 kHz - 150 kHz)" RE102 Test Configuration.png


ScreenElementDescription.png Start The start frequency of the test. For example 2 MHz.
ScreenElementDescription.png Stop The stop frequency of the test. For example 10 MHz.
ScreenElementDescription.png Reference Level The reference level set in an analyser, not used in a receiver
ScreenElementDescription.png Attenuation The attenuation set in the receiver
ScreenElementDescription.png RBW The RBW set in the receiver, see table with different bands for possible values
ScreenElementDescription.png Step size The step size set in the receiver, see table with different bands for possible values
ScreenElementDescription.png Measure time The measure time set in the receiver, see table with different bands for possible values
ScreenElementDescription.png Preamplifier The preamplifier setting set in the receiver
ScreenElementDescription.png Traces The type of trace set in the receiver, for MIL-STD RE102 a peak detector is used
ScreenElementDescription.png Test Equipment The equipment used for the measurement, see table with different bands for possible values
ScreenElementDescription.png Location type Set this to "Antenna height, distance, polararization and angle"
ScreenElementDescription.png Max Height The maximum height for the antenna tower, configuration is depending on how many positions should be measured
ScreenElementDescription.png Min Height The minimal height for the antenna tower, configuration is depending on how many positions should be measured
ScreenElementDescription.png Steps The number of height positions to measure, configuration is depending on how many positions should be measured
ScreenElementDescription.png Move during measurement If the antenna tower can move during the measurement, not used during MIL-STD RE102 measurement
ScreenElementDescription.png Optimize Height Find the optimal emission around a certain height, not used during MIL-STD RE102 measurement
ScreenElementDescription.png Distance The used antenna distance, 1 Meter for MIL-STD RE102
ScreenElementDescription.png Antenna Polarization Which polarization is used, Vertical, Horizontal or Both, above 30 MHz both polarization should be tested
ScreenElementDescription.png Start Angle The minimal turn table angle
ScreenElementDescription.png End Angle The maximum turn table angle
ScreenElementDescription.png Steps The number of angles to measure
ScreenElementDescription.png Turn during measurement If the turn table can move during the measurement, not applicable for MIL-STD RE102
ScreenElementDescription.png Optimize Angle Find the optimal emission around a certain angle, not applicable for MIL-STD RE102
ScreenElementDescription.png EUT Angle Offset The offset of the EUT on the table, not applicable for MIL-STD RE102
ScreenElementDescription.png Limit Lines The applicable limit line can be added, in this case "MIL-STD-461G RE102 Ground Applications, Navy Mobile & Army"
ScreenElementDescription.png All peaks above x dB below the limit line Which level above x dB below the limit line should detect peaks, no peaks should be measured in MIL-STD RE102
ScreenElementDescription.png Peak detection How many peaks should be detected automatically, no peaks should be measured for MIL-STD RE102
ScreenElementDescription.png Final peak measurement It is possible to perform a final measurement on a peak with a specific detector, 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

Once the test is finished, the results of this test is stored in the EUT file, and available as one of the performed Tests in the EUT file. Selecting the corresponding test result and pressing on Info will show the test results again.

RE102 Test Result.png

Conclusion

The MIL-STD RE102 test has to use multiple antennas and depending on the frequency band, different settings are configured. All these settings can be easily configured in a "Test Setup File" and tested with RadiMation®.

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