RadiMation Application Note 164: Difference between revisions
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Line 11: | Line 11: | ||
* Signal generator | * Signal generator | ||
* Amplifier | * Amplifier | ||
* Oscilloscope or measurement receiver | * Oscilloscope or measurement receiver | ||
* 0.5 Ω resistor | * 0.5 Ω resistor | ||
* Coupling transformer | |||
== Define the calibration test level == | == Define the calibration test level == | ||
Line 22: | Line 21: | ||
To calculate the corresponding voltages based on the power levels the following formula can be used:</br> | To calculate the corresponding voltages based on the power levels the following formula can be used:</br> | ||
<math> | <math> | ||
\text{ | \text{Voltage [dBµV]} = 20 \cdot \log_{10}\left(\frac{\sqrt{P \cdot R}}{1 \times 10^{-6}}\right) | ||
</math> | </math> | ||
This | This results in the following voltages: | ||
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
! Frequency !! Voltage | ! Frequency !! Power !! Voltage | ||
|- | |- | ||
| 30 Hz || 136 dBµV | | 30 Hz || 80 Watts ||136 dBµV | ||
|- | |- | ||
| 5 kHz || 136 dBµV | | 5 kHz || 80 Watts || 136 dBµV | ||
|- | |- | ||
| 150 kHz || 106.5 dBµV | | 150 kHz || 0.09 Watts || 106.5 dBµV | ||
|} | |} | ||
A new correction file for the calibration test level can be created by selecting the menu: | |||
{{Menu|File|New|Correction}} | {{Menu|File|New|Correction}} | ||
[[File:CS101_Calibration_level.png]] | [[File:CS101_Calibration_level.png]] | ||
Make sure to add the Vrms column with {{ScreenElement|Columns/Units}} and remove the {{ScreenElement|Correction column}}. In addition change the {{ScreenElement|Unit}} to dBµV. | {{Note|Make sure to add the Vrms column with {{ScreenElement|Columns/Units}} and remove the {{ScreenElement|Correction column}}. In addition change the {{ScreenElement|Unit}} to dBµV.}} | ||
Store the correction file for the power limit by selecting the menu: | |||
{{Menu|File|Save correction}} | {{Menu|File|Save correction}} | ||
Then specify a descriptive name for the test level correction file on disk, for example: 'CS101-2 power limit.cor'. | |||
== Calibration procedure == | == Calibration procedure == | ||
The calibration is performed to determine the signal source required for the corresponding power level | The calibration is performed to determine the signal source required for the corresponding power level through the 0.5 Ω resistor, which will be used during EUT testing as limit. | ||
=== Calibration equipment === | === Calibration equipment === | ||
[[File: | [[File:CS101_Calibration_setup.png]] | ||
The configuration of the calibration test site should contain the following devices: | The configuration of the calibration test site should contain the following devices: | ||
Line 62: | Line 62: | ||
| || Amplifier || Devices 1 || The amplifier to use | | || Amplifier || Devices 1 || The amplifier to use | ||
|- | |- | ||
| || | | || Oscilloscope || Devices 1 || Oscilloscope | ||
|- | |- | ||
| || | | || Sensor power meter || Devices 2 || measurement receiver as power meter (in case no oscilloscope is used) | ||
|- | |||
| || Injection device || Devices 2 || The coupling transformer to use | |||
|} | |} | ||
=== Configure the calibration === | === Configure the calibration === | ||
The configuration of the calibration can be created by selecting the menu: | |||
{{Menu|Calibration|System calibration|Conducted susceptibility}} | |||
{{Menu|Calibration|System calibration|Conducted | |||
[[File: | [[File:CS101_Calibration_configuration.png]] | ||
{{ScreenElementDescriptionStart}} | {{ScreenElementDescriptionStart}} | ||
{{ScreenElementDescription|Start|The start frequency of the calibration | {{ScreenElementDescription|Start|The start frequency of the calibration: 30 Hz.}} | ||
{{ScreenElementDescription|End|The stop frequency of the calibration | {{ScreenElementDescription|End|The stop frequency of the calibration: 150 kHz.}} | ||
{{ScreenElementDescription|Step|The frequency step, | {{ScreenElementDescription|Step|The frequency step, for example: 5 %.}} | ||
{{ScreenElementDescription|Test level|The test level, in this case {{ScreenElement| | {{ScreenElementDescription|Test level|The test level, in this case {{ScreenElement|Voltage}}.}} | ||
{{ScreenElementDescription|Variable|The variable test level, select the correction file created | {{ScreenElementDescription|Variable|The variable test level, select the correction file created before 'CS101-2 power limit.cor'.}} | ||
{{ScreenElementDescription|Calibration method|The power measurement that should be the result of the calibration: {{ScreenElement|Signal generator level}}}} | |||
{{ScreenElementDescription|Tolerance|The regulation tolerance.}} | {{ScreenElementDescription|Tolerance|The regulation tolerance.}} | ||
{{ScreenElementDescription| | {{ScreenElementDescription|Voltage measuring device|The device that will be used to measure the voltage. In this example: {{ScreenElement|Oscilloscope}}.}} | ||
{{ScreenElementDescription|Test equipment|Calibration test equipment.}} | {{ScreenElementDescription|Test equipment|Calibration test equipment.}} | ||
{{ScreenElementDescription|Test engineer|The engineer that performed the calibration.}} | {{ScreenElementDescription|Test engineer|The engineer that performed the calibration.}} | ||
Line 99: | Line 88: | ||
=== Calibration result === | === Calibration result === | ||
When the calibration is | When the calibration is finished, the engineer is asked to save the results of that calibration to a calibration (.CAL) file. It is possible to give the .CAL file a clear and distinct name. | ||
== EUT Testing == | == EUT Testing == | ||
=== EUT Testing equipment === | === EUT Testing equipment === | ||
[[File: | [[File:CS101_EUT_test_setup.png]] | ||
The configuration of the eut test site should contain the following devices: | The configuration of the eut test site should contain the following devices: | ||
Line 197: | Line 103: | ||
| || Amplifier || Devices 1 || The amplifier to use | | || Amplifier || Devices 1 || The amplifier to use | ||
|- | |- | ||
| || | | || Oscilloscope || Devices 1 || The oscilloscope to measure the voltage | ||
|- | |- | ||
| || Sensor powermeter || Devices 2 || When a measurement receiver is used to measure voltage | |||
| || Sensor powermeter || Devices 2 || | |||
|} | |} | ||
=== Configure the EUT test === | === Configure the EUT test === | ||
To perform the actual test on the EUT, create a conducted immunity multiband test | To perform the actual test on the EUT, create a conducted immunity multiband test. | ||
The conducted immunity multiband test | The conducted immunity multiband test configuration is created by selecting the menu: | ||
{{Menu|Tests|Conducted Immunity|Multiband}} | {{Menu|Tests|Conducted Immunity|Multiband}} | ||
[[File:CS101 EUT Test Configuration.png]] | |||
[[File: | |||
{{ScreenElementDescriptionStart}} | {{ScreenElementDescriptionStart}} | ||
{{ScreenElementDescription|Start|The start frequency of the test | {{ScreenElementDescription|Start|The start frequency of the test: 30 Hz.}} | ||
{{ScreenElementDescription|End|The stop frequency of the test | {{ScreenElementDescription|End|The stop frequency of the test: 150 kHz.}} | ||
{{ScreenElementDescription|Frequency Step|The frequency step, see Table III.}} | {{ScreenElementDescription|Frequency Step|The frequency step, see Table III of the [[MIL-STD-461]].}} | ||
{{ScreenElementDescription|Dwell Time|The dwell time specified see TABLE II of the [[MIL-STD-461]].}} | {{ScreenElementDescription|Dwell Time|The dwell time specified see TABLE II of the [[MIL-STD-461]].}} | ||
{{ScreenElementDescription|Frequency Change Mode|The method that is used to change from one to the next frequency: {{ScreenElement|Constant}}.}} | {{ScreenElementDescription|Frequency Change Mode|The method that is used to change from one to the next frequency: {{ScreenElement|Constant}}.}} | ||
{{ScreenElementDescription|Modulation| | {{ScreenElementDescription|Modulation|Modulation is not required.}} | ||
{{ScreenElementDescription|Test equipment|The equipment needed for the conducted | {{ScreenElementDescription|Test equipment|The equipment needed for the conducted susceptibility test.}} | ||
{{ScreenElementDescription|Location Type|Injection clamp.}} | {{ScreenElementDescription|Location Type|Injection clamp.}} | ||
{{ScreenElementDescription|Test Level|Specify the {{ScreenElement|Current | {{ScreenElementDescription|Test Level|Specify the {{ScreenElement|Current voltage closed loop method}} test level and add a {{ScreenElement|Calibrated voltage limit}}}} | ||
{{ScreenElementDescription|Inputs|No inputs are needed.}} | {{ScreenElementDescription|Inputs|No inputs are needed.}} | ||
{{ScreenElementDescriptionEnd}} | {{ScreenElementDescriptionEnd}} | ||
{{Note|It is possible to change the voltage unit to dBµV instead of V, choose {{ScreenElement|Units}} and select Voltage and adjust the {{ScreenElement|Unit}} to dBµV.}} | |||
{{ | |||
At {{ScreenElement| | At {{ScreenElement|Test Level}} click {{ScreenElement|Add}} to add a new Test level and select {{ScreenElement|Test Level - Voltage closed loop method}} | ||
[[File: | [[File:CS101 Voltage Testlevel.png]] | ||
{{ScreenElementDescriptionStart}} | {{ScreenElementDescriptionStart}} | ||
{{ScreenElementDescription|Description|The description of the test level.}} | {{ScreenElementDescription|Description|The description of the test level.}} | ||
{{ScreenElementDescription| | {{ScreenElementDescription|Measuring device|Select the measuring device to use.}} | ||
{{ScreenElementDescription|Test level|Variable | {{ScreenElementDescription|Test level|{{ScreenElement|Variable voltage}}, and specify the correction file for the applicable test level, see CS101-1}} | ||
{{ScreenElementDescription|Tolerance|Specify the tolerance to use.}} | {{ScreenElementDescription|Tolerance|Specify the tolerance to use.}} | ||
{{ScreenElementDescriptionEnd}} | {{ScreenElementDescriptionEnd}} | ||
Next to the test level add a limit, At {{ScreenElement|TestLevel}} click {{ScreenElement|Add}} to add a new Limit and select {{ScreenElement|Limit - | Next to the test level add a limit, At {{ScreenElement|TestLevel}} click {{ScreenElement|Add}} to add a new Limit and select {{ScreenElement|Limit - Calculated voltage limit}} | ||
With this limit the level will not be regulated higher than the calculated voltage based on the calibration file. | |||
With this limit the level will not be regulated higher than the | |||
[[File: | [[File:CS101 Voltage limit.png]] | ||
{{ScreenElementDescriptionStart}} | {{ScreenElementDescriptionStart}} | ||
{{ScreenElementDescription|Description|The description of the limit}} | {{ScreenElementDescription|Description|The description of the limit.}} | ||
{{ScreenElementDescription| | {{ScreenElementDescription|Calibration file|The calibration file, that was created during the calibration.}} | ||
{{ScreenElementDescription|Variable voltage|The correction file for the power limit.}} | |||
{{ScreenElementDescription|Power method|{{ScreenElement|Signal Gen. Level (Pin)}}.}} | |||
{{ScreenElementDescriptionEnd}} | {{ScreenElementDescriptionEnd}} | ||
When all | When all settings are configured press {{ScreenElement|Start Test}} to start the EUT test. | ||
=== EUT Test Result === | === EUT Test Result === | ||
Once the test is finished, the results of this test are 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. | Once the test is finished, the results of this test are 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: | [[File:CS101 EUT Test Result.png]] | ||
== Conclusion == | == Conclusion == | ||
The MIL-STD-461G | The MIL-STD-461G CS101 calibration can be performed by using the Conducted susceptibility calibration. | ||
The {{RadiMation}} Conducted immunity multiband test can then be used to perform the MIL-STD-461G | The {{RadiMation}} Conducted immunity multiband test can then be used to perform the MIL-STD-461G CS101 EUT test with a voltage closed loop test level to regulate and a calculated voltage limit with a calibration file to limit on power during the EUT test. | ||
[[Category:RadiMation Application Note]] | [[Category:RadiMation Application Note]] |
Latest revision as of 16:19, 26 February 2025
How to perform a MIL-STD-461 CS101, Conducted susceptibility, power leads[edit]
This application note explains how the MIL-STD-461 CS101, Conducted susceptibility, power leads test can be performed with RadiMation®
MIL-STD-461 CS101 is a test method used in military and aerospace environments to assess the conducted susceptibility of equipment to low-frequency interference, 30 Hz - 150 kHz, ensuring it operates reliably in the presence of conducted disturbances.
The exact requirements and test methods for the CS101 are specified in the MIL-STD-461.
Necessary equipment[edit]
The following devices are necessary to run the calibration and EUT test:
- Signal generator
- Amplifier
- Oscilloscope or measurement receiver
- 0.5 Ω resistor
- Coupling transformer
Define the calibration test level[edit]
The CS101 EUT test is limited by the power levels specified in CS101-2, applied through a 0.5 Ω resistor.
During the calibration RadiMation® is levelling on a voltage and the corresponding signal source is recorded which is used during EUT testing to limit on.
To calculate the corresponding voltages based on the power levels the following formula can be used:
This results in the following voltages:
Frequency | Power | Voltage |
---|---|---|
30 Hz | 80 Watts | 136 dBµV |
5 kHz | 80 Watts | 136 dBµV |
150 kHz | 0.09 Watts | 106.5 dBµV |
A new correction file for the calibration test level can be created by selecting the menu:
-
File
-
New
-
Correction
-
-
-
![]() |
Note: | Make sure to add the Vrms column with Columns/Units and remove the Correction column. In addition change the Unit to dBµV. |
Store the correction file for the power limit by selecting the menu:
-
File
-
Save correction
-
-
Then specify a descriptive name for the test level correction file on disk, for example: 'CS101-2 power limit.cor'.
Calibration procedure[edit]
The calibration is performed to determine the signal source required for the corresponding power level through the 0.5 Ω resistor, which will be used during EUT testing as limit.
Calibration equipment[edit]
The configuration of the calibration test site should contain the following devices:
# | Device name | Tab in testsite configuration window | note |
---|---|---|---|
Signal Generator | Devices 1 | The signal generator to use | |
Amplifier | Devices 1 | The amplifier to use | |
Oscilloscope | Devices 1 | Oscilloscope | |
Sensor power meter | Devices 2 | measurement receiver as power meter (in case no oscilloscope is used) | |
Injection device | Devices 2 | The coupling transformer to use |
Configure the calibration[edit]
The configuration of the calibration can be created by selecting the menu:
-
Calibration
-
System calibration
-
Conducted susceptibility
-
-
-
![]() |
The start frequency of the calibration: 30 Hz. |
![]() |
The stop frequency of the calibration: 150 kHz. |
![]() |
The frequency step, for example: 5 %. |
![]() |
The test level, in this case Voltage. |
![]() |
The variable test level, select the correction file created before 'CS101-2 power limit.cor'. |
![]() |
The power measurement that should be the result of the calibration: Signal generator level |
![]() |
The regulation tolerance. |
![]() |
The device that will be used to measure the voltage. In this example: Oscilloscope. |
![]() |
Calibration test equipment. |
![]() |
The engineer that performed the calibration. |
Calibration result[edit]
When the calibration is finished, the engineer is asked to save the results of that calibration to a calibration (.CAL) file. It is possible to give the .CAL file a clear and distinct name.
EUT Testing[edit]
EUT Testing equipment[edit]
The configuration of the eut test site should contain the following devices:
# | Device name | Tab in testsite configuration window | note |
---|---|---|---|
Signal Generator | Devices 1 | The signal generator to use | |
Amplifier | Devices 1 | The amplifier to use | |
Oscilloscope | Devices 1 | The oscilloscope to measure the voltage | |
Sensor powermeter | Devices 2 | When a measurement receiver is used to measure voltage |
Configure the EUT test[edit]
To perform the actual test on the EUT, create a conducted immunity multiband test. The conducted immunity multiband test configuration is created by selecting the menu:
-
Tests
-
Conducted Immunity
-
Multiband
-
-
-
![]() |
The start frequency of the test: 30 Hz. |
![]() |
The stop frequency of the test: 150 kHz. |
![]() |
The frequency step, see Table III of the MIL-STD-461. |
![]() |
The dwell time specified see TABLE II of the MIL-STD-461. |
![]() |
The method that is used to change from one to the next frequency: Constant. |
![]() |
Modulation is not required. |
![]() |
The equipment needed for the conducted susceptibility test. |
![]() |
Injection clamp. |
![]() |
Specify the Current voltage closed loop method test level and add a Calibrated voltage limit |
![]() |
No inputs are needed. |
![]() |
Note: | It is possible to change the voltage unit to dBµV instead of V, choose Units and select Voltage and adjust the Unit to dBµV. |
At Test Level click Add to add a new Test level and select Test Level - Voltage closed loop method
![]() |
The description of the test level. |
![]() |
Select the measuring device to use. |
![]() |
Variable voltage, and specify the correction file for the applicable test level, see CS101-1 |
![]() |
Specify the tolerance to use. |
Next to the test level add a limit, At TestLevel click Add to add a new Limit and select Limit - Calculated voltage limit
With this limit the level will not be regulated higher than the calculated voltage based on the calibration file.
![]() |
The description of the limit. |
![]() |
The calibration file, that was created during the calibration. |
![]() |
The correction file for the power limit. |
![]() |
Signal Gen. Level (Pin). |
When all settings are configured press Start Test to start the EUT test.
EUT Test Result[edit]
Once the test is finished, the results of this test are 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.
Conclusion[edit]
The MIL-STD-461G CS101 calibration can be performed by using the Conducted susceptibility calibration. The RadiMation® Conducted immunity multiband test can then be used to perform the MIL-STD-461G CS101 EUT test with a voltage closed loop test level to regulate and a calculated voltage limit with a calibration file to limit on power during the EUT test.