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| − | The [[EN 61000-4-3]] standard describes how Radiated Immunity tests should be performed. In this standard it is also described how the calculation of a [[Uniform Field Area]] should be performed. In the 2006 version of the EN 61000-4-3 standard, it is also described that it should be ensured that the amplifier is used in a range in which it is not in saturation.
| + | #REDIRECT [[FAQ#Does RadiMation support the linearity check that is described in the EN 61000-4-3 standard?]] |
| − | Does {{RadiMation}} support the linearity check as it is described in the EN 61000-4-3, 2006 version? | |
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| − | The EN 61000-4-3 specifies that the calibrations in the Uniform Field Area should be performed on electrical field strength that is at least 1.8 times higher than the field strength that will be used during the substitution test.
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| − | To be able to perform substitution tests on 10 V/m, it is thus necessary that the calibrations are performed on 18 V/m.
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| − | The [[Uniform Field Area]] calculation can be performed as it is described in [[Chapter 12]]. After the the complete calculation has been performed, and a final calibration file has been created, it has to be ensured that the amplifier will not be used in saturation.
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| − | The easiest way to confirm that the amplifier is not used in saturation, is:
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| − | # Configure a Radiated Immunity substitution test with the calibration file that was the result of the [[Uniform Field Area]] calculation. Ensure that the substitution test is configured with the correct settings:
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| − | #* use the signal generator calibration method.
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| − | #* level to an electrical field strength that is 1.8 times lower than the field strength that was calibrated. This will result in a 5.1 dB lower signal generator power.
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| − | #* use the same frequency range and frequency steps, as was used during the calibration.
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| − | # Start the substitution test and wait until it is finished.
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| − | # Now the forward power that is used during the substitution test, and the forward power during the calibration should be compared. It is the most easiest to do this in [[Microsoft Excel]]. Start Microsoft Excel, and create an empty sheet.
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| − | # Open the calibration file that was the result of the [[Uniform Field Area]] calculation.
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| − | # Open the forward power graph, and copy the data of the forward power to the clipboard.
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| − | # Paste the forward power of the calibration file into the Microsoft Excel worksheet (for example on cell A1)
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| − | # Open the results of the substitution test, open the forward power graph, and copy the data of the forward power to the clipboard.
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| − | # Paste the forward power of the substitution test into the Microsoft Excel worksheet (for example on cell E1)
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| − | # Compare the data of the forward power of the calibration and the forward power during the substitution. The forward power of the substitution should be 5.1 dB lower then the forward power of the calibration file. The comparison is very easy, by inserting the formula '=B2-E2' in cell I2. The formula can then be copied down for all other frequencies.
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| − | # The [[EN 61000-4-3]] standard assumes that the amplifier is not in saturation if the difference between the forward power values is within +3.1 dB to +5.1 dB.
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| − | Another possibility to ensure that the amplifier is not used in saturation, is to limit the generated power of the amplifier to the 1 dB compression point. The [[amplifier limitation]] feature of {{RadiMation}} can be used to limit the generated power of the amplifier.
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| − | [[Category:RadiMation]]
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| − | [[Category:RadiMation FAQ]]
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