RadiMation Application Note 165

How to perform an IEC 61000-4-6, Conducted immunity test

This application note explains how the IEC 61000-4-6 conducted immunity test can be performed with RadiMation^®. The IEC 61000-4-6 conducted immunity test method is used for electrical and electronic equipment that may be subjected to radio-frequency disturbances conducted along cables coming from radio transmitters in the frequency range from 150 kHz up to 80 MHz. The exact requirements, calibration and EUT test methods are described in the IEC 61000-4-6 standard.

Necessary equipment

• Signal generator
• Amplifier
• Coupler
• Forward power meter
• Injection device
• Calibration jig
• Attenuator (optional)
• Sensor power meter

Calibration procedure

The calibration is performed to determine the power required to match the corresponding voltage test level seen at the output of the injection device.

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
	Coupler	Devices 1	Coupler
	Forward power meter	Devices 1	Forward power meter
	Injection device	Devices 2	The injection clamp or CDN
	Calibration Jig	Devices 2	The calibration jig to use
	Sensor power meter	Devices 2	Power meter
Cables
①	Cable current -> power meter	Cables	Cable with the specified loss of the used attenuator

Configure the calibration

The calibration can be configured and started from the menu by selecting:

    Calibration

       System calibration

          Conducted immunity

Start

The start frequency of the calibration. For example 150 kHz.

End	The stop frequency of the calibration. For example 80 MHz.

Step	The frequency step, in this case 1%.

Test level

The test level, in this case Voltage.

Voltage

The voltage test level, 1 V, 3 V or 10 V.

Tolerance

The regulation tolerance.

Calibration method

The power measurement that should be the result of the calibration: Forward power

Test equipment

Calibration test equipment.

Test engineer

The engineer that performed the calibration.

When the calibration has finished, RadiMation^® will ask to store the calibration file.

EUT Test

EUT testing equipment

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
	Coupler	Devices 1	The coupler to use
	Forward power meter	Devices 1	The forward power meter to use
	Injection device	Devices 2	The injection clamp or CDN to use

Configure the EUT test

To perform the actual test on the EUT, create a conducted immunity multiband test. The conducted immunity multiband test configuration, can be opened by selecting from the menu:

    Tests

       Conducted Immunity

          Multiband

Start

The start frequency of the test. For example 150 kHz.

End	The stop frequency of the test. For example 80 MHz.

Frequency Step

The frequency step, 1%.

Dwell Time

The dwell time.

Frequency Change Mode

The method that is used to change from one to the next frequency: Constant.

Modulation

Configure Amplitude Modulation with 1 kHz and 80 % duty cycle.

Test equipment

The equipment needed for the conducted immunity test.

Location Type

Injection clamp.

Test Level

Specify the Voltage substition method

Inputs

No inputs are needed, this is optional.

To configure the modulation settings click Config next to the modulation settings, click the AM tab, and enter the amplitude modulation settings.

Activate modulation

Check this checkbox to enable the amplitude modulation.

Frequency

The AM frequency 1 kHz.

Duty Cycle

A depth of 80 %.

Also apply modulation out of the dwell-time period

No need to apply modulation out of the dwell-time period.

At TestLevel click Add to add a new Test level and select TestLevel - Voltage substitution method

Description

The description of the test level.

Calibration file

Select the calibration file to use for this band.

Test level

Variable current, and specify the correction file for the applicable test level.

Calibration method

Select Forward Power.

Tolerance

Specify the tolerance to use.

Institute of Electrical and Electronics Engineers

The ability of an EUT to be immune to incoming electromagnetic interference. This is equivalent to the term susceptibility that is used by some standards.

Equipment Under Test

Coupling Decoupling Network

The ability of an EUT to be immune to incoming electromagnetic interference. This is equivalent to the term susceptibility that is used by some standards.