Introduction：
EM Electromagnetic clamp test method is one of the test methods in the conducted immunity test system proposed by the international standard IEC61000-4-6 and GB/T 17262.6, which aims to use electromagnetic clamp to couple the high-frequency signals to the interconnecting cables of the EUTs, and then observe whether the EUT's working status is affected.
EUTTEST provides standards-compliant EM clamp conducted immunity test systems. The following test configuration diagram explains how to use EM clamps to build an EMC-CS test system.
start testing
Diagram of the calibration configuration for the electromagnetic clamp test method:
The electromagnetic clamp method requires calibration before testing can begin, and EUTTEST provides the following list of test equipment that needs to be used for test channel calibration:
- NSG 4070C1 More Conducted Immunity Generators Available
- 150Ω/50Ω Adapter
- 6dB Attenuator
- 50Ω Load
- RF cable
- EM electromagnetic clamp KEMZ 801B
After contacting EUTTEST to purchase the above equipment, connect the NSG4070 output to the input port of the electromagnetic clamp KEMZ 801B according to the following diagram, and record the displayed value of the NSG4070 to confirm the forward power output level Vout.
Calibrating the Input Level Vout of an Electromagnetic Clamp Using the NSG4070
Repeat each test frequency at 150kHz-230MHz as required by IEC61000-4-6 and record the Vout value at each frequency point.
Diagram of the test configuration for the electromagnetic clamp test method:
The equipment used for the electromagnetic clamp test method is the same as that used for calibration, and no additional equipment needs to be purchased.
After completing the above calibration process, we get the output level Vout of the NSG4070, now use the configuration in the figure below to connect the DUT and the AE auxiliary equipment and inject the Vout at different frequency points into the inside of the electromagnetic clamp, at this point we need to observe and record the operating status of the EUT, and then record each Vout value and the operating status of the EUT in the test report.
Injection of the Vout signal into the interconnection cable using the NSG4070 and the electromagnetic clamp KEMZ 801B
Test Summary:
The above is the IEC61000-4-6 conducted immunity test system electromagnetic clamp test method provided by EUTTEST, EMC testers only need to follow the above configuration to complete the standard requirements of RF field induction conducted immunity test needs, if you have any questions about the above test program, please contact EUTEST to purchase the above equipment and build the test system according to the above section after Contact our after-sales personnel for advice.
The GB/T 17626.6-2017 version adds the requirement for decoupling pliers, please check the products below for more information.
