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- EU RED Network Security Standard EN 18031
- Wireless and communication detection
- Mobile communication product certification
- Bluetooth BQB Product Certification
- FM/AM Product Certification
- WiFi Product Certification
- Wireless charging product certification
- Interphone product certification
- Base station certification
- SAR testing
- Receiver Product Certification
- 5G NR Product Certification
- UWB Product Certification
- Internet of Things authentication
- Electrical performance testing
- EMS testing - radiation anti-interference testing system (including radar waves)
- EMS Testing - Electrostatic Discharge
- EMS Test - Transient Conducted Immunity Test
- EMS Testing - Portable Transmitter Immunity
- EMS Test - High Current Injection (BCI) Test
- EMS test - low-frequency magnetic field anti-interference test
- EMI Testing - Transient Conducted Emissions Testing System
- EMI testing - low-frequency magnetic field emission
- EMI Test - Radiation Emission Test
- EMI Test - Conducted Emissions Test
- Automotive Electronic Testing
- Automotive ELV&VOC
- Reliability testing
- Temperature shock test
- Vibration testing
- Temperature shock/cold and hot shock test
- Instrument panel/instrument panel three comprehensive vibration test
- Comprehensive vibration test of door inner panel III
- Sunvisor Three Comprehensive Vibration Test
- Spoiler Three Comprehensive Vibration Test
- Three comprehensive vibration tests of car front and rear bumpers
- Three comprehensive vibration tests for lamp housing/lampshade
- Comprehensive vibration test of outer circumference three
- Automotive metal material testing
- Performance testing of automotive lighting fixtures
- Rapid temperature change test
- Vibration
- Common issues with vibration testing
- Common issues with fatigue testing
- Common issues with high and low temperature testing
- Conducted Interference (CE) - Suzhou Lixun Standard
- Conducted Immunity Test (CS) - Suzhou LCS Standard
- Electromagnetic Radiation Tolerance Test (RS) - Suzhou LCS Standard
- Electrical Fast Pulse Withstand Test (EFT) - Suzhou LCS Standard
- Voltage flicker test - Suzhou LCS standard
- Introduction to PFAS Testing
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Conducted Immunity Test (CS) - Suzhou LCS Standard
Conducted Anti-Disturbance Test (CS)
Overview of conducted disturbance immunity
This standard mainly introduces the test method of the international standard IEC61000-4-6:2006, corresponding to the national standard GB/T17626.6:1998 "electromagnetic compatibility test and measurement technology conduction disturbance immunity induced by radio frequency field".
Conducted disturbance immunity test purpose and application
The main source of disturbance covered by this standard is the electromagnetic field generated by RF transmitters in the frequency range of 9kHz to 80MHz. The electromagnetic field will act on the electrical and electronic equipment power lines, communication lines and interface cables and other connection lines, the length of these connection leads may be comparable to several wavelengths of the interference frequency, therefore, these leads become passive antennas, receiving the induction of the external electromagnetic field, the lead cable can be coupled to the inside of the equipment by conduction (and finally the near-field electromagnetic disturbance formed by radio frequency voltage and current to the inside of the equipment) to interfere with the equipment. Thus affecting the normal operation of the equipment. Therefore, the purpose of this standard is mainly to establish a public reference for evaluating the conducted disturbance immunity performance induced by RF fields, and to provide a basic reference for professional technical committees or users and manufacturers of relevant products.
A common term for conducted disturbance immunity
(1) Artificial hands
An electrical network that simulates the human impedance between a handheld electrical device and ground under normal operating conditions
(2) Auxiliary equipment
Equipment that provides the signal required for the normal operation of the device under test and equipment that verifies the performance of the device under test.
(3) Inject forceps
u Current clamp
A current converter realized by a secondary winding consisting of a cable to be injected into the signal.
u Electromagnetic pliers
An injection device that combines capacitive and inductive coupling.
(4) Common-mode impedance
The ratio of common-mode voltage to common-mode current on a port.
(5) Coupling coefficient
The ratio of the open-circuit voltage (electromotive force) obtained at the device port under test of the coupling device to the open-circuit voltage at the output of the signal generator
(6) Coupled network
A circuit that transmits energy from one circuit to another at a specified impedance.
(7) Decoupling networks
Circuits that prevent the measurement signal applied to the device under test from affecting other devices, devices, or systems that are not being measured.
(8) Voltage standing wave ratio
The ratio of the maximum voltage along the line to the adjacent minimum voltage amplitude.
Conducted disturbance immunity test level
u In the 9kHz-150kHz frequency range, no measurement is required for induced disturbances caused by electromagnetic fields from RF transmitters.
u In the frequency range of 150kHz-80kHz, the immunity test for induced disturbance caused by electromagnetic fields from RF transmitters should be selected according to the electromagnetic environment in which the equipment and cable are finally installed, according to the corresponding test level according to the following table.
Frequency range 150kHz-80MHz
Test level
| Frequency range 150kHz~80MHz | ||
| Test level | Voltage (RMS) | |
| U0,dBμV | U0,V | |
| 1 2 3 X | 120 130 140 | 1 3 10 |
| specific | ||
| 1) X is an open level | ||
Ø Class 1: Low-level radiation environment. Typical levels for radio/television stations located at distances greater than 1km and typical levels for low-power transmitter receivers.
Ø Class 2: Moderate electromagnetic radiation environment. Use in low-power portable transmitter receivers adjacent to equipment (typical rating less than 1W). Typical business environment.
Ø Class 3: Harsh electromagnetic emission environment. Used in portable transmitter receivers (≥1W) that are relatively close to the device, but less than 2m away. High-power broadcast transmitters used close to equipment and possibly close to industrial, scientific, and medical equipment. Typical industrial environment.
Ø × category: × is the level of openness specified by negotiation or product specifications and product standards.
u For equipment with a total size of less than 0.4m and no conduction cables (such as power lines, signal wires or ground wires), the standard stipulates that this test is not required. For example, a battery-powered device does not need to do this experiment when it is not connected to the earth or any other device and is not being used while charging, but it must be used during charging.
u The frequency range specified in the standard is 150kHz-80MHz, but the frequency range of the actual test can be determined according to the analysis of the situation of the test equipment, and when the size of the test equipment is relatively small, the test frequency can be extended to 230MHz.
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