ISO 7637-2 Automotive Transient Immunity Generator

The EMS-ISO7637 Automotive Transient Immunity Generator is an integrated solution developed by LISUN specifically for electromagnetic compatibility (EMC) immunity testing of automotive electronic components. Its core function is to simulate transient conducted interference commonly found in automotive power supply systems, providing standardized test conditions for evaluating the operational stability of onboard electronic devices (such as ECUs, sensors, and charging stations) in complex electromagnetic environments. The system integrates multi-module waveform generators, artificial networks, and coupling/decoupling components, accurately reproducing transient pulses specified in the ISO 7637 standard. It covers mainstream automotive voltage systems of 12V/24V/48V and is suitable for the electronic testing needs of passenger cars, commercial vehicles, and new energy vehicles.

The EMS-ISO7637 Automotive Transient Immunity Generator adopts a 4U integrated chassis design (net weight not exceeding 15kg) and integrates pulse 1, 2a, -2a, 3a, 3b, 5a, and 5b waveforms (with Volkswagen/General Motors waveforms 6 and 7 being customizable). It features a 10.1-inch Chinese/English Android capacitive touchscreen display, supports custom test procedures, and has built-in standard test templates that can be called with one click. It is also compatible with PC-based host computer software, supporting Win7, Win8, Win10, and Win11 operating systems, enabling automatic recording of test data, curve plotting, and report export, meeting the needs of the entire process from R&D verification to mass production quality inspection.

Standards:

Specifications:

Optional Recommendation 1: To meet the requirements of ISO 7637-2 Clause 4.3 Appendix B and GB/T 21437.2-2021 Clause 4.3 Appendix B, it is recommended to select the LISUN TES-50A Automotive Transient Emission Test System.

Optional Recommendation 2: To meet ISO 7637-3 and GB/T 21437.3, it is recommended to select the following LISUN ISO 7637-3 Capacitive & Inductive Coupling Transient Immunity Test Devices (for non-Power Lines). 

Note:
1. Click on the following EMS-ISO7637 CNAS calibration certificate and TES-50A CNAS calibration certificate to learn more about the relevant specifications of EMS-ISO7637;
2. Optional LISUN instruments are available for Automotive electronic and electrical performance testing, fully complying with ISO 16750-2:2023 and car manufacturer standards including VW 80000 and GM 3172. For detailed system configurations, please refer to the product page: “ISO 16750-2:2023 Automotive Electrical Disturbances | Automotive Electronic Performance Test System“

Applications:
• R&D Testing for Automotive Electronic Components: For on-board components such as ECUs (Engine Control Units), in-vehicle displays, and radar sensors, it simulates transient pulses on power lines as specified in ISO 7637-2 (e.g., P1 power-off pulses, P2a load dump pulses). This verifies the functional stability of components under voltage fluctuations, supporting the optimization of circuit immunity design during the R&D phase.

• New Energy Vehicle (NEV) Electronic Testing: For NEV on-board chargers (OBCs), DC-DC converters, and battery management systems (BMS), it conducts capacitive/inductive coupling immunity testing in accordance with ISO 7637-3 and GB/T 21437.3 standards. This ensures the safe operation of high-voltage systems in complex electromagnetic environments.

• Mass-Production Quality Inspection for Automotive Electronics: On production lines of automotive electronic components (e.g., sensors, connectors), it uses the system’s preset automated test procedures to quickly detect whether products meet immunity performance standards. This screens out non-conforming products and ensures consistent quality in mass production.

• Certification Testing by Third-Party Labs: It provides automotive electronics enterprises with immunity testing services compliant with ISO, IEC, and SAE standards, and issues authoritative test reports. These reports support products in passing supply chain access certifications from international automakers (e.g., Volkswagen, Toyota, BMW).

• Military Vehicle Electronic Testing: In accordance with the MIL-STD-461G standard, it conducts immunity testing on electronic communication equipment of military off-road vehicles and armored vehicles. This ensures the operational reliability of equipment in harsh electromagnetic environments, meeting the needs of the national defense and military industry.

• Verification of Automotive Electronic Components: For basic automotive components such as resistors, capacitors, and chips, it simulates transient interference from on-board power supplies to evaluate the components’ anti-aging and anti-failure capabilities. This provides data support for vehicle manufacturers to select high-reliability component suppliers.

Multifunctional Immunity Test System For Automotive Electronics - Introduction Video

Multifunctional Immunity Test System For Automotive Electronics - Operation Video