Automotive transient immunity generators test automotive components for their susceptibility to automotive EMI, surges or drops in current which may shut off or damage electrical components built into the car. The advancement of technology in the automotive industry has led to higher quality, more complex electrical systems integrated into cars, which rely on successful communication between sensors and control systems. New electrical components are new potential victims of automotive EMI, meaning the conducted immunity testing of cars is becoming a more and more complex process.
A transient test system simplifies the process of automotive EMC testing. Automotive transient immunity generators are specifically designed to produce waveforms that simulate real-world car troubles. Cranking the ignition is a source of surges which overload components like the stereo, turn signals, or even the battery and alternator. Another source is referred to as a load dump—the battery disconnects in the middle of being charged by the alternator and the car dies. A variety of immunity tests are conducted to reproduce these conditions.
Advanced Test Equipment Corporation offers calibration services for automotive transient generators.
Automotive Conducted Immunity Tests
- Electrical Fast Transient (EFT/Burst)
- Load Dump
- Micropulse (Surge)
- Power Fail Simulators
- Transient Emissions
- Voltage Drop Simulation
Test engineers look to the following international standards organization (ISO) and original equipment manufacturer (OEM) test standards for guidance in achieving automotive EMC compliance.
- ISO 7637-1 | General considerations for electrical disturbances from conduction & coupling
- ISO 7637-2 | Transient conduction along supply lines
- ISO 7637-3 | Transient conduction via capacitive/inductive coupling via non-supply lines
- ISO 16750-2 | Electrical load testing
- + Many more OEMs
|Other Essential Standards
- OEM LV 123
- OEM LV 148
- JASO D001-94
- SAE J1113