Magnetic
SPEA magnetic test units perform the high-throughput final test of linear magnetic sensors, angular sensors, speed sensors, based on hall-effect, AMR, or different technologies. Each module integrates all the elements required for both the electrical and functional tests of the devices, including the equipment for the verification of the magnetic sensor working, and the thermal conditioning for tri-temp test, compliant to the automotive requirements.
Functional tests include frequency, duty cycle, rotation direction, magnetic field intensity, sensitivity, sensor calibration, and are performed in addition to the standard electrical test (open/short, leakage measurements, etc.).
The test sequence is performed guaranteeing high precision and stability, keeping low the cost of test by running in parallel on up to 49 devices.
The test units can generate 1D, 2D or 3D magnetic fields according to totally arbitrary waveforms, with frequencies up to 2KHz, as needed by the specific application. Bidimensional, very high-strength magnetic fields can be generated to stimulate sensors that need tens of kiloamperes/meter to be properly tested.
Uniform magnetic fields can be static or rotating, and can be applied in all directions (360° rotation angle), with the possibility to accurately change their position so as to simulate different working conditions (including the “zero-field” case).
Specific test integrations are based on the most suitable technology: magnetic PCBs, socket coils, or permanent magnets can be used as field sources. The best solution will be applied to each device type according to the specific requirements