Transient Immunity

5.jpgPulse 1 - A simulation of transients due to supply disconnection from inductive loads; it applies to a DUT if as used in the vehicle, it remains connected directly in parallel with an inductive load

6.jpgPulse 2a - Simulates transients due to sudden  interruption of currents in a device connected in parallel with the DUT due to the inductances of the wiring harness

7.jpgPulse 2b - Simulates transients from dc  motors acting as generators after the ignition is switched off

8.jpgPulse 3a/3b - Occurs as the result of switching processes. The characteristics of this pulse are influenced by distributed capacitance and inductance of the wiring harness

9.jpgPulse 4 - The voltage reduction caused by energizing the starter motor circuits of the internal combustion 

10.jpgPulse 4 Variants – Most manufacturer variations of pulse four are generally much more complicated.  For example Ford requires up to four arbitrary generators with four outputs to be perfectly synchronized

11.jpgPulse 5 – Simulation of a load dump transient occurring in the event of a discharged battery being disconnected while the alternator is generating charging current with other loads  remaining on the alternator circuit at this moment

12.jpgMagnetic Field Immunity – Simulates magnetic fields generated by electric motors, daytime running lamps, etc. for DUTs with magnetically sensitive devices.

13.jpgTransformer Coupled Sine Waves – Sinusoidal noise burst coupled on battery lines



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