Immunity tests a product’s ability to function when in close proximity to electromagnetic fields. There are two main types of signals used to test a product’s immunity:
Modulated waves – Often AM modulated waves across the frequency ranges of interest. These waves test the product’s ability to ignore power at frequencies that may be coupled into the device over time. These signals may effect a product’s communication, reliability, or logic.
Pulsed and Burst waves – These transients affect a device immediately and can cause a number of power and functional issues. Electrostatic discharge or ESD testing is a common type of transient immunity testing. These fast pulses can have different effects on a product and need to be considered as a potential source of reliability and functional issues.
In addition to RIGOL’s other Pre-Compliance instrumentation, immunity testing requires an RF source to generate high power modulated waves. Other types of equipment may need to be purchased for transient generation.