An electric field (E-field) probe is a long, spherical, probe-capped wand which detects unsafe levels of RF emissions and gives operators data on the electric field in an area. E-field probes are also used in anechoic chambers and OATS locations as well as other unique applications such as monitoring emissions of aerospace and military systems. The device generally consists of a dipole antenna, readout device, RF detector, and non-perturbing transmission line. They monitor voltage levels up to 1,000 V/m in frequencies as low as 5 kHz up to 60 GHz.
E-field probes work alongside radiation or RF survey meters
, devices which measure electromagnetic field strength and diagnose RF signal integrity. And while some of the equipment can be used as field strength monitors
, they are two different types of applications.