Profile: ETS-Lindgren specializes in providing engineered products. Our products include absorbers, antennas, chambers, filters, positioners, probes & monitors, RF test sets, TEM devices and test systems. Model 2090 multi-device positioning controller is designed for use with our positioning devices such as antenna towers, turntables, reverberation paddles, multi-axis positioners to accomplish a variety of tests from EMC compliance and antenna pattern measurements. Our 5503 electric field generator features a frequency range of 10 kHz to 30 MHz and generates a large area uniform vertical electrical field. The model 5503 top plate consists of four separate tube conductors that are connected in parallel at the feed and load ends. This four-wire transmission line acts as a plate conductor at frequencies up to 30 MHz. A vertical, quasi-static TEM mode electric field is produced between the four-wire system and the ground plane of a semi-anechoic chamber. The width-to-height ratio of the four-wire plate is designed for an impedance match to a 50 ohm system without an input transformer. An external forced-air-cooled load is used to terminate the Model 5503. The cooling system maintains proper operating temperature and is monitored by a temperature sensor. The load housing is connected to a plate in the chamber floor. A pulley systems allows users to manually adjust the height to accommodate various equipment under test (EUT) sizes. The E-field generator is easy to assemble & disassemble, and can be removed from the chamber when needed.