Functional description
The R&S®ENY81-CA6 terminates the EUT interface with 150 Ω (asymmetrical or common-mode impedance) and couples the EUT's asymmetrical voltage to the test receiver with a voltage division factor of typ. 9.5 dB. The wanted symmetrical (differential-mode) signal passes through the coupling network almost without attenuation up to a bandwidth of 250 MHz (valid for a symmetrical
impedance of 100 Ω). At the same time, the coupling network decouples the test circuit from disturbance effects (disturbance voltage, impedance) at the AE port. The R&S®ENY81-CA6 coupling network features bare threaded sockets for connecting it to a reference ground plane that is arranged either horizontally or vertically.