Powered and controlled by connection to PC or self-powered USB hub, LDA-203 has 1–20 GHz operating frequency, 0–63 dB attenuation range, and 0.5 dB step size resolution. Unit is also programmable for fixed attenuation or swept attenuation ramps directly from included graphical user interface (GUI) software. While programmable for ATE applications, attenuator can also be used in WiMAX, 3G, 4G, LTE, DVB Fading Simulators, as well as engineering and production test labs.