Weinschel, an API Technologies company announces a series of programmable attenuator units that offer a streamlined approach in programmable attenuation for bench test and subsystem applications. Models 8320 and 8321 house and control various Weinschel programmable attenuator models (3200-XE, 3400, 150T, and 4200 Series) via front panel controls, Ethernet, USB 2.0 and Serial communications interfaces.