The D4ATT2 delivers two-channel programmable attenuators designed for abroad range of 75Ω signal level control applications, including DOCSIS cable network multi-port and multi-device testing. The system has two independently controlled attenuator channels, providing attenuation ranges of either 0 to 62 dB with 0.5dB step. Control is facilitated via USB interfaces, supported by comprehensive software that includes an intuitive Windows GUI application and a full API with programming documentation.