MIcable has developed a programmable attenuator MDA004080-50E covering 0.4~8GHz. The user can control the attenuator via USB/Ethernet with 1dB step or down to 0.1dB option, 0.2dB accuracy, 50dB attenuation dynamic range over whole band. The user also can control this unit through the GUI user-friendly software or by programming through the DLL dynamic link library file. Custom designs are available with frequency range from 0.5~40GHz.