With the programmable 84904L step attenuator, a signal attenuation of 0 to 11 dB can be programmed in 1 dB steps at a bandwidth of 0 Hz to 40 GHz. Within the frequency range up to 40 GHz, it offers very good stability and repeatability of the attenuation. This is achieved through gold-plated spring contacts, which also guarantee a long service life - over 2 million switching cycles - with a repeat accuracy of typically <0.03 dB. The UK6 option offers higher accuracy and traceability to the NIST standard (SWR (standing wave ratio) and Weakening).