The Keysight 8498A Option 030 is designed to meet the needs of high power attenuation applications in the RF and microwave frequency range. It is a 25 watt average, 30 dB fixed attenuator with a frequency range of dc to 18 GHz. The attenuator offers peak power of 500 W up to 5.8 GHz and a low SWR of 1.15 up to 8 GHz. Accuracy is plus or minus 1 dB over the entire range. The unit features "human engineered" cooling fins that prevent operator burns even under continuous maximum input power conditions.