The HP 83572A/B RF Plug-in extends the frequency coverage from 26.5 GHz to 40.0 GHz with 100 MHz frequency accuracy. The plug-ins offer minimum unleveled output power of 7 dBm (HP 83572B), and 3 dBm (HP 83572A). Option 001 provides 6 dBm (HP 83572B), and 2 dBm (HP 83572A) calibrated externally leveled output power for regulated power control during swept and CW operations.