The Agilent HP 85650A Quasi-Peak Adapter is used with the HP 8568B and 8566B spectrum Analysers to provide manual and automatic quasi-peak detection capability with the resolution bandwidth recommended by CISPR-16 and FCC Rules and Regulations Volume II Part 15J. In addition, the HP 85650A features a loudspeaker for audio signal characterization, and an Adapter “bypass” mode.     

• Keysight (Agilent) 85650A - Datasheet (240 kB)