HP / Keysight / Agilent 8556A Overview
The Agilent HP 8556A RF Section offers a frequency range of 20Hz to 300kHz
The input may be either balanced or unbalanced and measurement units may be dBv, dBm or Volts.
The 8556A is compatible with impedances normally encountered at audio frequencies
The HP 8556A a plug-in for the 141T Spectrum Analyzer and is generally used with the Agilent HP 8552B IF Section.