HP-Agilent/Keysight 8561A

RF Spectrum Analyzer – Residual FM <10 Hz p-p in 20ms - Frequency range 50 Hz 6.5 GHz - Amplitude accuracy is ± 1.0 dB(dc coupled) - Amplitude range is +30 dBm to displayed average noise level - Input Impedance 50 ohms - Counter resolution is 10Hz to 1MHz selectable - Dynamic range is 125 dB o Spectral purity is <(-100 + 20 Log n) dB c/h at 30kHz offset - Resolution Bandwidth 10 Hz - 1 MHz - Video Bandwidth 1 Hz - 3 MHz