The SSG5040X from SIGLENT is a Signal Generator with Frequency 9 KHz to 4 GHz(CW), Resolution 0.001 Hz, Output Power 26 dBm, Phase Noise -120 dBc/Hz @1 GHz, offset 20 kHz (typ.), SSB Phase Noise -122 to -105 dBc/Hz. Tags: Analog Signal Generator. More details for SSG5040X can be seen below.