The AP5001A from Keysight Technologies is a Signal Generator with Frequency 9 kHz to 2 / 4 / 6.1 GHz, Resolution 0.001 Hz, Output Power -30 to 17 dBm, SSB Phase Noise -128 to -130 dBc/Hz, Setting time 20 to 200 us. Tags: Analog Signal Generator. More details for AP5001A can be seen below.