The PXIe-5665 from National Instruments Corporation is a RF Spectrum Analyzer with Frequency 20 Hz to 14 GHz, Resolution Bandwidth 25 to 50 MHz, DANL -158 dBm/Hz, Dynamic Range 80 dB, Phase Noise -105 dBc / Hz. Tags: PXI. More details for PXIe-5665 can be seen below.