The R&S®ZNA50 from Rohde & Schwarz is a Vector Network Analyzer with Frequency 10 MHz to 50 GHz, Dynamic Range 86 to 139 dB, Power Sweep Range 100 dB, Directivity 40 to 49 dB. Tags: VNA with Screen, USB / Computer Controlled. More details for R&S®ZNA50 can be seen below.