The R&S®ZNH18 from Rohde & Schwarz is a Vector Network Analyzer with Frequency 30 KHz to 18 GHz, Measurement Speed 761 µs, Dynamic Range 80 to 88 dB, Output Power 0 dBm, Directivity 41 to 48 dB. Tags: VNA with Screen. More details for R&S®ZNH18 can be seen below.