The R&S®ZNH4 from Rohde & Schwarz is a Vector Network Analyzer with Frequency 30 KHz to 4 GHz, Measurement Speed 761 µs, Dynamic Range 73 to 87 dB, Output Power -10dBm, Directivity 48 dB. Tags: VNA with Screen. More details for R&S®ZNH4 can be seen below.