R&SZVR|羅德與施瓦茨ZVR|Rohde&SchwarzZVR|網(wǎng)絡(luò)分析儀 Rohde&Schwarz ZVR 4G網(wǎng)絡(luò)分析儀|羅德與施瓦茨 10Hz至4GHz 品牌：羅德與施瓦茨 Rohde&Schwarz The family comprises the five Vector Network Analyzers ZVRL, ZVRE and ZVR as well as ZVCE and ZVC which extend the frequency range to 8 GHz. All models are compact instruments with integrated generator, test set and receiver, each tailored to a different field of application. All analyzers can be subsequently upgraded to the higher-class models. ZVRE and ZVCE : the economy models The test set of these models comprises two SWR bridges (ZVRE) or directional couplers (ZVCE), an RF switch, two measurement channels and one reference channel. They measure the magnitude and phase of all four S-parameters of a DUT, allow a full two-port calibration (TOSM) and have an exceptionally high accuracy and wide dynamic range. ZVRE, ZVCE (bidirectional, 3 channels) ZVR and ZVC : the universal models ZVR and ZVC comprise a test set with two SWR bridges (ZVR) or directional couplers (ZVC), an RF switch, two measurement channels and - unlike ZVRE and ZVCE - two reference channels. With this configuration a variety of novel calibration procedures, eg TNA, can be performed, which considerably improve the accuracy particularly in non-coaxial applications. ZVR and ZVC are the allrounders of the family and suitable for applications in R&D and production no matter how sophisticated.